aboutsummaryrefslogtreecommitdiff
path: root/target-m68k
diff options
context:
space:
mode:
authorThomas Huth <thuth@redhat.com>2016-10-11 08:56:52 +0200
committerThomas Huth <thuth@redhat.com>2016-12-20 21:52:12 +0100
commitfcf5ef2ab52c621a4617ebbef36bf43b4003f4c0 (patch)
tree2b450d96b01455df8ed908bf8f26ddc388a03380 /target-m68k
parent82ecffa8c050bf5bbc13329e9b65eac1caa5b55c (diff)
Move target-* CPU file into a target/ folder
We've currently got 18 architectures in QEMU, and thus 18 target-xxx folders in the root folder of the QEMU source tree. More architectures (e.g. RISC-V, AVR) are likely to be included soon, too, so the main folder of the QEMU sources slowly gets quite overcrowded with the target-xxx folders. To disburden the main folder a little bit, let's move the target-xxx folders into a dedicated target/ folder, so that target-xxx/ simply becomes target/xxx/ instead. Acked-by: Laurent Vivier <laurent@vivier.eu> [m68k part] Acked-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> [tricore part] Acked-by: Michael Walle <michael@walle.cc> [lm32 part] Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> [s390x part] Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> [s390x part] Acked-by: Eduardo Habkost <ehabkost@redhat.com> [i386 part] Acked-by: Artyom Tarasenko <atar4qemu@gmail.com> [sparc part] Acked-by: Richard Henderson <rth@twiddle.net> [alpha part] Acked-by: Max Filippov <jcmvbkbc@gmail.com> [xtensa part] Reviewed-by: David Gibson <david@gibson.dropbear.id.au> [ppc part] Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> [cris&microblaze part] Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn> [unicore32 part] Signed-off-by: Thomas Huth <thuth@redhat.com>
Diffstat (limited to 'target-m68k')
-rw-r--r--target-m68k/Makefile.objs3
-rw-r--r--target-m68k/cpu-qom.h52
-rw-r--r--target-m68k/cpu.c324
-rw-r--r--target-m68k/cpu.h308
-rw-r--r--target-m68k/gdbstub.c76
-rw-r--r--target-m68k/helper.c810
-rw-r--r--target-m68k/helper.h49
-rw-r--r--target-m68k/m68k-semi.c462
-rw-r--r--target-m68k/op_helper.c229
-rw-r--r--target-m68k/qregs.def13
-rw-r--r--target-m68k/translate.c3595
11 files changed, 0 insertions, 5921 deletions
diff --git a/target-m68k/Makefile.objs b/target-m68k/Makefile.objs
deleted file mode 100644
index 02cf616a78..0000000000
--- a/target-m68k/Makefile.objs
+++ /dev/null
@@ -1,3 +0,0 @@
-obj-y += m68k-semi.o
-obj-y += translate.o op_helper.o helper.o cpu.o
-obj-y += gdbstub.o
diff --git a/target-m68k/cpu-qom.h b/target-m68k/cpu-qom.h
deleted file mode 100644
index 9885bba317..0000000000
--- a/target-m68k/cpu-qom.h
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * QEMU Motorola 68k CPU
- *
- * Copyright (c) 2012 SUSE LINUX Products GmbH
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, see
- * <http://www.gnu.org/licenses/lgpl-2.1.html>
- */
-#ifndef QEMU_M68K_CPU_QOM_H
-#define QEMU_M68K_CPU_QOM_H
-
-#include "qom/cpu.h"
-
-#define TYPE_M68K_CPU "m68k-cpu"
-
-#define M68K_CPU_CLASS(klass) \
- OBJECT_CLASS_CHECK(M68kCPUClass, (klass), TYPE_M68K_CPU)
-#define M68K_CPU(obj) \
- OBJECT_CHECK(M68kCPU, (obj), TYPE_M68K_CPU)
-#define M68K_CPU_GET_CLASS(obj) \
- OBJECT_GET_CLASS(M68kCPUClass, (obj), TYPE_M68K_CPU)
-
-/**
- * M68kCPUClass:
- * @parent_realize: The parent class' realize handler.
- * @parent_reset: The parent class' reset handler.
- *
- * A Motorola 68k CPU model.
- */
-typedef struct M68kCPUClass {
- /*< private >*/
- CPUClass parent_class;
- /*< public >*/
-
- DeviceRealize parent_realize;
- void (*parent_reset)(CPUState *cpu);
-} M68kCPUClass;
-
-typedef struct M68kCPU M68kCPU;
-
-#endif
diff --git a/target-m68k/cpu.c b/target-m68k/cpu.c
deleted file mode 100644
index ba17480098..0000000000
--- a/target-m68k/cpu.c
+++ /dev/null
@@ -1,324 +0,0 @@
-/*
- * QEMU Motorola 68k CPU
- *
- * Copyright (c) 2012 SUSE LINUX Products GmbH
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, see
- * <http://www.gnu.org/licenses/lgpl-2.1.html>
- */
-
-#include "qemu/osdep.h"
-#include "qapi/error.h"
-#include "cpu.h"
-#include "qemu-common.h"
-#include "migration/vmstate.h"
-#include "exec/exec-all.h"
-
-
-static void m68k_cpu_set_pc(CPUState *cs, vaddr value)
-{
- M68kCPU *cpu = M68K_CPU(cs);
-
- cpu->env.pc = value;
-}
-
-static bool m68k_cpu_has_work(CPUState *cs)
-{
- return cs->interrupt_request & CPU_INTERRUPT_HARD;
-}
-
-static void m68k_set_feature(CPUM68KState *env, int feature)
-{
- env->features |= (1u << feature);
-}
-
-/* CPUClass::reset() */
-static void m68k_cpu_reset(CPUState *s)
-{
- M68kCPU *cpu = M68K_CPU(s);
- M68kCPUClass *mcc = M68K_CPU_GET_CLASS(cpu);
- CPUM68KState *env = &cpu->env;
-
- mcc->parent_reset(s);
-
- memset(env, 0, offsetof(CPUM68KState, features));
-#if !defined(CONFIG_USER_ONLY)
- env->sr = 0x2700;
-#endif
- m68k_switch_sp(env);
- /* ??? FP regs should be initialized to NaN. */
- cpu_m68k_set_ccr(env, 0);
- /* TODO: We should set PC from the interrupt vector. */
- env->pc = 0;
- tlb_flush(s, 1);
-}
-
-static void m68k_cpu_disas_set_info(CPUState *s, disassemble_info *info)
-{
- M68kCPU *cpu = M68K_CPU(s);
- CPUM68KState *env = &cpu->env;
- info->print_insn = print_insn_m68k;
- if (m68k_feature(env, M68K_FEATURE_M68000)) {
- info->mach = bfd_mach_m68040;
- }
-}
-
-/* CPU models */
-
-static ObjectClass *m68k_cpu_class_by_name(const char *cpu_model)
-{
- ObjectClass *oc;
- char *typename;
-
- if (cpu_model == NULL) {
- return NULL;
- }
-
- typename = g_strdup_printf("%s-" TYPE_M68K_CPU, cpu_model);
- oc = object_class_by_name(typename);
- g_free(typename);
- if (oc != NULL && (object_class_dynamic_cast(oc, TYPE_M68K_CPU) == NULL ||
- object_class_is_abstract(oc))) {
- return NULL;
- }
- return oc;
-}
-
-static void m5206_cpu_initfn(Object *obj)
-{
- M68kCPU *cpu = M68K_CPU(obj);
- CPUM68KState *env = &cpu->env;
-
- m68k_set_feature(env, M68K_FEATURE_CF_ISA_A);
-}
-
-static void m68000_cpu_initfn(Object *obj)
-{
- M68kCPU *cpu = M68K_CPU(obj);
- CPUM68KState *env = &cpu->env;
-
- m68k_set_feature(env, M68K_FEATURE_M68000);
- m68k_set_feature(env, M68K_FEATURE_USP);
- m68k_set_feature(env, M68K_FEATURE_WORD_INDEX);
-}
-
-static void m68020_cpu_initfn(Object *obj)
-{
- M68kCPU *cpu = M68K_CPU(obj);
- CPUM68KState *env = &cpu->env;
-
- m68k_set_feature(env, M68K_FEATURE_M68000);
- m68k_set_feature(env, M68K_FEATURE_USP);
- m68k_set_feature(env, M68K_FEATURE_WORD_INDEX);
- m68k_set_feature(env, M68K_FEATURE_QUAD_MULDIV);
- m68k_set_feature(env, M68K_FEATURE_BRAL);
- m68k_set_feature(env, M68K_FEATURE_BCCL);
- m68k_set_feature(env, M68K_FEATURE_BITFIELD);
- m68k_set_feature(env, M68K_FEATURE_EXT_FULL);
- m68k_set_feature(env, M68K_FEATURE_SCALED_INDEX);
- m68k_set_feature(env, M68K_FEATURE_LONG_MULDIV);
- m68k_set_feature(env, M68K_FEATURE_FPU);
- m68k_set_feature(env, M68K_FEATURE_CAS);
- m68k_set_feature(env, M68K_FEATURE_BKPT);
-}
-#define m68030_cpu_initfn m68020_cpu_initfn
-#define m68040_cpu_initfn m68020_cpu_initfn
-
-static void m68060_cpu_initfn(Object *obj)
-{
- M68kCPU *cpu = M68K_CPU(obj);
- CPUM68KState *env = &cpu->env;
-
- m68k_set_feature(env, M68K_FEATURE_M68000);
- m68k_set_feature(env, M68K_FEATURE_USP);
- m68k_set_feature(env, M68K_FEATURE_WORD_INDEX);
- m68k_set_feature(env, M68K_FEATURE_BRAL);
- m68k_set_feature(env, M68K_FEATURE_BCCL);
- m68k_set_feature(env, M68K_FEATURE_BITFIELD);
- m68k_set_feature(env, M68K_FEATURE_EXT_FULL);
- m68k_set_feature(env, M68K_FEATURE_SCALED_INDEX);
- m68k_set_feature(env, M68K_FEATURE_LONG_MULDIV);
- m68k_set_feature(env, M68K_FEATURE_FPU);
- m68k_set_feature(env, M68K_FEATURE_CAS);
- m68k_set_feature(env, M68K_FEATURE_BKPT);
-}
-
-static void m5208_cpu_initfn(Object *obj)
-{
- M68kCPU *cpu = M68K_CPU(obj);
- CPUM68KState *env = &cpu->env;
-
- m68k_set_feature(env, M68K_FEATURE_CF_ISA_A);
- m68k_set_feature(env, M68K_FEATURE_CF_ISA_APLUSC);
- m68k_set_feature(env, M68K_FEATURE_BRAL);
- m68k_set_feature(env, M68K_FEATURE_CF_EMAC);
- m68k_set_feature(env, M68K_FEATURE_USP);
-}
-
-static void cfv4e_cpu_initfn(Object *obj)
-{
- M68kCPU *cpu = M68K_CPU(obj);
- CPUM68KState *env = &cpu->env;
-
- m68k_set_feature(env, M68K_FEATURE_CF_ISA_A);
- m68k_set_feature(env, M68K_FEATURE_CF_ISA_B);
- m68k_set_feature(env, M68K_FEATURE_BRAL);
- m68k_set_feature(env, M68K_FEATURE_CF_FPU);
- m68k_set_feature(env, M68K_FEATURE_CF_EMAC);
- m68k_set_feature(env, M68K_FEATURE_USP);
-}
-
-static void any_cpu_initfn(Object *obj)
-{
- M68kCPU *cpu = M68K_CPU(obj);
- CPUM68KState *env = &cpu->env;
-
- m68k_set_feature(env, M68K_FEATURE_CF_ISA_A);
- m68k_set_feature(env, M68K_FEATURE_CF_ISA_B);
- m68k_set_feature(env, M68K_FEATURE_CF_ISA_APLUSC);
- m68k_set_feature(env, M68K_FEATURE_BRAL);
- m68k_set_feature(env, M68K_FEATURE_CF_FPU);
- /* MAC and EMAC are mututally exclusive, so pick EMAC.
- It's mostly backwards compatible. */
- m68k_set_feature(env, M68K_FEATURE_CF_EMAC);
- m68k_set_feature(env, M68K_FEATURE_CF_EMAC_B);
- m68k_set_feature(env, M68K_FEATURE_USP);
- m68k_set_feature(env, M68K_FEATURE_EXT_FULL);
- m68k_set_feature(env, M68K_FEATURE_WORD_INDEX);
-}
-
-typedef struct M68kCPUInfo {
- const char *name;
- void (*instance_init)(Object *obj);
-} M68kCPUInfo;
-
-static const M68kCPUInfo m68k_cpus[] = {
- { .name = "m68000", .instance_init = m68000_cpu_initfn },
- { .name = "m68020", .instance_init = m68020_cpu_initfn },
- { .name = "m68030", .instance_init = m68030_cpu_initfn },
- { .name = "m68040", .instance_init = m68040_cpu_initfn },
- { .name = "m68060", .instance_init = m68060_cpu_initfn },
- { .name = "m5206", .instance_init = m5206_cpu_initfn },
- { .name = "m5208", .instance_init = m5208_cpu_initfn },
- { .name = "cfv4e", .instance_init = cfv4e_cpu_initfn },
- { .name = "any", .instance_init = any_cpu_initfn },
-};
-
-static void m68k_cpu_realizefn(DeviceState *dev, Error **errp)
-{
- CPUState *cs = CPU(dev);
- M68kCPU *cpu = M68K_CPU(dev);
- M68kCPUClass *mcc = M68K_CPU_GET_CLASS(dev);
- Error *local_err = NULL;
-
- cpu_exec_realizefn(cs, &local_err);
- if (local_err != NULL) {
- error_propagate(errp, local_err);
- return;
- }
-
- m68k_cpu_init_gdb(cpu);
-
- cpu_reset(cs);
- qemu_init_vcpu(cs);
-
- mcc->parent_realize(dev, errp);
-}
-
-static void m68k_cpu_initfn(Object *obj)
-{
- CPUState *cs = CPU(obj);
- M68kCPU *cpu = M68K_CPU(obj);
- CPUM68KState *env = &cpu->env;
- static bool inited;
-
- cs->env_ptr = env;
-
- if (tcg_enabled() && !inited) {
- inited = true;
- m68k_tcg_init();
- }
-}
-
-static const VMStateDescription vmstate_m68k_cpu = {
- .name = "cpu",
- .unmigratable = 1,
-};
-
-static void m68k_cpu_class_init(ObjectClass *c, void *data)
-{
- M68kCPUClass *mcc = M68K_CPU_CLASS(c);
- CPUClass *cc = CPU_CLASS(c);
- DeviceClass *dc = DEVICE_CLASS(c);
-
- mcc->parent_realize = dc->realize;
- dc->realize = m68k_cpu_realizefn;
-
- mcc->parent_reset = cc->reset;
- cc->reset = m68k_cpu_reset;
-
- cc->class_by_name = m68k_cpu_class_by_name;
- cc->has_work = m68k_cpu_has_work;
- cc->do_interrupt = m68k_cpu_do_interrupt;
- cc->cpu_exec_interrupt = m68k_cpu_exec_interrupt;
- cc->dump_state = m68k_cpu_dump_state;
- cc->set_pc = m68k_cpu_set_pc;
- cc->gdb_read_register = m68k_cpu_gdb_read_register;
- cc->gdb_write_register = m68k_cpu_gdb_write_register;
-#ifdef CONFIG_USER_ONLY
- cc->handle_mmu_fault = m68k_cpu_handle_mmu_fault;
-#else
- cc->get_phys_page_debug = m68k_cpu_get_phys_page_debug;
-#endif
- cc->disas_set_info = m68k_cpu_disas_set_info;
-
- cc->gdb_num_core_regs = 18;
- cc->gdb_core_xml_file = "cf-core.xml";
-
- dc->vmsd = &vmstate_m68k_cpu;
-}
-
-static void register_cpu_type(const M68kCPUInfo *info)
-{
- TypeInfo type_info = {
- .parent = TYPE_M68K_CPU,
- .instance_init = info->instance_init,
- };
-
- type_info.name = g_strdup_printf("%s-" TYPE_M68K_CPU, info->name);
- type_register(&type_info);
- g_free((void *)type_info.name);
-}
-
-static const TypeInfo m68k_cpu_type_info = {
- .name = TYPE_M68K_CPU,
- .parent = TYPE_CPU,
- .instance_size = sizeof(M68kCPU),
- .instance_init = m68k_cpu_initfn,
- .abstract = true,
- .class_size = sizeof(M68kCPUClass),
- .class_init = m68k_cpu_class_init,
-};
-
-static void m68k_cpu_register_types(void)
-{
- int i;
-
- type_register_static(&m68k_cpu_type_info);
- for (i = 0; i < ARRAY_SIZE(m68k_cpus); i++) {
- register_cpu_type(&m68k_cpus[i]);
- }
-}
-
-type_init(m68k_cpu_register_types)
diff --git a/target-m68k/cpu.h b/target-m68k/cpu.h
deleted file mode 100644
index 6dfb54eb70..0000000000
--- a/target-m68k/cpu.h
+++ /dev/null
@@ -1,308 +0,0 @@
-/*
- * m68k virtual CPU header
- *
- * Copyright (c) 2005-2007 CodeSourcery
- * Written by Paul Brook
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef M68K_CPU_H
-#define M68K_CPU_H
-
-#define TARGET_LONG_BITS 32
-
-#define CPUArchState struct CPUM68KState
-
-#include "qemu-common.h"
-#include "exec/cpu-defs.h"
-#include "cpu-qom.h"
-#include "fpu/softfloat.h"
-
-#define OS_BYTE 0
-#define OS_WORD 1
-#define OS_LONG 2
-#define OS_SINGLE 3
-#define OS_DOUBLE 4
-#define OS_EXTENDED 5
-#define OS_PACKED 6
-
-#define MAX_QREGS 32
-
-#define EXCP_ACCESS 2 /* Access (MMU) error. */
-#define EXCP_ADDRESS 3 /* Address error. */
-#define EXCP_ILLEGAL 4 /* Illegal instruction. */
-#define EXCP_DIV0 5 /* Divide by zero */
-#define EXCP_PRIVILEGE 8 /* Privilege violation. */
-#define EXCP_TRACE 9
-#define EXCP_LINEA 10 /* Unimplemented line-A (MAC) opcode. */
-#define EXCP_LINEF 11 /* Unimplemented line-F (FPU) opcode. */
-#define EXCP_DEBUGNBP 12 /* Non-breakpoint debug interrupt. */
-#define EXCP_DEBEGBP 13 /* Breakpoint debug interrupt. */
-#define EXCP_FORMAT 14 /* RTE format error. */
-#define EXCP_UNINITIALIZED 15
-#define EXCP_TRAP0 32 /* User trap #0. */
-#define EXCP_TRAP15 47 /* User trap #15. */
-#define EXCP_UNSUPPORTED 61
-#define EXCP_ICE 13
-
-#define EXCP_RTE 0x100
-#define EXCP_HALT_INSN 0x101
-
-#define NB_MMU_MODES 2
-#define TARGET_INSN_START_EXTRA_WORDS 1
-
-typedef struct CPUM68KState {
- uint32_t dregs[8];
- uint32_t aregs[8];
- uint32_t pc;
- uint32_t sr;
-
- /* SSP and USP. The current_sp is stored in aregs[7], the other here. */
- int current_sp;
- uint32_t sp[2];
-
- /* Condition flags. */
- uint32_t cc_op;
- uint32_t cc_x; /* always 0/1 */
- uint32_t cc_n; /* in bit 31 (i.e. negative) */
- uint32_t cc_v; /* in bit 31, unused, or computed from cc_n and cc_v */
- uint32_t cc_c; /* either 0/1, unused, or computed from cc_n and cc_v */
- uint32_t cc_z; /* == 0 or unused */
-
- float64 fregs[8];
- float64 fp_result;
- uint32_t fpcr;
- uint32_t fpsr;
- float_status fp_status;
-
- uint64_t mactmp;
- /* EMAC Hardware deals with 48-bit values composed of one 32-bit and
- two 8-bit parts. We store a single 64-bit value and
- rearrange/extend this when changing modes. */
- uint64_t macc[4];
- uint32_t macsr;
- uint32_t mac_mask;
-
- /* Temporary storage for DIV helpers. */
- uint32_t div1;
- uint32_t div2;
-
- /* MMU status. */
- struct {
- uint32_t ar;
- } mmu;
-
- /* Control registers. */
- uint32_t vbr;
- uint32_t mbar;
- uint32_t rambar0;
- uint32_t cacr;
-
- int pending_vector;
- int pending_level;
-
- uint32_t qregs[MAX_QREGS];
-
- CPU_COMMON
-
- /* Fields from here on are preserved across CPU reset. */
- uint32_t features;
-} CPUM68KState;
-
-/**
- * M68kCPU:
- * @env: #CPUM68KState
- *
- * A Motorola 68k CPU.
- */
-struct M68kCPU {
- /*< private >*/
- CPUState parent_obj;
- /*< public >*/
-
- CPUM68KState env;
-};
-
-static inline M68kCPU *m68k_env_get_cpu(CPUM68KState *env)
-{
- return container_of(env, M68kCPU, env);
-}
-
-#define ENV_GET_CPU(e) CPU(m68k_env_get_cpu(e))
-
-#define ENV_OFFSET offsetof(M68kCPU, env)
-
-void m68k_cpu_do_interrupt(CPUState *cpu);
-bool m68k_cpu_exec_interrupt(CPUState *cpu, int int_req);
-void m68k_cpu_dump_state(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,
- int flags);
-hwaddr m68k_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
-int m68k_cpu_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg);
-int m68k_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
-
-void m68k_tcg_init(void);
-void m68k_cpu_init_gdb(M68kCPU *cpu);
-M68kCPU *cpu_m68k_init(const char *cpu_model);
-/* you can call this signal handler from your SIGBUS and SIGSEGV
- signal handlers to inform the virtual CPU of exceptions. non zero
- is returned if the signal was handled by the virtual CPU. */
-int cpu_m68k_signal_handler(int host_signum, void *pinfo,
- void *puc);
-uint32_t cpu_m68k_get_ccr(CPUM68KState *env);
-void cpu_m68k_set_ccr(CPUM68KState *env, uint32_t);
-
-
-/* Instead of computing the condition codes after each m68k instruction,
- * QEMU just stores one operand (called CC_SRC), the result
- * (called CC_DEST) and the type of operation (called CC_OP). When the
- * condition codes are needed, the condition codes can be calculated
- * using this information. Condition codes are not generated if they
- * are only needed for conditional branches.
- */
-typedef enum {
- /* Translator only -- use env->cc_op. */
- CC_OP_DYNAMIC = -1,
-
- /* Each flag bit computed into cc_[xcnvz]. */
- CC_OP_FLAGS,
-
- /* X in cc_x, C = X, N in cc_n, Z in cc_n, V via cc_n/cc_v. */
- CC_OP_ADDB, CC_OP_ADDW, CC_OP_ADDL,
- CC_OP_SUBB, CC_OP_SUBW, CC_OP_SUBL,
-
- /* X in cc_x, {N,Z,C,V} via cc_n/cc_v. */
- CC_OP_CMPB, CC_OP_CMPW, CC_OP_CMPL,
-
- /* X in cc_x, C = 0, V = 0, N in cc_n, Z in cc_n. */
- CC_OP_LOGIC,
-
- CC_OP_NB
-} CCOp;
-
-#define CCF_C 0x01
-#define CCF_V 0x02
-#define CCF_Z 0x04
-#define CCF_N 0x08
-#define CCF_X 0x10
-
-#define SR_I_SHIFT 8
-#define SR_I 0x0700
-#define SR_M 0x1000
-#define SR_S 0x2000
-#define SR_T 0x8000
-
-#define M68K_SSP 0
-#define M68K_USP 1
-
-/* CACR fields are implementation defined, but some bits are common. */
-#define M68K_CACR_EUSP 0x10
-
-#define MACSR_PAV0 0x100
-#define MACSR_OMC 0x080
-#define MACSR_SU 0x040
-#define MACSR_FI 0x020
-#define MACSR_RT 0x010
-#define MACSR_N 0x008
-#define MACSR_Z 0x004
-#define MACSR_V 0x002
-#define MACSR_EV 0x001
-
-void m68k_set_irq_level(M68kCPU *cpu, int level, uint8_t vector);
-void m68k_switch_sp(CPUM68KState *env);
-
-#define M68K_FPCR_PREC (1 << 6)
-
-void do_m68k_semihosting(CPUM68KState *env, int nr);
-
-/* There are 4 ColdFire core ISA revisions: A, A+, B and C.
