aboutsummaryrefslogtreecommitdiff
path: root/target/moxie
diff options
context:
space:
mode:
Diffstat (limited to 'target/moxie')
-rw-r--r--target/moxie/Makefile.objs2
-rw-r--r--target/moxie/cpu.c192
-rw-r--r--target/moxie/cpu.h143
-rw-r--r--target/moxie/helper.c162
-rw-r--r--target/moxie/helper.h5
-rw-r--r--target/moxie/machine.c22
-rw-r--r--target/moxie/machine.h1
-rw-r--r--target/moxie/mmu.c33
-rw-r--r--target/moxie/mmu.h14
-rw-r--r--target/moxie/translate.c908
10 files changed, 1482 insertions, 0 deletions
diff --git a/target/moxie/Makefile.objs b/target/moxie/Makefile.objs
new file mode 100644
index 0000000000..6381d4d636
--- /dev/null
+++ b/target/moxie/Makefile.objs
@@ -0,0 +1,2 @@
+obj-y += translate.o helper.o machine.o cpu.o machine.o
+obj-$(CONFIG_SOFTMMU) += mmu.o
diff --git a/target/moxie/cpu.c b/target/moxie/cpu.c
new file mode 100644
index 0000000000..b0be4a7551
--- /dev/null
+++ b/target/moxie/cpu.c
@@ -0,0 +1,192 @@
+/*
+ * QEMU Moxie CPU
+ *
+ * Copyright (c) 2013 Anthony Green
+ *
+ * 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 General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "cpu.h"
+#include "qemu-common.h"
+#include "migration/vmstate.h"
+#include "machine.h"
+#include "exec/exec-all.h"
+
+static void moxie_cpu_set_pc(CPUState *cs, vaddr value)
+{
+ MoxieCPU *cpu = MOXIE_CPU(cs);
+
+ cpu->env.pc = value;
+}
+
+static bool moxie_cpu_has_work(CPUState *cs)
+{
+ return cs->interrupt_request & CPU_INTERRUPT_HARD;
+}
+
+static void moxie_cpu_reset(CPUState *s)
+{
+ MoxieCPU *cpu = MOXIE_CPU(s);
+ MoxieCPUClass *mcc = MOXIE_CPU_GET_CLASS(cpu);
+ CPUMoxieState *env = &cpu->env;
+
+ mcc->parent_reset(s);
+
+ memset(env, 0, sizeof(CPUMoxieState));
+ env->pc = 0x1000;
+
+ tlb_flush(s, 1);
+}
+
+static void moxie_cpu_disas_set_info(CPUState *cpu, disassemble_info *info)
+{
+ info->mach = bfd_arch_moxie;
+ info->print_insn = print_insn_moxie;
+}
+
+static void moxie_cpu_realizefn(DeviceState *dev, Error **errp)
+{
+ CPUState *cs = CPU(dev);
+ MoxieCPUClass *mcc = MOXIE_CPU_GET_CLASS(dev);
+ Error *local_err = NULL;
+
+ cpu_exec_realizefn(cs, &local_err);
+ if (local_err != NULL) {
+ error_propagate(errp, local_err);
+ return;
+ }
+
+ qemu_init_vcpu(cs);
+ cpu_reset(cs);
+
+ mcc->parent_realize(dev, errp);
+}
+
+static void moxie_cpu_initfn(Object *obj)
+{
+ CPUState *cs = CPU(obj);
+ MoxieCPU *cpu = MOXIE_CPU(obj);
+ static int inited;
+
+ cs->env_ptr = &cpu->env;
+
+ if (tcg_enabled() && !inited) {
+ inited = 1;
+ moxie_translate_init();
+ }
+}
+
+static ObjectClass *moxie_cpu_class_by_name(const char *cpu_model)
+{
+ ObjectClass *oc;
+
+ if (cpu_model == NULL) {
+ return NULL;
+ }
+
+ oc = object_class_by_name(cpu_model);
+ if (oc != NULL && (!object_class_dynamic_cast(oc, TYPE_MOXIE_CPU) ||
+ object_class_is_abstract(oc))) {
+ return NULL;
+ }
+ return oc;
+}
+
+static void moxie_cpu_class_init(ObjectClass *oc, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(oc);
+ CPUClass *cc = CPU_CLASS(oc);
+ MoxieCPUClass *mcc = MOXIE_CPU_CLASS(oc);
+
+ mcc->parent_realize = dc->realize;
+ dc->realize = moxie_cpu_realizefn;
+
+ mcc->parent_reset = cc->reset;
+ cc->reset = moxie_cpu_reset;
+
+ cc->class_by_name = moxie_cpu_class_by_name;
+
+ cc->has_work = moxie_cpu_has_work;
+ cc->do_interrupt = moxie_cpu_do_interrupt;
+ cc->dump_state = moxie_cpu_dump_state;
+ cc->set_pc = moxie_cpu_set_pc;
+#ifdef CONFIG_USER_ONLY
+ cc->handle_mmu_fault = moxie_cpu_handle_mmu_fault;
+#else
+ cc->get_phys_page_debug = moxie_cpu_get_phys_page_debug;
+ cc->vmsd = &vmstate_moxie_cpu;
+#endif
+ cc->disas_set_info = moxie_cpu_disas_set_info;
+}
+
+static void moxielite_initfn(Object *obj)
+{
+ /* Set cpu feature flags */
+}
+
+static void moxie_any_initfn(Object *obj)
+{
+ /* Set cpu feature flags */
+}
+
+typedef struct MoxieCPUInfo {
+ const char *name;
+ void (*initfn)(Object *obj);
+} MoxieCPUInfo;
+
+static const MoxieCPUInfo moxie_cpus[] = {
+ { .name = "MoxieLite", .initfn = moxielite_initfn },
+ { .name = "any", .initfn = moxie_any_initfn },
+};
+
+MoxieCPU *cpu_moxie_init(const char *cpu_model)
+{
+ return MOXIE_CPU(cpu_generic_init(TYPE_MOXIE_CPU, cpu_model));
+}
+
+static void cpu_register(const MoxieCPUInfo *info)
+{
+ TypeInfo type_info = {
