diff options
Diffstat (limited to 'target/unicore32')
| -rw-r--r-- | target/unicore32/Makefile.objs | 4 | ||||
| -rw-r--r-- | target/unicore32/cpu-qom.h | 41 | ||||
| -rw-r--r-- | target/unicore32/cpu.c | 204 | ||||
| -rw-r--r-- | target/unicore32/cpu.h | 188 | ||||
| -rw-r--r-- | target/unicore32/helper.c | 263 | ||||
| -rw-r--r-- | target/unicore32/helper.h | 65 | ||||
| -rw-r--r-- | target/unicore32/op_helper.c | 261 | ||||
| -rw-r--r-- | target/unicore32/softmmu.c | 278 | ||||
| -rw-r--r-- | target/unicore32/translate.c | 2111 | ||||
| -rw-r--r-- | target/unicore32/ucf64_helper.c | 325 |
10 files changed, 3740 insertions, 0 deletions
diff --git a/target/unicore32/Makefile.objs b/target/unicore32/Makefile.objs new file mode 100644 index 0000000000..6b41b1e9ef --- /dev/null +++ b/target/unicore32/Makefile.objs @@ -0,0 +1,4 @@ +obj-y += translate.o op_helper.o helper.o cpu.o +obj-y += ucf64_helper.o + +obj-$(CONFIG_SOFTMMU) += softmmu.o diff --git a/target/unicore32/cpu-qom.h b/target/unicore32/cpu-qom.h new file mode 100644 index 0000000000..bc68e78045 --- /dev/null +++ b/target/unicore32/cpu-qom.h @@ -0,0 +1,41 @@ +/* + * QEMU UniCore32 CPU + * + * Copyright (c) 2012 SUSE LINUX Products GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation, or (at your option) any + * later version. See the COPYING file in the top-level directory. + */ +#ifndef QEMU_UC32_CPU_QOM_H +#define QEMU_UC32_CPU_QOM_H + +#include "qom/cpu.h" + +#define TYPE_UNICORE32_CPU "unicore32-cpu" + +#define UNICORE32_CPU_CLASS(klass) \ + OBJECT_CLASS_CHECK(UniCore32CPUClass, (klass), TYPE_UNICORE32_CPU) +#define UNICORE32_CPU(obj) \ + OBJECT_CHECK(UniCore32CPU, (obj), TYPE_UNICORE32_CPU) +#define UNICORE32_CPU_GET_CLASS(obj) \ + OBJECT_GET_CLASS(UniCore32CPUClass, (obj), TYPE_UNICORE32_CPU) + +/** + * UniCore32CPUClass: + * @parent_realize: The parent class' realize handler. + * + * A UniCore32 CPU model. + */ +typedef struct UniCore32CPUClass { + /*< private >*/ + CPUClass parent_class; + /*< public >*/ + + DeviceRealize parent_realize; +} UniCore32CPUClass; + +typedef struct UniCore32CPU UniCore32CPU; + +#endif diff --git a/target/unicore32/cpu.c b/target/unicore32/cpu.c new file mode 100644 index 0000000000..c169972b59 --- /dev/null +++ b/target/unicore32/cpu.c @@ -0,0 +1,204 @@ +/* + * QEMU UniCore32 CPU + * + * Copyright (c) 2010-2012 Guan Xuetao + * Copyright (c) 2012 SUSE LINUX Products GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Contributions from 2012-04-01 on are considered under GPL version 2, + * or (at your option) any later version. + */ + +#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 uc32_cpu_set_pc(CPUState *cs, vaddr value) +{ + UniCore32CPU *cpu = UNICORE32_CPU(cs); + + cpu->env.regs[31] = value; +} + +static bool uc32_cpu_has_work(CPUState *cs) +{ + return cs->interrupt_request & + (CPU_INTERRUPT_HARD | CPU_INTERRUPT_EXITTB); +} + +static inline void set_feature(CPUUniCore32State *env, int feature) +{ + env->features |= feature; +} + +/* CPU models */ + +static ObjectClass *uc32_cpu_class_by_name(const char *cpu_model) +{ + ObjectClass *oc; + char *typename; + + if (cpu_model == NULL) { + return NULL; + } + + typename = g_strdup_printf("%s-" TYPE_UNICORE32_CPU, cpu_model); + oc = object_class_by_name(typename); + g_free(typename); + if (oc != NULL && (!object_class_dynamic_cast(oc, TYPE_UNICORE32_CPU) || + object_class_is_abstract(oc))) { + oc = NULL; + } + return oc; +} + +typedef struct UniCore32CPUInfo { + const char *name; + void (*instance_init)(Object *obj); +} UniCore32CPUInfo; + +static void unicore_ii_cpu_initfn(Object *obj) +{ + UniCore32CPU *cpu = UNICORE32_CPU(obj); + CPUUniCore32State *env = &cpu->env; + + env->cp0.c0_cpuid = 0x4d000863; + env->cp0.c0_cachetype = 0x0d152152; + env->cp0.c1_sys = 0x2000; + env->cp0.c2_base = 0x0; + env->cp0.c3_faultstatus = 0x0; + env->cp0.c4_faultaddr = 0x0; + env->ucf64.xregs[UC32_UCF64_FPSCR] = 0; + + set_feature(env, UC32_HWCAP_CMOV); + set_feature(env, UC32_HWCAP_UCF64); + set_snan_bit_is_one(1, &env->ucf64.fp_status); +} + +static void uc32_any_cpu_initfn(Object *obj) +{ + UniCore32CPU *cpu = UNICORE32_CPU(obj); + CPUUniCore32State *env = &cpu->env; + + env->cp0.c0_cpuid = 0xffffffff; + env->ucf64.xregs[UC32_UCF64_FPSCR] = 0; + + set_feature(env, UC32_HWCAP_CMOV); + set_feature(env, UC32_HWCAP_UCF64); + set_snan_bit_is_one(1, &env->ucf64.fp_status); +} + +static const UniCore32CPUInfo uc32_cpus[] = { + { .name = "UniCore-II", .instance_init = unicore_ii_cpu_initfn }, + { .name = "any", .instance_init = uc32_any_cpu_initfn }, +}; + +static void uc32_cpu_realizefn(DeviceState *dev, Error **errp) +{ + CPUState *cs = CPU(dev); + UniCore32CPUClass *ucc = UNICORE32_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); + + ucc->parent_realize(dev, errp); +} + +static void uc32_cpu_initfn(Object *obj) +{ + CPUState *cs = CPU(obj); + UniCore32CPU *cpu = UNICORE32_CPU(obj); + CPUUniCore32State *env = &cpu->env; + static bool inited; + + cs->env_ptr = env; + +#ifdef CONFIG_USER_ONLY + env->uncached_asr = ASR_MODE_USER; + env->regs[31] = 0; +#else + env->uncached_asr = ASR_MODE_PRIV; + env->regs[31] = 0x03000000; +#endif + + tlb_flush(cs, 1); + + if (tcg_enabled() && !inited) { + inited = true; + uc32_translate_init(); + } +} + +static const VMStateDescription vmstate_uc32_cpu = { + .name = "cpu", + .unmigratable = 1, +}; + +static void uc32_cpu_class_init(ObjectClass *oc, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(oc); + CPUClass *cc = CPU_CLASS(oc); + UniCore32CPUClass *ucc = UNICORE32_CPU_CLASS(oc); + + ucc->parent_realize = dc->realize; + dc->realize = uc32_cpu_realizefn; + + cc->class_by_name = uc32_cpu_class_by_name; + cc->has_work = uc32_cpu_has_work; + cc->do_interrupt = uc32_cpu_do_interrupt; + cc->cpu_exec_interrupt = uc32_cpu_exec_interrupt; + cc->dump_state = uc32_cpu_dump_state; + cc->set_pc = uc32_cpu_set_pc; +#ifdef CONFIG_USER_ONLY + cc->handle_mmu_fault = uc32_cpu_handle_mmu_fault; +#else + cc->get_phys_page_debug = uc32_cpu_get_phys_page_debug; +#endif + dc->vmsd = &vmstate_uc32_cpu; +} + +static void uc32_register_cpu_type(const UniCore32CPUInfo *info) +{ + TypeInfo type_info = { + .parent = TYPE_UNICORE32_CPU, + .instance_init = info->instance_init, + }; + + type_info.name = g_strdup_printf("%s-" TYPE_UNICORE32_CPU, info->name); + type_register(&type_info); + g_free((void *)type_info.name); +} + +static const TypeInfo uc32_cpu_type_info = { + .name = TYPE_UNICORE32_CPU, + .parent = TYPE_CPU, + .instance_size = sizeof(UniCore32CPU), + .instance_init = uc32_cpu_initfn, + .abstract = true, + .class_size = sizeof(UniCore32CPUClass), + .class_init = uc32_cpu_class_init, +}; + +static void uc32_cpu_register_types(void) +{ + int i; + + type_register_static(&uc32_cpu_type_info); + for (i = 0; i < ARRAY_SIZE(uc32_cpus); i++) { + uc32_register_cpu_type(&uc32_cpus[i]); + } +} + +type_init(uc32_cpu_register_types) diff --git a/target/unicore32/cpu.h b/target/unicore32/cpu.h new file mode 100644 index 0000000000..7b5b405e79 --- /dev/null +++ b/target/unicore32/cpu.h @@ -0,0 +1,188 @@ +/* + * UniCore32 virtual CPU header + * + * Copyright (C) 2010-2012 Guan Xuetao + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation, or (at your option) any + * later version. See the COPYING file in the top-level directory. + */ + +#ifndef UNICORE32_CPU_H +#define UNICORE32_CPU_H + +#define TARGET_LONG_BITS 32 +#define TARGET_PAGE_BITS 12 + +#define TARGET_PHYS_ADDR_SPACE_BITS 32 +#define TARGET_VIRT_ADDR_SPACE_BITS 32 + +#define CPUArchState struct CPUUniCore32State + +#include "qemu-common.h" +#include "cpu-qom.h" +#include "exec/cpu-defs.h" +#include "fpu/softfloat.h" + +#define NB_MMU_MODES 2 + +typedef struct CPUUniCore32State { + /* Regs for current mode. */ + uint32_t regs[32]; + /* Frequently accessed ASR bits are stored separately for efficiently. + This contains all the other bits. Use asr_{read,write} to access + the whole ASR. */ + uint32_t uncached_asr; + uint32_t bsr; + + /* Banked registers. */ + uint32_t banked_bsr[6]; + uint32_t banked_r29[6]; + uint32_t banked_r30[6]; + + /* asr flag cache for faster execution */ + uint32_t CF; /* 0 or 1 */ + uint32_t VF; /* V is the bit 31. All other bits are undefined */ + uint32_t NF; /* N is bit 31. All other bits are undefined. */ + uint32_t ZF; /* Z set if zero. */ + + /* System control coprocessor (cp0) */ + struct { + uint32_t c0_cpuid; + uint32_t c0_cachetype; + uint32_t c1_sys; /* System control register. */ + uint32_t c2_base; /* MMU translation table base. */ + uint32_t c3_faultstatus; /* Fault status registers. */ + uint32_t c4_faultaddr; /* Fault address registers. */ + uint32_t c5_cacheop; /* Cache operation registers. */ + uint32_t c6_tlbop; /* TLB operation registers. */ + } cp0; + + /* UniCore-F64 coprocessor state. */ + struct { + float64 regs[16]; + uint32_t xregs[32]; + float_status fp_status; + } ucf64; + + CPU_COMMON + + /* Internal CPU feature flags. */ + uint32_t features; + +} CPUUniCore32State; + +/** + * UniCore32CPU: + * @env: #CPUUniCore32State + * + * A UniCore32 CPU. + */ +struct UniCore32CPU { + /*< private >*/ + CPUState parent_obj; + /*< public >*/ + + CPUUniCore32State env; +}; + +static inline UniCore32CPU *uc32_env_get_cpu(CPUUniCore32State *env) +{ + return container_of(env, UniCore32CPU, env); +} + +#define ENV_GET_CPU(e) CPU(uc32_env_get_cpu(e)) + +#define ENV_OFFSET offsetof(UniCore32CPU, env) + +void uc32_cpu_do_interrupt(CPUState *cpu); +bool uc32_cpu_exec_interrupt(CPUState *cpu, int int_req); +void uc32_cpu_dump_state(CPUState *cpu, FILE *f, + fprintf_function cpu_fprintf, int flags); +hwaddr uc32_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr); + +#define ASR_M (0x1f) +#define ASR_MODE_USER (0x10) +#define ASR_MODE_INTR (0x12) +#define ASR_MODE_PRIV (0x13) +#define ASR_MODE_TRAP (0x17) +#define ASR_MODE_EXTN (0x1b) +#define ASR_MODE_SUSR (0x1f) +#define ASR_I (1 << 7) +#define ASR_V (1 << 28) +#define ASR_C (1 << 29) +#define ASR_Z (1 << 30) +#define ASR_N (1 << 31) +#define ASR_NZCV (ASR_N | ASR_Z | ASR_C | ASR_V) +#define ASR_RESERVED (~(ASR_M | ASR_I | ASR_NZCV)) + +#define UC32_EXCP_PRIV (1) +#define UC32_EXCP_ITRAP (2) +#define UC32_EXCP_DTRAP (3) +#define UC32_EXCP_INTR (4) + +/* Return the current ASR value. */ +target_ulong cpu_asr_read(CPUUniCore32State *env1); +/* Set the ASR. Note that some bits of mask must be all-set or all-clear. */ +void cpu_asr_write(CPUUniCore32State *env1, target_ulong val, target_ulong mask); + +/* UniCore-F64 system registers. */ +#define UC32_UCF64_FPSCR (31) +#define UCF64_FPSCR_MASK (0x27ffffff) +#define UCF64_FPSCR_RND_MASK (0x7) +#define UCF64_FPSCR_RND(r) (((r) >> 0) & UCF64_FPSCR_RND_MASK) +#define UCF64_FPSCR_TRAPEN_MASK (0x7f) +#define UCF64_FPSCR_TRAPEN(r) (((r) >> 10) & UCF64_FPSCR_TRAPEN_MASK) +#define UCF64_FPSCR_FLAG_MASK (0x3ff) +#define UCF64_FPSCR_FLAG(r) (((r) >> 17) & UCF64_FPSCR_FLAG_MASK) +#define UCF64_FPSCR_FLAG_ZERO (1 << 17) +#define UCF64_FPSCR_FLAG_INFINITY (1 << 18) +#define UCF64_FPSCR_FLAG_INVALID (1 << 19) +#define UCF64_FPSCR_FLAG_UNDERFLOW (1 << 20) +#define UCF64_FPSCR_FLAG_OVERFLOW (1 << 21) +#define UCF64_FPSCR_FLAG_INEXACT (1 << 22) +#define UCF64_FPSCR_FLAG_HUGEINT (1 << 23) +#define UCF64_FPSCR_FLAG_DENORMAL (1 << 24) +#define UCF64_FPSCR_FLAG_UNIMP (1 << 25) +#define UCF64_FPSCR_FLAG_DIVZERO (1 << 26) + +#define UC32_HWCAP_CMOV 4 /* 1 << 2 */ +#define UC32_HWCAP_UCF64 8 /* 1 << 3 */ + +#define cpu_signal_handler uc32_cpu_signal_handler + +int uc32_cpu_signal_handler(int host_signum, void *pinfo, void *puc); + +/* MMU modes definitions */ +#define MMU_MODE0_SUFFIX _kernel +#define MMU_MODE1_SUFFIX _user +#define MMU_USER_IDX 1 +static inline int cpu_mmu_index(CPUUniCore32State *env, bool ifetch) +{ + return (env->uncached_asr & ASR_M) == ASR_MODE_USER ? 1 : 0; +} + +#include "exec/cpu-all.h" + +UniCore32CPU *uc32_cpu_init(const char *cpu_model); + +#define cpu_init(cpu_model) CPU(uc32_cpu_init(cpu_model)) + +static inline void cpu_get_tb_cpu_state(CPUUniCore32State *env, target_ulong *pc, + target_ulong *cs_base, uint32_t *flags) +{ + *pc = env->regs[31]; + *cs_base = 0; + *flags = 0; + if ((env->uncached_asr & ASR_M) != ASR_MODE_USER) { + *flags |= (1 << 6); + } +} + +int uc32_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw, + int mmu_idx); +void uc32_translate_init(void); +void switch_mode(CPUUniCore32State *, int); + +#endif /* UNICORE32_CPU_H */ diff --git a/target/unicore32/helper.c b/target/unicore32/helper.c new file mode 100644 index 0000000000..d603bde237 --- /dev/null +++ b/target/unicore32/helper.c @@ -0,0 +1,263 @@ +/* + * Copyright (C) 2010-2012 Guan Xuetao + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Contributions from 2012-04-01 on are considered under GPL version 2, + * or (at your option) any later version. + */ + +#include "qemu/osdep.h" +#include "cpu.h" +#include "exec/exec-all.h" +#include "exec/gdbstub.h" +#include "exec/helper-proto.h" +#include "qemu/host-utils.h" +#ifndef CONFIG_USER_ONLY +#include "ui/console.h" +#endif + +#undef DEBUG_UC32 + +#ifdef DEBUG_UC32 +#define DPRINTF(fmt, ...) printf("%s: " fmt , __func__, ## __VA_ARGS__) +#else +#define DPRINTF(fmt, ...) do {} while (0) +#endif + +UniCore32CPU *uc32_cpu_init(const char *cpu_model) +{ + return UNICORE32_CPU(cpu_generic_init(TYPE_UNICORE32_CPU, cpu_model)); +} + +uint32_t HELPER(clo)(uint32_t x) +{ + return clo32(x); +} + +uint32_t HELPER(clz)(uint32_t x) +{ + return clz32(x); +} + +#ifndef CONFIG_USER_ONLY +void helper_cp0_set(CPUUniCore32State *env, uint32_t val, uint32_t creg, + uint32_t cop) +{ + UniCore32CPU *cpu = uc32_env_get_cpu(env); + + /* + * movc pp.nn, rn, #imm9 + * rn: UCOP_REG_D + * nn: UCOP_REG_N + * 1: sys control reg. + * 2: page table base reg. + * 3: data fault status reg. + * 4: insn fault status reg. + * 5: cache op. reg. + * 6: tlb op. reg. + * imm9: split UCOP_IMM10 with bit5 is 0 + */ + switch (creg) { + case 1: + if (cop != 0) { + goto unrecognized; + } + env->cp0.c1_sys = val; + break; + case 2: + if (cop != 0) { + goto unrecognized; + } + env->cp0.c2_base = val; + break; + case 3: + if (cop != 0) { + goto unrecognized; + } + env->cp0.c3_faultstatus = val; + break; + case 4: + if (cop != 0) { + goto unrecognized; + } + env->cp0.c4_faultaddr = val; + break; + case 5: + switch (cop) { + case 28: + DPRINTF("Invalidate Entire I&D cache\n"); + return; + case 20: + DPRINTF("Invalidate Entire Icache\n"); + return; + case 12: + DPRINTF("Invalidate Entire Dcache\n"); + return; + case 10: + DPRINTF("Clean Entire Dcache\n"); + return; + case 14: + DPRINTF("Flush Entire Dcache\n"); + return; + case 13: + DPRINTF("Invalidate Dcache line\n"); + return; + case 11: + DPRINTF("Clean Dcache line\n"); + return; + case 15: + DPRINTF("Flush Dcache line\n"); + return; + } + break; + case 6: + if ((cop <= 6) && (cop >= 2)) { + /* invalid all tlb */ + tlb_flush(CPU(cpu), 1); + return; + } + break; + default: + goto unrecognized; + } + return; +unrecognized: + DPRINTF("Wrong register (%d) or wrong operation (%d) in cp0_set!