- Each feature covers the subset of instructions common to the
- ISA revisions mentioned. */
-
-enum m68k_features {
- M68K_FEATURE_M68000,
- M68K_FEATURE_CF_ISA_A,
- M68K_FEATURE_CF_ISA_B, /* (ISA B or C). */
- M68K_FEATURE_CF_ISA_APLUSC, /* BIT/BITREV, FF1, STRLDSR (ISA A+ or C). */
- M68K_FEATURE_BRAL, /* Long unconditional branch. (ISA A+ or B). */
- M68K_FEATURE_CF_FPU,
- M68K_FEATURE_CF_MAC,
- M68K_FEATURE_CF_EMAC,
- M68K_FEATURE_CF_EMAC_B, /* Revision B EMAC (dual accumulate). */
- M68K_FEATURE_USP, /* User Stack Pointer. (ISA A+, B or C). */
- M68K_FEATURE_EXT_FULL, /* 68020+ full extension word. */
- M68K_FEATURE_WORD_INDEX, /* word sized address index registers. */
- M68K_FEATURE_SCALED_INDEX, /* scaled address index registers. */
- M68K_FEATURE_LONG_MULDIV, /* 32 bit multiply/divide. */
- M68K_FEATURE_QUAD_MULDIV, /* 64 bit multiply/divide. */
- M68K_FEATURE_BCCL, /* Long conditional branches. */
- M68K_FEATURE_BITFIELD, /* Bit field insns. */
- M68K_FEATURE_FPU,
- M68K_FEATURE_CAS,
- M68K_FEATURE_BKPT,
-};
-
-static inline int m68k_feature(CPUM68KState *env, int feature)
-{
- return (env->features & (1u << feature)) != 0;
-}
-
-void m68k_cpu_list(FILE *f, fprintf_function cpu_fprintf);
-
-void register_m68k_insns (CPUM68KState *env);
-
-#ifdef CONFIG_USER_ONLY
-/* Coldfire Linux uses 8k pages
- * and m68k linux uses 4k pages
- * use the smaller one
- */
-#define TARGET_PAGE_BITS 12
-#else
-/* Smallest TLB entry size is 1k. */
-#define TARGET_PAGE_BITS 10
-#endif
-
-#define TARGET_PHYS_ADDR_SPACE_BITS 32
-#define TARGET_VIRT_ADDR_SPACE_BITS 32
-
-#define cpu_init(cpu_model) CPU(cpu_m68k_init(cpu_model))
-
-#define cpu_signal_handler cpu_m68k_signal_handler
-#define cpu_list m68k_cpu_list
-
-/* MMU modes definitions */
-#define MMU_MODE0_SUFFIX _kernel
-#define MMU_MODE1_SUFFIX _user
-#define MMU_USER_IDX 1
-static inline int cpu_mmu_index (CPUM68KState *env, bool ifetch)
-{
- return (env->sr & SR_S) == 0 ? 1 : 0;
-}
-
-int m68k_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw,
- int mmu_idx);
-
-#include "exec/cpu-all.h"
-
-static inline void cpu_get_tb_cpu_state(CPUM68KState *env, target_ulong *pc,
- target_ulong *cs_base, uint32_t *flags)
-{
- *pc = env->pc;
- *cs_base = 0;
- *flags = (env->fpcr & M68K_FPCR_PREC) /* Bit 6 */
- | (env->sr & SR_S) /* Bit 13 */
- | ((env->macsr >> 4) & 0xf); /* Bits 0-3 */
-}
-
-#endif
diff --git a/target-m68k/gdbstub.c b/target-m68k/gdbstub.c
deleted file mode 100644
index c7f44c9bb3..0000000000
--- a/target-m68k/gdbstub.c
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
- * m68k gdb server stub
- *
- * Copyright (c) 2003-2005 Fabrice Bellard
- * Copyright (c) 2013 SUSE LINUX Products GmbH
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, see <http://www.gnu.org/licenses/>.
- */
-#include "qemu/osdep.h"
-#include "qemu-common.h"
-#include "cpu.h"
-#include "exec/gdbstub.h"
-
-int m68k_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)
-{
- M68kCPU *cpu = M68K_CPU(cs);
- CPUM68KState *env = &cpu->env;
-
- if (n < 8) {
- /* D0-D7 */
- return gdb_get_reg32(mem_buf, env->dregs[n]);
- } else if (n < 16) {
- /* A0-A7 */
- return gdb_get_reg32(mem_buf, env->aregs[n - 8]);
- } else {
- switch (n) {
- case 16:
- return gdb_get_reg32(mem_buf, env->sr);
- case 17:
- return gdb_get_reg32(mem_buf, env->pc);
- }
- }
- /* FP registers not included here because they vary between
- ColdFire and m68k. Use XML bits for these. */
- return 0;
-}
-
-int m68k_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
-{
- M68kCPU *cpu = M68K_CPU(cs);
- CPUM68KState *env = &cpu->env;
- uint32_t tmp;
-
- tmp = ldl_p(mem_buf);
-
- if (n < 8) {
- /* D0-D7 */
- env->dregs[n] = tmp;
- } else if (n < 16) {
- /* A0-A7 */
- env->aregs[n - 8] = tmp;
- } else {
- switch (n) {
- case 16:
- env->sr = tmp;
- break;
- case 17:
- env->pc = tmp;
- break;
- default:
- return 0;
- }
- }
- return 4;
-}
diff --git a/target-m68k/helper.c b/target-m68k/helper.c
deleted file mode 100644
index 7aed9ffd2f..0000000000
--- a/target-m68k/helper.c
+++ /dev/null
@@ -1,810 +0,0 @@
-/*
- * m68k op helpers
- *
- * Copyright (c) 2006-2007 CodeSourcery
- * Written by Paul Brook
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "qemu/osdep.h"
-#include "cpu.h"
-#include "exec/exec-all.h"
-#include "exec/gdbstub.h"
-
-#include "exec/helper-proto.h"
-
-#define SIGNBIT (1u << 31)
-
-/* Sort alphabetically, except for "any". */
-static gint m68k_cpu_list_compare(gconstpointer a, gconstpointer b)
-{
- ObjectClass *class_a = (ObjectClass *)a;
- ObjectClass *class_b = (ObjectClass *)b;
- const char *name_a, *name_b;
-
- name_a = object_class_get_name(class_a);
- name_b = object_class_get_name(class_b);
- if (strcmp(name_a, "any-" TYPE_M68K_CPU) == 0) {
- return 1;
- } else if (strcmp(name_b, "any-" TYPE_M68K_CPU) == 0) {
- return -1;
- } else {
- return strcasecmp(name_a, name_b);
- }
-}
-
-static void m68k_cpu_list_entry(gpointer data, gpointer user_data)
-{
- ObjectClass *c = data;
- CPUListState *s = user_data;
- const char *typename;
- char *name;
-
- typename = object_class_get_name(c);
- name = g_strndup(typename, strlen(typename) - strlen("-" TYPE_M68K_CPU));
- (*s->cpu_fprintf)(s->file, "%s\n",
- name);
- g_free(name);
-}
-
-void m68k_cpu_list(FILE *f, fprintf_function cpu_fprintf)
-{
- CPUListState s = {
- .file = f,
- .cpu_fprintf = cpu_fprintf,
- };
- GSList *list;
-
- list = object_class_get_list(TYPE_M68K_CPU, false);
- list = g_slist_sort(list, m68k_cpu_list_compare);
- g_slist_foreach(list, m68k_cpu_list_entry, &s);
- g_slist_free(list);
-}
-
-static int fpu_gdb_get_reg(CPUM68KState *env, uint8_t *mem_buf, int n)
-{
- if (n < 8) {
- stfq_p(mem_buf, env->fregs[n]);
- return 8;
- }
- if (n < 11) {
- /* FP control registers (not implemented) */
- memset(mem_buf, 0, 4);
- return 4;
- }
- return 0;
-}
-
-static int fpu_gdb_set_reg(CPUM68KState *env, uint8_t *mem_buf, int n)
-{
- if (n < 8) {
- env->fregs[n] = ldfq_p(mem_buf);
- return 8;
- }
- if (n < 11) {
- /* FP control registers (not implemented) */
- return 4;
- }
- return 0;
-}
-
-M68kCPU *cpu_m68k_init(const char *cpu_model)
-{
- M68kCPU *cpu;
- CPUM68KState *env;
- ObjectClass *oc;
-
- oc = cpu_class_by_name(TYPE_M68K_CPU, cpu_model);
- if (oc == NULL) {
- return NULL;
- }
- cpu = M68K_CPU(object_new(object_class_get_name(oc)));
- env = &cpu->env;
-
- register_m68k_insns(env);
-
- object_property_set_bool(OBJECT(cpu), true, "realized", NULL);
-
- return cpu;
-}
-
-void m68k_cpu_init_gdb(M68kCPU *cpu)
-{
- CPUState *cs = CPU(cpu);
- CPUM68KState *env = &cpu->env;
-
- if (m68k_feature(env, M68K_FEATURE_CF_FPU)) {
- gdb_register_coprocessor(cs, fpu_gdb_get_reg, fpu_gdb_set_reg,
- 11, "cf-fp.xml", 18);
- }
- /* TODO: Add [E]MAC registers. */
-}
-
-void HELPER(movec)(CPUM68KState *env, uint32_t reg, uint32_t val)
-{
- M68kCPU *cpu = m68k_env_get_cpu(env);
-
- switch (reg) {
- case 0x02: /* CACR */
- env->cacr = val;
- m68k_switch_sp(env);
- break;
- case 0x04: case 0x05: case 0x06: case 0x07: /* ACR[0-3] */
- /* TODO: Implement Access Control Registers. */
- break;
- case 0x801: /* VBR */
- env->vbr = val;
- break;
- /* TODO: Implement control registers. */
- default:
- cpu_abort(CPU(cpu), "Unimplemented control register write 0x%x = 0x%x\n",
- reg, val);
- }
-}
-
-void HELPER(set_macsr)(CPUM68KState *env, uint32_t val)
-{
- uint32_t acc;
- int8_t exthigh;
- uint8_t extlow;
- uint64_t regval;
- int i;
- if ((env->macsr ^ val) & (MACSR_FI | MACSR_SU)) {
- for (i = 0; i < 4; i++) {
- regval = env->macc[i];
- exthigh = regval >> 40;
- if (env->macsr & MACSR_FI) {
- acc = regval >> 8;
- extlow = regval;
- } else {
- acc = regval;
- extlow = regval >> 32;
- }
- if (env->macsr & MACSR_FI) {
- regval = (((uint64_t)acc) << 8) | extlow;
- regval |= ((int64_t)exthigh) << 40;
- } else if (env->macsr & MACSR_SU) {
- regval = acc | (((int64_t)extlow) << 32);
- regval |= ((int64_t)exthigh) << 40;
- } else {
- regval = acc | (((uint64_t)extlow) << 32);
- regval |= ((uint64_t)(uint8_t)exthigh) << 40;
- }
- env->macc[i] = regval;
- }
- }
- env->macsr = val;
-}
-
-void m68k_switch_sp(CPUM68KState *env)
-{
- int new_sp;
-
- env->sp[env->current_sp] = env->aregs[7];
- new_sp = (env->sr & SR_S && env->cacr & M68K_CACR_EUSP)
- ? M68K_SSP : M68K_USP;
- env->aregs[7] = env->sp[new_sp];
- env->current_sp = new_sp;
-}
-
-#if defined(CONFIG_USER_ONLY)
-
-int m68k_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw,
- int mmu_idx)
-{
- M68kCPU *cpu = M68K_CPU(cs);
-
- cs->exception_index = EXCP_ACCESS;
- cpu->env.mmu.ar = address;
- return 1;
-}
-
-#else
-
-/* MMU */
-
-/* TODO: This will need fixing once the MMU is implemented. */
-hwaddr m68k_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
-{
- return addr;
-}
-
-int m68k_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw,
- int mmu_idx)
-{
- int prot;
-
- address &= TARGET_PAGE_MASK;
- prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
- tlb_set_page(cs, address, address, prot, mmu_idx, TARGET_PAGE_SIZE);
- return 0;
-}
-
-/* Notify CPU of a pending interrupt. Prioritization and vectoring should
- be handled by the interrupt controller. Real hardware only requests
- the vector when the interrupt is acknowledged by the CPU. For
- simplicitly we calculate it when the interrupt is signalled. */
-void m68k_set_irq_level(M68kCPU *cpu, int level, uint8_t vector)
-{
- CPUState *cs = CPU(cpu);
- CPUM68KState *env = &cpu->env;
-
- env->pending_level = level;
- env->pending_vector = vector;
- if (level) {
- cpu_interrupt(cs, CPU_INTERRUPT_HARD);
- } else {
- cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
- }
-}
-
-#endif
-
-uint32_t HELPER(bitrev)(uint32_t x)
-{
- x = ((x >> 1) & 0x55555555u) | ((x << 1) & 0xaaaaaaaau);
- x = ((x >> 2) & 0x33333333u) | ((x << 2) & 0xccccccccu);
- x = ((x >> 4) & 0x0f0f0f0fu) | ((x << 4) & 0xf0f0f0f0u);
- return bswap32(x);
-}
-
-uint32_t HELPER(ff1)(uint32_t x)
-{
- int n;
- for (n = 32; x; n--)
- x >>= 1;
- return n;
-}
-
-uint32_t HELPER(sats)(uint32_t val, uint32_t v)
-{
- /* The result has the opposite sign to the original value. */
- if ((int32_t)v < 0) {
- val = (((int32_t)val) >> 31) ^ SIGNBIT;
- }
- return val;
-}
-
-void HELPER(set_sr)(CPUM68KState *env, uint32_t val)
-{
- env->sr = val & 0xffe0;
- cpu_m68k_set_ccr(env, val);
- m68k_switch_sp(env);
-}
-
-uint32_t HELPER(shl_cc)(CPUM68KState *env, uint32_t val, uint32_t shift)
-{
- uint64_t result;
-
- shift &= 63;
- result = (uint64_t)val << shift;
-
- env->cc_c = (result >> 32) & 1;
- env->cc_n = result;
- env->cc_z = result;
- env->cc_v = 0;
- env->cc_x = shift ? env->cc_c : env->cc_x;
-
- return result;
-}
-
-uint32_t HELPER(shr_cc)(CPUM68KState *env, uint32_t val, uint32_t shift)
-{
- uint64_t temp;
- uint32_t result;
-
- shift &= 63;
- temp = (uint64_t)val << 32 >> shift;
- result = temp >> 32;
-
- env->cc_c = (temp >> 31) & 1;
- env->cc_n = result;
- env->cc_z = result;
- env->cc_v = 0;
- env->cc_x = shift ? env->cc_c : env->cc_x;
-
- return result;
-}
-
-uint32_t HELPER(sar_cc)(CPUM68KState *env, uint32_t val, uint32_t shift)
-{
- uint64_t temp;
- uint32_t result;
-
- shift &= 63;
- temp = (int64_t)val << 32 >> shift;
- result = temp >> 32;
-
- env->cc_c = (temp >> 31) & 1;
- env->cc_n = result;
- env->cc_z = result;
- env->cc_v = result ^ val;
- env->cc_x = shift ? env->cc_c : env->cc_x;
-
- return result;
-}
-
-/* FPU helpers. */
-uint32_t HELPER(f64_to_i32)(CPUM68KState *env, float64 val)
-{
- return float64_to_int32(val, &env->fp_status);
-}
-
-float32 HELPER(f64_to_f32)(CPUM68KState *env, float64 val)
-{
- return float64_to_float32(val, &env->fp_status);
-}
-
-float64 HELPER(i32_to_f64)(CPUM68KState *env, uint32_t val)
-{
- return int32_to_float64(val, &env->fp_status);
-}
-
-float64 HELPER(f32_to_f64)(CPUM68KState *env, float32 val)
-{
- return float32_to_float64(val, &env->fp_status);
-}
-
-float64 HELPER(iround_f64)(CPUM68KState *env, float64 val)
-{
- return float64_round_to_int(val, &env->fp_status);
-}
-
-float64 HELPER(itrunc_f64)(CPUM68KState *env, float64 val)
-{
- return float64_trunc_to_int(val, &env->fp_status);
-}
-
-float64 HELPER(sqrt_f64)(CPUM68KState *env, float64 val)
-{
- return float64_sqrt(val, &env->fp_status);
-}
-
-float64 HELPER(abs_f64)(float64 val)
-{
- return float64_abs(val);
-}
-
-float64 HELPER(chs_f64)(float64 val)
-{
- return float64_chs(val);
-}
-
-float64 HELPER(add_f64)(CPUM68KState *env, float64 a, float64 b)
-{
- return float64_add(a, b, &env->fp_status);
-}
-
-float64 HELPER(sub_f64)(CPUM68KState *env, float64 a, float64 b)
-{
- return float64_sub(a, b, &env->fp_status);
-}
-
-float64 HELPER(mul_f64)(CPUM68KState *env, float64 a, float64 b)
-{
- return float64_mul(a, b, &env->fp_status);
-}
-
-float64 HELPER(div_f64)(CPUM68KState *env, float64 a, float64 b)
-{
- return float64_div(a, b, &env->fp_status);
-}
-
-float64 HELPER(sub_cmp_f64)(CPUM68KState *env, float64 a, float64 b)
-{
- /* ??? This may incorrectly raise exceptions. */
- /* ??? Should flush denormals to zero. */
- float64 res;
- res = float64_sub(a, b, &env->fp_status);
- if (float64_is_quiet_nan(res, &env->fp_status)) {
- /* +/-inf compares equal against itself, but sub returns nan. */
- if (!float64_is_quiet_nan(a, &env->fp_status)
- && !float64_is_quiet_nan(b, &env->fp_status)) {
- res = float64_zero;
- if (float64_lt_quiet(a, res, &env->fp_status))
- res = float64_chs(res);
- }
- }
- return res;
-}
-
-uint32_t HELPER(compare_f64)(CPUM68KState *env, float64 val)
-{
- return float64_compare_quiet(val, float64_zero, &env->fp_status);
-}
-
-/* MAC unit. */
-/* FIXME: The MAC unit implementation is a bit of a mess. Some helpers
- take values, others take register numbers and manipulate the contents
- in-place. */
-void HELPER(mac_move)(CPUM68KState *env, uint32_t dest, uint32_t src)
-{
- uint32_t mask;
- env->macc[dest] = env->macc[src];
- mask = MACSR_PAV0 << dest;
- if (env->macsr & (MACSR_PAV0 << src))
- env->macsr |= mask;
- else
- env->macsr &= ~mask;
-}
-
-uint64_t HELPER(macmuls)(CPUM68KState *env, uint32_t op1, uint32_t op2)
-{
- int64_t product;
- int64_t res;
-
- product = (uint64_t)op1 * op2;
- res = (product << 24) >> 24;
- if (res != product) {
- env->macsr |= MACSR_V;
- if (env->macsr & MACSR_OMC) {
- /* Make sure the accumulate operation overflows. */
- if (product < 0)
- res = ~(1ll << 50);
- else
- res = 1ll << 50;
- }
- }
- return res;
-}
-
-uint64_t HELPER(macmulu)(CPUM68KState *env, uint32_t op1, uint32_t op2)
-{
- uint64_t product;
-
- product = (uint64_t)op1 * op2;
- if (product & (0xffffffull << 40)) {
- env->macsr |= MACSR_V;
- if (env->macsr & MACSR_OMC) {
- /* Make sure the accumulate operation overflows. */
- product = 1ll << 50;
- } else {
- product &= ((1ull << 40) - 1);
- }
- }
- return product;
-}
-
-uint64_t HELPER(macmulf)(CPUM68KState *env, uint32_t op1, uint32_t op2)
-{
- uint64_t product;
- uint32_t remainder;
-
- product = (uint64_t)op1 * op2;
- if (env->macsr & MACSR_RT) {
- remainder = product & 0xffffff;
- product >>= 24;
- if (remainder > 0x800000)
- product++;
- else if (remainder == 0x800000)
- product += (product & 1);
- } else {
- product >>= 24;
- }
- return product;
-}
-
-void HELPER(macsats)(CPUM68KState *env, uint32_t acc)
-{
- int64_t tmp;
- int64_t result;
- tmp = env->macc[acc];
- result = ((tmp << 16) >> 16);
- if (result != tmp) {
- env->macsr |= MACSR_V;
- }
- if (env->macsr & MACSR_V) {
- env->macsr |= MACSR_PAV0 << acc;
- if (env->macsr & MACSR_OMC) {
- /* The result is saturated to 32 bits, despite overflow occurring
- at 48 bits. Seems weird, but that's what the hardware docs
- say. */
- result = (result >> 63) ^ 0x7fffffff;
- }
- }
- env->macc[acc] = result;
-}
-
-void HELPER(macsatu)(CPUM68KState *env, uint32_t acc)
-{
- uint64_t val;
-
- val = env->macc[acc];
- if (val & (0xffffull << 48)) {
- env->macsr |= MACSR_V;
- }
- if (env->macsr & MACSR_V) {
- env->macsr |= MACSR_PAV0 << acc;
- if (env->macsr & MACSR_OMC) {
- if (val > (1ull << 53))
- val = 0;
- else
- val = (1ull << 48) - 1;
- } else {
- val &= ((1ull << 48) - 1);
- }
- }
- env->macc[acc] = val;
-}
-
-void HELPER(macsatf)(CPUM68KState *env, uint32_t acc)
-{
- int64_t sum;
- int64_t result;
-
- sum = env->macc[acc];
- result = (sum << 16) >> 16;
- if (result != sum) {
- env->macsr |= MACSR_V;
- }
- if (env->macsr & MACSR_V) {
- env->macsr |= MACSR_PAV0 << acc;
- if (env->macsr & MACSR_OMC) {
- result = (result >> 63) ^ 0x7fffffffffffll;
- }
- }
- env->macc[acc] = result;
-}
-
-void HELPER(mac_set_flags)(CPUM68KState *env, uint32_t acc)
-{
- uint64_t val;
- val = env->macc[acc];
- if (val == 0) {
- env->macsr |= MACSR_Z;
- } else if (val & (1ull << 47)) {
- env->macsr |= MACSR_N;
- }
- if (env->macsr & (MACSR_PAV0 << acc)) {
- env->macsr |= MACSR_V;
- }
- if (env->macsr & MACSR_FI) {
- val = ((int64_t)val) >> 40;
- if (val != 0 && val != -1)
- env->macsr |= MACSR_EV;
- } else if (env->macsr & MACSR_SU) {
- val = ((int64_t)val) >> 32;
- if (val != 0 && val != -1)
- env->macsr |= MACSR_EV;
- } else {
- if ((val >> 32) != 0)
- env->macsr |= MACSR_EV;
- }
-}
-
-#define EXTSIGN(val, index) ( \
- (index == 0) ? (int8_t)(val) : ((index == 1) ? (int16_t)(val) : (val)) \
-)
-
-#define COMPUTE_CCR(op, x, n, z, v, c) { \
- switch (op) { \
- case CC_OP_FLAGS: \
- /* Everything in place. */ \
- break; \
- case CC_OP_ADDB: \
- case CC_OP_ADDW: \
- case CC_OP_ADDL: \
- res = n; \
- src2 = v; \
- src1 = EXTSIGN(res - src2, op - CC_OP_ADDB); \
- c = x; \
- z = n; \
- v = (res ^ src1) & ~(src1 ^ src2); \
- break; \
- case CC_OP_SUBB: \
- case CC_OP_SUBW: \
- case CC_OP_SUBL: \