+ .parent = TYPE_MOXIE_CPU,
+ .instance_size = sizeof(MoxieCPU),
+ .instance_init = info->initfn,
+ .class_size = sizeof(MoxieCPUClass),
+ };
+
+ type_info.name = g_strdup_printf("%s-" TYPE_MOXIE_CPU, info->name);
+ type_register(&type_info);
+ g_free((void *)type_info.name);
+}
+
+static const TypeInfo moxie_cpu_type_info = {
+ .name = TYPE_MOXIE_CPU,
+ .parent = TYPE_CPU,
+ .instance_size = sizeof(MoxieCPU),
+ .instance_init = moxie_cpu_initfn,
+ .class_size = sizeof(MoxieCPUClass),
+ .class_init = moxie_cpu_class_init,
+};
+
+static void moxie_cpu_register_types(void)
+{
+ int i;
+ type_register_static(&moxie_cpu_type_info);
+ for (i = 0; i < ARRAY_SIZE(moxie_cpus); i++) {
+ cpu_register(&moxie_cpus[i]);
+ }
+}
+
+type_init(moxie_cpu_register_types)
diff --git a/target/moxie/cpu.h b/target/moxie/cpu.h
new file mode 100644
index 0000000000..3e880facf4
--- /dev/null
+++ b/target/moxie/cpu.h
@@ -0,0 +1,143 @@
+/*
+ * Moxie emulation
+ *
+ * Copyright (c) 2008, 2010, 2013 Anthony Green
+ *
+ * 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 General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef MOXIE_CPU_H
+#define MOXIE_CPU_H
+
+#include "qemu-common.h"
+
+#define TARGET_LONG_BITS 32
+
+#define CPUArchState struct CPUMoxieState
+
+#define MOXIE_EX_DIV0 0
+#define MOXIE_EX_BAD 1
+#define MOXIE_EX_IRQ 2
+#define MOXIE_EX_SWI 3
+#define MOXIE_EX_MMU_MISS 4
+#define MOXIE_EX_BREAK 16
+
+#include "exec/cpu-defs.h"
+#include "fpu/softfloat.h"
+
+#define TARGET_PAGE_BITS 12 /* 4k */
+
+#define TARGET_PHYS_ADDR_SPACE_BITS 32
+#define TARGET_VIRT_ADDR_SPACE_BITS 32
+
+#define NB_MMU_MODES 1
+
+typedef struct CPUMoxieState {
+
+ uint32_t flags; /* general execution flags */
+ uint32_t gregs[16]; /* general registers */
+ uint32_t sregs[256]; /* special registers */
+ uint32_t pc; /* program counter */
+ /* Instead of saving the cc value, we save the cmp arguments
+ and compute cc on demand. */
+ uint32_t cc_a; /* reg a for condition code calculation */
+ uint32_t cc_b; /* reg b for condition code calculation */
+
+ void *irq[8];
+
+ CPU_COMMON
+
+} CPUMoxieState;
+
+#include "qom/cpu.h"
+
+#define TYPE_MOXIE_CPU "moxie-cpu"
+
+#define MOXIE_CPU_CLASS(klass) \
+ OBJECT_CLASS_CHECK(MoxieCPUClass, (klass), TYPE_MOXIE_CPU)
+#define MOXIE_CPU(obj) \
+ OBJECT_CHECK(MoxieCPU, (obj), TYPE_MOXIE_CPU)
+#define MOXIE_CPU_GET_CLASS(obj) \
+ OBJECT_GET_CLASS(MoxieCPUClass, (obj), TYPE_MOXIE_CPU)
+
+/**
+ * MoxieCPUClass:
+ * @parent_reset: The parent class' reset handler.
+ *
+ * A Moxie CPU model.
+ */
+typedef struct MoxieCPUClass {
+ /*< private >*/
+ CPUClass parent_class;
+ /*< public >*/
+
+ DeviceRealize parent_realize;
+ void (*parent_reset)(CPUState *cpu);
+} MoxieCPUClass;
+
+/**
+ * MoxieCPU:
+ * @env: #CPUMoxieState
+ *
+ * A Moxie CPU.
+ */
+typedef struct MoxieCPU {
+ /*< private >*/
+ CPUState parent_obj;
+ /*< public >*/
+
+ CPUMoxieState env;
+} MoxieCPU;
+
+static inline MoxieCPU *moxie_env_get_cpu(CPUMoxieState *env)
+{
+ return container_of(env, MoxieCPU, env);
+}
+
+#define ENV_GET_CPU(e) CPU(moxie_env_get_cpu(e))
+
+#define ENV_OFFSET offsetof(MoxieCPU, env)
+
+MoxieCPU *cpu_moxie_init(const char *cpu_model);
+void moxie_cpu_do_interrupt(CPUState *cs);
+void moxie_cpu_dump_state(CPUState *cpu, FILE *f,
+ fprintf_function cpu_fprintf, int flags);
+hwaddr moxie_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
+void moxie_translate_init(void);
+int cpu_moxie_signal_handler(int host_signum, void *pinfo,
+ void *puc);
+
+#define cpu_init(cpu_model) CPU(cpu_moxie_init(cpu_model))
+
+#define cpu_signal_handler cpu_moxie_signal_handler
+
+static inline int cpu_mmu_index(CPUMoxieState *env, bool ifetch)
+{
+ return 0;
+}
+
+#include "exec/cpu-all.h"
+
+static inline void cpu_get_tb_cpu_state(CPUMoxieState *env, target_ulong *pc,
+ target_ulong *cs_base, uint32_t *flags)
+{
+ *pc = env->pc;
+ *cs_base = 0;
+ *flags = 0;
+}
+
+int moxie_cpu_handle_mmu_fault(CPUState *cpu, vaddr address,
+ int rw, int mmu_idx);
+
+#endif /* MOXIE_CPU_H */
diff --git a/target/moxie/helper.c b/target/moxie/helper.c
new file mode 100644
index 0000000000..330299f5a7
--- /dev/null
+++ b/target/moxie/helper.c
@@ -0,0 +1,162 @@
+/*
+ * Moxie helper routines.