\n", + creg, cop); +} + +uint32_t helper_cp0_get(CPUUniCore32State *env, uint32_t creg, uint32_t cop) +{ + /* + * movc rd, pp.nn, #imm9 + * rd: UCOP_REG_D + * nn: UCOP_REG_N + * 0: cpuid and cachetype + * 1: sys control reg. + * 2: page table base reg. + * 3: data fault status reg. + * 4: insn fault status reg. + * imm9: split UCOP_IMM10 with bit5 is 0 + */ + switch (creg) { + case 0: + switch (cop) { + case 0: + return env->cp0.c0_cpuid; + case 1: + return env->cp0.c0_cachetype; + } + break; + case 1: + if (cop == 0) { + return env->cp0.c1_sys; + } + break; + case 2: + if (cop == 0) { + return env->cp0.c2_base; + } + break; + case 3: + if (cop == 0) { + return env->cp0.c3_faultstatus; + } + break; + case 4: + if (cop == 0) { + return env->cp0.c4_faultaddr; + } + break; + } + DPRINTF("Wrong register (%d) or wrong operation (%d) in cp0_set!\n", + creg, cop); + return 0; +} + +#ifdef CONFIG_CURSES +/* + * FIXME: + * 1. curses windows will be blank when switching back + * 2. backspace is not handled yet + */ +static void putc_on_screen(unsigned char ch) +{ + static WINDOW *localwin; + static int init; + + if (!init) { + /* Assume 80 * 30 screen to minimize the implementation */ + localwin = newwin(30, 80, 0, 0); + scrollok(localwin, TRUE); + init = TRUE; + } + + if (isprint(ch)) { + wprintw(localwin, "%c", ch); + } else { + switch (ch) { + case '\n': + wprintw(localwin, "%c", ch); + break; + case '\r': + /* If '\r' is put before '\n', the curses window will destroy the + * last print line. And meanwhile, '\n' implifies '\r' inside. */ + break; + default: /* Not handled, so just print it hex code */ + wprintw(localwin, "-- 0x%x --", ch); + } + } + + wrefresh(localwin); +} +#else +#define putc_on_screen(c) do { } while (0) +#endif + +void helper_cp1_putc(target_ulong x) +{ + putc_on_screen((unsigned char)x); /* Output to screen */ + DPRINTF("%c", x); /* Output to stdout */ +} +#endif + +#ifdef CONFIG_USER_ONLY +void switch_mode(CPUUniCore32State *env, int mode) +{ + UniCore32CPU *cpu = uc32_env_get_cpu(env); + + if (mode != ASR_MODE_USER) { + cpu_abort(CPU(cpu), "Tried to switch out of user mode\n"); + } +} + +void uc32_cpu_do_interrupt(CPUState *cs) +{ + cpu_abort(cs, "NO interrupt in user mode\n"); +} + +int uc32_cpu_handle_mmu_fault(CPUState *cs, vaddr address, + int access_type, int mmu_idx) +{ + cpu_abort(cs, "NO mmu fault in user mode\n"); + return 1; +} +#endif + +bool uc32_cpu_exec_interrupt(CPUState *cs, int interrupt_request) +{ + if (interrupt_request & CPU_INTERRUPT_HARD) { + UniCore32CPU *cpu = UNICORE32_CPU(cs); + CPUUniCore32State *env = &cpu->env; + + if (!(env->uncached_asr & ASR_I)) { + cs->exception_index = UC32_EXCP_INTR; + uc32_cpu_do_interrupt(cs); + return true; + } + } + return false; +} diff --git a/target/unicore32/helper.h b/target/unicore32/helper.h new file mode 100644 index 0000000000..941813749d --- /dev/null +++ b/target/unicore32/helper.h @@ -0,0 +1,65 @@ +/* + * Copyright (C) 2010-2012 Guan Xuetao + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation, or (at your option) any + * later version. See the COPYING file in the top-level directory. + */ + +#ifndef CONFIG_USER_ONLY +DEF_HELPER_4(cp0_set, void, env, i32, i32, i32) +DEF_HELPER_3(cp0_get, i32, env, i32, i32) +DEF_HELPER_1(cp1_putc, void, i32) +#endif + +DEF_HELPER_1(clz, i32, i32) +DEF_HELPER_1(clo, i32, i32) + +DEF_HELPER_2(exception, void, env, i32) + +DEF_HELPER_3(asr_write, void, env, i32, i32) +DEF_HELPER_1(asr_read, i32, env) + +DEF_HELPER_2(get_user_reg, i32, env, i32) +DEF_HELPER_3(set_user_reg, void, env, i32, i32) + +DEF_HELPER_3(add_cc, i32, env, i32, i32) +DEF_HELPER_3(adc_cc, i32, env, i32, i32) +DEF_HELPER_3(sub_cc, i32, env, i32, i32) +DEF_HELPER_3(sbc_cc, i32, env, i32, i32) + +DEF_HELPER_2(shl, i32, i32, i32) +DEF_HELPER_2(shr, i32, i32, i32) +DEF_HELPER_2(sar, i32, i32, 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_3(ror_cc, i32, env, i32, i32) + +DEF_HELPER_1(ucf64_get_fpscr, i32, env) +DEF_HELPER_2(ucf64_set_fpscr, void, env, i32) + +DEF_HELPER_3(ucf64_adds, f32, f32, f32, env) +DEF_HELPER_3(ucf64_addd, f64, f64, f64, env) +DEF_HELPER_3(ucf64_subs, f32, f32, f32, env) +DEF_HELPER_3(ucf64_subd, f64, f64, f64, env) +DEF_HELPER_3(ucf64_muls, f32, f32, f32, env) +DEF_HELPER_3(ucf64_muld, f64, f64, f64, env) +DEF_HELPER_3(ucf64_divs, f32, f32, f32, env) +DEF_HELPER_3(ucf64_divd, f64, f64, f64, env) +DEF_HELPER_1(ucf64_negs, f32, f32) +DEF_HELPER_1(ucf64_negd, f64, f64) +DEF_HELPER_1(ucf64_abss, f32, f32) +DEF_HELPER_1(ucf64_absd, f64, f64) +DEF_HELPER_4(ucf64_cmps, void, f32, f32, i32, env) +DEF_HELPER_4(ucf64_cmpd, void, f64, f64, i32, env) + +DEF_HELPER_2(ucf64_sf2df, f64, f32, env) +DEF_HELPER_2(ucf64_df2sf, f32, f64, env) + +DEF_HELPER_2(ucf64_si2sf, f32, f32, env) +DEF_HELPER_2(ucf64_si2df, f64, f32, env) + +DEF_HELPER_2(ucf64_sf2si, f32, f32, env) +DEF_HELPER_2(ucf64_df2si, f32, f64, env) diff --git a/target/unicore32/op_helper.c b/target/unicore32/op_helper.c new file mode 100644 index 0000000000..0872c29faa --- /dev/null +++ b/target/unicore32/op_helper.c @@ -0,0 +1,261 @@ +/* + * UniCore32 helper routines + * + * Copyright (C) 2010-2012 Guan Xuetao + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation, or (at your option) any + * later version. See the COPYING file in the top-level directory. + */ +#include "qemu/osdep.h" +#include "cpu.h" +#include "exec/helper-proto.h" +#include "exec/exec-all.h" +#include "exec/cpu_ldst.h" + +#define SIGNBIT (uint32_t)0x80000000 +#define SIGNBIT64 ((uint64_t)1 << 63) + +void HELPER(exception)(CPUUniCore32State *env, uint32_t excp) +{ + CPUState *cs = CPU(uc32_env_get_cpu(env)); + + cs->exception_index = excp; + cpu_loop_exit(cs); +} + +static target_ulong asr_read(CPUUniCore32State *env) +{ + int ZF; + ZF = (env->ZF == 0); + return env->uncached_asr | (env->NF & 0x80000000) | (ZF << 30) | + (env->CF << 29) | ((env->VF & 0x80000000) >> 3); +} + +target_ulong cpu_asr_read(CPUUniCore32State *env) +{ + return asr_read(env); +} + +target_ulong HELPER(asr_read)(CPUUniCore32State *env) +{ + return asr_read(env); +} + +static void asr_write(CPUUniCore32State *env, target_ulong val, + target_ulong mask) +{ + if (mask & ASR_NZCV) { + env->ZF = (~val) & ASR_Z; + env->NF = val; + env->CF = (val >> 29) & 1; + env->VF = (val << 3) & 0x80000000; + } + + if ((env->uncached_asr ^ val) & mask & ASR_M) { + switch_mode(env, val & ASR_M); + } + mask &= ~ASR_NZCV; + env->uncached_asr = (env->uncached_asr & ~mask) | (val & mask); +} + +void cpu_asr_write(CPUUniCore32State *env, target_ulong val, target_ulong mask) +{ + asr_write(env, val, mask); +} + +void HELPER(asr_write)(CPUUniCore32State *env, target_ulong val, + target_ulong mask) +{ + asr_write(env, val, mask); +} + +/* Access to user mode registers from privileged modes. */ +uint32_t HELPER(get_user_reg)(CPUUniCore32State *env, uint32_t regno) +{ + uint32_t val; + + if (regno == 29) { + val = env->banked_r29[0]; + } else if (regno == 30) { + val = env->banked_r30[0]; + } else { + val = env->regs[regno]; + } + return val; +} + +void HELPER(set_user_reg)(CPUUniCore32State *env, uint32_t regno, uint32_t val) +{ + if (regno == 29) { + env->banked_r29[0] = val; + } else if (regno == 30) { + env->banked_r30[0] = val; + } else { + env->regs[regno] = val; + } +} + +/* ??? Flag setting arithmetic is awkward because we need to do comparisons. + The only way to do that in TCG is a conditional branch, which clobbers + all our temporaries. For now implement these as helper functions. */ + +uint32_t HELPER(add_cc)(CPUUniCore32State *env, uint32_t a, uint32_t b) +{ + uint32_t result; + result = a + b; + env->NF = env->ZF = result; + env->CF = result < a; + env->VF = (a ^ b ^ -1) & (a ^ result); + return result; +} + +uint32_t HELPER(adc_cc)(CPUUniCore32State *env, uint32_t a, uint32_t b) +{ + uint32_t result; + if (!env->CF) { + result = a + b; + env->CF = result < a; + } else { + result = a + b + 1; + env->CF = result <= a; + } + env->VF = (a ^ b ^ -1) & (a ^ result); + env->NF = env->ZF = result; + return result; +} + +uint32_t HELPER(sub_cc)(CPUUniCore32State *env, uint32_t a, uint32_t b) +{ + uint32_t result; + result = a - b; + env->NF = env->ZF = result; + env->CF = a >= b; + env->VF = (a ^ b) & (a ^ result); + return result; +} + +uint32_t HELPER(sbc_cc)(CPUUniCore32State *env, uint32_t a, uint32_t b) +{ + uint32_t result; + if (!env->CF) { + result = a - b - 1; + env->CF = a > b; + } else { + result = a - b; + env->CF = a >= b; + } + env->VF = (a ^ b) & (a ^ result); + env->NF = env->ZF = result; + return result; +} + +/* Similarly for variable shift instructions. */ + +uint32_t HELPER(shl)(uint32_t x, uint32_t i) +{ + int shift = i & 0xff; + if (shift >= 32) { + return 0; + } + return x << shift; +} + +uint32_t HELPER(shr)(uint32_t x, uint32_t i) +{ + int shift = i & 0xff; + if (shift >= 32) { + return 0; + } + return (uint32_t)x >> shift; +} + +uint32_t HELPER(sar)(uint32_t x, uint32_t i) +{ + int shift = i & 0xff; + if (shift >= 32) { + shift = 31; + } + return (int32_t)x >> shift; +} + +uint32_t HELPER(shl_cc)(CPUUniCore32State *env, uint32_t x, uint32_t i) +{ + int shift = i & 0xff; + if (shift >= 32) { + if (shift == 32) { + env->CF = x & 1; + } else { + env->CF = 0; + } + return 0; + } else if (shift != 0) { + env->CF = (x >> (32 - shift)) & 1; + return x << shift; + } + return x; +} + +uint32_t HELPER(shr_cc)(CPUUniCore32State *env, uint32_t x, uint32_t i) +{ + int shift = i & 0xff; + if (shift >= 32) { + if (shift == 32) { + env->CF = (x >> 31) & 1; + } else { + env->CF = 0; + } + return 0; + } else if (shift != 0) { + env->CF = (x >> (shift - 1)) & 1; + return x >> shift; + } + return x; +} + +uint32_t HELPER(sar_cc)(CPUUniCore32State *env, uint32_t x, uint32_t i) +{ + int shift = i & 0xff; + if (shift >= 32) { + env->CF = (x >> 31) & 1; + return (int32_t)x >> 31; + } else if (shift != 0) { + env->CF = (x >> (shift - 1)) & 1; + return (int32_t)x >> shift; + } + return x; +} + +uint32_t HELPER(ror_cc)(CPUUniCore32State *env, uint32_t x, uint32_t i) +{ + int shift1, shift; + shift1 = i & 0xff; + shift = shift1 & 0x1f; + if (shift == 0) { + if (shift1 != 0) { + env->CF = (x >> 31) & 1; + } + return x; + } else { + env->CF = (x >> (shift - 1)) & 1; + return ((uint32_t)x >> shift) | (x << (32 - shift)); + } +} + +#ifndef CONFIG_USER_ONLY +void tlb_fill(CPUState *cs, target_ulong addr, MMUAccessType access_type, + int mmu_idx, uintptr_t retaddr) +{ + int ret; + + ret = uc32_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); + } +} +#endif diff --git a/target/unicore32/softmmu.c b/target/unicore32/softmmu.c new file mode 100644 index 0000000000..e7152e72e0 --- /dev/null +++ b/target/unicore32/softmmu.c @@ -0,0 +1,278 @@ +/* + * Softmmu related functions + * + * Copyright (C) 2010-2012 Guan Xuetao + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation, or any later version. + * See the COPYING file in the top-level directory. + */ +#ifdef CONFIG_USER_ONLY +#error This file only exist under softmmu circumstance +#endif + +#include "qemu/osdep.h" +#include "cpu.h" +#include "exec/exec-all.h" + +#undef DEBUG_UC32 + +#ifdef DEBUG_UC32 +#define DPRINTF(fmt, ...) printf("%s: " fmt , __func__, ## __VA_ARGS__) +#else +#define DPRINTF(fmt, ...) do {} while (0) +#endif + +#define SUPERPAGE_SIZE (1 << 22) +#define UC32_PAGETABLE_READ (1 << 8) +#define UC32_PAGETABLE_WRITE (1 << 7) +#define UC32_PAGETABLE_EXEC (1 << 6) +#define UC32_PAGETABLE_EXIST (1 << 2) +#define PAGETABLE_TYPE(x) ((x) & 3) + + +/* Map CPU modes onto saved register banks. */ +static inline int bank_number(CPUUniCore32State *env, int mode) +{ + UniCore32CPU *cpu = uc32_env_get_cpu(env); + + switch (mode) { + case ASR_MODE_USER: + case ASR_MODE_SUSR: + return 0; + case ASR_MODE_PRIV: + return 1; + case ASR_MODE_TRAP: + return 2; + case ASR_MODE_EXTN: + return 3; + case ASR_MODE_INTR: + return 4; + } + cpu_abort(CPU(cpu), "Bad mode %x\n", mode); + return -1; +} + +void switch_mode(CPUUniCore32State *env, int mode) +{ + int old_mode; + int i; + + old_mode = env->uncached_asr & ASR_M; + if (mode == old_mode) { + return; + } + + i = bank_number(env, old_mode); + env->banked_r29[i] = env->regs[29]; + env->banked_r30[i] = env->regs[30]; + env->banked_bsr[i] = env->bsr; + + i = bank_number(env, mode); + env->regs[29] = env->banked_r29[i]; + env->regs[30] = env->banked_r30[i]; + env->bsr = env->banked_bsr[i]; +} + +/* Handle a CPU exception. */ +void uc32_cpu_do_interrupt(CPUState *cs) +{ + UniCore32CPU *cpu = UNICORE32_CPU(cs); + CPUUniCore32State *env = &cpu->env; + uint32_t addr; + int new_mode; + + switch (cs->exception_index) { + case UC32_EXCP_PRIV: + new_mode = ASR_MODE_PRIV; + addr = 0x08; + break; + case UC32_EXCP_ITRAP: + DPRINTF("itrap happened at %x\n", env->regs[31]); + new_mode = ASR_MODE_TRAP; + addr = 0x0c; + break; + case UC32_EXCP_DTRAP: + DPRINTF("dtrap happened at %x\n", env->regs[31]); + new_mode = ASR_MODE_TRAP; + addr = 0x10; + break; + case UC32_EXCP_INTR: + new_mode = ASR_MODE_INTR; + addr = 0x18; + break; + default: + cpu_abort(cs, "Unhandled exception 0x%x\n", cs->exception_index); + return; + } + /* High vectors. */ + if (env->cp0.c1_sys & (1 << 13)) { + addr += 0xffff0000; + } + + switch_mode(env, new_mode); + env->bsr = cpu_asr_read(env); + env->uncached_asr = (env->uncached_asr & ~ASR_M) | new_mode; + env->uncached_asr |= ASR_I; + /* The PC already points to the proper instruction. */ + env->regs[30] = env->regs[31]; + env->regs[31] = addr; + cs->interrupt_request |= CPU_INTERRUPT_EXITTB; +} + +static int get_phys_addr_ucv2(CPUUniCore32State *env, uint32_t address, + int access_type, int is_user, uint32_t *phys_ptr, int *prot, + target_ulong *page_size) +{ + UniCore32CPU *cpu = uc32_env_get_cpu(env); + CPUState *cs = CPU(cpu); + int code; + uint32_t table; + uint32_t desc; + uint32_t phys_addr; + + /* Pagetable walk. */ + /* Lookup l1 descriptor. */ + table = env->cp0.c2_base & 0xfffff000; + table |= (address >> 20) & 0xffc; + desc = ldl_phys(cs->as, table); + code = 0; + switch (PAGETABLE_TYPE(desc)) { + case 3: + /* Superpage */ + if (!