- res = n; \
- src2 = v; \
- src1 = EXTSIGN(res + src2, op - CC_OP_SUBB); \
- c = x; \
- z = n; \
- v = (res ^ src1) & (src1 ^ src2); \
- break; \
- case CC_OP_CMPB: \
- case CC_OP_CMPW: \
- case CC_OP_CMPL: \
- src1 = n; \
- src2 = v; \
- res = EXTSIGN(src1 - src2, op - CC_OP_CMPB); \
- n = res; \
- z = res; \
- c = src1 < src2; \
- v = (res ^ src1) & (src1 ^ src2); \
- break; \
- case CC_OP_LOGIC: \
- c = v = 0; \
- z = n; \
- break; \
- default: \
- cpu_abort(CPU(m68k_env_get_cpu(env)), "Bad CC_OP %d", op); \
- } \
-} while (0)
-
-uint32_t cpu_m68k_get_ccr(CPUM68KState *env)
-{
- uint32_t x, c, n, z, v;
- uint32_t res, src1, src2;
-
- x = env->cc_x;
- n = env->cc_n;
- z = env->cc_z;
- v = env->cc_v;
- c = env->cc_c;
-
- COMPUTE_CCR(env->cc_op, x, n, z, v, c);
-
- n = n >> 31;
- z = (z == 0);
- v = v >> 31;
-
- return x * CCF_X + n * CCF_N + z * CCF_Z + v * CCF_V + c * CCF_C;
-}
-
-uint32_t HELPER(get_ccr)(CPUM68KState *env)
-{
- return cpu_m68k_get_ccr(env);
-}
-
-void cpu_m68k_set_ccr(CPUM68KState *env, uint32_t ccr)
-{
- env->cc_x = (ccr & CCF_X ? 1 : 0);
- env->cc_n = (ccr & CCF_N ? -1 : 0);
- env->cc_z = (ccr & CCF_Z ? 0 : 1);
- env->cc_v = (ccr & CCF_V ? -1 : 0);
- env->cc_c = (ccr & CCF_C ? 1 : 0);
- env->cc_op = CC_OP_FLAGS;
-}
-
-void HELPER(set_ccr)(CPUM68KState *env, uint32_t ccr)
-{
- cpu_m68k_set_ccr(env, ccr);
-}
-
-void HELPER(flush_flags)(CPUM68KState *env, uint32_t cc_op)
-{
- uint32_t res, src1, src2;
-
- COMPUTE_CCR(cc_op, env->cc_x, env->cc_n, env->cc_z, env->cc_v, env->cc_c);
- env->cc_op = CC_OP_FLAGS;
-}
-
-uint32_t HELPER(get_macf)(CPUM68KState *env, uint64_t val)
-{
- int rem;
- uint32_t result;
-
- if (env->macsr & MACSR_SU) {
- /* 16-bit rounding. */
- rem = val & 0xffffff;
- val = (val >> 24) & 0xffffu;
- if (rem > 0x800000)
- val++;
- else if (rem == 0x800000)
- val += (val & 1);
- } else if (env->macsr & MACSR_RT) {
- /* 32-bit rounding. */
- rem = val & 0xff;
- val >>= 8;
- if (rem > 0x80)
- val++;
- else if (rem == 0x80)
- val += (val & 1);
- } else {
- /* No rounding. */
- val >>= 8;
- }
- if (env->macsr & MACSR_OMC) {
- /* Saturate. */
- if (env->macsr & MACSR_SU) {
- if (val != (uint16_t) val) {
- result = ((val >> 63) ^ 0x7fff) & 0xffff;
- } else {
- result = val & 0xffff;
- }
- } else {
- if (val != (uint32_t)val) {
- result = ((uint32_t)(val >> 63) & 0x7fffffff);
- } else {
- result = (uint32_t)val;
- }
- }
- } else {
- /* No saturation. */
- if (env->macsr & MACSR_SU) {
- result = val & 0xffff;
- } else {
- result = (uint32_t)val;
- }
- }
- return result;
-}
-
-uint32_t HELPER(get_macs)(uint64_t val)
-{
- if (val == (int32_t)val) {
- return (int32_t)val;
- } else {
- return (val >> 61) ^ ~SIGNBIT;
- }
-}
-
-uint32_t HELPER(get_macu)(uint64_t val)
-{
- if ((val >> 32) == 0) {
- return (uint32_t)val;
- } else {
- return 0xffffffffu;
- }
-}
-
-uint32_t HELPER(get_mac_extf)(CPUM68KState *env, uint32_t acc)
-{
- uint32_t val;
- val = env->macc[acc] & 0x00ff;
- val |= (env->macc[acc] >> 32) & 0xff00;
- val |= (env->macc[acc + 1] << 16) & 0x00ff0000;
- val |= (env->macc[acc + 1] >> 16) & 0xff000000;
- return val;
-}
-
-uint32_t HELPER(get_mac_exti)(CPUM68KState *env, uint32_t acc)
-{
- uint32_t val;
- val = (env->macc[acc] >> 32) & 0xffff;
- val |= (env->macc[acc + 1] >> 16) & 0xffff0000;
- return val;
-}
-
-void HELPER(set_mac_extf)(CPUM68KState *env, uint32_t val, uint32_t acc)
-{
- int64_t res;
- int32_t tmp;
- res = env->macc[acc] & 0xffffffff00ull;
- tmp = (int16_t)(val & 0xff00);
- res |= ((int64_t)tmp) << 32;
- res |= val & 0xff;
- env->macc[acc] = res;
- res = env->macc[acc + 1] & 0xffffffff00ull;
- tmp = (val & 0xff000000);
- res |= ((int64_t)tmp) << 16;
- res |= (val >> 16) & 0xff;
- env->macc[acc + 1] = res;
-}
-
-void HELPER(set_mac_exts)(CPUM68KState *env, uint32_t val, uint32_t acc)
-{
- int64_t res;
- int32_t tmp;
- res = (uint32_t)env->macc[acc];
- tmp = (int16_t)val;
- res |= ((int64_t)tmp) << 32;
- env->macc[acc] = res;
- res = (uint32_t)env->macc[acc + 1];
- tmp = val & 0xffff0000;
- res |= (int64_t)tmp << 16;
- env->macc[acc + 1] = res;
-}
-
-void HELPER(set_mac_extu)(CPUM68KState *env, uint32_t val, uint32_t acc)
-{
- uint64_t res;
- res = (uint32_t)env->macc[acc];
- res |= ((uint64_t)(val & 0xffff)) << 32;
- env->macc[acc] = res;
- res = (uint32_t)env->macc[acc + 1];
- res |= (uint64_t)(val & 0xffff0000) << 16;
- env->macc[acc + 1] = res;
-}
diff --git a/target-m68k/helper.h b/target-m68k/helper.h
deleted file mode 100644
index 2697e32d0b..0000000000
--- a/target-m68k/helper.h
+++ /dev/null
@@ -1,49 +0,0 @@
-DEF_HELPER_1(bitrev, i32, i32)
-DEF_HELPER_1(ff1, i32, i32)
-DEF_HELPER_FLAGS_2(sats, TCG_CALL_NO_RWG_SE, i32, i32, i32)
-DEF_HELPER_2(divu, void, env, i32)
-DEF_HELPER_2(divs, void, env, i32)
-DEF_HELPER_3(shl_cc, i32, env, i32, i32)
-DEF_HELPER_3(shr_cc, i32, env, i32, i32)
-DEF_HELPER_3(sar_cc, i32, env, i32, i32)
-DEF_HELPER_2(set_sr, void, env, i32)
-DEF_HELPER_3(movec, void, env, i32, i32)
-
-DEF_HELPER_2(f64_to_i32, f32, env, f64)
-DEF_HELPER_2(f64_to_f32, f32, env, f64)
-DEF_HELPER_2(i32_to_f64, f64, env, i32)
-DEF_HELPER_2(f32_to_f64, f64, env, f32)
-DEF_HELPER_2(iround_f64, f64, env, f64)
-DEF_HELPER_2(itrunc_f64, f64, env, f64)
-DEF_HELPER_2(sqrt_f64, f64, env, f64)
-DEF_HELPER_1(abs_f64, f64, f64)
-DEF_HELPER_1(chs_f64, f64, f64)
-DEF_HELPER_3(add_f64, f64, env, f64, f64)
-DEF_HELPER_3(sub_f64, f64, env, f64, f64)
-DEF_HELPER_3(mul_f64, f64, env, f64, f64)
-DEF_HELPER_3(div_f64, f64, env, f64, f64)
-DEF_HELPER_3(sub_cmp_f64, f64, env, f64, f64)
-DEF_HELPER_2(compare_f64, i32, env, f64)
-
-DEF_HELPER_3(mac_move, void, env, i32, i32)
-DEF_HELPER_3(macmulf, i64, env, i32, i32)
-DEF_HELPER_3(macmuls, i64, env, i32, i32)
-DEF_HELPER_3(macmulu, i64, env, i32, i32)
-DEF_HELPER_2(macsats, void, env, i32)
-DEF_HELPER_2(macsatu, void, env, i32)
-DEF_HELPER_2(macsatf, void, env, i32)
-DEF_HELPER_2(mac_set_flags, void, env, i32)
-DEF_HELPER_2(set_macsr, void, env, i32)
-DEF_HELPER_2(get_macf, i32, env, i64)
-DEF_HELPER_1(get_macs, i32, i64)
-DEF_HELPER_1(get_macu, i32, i64)
-DEF_HELPER_2(get_mac_extf, i32, env, i32)
-DEF_HELPER_2(get_mac_exti, i32, env, i32)
-DEF_HELPER_3(set_mac_extf, void, env, i32, i32)
-DEF_HELPER_3(set_mac_exts, void, env, i32, i32)
-DEF_HELPER_3(set_mac_extu, void, env, i32, i32)
-
-DEF_HELPER_2(flush_flags, void, env, i32)
-DEF_HELPER_2(set_ccr, void, env, i32)
-DEF_HELPER_FLAGS_1(get_ccr, TCG_CALL_NO_WG_SE, i32, env)
-DEF_HELPER_2(raise_exception, void, env, i32)
diff --git a/target-m68k/m68k-semi.c b/target-m68k/m68k-semi.c
deleted file mode 100644
index 1402145c8f..0000000000
--- a/target-m68k/m68k-semi.c
+++ /dev/null
@@ -1,462 +0,0 @@
-/*
- * m68k/ColdFire Semihosting syscall interface
- *
- * Copyright (c) 2005-2007 CodeSourcery.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "qemu/osdep.h"
-
-#include "cpu.h"
-#if defined(CONFIG_USER_ONLY)
-#include "qemu.h"
-#define SEMIHOSTING_HEAP_SIZE (128 * 1024 * 1024)
-#else
-#include "qemu-common.h"
-#include "exec/gdbstub.h"
-#include "exec/softmmu-semi.h"
-#endif
-#include "qemu/log.h"
-#include "sysemu/sysemu.h"
-
-#define HOSTED_EXIT 0
-#define HOSTED_INIT_SIM 1
-#define HOSTED_OPEN 2
-#define HOSTED_CLOSE 3
-#define HOSTED_READ 4
-#define HOSTED_WRITE 5
-#define HOSTED_LSEEK 6
-#define HOSTED_RENAME 7
-#define HOSTED_UNLINK 8
-#define HOSTED_STAT 9
-#define HOSTED_FSTAT 10
-#define HOSTED_GETTIMEOFDAY 11
-#define HOSTED_ISATTY 12
-#define HOSTED_SYSTEM 13
-
-typedef uint32_t gdb_mode_t;
-typedef uint32_t gdb_time_t;
-
-struct m68k_gdb_stat {
- uint32_t gdb_st_dev; /* device */
- uint32_t gdb_st_ino; /* inode */
- gdb_mode_t gdb_st_mode; /* protection */
- uint32_t gdb_st_nlink; /* number of hard links */
- uint32_t gdb_st_uid; /* user ID of owner */
- uint32_t gdb_st_gid; /* group ID of owner */
- uint32_t gdb_st_rdev; /* device type (if inode device) */
- uint64_t gdb_st_size; /* total size, in bytes */
- uint64_t gdb_st_blksize; /* blocksize for filesystem I/O */
- uint64_t gdb_st_blocks; /* number of blocks allocated */
- gdb_time_t gdb_st_atime; /* time of last access */
- gdb_time_t gdb_st_mtime; /* time of last modification */
- gdb_time_t gdb_st_ctime; /* time of last change */
-} QEMU_PACKED;
-
-struct gdb_timeval {
- gdb_time_t tv_sec; /* second */
- uint64_t tv_usec; /* microsecond */
-} QEMU_PACKED;
-
-#define GDB_O_RDONLY 0x0
-#define GDB_O_WRONLY 0x1
-#define GDB_O_RDWR 0x2
-#define GDB_O_APPEND 0x8
-#define GDB_O_CREAT 0x200
-#define GDB_O_TRUNC 0x400
-#define GDB_O_EXCL 0x800
-
-static int translate_openflags(int flags)
-{
- int hf;
-
- if (flags & GDB_O_WRONLY)
- hf = O_WRONLY;
- else if (flags & GDB_O_RDWR)
- hf = O_RDWR;
- else
- hf = O_RDONLY;
-
- if (flags & GDB_O_APPEND) hf |= O_APPEND;
- if (flags & GDB_O_CREAT) hf |= O_CREAT;
- if (flags & GDB_O_TRUNC) hf |= O_TRUNC;
- if (flags & GDB_O_EXCL) hf |= O_EXCL;
-
- return hf;
-}
-
-static void translate_stat(CPUM68KState *env, target_ulong addr, struct stat *s)
-{
- struct m68k_gdb_stat *p;
-
- if (!(p = lock_user(VERIFY_WRITE, addr, sizeof(struct m68k_gdb_stat), 0)))
- /* FIXME - should this return an error code? */
- return;
- p->gdb_st_dev = cpu_to_be32(s->st_dev);
- p->gdb_st_ino = cpu_to_be32(s->st_ino);
- p->gdb_st_mode = cpu_to_be32(s->st_mode);
- p->gdb_st_nlink = cpu_to_be32(s->st_nlink);
- p->gdb_st_uid = cpu_to_be32(s->st_uid);
- p->gdb_st_gid = cpu_to_be32(s->st_gid);
- p->gdb_st_rdev = cpu_to_be32(s->st_rdev);
- p->gdb_st_size = cpu_to_be64(s->st_size);
-#ifdef _WIN32
- /* Windows stat is missing some fields. */
- p->gdb_st_blksize = 0;
- p->gdb_st_blocks = 0;
-#else
- p->gdb_st_blksize = cpu_to_be64(s->st_blksize);
- p->gdb_st_blocks = cpu_to_be64(s->st_blocks);
-#endif
- p->gdb_st_atime = cpu_to_be32(s->st_atime);
- p->gdb_st_mtime = cpu_to_be32(s->st_mtime);
- p->gdb_st_ctime = cpu_to_be32(s->st_ctime);
- unlock_user(p, addr, sizeof(struct m68k_gdb_stat));
-}
-
-static void m68k_semi_return_u32(CPUM68KState *env, uint32_t ret, uint32_t err)
-{
- target_ulong args = env->dregs[1];
- if (put_user_u32(ret, args) ||
- put_user_u32(err, args + 4)) {
- /* The m68k semihosting ABI does not provide any way to report this
- * error to the guest, so the best we can do is log it in qemu.
- * It is always a guest error not to pass us a valid argument block.
- */
- qemu_log_mask(LOG_GUEST_ERROR, "m68k-semihosting: return value "
- "discarded because argument block not writable\n");
- }
-}
-
-static void m68k_semi_return_u64(CPUM68KState *env, uint64_t ret, uint32_t err)
-{
- target_ulong args = env->dregs[1];
- if (put_user_u32(ret >> 32, args) ||
- put_user_u32(ret, args + 4) ||
- put_user_u32(err, args + 8)) {
- /* No way to report this via m68k semihosting ABI; just log it */
- qemu_log_mask(LOG_GUEST_ERROR, "m68k-semihosting: return value "
- "discarded because argument block not writable\n");
- }
-}
-
-static int m68k_semi_is_fseek;
-
-static void m68k_semi_cb(CPUState *cs, target_ulong ret, target_ulong err)
-{
- M68kCPU *cpu = M68K_CPU(cs);
- CPUM68KState *env = &cpu->env;
-
- if (m68k_semi_is_fseek) {
- /* FIXME: We've already lost the high bits of the fseek
- return value. */
- m68k_semi_return_u64(env, ret, err);
- m68k_semi_is_fseek = 0;
- } else {
- m68k_semi_return_u32(env, ret, err);
- }
-}
-
-/* Read the input value from the argument block; fail the semihosting
- * call if the memory read fails.
- */
-#define GET_ARG(n) do { \
- if (get_user_ual(arg ## n, args + (n) * 4)) { \
- result = -1; \
- errno = EFAULT; \
- goto failed; \
- } \
-} while (0)
-
-void do_m68k_semihosting(CPUM68KState *env, int nr)
-{
- uint32_t args;
- target_ulong arg0, arg1, arg2, arg3;
- void *p;
- void *q;
- uint32_t len;
- uint32_t result;
-
- args = env->dregs[1];
- switch (nr) {
- case HOSTED_EXIT:
- gdb_exit(env, env->dregs[0]);
- exit(env->dregs[0]);
- case HOSTED_OPEN:
- GET_ARG(0);
- GET_ARG(1);
- GET_ARG(2);
- GET_ARG(3);
- if (use_gdb_syscalls()) {
- gdb_do_syscall(m68k_semi_cb, "open,%s,%x,%x", arg0, (int)arg1,
- arg2, arg3);
- return;
- } else {
- p = lock_user_string(arg0);
- if (!p) {
- /* FIXME - check error code? */
- result = -1;
- } else {
- result = open(p, translate_openflags(arg2), arg3);
- unlock_user(p, arg0, 0);
- }
- }
- break;
- case HOSTED_CLOSE:
- {
- /* Ignore attempts to close stdin/out/err. */
- GET_ARG(0);
- int fd = arg0;
- if (fd > 2) {
- if (use_gdb_syscalls()) {
- gdb_do_syscall(m68k_semi_cb, "close,%x", arg0);
- return;
- } else {
- result = close(fd);
- }
- } else {
- result = 0;
- }
- break;
- }
- case HOSTED_READ:
- GET_ARG(0);
- GET_ARG(1);
- GET_ARG(2);
- len = arg2;
- if (use_gdb_syscalls()) {
- gdb_do_syscall(m68k_semi_cb, "read,%x,%x,%x",
- arg0, arg1, len);
- return;
- } else {
- p = lock_user(VERIFY_WRITE, arg1, len, 0);
- if (!p) {
- /* FIXME - check error code? */
- result = -1;
- } else {
- result = read(arg0, p, len);
- unlock_user(p, arg1, len);
- }
- }
- break;
- case HOSTED_WRITE:
- GET_ARG(0);
- GET_ARG(1);
- GET_ARG(2);
- len = arg2;
- if (use_gdb_syscalls()) {
- gdb_do_syscall(m68k_semi_cb, "write,%x,%x,%x",
- arg0, arg1, len);
- return;
- } else {
- p = lock_user(VERIFY_READ, arg1, len, 1);
- if (!p) {
- /* FIXME - check error code? */
- result = -1;
- } else {
- result = write(arg0, p, len);
- unlock_user(p, arg0, 0);
- }
- }
- break;
- case HOSTED_LSEEK:
- {
- uint64_t off;
- GET_ARG(0);
- GET_ARG(1);
- GET_ARG(2);
- GET_ARG(3);
- off = (uint32_t)arg2 | ((uint64_t)arg1 << 32);
- if (use_gdb_syscalls()) {
- m68k_semi_is_fseek = 1;
- gdb_do_syscall(m68k_semi_cb, "fseek,%x,%lx,%x",
- arg0, off, arg3);
- } else {
- off = lseek(arg0, off, arg3);
- m68k_semi_return_u64(env, off, errno);
- }
- return;
- }
- case HOSTED_RENAME:
- GET_ARG(0);
- GET_ARG(1);
- GET_ARG(2);
- GET_ARG(3);
- if (use_gdb_syscalls()) {
- gdb_do_syscall(m68k_semi_cb, "rename,%s,%s",
- arg0, (int)arg1, arg2, (int)arg3);
- return;
- } else {
- p = lock_user_string(arg0);
- q = lock_user_string(arg2);
- if (!p || !q) {
- /* FIXME - check error code? */
- result = -1;
- } else {
- result = rename(p, q);
- }
- unlock_user(p, arg0, 0);
- unlock_user(q, arg2, 0);
- }
- break;
- case HOSTED_UNLINK:
- GET_ARG(0);
- GET_ARG(1);
- if (use_gdb_syscalls()) {
- gdb_do_syscall(m68k_semi_cb, "unlink,%s",
- arg0, (int)arg1);
- return;
- } else {
- p = lock_user_string(arg0);
- if (!p) {
- /* FIXME - check error code? */
- result = -1;
- } else {
- result = unlink(p);
- unlock_user(p, arg0, 0);
- }
- }
- break;
- case HOSTED_STAT:
- GET_ARG(0);
- GET_ARG(1);
- GET_ARG(2);
- if (use_gdb_syscalls()) {
- gdb_do_syscall(m68k_semi_cb, "stat,%s,%x",
- arg0, (int)arg1, arg2);
- return;
- } else {
- struct stat s;
- p = lock_user_string(arg0);
- if (!p) {
- /* FIXME - check error code? */
- result = -1;
- } else {
- result = stat(p, &s);
- unlock_user(p, arg0, 0);
- }
- if (result == 0) {
- translate_stat(env, arg2, &s);
- }
- }
- break;
- case HOSTED_FSTAT:
- GET_ARG(0);
- GET_ARG(1);
- if (use_gdb_syscalls()) {
- gdb_do_syscall(m68k_semi_cb, "fstat,%x,%x",
- arg0, arg1);
- return;
- } else {
- struct stat s;
- result = fstat(arg0, &s);
- if (result == 0) {
- translate_stat(env, arg1, &s);
- }
- }
- break;
- case HOSTED_GETTIMEOFDAY:
- GET_ARG(0);
- GET_ARG(1);
- if (use_gdb_syscalls()) {
- gdb_do_syscall(m68k_semi_cb, "gettimeofday,%x,%x",
- arg0, arg1);
- return;
- } else {
- qemu_timeval tv;
- struct gdb_timeval *p;
- result = qemu_gettimeofday(&tv);
- if (result != 0) {
- if (!(p = lock_user(VERIFY_WRITE,
- arg0, sizeof(struct gdb_timeval), 0))) {
- /* FIXME - check error code? */
- result = -1;
- } else {
- p->tv_sec = cpu_to_be32(tv.tv_sec);
- p->tv_usec = cpu_to_be64(tv.tv_usec);
- unlock_user(p, arg0, sizeof(struct gdb_timeval));
- }
- }
- }
- break;
- case HOSTED_ISATTY:
- GET_ARG(0);
- if (use_gdb_syscalls()) {
- gdb_do_syscall(m68k_semi_cb, "isatty,%x", arg0);
- return;
- } else {
- result = isatty(arg0);
- }
- break;
- case HOSTED_SYSTEM:
- GET_ARG(0);
- GET_ARG(1);
- if (use_gdb_syscalls()) {
- gdb_do_syscall(m68k_semi_cb, "system,%s",
- arg0, (int)arg1);
- return;
- } else {
- p = lock_user_string(arg0);
- if (!p) {
- /* FIXME - check error code? */
- result = -1;
- } else {
- result = system(p);
- unlock_user(p, arg0, 0);
- }
- }
- break;
- case HOSTED_INIT_SIM:
-#if defined(CONFIG_USER_ONLY)
- {
- CPUState *cs = CPU(m68k_env_get_cpu(env));
- TaskState *ts = cs->opaque;
- /* Allocate the heap using sbrk. */
- if (!ts->heap_limit) {
- abi_ulong ret;
- uint32_t size;
- uint32_t base;
-
- base = do_brk(0);
- size = SEMIHOSTING_HEAP_SIZE;
- /* Try a big heap, and reduce the size if that fails. */
- for (;;) {
- ret = do_brk(base + size);
- if (ret >= (base + size)) {
- break;
- }
- size >>= 1;
- }
- ts->heap_limit = base + size;
- }
- /* This call may happen before we have writable memory, so return
- values directly in registers. */
- env->dregs[1] = ts->heap_limit;
- env->aregs[7] = ts->stack_base;
- }
-#else
- /* FIXME: This is wrong for boards where RAM does not start at
- address zero. */
- env->dregs[1] = ram_size;
- env->aregs[7] = ram_size;
-#endif
- return;
- default:
- cpu_abort(CPU(m68k_env_get_cpu(env)), "Unsupported semihosting syscall %d\n", nr);
- result = 0;
- }
-failed:
- m68k_semi_return_u32(env, result, errno);
-}
diff --git a/target-m68k/op_helper.c b/target-m68k/op_helper.c
deleted file mode 100644
index 48e02e4062..0000000000
--- a/target-m68k/op_helper.c
+++ /dev/null
@@ -1,229 +0,0 @@
-/*
- * M68K helper routines
- *
- * Copyright (c) 2007 CodeSourcery
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, see <http://www.gnu.org/licenses/>.