+ *
+ * Copyright (c) 2008, 2009, 2010, 2013 Anthony Green
+ *
+ * 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 General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu/osdep.h"
+
+#include "cpu.h"
+#include "mmu.h"
+#include "exec/exec-all.h"
+#include "exec/cpu_ldst.h"
+#include "qemu/host-utils.h"
+#include "exec/helper-proto.h"
+
+/* 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 = moxie_cpu_handle_mmu_fault(cs, addr, access_type, mmu_idx);
+ if (unlikely(ret)) {
+ if (retaddr) {
+ cpu_restore_state(cs, retaddr);
+ }
+ }
+ cpu_loop_exit(cs);
+}
+
+void helper_raise_exception(CPUMoxieState *env, int ex)
+{
+ CPUState *cs = CPU(moxie_env_get_cpu(env));
+
+ cs->exception_index = ex;
+ /* Stash the exception type. */
+ env->sregs[2] = ex;
+ /* Stash the address where the exception occurred. */
+ cpu_restore_state(cs, GETPC());
+ env->sregs[5] = env->pc;
+ /* Jump to the exception handline routine. */
+ env->pc = env->sregs[1];
+ cpu_loop_exit(cs);
+}
+
+uint32_t helper_div(CPUMoxieState *env, uint32_t a, uint32_t b)
+{
+ if (unlikely(b == 0)) {
+ helper_raise_exception(env, MOXIE_EX_DIV0);
+ return 0;
+ }
+ if (unlikely(a == INT_MIN && b == -1)) {
+ return INT_MIN;
+ }
+
+ return (int32_t)a / (int32_t)b;
+}
+
+uint32_t helper_udiv(CPUMoxieState *env, uint32_t a, uint32_t b)
+{
+ if (unlikely(b == 0)) {
+ helper_raise_exception(env, MOXIE_EX_DIV0);
+ return 0;
+ }
+ return a / b;
+}
+
+void helper_debug(CPUMoxieState *env)
+{
+ CPUState *cs = CPU(moxie_env_get_cpu(env));
+
+ cs->exception_index = EXCP_DEBUG;
+ cpu_loop_exit(cs);
+}
+
+#if defined(CONFIG_USER_ONLY)
+
+void moxie_cpu_do_interrupt(CPUState *cs)
+{
+ CPUState *cs = CPU(moxie_env_get_cpu(env));
+
+ cs->exception_index = -1;
+}
+
+int moxie_cpu_handle_mmu_fault(CPUState *cs, vaddr address,
+ int rw, int mmu_idx)
+{
+ MoxieCPU *cpu = MOXIE_CPU(cs);
+
+ cs->exception_index = 0xaa;
+ cpu->env.debug1 = address;
+ cpu_dump_state(cs, stderr, fprintf, 0);
+ return 1;
+}
+
+#else /* !CONFIG_USER_ONLY */
+
+int moxie_cpu_handle_mmu_fault(CPUState *cs, vaddr address,
+ int rw, int mmu_idx)
+{
+ MoxieCPU *cpu = MOXIE_CPU(cs);
+ CPUMoxieState *env = &cpu->env;
+ MoxieMMUResult res;
+ int prot, miss;
+ target_ulong phy;
+ int r = 1;
+
+ address &= TARGET_PAGE_MASK;
+ prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
+ miss = moxie_mmu_translate(&res, env, address, rw, mmu_idx);
+ if (miss) {
+ /* handle the miss. */
+ phy = 0;
+ cs->exception_index = MOXIE_EX_MMU_MISS;
+ } else {
+ phy = res.phy;
+ r = 0;
+ }
+ tlb_set_page(cs, address, phy, prot, mmu_idx, TARGET_PAGE_SIZE);
+ return r;
+}
+
+
+void moxie_cpu_do_interrupt(CPUState *cs)
+{
+ switch (cs->exception_index) {
+ case MOXIE_EX_BREAK:
+ break;
+ default:
+ break;
+ }
+}
+
+hwaddr moxie_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
+{
+ MoxieCPU *cpu = MOXIE_CPU(cs);
+ uint32_t phy = addr;
+ MoxieMMUResult res;
+ int miss;
+
+ miss = moxie_mmu_translate(&res, &cpu->env, addr, 0, 0);
+ if (!miss) {
+ phy = res.phy;
+ }
+ return phy;
+}
+#endif
diff --git a/target/moxie/helper.h b/target/moxie/helper.h
new file mode 100644
index 0000000000..d94ef7a17e
--- /dev/null
+++ b/target/moxie/helper.h
@@ -0,0 +1,5 @@
+DEF_HELPER_2(raise_exception, void, env, int)
+DEF_HELPER_1(debug, void, env)
+
+DEF_HELPER_FLAGS_3(div, TCG_CALL_NO_WG, i32, env, i32, i32)
+DEF_HELPER_FLAGS_3(udiv, TCG_CALL_NO_WG, i32, env, i32, i32)
diff --git a/target/moxie/machine.c b/target/moxie/machine.c
new file mode 100644
index 0000000000..282dcd869f
--- /dev/null
+++ b/target/moxie/machine.c
@@ -0,0 +1,22 @@
+#include "qemu/osdep.h"
+#include "qemu-common.h"
+#include "cpu.h"
+#include "hw/hw.h"
+#include "hw/boards.h"
+#include "machine.h"
+#include "migration/cpu.h"
+
+const VMStateDescription vmstate_moxie_cpu = {
+ .name = "cpu",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32(flags, CPUMoxieState),
+ VMSTATE_UINT32_ARRAY(gregs, CPUMoxieState, 16),
+ VMSTATE_UINT32_ARRAY(sregs, CPUMoxieState, 256),
+ VMSTATE_UINT32(pc, CPUMoxieState),
+ VMSTATE_UINT32(cc_a, CPUMoxieState),
+ VMSTATE_UINT32(cc_b, CPUMoxieState),
+ VMSTATE_END_OF_LIST()
+ }
+};
diff --git a/target/moxie/machine.h b/target/moxie/machine.h
new file mode 100644
index 0000000000..a1b72907ae
--- /dev/null
+++ b/target/moxie/machine.h
@@ -0,0 +1 @@
+extern const VMStateDescription vmstate_moxie_cpu;
diff --git a/target/moxie/mmu.c b/target/moxie/mmu.c
new file mode 100644
index 0000000000..9203330b3b
--- /dev/null
+++ b/target/moxie/mmu.c
@@ -0,0 +1,33 @@
+/*
+ * Moxie mmu emulation.
+ *
+ * Copyright (c) 2008, 2013 Anthony Green
+ *
+ * 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 General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu/osdep.h"
+
+#include "cpu.h"
+#include "mmu.h"
+#include "exec/exec-all.h"
+
+int moxie_mmu_translate(MoxieMMUResult *res,
+ CPUMoxieState *env, uint32_t vaddr,
+ int rw, int mmu_idx)
+{
+ /* Perform no translation yet. */
+ res->phy = vaddr;
+ return 0;
+}
diff --git a/target/moxie/mmu.h b/target/moxie/mmu.h
new file mode 100644
index 0000000000..284a44d18e
--- /dev/null
+++ b/target/moxie/mmu.h
@@ -0,0 +1,14 @@
+#define MOXIE_MMU_ERR_EXEC 0
+#define MOXIE_MMU_ERR_READ 1
+#define MOXIE_MMU_ERR_WRITE 2
+#define MOXIE_MMU_ERR_FLUSH 3
+
+typedef struct {
+ uint32_t phy;
+ uint32_t pfn;
+ int cause_op;
+} MoxieMMUResult;
+
+int moxie_mmu_translate(MoxieMMUResult *res,
+ CPUMoxieState *env, uint32_t vaddr,
+ int rw, int mmu_idx);
diff --git a/target/moxie/translate.c b/target/moxie/translate.c
new file mode 100644
index 0000000000..0660b44c08
--- /dev/null
+++ b/target/moxie/translate.c
@@ -0,0 +1,908 @@
+/*
+ * Moxie emulation for qemu: main translation routines.