(desc & UC32_PAGETABLE_EXIST)) { + code = 0x0b; /* superpage miss */ + goto do_fault; + } + phys_addr = (desc & 0xffc00000) | (address & 0x003fffff); + *page_size = SUPERPAGE_SIZE; + break; + case 0: + /* Lookup l2 entry. */ + if (is_user) { + DPRINTF("PGD address %x, desc %x\n", table, desc); + } + if (!(desc & UC32_PAGETABLE_EXIST)) { + code = 0x05; /* second pagetable miss */ + goto do_fault; + } + table = (desc & 0xfffff000) | ((address >> 10) & 0xffc); + desc = ldl_phys(cs->as, table); + /* 4k page. */ + if (is_user) { + DPRINTF("PTE address %x, desc %x\n", table, desc); + } + if (!(desc & UC32_PAGETABLE_EXIST)) { + code = 0x08; /* page miss */ + goto do_fault; + } + switch (PAGETABLE_TYPE(desc)) { + case 0: + phys_addr = (desc & 0xfffff000) | (address & 0xfff); + *page_size = TARGET_PAGE_SIZE; + break; + default: + cpu_abort(CPU(cpu), "wrong page type!"); + } + break; + default: + cpu_abort(CPU(cpu), "wrong page type!"); + } + + *phys_ptr = phys_addr; + *prot = 0; + /* Check access permissions. */ + if (desc & UC32_PAGETABLE_READ) { + *prot |= PAGE_READ; + } else { + if (is_user && (access_type == 0)) { + code = 0x11; /* access unreadable area */ + goto do_fault; + } + } + + if (desc & UC32_PAGETABLE_WRITE) { + *prot |= PAGE_WRITE; + } else { + if (is_user && (access_type == 1)) { + code = 0x12; /* access unwritable area */ + goto do_fault; + } + } + + if (desc & UC32_PAGETABLE_EXEC) { + *prot |= PAGE_EXEC; + } else { + if (is_user && (access_type == 2)) { + code = 0x13; /* access unexecutable area */ + goto do_fault; + } + } + +do_fault: + return code; +} + +int uc32_cpu_handle_mmu_fault(CPUState *cs, vaddr address, + int access_type, int mmu_idx) +{ + UniCore32CPU *cpu = UNICORE32_CPU(cs); + CPUUniCore32State *env = &cpu->env; + uint32_t phys_addr; + target_ulong page_size; + int prot; + int ret, is_user; + + ret = 1; + is_user = mmu_idx == MMU_USER_IDX; + + if ((env->cp0.c1_sys & 1) == 0) { + /* MMU disabled. */ + phys_addr = address; + prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; + page_size = TARGET_PAGE_SIZE; + ret = 0; + } else { + if ((address & (1 << 31)) || (is_user)) { + ret = get_phys_addr_ucv2(env, address, access_type, is_user, + &phys_addr, &prot, &page_size); + if (is_user) { + DPRINTF("user space access: ret %x, address %" VADDR_PRIx ", " + "access_type %x, phys_addr %x, prot %x\n", + ret, address, access_type, phys_addr, prot); + } + } else { + /*IO memory */ + phys_addr = address | (1 << 31); + prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; + page_size = TARGET_PAGE_SIZE; + ret = 0; + } + } + + if (ret == 0) { + /* Map a single page. */ + phys_addr &= TARGET_PAGE_MASK; + address &= TARGET_PAGE_MASK; + tlb_set_page(cs, address, phys_addr, prot, mmu_idx, page_size); + return 0; + } + + env->cp0.c3_faultstatus = ret; + env->cp0.c4_faultaddr = address; + if (access_type == 2) { + cs->exception_index = UC32_EXCP_ITRAP; + } else { + cs->exception_index = UC32_EXCP_DTRAP; + } + return ret; +} + +hwaddr uc32_cpu_get_phys_page_debug(CPUState *cs, vaddr addr) +{ + UniCore32CPU *cpu = UNICORE32_CPU(cs); + + cpu_abort(CPU(cpu), "%s not supported yet\n", __func__); + return addr; +} diff --git a/target/unicore32/translate.c b/target/unicore32/translate.c new file mode 100644 index 0000000000..514d460408 --- /dev/null +++ b/target/unicore32/translate.c @@ -0,0 +1,2111 @@ +/* + * UniCore32 translation + * + * Copyright (C) 2010-2012 Guan Xuetao + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation, or (at your option) any + * later version. See the COPYING file in the top-level directory. + */ +#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" + + +/* internal defines */ +typedef struct DisasContext { + target_ulong pc; + int is_jmp; + /* Nonzero if this instruction has been conditionally skipped. */ + int condjmp; + /* The label that will be jumped to when the instruction is skipped. */ + TCGLabel *condlabel; + struct TranslationBlock *tb; + int singlestep_enabled; +#ifndef CONFIG_USER_ONLY + int user; +#endif +} DisasContext; + +#ifndef CONFIG_USER_ONLY +#define IS_USER(s) (s->user) +#else +#define IS_USER(s) 1 +#endif + +/* These instructions trap after executing, so defer them until after the + conditional executions state has been updated. */ +#define DISAS_SYSCALL 5 + +static TCGv_env cpu_env; +static TCGv_i32 cpu_R[32]; + +/* FIXME: These should be removed. */ +static TCGv cpu_F0s, cpu_F1s; +static TCGv_i64 cpu_F0d, cpu_F1d; + +#include "exec/gen-icount.h" + +static const char *regnames[] = { + "r00", "r01", "r02", "r03", "r04", "r05", "r06", "r07", + "r08", "r09", "r10", "r11", "r12", "r13", "r14", "r15", + "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", + "r24", "r25", "r26", "r27", "r28", "r29", "r30", "pc" }; + +/* initialize TCG globals. */ +void uc32_translate_init(void) +{ + int i; + + cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env"); + tcg_ctx.tcg_env = cpu_env; + + for (i = 0; i < 32; i++) { + cpu_R[i] = tcg_global_mem_new_i32(cpu_env, + offsetof(CPUUniCore32State, regs[i]), regnames[i]); + } +} + +static int num_temps; + +/* Allocate a temporary variable. */ +static TCGv_i32 new_tmp(void) +{ + num_temps++; + return tcg_temp_new_i32(); +} + +/* Release a temporary variable. */ +static void dead_tmp(TCGv tmp) +{ + tcg_temp_free(tmp); + num_temps--; +} + +static inline TCGv load_cpu_offset(int offset) +{ + TCGv tmp = new_tmp(); + tcg_gen_ld_i32(tmp, cpu_env, offset); + return tmp; +} + +#define load_cpu_field(name) load_cpu_offset(offsetof(CPUUniCore32State, name)) + +static inline void store_cpu_offset(TCGv var, int offset) +{ + tcg_gen_st_i32(var, cpu_env, offset); + dead_tmp(var); +} + +#define store_cpu_field(var, name) \ + store_cpu_offset(var, offsetof(CPUUniCore32State, name)) + +/* Set a variable to the value of a CPU register. */ +static void load_reg_var(DisasContext *s, TCGv var, int reg) +{ + if (reg == 31) { + uint32_t addr; + /* normaly, since we updated PC */ + addr = (long)s->pc; + tcg_gen_movi_i32(var, addr); + } else { + tcg_gen_mov_i32(var, cpu_R[reg]); + } +} + +/* Create a new temporary and set it to the value of a CPU register. */ +static inline TCGv load_reg(DisasContext *s, int reg) +{ + TCGv tmp = new_tmp(); + load_reg_var(s, tmp, reg); + return tmp; +} + +/* Set a CPU register. The source