- */
-#include "qemu/osdep.h"
-#include "cpu.h"
-#include "exec/helper-proto.h"
-#include "exec/exec-all.h"
-#include "exec/cpu_ldst.h"
-#include "exec/semihost.h"
-
-#if defined(CONFIG_USER_ONLY)
-
-void m68k_cpu_do_interrupt(CPUState *cs)
-{
- cs->exception_index = -1;
-}
-
-static inline void do_interrupt_m68k_hardirq(CPUM68KState *env)
-{
-}
-
-#else
-
-/* Try to fill the TLB and return an exception if error. If retaddr is
- NULL, it means that the function was called in C code (i.e. not
- from generated code or from helper.c) */
-void tlb_fill(CPUState *cs, target_ulong addr, MMUAccessType access_type,
- int mmu_idx, uintptr_t retaddr)
-{
- int ret;
-
- ret = m68k_cpu_handle_mmu_fault(cs, addr, access_type, mmu_idx);
- if (unlikely(ret)) {
- if (retaddr) {
- /* now we have a real cpu fault */
- cpu_restore_state(cs, retaddr);
- }
- cpu_loop_exit(cs);
- }
-}
-
-static void do_rte(CPUM68KState *env)
-{
- uint32_t sp;
- uint32_t fmt;
-
- sp = env->aregs[7];
- fmt = cpu_ldl_kernel(env, sp);
- env->pc = cpu_ldl_kernel(env, sp + 4);
- sp |= (fmt >> 28) & 3;
- env->aregs[7] = sp + 8;
-
- helper_set_sr(env, fmt);
-}
-
-static void do_interrupt_all(CPUM68KState *env, int is_hw)
-{
- CPUState *cs = CPU(m68k_env_get_cpu(env));
- uint32_t sp;
- uint32_t fmt;
- uint32_t retaddr;
- uint32_t vector;
-
- fmt = 0;
- retaddr = env->pc;
-
- if (!is_hw) {
- switch (cs->exception_index) {
- case EXCP_RTE:
- /* Return from an exception. */
- do_rte(env);
- return;
- case EXCP_HALT_INSN:
- if (semihosting_enabled()
- && (env->sr & SR_S) != 0
- && (env->pc & 3) == 0
- && cpu_lduw_code(env, env->pc - 4) == 0x4e71
- && cpu_ldl_code(env, env->pc) == 0x4e7bf000) {
- env->pc += 4;
- do_m68k_semihosting(env, env->dregs[0]);
- return;
- }
- cs->halted = 1;
- cs->exception_index = EXCP_HLT;
- cpu_loop_exit(cs);
- return;
- }
- if (cs->exception_index >= EXCP_TRAP0
- && cs->exception_index <= EXCP_TRAP15) {
- /* Move the PC after the trap instruction. */
- retaddr += 2;
- }
- }
-
- vector = cs->exception_index << 2;
-
- fmt |= 0x40000000;
- fmt |= vector << 16;
- fmt |= env->sr;
- fmt |= cpu_m68k_get_ccr(env);
-
- env->sr |= SR_S;
- if (is_hw) {
- env->sr = (env->sr & ~SR_I) | (env->pending_level << SR_I_SHIFT);
- env->sr &= ~SR_M;
- }
- m68k_switch_sp(env);
- sp = env->aregs[7];
- fmt |= (sp & 3) << 28;
-
- /* ??? This could cause MMU faults. */
- sp &= ~3;
- sp -= 4;
- cpu_stl_kernel(env, sp, retaddr);
- sp -= 4;
- cpu_stl_kernel(env, sp, fmt);
- env->aregs[7] = sp;
- /* Jump to vector. */
- env->pc = cpu_ldl_kernel(env, env->vbr + vector);
-}
-
-void m68k_cpu_do_interrupt(CPUState *cs)
-{
- M68kCPU *cpu = M68K_CPU(cs);
- CPUM68KState *env = &cpu->env;
-
- do_interrupt_all(env, 0);
-}
-
-static inline void do_interrupt_m68k_hardirq(CPUM68KState *env)
-{
- do_interrupt_all(env, 1);
-}
-#endif
-
-bool m68k_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
-{
- M68kCPU *cpu = M68K_CPU(cs);
- CPUM68KState *env = &cpu->env;
-
- if (interrupt_request & CPU_INTERRUPT_HARD
- && ((env->sr & SR_I) >> SR_I_SHIFT) < env->pending_level) {
- /* Real hardware gets the interrupt vector via an IACK cycle
- at this point. Current emulated hardware doesn't rely on
- this, so we provide/save the vector when the interrupt is
- first signalled. */
- cs->exception_index = env->pending_vector;
- do_interrupt_m68k_hardirq(env);
- return true;
- }
- return false;
-}
-
-static void raise_exception(CPUM68KState *env, int tt)
-{
- CPUState *cs = CPU(m68k_env_get_cpu(env));
-
- cs->exception_index = tt;
- cpu_loop_exit(cs);
-}
-
-void HELPER(raise_exception)(CPUM68KState *env, uint32_t tt)
-{
- raise_exception(env, tt);
-}
-
-void HELPER(divu)(CPUM68KState *env, uint32_t word)
-{
- uint32_t num;
- uint32_t den;
- uint32_t quot;
- uint32_t rem;
-
- num = env->div1;
- den = env->div2;
- /* ??? This needs to make sure the throwing location is accurate. */
- if (den == 0) {
- raise_exception(env, EXCP_DIV0);
- }
- quot = num / den;
- rem = num % den;
-
- env->cc_v = (word && quot > 0xffff ? -1 : 0);
- env->cc_z = quot;
- env->cc_n = quot;
- env->cc_c = 0;
-
- env->div1 = quot;
- env->div2 = rem;
-}
-
-void HELPER(divs)(CPUM68KState *env, uint32_t word)
-{
- int32_t num;
- int32_t den;
- int32_t quot;
- int32_t rem;
-
- num = env->div1;
- den = env->div2;
- if (den == 0) {
- raise_exception(env, EXCP_DIV0);
- }
- quot = num / den;
- rem = num % den;
-
- env->cc_v = (word && quot != (int16_t)quot ? -1 : 0);
- env->cc_z = quot;
- env->cc_n = quot;
- env->cc_c = 0;
-
- env->div1 = quot;
- env->div2 = rem;
-}
diff --git a/target-m68k/qregs.def b/target-m68k/qregs.def
deleted file mode 100644
index 156c0f558f..0000000000
--- a/target-m68k/qregs.def
+++ /dev/null
@@ -1,13 +0,0 @@
-DEFF64(FP_RESULT, fp_result)
-DEFO32(PC, pc)
-DEFO32(SR, sr)
-DEFO32(CC_OP, cc_op)
-DEFO32(CC_X, cc_x)
-DEFO32(CC_C, cc_c)
-DEFO32(CC_N, cc_n)
-DEFO32(CC_V, cc_v)
-DEFO32(CC_Z, cc_z)
-DEFO32(DIV1, div1)
-DEFO32(DIV2, div2)
-DEFO32(MACSR, macsr)
-DEFO32(MAC_MASK, mac_mask)
diff --git a/target-m68k/translate.c b/target-m68k/translate.c
deleted file mode 100644
index d6ed883882..0000000000
--- a/target-m68k/translate.c
+++ /dev/null
@@ -1,3595 +0,0 @@
-/*
- * m68k translation
- *
- * Copyright (c) 2005-2007 CodeSourcery
- * Written by Paul Brook
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "qemu/osdep.h"
-#include "cpu.h"
-#include "disas/disas.h"
-#include "exec/exec-all.h"
-#include "tcg-op.h"
-#include "qemu/log.h"
-#include "exec/cpu_ldst.h"
-
-#include "exec/helper-proto.h"
-#include "exec/helper-gen.h"
-
-#include "trace-tcg.h"
-#include "exec/log.h"
-
-
-//#define DEBUG_DISPATCH 1
-
-/* Fake floating point. */
-#define tcg_gen_mov_f64 tcg_gen_mov_i64
-#define tcg_gen_qemu_ldf64 tcg_gen_qemu_ld64
-#define tcg_gen_qemu_stf64 tcg_gen_qemu_st64
-
-#define DEFO32(name, offset) static TCGv QREG_##name;
-#define DEFO64(name, offset) static TCGv_i64 QREG_##name;
-#define DEFF64(name, offset) static TCGv_i64 QREG_##name;
-#include "qregs.def"
-#undef DEFO32
-#undef DEFO64
-#undef DEFF64
-
-static TCGv_i32 cpu_halted;
-static TCGv_i32 cpu_exception_index;
-
-static TCGv_env cpu_env;
-
-static char cpu_reg_names[3*8*3 + 5*4];
-static TCGv cpu_dregs[8];
-static TCGv cpu_aregs[8];
-static TCGv_i64 cpu_fregs[8];
-static TCGv_i64 cpu_macc[4];
-
-#define REG(insn, pos) (((insn) >> (pos)) & 7)
-#define DREG(insn, pos) cpu_dregs[REG(insn, pos)]
-#define AREG(insn, pos) cpu_aregs[REG(insn, pos)]
-#define FREG(insn, pos) cpu_fregs[REG(insn, pos)]
-#define MACREG(acc) cpu_macc[acc]
-#define QREG_SP cpu_aregs[7]
-
-static TCGv NULL_QREG;
-#define IS_NULL_QREG(t) (TCGV_EQUAL(t, NULL_QREG))
-/* Used to distinguish stores from bad addressing modes. */
-static TCGv store_dummy;
-
-#include "exec/gen-icount.h"
-
-void m68k_tcg_init(void)
-{
- char *p;
- int i;
-
- cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
- tcg_ctx.tcg_env = cpu_env;
-
-#define DEFO32(name, offset) \
- QREG_##name = tcg_global_mem_new_i32(cpu_env, \
- offsetof(CPUM68KState, offset), #name);
-#define DEFO64(name, offset) \
- QREG_##name = tcg_global_mem_new_i64(cpu_env, \
- offsetof(CPUM68KState, offset), #name);
-#define DEFF64(name, offset) DEFO64(name, offset)
-#include "qregs.def"
-#undef DEFO32
-#undef DEFO64
-#undef DEFF64
-
- cpu_halted = tcg_global_mem_new_i32(cpu_env,
- -offsetof(M68kCPU, env) +
- offsetof(CPUState, halted), "HALTED");
- cpu_exception_index = tcg_global_mem_new_i32(cpu_env,
- -offsetof(M68kCPU, env) +
- offsetof(CPUState, exception_index),
- "EXCEPTION");
-
- p = cpu_reg_names;
- for (i = 0; i < 8; i++) {
- sprintf(p, "D%d", i);
- cpu_dregs[i] = tcg_global_mem_new(cpu_env,
- offsetof(CPUM68KState, dregs[i]), p);
- p += 3;
- sprintf(p, "A%d", i);
- cpu_aregs[i] = tcg_global_mem_new(cpu_env,
- offsetof(CPUM68KState, aregs[i]), p);
- p += 3;
- sprintf(p, "F%d", i);
- cpu_fregs[i] = tcg_global_mem_new_i64(cpu_env,
- offsetof(CPUM68KState, fregs[i]), p);
- p += 3;
- }
- for (i = 0; i < 4; i++) {
- sprintf(p, "ACC%d", i);
- cpu_macc[i] = tcg_global_mem_new_i64(cpu_env,
- offsetof(CPUM68KState, macc[i]), p);
- p += 5;
- }
-
- NULL_QREG = tcg_global_mem_new(cpu_env, -4, "NULL");
- store_dummy = tcg_global_mem_new(cpu_env, -8, "NULL");
-}
-
-/* internal defines */
-typedef struct DisasContext {
- CPUM68KState *env;
- target_ulong insn_pc; /* Start of the current instruction. */
- target_ulong pc;
- int is_jmp;
- CCOp cc_op; /* Current CC operation */
- int cc_op_synced;
- int user;
- uint32_t fpcr;
- struct TranslationBlock *tb;
- int singlestep_enabled;
- TCGv_i64 mactmp;
- int done_mac;
-} DisasContext;
-
-#define DISAS_JUMP_NEXT 4
-
-#if defined(CONFIG_USER_ONLY)
-#define IS_USER(s) 1
-#else
-#define IS_USER(s) s->user
-#endif
-
-/* XXX: move that elsewhere */
-/* ??? Fix exceptions. */
-static void *gen_throws_exception;
-#define gen_last_qop NULL
-
-typedef void (*disas_proc)(CPUM68KState *env, DisasContext *s, uint16_t insn);
-
-#ifdef DEBUG_DISPATCH
-#define DISAS_INSN(name) \
- static void real_disas_##name(CPUM68KState *env, DisasContext *s, \
- uint16_t insn); \
- static void disas_##name(CPUM68KState *env, DisasContext *s, \
- uint16_t insn) \
- { \
- qemu_log("Dispatch " #name "\n"); \
- real_disas_##name(env, s, insn); \
- } \
- static void real_disas_##name(CPUM68KState *env, DisasContext *s, \
- uint16_t insn)
-#else
-#define DISAS_INSN(name) \
- static void disas_##name(CPUM68KState *env, DisasContext *s, \
- uint16_t insn)
-#endif
-
-static const uint8_t cc_op_live[CC_OP_NB] = {
- [CC_OP_FLAGS] = CCF_C | CCF_V | CCF_Z | CCF_N | CCF_X,
- [CC_OP_ADDB ... CC_OP_ADDL] = CCF_X | CCF_N | CCF_V,
- [CC_OP_SUBB ... CC_OP_SUBL] = CCF_X | CCF_N | CCF_V,
- [CC_OP_CMPB ... CC_OP_CMPL] = CCF_X | CCF_N | CCF_V,
- [CC_OP_LOGIC] = CCF_X | CCF_N
-};
-
-static void set_cc_op(DisasContext *s, CCOp op)
-{
- CCOp old_op = s->cc_op;
- int dead;
-
- if (old_op == op) {
- return;
- }
- s->cc_op = op;
- s->cc_op_synced = 0;
-
- /* Discard CC computation that will no longer be used.
- Note that X and N are never dead. */
- dead = cc_op_live[old_op] & ~cc_op_live[op];
- if (dead & CCF_C) {
- tcg_gen_discard_i32(QREG_CC_C);
- }
- if (dead & CCF_Z) {
- tcg_gen_discard_i32(QREG_CC_Z);
- }
- if (dead & CCF_V) {
- tcg_gen_discard_i32(QREG_CC_V);
- }
-}
-
-/* Update the CPU env CC_OP state. */
-static void update_cc_op(DisasContext *s)
-{
- if (!s->cc_op_synced) {
- s->cc_op_synced = 1;
- tcg_gen_movi_i32(QREG_CC_OP, s->cc_op);
- }
-}
-
-/* Generate a load from the specified address. Narrow values are
- sign extended to full register width. */
-static inline TCGv gen_load(DisasContext * s, int opsize, TCGv addr, int sign)
-{
- TCGv tmp;
- int index = IS_USER(s);
- tmp = tcg_temp_new_i32();
- switch(opsize) {
- case OS_BYTE:
- if (sign)
- tcg_gen_qemu_ld8s(tmp, addr, index);
- else
- tcg_gen_qemu_ld8u(tmp, addr, index);
- break;
- case OS_WORD:
- if (sign)
- tcg_gen_qemu_ld16s(tmp, addr, index);
- else
- tcg_gen_qemu_ld16u(tmp, addr, index);
- break;
- case OS_LONG:
- case OS_SINGLE:
- tcg_gen_qemu_ld32u(tmp, addr, index);
- break;
- default:
- g_assert_not_reached();
- }
- gen_throws_exception = gen_last_qop;
- return tmp;
-}
-
-static inline TCGv_i64 gen_load64(DisasContext * s, TCGv addr)
-{
- TCGv_i64 tmp;
- int index = IS_USER(s);
- tmp = tcg_temp_new_i64();
- tcg_gen_qemu_ldf64(tmp, addr, index);
- gen_throws_exception = gen_last_qop;
- return tmp;
-}
-
-/* Generate a store. */
-static inline void gen_store(DisasContext *s, int opsize, TCGv addr, TCGv val)
-{
- int index = IS_USER(s);
- switch(opsize) {
- case OS_BYTE:
- tcg_gen_qemu_st8(val, addr, index);
- break;
- case OS_WORD:
- tcg_gen_qemu_st16(val, addr, index);
- break;
- case OS_LONG:
- case OS_SINGLE:
- tcg_gen_qemu_st32(val, addr, index);
- break;
- default:
- g_assert_not_reached();
- }
- gen_throws_exception = gen_last_qop;
-}
-
-static inline void gen_store64(DisasContext *s, TCGv addr, TCGv_i64 val)
-{
- int index = IS_USER(s);
- tcg_gen_qemu_stf64(val, addr, index);
- gen_throws_exception = gen_last_qop;
-}
-
-typedef enum {
- EA_STORE,
- EA_LOADU,
- EA_LOADS
-} ea_what;
-
-/* Generate an unsigned load if VAL is 0 a signed load if val is -1,
- otherwise generate a store. */
-static TCGv gen_ldst(DisasContext *s, int opsize, TCGv addr, TCGv val,
- ea_what what)
-{
- if (what == EA_STORE) {
- gen_store(s, opsize, addr, val);
- return store_dummy;
- } else {
- return gen_load(s, opsize, addr, what == EA_LOADS);
- }
-}
-
-/* Read a 16-bit immediate constant */
-static inline uint16_t read_im16(CPUM68KState *env, DisasContext *s)
-{
- uint16_t im;
- im = cpu_lduw_code(env, s->pc);
- s->pc += 2;
- return im;
-}
-
-/* Read an 8-bit immediate constant */
-static inline uint8_t read_im8(CPUM68KState *env, DisasContext *s)
-{
- return read_im16(env, s);
-}
-
-/* Read a 32-bit immediate constant. */
-static inline uint32_t read_im32(CPUM68KState *env, DisasContext *s)
-{
- uint32_t im;
- im = read_im16(env, s) << 16;
- im |= 0xffff & read_im16(env, s);
- return im;
-}
-
-/* Calculate and address index. */
-static TCGv gen_addr_index(uint16_t ext, TCGv tmp)
-{
- TCGv add;
- int scale;
-
- add = (ext & 0x8000) ? AREG(ext, 12) : DREG(ext, 12);
- if ((ext & 0x800) == 0) {
- tcg_gen_ext16s_i32(tmp, add);
- add = tmp;
- }
- scale = (ext >> 9) & 3;
- if (scale != 0) {
- tcg_gen_shli_i32(tmp, add, scale);
- add = tmp;
- }
- return add;
-}
-
-/* Handle a base + index + displacement effective addresss.
- A NULL_QREG base means pc-relative. */
-static TCGv gen_lea_indexed(CPUM68KState *env, DisasContext *s, TCGv base)
-{
- uint32_t offset;
- uint16_t ext;
- TCGv add;
- TCGv tmp;
- uint32_t bd, od;
-
- offset = s->pc;
- ext = read_im16(env, s);
-
- if ((ext & 0x800) == 0 && !m68k_feature(s->env, M68K_FEATURE_WORD_INDEX))
- return NULL_QREG;
-
- if (m68k_feature(s->env, M68K_FEATURE_M68000) &&
- !m68k_feature(s->env, M68K_FEATURE_SCALED_INDEX)) {
- ext &= ~(3 << 9);
- }
-
- if (ext & 0x100) {
- /* full extension word format */
- if (!m68k_feature(s->env, M68K_FEATURE_EXT_FULL))
- return NULL_QREG;
-
- if ((ext & 0x30) > 0x10) {
- /* base displacement */
- if ((ext & 0x30) == 0x20) {
- bd = (int16_t)read_im16(env, s);
- } else {
- bd = read_im32(env, s);
- }
- } else {
- bd = 0;
- }
- tmp = tcg_temp_new();
- if ((ext & 0x44) == 0) {
- /* pre-index */
- add = gen_addr_index(ext, tmp);
- } else {
- add = NULL_QREG;
- }
- if ((ext & 0x80) == 0) {
- /* base not suppressed */
- if (IS_NULL_QREG(base)) {
- base = tcg_const_i32(offset + bd);
- bd = 0;
- }
- if (!IS_NULL_QREG(add)) {
- tcg_gen_add_i32(tmp, add, base);
- add = tmp;
- } else {
- add = base;
- }
- }
- if (!IS_NULL_QREG(add)) {
- if (bd != 0) {
- tcg_gen_addi_i32(tmp, add, bd);
- add = tmp;
- }
- } else {
- add = tcg_const_i32(bd);
- }
- if ((ext & 3) != 0) {
- /* memory indirect */
- base = gen_load(s, OS_LONG, add, 0);
- if ((ext & 0x44) == 4) {
- add = gen_addr_index(ext, tmp);
- tcg_gen_add_i32(tmp, add, base);
- add = tmp;
- } else {
- add = base;
- }
- if ((ext & 3) > 1) {
- /* outer displacement */
- if ((ext & 3) == 2) {
- od = (int16_t)read_im16(env, s);
- } else {
- od = read_im32(env, s);
- }
- } else {
- od = 0;
- }
- if (od != 0) {
- tcg_gen_addi_i32(tmp, add, od);
- add = tmp;
- }
- }
- } else {
- /* brief extension word format */
- tmp = tcg_temp_new();
- add = gen_addr_index(ext, tmp);
- if (!IS_NULL_QREG(base)) {
- tcg_gen_add_i32(tmp, add, base);
- if ((int8_t)ext)
- tcg_gen_addi_i32(tmp, tmp, (int8_t)ext);
- } else {
- tcg_gen_addi_i32(tmp, add, offset + (int8_t)ext);
- }
- add = tmp;
- }
- return add;
-}
-
-/* Sign or zero extend a value. */
-
-static inline void gen_ext(TCGv res, TCGv val, int opsize, int sign)
-{
- switch (opsize) {
- case OS_BYTE:
- if (sign) {
- tcg_gen_ext8s_i32(res, val);
- } else {
- tcg_gen_ext8u_i32(res, val);
- }
- break;
- case OS_WORD:
- if (sign) {
- tcg_gen_ext16s_i32(res, val);
- } else {
- tcg_gen_ext16u_i32(res, val);
- }
- break;
- case OS_LONG:
- tcg_gen_mov_i32(res, val);
- break;
- default:
- g_assert_not_reached();
- }
-}
-
-/* Evaluate all the CC flags. */
-
-static void gen_flush_flags(DisasContext *s)
-{
- TCGv t0, t1;
-
- switch (s->cc_op) {
- case CC_OP_FLAGS:
- return;
-
- case CC_OP_ADDB:
- case CC_OP_ADDW:
- case CC_OP_ADDL:
- tcg_gen_mov_i32(QREG_CC_C, QREG_CC_X);
- tcg_gen_mov_i32(QREG_CC_Z, QREG_CC_N);
- /* Compute signed overflow for addition. */
- t0 = tcg_temp_new();
- t1 = tcg_temp_new();
- tcg_gen_sub_i32(t0, QREG_CC_N, QREG_CC_V);
- gen_ext(t0, t0, s->cc_op - CC_OP_ADDB, 1);
- tcg_gen_xor_i32(t1, QREG_CC_N, QREG_CC_V);
- tcg_gen_xor_i32(QREG_CC_V, QREG_CC_V, t0);
- tcg_temp_free(t0);
- tcg_gen_andc_i32(QREG_CC_V, t1, QREG_CC_V);
- tcg_temp_free(t1);
- break;
-
- case CC_OP_SUBB:
- case CC_OP_SUBW:
- case CC_OP_SUBL:
- tcg_gen_mov_i32(QREG_CC_C, QREG_CC_X);
- tcg_gen_mov_i32(QREG_CC_Z, QREG_CC_N);
- /* Compute signed overflow for subtraction. */
- t0 = tcg_temp_new();
- t1 = tcg_temp_new();
- tcg_gen_add_i32(t0, QREG_CC_N, QREG_CC_V);
- gen_ext(t0, t0, s->cc_op - CC_OP_SUBB, 1);
- tcg_gen_xor_i32(t1, QREG_CC_N, QREG_CC_V);
- tcg_gen_xor_i32(QREG_CC_V, QREG_CC_V, t0);
- tcg_temp_free(t0);
- tcg_gen_and_i32(QREG_CC_V, QREG_CC_V, t1);
- tcg_temp_free(t1);
- break;
-
- case CC_OP_CMPB:
- case CC_OP_CMPW:
- case CC_OP_CMPL:
- tcg_gen_setcond_i32(TCG_COND_LTU, QREG_CC_C, QREG_CC_N, QREG_CC_V);
- tcg_gen_sub_i32(QREG_CC_Z, QREG_CC_N, QREG_CC_V);
- gen_ext(QREG_CC_Z, QREG_CC_Z, s->cc_op - CC_OP_CMPB, 1);
- /* Compute signed overflow for subtraction. */
- t0 = tcg_temp_new();
- tcg_gen_xor_i32(t0, QREG_CC_Z, QREG_CC_N);
- tcg_gen_xor_i32(QREG_CC_V, QREG_CC_V, QREG_CC_N);
- tcg_gen_and_i32(QREG_CC_V, QREG_CC_V, t0);
- tcg_temp_free(t0);
- tcg_gen_mov_i32(QREG_CC_N, QREG_CC_Z);
- break;
-
- case CC_OP_LOGIC:
- tcg_gen_mov_i32(QREG_CC_Z, QREG_CC_N);
- tcg_gen_movi_i32(QREG_CC_C, 0);
- tcg_gen_movi_i32(QREG_CC_V, 0);
- break;
-
- case CC_OP_DYNAMIC:
- gen_helper_flush_flags(cpu_env, QREG_CC_OP);
- break;
-
- default:
- t0 = tcg_const_i32(s->cc_op);
- gen_helper_flush_flags(cpu_env, t0);
- tcg_temp_free(t0);
- break;
- }
-
- /* Note that flush_flags also assigned to env->cc_op. */
- s->cc_op = CC_OP_FLAGS;
- s->cc_op_synced = 1;
-}
-
-static inline TCGv gen_extend(TCGv val, int opsize, int sign)
-{
- TCGv tmp;
-
- if (opsize == OS_LONG) {
- tmp = val;
- } else {
- tmp = tcg_temp_new();
- gen_ext(tmp, val, opsize, sign);
- }
-
- return tmp;
-}
-
-static void gen_logic_cc(DisasContext *s, TCGv val, int opsize)
-{
- gen_ext(QREG_CC_N, val, opsize, 1);
- set_cc_op(s, CC_OP_LOGIC);
-}
-
-static void gen_update_cc_cmp(DisasContext *s, TCGv dest, TCGv src, int opsize)
-{
- tcg_gen_mov_i32(QREG_CC_N, dest);
- tcg_gen_mov_i32(QREG_CC_V, src);
- set_cc_op(s, CC_OP_CMPB + opsize);
-}
-
-static void gen_update_cc_add(TCGv dest, TCGv src, int opsize)
-{
- gen_ext(QREG_CC_N, dest, opsize, 1);
- tcg_gen_mov_i32(QREG_CC_V, src);
-}
-
-static inline int opsize_bytes(int opsize)
-{
- switch (opsize) {
- case OS_BYTE: return 1;
- case OS_WORD: return 2;
- case OS_LONG: return 4;
- case OS_SINGLE: return 4;
- case OS_DOUBLE: return 8;
- case OS_EXTENDED: return 12;
- case OS_PACKED: return 12;
- default:
- g_assert_not_reached();
- }
-}
-
-static inline int insn_opsize(int insn)
-{
- switch ((insn >> 6) & 3) {
- case 0: return OS_BYTE;
- case 1: return OS_WORD;
- case 2: return OS_LONG;
- default:
- g_assert_not_reached();
- }
-}
-
-/* Assign value to a register. If the width is less than the register width
- only the low part of the register is set. */
-static void gen_partset_reg(int opsize, TCGv reg, TCGv val)
-{
- TCGv tmp;
- switch (opsize) {
- case OS_BYTE:
- tcg_gen_andi_i32(reg, reg, 0xffffff00);
- tmp = tcg_temp_new();
- tcg_gen_ext8u_i32(tmp, val);
- tcg_gen_or_i32(reg, reg, tmp);
- break;
- case OS_WORD:
- tcg_gen_andi_i32(reg, reg, 0xffff0000);
- tmp = tcg_temp_new();
- tcg_gen_ext16u_i32(tmp, val);
- tcg_gen_or_i32(reg, reg, tmp);
- break;
- case OS_LONG:
- case OS_SINGLE:
- tcg_gen_mov_i32(reg, val);
- break;
- default:
- g_assert_not_reached();
- }
-}
-
-/* Generate code for an "effective address". Does not adjust the base
- register for autoincrement addressing modes. */
-static TCGv gen_lea(CPUM68KState *env, DisasContext *s, uint16_t insn,
- int opsize)
-{
- TCGv reg;
- TCGv tmp;
- uint16_t ext;
- uint32_t offset;
-
- switch ((insn >> 3) & 7) {
- case 0: /* Data register direct. */
- case 1: /* Address register direct. */
- return NULL_QREG;
- case 2: /* Indirect register */
- case 3: /* Indirect postincrement. */
- return AREG(insn, 0);
- case 4: /* Indirect predecrememnt. */
- reg = AREG(insn, 0);
- tmp = tcg_temp_new();
- tcg_gen_subi_i32(tmp, reg, opsize_bytes(opsize));
- return tmp;
- case 5: /* Indirect displacement. */
- reg = AREG(insn, 0);
- tmp = tcg_temp_new();
- ext = read_im16(env, s);
- tcg_gen_addi_i32(tmp, reg, (int16_t)ext);
- return tmp;
- case 6: /* Indirect index + displacement. */
- reg = AREG(insn, 0);
- return gen_lea_indexed(env, s, reg);
- case 7: /* Other */
- switch (insn & 7) {
- case 0: /* Absolute short. */
- offset = (int16_t)read_im16(env, s);
- return tcg_const_i32(offset);
- case 1: /* Absolute long. */
- offset = read_im32(env, s);
- return tcg_const_i32(offset);
- case 2: /* pc displacement */
- offset = s->pc;
- offset += (int16_t)read_im16(env, s);
- return tcg_const_i32(offset);
- case 3: /* pc index+displacement. */
- return gen_lea_indexed(env, s, NULL_QREG);
- case 4: /* Immediate. */
- default:
- return NULL_QREG;
- }
- }
- /* Should never happen. */
- return NULL_QREG;
-}
-
-/* Helper function for gen_ea. Reuse the computed address between the
- for read/write operands. */
-static inline TCGv gen_ea_once(CPUM68KState *env, DisasContext *s,
- uint16_t insn, int opsize, TCGv val,
- TCGv *addrp, ea_what what)
-{
- TCGv tmp;
-
- if (addrp && what == EA_STORE) {
- tmp = *addrp;
- } else {
- tmp = gen_lea(env, s, insn, opsize);
- if (IS_NULL_QREG(tmp))
- return tmp;
- if (addrp)
- *addrp = tmp;
- }
- return gen_ldst(s, opsize, tmp, val, what);
-}
-
-/* Generate code to load/store a value from/into an EA. If VAL > 0 this is
- a write otherwise it is a read (0 == sign extend, -1 == zero extend).