+ *
+ * Copyright (c) 2009, 2013 Anthony Green
+ *
+ * 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 General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* For information on the Moxie architecture, see
+ * http://moxielogic.org/wiki
+ */
+
+#include "qemu/osdep.h"
+
+#include "cpu.h"
+#include "exec/exec-all.h"
+#include "disas/disas.h"
+#include "tcg-op.h"
+#include "exec/cpu_ldst.h"
+
+#include "exec/helper-proto.h"
+#include "exec/helper-gen.h"
+#include "exec/log.h"
+
+/* This is the state at translation time. */
+typedef struct DisasContext {
+ struct TranslationBlock *tb;
+ target_ulong pc, saved_pc;
+ uint32_t opcode;
+ uint32_t fp_status;
+ /* Routine used to access memory */
+ int memidx;
+ int bstate;
+ target_ulong btarget;
+ int singlestep_enabled;
+} DisasContext;
+
+enum {
+ BS_NONE = 0, /* We go out of the TB without reaching a branch or an
+ * exception condition */
+ BS_STOP = 1, /* We want to stop translation for any reason */
+ BS_BRANCH = 2, /* We reached a branch condition */
+ BS_EXCP = 3, /* We reached an exception condition */
+};
+
+static TCGv cpu_pc;
+static TCGv cpu_gregs[16];
+static TCGv_env cpu_env;
+static TCGv cc_a, cc_b;
+
+#include "exec/gen-icount.h"
+
+#define REG(x) (cpu_gregs[x])
+
+/* Extract the signed 10-bit offset from a 16-bit branch
+ instruction. */
+static int extract_branch_offset(int opcode)
+{
+ return (((signed short)((opcode & ((1 << 10) - 1)) << 6)) >> 6) << 1;
+}
+
+void moxie_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf,
+ int flags)
+{
+ MoxieCPU *cpu = MOXIE_CPU(cs);
+ CPUMoxieState *env = &cpu->env;
+ int i;
+ cpu_fprintf(f, "pc=0x%08x\n", env->pc);
+ cpu_fprintf(f, "$fp=0x%08x $sp=0x%08x $r0=0x%08x $r1=0x%08x\n",
+ env->gregs[0], env->gregs[1], env->gregs[2], env->gregs[3]);
+ for (i = 4; i < 16; i += 4) {
+ cpu_fprintf(f, "$r%d=0x%08x $r%d=0x%08x $r%d=0x%08x $r%d=0x%08x\n",
+ i-2, env->gregs[i], i-1, env->gregs[i + 1],
+ i, env->gregs[i + 2], i+1, env->gregs[i + 3]);
+ }
+ for (i = 4; i < 16; i += 4) {
+ cpu_fprintf(f, "sr%d=0x%08x sr%d=0x%08x sr%d=0x%08x sr%d=0x%08x\n",
+ i-2, env->sregs[i], i-1, env->sregs[i + 1],
+ i, env->sregs[i + 2], i+1, env->sregs[i + 3]);
+ }
+}
+
+void moxie_translate_init(void)
+{
+ int i;
+ static int done_init;
+ static const char * const gregnames[16] = {
+ "$fp", "$sp", "$r0", "$r1",
+ "$r2", "$r3", "$r4", "$r5",
+ "$r6", "$r7", "$r8", "$r9",
+ "$r10", "$r11", "$r12", "$r13"
+ };
+
+ if (done_init) {
+ return;
+ }
+ cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
+ tcg_ctx.tcg_env = cpu_env;
+ cpu_pc = tcg_global_mem_new_i32(cpu_env,
+ offsetof(CPUMoxieState, pc), "$pc");
+ for (i = 0; i < 16; i++)
+ cpu_gregs[i] = tcg_global_mem_new_i32(cpu_env,
+ offsetof(CPUMoxieState, gregs[i]),
+ gregnames[i]);
+
+ cc_a = tcg_global_mem_new_i32(cpu_env,
+ offsetof(CPUMoxieState, cc_a), "cc_a");
+ cc_b = tcg_global_mem_new_i32(cpu_env,
+ offsetof(CPUMoxieState, cc_b), "cc_b");
+
+ done_init = 1;
+}
+
+static inline bool use_goto_tb(DisasContext *ctx, target_ulong dest)
+{
+ if (unlikely(ctx->singlestep_enabled)) {
+ return false;
+ }
+
+#ifndef CONFIG_USER_ONLY
+ return (ctx->tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK);
+#else
+ return true;
+#endif
+}
+
+static inline void gen_goto_tb(CPUMoxieState *env, DisasContext *ctx,
+ int n, target_ulong dest)
+{
+ if (use_goto_tb(ctx, dest)) {
+ tcg_gen_goto_tb(n);
+ tcg_gen_movi_i32(cpu_pc, dest);
+ tcg_gen_exit_tb((uintptr_t)ctx->tb + n);
+ } else {
+ tcg_gen_movi_i32(cpu_pc, dest);
+ if (ctx->singlestep_enabled) {
+ gen_helper_debug(cpu_env);
+ }
+ tcg_gen_exit_tb(0);
+ }
+}
+
+static int decode_opc(MoxieCPU *cpu, DisasContext *ctx)
+{
+ CPUMoxieState *env = &cpu->env;
+
+ /* Local cache for the instruction opcode. */
+ int opcode;
+ /* Set the default instruction length. */
+ int length = 2;
+
+ /* Examine the 16-bit opcode. */
+ opcode = ctx->opcode;
+
+ /* Decode instruction. */