- ADDRP is non-null for readwrite operands. */
-static TCGv gen_ea(CPUM68KState *env, DisasContext *s, uint16_t insn,
- int opsize, TCGv val, TCGv *addrp, ea_what what)
-{
- TCGv reg;
- TCGv result;
- uint32_t offset;
-
- switch ((insn >> 3) & 7) {
- case 0: /* Data register direct. */
- reg = DREG(insn, 0);
- if (what == EA_STORE) {
- gen_partset_reg(opsize, reg, val);
- return store_dummy;
- } else {
- return gen_extend(reg, opsize, what == EA_LOADS);
- }
- case 1: /* Address register direct. */
- reg = AREG(insn, 0);
- if (what == EA_STORE) {
- tcg_gen_mov_i32(reg, val);
- return store_dummy;
- } else {
- return gen_extend(reg, opsize, what == EA_LOADS);
- }
- case 2: /* Indirect register */
- reg = AREG(insn, 0);
- return gen_ldst(s, opsize, reg, val, what);
- case 3: /* Indirect postincrement. */
- reg = AREG(insn, 0);
- result = gen_ldst(s, opsize, reg, val, what);
- /* ??? This is not exception safe. The instruction may still
- fault after this point. */
- if (what == EA_STORE || !addrp)
- tcg_gen_addi_i32(reg, reg, opsize_bytes(opsize));
- return result;
- case 4: /* Indirect predecrememnt. */
- {
- TCGv tmp;
- if (addrp && what == EA_STORE) {
- tmp = *addrp;
- } else {
- tmp = gen_lea(env, s, insn, opsize);
- if (IS_NULL_QREG(tmp))
- return tmp;
- if (addrp)
- *addrp = tmp;
- }
- result = gen_ldst(s, opsize, tmp, val, what);
- /* ??? This is not exception safe. The instruction may still
- fault after this point. */
- if (what == EA_STORE || !addrp) {
- reg = AREG(insn, 0);
- tcg_gen_mov_i32(reg, tmp);
- }
- }
- return result;
- case 5: /* Indirect displacement. */
- case 6: /* Indirect index + displacement. */
- return gen_ea_once(env, s, insn, opsize, val, addrp, what);
- case 7: /* Other */
- switch (insn & 7) {
- case 0: /* Absolute short. */
- case 1: /* Absolute long. */
- case 2: /* pc displacement */
- case 3: /* pc index+displacement. */
- return gen_ea_once(env, s, insn, opsize, val, addrp, what);
- case 4: /* Immediate. */
- /* Sign extend values for consistency. */
- switch (opsize) {
- case OS_BYTE:
- if (what == EA_LOADS) {
- offset = (int8_t)read_im8(env, s);
- } else {
- offset = read_im8(env, s);
- }
- break;
- case OS_WORD:
- if (what == EA_LOADS) {
- offset = (int16_t)read_im16(env, s);
- } else {
- offset = read_im16(env, s);
- }
- break;
- case OS_LONG:
- offset = read_im32(env, s);
- break;
- default:
- g_assert_not_reached();
- }
- return tcg_const_i32(offset);
- default:
- return NULL_QREG;
- }
- }
- /* Should never happen. */
- return NULL_QREG;
-}
-
-typedef struct {
- TCGCond tcond;
- bool g1;
- bool g2;
- TCGv v1;
- TCGv v2;
-} DisasCompare;
-
-static void gen_cc_cond(DisasCompare *c, DisasContext *s, int cond)
-{
- TCGv tmp, tmp2;
- TCGCond tcond;
- CCOp op = s->cc_op;
-
- /* The CC_OP_CMP form can handle most normal comparisons directly. */
- if (op == CC_OP_CMPB || op == CC_OP_CMPW || op == CC_OP_CMPL) {
- c->g1 = c->g2 = 1;
- c->v1 = QREG_CC_N;
- c->v2 = QREG_CC_V;
- switch (cond) {
- case 2: /* HI */
- case 3: /* LS */
- tcond = TCG_COND_LEU;
- goto done;
- case 4: /* CC */
- case 5: /* CS */
- tcond = TCG_COND_LTU;
- goto done;
- case 6: /* NE */
- case 7: /* EQ */
- tcond = TCG_COND_EQ;
- goto done;
- case 10: /* PL */
- case 11: /* MI */
- c->g1 = c->g2 = 0;
- c->v2 = tcg_const_i32(0);
- c->v1 = tmp = tcg_temp_new();
- tcg_gen_sub_i32(tmp, QREG_CC_N, QREG_CC_V);
- gen_ext(tmp, tmp, op - CC_OP_CMPB, 1);
- /* fallthru */
- case 12: /* GE */
- case 13: /* LT */
- tcond = TCG_COND_LT;
- goto done;
- case 14: /* GT */
- case 15: /* LE */
- tcond = TCG_COND_LE;
- goto done;
- }
- }
-
- c->g1 = 1;
- c->g2 = 0;
- c->v2 = tcg_const_i32(0);
-
- switch (cond) {
- case 0: /* T */
- case 1: /* F */
- c->v1 = c->v2;
- tcond = TCG_COND_NEVER;
- goto done;
- case 14: /* GT (!(Z || (N ^ V))) */
- case 15: /* LE (Z || (N ^ V)) */
- /* Logic operations clear V, which simplifies LE to (Z || N),
- and since Z and N are co-located, this becomes a normal
- comparison vs N. */
- if (op == CC_OP_LOGIC) {
- c->v1 = QREG_CC_N;
- tcond = TCG_COND_LE;
- goto done;
- }
- break;
- case 12: /* GE (!(N ^ V)) */
- case 13: /* LT (N ^ V) */
- /* Logic operations clear V, which simplifies this to N. */
- if (op != CC_OP_LOGIC) {
- break;
- }
- /* fallthru */
- case 10: /* PL (!N) */
- case 11: /* MI (N) */
- /* Several cases represent N normally. */
- if (op == CC_OP_ADDB || op == CC_OP_ADDW || op == CC_OP_ADDL ||
- op == CC_OP_SUBB || op == CC_OP_SUBW || op == CC_OP_SUBL ||
- op == CC_OP_LOGIC) {
- c->v1 = QREG_CC_N;
- tcond = TCG_COND_LT;
- goto done;
- }
- break;
- case 6: /* NE (!Z) */
- case 7: /* EQ (Z) */
- /* Some cases fold Z into N. */
- if (op == CC_OP_ADDB || op == CC_OP_ADDW || op == CC_OP_ADDL ||
- op == CC_OP_SUBB || op == CC_OP_SUBW || op == CC_OP_SUBL ||
- op == CC_OP_LOGIC) {
- tcond = TCG_COND_EQ;
- c->v1 = QREG_CC_N;
- goto done;
- }
- break;
- case 4: /* CC (!C) */
- case 5: /* CS (C) */
- /* Some cases fold C into X. */
- if (op == CC_OP_ADDB || op == CC_OP_ADDW || op == CC_OP_ADDL ||
- op == CC_OP_ADDB || op == CC_OP_ADDW || op == CC_OP_ADDL) {
- tcond = TCG_COND_NE;
- c->v1 = QREG_CC_X;
- goto done;
- }
- /* fallthru */
- case 8: /* VC (!V) */
- case 9: /* VS (V) */
- /* Logic operations clear V and C. */
- if (op == CC_OP_LOGIC) {
- tcond = TCG_COND_NEVER;
- c->v1 = c->v2;
- goto done;
- }
- break;
- }
-
- /* Otherwise, flush flag state to CC_OP_FLAGS. */
- gen_flush_flags(s);
-
- switch (cond) {
- case 0: /* T */
- case 1: /* F */
- default:
- /* Invalid, or handled above. */
- abort();
- case 2: /* HI (!C && !Z) -> !(C || Z)*/
- case 3: /* LS (C || Z) */
- c->v1 = tmp = tcg_temp_new();
- c->g1 = 0;
- tcg_gen_setcond_i32(TCG_COND_EQ, tmp, QREG_CC_Z, c->v2);
- tcg_gen_or_i32(tmp, tmp, QREG_CC_C);
- tcond = TCG_COND_NE;
- break;
- case 4: /* CC (!C) */
- case 5: /* CS (C) */
- c->v1 = QREG_CC_C;
- tcond = TCG_COND_NE;
- break;
- case 6: /* NE (!Z) */
- case 7: /* EQ (Z) */
- c->v1 = QREG_CC_Z;
- tcond = TCG_COND_EQ;
- break;
- case 8: /* VC (!V) */
- case 9: /* VS (V) */
- c->v1 = QREG_CC_V;
- tcond = TCG_COND_LT;
- break;
- case 10: /* PL (!N) */
- case 11: /* MI (N) */
- c->v1 = QREG_CC_N;
- tcond = TCG_COND_LT;
- break;
- case 12: /* GE (!(N ^ V)) */
- case 13: /* LT (N ^ V) */
- c->v1 = tmp = tcg_temp_new();
- c->g1 = 0;
- tcg_gen_xor_i32(tmp, QREG_CC_N, QREG_CC_V);
- tcond = TCG_COND_LT;
- break;
- case 14: /* GT (!(Z || (N ^ V))) */
- case 15: /* LE (Z || (N ^ V)) */
- c->v1 = tmp = tcg_temp_new();
- c->g1 = 0;
- tcg_gen_setcond_i32(TCG_COND_EQ, tmp, QREG_CC_Z, c->v2);
- tcg_gen_neg_i32(tmp, tmp);
- tmp2 = tcg_temp_new();
- tcg_gen_xor_i32(tmp2, QREG_CC_N, QREG_CC_V);
- tcg_gen_or_i32(tmp, tmp, tmp2);
- tcg_temp_free(tmp2);
- tcond = TCG_COND_LT;
- break;
- }
-
- done:
- if ((cond & 1) == 0) {
- tcond = tcg_invert_cond(tcond);
- }
- c->tcond = tcond;
-}
-
-static void free_cond(DisasCompare *c)
-{
- if (!c->g1) {
- tcg_temp_free(c->v1);
- }
- if (!c->g2) {
- tcg_temp_free(c->v2);
- }
-}
-
-static void gen_jmpcc(DisasContext *s, int cond, TCGLabel *l1)
-{
- DisasCompare c;
-
- gen_cc_cond(&c, s, cond);
- update_cc_op(s);
- tcg_gen_brcond_i32(c.tcond, c.v1, c.v2, l1);
- free_cond(&c);
-}
-
-/* Force a TB lookup after an instruction that changes the CPU state. */
-static void gen_lookup_tb(DisasContext *s)
-{
- update_cc_op(s);
- tcg_gen_movi_i32(QREG_PC, s->pc);
- s->is_jmp = DISAS_UPDATE;
-}
-
-/* Generate a jump to an immediate address. */
-static void gen_jmp_im(DisasContext *s, uint32_t dest)
-{
- update_cc_op(s);
- tcg_gen_movi_i32(QREG_PC, dest);
- s->is_jmp = DISAS_JUMP;
-}
-
-/* Generate a jump to the address in qreg DEST. */
-static void gen_jmp(DisasContext *s, TCGv dest)
-{
- update_cc_op(s);
- tcg_gen_mov_i32(QREG_PC, dest);
- s->is_jmp = DISAS_JUMP;
-}
-
-static void gen_exception(DisasContext *s, uint32_t where, int nr)
-{
- update_cc_op(s);
- gen_jmp_im(s, where);
- gen_helper_raise_exception(cpu_env, tcg_const_i32(nr));
-}
-
-static inline void gen_addr_fault(DisasContext *s)
-{
- gen_exception(s, s->insn_pc, EXCP_ADDRESS);
-}
-
-#define SRC_EA(env, result, opsize, op_sign, addrp) do { \
- result = gen_ea(env, s, insn, opsize, NULL_QREG, addrp, \
- op_sign ? EA_LOADS : EA_LOADU); \
- if (IS_NULL_QREG(result)) { \
- gen_addr_fault(s); \
- return; \
- } \
- } while (0)
-
-#define DEST_EA(env, insn, opsize, val, addrp) do { \
- TCGv ea_result = gen_ea(env, s, insn, opsize, val, addrp, EA_STORE); \
- if (IS_NULL_QREG(ea_result)) { \
- gen_addr_fault(s); \
- return; \
- } \
- } while (0)
-
-static inline bool use_goto_tb(DisasContext *s, uint32_t dest)
-{
-#ifndef CONFIG_USER_ONLY
- return (s->tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK) ||
- (s->insn_pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK);
-#else
- return true;
-#endif
-}
-
-/* Generate a jump to an immediate address. */
-static void gen_jmp_tb(DisasContext *s, int n, uint32_t dest)
-{
- if (unlikely(s->singlestep_enabled)) {
- gen_exception(s, dest, EXCP_DEBUG);
- } else if (use_goto_tb(s, dest)) {
- tcg_gen_goto_tb(n);
- tcg_gen_movi_i32(QREG_PC, dest);
- tcg_gen_exit_tb((uintptr_t)s->tb + n);
- } else {
- gen_jmp_im(s, dest);
- tcg_gen_exit_tb(0);
- }
- s->is_jmp = DISAS_TB_JUMP;
-}
-
-DISAS_INSN(scc)
-{
- DisasCompare c;
- int cond;
- TCGv tmp;
-
- cond = (insn >> 8) & 0xf;
- gen_cc_cond(&c, s, cond);
-
- tmp = tcg_temp_new();
- tcg_gen_setcond_i32(c.tcond, tmp, c.v1, c.v2);
- free_cond(&c);
-
- tcg_gen_neg_i32(tmp, tmp);
- DEST_EA(env, insn, OS_BYTE, tmp, NULL);
- tcg_temp_free(tmp);
-}
-
-DISAS_INSN(dbcc)
-{
- TCGLabel *l1;
- TCGv reg;
- TCGv tmp;
- int16_t offset;
- uint32_t base;
-
- reg = DREG(insn, 0);
- base = s->pc;
- offset = (int16_t)read_im16(env, s);
- l1 = gen_new_label();
- gen_jmpcc(s, (insn >> 8) & 0xf, l1);
-
- tmp = tcg_temp_new();
- tcg_gen_ext16s_i32(tmp, reg);
- tcg_gen_addi_i32(tmp, tmp, -1);
- gen_partset_reg(OS_WORD, reg, tmp);
- tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, -1, l1);
- gen_jmp_tb(s, 1, base + offset);
- gen_set_label(l1);
- gen_jmp_tb(s, 0, s->pc);
-}
-
-DISAS_INSN(undef_mac)
-{
- gen_exception(s, s->pc - 2, EXCP_LINEA);
-}
-
-DISAS_INSN(undef_fpu)
-{
- gen_exception(s, s->pc - 2, EXCP_LINEF);
-}
-
-DISAS_INSN(undef)
-{
- M68kCPU *cpu = m68k_env_get_cpu(env);
-
- gen_exception(s, s->pc - 2, EXCP_UNSUPPORTED);
- cpu_abort(CPU(cpu), "Illegal instruction: %04x @ %08x", insn, s->pc - 2);
-}
-
-DISAS_INSN(mulw)
-{
- TCGv reg;
- TCGv tmp;
- TCGv src;
- int sign;
-
- sign = (insn & 0x100) != 0;
- reg = DREG(insn, 9);
- tmp = tcg_temp_new();
- if (sign)
- tcg_gen_ext16s_i32(tmp, reg);
- else
- tcg_gen_ext16u_i32(tmp, reg);
- SRC_EA(env, src, OS_WORD, sign, NULL);
- tcg_gen_mul_i32(tmp, tmp, src);
- tcg_gen_mov_i32(reg, tmp);
- gen_logic_cc(s, tmp, OS_LONG);
-}
-
-DISAS_INSN(divw)
-{
- TCGv reg;
- TCGv tmp;
- TCGv src;
- int sign;
-
- sign = (insn & 0x100) != 0;
- reg = DREG(insn, 9);
- if (sign) {
- tcg_gen_ext16s_i32(QREG_DIV1, reg);
- } else {
- tcg_gen_ext16u_i32(QREG_DIV1, reg);
- }
- SRC_EA(env, src, OS_WORD, sign, NULL);
- tcg_gen_mov_i32(QREG_DIV2, src);
- if (sign) {
- gen_helper_divs(cpu_env, tcg_const_i32(1));
- } else {
- gen_helper_divu(cpu_env, tcg_const_i32(1));
- }
-
- tmp = tcg_temp_new();
- src = tcg_temp_new();
- tcg_gen_ext16u_i32(tmp, QREG_DIV1);
- tcg_gen_shli_i32(src, QREG_DIV2, 16);
- tcg_gen_or_i32(reg, tmp, src);
-
- set_cc_op(s, CC_OP_FLAGS);
-}
-
-DISAS_INSN(divl)
-{
- TCGv num;
- TCGv den;
- TCGv reg;
- uint16_t ext;
-
- ext = read_im16(env, s);
- if (ext & 0x87f8) {
- gen_exception(s, s->pc - 4, EXCP_UNSUPPORTED);
- return;
- }
- num = DREG(ext, 12);
- reg = DREG(ext, 0);
- tcg_gen_mov_i32(QREG_DIV1, num);
- SRC_EA(env, den, OS_LONG, 0, NULL);
- tcg_gen_mov_i32(QREG_DIV2, den);
- if (ext & 0x0800) {
- gen_helper_divs(cpu_env, tcg_const_i32(0));
- } else {
- gen_helper_divu(cpu_env, tcg_const_i32(0));
- }
- if ((ext & 7) == ((ext >> 12) & 7)) {
- /* div */
- tcg_gen_mov_i32 (reg, QREG_DIV1);
- } else {
- /* rem */
- tcg_gen_mov_i32 (reg, QREG_DIV2);
- }
- set_cc_op(s, CC_OP_FLAGS);
-}
-
-DISAS_INSN(addsub)
-{
- TCGv reg;
- TCGv dest;
- TCGv src;
- TCGv tmp;
- TCGv addr;
- int add;
- int opsize;
-
- add = (insn & 0x4000) != 0;
- opsize = insn_opsize(insn);
- reg = gen_extend(DREG(insn, 9), opsize, 1);
- dest = tcg_temp_new();
- if (insn & 0x100) {
- SRC_EA(env, tmp, opsize, 1, &addr);
- src = reg;
- } else {
- tmp = reg;
- SRC_EA(env, src, opsize, 1, NULL);
- }
- if (add) {
- tcg_gen_add_i32(dest, tmp, src);
- tcg_gen_setcond_i32(TCG_COND_LTU, QREG_CC_X, dest, src);
- set_cc_op(s, CC_OP_ADDB + opsize);
- } else {
- tcg_gen_setcond_i32(TCG_COND_LTU, QREG_CC_X, tmp, src);
- tcg_gen_sub_i32(dest, tmp, src);
- set_cc_op(s, CC_OP_SUBB + opsize);
- }
- gen_update_cc_add(dest, src, opsize);
- if (insn & 0x100) {
- DEST_EA(env, insn, opsize, dest, &addr);
- } else {
- gen_partset_reg(opsize, DREG(insn, 9), dest);
- }
- tcg_temp_free(dest);
-}
-
-/* Reverse the order of the bits in REG. */
-DISAS_INSN(bitrev)
-{
- TCGv reg;
- reg = DREG(insn, 0);
- gen_helper_bitrev(reg, reg);
-}
-
-DISAS_INSN(bitop_reg)
-{
- int opsize;
- int op;
- TCGv src1;
- TCGv src2;
- TCGv tmp;
- TCGv addr;
- TCGv dest;
-
- if ((insn & 0x38) != 0)
- opsize = OS_BYTE;
- else
- opsize = OS_LONG;
- op = (insn >> 6) & 3;
- SRC_EA(env, src1, opsize, 0, op ? &addr: NULL);
-
- gen_flush_flags(s);
- src2 = tcg_temp_new();
- if (opsize == OS_BYTE)
- tcg_gen_andi_i32(src2, DREG(insn, 9), 7);
- else
- tcg_gen_andi_i32(src2, DREG(insn, 9), 31);
-
- tmp = tcg_const_i32(1);
- tcg_gen_shl_i32(tmp, tmp, src2);
- tcg_temp_free(src2);
-
- tcg_gen_and_i32(QREG_CC_Z, src1, tmp);
-
- dest = tcg_temp_new();
- switch (op) {
- case 1: /* bchg */
- tcg_gen_xor_i32(dest, src1, tmp);
- break;
- case 2: /* bclr */
- tcg_gen_andc_i32(dest, src1, tmp);
- break;
- case 3: /* bset */
- tcg_gen_or_i32(dest, src1, tmp);
- break;
- default: /* btst */
- break;
- }
- tcg_temp_free(tmp);
- if (op) {
- DEST_EA(env, insn, opsize, dest, &addr);
- }
- tcg_temp_free(dest);
-}
-
-DISAS_INSN(sats)
-{
- TCGv reg;
- reg = DREG(insn, 0);
- gen_flush_flags(s);
- gen_helper_sats(reg, reg, QREG_CC_V);
- gen_logic_cc(s, reg, OS_LONG);
-}
-
-static void gen_push(DisasContext *s, TCGv val)
-{
- TCGv tmp;
-
- tmp = tcg_temp_new();
- tcg_gen_subi_i32(tmp, QREG_SP, 4);
- gen_store(s, OS_LONG, tmp, val);
- tcg_gen_mov_i32(QREG_SP, tmp);
-}
-
-DISAS_INSN(movem)
-{
- TCGv addr;
- int i;
- uint16_t mask;
- TCGv reg;
- TCGv tmp;
- int is_load;
-
- mask = read_im16(env, s);
- tmp = gen_lea(env, s, insn, OS_LONG);
- if (IS_NULL_QREG(tmp)) {
- gen_addr_fault(s);
- return;
- }
- addr = tcg_temp_new();
- tcg_gen_mov_i32(addr, tmp);
- is_load = ((insn & 0x0400) != 0);
- for (i = 0; i < 16; i++, mask >>= 1) {
- if (mask & 1) {
- if (i < 8)
- reg = DREG(i, 0);
- else
- reg = AREG(i, 0);
- if (is_load) {
- tmp = gen_load(s, OS_LONG, addr, 0);
- tcg_gen_mov_i32(reg, tmp);
- } else {
- gen_store(s, OS_LONG, addr, reg);
- }
- if (mask != 1)
- tcg_gen_addi_i32(addr, addr, 4);
- }
- }
-}
-
-DISAS_INSN(bitop_im)
-{
- int opsize;
- int op;
- TCGv src1;
- uint32_t mask;
- int bitnum;
- TCGv tmp;
- TCGv addr;
-
- if ((insn & 0x38) != 0)
- opsize = OS_BYTE;
- else
- opsize = OS_LONG;
- op = (insn >> 6) & 3;
-
- bitnum = read_im16(env, s);
- if (bitnum & 0xff00) {
- disas_undef(env, s, insn);
- return;
- }
-
- SRC_EA(env, src1, opsize, 0, op ? &addr: NULL);
-
- gen_flush_flags(s);
- if (opsize == OS_BYTE)
- bitnum &= 7;
- else
- bitnum &= 31;
- mask = 1 << bitnum;
-
- tcg_gen_andi_i32(QREG_CC_Z, src1, mask);
-
- if (op) {
- tmp = tcg_temp_new();
- switch (op) {
- case 1: /* bchg */
- tcg_gen_xori_i32(tmp, src1, mask);
- break;
- case 2: /* bclr */
- tcg_gen_andi_i32(tmp, src1, ~mask);
- break;
- case 3: /* bset */
- tcg_gen_ori_i32(tmp, src1, mask);
- break;
- default: /* btst */
- break;
- }
- DEST_EA(env, insn, opsize, tmp, &addr);
- tcg_temp_free(tmp);
- }
-}
-
-DISAS_INSN(arith_im)
-{
- int op;
- TCGv im;
- TCGv src1;
- TCGv dest;
- TCGv addr;
- int opsize;
-
- op = (insn >> 9) & 7;
- opsize = insn_opsize(insn);
- switch (opsize) {
- case OS_BYTE:
- im = tcg_const_i32((int8_t)read_im8(env, s));
- break;
- case OS_WORD:
- im = tcg_const_i32((int16_t)read_im16(env, s));
- break;
- case OS_LONG:
- im = tcg_const_i32(read_im32(env, s));
- break;
- default:
- abort();
- }
- SRC_EA(env, src1, opsize, 1, (op == 6) ? NULL : &addr);
- dest = tcg_temp_new();
- switch (op) {
- case 0: /* ori */
- tcg_gen_or_i32(dest, src1, im);
- gen_logic_cc(s, dest, opsize);
- break;
- case 1: /* andi */
- tcg_gen_and_i32(dest, src1, im);
- gen_logic_cc(s, dest, opsize);
- break;
- case 2: /* subi */
- tcg_gen_setcond_i32(TCG_COND_LTU, QREG_CC_X, src1, im);
- tcg_gen_sub_i32(dest, src1, im);
- gen_update_cc_add(dest, im, opsize);
- set_cc_op(s, CC_OP_SUBB + opsize);
- break;
- case 3: /* addi */
- tcg_gen_add_i32(dest, src1, im);
- gen_update_cc_add(dest, im, opsize);
- tcg_gen_setcond_i32(TCG_COND_LTU, QREG_CC_X, dest, im);
- set_cc_op(s, CC_OP_ADDB + opsize);
- break;
- case 5: /* eori */
- tcg_gen_xor_i32(dest, src1, im);
- gen_logic_cc(s, dest, opsize);
- break;
- case 6: /* cmpi */
- gen_update_cc_cmp(s, src1, im, opsize);
- break;
- default:
- abort();
- }
- tcg_temp_free(im);
- if (op != 6) {
- DEST_EA(env, insn, opsize, dest, &addr);
- }
- tcg_temp_free(dest);
-}
-
-DISAS_INSN(byterev)
-{
- TCGv reg;
-
- reg = DREG(insn, 0);
- tcg_gen_bswap32_i32(reg, reg);
-}
-
-DISAS_INSN(move)
-{
- TCGv src;
- TCGv dest;
- int op;
- int opsize;
-
- switch (insn >> 12) {
- case 1: /* move.b */
- opsize = OS_BYTE;
- break;
- case 2: /* move.l */
- opsize = OS_LONG;
- break;
- case 3: /* move.w */
- opsize = OS_WORD;
- break;
- default:
- abort();
- }
- SRC_EA(env, src, opsize, 1, NULL);
- op = (insn >> 6) & 7;
- if (op == 1) {
- /* movea */
- /* The value will already have been sign extended. */
- dest = AREG(insn, 9);
- tcg_gen_mov_i32(dest, src);
- } else {
- /* normal move */
- uint16_t dest_ea;
- dest_ea = ((insn >> 9) & 7) | (op << 3);
- DEST_EA(env, dest_ea, opsize, src, NULL);
- /* This will be correct because loads sign extend. */
- gen_logic_cc(s, src, opsize);
- }
-}
-
-DISAS_INSN(negx)
-{
- TCGv z;
- TCGv src;
- TCGv addr;
- int opsize;
-
- opsize = insn_opsize(insn);
- SRC_EA(env, src, opsize, 1, &addr);
-
- gen_flush_flags(s); /* compute old Z */
-
- /* Perform substract with borrow.