+ if (opcode & (1 << 15)) {
+ if (opcode & (1 << 14)) {
+ /* This is a Form 3 instruction. */
+ int inst = (opcode >> 10 & 0xf);
+
+#define BRANCH(cond) \
+ do { \
+ TCGLabel *l1 = gen_new_label(); \
+ tcg_gen_brcond_i32(cond, cc_a, cc_b, l1); \
+ gen_goto_tb(env, ctx, 1, ctx->pc+2); \
+ gen_set_label(l1); \
+ gen_goto_tb(env, ctx, 0, extract_branch_offset(opcode) + ctx->pc+2); \
+ ctx->bstate = BS_BRANCH; \
+ } while (0)
+
+ switch (inst) {
+ case 0x00: /* beq */
+ BRANCH(TCG_COND_EQ);
+ break;
+ case 0x01: /* bne */
+ BRANCH(TCG_COND_NE);
+ break;
+ case 0x02: /* blt */
+ BRANCH(TCG_COND_LT);
+ break;
+ case 0x03: /* bgt */
+ BRANCH(TCG_COND_GT);
+ break;
+ case 0x04: /* bltu */
+ BRANCH(TCG_COND_LTU);
+ break;
+ case 0x05: /* bgtu */
+ BRANCH(TCG_COND_GTU);
+ break;
+ case 0x06: /* bge */
+ BRANCH(TCG_COND_GE);
+ break;
+ case 0x07: /* ble */
+ BRANCH(TCG_COND_LE);
+ break;
+ case 0x08: /* bgeu */
+ BRANCH(TCG_COND_GEU);
+ break;
+ case 0x09: /* bleu */
+ BRANCH(TCG_COND_LEU);
+ break;
+ default:
+ {
+ TCGv temp = tcg_temp_new_i32();
+ tcg_gen_movi_i32(cpu_pc, ctx->pc);
+ tcg_gen_movi_i32(temp, MOXIE_EX_BAD);
+ gen_helper_raise_exception(cpu_env, temp);
+ tcg_temp_free_i32(temp);
+ }
+ break;
+ }
+ } else {
+ /* This is a Form 2 instruction. */
+ int inst = (opcode >> 12 & 0x3);
+ switch (inst) {
+ case 0x00: /* inc */
+ {
+ int a = (opcode >> 8) & 0xf;
+ unsigned int v = (opcode & 0xff);
+ tcg_gen_addi_i32(REG(a), REG(a), v);
+ }
+ break;
+ case 0x01: /* dec */
+ {
+ int a = (opcode >> 8) & 0xf;
+ unsigned int v = (opcode & 0xff);
+ tcg_gen_subi_i32(REG(a), REG(a), v);
+ }
+ break;
+ case 0x02: /* gsr */
+ {
+ int a = (opcode >> 8) & 0xf;
+ unsigned v = (opcode & 0xff);
+ tcg_gen_ld_i32(REG(a), cpu_env,
+ offsetof(CPUMoxieState, sregs[v]));
+ }
+ break;
+ case 0x03: /* ssr */
+ {
+ int a = (opcode >> 8) & 0xf;
+ unsigned v = (opcode & 0xff);
+ tcg_gen_st_i32(REG(a), cpu_env,
+ offsetof(CPUMoxieState, sregs[v]));
+ }
+ break;
+ default:
+ {
+ TCGv temp = tcg_temp_new_i32();
+ tcg_gen_movi_i32(cpu_pc, ctx->pc);
+ tcg_gen_movi_i32(temp, MOXIE_EX_BAD);
+ gen_helper_raise_exception(cpu_env, temp);
+ tcg_temp_free_i32(temp);
+ }
+ break;
+ }
+ }
+ } else {
+ /* This is a Form 1 instruction. */
+ int inst = opcode >> 8;
+ switch (inst) {
+ case 0x00: /* nop */
+ break;
+ case 0x01: /* ldi.l (immediate) */
+ {
+ int reg = (opcode >> 4) & 0xf;
+ int val = cpu_ldl_code(env, ctx->pc+2);
+ tcg_gen_movi_i32(REG(reg), val);
+ length = 6;
+ }
+ break;
+ case 0x02: /* mov (register-to-register) */
+ {
+ int dest = (opcode >> 4) & 0xf;
+ int src = opcode & 0xf;
+ tcg_gen_mov_i32(REG(dest), REG(src));
+ }
+ break;
+ case 0x03: /* jsra */
+ {
+ TCGv t1 = tcg_temp_new_i32();
+ TCGv t2 = tcg_temp_new_i32();
+
+ tcg_gen_movi_i32(t1, ctx->pc + 6);
+
+ /* Make space for the static chain and return address. */
+ tcg_gen_subi_i32(t2, REG(1), 8);
+ tcg_gen_mov_i32(REG(1), t2);
+ tcg_gen_qemu_st32(t1, REG(1), ctx->memidx);
+
+ /* Push the current frame pointer. */
+ tcg_gen_subi_i32(t2, REG(1), 4);
+ tcg_gen_mov_i32(REG(1), t2);
+ tcg_gen_qemu_st32(REG(0), REG(1), ctx->memidx);
+
+ /* Set the pc and $fp. */
+ tcg_gen_mov_i32(REG(0), REG(1));
+
+ gen_goto_tb(env, ctx, 0, cpu_ldl_code(env, ctx->pc+2));
+
+ tcg_temp_free_i32(t1);
+ tcg_temp_free_i32(t2);
+
+ ctx->bstate = BS_BRANCH;
+ length = 6;
+ }
+ break;
+ case 0x04: /* ret */
+ {
+ TCGv t1 = tcg_temp_new_i32();
+
+ /* The new $sp is the old $fp. */
+ tcg_gen_mov_i32(REG(1), REG(0));
+
+ /* Pop the frame pointer. */
+ tcg_gen_qemu_ld32u(REG(0), REG(1), ctx->memidx);
+ tcg_gen_addi_i32(t1, REG(1), 4);
+ tcg_gen_mov_i32(REG(1), t1);
+
+
+ /* Pop the return address and skip over the static chain
+ slot. */
+ tcg_gen_qemu_ld32u(cpu_pc, REG(1), ctx->memidx);
+ tcg_gen_addi_i32(t1, REG(1), 8);
+ tcg_gen_mov_i32(REG(1), t1);
+
+ tcg_temp_free_i32(t1);
+
+ /* Jump... */
+ tcg_gen_exit_tb(0);
+
+ ctx->bstate = BS_BRANCH;
+ }
+ break;