- * (X, N) = -(src + X);
- */
-
- z = tcg_const_i32(0);
- tcg_gen_add2_i32(QREG_CC_N, QREG_CC_X, src, z, QREG_CC_X, z);
- tcg_gen_sub2_i32(QREG_CC_N, QREG_CC_X, z, z, QREG_CC_N, QREG_CC_X);
- tcg_temp_free(z);
- gen_ext(QREG_CC_N, QREG_CC_N, opsize, 1);
-
- tcg_gen_andi_i32(QREG_CC_X, QREG_CC_X, 1);
-
- /* Compute signed-overflow for negation. The normal formula for
- * subtraction is (res ^ src) & (src ^ dest), but with dest==0
- * this simplies to res & src.
- */
-
- tcg_gen_and_i32(QREG_CC_V, QREG_CC_N, src);
-
- /* Copy the rest of the results into place. */
- tcg_gen_or_i32(QREG_CC_Z, QREG_CC_Z, QREG_CC_N); /* !Z is sticky */
- tcg_gen_mov_i32(QREG_CC_C, QREG_CC_X);
-
- set_cc_op(s, CC_OP_FLAGS);
-
- /* result is in QREG_CC_N */
-
- DEST_EA(env, insn, opsize, QREG_CC_N, &addr);
-}
-
-DISAS_INSN(lea)
-{
- TCGv reg;
- TCGv tmp;
-
- reg = AREG(insn, 9);
- tmp = gen_lea(env, s, insn, OS_LONG);
- if (IS_NULL_QREG(tmp)) {
- gen_addr_fault(s);
- return;
- }
- tcg_gen_mov_i32(reg, tmp);
-}
-
-DISAS_INSN(clr)
-{
- int opsize;
-
- opsize = insn_opsize(insn);
- DEST_EA(env, insn, opsize, tcg_const_i32(0), NULL);
- gen_logic_cc(s, tcg_const_i32(0), opsize);
-}
-
-static TCGv gen_get_ccr(DisasContext *s)
-{
- TCGv dest;
-
- gen_flush_flags(s);
- update_cc_op(s);
- dest = tcg_temp_new();
- gen_helper_get_ccr(dest, cpu_env);
- return dest;
-}
-
-DISAS_INSN(move_from_ccr)
-{
- TCGv ccr;
-
- ccr = gen_get_ccr(s);
- DEST_EA(env, insn, OS_WORD, ccr, NULL);
-}
-
-DISAS_INSN(neg)
-{
- TCGv src1;
- TCGv dest;
- TCGv addr;
- int opsize;
-
- opsize = insn_opsize(insn);
- SRC_EA(env, src1, opsize, 1, &addr);
- dest = tcg_temp_new();
- tcg_gen_neg_i32(dest, src1);
- set_cc_op(s, CC_OP_SUBB + opsize);
- gen_update_cc_add(dest, src1, opsize);
- tcg_gen_setcondi_i32(TCG_COND_NE, QREG_CC_X, dest, 0);
- DEST_EA(env, insn, opsize, dest, &addr);
- tcg_temp_free(dest);
-}
-
-static void gen_set_sr_im(DisasContext *s, uint16_t val, int ccr_only)
-{
- if (ccr_only) {
- tcg_gen_movi_i32(QREG_CC_C, val & CCF_C ? 1 : 0);
- tcg_gen_movi_i32(QREG_CC_V, val & CCF_V ? -1 : 0);
- tcg_gen_movi_i32(QREG_CC_Z, val & CCF_Z ? 0 : 1);
- tcg_gen_movi_i32(QREG_CC_N, val & CCF_N ? -1 : 0);
- tcg_gen_movi_i32(QREG_CC_X, val & CCF_X ? 1 : 0);
- } else {
- gen_helper_set_sr(cpu_env, tcg_const_i32(val));
- }
- set_cc_op(s, CC_OP_FLAGS);
-}
-
-static void gen_set_sr(CPUM68KState *env, DisasContext *s, uint16_t insn,
- int ccr_only)
-{
- if ((insn & 0x38) == 0) {
- if (ccr_only) {
- gen_helper_set_ccr(cpu_env, DREG(insn, 0));
- } else {
- gen_helper_set_sr(cpu_env, DREG(insn, 0));
- }
- set_cc_op(s, CC_OP_FLAGS);
- } else if ((insn & 0x3f) == 0x3c) {
- uint16_t val;
- val = read_im16(env, s);
- gen_set_sr_im(s, val, ccr_only);
- } else {
- disas_undef(env, s, insn);
- }
-}
-
-
-DISAS_INSN(move_to_ccr)
-{
- gen_set_sr(env, s, insn, 1);
-}
-
-DISAS_INSN(not)
-{
- TCGv src1;
- TCGv dest;
- TCGv addr;
- int opsize;
-
- opsize = insn_opsize(insn);
- SRC_EA(env, src1, opsize, 1, &addr);
- dest = tcg_temp_new();
- tcg_gen_not_i32(dest, src1);
- DEST_EA(env, insn, opsize, dest, &addr);
- gen_logic_cc(s, dest, opsize);
-}
-
-DISAS_INSN(swap)
-{
- TCGv src1;
- TCGv src2;
- TCGv reg;
-
- src1 = tcg_temp_new();
- src2 = tcg_temp_new();
- reg = DREG(insn, 0);
- tcg_gen_shli_i32(src1, reg, 16);
- tcg_gen_shri_i32(src2, reg, 16);
- tcg_gen_or_i32(reg, src1, src2);
- gen_logic_cc(s, reg, OS_LONG);
-}
-
-DISAS_INSN(bkpt)
-{
- gen_exception(s, s->pc - 2, EXCP_DEBUG);
-}
-
-DISAS_INSN(pea)
-{
- TCGv tmp;
-
- tmp = gen_lea(env, s, insn, OS_LONG);
- if (IS_NULL_QREG(tmp)) {
- gen_addr_fault(s);
- return;
- }
- gen_push(s, tmp);
-}
-
-DISAS_INSN(ext)
-{
- int op;
- TCGv reg;
- TCGv tmp;
-
- reg = DREG(insn, 0);
- op = (insn >> 6) & 7;
- tmp = tcg_temp_new();
- if (op == 3)
- tcg_gen_ext16s_i32(tmp, reg);
- else
- tcg_gen_ext8s_i32(tmp, reg);
- if (op == 2)
- gen_partset_reg(OS_WORD, reg, tmp);
- else
- tcg_gen_mov_i32(reg, tmp);
- gen_logic_cc(s, tmp, OS_LONG);
-}
-
-DISAS_INSN(tst)
-{
- int opsize;
- TCGv tmp;
-
- opsize = insn_opsize(insn);
- SRC_EA(env, tmp, opsize, 1, NULL);
- gen_logic_cc(s, tmp, opsize);
-}
-
-DISAS_INSN(pulse)
-{
- /* Implemented as a NOP. */
-}
-
-DISAS_INSN(illegal)
-{
- gen_exception(s, s->pc - 2, EXCP_ILLEGAL);
-}
-
-/* ??? This should be atomic. */
-DISAS_INSN(tas)
-{
- TCGv dest;
- TCGv src1;
- TCGv addr;
-
- dest = tcg_temp_new();
- SRC_EA(env, src1, OS_BYTE, 1, &addr);
- gen_logic_cc(s, src1, OS_BYTE);
- tcg_gen_ori_i32(dest, src1, 0x80);
- DEST_EA(env, insn, OS_BYTE, dest, &addr);
-}
-
-DISAS_INSN(mull)
-{
- uint16_t ext;
- TCGv reg;
- TCGv src1;
- TCGv dest;
-
- /* The upper 32 bits of the product are discarded, so
- muls.l and mulu.l are functionally equivalent. */
- ext = read_im16(env, s);
- if (ext & 0x87ff) {
- gen_exception(s, s->pc - 4, EXCP_UNSUPPORTED);
- return;
- }
- reg = DREG(ext, 12);
- SRC_EA(env, src1, OS_LONG, 0, NULL);
- dest = tcg_temp_new();
- tcg_gen_mul_i32(dest, src1, reg);
- tcg_gen_mov_i32(reg, dest);
- /* Unlike m68k, coldfire always clears the overflow bit. */
- gen_logic_cc(s, dest, OS_LONG);
-}
-
-static void gen_link(DisasContext *s, uint16_t insn, int32_t offset)
-{
- TCGv reg;
- TCGv tmp;
-
- reg = AREG(insn, 0);
- tmp = tcg_temp_new();
- tcg_gen_subi_i32(tmp, QREG_SP, 4);
- gen_store(s, OS_LONG, tmp, reg);
- if ((insn & 7) != 7) {
- tcg_gen_mov_i32(reg, tmp);
- }
- tcg_gen_addi_i32(QREG_SP, tmp, offset);
- tcg_temp_free(tmp);
-}
-
-DISAS_INSN(link)
-{
- int16_t offset;
-
- offset = read_im16(env, s);
- gen_link(s, insn, offset);
-}
-
-DISAS_INSN(linkl)
-{
- int32_t offset;
-
- offset = read_im32(env, s);
- gen_link(s, insn, offset);
-}
-
-DISAS_INSN(unlk)
-{
- TCGv src;
- TCGv reg;
- TCGv tmp;
-
- src = tcg_temp_new();
- reg = AREG(insn, 0);
- tcg_gen_mov_i32(src, reg);
- tmp = gen_load(s, OS_LONG, src, 0);
- tcg_gen_mov_i32(reg, tmp);
- tcg_gen_addi_i32(QREG_SP, src, 4);
-}
-
-DISAS_INSN(nop)
-{
-}
-
-DISAS_INSN(rts)
-{
- TCGv tmp;
-
- tmp = gen_load(s, OS_LONG, QREG_SP, 0);
- tcg_gen_addi_i32(QREG_SP, QREG_SP, 4);
- gen_jmp(s, tmp);
-}
-
-DISAS_INSN(jump)
-{
- TCGv tmp;
-
- /* Load the target address first to ensure correct exception
- behavior. */
- tmp = gen_lea(env, s, insn, OS_LONG);
- if (IS_NULL_QREG(tmp)) {
- gen_addr_fault(s);
- return;
- }
- if ((insn & 0x40) == 0) {
- /* jsr */
- gen_push(s, tcg_const_i32(s->pc));
- }
- gen_jmp(s, tmp);
-}
-
-DISAS_INSN(addsubq)
-{
- TCGv src;
- TCGv dest;
- TCGv val;
- int imm;
- TCGv addr;
- int opsize;
-
- if ((insn & 070) == 010) {
- /* Operation on address register is always long. */
- opsize = OS_LONG;
- } else {
- opsize = insn_opsize(insn);
- }
- SRC_EA(env, src, opsize, 1, &addr);
- imm = (insn >> 9) & 7;
- if (imm == 0) {
- imm = 8;
- }
- val = tcg_const_i32(imm);
- dest = tcg_temp_new();
- tcg_gen_mov_i32(dest, src);
- if ((insn & 0x38) == 0x08) {
- /* Don't update condition codes if the destination is an
- address register. */
- if (insn & 0x0100) {
- tcg_gen_sub_i32(dest, dest, val);
- } else {
- tcg_gen_add_i32(dest, dest, val);
- }
- } else {
- if (insn & 0x0100) {
- tcg_gen_setcond_i32(TCG_COND_LTU, QREG_CC_X, dest, val);
- tcg_gen_sub_i32(dest, dest, val);
- set_cc_op(s, CC_OP_SUBB + opsize);
- } else {
- tcg_gen_add_i32(dest, dest, val);
- tcg_gen_setcond_i32(TCG_COND_LTU, QREG_CC_X, dest, val);
- set_cc_op(s, CC_OP_ADDB + opsize);
- }
- gen_update_cc_add(dest, val, opsize);
- }
- DEST_EA(env, insn, opsize, dest, &addr);
-}
-
-DISAS_INSN(tpf)
-{
- switch (insn & 7) {
- case 2: /* One extension word. */
- s->pc += 2;
- break;
- case 3: /* Two extension words. */
- s->pc += 4;
- break;
- case 4: /* No extension words. */
- break;
- default:
- disas_undef(env, s, insn);
- }
-}
-
-DISAS_INSN(branch)
-{
- int32_t offset;
- uint32_t base;
- int op;
- TCGLabel *l1;
-
- base = s->pc;
- op = (insn >> 8) & 0xf;
- offset = (int8_t)insn;
- if (offset == 0) {
- offset = (int16_t)read_im16(env, s);
- } else if (offset == -1) {
- offset = read_im32(env, s);
- }
- if (op == 1) {
- /* bsr */
- gen_push(s, tcg_const_i32(s->pc));
- }
- if (op > 1) {
- /* Bcc */
- l1 = gen_new_label();
- gen_jmpcc(s, ((insn >> 8) & 0xf) ^ 1, l1);
- gen_jmp_tb(s, 1, base + offset);
- gen_set_label(l1);
- gen_jmp_tb(s, 0, s->pc);
- } else {
- /* Unconditional branch. */
- gen_jmp_tb(s, 0, base + offset);
- }
-}
-
-DISAS_INSN(moveq)
-{
- uint32_t val;
-
- val = (int8_t)insn;
- tcg_gen_movi_i32(DREG(insn, 9), val);
- gen_logic_cc(s, tcg_const_i32(val), OS_LONG);
-}
-
-DISAS_INSN(mvzs)
-{
- int opsize;
- TCGv src;
- TCGv reg;
-
- if (insn & 0x40)
- opsize = OS_WORD;
- else
- opsize = OS_BYTE;
- SRC_EA(env, src, opsize, (insn & 0x80) == 0, NULL);
- reg = DREG(insn, 9);
- tcg_gen_mov_i32(reg, src);
- gen_logic_cc(s, src, opsize);
-}
-
-DISAS_INSN(or)
-{
- TCGv reg;
- TCGv dest;
- TCGv src;
- TCGv addr;
- int opsize;
-
- opsize = insn_opsize(insn);
- reg = gen_extend(DREG(insn, 9), opsize, 0);
- dest = tcg_temp_new();
- if (insn & 0x100) {
- SRC_EA(env, src, opsize, 0, &addr);
- tcg_gen_or_i32(dest, src, reg);
- DEST_EA(env, insn, opsize, dest, &addr);
- } else {
- SRC_EA(env, src, opsize, 0, NULL);
- tcg_gen_or_i32(dest, src, reg);
- gen_partset_reg(opsize, DREG(insn, 9), dest);
- }
- gen_logic_cc(s, dest, opsize);
-}
-
-DISAS_INSN(suba)
-{
- TCGv src;
- TCGv reg;
-
- SRC_EA(env, src, (insn & 0x100) ? OS_LONG : OS_WORD, 1, NULL);
- reg = AREG(insn, 9);
- tcg_gen_sub_i32(reg, reg, src);
-}
-
-static inline void gen_subx(DisasContext *s, TCGv src, TCGv dest, int opsize)
-{
- TCGv tmp;
-
- gen_flush_flags(s); /* compute old Z */
-
- /* Perform substract with borrow.
- * (X, N) = dest - (src + X);
- */
-
- tmp = tcg_const_i32(0);
- tcg_gen_add2_i32(QREG_CC_N, QREG_CC_X, src, tmp, QREG_CC_X, tmp);
- tcg_gen_sub2_i32(QREG_CC_N, QREG_CC_X, dest, tmp, QREG_CC_N, QREG_CC_X);
- gen_ext(QREG_CC_N, QREG_CC_N, opsize, 1);
- tcg_gen_andi_i32(QREG_CC_X, QREG_CC_X, 1);
-
- /* Compute signed-overflow for substract. */
-
- tcg_gen_xor_i32(QREG_CC_V, QREG_CC_N, dest);
- tcg_gen_xor_i32(tmp, dest, src);
- tcg_gen_and_i32(QREG_CC_V, QREG_CC_V, tmp);
- tcg_temp_free(tmp);
-
- /* Copy the rest of the results into place. */
- tcg_gen_or_i32(QREG_CC_Z, QREG_CC_Z, QREG_CC_N); /* !Z is sticky */
- tcg_gen_mov_i32(QREG_CC_C, QREG_CC_X);
-
- set_cc_op(s, CC_OP_FLAGS);
-
- /* result is in QREG_CC_N */
-}
-
-DISAS_INSN(subx_reg)
-{
- TCGv dest;
- TCGv src;
- int opsize;
-
- opsize = insn_opsize(insn);
-
- src = gen_extend(DREG(insn, 0), opsize, 1);
- dest = gen_extend(DREG(insn, 9), opsize, 1);
-
- gen_subx(s, src, dest, opsize);
-
- gen_partset_reg(opsize, DREG(insn, 9), QREG_CC_N);
-}
-
-DISAS_INSN(subx_mem)
-{
- TCGv src;
- TCGv addr_src;
- TCGv dest;
- TCGv addr_dest;
- int opsize;
-
- opsize = insn_opsize(insn);
-
- addr_src = AREG(insn, 0);
- tcg_gen_subi_i32(addr_src, addr_src, opsize);
- src = gen_load(s, opsize, addr_src, 1);
-
- addr_dest = AREG(insn, 9);
- tcg_gen_subi_i32(addr_dest, addr_dest, opsize);
- dest = gen_load(s, opsize, addr_dest, 1);
-
- gen_subx(s, src, dest, opsize);
-
- gen_store(s, opsize, addr_dest, QREG_CC_N);
-}
-
-DISAS_INSN(mov3q)
-{
- TCGv src;
- int val;
-
- val = (insn >> 9) & 7;
- if (val == 0)
- val = -1;
- src = tcg_const_i32(val);
- gen_logic_cc(s, src, OS_LONG);
- DEST_EA(env, insn, OS_LONG, src, NULL);
-}
-
-DISAS_INSN(cmp)
-{
- TCGv src;
- TCGv reg;
- int opsize;
-
- opsize = insn_opsize(insn);
- SRC_EA(env, src, opsize, 1, NULL);
- reg = gen_extend(DREG(insn, 9), opsize, 1);
- gen_update_cc_cmp(s, reg, src, opsize);
-}
-
-DISAS_INSN(cmpa)
-{
- int opsize;
- TCGv src;
- TCGv reg;
-
- if (insn & 0x100) {
- opsize = OS_LONG;
- } else {
- opsize = OS_WORD;
- }
- SRC_EA(env, src, opsize, 1, NULL);
- reg = AREG(insn, 9);
- gen_update_cc_cmp(s, reg, src, OS_LONG);
-}
-
-DISAS_INSN(eor)
-{
- TCGv src;
- TCGv dest;
- TCGv addr;
- int opsize;
-
- opsize = insn_opsize(insn);
-
- SRC_EA(env, src, opsize, 0, &addr);
- dest = tcg_temp_new();
- tcg_gen_xor_i32(dest, src, DREG(insn, 9));
- gen_logic_cc(s, dest, opsize);
- DEST_EA(env, insn, opsize, dest, &addr);
-}
-
-static void do_exg(TCGv reg1, TCGv reg2)
-{
- TCGv temp = tcg_temp_new();
- tcg_gen_mov_i32(temp, reg1);
- tcg_gen_mov_i32(reg1, reg2);
- tcg_gen_mov_i32(reg2, temp);
- tcg_temp_free(temp);
-}
-
-DISAS_INSN(exg_dd)
-{
- /* exchange Dx and Dy */
- do_exg(DREG(insn, 9), DREG(insn, 0));
-}
-
-DISAS_INSN(exg_aa)
-{
- /* exchange Ax and Ay */
- do_exg(AREG(insn, 9), AREG(insn, 0));
-}
-
-DISAS_INSN(exg_da)
-{
- /* exchange Dx and Ay */
- do_exg(DREG(insn, 9), AREG(insn, 0));
-}
-
-DISAS_INSN(and)
-{
- TCGv src;
- TCGv reg;
- TCGv dest;
- TCGv addr;
- int opsize;
-
- dest = tcg_temp_new();
-
- opsize = insn_opsize(insn);
- reg = DREG(insn, 9);
- if (insn & 0x100) {
- SRC_EA(env, src, opsize, 0, &addr);
- tcg_gen_and_i32(dest, src, reg);
- DEST_EA(env, insn, opsize, dest, &addr);
- } else {
- SRC_EA(env, src, opsize, 0, NULL);
- tcg_gen_and_i32(dest, src, reg);
- gen_partset_reg(opsize, reg, dest);
- }
- tcg_temp_free(dest);
- gen_logic_cc(s, dest, opsize);
-}
-
-DISAS_INSN(adda)
-{
- TCGv src;
- TCGv reg;
-
- SRC_EA(env, src, (insn & 0x100) ? OS_LONG : OS_WORD, 1, NULL);
- reg = AREG(insn, 9);
- tcg_gen_add_i32(reg, reg, src);
-}
-
-static inline void gen_addx(DisasContext *s, TCGv src, TCGv dest, int opsize)
-{
- TCGv tmp;
-
- gen_flush_flags(s); /* compute old Z */
-
- /* Perform addition with carry.
- * (X, N) = src + dest + X;
- */
-
- tmp = tcg_const_i32(0);
- tcg_gen_add2_i32(QREG_CC_N, QREG_CC_X, QREG_CC_X, tmp, dest, tmp);
- tcg_gen_add2_i32(QREG_CC_N, QREG_CC_X, QREG_CC_N, QREG_CC_X, src, tmp);
- gen_ext(QREG_CC_N, QREG_CC_N, opsize, 1);
-
- /* Compute signed-overflow for addition. */
-
- tcg_gen_xor_i32(QREG_CC_V, QREG_CC_N, src);
- tcg_gen_xor_i32(tmp, dest, src);
- tcg_gen_andc_i32(QREG_CC_V, QREG_CC_V, tmp);
- tcg_temp_free(tmp);
-
- /* Copy the rest of the results into place. */
- tcg_gen_or_i32(QREG_CC_Z, QREG_CC_Z, QREG_CC_N); /* !Z is sticky */
- tcg_gen_mov_i32(QREG_CC_C, QREG_CC_X);
-
- set_cc_op(s, CC_OP_FLAGS);
-
- /* result is in QREG_CC_N */
-}
-
-DISAS_INSN(addx_reg)
-{
- TCGv dest;
- TCGv src;
- int opsize;
-
- opsize = insn_opsize(insn);
-
- dest = gen_extend(DREG(insn, 9), opsize, 1);
- src = gen_extend(DREG(insn, 0), opsize, 1);
-
- gen_addx(s, src, dest, opsize);
-
- gen_partset_reg(opsize, DREG(insn, 9), QREG_CC_N);
-}
-
-DISAS_INSN(addx_mem)
-{
- TCGv src;
- TCGv addr_src;
- TCGv dest;
- TCGv addr_dest;
- int opsize;
-
- opsize = insn_opsize(insn);
-
- addr_src = AREG(insn, 0);
- tcg_gen_subi_i32(addr_src, addr_src, opsize_bytes(opsize));
- src = gen_load(s, opsize, addr_src, 1);
-
- addr_dest = AREG(insn, 9);
- tcg_gen_subi_i32(addr_dest, addr_dest, opsize_bytes(opsize));
- dest = gen_load(s, opsize, addr_dest, 1);
-
- gen_addx(s, src, dest, opsize);
-
- gen_store(s, opsize, addr_dest, QREG_CC_N);
-}
-
-/* TODO: This could be implemented without helper functions. */
-DISAS_INSN(shift_im)
-{
- TCGv reg;
- int tmp;
- TCGv shift;
-
- set_cc_op(s, CC_OP_FLAGS);
-
- reg = DREG(insn, 0);
- tmp = (insn >> 9) & 7;
- if (tmp == 0)
- tmp = 8;
- shift = tcg_const_i32(tmp);
- /* No need to flush flags becuse we know we will set C flag. */
- if (insn & 0x100) {
- gen_helper_shl_cc(reg, cpu_env, reg, shift);
- } else {
- if (insn & 8) {
- gen_helper_shr_cc(reg, cpu_env, reg, shift);
- } else {
- gen_helper_sar_cc(reg, cpu_env, reg, shift);
- }
- }
-}
-
-DISAS_INSN(shift_reg)
-{
- TCGv reg;
- TCGv shift;
-
- reg = DREG(insn, 0);
- shift = DREG(insn, 9);
- if (insn & 0x100) {
- gen_helper_shl_cc(reg, cpu_env, reg, shift);
- } else {
- if (insn & 8) {
- gen_helper_shr_cc(reg, cpu_env, reg, shift);
- } else {
- gen_helper_sar_cc(reg, cpu_env, reg, shift);
- }
- }
- set_cc_op(s, CC_OP_FLAGS);
-}
-
-DISAS_INSN(ff1)
-{
- TCGv reg;
- reg = DREG(insn, 0);
- gen_logic_cc(s, reg, OS_LONG);
- gen_helper_ff1(reg, reg);
-}
-
-static TCGv gen_get_sr(DisasContext *s)
-{
- TCGv ccr;
- TCGv sr;
-
- ccr = gen_get_ccr(s);
- sr = tcg_temp_new();
- tcg_gen_andi_i32(sr, QREG_SR, 0xffe0);
- tcg_gen_or_i32(sr, sr, ccr);
- return sr;
-}
-
-DISAS_INSN(strldsr)
-{
- uint16_t ext;
- uint32_t addr;
-
- addr = s->pc - 2;
- ext = read_im16(env, s);
- if (ext != 0x46FC) {
- gen_exception(s, addr, EXCP_UNSUPPORTED);
- return;
- }
- ext = read_im16(env, s);
- if (IS_USER(s) || (ext & SR_S) == 0) {
- gen_exception(s, addr, EXCP_PRIVILEGE);
- return;
- }
- gen_push(s, gen_get_sr(s));
- gen_set_sr_im(s, ext, 0);
-}
-
-DISAS_INSN(move_from_sr)
-{
- TCGv sr;
-
- if (IS_USER(s) && !m68k_feature(env, M68K_FEATURE_M68000)) {
- gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
- return;
- }
- sr = gen_get_sr(s);
- DEST_EA(env, insn, OS_WORD, sr, NULL);
-}
-
-DISAS_INSN(move_to_sr)
-{
- if (IS_USER(s)) {
- gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
- return;
- }
- gen_set_sr(env, s, insn, 0);
- gen_lookup_tb(s);
-}
-
-DISAS_INSN(move_from_usp)
-{
- if (IS_USER(s)) {
- gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
- return;
- }
- tcg_gen_ld_i32(AREG(insn, 0), cpu_env,
- offsetof(CPUM68KState, sp[M68K_USP]));
-}
-
-DISAS_INSN(move_to_usp)
-{
- if (IS_USER(s)) {
- gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
- return;
- }
- tcg_gen_st_i32(AREG(insn, 0), cpu_env,
- offsetof(CPUM68KState, sp[M68K_USP]));
-}
-
-DISAS_INSN(halt)
-{
- gen_exception(s, s->pc, EXCP_HALT_INSN);
-}
-
-DISAS_INSN(stop)
-{
- uint16_t ext;
-
- if (IS_USER(s)) {
- gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
- return;
- }
-
- ext = read_im16(env, s);
-
- gen_set_sr_im(s, ext, 0);
- tcg_gen_movi_i32(cpu_halted, 1);
- gen_exception(s, s->pc, EXCP_HLT);
-}
-
-DISAS_INSN(rte)
-{
- if (IS_USER(s)) {
- gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
- return;
- }
- gen_exception(s, s->pc - 2, EXCP_RTE);
-}
-
-DISAS_INSN(movec)
-{
- uint16_t ext;
- TCGv reg;
-
- if (IS_USER(s)) {
- gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
- return;
- }
-
- ext = read_im16(env, s);
-
- if (ext & 0x8000) {
- reg = AREG(ext, 12);
- } else {
- reg = DREG(ext, 12);
- }
- gen_helper_movec(cpu_env, tcg_const_i32(ext & 0xfff), reg);
- gen_lookup_tb(s);
-}
-
-DISAS_INSN(intouch)
-{
- if (IS_USER(s)) {
- gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
- return;
- }
- /* ICache fetch. Implement as no-op. */
-}
-
-DISAS_INSN(cpushl)
-{
- if (IS_USER(s)) {
- gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
- return;
- }
- /* Cache push/invalidate. Implement as no-op. */
-}
-
-DISAS_INSN(wddata)
-{
- gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
-}
-
-DISAS_INSN(wdebug)
-{
- M68kCPU *cpu = m68k_env_get_cpu(env);
-
- if (IS_USER(s)) {
- gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
- return;
- }
- /* TODO: Implement wdebug. */
- cpu_abort(CPU(cpu), "WDEBUG not implemented");
-}
-
-DISAS_INSN(trap)
-{
- gen_exception(s, s->pc - 2, EXCP_TRAP0 + (insn & 0xf));
-}
-
-/* ??? FP exceptions are not implemented. Most exceptions are deferred until
- immediately before the next FP instruction is executed. */
-DISAS_INSN(fpu)
-{
- uint16_t ext;
- int32_t offset;
- int opmode;
- TCGv_i64 src;
- TCGv_i64 dest;
- TCGv_i64 res;
- TCGv tmp32;
- int round;
- int set_dest;
- int opsize;
-
- ext = read_im16(env, s);
- opmode = ext & 0x7f;
- switch ((ext >> 13) & 7) {
- case 0: case 2:
- break;
- case 1:
- goto undef;
- case 3: /* fmove out */
- src = FREG(ext, 7);
- tmp32 = tcg_temp_new_i32();
- /* fmove */
- /* ??? TODO: Proper behavior on overflow. */
- switch ((ext >> 10) & 7) {
- case 0:
- opsize = OS_LONG;
- gen_helper_f64_to_i32(tmp32, cpu_env, src);
- break;
- case 1:
- opsize = OS_SINGLE;
- gen_helper_f64_to_f32(tmp32, cpu_env, src);
- break;
- case 4:
- opsize = OS_WORD;
- gen_helper_f64_to_i32(tmp32, cpu_env, src);
- break;
- case 5: /* OS_DOUBLE */
- tcg_gen_mov_i32(tmp32, AREG(insn, 0));
- switch ((insn >> 3) & 7) {
- case 2:
- case 3:
- break;
- case 4:
- tcg_gen_addi_i32(tmp32, tmp32, -8);
- break;
- case 5:
- offset = cpu_ldsw_code(env, s->pc);
- s->pc += 2;
- tcg_gen_addi_i32(tmp32, tmp32, offset);
- break;
- default:
- goto undef;
- }
- gen_store64(s, tmp32, src);
- switch ((insn >> 3) & 7) {
- case 3:
- tcg_gen_addi_i32(tmp32, tmp32, 8);
- tcg_gen_mov_i32(AREG(insn, 0), tmp32);
- break;
- case 4:
- tcg_gen_mov_i32(AREG(insn, 0), tmp32);
- break;
- }
- tcg_temp_free_i32(tmp32);
- return;
- case 6:
- opsize = OS_BYTE;
- gen_helper_f64_to_i32(tmp32, cpu_env, src);
- break;
- default:
- goto undef;
- }
- DEST_EA(env, insn, opsize, tmp32, NULL);
- tcg_temp_free_i32(tmp32);
- return;
- case 4: /* fmove to control register. */
- switch ((ext >> 10) & 7) {
- case 4: /* FPCR */
- /* Not implemented. Ignore writes. */
- break;
- case 1: /* FPIAR */
- case 2: /* FPSR */
- default:
- cpu_abort(NULL, "Unimplemented: fmove to control %d",
- (ext >> 10) & 7);
- }
- break;
- case 5: /* fmove from control register. */
- switch ((ext >> 10) & 7) {
- case 4: /* FPCR */
- /* Not implemented. Always return zero. */
- tmp32 = tcg_const_i32(0);
- break;
- case 1: /* FPIAR */
- case 2: /* FPSR */
- default:
- cpu_abort(NULL, "Unimplemented: fmove from control %d",
- (ext >> 10) & 7);
- goto undef;
- }
- DEST_EA(env, insn, OS_LONG, tmp32, NULL);
- break;
- case 6: /* fmovem */
- case 7:
- {
- TCGv addr;
- uint16_t mask;
- int i;
- if ((ext & 0x1f00) != 0x1000 || (ext & 0xff) == 0)
- goto undef;
- tmp32 = gen_lea(env, s, insn, OS_LONG);
- if (IS_NULL_QREG(tmp32)) {
- gen_addr_fault(s);
- return;
- }
- addr = tcg_temp_new_i32();
- tcg_gen_mov_i32(addr, tmp32);
- mask = 0x80;
- for (i = 0; i < 8; i++) {
- if (ext & mask) {
- dest = FREG(i, 0);
- if (ext & (1 << 13)) {
- /* store */
- tcg_gen_qemu_stf64(dest, addr, IS_USER(s));
- } else {
- /* load */
- tcg_gen_qemu_ldf64(dest, addr, IS_USER(s));
- }
- if (ext & (mask - 1))
- tcg_gen_addi_i32(addr, addr, 8);
- }
- mask >>= 1;
- }
- tcg_temp_free_i32(addr);
- }
- return;
- }
- if (ext & (1 << 14)) {
- /* Source effective address. */
- switch ((ext >> 10) & 7) {
- case 0: opsize = OS_LONG; break;
- case 1: opsize = OS_SINGLE; break;
- case 4: opsize = OS_WORD; break;
- case 5: opsize = OS_DOUBLE; break;
- case 6: opsize = OS_BYTE; break;
- default:
- goto undef;
- }
- if (opsize == OS_DOUBLE) {
- tmp32 = tcg_temp_new_i32();
- tcg_gen_mov_i32(tmp32, AREG(insn, 0));
- switch ((insn >> 3) & 7) {
- case 2:
- case 3:
- break;
- case 4:
- tcg_gen_addi_i32(tmp32, tmp32, -8);
- break;
- case 5:
- offset = cpu_ldsw_code(env, s->pc);
- s->pc += 2;
- tcg_gen_addi_i32(tmp32, tmp32, offset);
- break;
- case 7:
- offset = cpu_ldsw_code(env, s->pc);
- offset += s->pc - 2;
- s->pc += 2;
- tcg_gen_addi_i32(tmp32, tmp32, offset);
- break;
- default:
- goto undef;
- }
- src = gen_load64(s, tmp32);
- switch ((insn >> 3) & 7) {
- case 3:
- tcg_gen_addi_i32(tmp32, tmp32, 8);
- tcg_gen_mov_i32(AREG(insn, 0), tmp32);
- break;
- case 4:
- tcg_gen_mov_i32(AREG(insn, 0), tmp32);
- break;
- }
- tcg_temp_free_i32(tmp32);
- } else {
- SRC_EA(env, tmp32, opsize, 1, NULL);
- src = tcg_temp_new_i64();
- switch (opsize) {
- case OS_LONG:
- case OS_WORD:
- case OS_BYTE:
- gen_helper_i32_to_f64(src, cpu_env, tmp32);
- break;
- case OS_SINGLE:
- gen_helper_f32_to_f64(src, cpu_env, tmp32);
- break;
- }
- }
- } else {
- /* Source register. */
- src = FREG(ext, 10);
- }
- dest = FREG(ext, 7);
- res = tcg_temp_new_i64();
- if (opmode != 0x3a)
- tcg_gen_mov_f64(res, dest);
- round = 1;
- set_dest = 1;
- switch (opmode) {
- case 0: case 0x40: case 0x44: /* fmove */
- tcg_gen_mov_f64(res, src);
- break;
- case 1: /* fint */
- gen_helper_iround_f64(res, cpu_env, src);
- round = 0;
- break;
- case 3: /* fintrz */
- gen_helper_itrunc_f64(res, cpu_env, src);
- round = 0;
- break;
- case 4: case 0x41: case 0x45: /* fsqrt */
- gen_helper_sqrt_f64(res, cpu_env, src);
- break;
- case 0x18: case 0x58: case 0x5c: /* fabs */
- gen_helper_abs_f64(res, src);
- break;
- case 0x1a: case 0x5a: case 0x5e: /* fneg */
- gen_helper_chs_f64(res, src);
- break;
- case 0x20: case 0x60: case 0x64: /* fdiv */
- gen_helper_div_f64(res, cpu_env, res, src);
- break;
- case 0x22: case 0x62: case 0x66: /* fadd */
- gen_helper_add_f64(res, cpu_env, res, src);
- break;
- case 0x23: case 0x63: case 0x67: /* fmul */
- gen_helper_mul_f64(res, cpu_env, res, src);
- break;
- case 0x28: case 0x68: case 0x6c: /* fsub */
- gen_helper_sub_f64(res, cpu_env, res, src);
- break;
- case 0x38: /* fcmp */
- gen_helper_sub_cmp_f64(res, cpu_env, res, src);
- set_dest = 0;
- round = 0;
- break;
- case 0x3a: /* ftst */
- tcg_gen_mov_f64(res, src);
- set_dest = 0;
- round = 0;
- break;
- default:
- goto undef;
- }
- if (ext & (1 << 14)) {
- tcg_temp_free_i64(src);
- }
- if (round) {
- if (opmode & 0x40) {
- if ((opmode & 0x4) != 0)
- round = 0;
- } else if ((s->fpcr & M68K_FPCR_PREC) == 0) {
- round = 0;
- }
- }
- if (round) {
- TCGv tmp = tcg_temp_new_i32();
- gen_helper_f64_to_f32(tmp, cpu_env, res);
- gen_helper_f32_to_f64(res, cpu_env, tmp);
- tcg_temp_free_i32(tmp);
- }
- tcg_gen_mov_f64(QREG_FP_RESULT, res);
- if (set_dest) {
- tcg_gen_mov_f64(dest, res);
- }
- tcg_temp_free_i64(res);
- return;
-undef:
- /* FIXME: Is this right for offset addressing modes? */
- s->pc -= 2;
- disas_undef_fpu(env, s, insn);
-}
-
-DISAS_INSN(fbcc)
-{
- uint32_t offset;
- uint32_t addr;
- TCGv flag;
- TCGLabel *l1;
-
- addr = s->pc;
- offset = cpu_ldsw_code(env, s->pc);
- s->pc += 2;
- if (insn & (1 << 6)) {
- offset = (offset << 16) | read_im16(env, s);
- }
-
- l1 = gen_new_label();
- /* TODO: Raise BSUN exception. */
- flag = tcg_temp_new();
- gen_helper_compare_f64(flag, cpu_env, QREG_FP_RESULT);
- /* Jump to l1 if condition is true. */
- switch (insn & 0xf) {
- case 0: /* f */
- break;
- case 1: /* eq (=0) */
- tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(0), l1);
- break;
- case 2: /* ogt (=1) */
- tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(1), l1);
- break;
- case 3: /* oge (=0 or =1) */
- tcg_gen_brcond_i32(TCG_COND_LEU, flag, tcg_const_i32(1), l1);
- break;
- case 4: /* olt (=-1) */
- tcg_gen_brcond_i32(TCG_COND_LT, flag, tcg_const_i32(0), l1);
- break;
- case 5: /* ole (=-1 or =0) */
- tcg_gen_brcond_i32(TCG_COND_LE, flag, tcg_const_i32(0), l1);
- break;
- case 6: /* ogl (=-1 or =1) */
- tcg_gen_andi_i32(flag, flag, 1);
- tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(0), l1);
- break;
- case 7: /* or (=2) */
- tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(2), l1);
- break;
- case 8: /* un (<2) */
- tcg_gen_brcond_i32(TCG_COND_LT, flag, tcg_const_i32(2), l1);
- break;
- case 9: /* ueq (=0 or =2) */
- tcg_gen_andi_i32(flag, flag, 1);
- tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(0), l1);
- break;
- case 10: /* ugt (>0) */
- tcg_gen_brcond_i32(TCG_COND_GT, flag, tcg_const_i32(0), l1);
- break;
- case 11: /* uge (>=0) */
- tcg_gen_brcond_i32(TCG_COND_GE, flag, tcg_const_i32(0), l1);
- break;
- case 12: /* ult (=-1 or =2) */
- tcg_gen_brcond_i32(TCG_COND_GEU, flag, tcg_const_i32(2), l1);
- break;
- case 13: /* ule (!=1) */
- tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(1), l1);
- break;
- case 14: /* ne (!=0) */
- tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(0), l1);
- break;
- case 15: /* t */
- tcg_gen_br(l1);
- break;
- }
- gen_jmp_tb(s, 0, s->pc);
- gen_set_label(l1);
- gen_jmp_tb(s, 1, addr + offset);
-}
-
-DISAS_INSN(frestore)
-{
- M68kCPU *cpu = m68k_env_get_cpu(env);
-
- /* TODO: Implement frestore. */
- cpu_abort(CPU(cpu), "FRESTORE not implemented");
-}
-
-DISAS_INSN(fsave)
-{
- M68kCPU *cpu = m68k_env_get_cpu(env);
-
- /* TODO: Implement fsave. */
- cpu_abort(CPU(cpu), "FSAVE not implemented");
-}
-
-static inline TCGv gen_mac_extract_word(DisasContext *s, TCGv val, int upper)
-{
- TCGv tmp = tcg_temp_new();
- if (s->env->macsr & MACSR_FI) {
- if (upper)
- tcg_gen_andi_i32(tmp, val, 0xffff0000);
- else
- tcg_gen_shli_i32(tmp, val, 16);
- } else if (s->env->macsr & MACSR_SU) {
- if (upper)
- tcg_gen_sari_i32(tmp, val, 16);
- else
- tcg_gen_ext16s_i32(tmp, val);
- } else {
- if (upper)
- tcg_gen_shri_i32(tmp, val, 16);
- else
- tcg_gen_ext16u_i32(tmp, val);
- }
- return tmp;
-}
-
-static void gen_mac_clear_flags(void)
-{
- tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR,
- ~(MACSR_V | MACSR_Z | MACSR_N | MACSR_EV));
-}
-
-DISAS_INSN(mac)
-{
- TCGv rx;
- TCGv ry;
- uint16_t ext;
- int acc;
- TCGv tmp;
- TCGv addr;
- TCGv loadval;
- int dual;
- TCGv saved_flags;
-
- if (!s->done_mac) {
- s->mactmp = tcg_temp_new_i64();
- s->done_mac = 1;
- }
-
- ext = read_im16(env, s);
-
- acc = ((insn >> 7) & 1) | ((ext >> 3) & 2);
- dual = ((insn & 0x30) != 0 && (ext & 3) != 0);
- if (dual && !m68k_feature(s->env, M68K_FEATURE_CF_EMAC_B)) {
- disas_undef(env, s, insn);
- return;
- }
- if (insn & 0x30) {
- /* MAC with load. */
- tmp = gen_lea(env, s, insn, OS_LONG);
- addr = tcg_temp_new();
- tcg_gen_and_i32(addr, tmp, QREG_MAC_MASK);
- /* Load the value now to ensure correct exception behavior.