+ case 0x05: /* add.l */
+ {
+ int a = (opcode >> 4) & 0xf;
+ int b = opcode & 0xf;
+
+ tcg_gen_add_i32(REG(a), REG(a), REG(b));
+ }
+ break;
+ case 0x06: /* push */
+ {
+ int a = (opcode >> 4) & 0xf;
+ int b = opcode & 0xf;
+
+ TCGv t1 = tcg_temp_new_i32();
+ tcg_gen_subi_i32(t1, REG(a), 4);
+ tcg_gen_mov_i32(REG(a), t1);
+ tcg_gen_qemu_st32(REG(b), REG(a), ctx->memidx);
+ tcg_temp_free_i32(t1);
+ }
+ break;
+ case 0x07: /* pop */
+ {
+ int a = (opcode >> 4) & 0xf;
+ int b = opcode & 0xf;
+ TCGv t1 = tcg_temp_new_i32();
+
+ tcg_gen_qemu_ld32u(REG(b), REG(a), ctx->memidx);
+ tcg_gen_addi_i32(t1, REG(a), 4);
+ tcg_gen_mov_i32(REG(a), t1);
+ tcg_temp_free_i32(t1);
+ }
+ break;
+ case 0x08: /* lda.l */
+ {
+ int reg = (opcode >> 4) & 0xf;
+
+ TCGv ptr = tcg_temp_new_i32();
+ tcg_gen_movi_i32(ptr, cpu_ldl_code(env, ctx->pc+2));
+ tcg_gen_qemu_ld32u(REG(reg), ptr, ctx->memidx);
+ tcg_temp_free_i32(ptr);
+
+ length = 6;
+ }
+ break;
+ case 0x09: /* sta.l */
+ {
+ int val = (opcode >> 4) & 0xf;
+
+ TCGv ptr = tcg_temp_new_i32();
+ tcg_gen_movi_i32(ptr, cpu_ldl_code(env, ctx->pc+2));
+ tcg_gen_qemu_st32(REG(val), ptr, ctx->memidx);
+ tcg_temp_free_i32(ptr);
+
+ length = 6;
+ }
+ break;
+ case 0x0a: /* ld.l (register indirect) */
+ {
+ int src = opcode & 0xf;
+ int dest = (opcode >> 4) & 0xf;
+
+ tcg_gen_qemu_ld32u(REG(dest), REG(src), ctx->memidx);
+ }
+ break;
+ case 0x0b: /* st.l */
+ {
+ int dest = (opcode >> 4) & 0xf;
+ int val = opcode & 0xf;
+
+ tcg_gen_qemu_st32(REG(val), REG(dest), ctx->memidx);
+ }
+ break;
+ case 0x0c: /* ldo.l */
+ {
+ int a = (opcode >> 4) & 0xf;
+ int b = opcode & 0xf;
+
+ TCGv t1 = tcg_temp_new_i32();
+ TCGv t2 = tcg_temp_new_i32();
+ tcg_gen_addi_i32(t1, REG(b), cpu_ldl_code(env, ctx->pc+2));
+ tcg_gen_qemu_ld32u(t2, t1, ctx->memidx);
+ tcg_gen_mov_i32(REG(a), t2);
+
+ tcg_temp_free_i32(t1);
+ tcg_temp_free_i32(t2);
+
+ length = 6;
+ }
+ break;
+ case 0x0d: /* sto.l */
+ {
+ int a = (opcode >> 4) & 0xf;
+ int b = opcode & 0xf;
+
+ TCGv t1 = tcg_temp_new_i32();
+ TCGv t2 = tcg_temp_new_i32();
+ tcg_gen_addi_i32(t1, REG(a), cpu_ldl_code(env, ctx->pc+2));
+ tcg_gen_qemu_st32(REG(b), t1, ctx->memidx);
+
+ tcg_temp_free_i32(t1);
+ tcg_temp_free_i32(t2);
+
+ length = 6;
+ }
+ break;
+ case 0x0e: /* cmp */
+ {
+ int a = (opcode >> 4) & 0xf;
+ int b = opcode & 0xf;
+
+ tcg_gen_mov_i32(cc_a, REG(a));
+ tcg_gen_mov_i32(cc_b, REG(b));
+ }
+ break;
+ case 0x19: /* jsr */
+ {
+ int fnreg = (opcode >> 4) & 0xf;
+
+ /* Load the stack pointer into T0. */
+ TCGv t1 = tcg_temp_new_i32();
+ TCGv t2 = tcg_temp_new_i32();
+
+ tcg_gen_movi_i32(t1, ctx->pc+2);
+
+ /* Make space for the static chain and return address. */
+ tcg_gen_subi_i32(t2, REG(1), 8);
+ tcg_gen_mov_i32(REG(1), t2);
+ tcg_gen_qemu_st32(t1, REG(1), ctx->memidx);
+
+ /* Push the current frame pointer. */
+ tcg_gen_subi_i32(t2, REG(1), 4);
+ tcg_gen_mov_i32(REG(1), t2);
+ tcg_gen_qemu_st32(REG(0), REG(1), ctx->memidx);
+
+ /* Set the pc and $fp. */
+ tcg_gen_mov_i32(REG(0), REG(1));
+ tcg_gen_mov_i32(cpu_pc, REG(fnreg));
+ tcg_temp_free_i32(t1);
+ tcg_temp_free_i32(t2);
+ tcg_gen_exit_tb(0);
+ ctx->bstate = BS_BRANCH;
+ }
+ break;
+ case 0x1a: /* jmpa */
+ {
+ tcg_gen_movi_i32(cpu_pc, cpu_ldl_code(env, ctx->pc+2));
+ tcg_gen_exit_tb(0);
+ ctx->bstate = BS_BRANCH;
+ length = 6;
+ }
+ break;
+ case 0x1b: /* ldi.b (immediate) */
+ {
+ int reg = (opcode >> 4) & 0xf;
+ int val = cpu_ldl_code(env, ctx->pc+2);
+ tcg_gen_movi_i32(REG(reg), val);
+ length = 6;
+ }
+ break;
+ case 0x1c: /* ld.b (register indirect) */
+ {
+ int src = opcode & 0xf;
+ int dest = (opcode >> 4) & 0xf;
+
+ tcg_gen_qemu_ld8u(REG(dest), REG(src), ctx->memidx);
+ }
+ break;
+ case 0x1d: /* lda.b */
+ {
+ int reg = (opcode >> 4) & 0xf;
+
+ TCGv ptr = tcg_temp_new_i32();
+ tcg_gen_movi_i32(ptr, cpu_ldl_code(env, ctx->pc+2));
+ tcg_gen_qemu_ld8u(REG(reg), ptr, ctx->memidx);
+ tcg_temp_free_i32(ptr);
+
+ length = 6;
+ }
+ break;
+ case 0x1e: /* st.b */
+ {
+ int dest = (opcode >> 4) & 0xf;
+ int val = opcode & 0xf;
+
+ tcg_gen_qemu_st8(REG(val), REG(dest), ctx->memidx);
+ }
+ break;
+ case 0x1f: /* sta.b */
+ {
+ int val = (opcode >> 4) & 0xf;
+
+ TCGv ptr = tcg_temp_new_i32();
+ tcg_gen_movi_i32(ptr, cpu_ldl_code(env, ctx->pc+2));
+ tcg_gen_qemu_st8(REG(val), ptr, ctx->memidx);
+ tcg_temp_free_i32(ptr);
+
+ length = 6;
+ }
+ break;
+ case 0x20: /* ldi.s (immediate) */
+ {
+ int reg = (opcode >> 4) & 0xf;
+ int val = cpu_ldl_code(env, ctx->pc+2);
+ tcg_gen_movi_i32(REG(reg), val);
+ length = 6;
+ }
+ break;
+ case 0x21: /* ld.s (register indirect) */
+ {
+ int src = opcode & 0xf;
+ int dest = (opcode >> 4) & 0xf;
+
+ tcg_gen_qemu_ld16u(REG(dest), REG(src), ctx->memidx);
+ }
+ break;
+ case 0x22: /* lda.s */
+ {
+ int reg = (opcode >> 4) & 0xf;
+
+ TCGv ptr = tcg_temp_new_i32();
+ tcg_gen_movi_i32(ptr, cpu_ldl_code(env, ctx->pc+2));
+ tcg_gen_qemu_ld16u(REG(reg), ptr, ctx->memidx);
+ tcg_temp_free_i32(ptr);
+
+ length = 6;
+ }
+ break;
+ case 0x23: /* st.s */
+ {
+ int dest = (opcode >> 4) & 0xf;
+ int val = opcode & 0xf;
+
+ tcg_gen_qemu_st16(REG(val), REG(dest), ctx->memidx);
+ }
+ break;
+ case 0x24: /* sta.s */
+ {
+ int val = (opcode >> 4) & 0xf;
+
+ TCGv ptr = tcg_temp_new_i32();
+ tcg_gen_movi_i32(ptr, cpu_ldl_code(env, ctx->pc+2));
+ tcg_gen_qemu_st16(REG(val), ptr, ctx->memidx);
+ tcg_temp_free_i32(ptr);
+
+ length = 6;
+ }
+ break;
+ case 0x25: /* jmp */
+ {
+ int reg = (opcode >> 4) & 0xf;
+ tcg_gen_mov_i32(cpu_pc, REG(reg));
+ tcg_gen_exit_tb(0);
+ ctx->bstate = BS_BRANCH;
+ }
+ break;
+ case 0x26: /* and */
+ {
+ int a = (opcode >> 4) & 0xf;
+ int b = opcode & 0xf;
+
+ tcg_gen_and_i32(REG(a), REG(a), REG(b));
+ }
+ break;
+ case 0x27: /* lshr */
+ {
+ int a = (opcode >> 4) & 0xf;
+ int b = opcode & 0xf;
+
+ TCGv sv = tcg_temp_new_i32();
+ tcg_gen_andi_i32(sv, REG(b), 0x1f);
+ tcg_gen_shr_i32(REG(a), REG(a), sv);
+ tcg_temp_free_i32(sv);
+ }
+ break;
+ case 0x28: /* ashl */
+ {
+ int a = (opcode >> 4) & 0xf;
+ int b = opcode & 0xf;
+
+ TCGv sv = tcg_temp_new_i32();
+ tcg_gen_andi_i32(sv, REG(b), 0x1f);
+ tcg_gen_shl_i32(REG(a), REG(a), sv);
+ tcg_temp_free_i32(sv);
+ }
+ break;
+ case 0x29: /* sub.l */
+ {
+ int a = (opcode >> 4) & 0xf;
+ int b = opcode & 0xf;
+
+ tcg_gen_sub_i32(REG(a), REG(a), REG(b));
+ }
+ break;
+ case 0x2a: /* neg */
+ {
+ int a = (opcode >> 4) & 0xf;
+ int b = opcode & 0xf;
+
+ tcg_gen_neg_i32(REG(a), REG(b));
+ }
+ break;
+ case 0x2b: /* or */
+ {
+ int a = (opcode >> 4) & 0xf;
+ int b = opcode & 0xf;
+
+ tcg_gen_or_i32(REG(a), REG(a), REG(b));
+ }
+ break;
+ case 0x2c: /* not */
+ {
+ int a = (opcode >> 4) & 0xf;
+ int b = opcode & 0xf;
+
+ tcg_gen_not_i32(REG(a), REG(b));
+ }
+ break;
+ case 0x2d: /* ashr */
+ {
+ int a = (opcode >> 4) & 0xf;
+ int b = opcode & 0xf;
+
+ TCGv sv = tcg_temp_new_i32();
+ tcg_gen_andi_i32(sv, REG(b), 0x1f);
+ tcg_gen_sar_i32(REG(a), REG(a), sv);
+ tcg_temp_free_i32(sv);
+ }
+ break;
+ case 0x2e: /* xor */
+ {
+ int a = (opcode >> 4) & 0xf;
+ int b = opcode & 0xf;
+
+ tcg_gen_xor_i32(REG(a), REG(a), REG(b));
+ }
+ break;
+ case 0x2f: /* mul.l */
+ {
+ int a = (opcode >> 4) & 0xf;
+ int b = opcode & 0xf;
+
+ tcg_gen_mul_i32(REG(a), REG(a), REG(b));
+ }
+ break;
+ case 0x30: /* swi */
+ {
+ int val = cpu_ldl_code(env, ctx->pc+2);
+
+ TCGv temp = tcg_temp_new_i32();
+ tcg_gen_movi_i32(temp, val);
+ tcg_gen_st_i32(temp, cpu_env,
+ offsetof(CPUMoxieState, sregs[3]));
+ tcg_gen_movi_i32(cpu_pc, ctx->pc);
+ tcg_gen_movi_i32(temp, MOXIE_EX_SWI);
+ gen_helper_raise_exception(cpu_env, temp);
+ tcg_temp_free_i32(temp);
+
+ length = 6;
+ }
+ break;
+ case 0x31: /* div.l */
+ {
+ int a = (opcode >> 4) & 0xf;
+ int b = opcode & 0xf;
+ tcg_gen_movi_i32(cpu_pc, ctx->pc);
+ gen_helper_div(REG(a), cpu_env, REG(a), REG(b));
+ }
+ break;
+ case 0x32: /* udiv.l */
+ {
+ int a = (opcode >> 4) & 0xf;
+ int b = opcode & 0xf;