- Perform writeback after reading the MAC inputs. */
- loadval = gen_load(s, OS_LONG, addr, 0);
-
- acc ^= 1;
- rx = (ext & 0x8000) ? AREG(ext, 12) : DREG(insn, 12);
- ry = (ext & 8) ? AREG(ext, 0) : DREG(ext, 0);
- } else {
- loadval = addr = NULL_QREG;
- rx = (insn & 0x40) ? AREG(insn, 9) : DREG(insn, 9);
- ry = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
- }
-
- gen_mac_clear_flags();
-#if 0
- l1 = -1;
- /* Disabled because conditional branches clobber temporary vars. */
- if ((s->env->macsr & MACSR_OMC) != 0 && !dual) {
- /* Skip the multiply if we know we will ignore it. */
- l1 = gen_new_label();
- tmp = tcg_temp_new();
- tcg_gen_andi_i32(tmp, QREG_MACSR, 1 << (acc + 8));
- gen_op_jmp_nz32(tmp, l1);
- }
-#endif
-
- if ((ext & 0x0800) == 0) {
- /* Word. */
- rx = gen_mac_extract_word(s, rx, (ext & 0x80) != 0);
- ry = gen_mac_extract_word(s, ry, (ext & 0x40) != 0);
- }
- if (s->env->macsr & MACSR_FI) {
- gen_helper_macmulf(s->mactmp, cpu_env, rx, ry);
- } else {
- if (s->env->macsr & MACSR_SU)
- gen_helper_macmuls(s->mactmp, cpu_env, rx, ry);
- else
- gen_helper_macmulu(s->mactmp, cpu_env, rx, ry);
- switch ((ext >> 9) & 3) {
- case 1:
- tcg_gen_shli_i64(s->mactmp, s->mactmp, 1);
- break;
- case 3:
- tcg_gen_shri_i64(s->mactmp, s->mactmp, 1);
- break;
- }
- }
-
- if (dual) {
- /* Save the overflow flag from the multiply. */
- saved_flags = tcg_temp_new();
- tcg_gen_mov_i32(saved_flags, QREG_MACSR);
- } else {
- saved_flags = NULL_QREG;
- }
-
-#if 0
- /* Disabled because conditional branches clobber temporary vars. */
- if ((s->env->macsr & MACSR_OMC) != 0 && dual) {
- /* Skip the accumulate if the value is already saturated. */
- l1 = gen_new_label();
- tmp = tcg_temp_new();
- gen_op_and32(tmp, QREG_MACSR, tcg_const_i32(MACSR_PAV0 << acc));
- gen_op_jmp_nz32(tmp, l1);
- }
-#endif
-
- if (insn & 0x100)
- tcg_gen_sub_i64(MACREG(acc), MACREG(acc), s->mactmp);
- else
- tcg_gen_add_i64(MACREG(acc), MACREG(acc), s->mactmp);
-
- if (s->env->macsr & MACSR_FI)
- gen_helper_macsatf(cpu_env, tcg_const_i32(acc));
- else if (s->env->macsr & MACSR_SU)
- gen_helper_macsats(cpu_env, tcg_const_i32(acc));
- else
- gen_helper_macsatu(cpu_env, tcg_const_i32(acc));
-
-#if 0
- /* Disabled because conditional branches clobber temporary vars. */
- if (l1 != -1)
- gen_set_label(l1);
-#endif
-
- if (dual) {
- /* Dual accumulate variant. */
- acc = (ext >> 2) & 3;
- /* Restore the overflow flag from the multiplier. */
- tcg_gen_mov_i32(QREG_MACSR, saved_flags);
-#if 0
- /* Disabled because conditional branches clobber temporary vars. */
- if ((s->env->macsr & MACSR_OMC) != 0) {
- /* Skip the accumulate if the value is already saturated. */
- l1 = gen_new_label();
- tmp = tcg_temp_new();
- gen_op_and32(tmp, QREG_MACSR, tcg_const_i32(MACSR_PAV0 << acc));
- gen_op_jmp_nz32(tmp, l1);
- }
-#endif
- if (ext & 2)
- tcg_gen_sub_i64(MACREG(acc), MACREG(acc), s->mactmp);
- else
- tcg_gen_add_i64(MACREG(acc), MACREG(acc), s->mactmp);
- if (s->env->macsr & MACSR_FI)
- gen_helper_macsatf(cpu_env, tcg_const_i32(acc));
- else if (s->env->macsr & MACSR_SU)
- gen_helper_macsats(cpu_env, tcg_const_i32(acc));
- else
- gen_helper_macsatu(cpu_env, tcg_const_i32(acc));
-#if 0
- /* Disabled because conditional branches clobber temporary vars. */
- if (l1 != -1)
- gen_set_label(l1);
-#endif
- }
- gen_helper_mac_set_flags(cpu_env, tcg_const_i32(acc));
-
- if (insn & 0x30) {
- TCGv rw;
- rw = (insn & 0x40) ? AREG(insn, 9) : DREG(insn, 9);
- tcg_gen_mov_i32(rw, loadval);
- /* FIXME: Should address writeback happen with the masked or
- unmasked value? */
- switch ((insn >> 3) & 7) {
- case 3: /* Post-increment. */
- tcg_gen_addi_i32(AREG(insn, 0), addr, 4);
- break;
- case 4: /* Pre-decrement. */
- tcg_gen_mov_i32(AREG(insn, 0), addr);
- }
- }
-}
-
-DISAS_INSN(from_mac)
-{
- TCGv rx;
- TCGv_i64 acc;
- int accnum;
-
- rx = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
- accnum = (insn >> 9) & 3;
- acc = MACREG(accnum);
- if (s->env->macsr & MACSR_FI) {
- gen_helper_get_macf(rx, cpu_env, acc);
- } else if ((s->env->macsr & MACSR_OMC) == 0) {
- tcg_gen_extrl_i64_i32(rx, acc);
- } else if (s->env->macsr & MACSR_SU) {
- gen_helper_get_macs(rx, acc);
- } else {
- gen_helper_get_macu(rx, acc);
- }
- if (insn & 0x40) {
- tcg_gen_movi_i64(acc, 0);
- tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR, ~(MACSR_PAV0 << accnum));
- }
-}
-
-DISAS_INSN(move_mac)
-{
- /* FIXME: This can be done without a helper. */
- int src;
- TCGv dest;
- src = insn & 3;
- dest = tcg_const_i32((insn >> 9) & 3);
- gen_helper_mac_move(cpu_env, dest, tcg_const_i32(src));
- gen_mac_clear_flags();
- gen_helper_mac_set_flags(cpu_env, dest);
-}
-
-DISAS_INSN(from_macsr)
-{
- TCGv reg;
-
- reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
- tcg_gen_mov_i32(reg, QREG_MACSR);
-}
-
-DISAS_INSN(from_mask)
-{
- TCGv reg;
- reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
- tcg_gen_mov_i32(reg, QREG_MAC_MASK);
-}
-
-DISAS_INSN(from_mext)
-{
- TCGv reg;
- TCGv acc;
- reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
- acc = tcg_const_i32((insn & 0x400) ? 2 : 0);
- if (s->env->macsr & MACSR_FI)
- gen_helper_get_mac_extf(reg, cpu_env, acc);
- else
- gen_helper_get_mac_exti(reg, cpu_env, acc);
-}
-
-DISAS_INSN(macsr_to_ccr)
-{
- TCGv tmp = tcg_temp_new();
- tcg_gen_andi_i32(tmp, QREG_MACSR, 0xf);
- gen_helper_set_sr(cpu_env, tmp);
- tcg_temp_free(tmp);
- set_cc_op(s, CC_OP_FLAGS);
-}
-
-DISAS_INSN(to_mac)
-{
- TCGv_i64 acc;
- TCGv val;
- int accnum;
- accnum = (insn >> 9) & 3;
- acc = MACREG(accnum);
- SRC_EA(env, val, OS_LONG, 0, NULL);
- if (s->env->macsr & MACSR_FI) {
- tcg_gen_ext_i32_i64(acc, val);
- tcg_gen_shli_i64(acc, acc, 8);
- } else if (s->env->macsr & MACSR_SU) {
- tcg_gen_ext_i32_i64(acc, val);
- } else {
- tcg_gen_extu_i32_i64(acc, val);
- }
- tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR, ~(MACSR_PAV0 << accnum));
- gen_mac_clear_flags();
- gen_helper_mac_set_flags(cpu_env, tcg_const_i32(accnum));
-}
-
-DISAS_INSN(to_macsr)
-{
- TCGv val;
- SRC_EA(env, val, OS_LONG, 0, NULL);
- gen_helper_set_macsr(cpu_env, val);
- gen_lookup_tb(s);
-}
-
-DISAS_INSN(to_mask)
-{
- TCGv val;
- SRC_EA(env, val, OS_LONG, 0, NULL);
- tcg_gen_ori_i32(QREG_MAC_MASK, val, 0xffff0000);
-}
-
-DISAS_INSN(to_mext)
-{
- TCGv val;
- TCGv acc;
- SRC_EA(env, val, OS_LONG, 0, NULL);
- acc = tcg_const_i32((insn & 0x400) ? 2 : 0);
- if (s->env->macsr & MACSR_FI)
- gen_helper_set_mac_extf(cpu_env, val, acc);
- else if (s->env->macsr & MACSR_SU)
- gen_helper_set_mac_exts(cpu_env, val, acc);
- else
- gen_helper_set_mac_extu(cpu_env, val, acc);
-}
-
-static disas_proc opcode_table[65536];
-
-static void
-register_opcode (disas_proc proc, uint16_t opcode, uint16_t mask)
-{
- int i;
- int from;
- int to;
-
- /* Sanity check. All set bits must be included in the mask. */
- if (opcode & ~mask) {
- fprintf(stderr,
- "qemu internal error: bogus opcode definition %04x/%04x\n",
- opcode, mask);
- abort();
- }
- /* This could probably be cleverer. For now just optimize the case where
- the top bits are known. */
- /* Find the first zero bit in the mask. */
- i = 0x8000;
- while ((i & mask) != 0)
- i >>= 1;
- /* Iterate over all combinations of this and lower bits. */
- if (i == 0)
- i = 1;
- else
- i <<= 1;
- from = opcode & ~(i - 1);
- to = from + i;
- for (i = from; i < to; i++) {
- if ((i & mask) == opcode)
- opcode_table[i] = proc;
- }
-}
-
-/* Register m68k opcode handlers. Order is important.
- Later insn override earlier ones. */
-void register_m68k_insns (CPUM68KState *env)
-{
- /* Build the opcode table only once to avoid
- multithreading issues. */
- if (opcode_table[0] != NULL) {
- return;
- }
-
- /* use BASE() for instruction available
- * for CF_ISA_A and M68000.
- */
-#define BASE(name, opcode, mask) \
- register_opcode(disas_##name, 0x##opcode, 0x##mask)
-#define INSN(name, opcode, mask, feature) do { \
- if (m68k_feature(env, M68K_FEATURE_##feature)) \
- BASE(name, opcode, mask); \
- } while(0)
- BASE(undef, 0000, 0000);
- INSN(arith_im, 0080, fff8, CF_ISA_A);
- INSN(arith_im, 0000, ff00, M68000);
- INSN(undef, 00c0, ffc0, M68000);
- INSN(bitrev, 00c0, fff8, CF_ISA_APLUSC);
- BASE(bitop_reg, 0100, f1c0);
- BASE(bitop_reg, 0140, f1c0);
- BASE(bitop_reg, 0180, f1c0);
- BASE(bitop_reg, 01c0, f1c0);
- INSN(arith_im, 0280, fff8, CF_ISA_A);
- INSN(arith_im, 0200, ff00, M68000);
- INSN(undef, 02c0, ffc0, M68000);
- INSN(byterev, 02c0, fff8, CF_ISA_APLUSC);
- INSN(arith_im, 0480, fff8, CF_ISA_A);
- INSN(arith_im, 0400, ff00, M68000);
- INSN(undef, 04c0, ffc0, M68000);
- INSN(arith_im, 0600, ff00, M68000);
- INSN(undef, 06c0, ffc0, M68000);
- INSN(ff1, 04c0, fff8, CF_ISA_APLUSC);
- INSN(arith_im, 0680, fff8, CF_ISA_A);
- INSN(arith_im, 0c00, ff38, CF_ISA_A);
- INSN(arith_im, 0c00, ff00, M68000);
- BASE(bitop_im, 0800, ffc0);
- BASE(bitop_im, 0840, ffc0);
- BASE(bitop_im, 0880, ffc0);
- BASE(bitop_im, 08c0, ffc0);
- INSN(arith_im, 0a80, fff8, CF_ISA_A);
- INSN(arith_im, 0a00, ff00, M68000);
- BASE(move, 1000, f000);
- BASE(move, 2000, f000);
- BASE(move, 3000, f000);
- INSN(strldsr, 40e7, ffff, CF_ISA_APLUSC);
- INSN(negx, 4080, fff8, CF_ISA_A);
- INSN(negx, 4000, ff00, M68000);
- INSN(undef, 40c0, ffc0, M68000);
- INSN(move_from_sr, 40c0, fff8, CF_ISA_A);
- INSN(move_from_sr, 40c0, ffc0, M68000);
- BASE(lea, 41c0, f1c0);
- BASE(clr, 4200, ff00);
- BASE(undef, 42c0, ffc0);
- INSN(move_from_ccr, 42c0, fff8, CF_ISA_A);
- INSN(move_from_ccr, 42c0, ffc0, M68000);
- INSN(neg, 4480, fff8, CF_ISA_A);
- INSN(neg, 4400, ff00, M68000);
- INSN(undef, 44c0, ffc0, M68000);
- BASE(move_to_ccr, 44c0, ffc0);
- INSN(not, 4680, fff8, CF_ISA_A);
- INSN(not, 4600, ff00, M68000);
- INSN(undef, 46c0, ffc0, M68000);
- INSN(move_to_sr, 46c0, ffc0, CF_ISA_A);
- INSN(linkl, 4808, fff8, M68000);
- BASE(pea, 4840, ffc0);
- BASE(swap, 4840, fff8);
- INSN(bkpt, 4848, fff8, BKPT);
- BASE(movem, 48c0, fbc0);
- BASE(ext, 4880, fff8);
- BASE(ext, 48c0, fff8);
- BASE(ext, 49c0, fff8);
- BASE(tst, 4a00, ff00);
- INSN(tas, 4ac0, ffc0, CF_ISA_B);
- INSN(tas, 4ac0, ffc0, M68000);
- INSN(halt, 4ac8, ffff, CF_ISA_A);
- INSN(pulse, 4acc, ffff, CF_ISA_A);
- BASE(illegal, 4afc, ffff);
- INSN(mull, 4c00, ffc0, CF_ISA_A);
- INSN(mull, 4c00, ffc0, LONG_MULDIV);
- INSN(divl, 4c40, ffc0, CF_ISA_A);
- INSN(divl, 4c40, ffc0, LONG_MULDIV);
- INSN(sats, 4c80, fff8, CF_ISA_B);
- BASE(trap, 4e40, fff0);
- BASE(link, 4e50, fff8);
- BASE(unlk, 4e58, fff8);
- INSN(move_to_usp, 4e60, fff8, USP);
- INSN(move_from_usp, 4e68, fff8, USP);
- BASE(nop, 4e71, ffff);
- BASE(stop, 4e72, ffff);
- BASE(rte, 4e73, ffff);
- BASE(rts, 4e75, ffff);
- INSN(movec, 4e7b, ffff, CF_ISA_A);
- BASE(jump, 4e80, ffc0);
- BASE(jump, 4ec0, ffc0);
- INSN(addsubq, 5000, f080, M68000);
- BASE(addsubq, 5080, f0c0);
- INSN(scc, 50c0, f0f8, CF_ISA_A); /* Scc.B Dx */
- INSN(scc, 50c0, f0c0, M68000); /* Scc.B <EA> */
- INSN(dbcc, 50c8, f0f8, M68000);
- INSN(tpf, 51f8, fff8, CF_ISA_A);
-
- /* Branch instructions. */
- BASE(branch, 6000, f000);
- /* Disable long branch instructions, then add back the ones we want. */
- BASE(undef, 60ff, f0ff); /* All long branches. */
- INSN(branch, 60ff, f0ff, CF_ISA_B);
- INSN(undef, 60ff, ffff, CF_ISA_B); /* bra.l */
- INSN(branch, 60ff, ffff, BRAL);
- INSN(branch, 60ff, f0ff, BCCL);
-
- BASE(moveq, 7000, f100);
- INSN(mvzs, 7100, f100, CF_ISA_B);
- BASE(or, 8000, f000);
- BASE(divw, 80c0, f0c0);
- BASE(addsub, 9000, f000);
- INSN(undef, 90c0, f0c0, CF_ISA_A);
- INSN(subx_reg, 9180, f1f8, CF_ISA_A);
- INSN(subx_reg, 9100, f138, M68000);
- INSN(subx_mem, 9108, f138, M68000);
- INSN(suba, 91c0, f1c0, CF_ISA_A);
- INSN(suba, 90c0, f0c0, M68000);
-
- BASE(undef_mac, a000, f000);
- INSN(mac, a000, f100, CF_EMAC);
- INSN(from_mac, a180, f9b0, CF_EMAC);
- INSN(move_mac, a110, f9fc, CF_EMAC);
- INSN(from_macsr,a980, f9f0, CF_EMAC);
- INSN(from_mask, ad80, fff0, CF_EMAC);
- INSN(from_mext, ab80, fbf0, CF_EMAC);
- INSN(macsr_to_ccr, a9c0, ffff, CF_EMAC);
- INSN(to_mac, a100, f9c0, CF_EMAC);
- INSN(to_macsr, a900, ffc0, CF_EMAC);
- INSN(to_mext, ab00, fbc0, CF_EMAC);
- INSN(to_mask, ad00, ffc0, CF_EMAC);
-
- INSN(mov3q, a140, f1c0, CF_ISA_B);
- INSN(cmp, b000, f1c0, CF_ISA_B); /* cmp.b */
- INSN(cmp, b040, f1c0, CF_ISA_B); /* cmp.w */
- INSN(cmpa, b0c0, f1c0, CF_ISA_B); /* cmpa.w */
- INSN(cmp, b080, f1c0, CF_ISA_A);
- INSN(cmpa, b1c0, f1c0, CF_ISA_A);
- INSN(cmp, b000, f100, M68000);
- INSN(eor, b100, f100, M68000);
- INSN(cmpa, b0c0, f0c0, M68000);
- INSN(eor, b180, f1c0, CF_ISA_A);
- BASE(and, c000, f000);
- INSN(exg_dd, c140, f1f8, M68000);
- INSN(exg_aa, c148, f1f8, M68000);
- INSN(exg_da, c188, f1f8, M68000);
- BASE(mulw, c0c0, f0c0);
- BASE(addsub, d000, f000);
- INSN(undef, d0c0, f0c0, CF_ISA_A);
- INSN(addx_reg, d180, f1f8, CF_ISA_A);
- INSN(addx_reg, d100, f138, M68000);
- INSN(addx_mem, d108, f138, M68000);
- INSN(adda, d1c0, f1c0, CF_ISA_A);
- INSN(adda, d0c0, f0c0, M68000);
- INSN(shift_im, e080, f0f0, CF_ISA_A);
- INSN(shift_reg, e0a0, f0f0, CF_ISA_A);
- INSN(undef_fpu, f000, f000, CF_ISA_A);
- INSN(fpu, f200, ffc0, CF_FPU);
- INSN(fbcc, f280, ffc0, CF_FPU);
- INSN(frestore, f340, ffc0, CF_FPU);
- INSN(fsave, f340, ffc0, CF_FPU);
- INSN(intouch, f340, ffc0, CF_ISA_A);
- INSN(cpushl, f428, ff38, CF_ISA_A);
- INSN(wddata, fb00, ff00, CF_ISA_A);
- INSN(wdebug, fbc0, ffc0, CF_ISA_A);
-#undef INSN
-}
-
-/* ??? Some of this implementation is not exception safe. We should always
- write back the result to memory before setting the condition codes. */
-static void disas_m68k_insn(CPUM68KState * env, DisasContext *s)
-{
- uint16_t insn;
-
- insn = read_im16(env, s);
-
- opcode_table[insn](env, s, insn);
-}
-
-/* generate intermediate code for basic block 'tb'. */
-void gen_intermediate_code(CPUM68KState *env, TranslationBlock *tb)
-{
- M68kCPU *cpu = m68k_env_get_cpu(env);
- CPUState *cs = CPU(cpu);
- DisasContext dc1, *dc = &dc1;
- target_ulong pc_start;
- int pc_offset;
- int num_insns;
- int max_insns;
-
- /* generate intermediate code */
- pc_start = tb->pc;
-
- dc->tb = tb;
-
- dc->env = env;
- dc->is_jmp = DISAS_NEXT;
- dc->pc = pc_start;
- dc->cc_op = CC_OP_DYNAMIC;
- dc->cc_op_synced = 1;
- dc->singlestep_enabled = cs->singlestep_enabled;
- dc->fpcr = env->fpcr;
- dc->user = (env->sr & SR_S) == 0;
- dc->done_mac = 0;
- num_insns = 0;
- max_insns = tb->cflags & CF_COUNT_MASK;
- if (max_insns == 0) {
- max_insns = CF_COUNT_MASK;
- }
- if (max_insns > TCG_MAX_INSNS) {
- max_insns = TCG_MAX_INSNS;
- }
-
- gen_tb_start(tb);
- do {
- pc_offset = dc->pc - pc_start;
- gen_throws_exception = NULL;
- tcg_gen_insn_start(dc->pc, dc->cc_op);
- num_insns++;
-
- if (unlikely(cpu_breakpoint_test(cs, dc->pc, BP_ANY))) {
- gen_exception(dc, dc->pc, EXCP_DEBUG);
- dc->is_jmp = DISAS_JUMP;
- /* The address covered by the breakpoint must be included in
- [tb->pc, tb->pc + tb->size) in order to for it to be
- properly cleared -- thus we increment the PC here so that
- the logic setting tb->size below does the right thing. */
- dc->pc += 2;
- break;
- }
-
- if (num_insns == max_insns && (tb->cflags & CF_LAST_IO)) {
- gen_io_start();
- }
-
- dc->insn_pc = dc->pc;
- disas_m68k_insn(env, dc);
- } while (!dc->is_jmp && !tcg_op_buf_full() &&
- !cs->singlestep_enabled &&
- !singlestep &&
- (pc_offset) < (TARGET_PAGE_SIZE - 32) &&
- num_insns < max_insns);
-
- if (tb->cflags & CF_LAST_IO)
- gen_io_end();
- if (unlikely(cs->singlestep_enabled)) {
- /* Make sure the pc is updated, and raise a debug exception. */
- if (!dc->is_jmp) {
- update_cc_op(dc);
- tcg_gen_movi_i32(QREG_PC, dc->pc);
- }
- gen_helper_raise_exception(cpu_env, tcg_const_i32(EXCP_DEBUG));
- } else {
- switch(dc->is_jmp) {
- case DISAS_NEXT:
- update_cc_op(dc);
- gen_jmp_tb(dc, 0, dc->pc);
- break;
- default:
- case DISAS_JUMP:
- case DISAS_UPDATE:
- update_cc_op(dc);
- /* indicate that the hash table must be used to find the next TB */
- tcg_gen_exit_tb(0);
- break;
- case DISAS_TB_JUMP:
- /* nothing more to generate */
- break;
- }
- }
- gen_tb_end(tb, num_insns);
-
-#ifdef DEBUG_DISAS
- if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
- && qemu_log_in_addr_range(pc_start)) {
- qemu_log_lock();
- qemu_log("----------------\n");
- qemu_log("IN: %s\n", lookup_symbol(pc_start));
- log_target_disas(cs, pc_start, dc->pc - pc_start, 0);
- qemu_log("\n");
- qemu_log_unlock();
- }
-#endif
- tb->size = dc->pc - pc_start;
- tb->icount = num_insns;
-}
-
-void m68k_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf,
- int flags)
-{
- M68kCPU *cpu = M68K_CPU(cs);
- CPUM68KState *env = &cpu->env;
- int i;
- uint16_t sr;
- CPU_DoubleU u;
- for (i = 0; i < 8; i++)
- {
- u.d = env->fregs[i];
- cpu_fprintf(f, "D%d = %08x A%d = %08x F%d = %08x%08x (%12g)\n",
- i, env->dregs[i], i, env->aregs[i],
- i, u.l.upper, u.l.lower, *(double *)&u.d);
- }
- cpu_fprintf (f, "PC = %08x ", env->pc);
- sr = env->sr | cpu_m68k_get_ccr(env);
- cpu_fprintf(f, "SR = %04x %c%c%c%c%c ", sr, (sr & CCF_X) ? 'X' : '-',
- (sr & CCF_N) ? 'N' : '-', (sr & CCF_Z) ? 'Z' : '-',
- (sr & CCF_V) ? 'V' : '-', (sr & CCF_C) ? 'C' : '-');
- cpu_fprintf (f, "FPRESULT = %12g\n", *(double *)&env->fp_result);
-}
-
-void restore_state_to_opc(CPUM68KState *env, TranslationBlock *tb,
- target_ulong *data)
-{
- int cc_op = data[1];
- env->pc = data[0];
- if (cc_op != CC_OP_DYNAMIC) {
- env->cc_op = cc_op;
- }
-}
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-29 16:14:17 +0000