+ tcg_gen_movi_i32(cpu_pc, ctx->pc);
+ gen_helper_udiv(REG(a), cpu_env, REG(a), REG(b));
+ }
+ break;
+ case 0x33: /* mod.l */
+ {
+ int a = (opcode >> 4) & 0xf;
+ int b = opcode & 0xf;
+ tcg_gen_rem_i32(REG(a), REG(a), REG(b));
+ }
+ break;
+ case 0x34: /* umod.l */
+ {
+ int a = (opcode >> 4) & 0xf;
+ int b = opcode & 0xf;
+ tcg_gen_remu_i32(REG(a), REG(a), REG(b));
+ }
+ break;
+ case 0x35: /* brk */
+ {
+ TCGv temp = tcg_temp_new_i32();
+ tcg_gen_movi_i32(cpu_pc, ctx->pc);
+ tcg_gen_movi_i32(temp, MOXIE_EX_BREAK);
+ gen_helper_raise_exception(cpu_env, temp);
+ tcg_temp_free_i32(temp);
+ }
+ break;
+ case 0x36: /* ldo.b */
+ {
+ int a = (opcode >> 4) & 0xf;
+ int b = opcode & 0xf;
+
+ TCGv t1 = tcg_temp_new_i32();
+ TCGv t2 = tcg_temp_new_i32();
+ tcg_gen_addi_i32(t1, REG(b), cpu_ldl_code(env, ctx->pc+2));
+ tcg_gen_qemu_ld8u(t2, t1, ctx->memidx);
+ tcg_gen_mov_i32(REG(a), t2);
+
+ tcg_temp_free_i32(t1);
+ tcg_temp_free_i32(t2);
+
+ length = 6;
+ }
+ break;
+ case 0x37: /* sto.b */
+ {
+ int a = (opcode >> 4) & 0xf;
+ int b = opcode & 0xf;
+
+ TCGv t1 = tcg_temp_new_i32();
+ TCGv t2 = tcg_temp_new_i32();
+ tcg_gen_addi_i32(t1, REG(a), cpu_ldl_code(env, ctx->pc+2));
+ tcg_gen_qemu_st8(REG(b), t1, ctx->memidx);
+
+ tcg_temp_free_i32(t1);
+ tcg_temp_free_i32(t2);
+
+ length = 6;
+ }
+ break;
+ case 0x38: /* ldo.s */
+ {
+ int a = (opcode >> 4) & 0xf;
+ int b = opcode & 0xf;
+
+ TCGv t1 = tcg_temp_new_i32();
+ TCGv t2 = tcg_temp_new_i32();
+ tcg_gen_addi_i32(t1, REG(b), cpu_ldl_code(env, ctx->pc+2));
+ tcg_gen_qemu_ld16u(t2, t1, ctx->memidx);
+ tcg_gen_mov_i32(REG(a), t2);
+
+ tcg_temp_free_i32(t1);
+ tcg_temp_free_i32(t2);
+
+ length = 6;
+ }
+ break;
+ case 0x39: /* sto.s */
+ {
+ int a = (opcode >> 4) & 0xf;
+ int b = opcode & 0xf;
+
+ TCGv t1 = tcg_temp_new_i32();
+ TCGv t2 = tcg_temp_new_i32();
+ tcg_gen_addi_i32(t1, REG(a), cpu_ldl_code(env, ctx->pc+2));
+ tcg_gen_qemu_st16(REG(b), t1, ctx->memidx);
+ tcg_temp_free_i32(t1);
+ tcg_temp_free_i32(t2);
+
+ length = 6;
+ }
+ break;
+ default:
+ {
+ TCGv temp = tcg_temp_new_i32();
+ tcg_gen_movi_i32(cpu_pc, ctx->pc);
+ tcg_gen_movi_i32(temp, MOXIE_EX_BAD);
+ gen_helper_raise_exception(cpu_env, temp);
+ tcg_temp_free_i32(temp);
+ }
+ break;
+ }
+ }
+
+ return length;
+}
+
+/* generate intermediate code for basic block 'tb'. */
+void gen_intermediate_code(CPUMoxieState *env, struct TranslationBlock *tb)
+{
+ MoxieCPU *cpu = moxie_env_get_cpu(env);
+ CPUState *cs = CPU(cpu);
+ DisasContext ctx;
+ target_ulong pc_start;
+ int num_insns, max_insns;
+
+ pc_start = tb->pc;
+ ctx.pc = pc_start;
+ ctx.saved_pc = -1;
+ ctx.tb = tb;
+ ctx.memidx = 0;
+ ctx.singlestep_enabled = 0;
+ ctx.bstate = BS_NONE;
+ 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 {
+ tcg_gen_insn_start(ctx.pc);
+ num_insns++;
+
+ if (unlikely(cpu_breakpoint_test(cs, ctx.pc, BP_ANY))) {
+ tcg_gen_movi_i32(cpu_pc, ctx.pc);
+ gen_helper_debug(cpu_env);
+ ctx.bstate = BS_EXCP;
+ /* 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. */
+ ctx.pc += 2;
+ goto done_generating;
+ }
+
+ ctx.opcode = cpu_lduw_code(env, ctx.pc);
+ ctx.pc += decode_opc(cpu, &ctx);
+
+ if (num_insns >= max_insns) {
+ break;
+ }
+ if (cs->singlestep_enabled) {
+ break;
+ }
+ if ((ctx.pc & (TARGET_PAGE_SIZE - 1)) == 0) {
+ break;
+ }
+ } while (ctx.bstate == BS_NONE && !tcg_op_buf_full());
+
+ if (cs->singlestep_enabled) {
+ tcg_gen_movi_tl(cpu_pc, ctx.pc);
+ gen_helper_debug(cpu_env);
+ } else {
+ switch (ctx.bstate) {
+ case BS_STOP:
+ case BS_NONE:
+ gen_goto_tb(env, &ctx, 0, ctx.pc);
+ break;
+ case BS_EXCP:
+ tcg_gen_exit_tb(0);
+ break;
+ case BS_BRANCH:
+ default:
+ break;
+ }
+ }
+ done_generating:
+ gen_tb_end(tb, num_insns);
+
+ tb->size = ctx.pc - pc_start;
+ tb->icount = num_insns;
+}
+
+void restore_state_to_opc(CPUMoxieState *env, TranslationBlock *tb,
+ target_ulong *data)
+{
+ env->pc = data[0];
+}
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-30 20:53:03 +0000