must be a temporary and will be + marked as dead. */ +static void store_reg(DisasContext *s, int reg, TCGv var) +{ + if (reg == 31) { + tcg_gen_andi_i32(var, var, ~3); + s->is_jmp = DISAS_JUMP; + } + tcg_gen_mov_i32(cpu_R[reg], var); + dead_tmp(var); +} + +/* Value extensions. */ +#define gen_uxtb(var) tcg_gen_ext8u_i32(var, var) +#define gen_uxth(var) tcg_gen_ext16u_i32(var, var) +#define gen_sxtb(var) tcg_gen_ext8s_i32(var, var) +#define gen_sxth(var) tcg_gen_ext16s_i32(var, var) + +#define UCOP_REG_M (((insn) >> 0) & 0x1f) +#define UCOP_REG_N (((insn) >> 19) & 0x1f) +#define UCOP_REG_D (((insn) >> 14) & 0x1f) +#define UCOP_REG_S (((insn) >> 9) & 0x1f) +#define UCOP_REG_LO (((insn) >> 14) & 0x1f) +#define UCOP_REG_HI (((insn) >> 9) & 0x1f) +#define UCOP_SH_OP (((insn) >> 6) & 0x03) +#define UCOP_SH_IM (((insn) >> 9) & 0x1f) +#define UCOP_OPCODES (((insn) >> 25) & 0x0f) +#define UCOP_IMM_9 (((insn) >> 0) & 0x1ff) +#define UCOP_IMM10 (((insn) >> 0) & 0x3ff) +#define UCOP_IMM14 (((insn) >> 0) & 0x3fff) +#define UCOP_COND (((insn) >> 25) & 0x0f) +#define UCOP_CMOV_COND (((insn) >> 19) & 0x0f) +#define UCOP_CPNUM (((insn) >> 10) & 0x0f) +#define UCOP_UCF64_FMT (((insn) >> 24) & 0x03) +#define UCOP_UCF64_FUNC (((insn) >> 6) & 0x0f) +#define UCOP_UCF64_COND (((insn) >> 6) & 0x0f) + +#define UCOP_SET(i) ((insn) & (1 << (i))) +#define UCOP_SET_P UCOP_SET(28) +#define UCOP_SET_U UCOP_SET(27) +#define UCOP_SET_B UCOP_SET(26) +#define UCOP_SET_W UCOP_SET(25) +#define UCOP_SET_L UCOP_SET(24) +#define UCOP_SET_S UCOP_SET(24) + +#define ILLEGAL cpu_abort(CPU(cpu), \ + "Illegal UniCore32 instruction %x at line %d!", \ + insn, __LINE__) + +#ifndef CONFIG_USER_ONLY +static void disas_cp0_insn(CPUUniCore32State *env, DisasContext *s, + uint32_t insn) +{ + UniCore32CPU *cpu = uc32_env_get_cpu(env); + TCGv tmp, tmp2, tmp3; + if ((insn & 0xfe000000) == 0xe0000000) { + tmp2 = new_tmp(); + tmp3 = new_tmp(); + tcg_gen_movi_i32(tmp2, UCOP_REG_N); + tcg_gen_movi_i32(tmp3, UCOP_IMM10); + if (UCOP_SET_L) { + tmp = new_tmp(); + gen_helper_cp0_get(tmp, cpu_env, tmp2, tmp3); + store_reg(s, UCOP_REG_D, tmp); + } else { + tmp = load_reg(s, UCOP_REG_D); + gen_helper_cp0_set(cpu_env, tmp, tmp2, tmp3); + dead_tmp(tmp); + } + dead_tmp(tmp2); + dead_tmp(tmp3); + return; + } + ILLEGAL; +} + +static void disas_ocd_insn(CPUUniCore32State *env, DisasContext *s, + uint32_t insn) +{ + UniCore32CPU *cpu = uc32_env_get_cpu(env); + TCGv tmp; + + if ((insn & 0xff003fff) == 0xe1000400) { + /* + * movc rd, pp.nn, #imm9 + * rd: UCOP_REG_D + * nn: UCOP_REG_N (must be 0) + * imm9: 0 + */ + if (UCOP_REG_N == 0) { + tmp = new_tmp(); + tcg_gen_movi_i32(tmp, 0); + store_reg(s, UCOP_REG_D, tmp); + return; + } else { + ILLEGAL; + } + } + if ((insn & 0xff003fff) == 0xe0000401) { + /* + * movc pp.nn, rn, #imm9 + * rn: UCOP_REG_D + * nn: UCOP_REG_N (must be 1) + * imm9: 1 + */ + if (UCOP_REG_N == 1) { + tmp = load_reg(s, UCOP_REG_D); + gen_helper_cp1_putc(tmp); + dead_tmp(tmp); + return; + } else { + ILLEGAL; + } + } + ILLEGAL; +} +#endif + +static inline void gen_set_asr(TCGv var, uint32_t mask) +{ + TCGv tmp_mask = tcg_const_i32(mask); + gen_helper_asr_write(cpu_env, var, tmp_mask); + tcg_temp_free_i32(tmp_mask); +} +/* Set NZCV flags from the high 4 bits of var. */ +#define gen_set_nzcv(var) gen_set_asr(var, ASR_NZCV) + +static void gen_exception(int excp) +{ + TCGv tmp = new_tmp(); + tcg_gen_movi_i32(tmp, excp); + gen_helper_exception(cpu_env, tmp); + dead_tmp(tmp); +} + +#define gen_set_CF(var) tcg_gen_st_i32(var, cpu_env, offsetof(CPUUniCore32State, CF)) + +/* Set CF to the top bit of var. */ +static void gen_set_CF_bit31(TCGv var) +{ + TCGv tmp = new_tmp(); + tcg_gen_shri_i32(tmp, var, 31); + gen_set_CF(tmp); + dead_tmp(tmp); +} + +/* Set N and Z flags from var. */ +static inline void gen_logic_CC(TCGv var) +{ + tcg_gen_st_i32(var, cpu_env, offsetof(CPUUniCore32State, NF)); + tcg_gen_st_i32(var, cpu_env, offsetof(CPUUniCore32State, ZF)); +} + +/* dest = T0 + T1 + CF. */ +static void gen_add_carry(TCGv dest, TCGv t0, TCGv t1) +{ + TCGv tmp; + tcg_gen_add_i32(dest, t0, t1); + tmp = load_cpu_field(CF); + tcg_gen_add_i32(dest, dest, tmp); + dead_tmp(tmp); +} + +/* dest = T0 - T1 + CF - 1. */ +static void gen_sub_carry(TCGv dest, TCGv t0, TCGv t1) +{ + TCGv tmp; + tcg_gen_sub_i32(dest, t0, t1); + tmp = load_cpu_field(CF); + tcg_gen_add_i32(dest, dest, tmp); + tcg_gen_subi_i32(dest, dest, 1); + dead_tmp(tmp); +} + +static void shifter_out_im(TCGv var, int shift) +{ + TCGv tmp = new_tmp(); + if (shift == 0) { + tcg_gen_andi_i32(tmp, var, 1); + } else { + tcg_gen_shri_i32(tmp, var, shift); + if (shift != 31) { + tcg_gen_andi_i32(tmp, tmp, 1); + } + } + gen_set_CF(tmp); + dead_tmp(tmp); +} + +/* Shift by immediate. Includes special handling for shift == 0. */ +static inline void gen_uc32_shift_im(TCGv var, int shiftop, int shift, + int flags) +{ + switch (shiftop) { + case 0: /* LSL */ + if (shift != 0) { + if (flags) { + shifter_out_im(var, 32 - shift); + } + tcg_gen_shli_i32(var, var, shift); + } + break; + case 1: /* LSR */ + if (shift == 0) { + if (flags) { + tcg_gen_shri_i32(var, var, 31); + gen_set_CF(var); + } + tcg_gen_movi_i32(var, 0); + } else { + if (flags) { + shifter_out_im(var, shift - 1); + } + tcg_gen_shri_i32(var, var, shift); + } + break; + case 2: /* ASR */ + if (shift == 0) { + shift = 32; + } + if (flags) { + shifter_out_im(var, shift - 1); + } + if (shift == 32) { + shift = 31; + } + tcg_gen_sari_i32(var, var, shift); + break; + case 3: /* ROR/RRX */ + if (shift != 0) { + if (flags) { + shifter_out_im(var, shift - 1); + } + tcg_gen_rotri_i32(var, var, shift); break; + } else { + TCGv tmp = load_cpu_field(CF); + if (flags) { + shifter_out_im(var, 0); + } + tcg_gen_shri_i32(var, var, 1); + tcg_gen_shli_i32(tmp, tmp, 31); + tcg_gen_or_i32(var, var, tmp); + dead_tmp(tmp); + } + } +}; + +static inline void gen_uc32_shift_reg(TCGv var, int shiftop, + TCGv shift, int flags) +{ + if (flags) { + switch (shiftop) { + case 0: + gen_helper_shl_cc(var, cpu_env, var, shift); + break; + case 1: + gen_helper_shr_cc(var, cpu_env, var, shift); + break; + case 2: + gen_helper_sar_cc(var, cpu_env, var, shift); + break; + case 3: + gen_helper_ror_cc(var, cpu_env, var, shift); + break; + } + } else { + switch (shiftop) { + case 0: + gen_helper_shl(var, var, shift); + break; + case 1: + gen_helper_shr(var, var, shift); + break; + case 2: + gen_helper_sar(var, var, shift); + break; + case 3: + tcg_gen_andi_i32(shift, shift, 0x1f); + tcg_gen_rotr_i32(var, var, shift); + break; + } + } + dead_tmp(shift); +} + +static void gen_test_cc(int cc, TCGLabel *label) +{ + TCGv tmp; + TCGv tmp2; + TCGLabel *inv; + + switch (cc) { + case 0: /* eq: Z */ + tmp = load_cpu_field(ZF); + tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, label); + break; + case 1: /* ne: !Z */ + tmp = load_cpu_field(ZF); + tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, label); + break; + case 2: /* cs: C */ + tmp = load_cpu_field(CF); + tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, label); + break; + case 3: /* cc: !C */ + tmp = load_cpu_field(CF); + tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, label); + break; + case 4: /* mi: N */ + tmp = load_cpu_field(NF); + tcg_gen_brcondi_i32(TCG_COND_LT, tmp, 0, label); + break; + case 5: /* pl: !N */ + tmp = load_cpu_field(NF); + tcg_gen_brcondi_i32(TCG_COND_GE, tmp, 0, label); + break; + case 6: /* vs: V */ + tmp = load_cpu_field(VF); + tcg_gen_brcondi_i32(TCG_COND_LT, tmp, 0, label); + break; + case 7: /* vc: !V */ + tmp = load_cpu_field(VF); + tcg_gen_brcondi_i32(TCG_COND_GE, tmp, 0, label); + break; + case 8: /* hi: C && !Z */ + inv = gen_new_label(); + tmp = load_cpu_field(CF); + tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, inv); + dead_tmp(tmp); + tmp = load_cpu_field(ZF); + tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, label); + gen_set_label(inv); + break; + case 9: /* ls: !C || Z */ + tmp = load_cpu_field(CF); + tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, label); + dead_tmp(tmp); + tmp = load_cpu_field(ZF); + tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, label); + break; + case 10: /* ge: N == V -> N ^ V == 0 */ + tmp = load_cpu_field(VF); + tmp2 = load_cpu_field(NF); + tcg_gen_xor_i32(tmp, tmp, tmp2); + dead_tmp(tmp2); + tcg_gen_brcondi_i32(TCG_COND_GE, tmp, 0, label); + break; + case 11: /* lt: N != V -> N ^ V != 0 */ + tmp = load_cpu_field(VF); + tmp2 = load_cpu_field(NF); + tcg_gen_xor_i32(tmp, tmp, tmp2); + dead_tmp(tmp2); + tcg_gen_brcondi_i32(TCG_COND_LT, tmp, 0, label); + break; + case 12: /* gt: !Z && N == V */ + inv = gen_new_label(); + tmp = load_cpu_field(ZF); + tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, inv); + dead_tmp(tmp); + tmp = load_cpu_field(VF); + tmp2 = load_cpu_field(NF); + tcg_gen_xor_i32(tmp, tmp, tmp2); + dead_tmp(tmp2); + tcg_gen_brcondi_i32(TCG_COND_GE, tmp, 0, label); + gen_set_label(inv); + break; + case 13: /* le: Z || N != V */ + tmp = load_cpu_field(ZF); + tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, label); + dead_tmp(tmp); + tmp = load_cpu_field(VF); + tmp2 = load_cpu_field(NF); + tcg_gen_xor_i32(tmp, tmp, tmp2); + dead_tmp(tmp2); + tcg_gen_brcondi_i32(TCG_COND_LT, tmp, 0, label); + break; + default: + fprintf(stderr, "Bad condition code 0x%x\n", cc); + abort(); + } + dead_tmp(tmp); +} + +static const uint8_t table_logic_cc[16] = { + 1, /* and */ 1, /* xor */ 0, /* sub */ 0, /* rsb */ + 0, /* add */ 0, /* adc */ 0, /* sbc */ 0, /* rsc */ + 1, /* andl */ 1, /* xorl */ 0, /* cmp */ 0, /* cmn */ + 1, /* orr */ 1, /* mov */ 1, /* bic */ 1, /* mvn */ +}; + +/* Set PC state from an immediate address. */ +static inline void gen_bx_im(DisasContext *s, uint32_t addr) +{ + s->is_jmp = DISAS_UPDATE; + tcg_gen_movi_i32(cpu_R[31], addr & ~3); +} + +/* Set PC state from var. var is marked as dead. */ +static inline void gen_bx(DisasContext *s, TCGv var) +{ + s->is_jmp = DISAS_UPDATE; + tcg_gen_andi_i32(cpu_R[31], var, ~3); + dead_tmp(var); +} + +static inline void store_reg_bx(DisasContext *s, int reg, TCGv var) +{ + store_reg(s, reg, var); +} + +static inline TCGv gen_ld8s(TCGv addr, int index) +{ + TCGv tmp = new_tmp(); + tcg_gen_qemu_ld8s(tmp, addr, index); + return tmp; +} + +static inline TCGv gen_ld8u(TCGv addr, int index) +{ + TCGv tmp = new_tmp(); + tcg_gen_qemu_ld8u(tmp, addr, index); + return tmp; +} + +static inline TCGv gen_ld16s(TCGv addr, int index) +{ + TCGv tmp = new_tmp(); + tcg_gen_qemu_ld16s(tmp, addr, index); + return tmp; +} + +static inline TCGv gen_ld16u(TCGv addr, int index) +{ + TCGv tmp = new_tmp(); + tcg_gen_qemu_ld16u(tmp, addr, index); + return tmp; +} + +static inline TCGv gen_ld32(TCGv addr, int index) +{ + TCGv tmp = new_tmp(); + tcg_gen_qemu_ld32u(tmp, addr, index); + return tmp; +} + +static inline void gen_st8(TCGv val, TCGv addr, int index) +{ + tcg_gen_qemu_st8(val, addr, index); + dead_tmp(val); +} + +static inline void gen_st16(TCGv val, TCGv addr, int index) +{ + tcg_gen_qemu_st16(val, addr, index); + dead_tmp(val); +} + +static inline void gen_st32(TCGv val, TCGv addr, int index) +{ + tcg_gen_qemu_st32(val, addr, index); + dead_tmp(val); +} + +static inline void gen_set_pc_im(uint32_t val) +{ + tcg_gen_movi_i32(cpu_R[31], val); +} + +/* Force a TB lookup after an instruction that changes the CPU state. */ +static inline void gen_lookup_tb(DisasContext *s) +{ + tcg_gen_movi_i32(cpu_R[31], s->pc & ~1); + s->is_jmp = DISAS_UPDATE; +} + +static inline void gen_add_data_offset(DisasContext *s, unsigned int insn, + TCGv var) +{ + int val; + TCGv offset; + + if (UCOP_SET(29)) { + /* immediate */ + val = UCOP_IMM14; + if (!UCOP_SET_U) { + val = -val; + } + if (val != 0) { + tcg_gen_addi_i32(var, var, val); + } + } else { + /* shift/register */ + offset = load_reg(s, UCOP_REG_M); + gen_uc32_shift_im(offset, UCOP_SH_OP, UCOP_SH_IM, 0); + if (!UCOP_SET_U) { + tcg_gen_sub_i32(var, var, offset); + } else { + tcg_gen_add_i32(var, var, offset); + } + dead_tmp(offset); + } +} + +static inline void gen_add_datah_offset(DisasContext *s, unsigned int insn, + TCGv var) +{ + int val; + TCGv offset; + + if (UCOP_SET(26)) { + /* immediate */ + val = (insn & 0x1f) | ((insn >> 4) & 0x3e0); + if (!UCOP_SET_U) { + val = -val; + } + if (val != 0) { + tcg_gen_addi_i32(var, var, val); + } + } else { + /* register */ + offset = load_reg(s, UCOP_REG_M); + if (!UCOP_SET_U) { + tcg_gen_sub_i32(var, var, offset); + } else { + tcg_gen_add_i32(var, var, offset); + } + dead_tmp(offset); + } +} + +static inline long ucf64_reg_offset(int reg) +{ + if (reg & 1) { + return offsetof(CPUUniCore32State, ucf64.regs[reg >> 1]) + + offsetof(CPU_DoubleU, l.upper); + } else { + return offsetof(CPUUniCore32State, ucf64.regs[reg >> 1]) + + offsetof(CPU_DoubleU, l.lower); + } +} + +#define ucf64_gen_ld32(reg) load_cpu_offset(ucf64_reg_offset(reg)) +#define ucf64_gen_st32(var, reg) store_cpu_offset(var, ucf64_reg_offset(reg)) + +/* UniCore-F64 single load/store I_offset */ +static void do_ucf64_ldst_i(CPUUniCore32State *env, DisasContext *s, uint32_t insn) +{ + UniCore32CPU *cpu = uc32_env_get_cpu(env); + int offset; + TCGv tmp; + TCGv addr; + + addr = load_reg(s, UCOP_REG_N); + if (!UCOP_SET_P && !UCOP_SET_W) { + ILLEGAL; + } + + if (UCOP_SET_P) { + offset = UCOP_IMM10 << 2; + if (!UCOP_SET_U) { + offset = -offset; + } + if (offset != 0) { + tcg_gen_addi_i32(addr, addr, offset); + } + } + + if (UCOP_SET_L) { /* load */ + tmp = gen_ld32(addr, IS_USER(s)); + ucf64_gen_st32(tmp, UCOP_REG_D); + } else { /* store */ + tmp = ucf64_gen_ld32(UCOP_REG_D); + gen_st32(tmp, addr, IS_USER(s)); + } + + if (!UCOP_SET_P) { + offset = UCOP_IMM10 << 2; + if (!UCOP_SET_U) { + offset = -offset; + } + if (offset != 0) { + tcg_gen_addi_i32(addr, addr, offset); + } + } + if (UCOP_SET_W) { + store_reg(s, UCOP_REG_N, addr); + } else { + dead_tmp(addr); + } +} + +/* UniCore-F64 load/store multiple words */ +static void do_ucf64_ldst_m(CPUUniCore32State *env, DisasContext *s, uint32_t insn) +{ + UniCore32CPU *cpu = uc32_env_get_cpu(env); + unsigned int i; + int j, n, freg; + TCGv tmp; + TCGv addr; + + if (UCOP_REG_D != 0) { + ILLEGAL; + } + if (UCOP_REG_N == 31) { + ILLEGAL; + } + if ((insn << 24) == 0) { + ILLEGAL; + } + + addr = load_reg(s, UCOP_REG_N); + + n = 0; + for (i = 0; i < 8; i++) { + if (UCOP_SET(i)) { + n++; + } + } + + if (UCOP_SET_U) { + if (UCOP_SET_P) { /* pre increment */ + tcg_gen_addi_i32(addr, addr, 4); + } /* unnecessary to do anything when post increment */ + } else { + if (UCOP_SET_P) { /* pre decrement */ + tcg_gen_addi_i32(addr, addr, -(n * 4)); + } else { /* post decrement */ + if (n != 1) { + tcg_gen_addi_i32(addr, addr, -((n - 1) * 4)); + } + } + } + + freg = ((insn >> 8) & 3) << 3; /* freg should be 0, 8, 16, 24 */ + + for (i = 0, j = 0; i < 8; i++, freg++) { + if (!UCOP_SET(i)) { + continue; + } + + if (UCOP_SET_L) { /* load */ + tmp = gen_ld32(addr, IS_USER(s)); + ucf64_gen_st32(tmp, freg); + } else { /* store */ + tmp = ucf64_gen_ld32(freg); + gen_st32(tmp, addr, IS_USER(s)); + } + + j++; + /* unnecessary to add after the last transfer */ + if (j != n) { + tcg_gen_addi_i32(addr, addr, 4); + } + } + + if (UCOP_SET_W) { /* write back */ + if (UCOP_SET_U) { + if (!UCOP_SET_P) { /* post increment */ + tcg_gen_addi_i32(addr, addr, 4); + } /* unnecessary to do anything when pre increment */ + } else { + if (UCOP_SET_P) { + /* pre decrement */ + if (n != 1) { + tcg_gen_addi_i32(addr, addr, -((n - 1) * 4)); + } + } else { + /* post decrement */ + tcg_gen_addi_i32(addr, addr, -(n * 4)); + } + } + store_reg(s, UCOP_REG_N, addr); + } else { + dead_tmp(addr); + } +} + +/* UniCore-F64 mrc/mcr */ +static void do_ucf64_trans(CPUUniCore32State *env, DisasContext *s, uint32_t insn) +{ + UniCore32CPU *cpu = uc32_env_get_cpu(env); + TCGv tmp; + + if ((insn & 0xfe0003ff) == 0xe2000000) { + /* control register */ + if ((UCOP_REG_N != UC32_UCF64_FPSCR) || (UCOP_REG_D == 31)) { + ILLEGAL; + } + if (UCOP_SET(24)) { + /* CFF */ + tmp = new_tmp(); + gen_helper_ucf64_get_fpscr(tmp, cpu_env); + store_reg(s, UCOP_REG_D, tmp); + } else { + /* CTF */ + tmp = load_reg(s, UCOP_REG_D); + gen_helper_ucf64_set_fpscr(cpu_env, tmp); + dead_tmp(tmp); + gen_lookup_tb(s); + } + return; + } + if ((insn & 0xfe0003ff) == 0xe0000000) { + /* general register */ + if (UCOP_REG_D == 31) { + ILLEGAL; + } + if (UCOP_SET(24)) { /* MFF */ + tmp = ucf64_gen_ld32(UCOP_REG_N); + store_reg(s, UCOP_REG_D, tmp); + } else { /* MTF */ + tmp = load_reg(s, UCOP_REG_D); + ucf64_gen_st32(tmp, UCOP_REG_N); + } + return; + } + if ((insn & 0xfb000000) == 0xe9000000) { + /* MFFC */ + if (UCOP_REG_D != 31) { + ILLEGAL; + } + if (UCOP_UCF64_COND & 0x8) { + ILLEGAL; + } + + tmp = new_tmp(); + tcg_gen_movi_i32(tmp, UCOP_UCF64_COND); + if (UCOP_SET(26)) { + tcg_gen_ld_i64(cpu_F0d, cpu_env, ucf64_reg_offset(UCOP_REG_N)); + tcg_gen_ld_i64(cpu_F1d, cpu_env, ucf64_reg_offset(UCOP_REG_M)); + gen_helper_ucf64_cmpd(cpu_F0d, cpu_F1d, tmp, cpu_env); + } else { + tcg_gen_ld_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_N)); + tcg_gen_ld_i32(cpu_F1s, cpu_env, ucf64_reg_offset(UCOP_REG_M)); + gen_helper_ucf64_cmps(cpu_F0s, cpu_F1s, tmp, cpu_env); + } + dead_tmp(tmp); + return; + } + ILLEGAL; +} + +/* UniCore-F64 convert instructions */ +static void do_ucf64_fcvt(CPUUniCore32State *env, DisasContext *s, uint32_t insn) +{ + UniCore32CPU *cpu = uc32_env_get_cpu(env); + + if (UCOP_UCF64_FMT == 3) { + ILLEGAL; + } + if (UCOP_REG_N != 0) { + ILLEGAL; + } + switch (UCOP_UCF64_FUNC) { + case 0: /* cvt.s */ + switch (UCOP_UCF64_FMT) { + case 1 /* d */: + tcg_gen_ld_i64(cpu_F0d, cpu_env, ucf64_reg_offset(UCOP_REG_M)); + gen_helper_ucf64_df2sf(cpu_F0s, cpu_F0d, cpu_env); + tcg_gen_st_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_D)); + break; + case 2 /* w */: + tcg_gen_ld_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_M)); + gen_helper_ucf64_si2sf(cpu_F0s, cpu_F0s, cpu_env); + tcg_gen_st_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_D)); + break; + default /* s */: + ILLEGAL; + break; + } + break; + case 1: /* cvt.d */ + switch (UCOP_UCF64_FMT) { + case 0 /* s */: + tcg_gen_ld_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_M)); + gen_helper_ucf64_sf2df(cpu_F0d, cpu_F0s, cpu_env); + tcg_gen_st_i64(cpu_F0d, cpu_env, ucf64_reg_offset(UCOP_REG_D)); + break; + case 2 /* w */: + tcg_gen_ld_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_M)); + gen_helper_ucf64_si2df(cpu_F0d, cpu_F0s, cpu_env); + tcg_gen_st_i64(cpu_F0d, cpu_env, ucf64_reg_offset(UCOP_REG_D)); + break; + default /* d */: + ILLEGAL; + break; + } + break; + case 4: /* cvt.w */ + switch (UCOP_UCF64_FMT) { + case 0 /* s */: + tcg_gen_ld_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_M)); + gen_helper_ucf64_sf2si(cpu_F0s, cpu_F0s, cpu_env); + tcg_gen_st_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_D)); + break; + case 1 /* d */: + tcg_gen_ld_i64(cpu_F0d, cpu_env, ucf64_reg_offset(UCOP_REG_M)); + gen_helper_ucf64_df2si(cpu_F0s, cpu_F0d, cpu_env); + tcg_gen_st_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_D)); + break; + default /* w */: + ILLEGAL; + break; + } + break; + default: + ILLEGAL; + } +} + +/* UniCore-F64 compare instructions */ +static void do_ucf64_fcmp(CPUUniCore32State *env, DisasContext *s, uint32_t insn) +{ + UniCore32CPU *cpu = uc32_env_get_cpu(env); + + if (UCOP_SET(25)) { + ILLEGAL; + } + if (UCOP_REG_D != 0) { + ILLEGAL; + } + + ILLEGAL; /* TODO */ + if (UCOP_SET(24)) { + tcg_gen_ld_i64(cpu_F0d, cpu_env, ucf64_reg_offset(UCOP_REG_N)); + tcg_gen_ld_i64(cpu_F1d, cpu_env, ucf64_reg_offset(UCOP_REG_M)); + /* gen_helper_ucf64_cmpd(cpu_F0d, cpu_F1d, cpu_env); */ + } else { + tcg_gen_ld_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_N)); + tcg_gen_ld_i32(cpu_F1s, cpu_env, ucf64_reg_offset(UCOP_REG_M)); + /* gen_helper_ucf64_cmps(cpu_F0s, cpu_F1s, cpu_env); */ + } +} + +#define gen_helper_ucf64_movs(x, y) do { } while (0) +#define gen_helper_ucf64_movd(x, y) do { } while (0) + +#define UCF64_OP1(name) do { \ + if (UCOP_REG_N != 0) { \ + ILLEGAL; \ + } \ + switch (UCOP_UCF64_FMT) { \ + case 0 /* s */: \ + tcg_gen_ld_i32(cpu_F0s, cpu_env, \ + ucf64_reg_offset(UCOP_REG_M)); \ + gen_helper_ucf64_##name##s(cpu_F0s, cpu_F0s); \ + tcg_gen_st_i32(cpu_F0s, cpu_env, \ + ucf64_reg_offset(UCOP_REG_D)); \ + break; \ + case 1 /* d */: \ + tcg_gen_ld_i64(cpu_F0d, cpu_env, \ + ucf64_reg_offset(UCOP_REG_M)); \ + gen_helper_ucf64_##name##d(cpu_F0d, cpu_F0d); \ + tcg_gen_st_i64(cpu_F0d, cpu_env, \ + ucf64_reg_offset(UCOP_REG_D)); \ + break; \ + case 2 /* w */: \ + ILLEGAL; \ + break; \ + } \ + } while (0) + +#define UCF64_OP2(name) do { \ + switch (UCOP_UCF64_FMT) { \ + case 0 /* s */: \ + tcg_gen_ld_i32(cpu_F0s, cpu_env, \ + ucf64_reg_offset(UCOP_REG_N)); \ + tcg_gen_ld_i32(cpu_F1s, cpu_env, \ + ucf64_reg_offset(UCOP_REG_M)); \ + gen_helper_ucf64_##name##s(cpu_F0s, \ + cpu_F0s, cpu_F1s, cpu_env); \ + tcg_gen_st_i32(cpu_F0s, cpu_env, \ + ucf64_reg_offset(UCOP_REG_D)); \ + break; \ + case 1 /* d */: \ + tcg_gen_ld_i64(cpu_F0d, cpu_env, \ + ucf64_reg_offset(UCOP_REG_N)); \ + tcg_gen_ld_i64(cpu_F1d, cpu_env, \ + ucf64_reg_offset(UCOP_REG_M)); \ + gen_helper_ucf64_##name##d(cpu_F0d, \ + cpu_F0d, cpu_F1d, cpu_env); \ + tcg_gen_st_i64(cpu_F0d, cpu_env, \ + ucf64_reg_offset(UCOP_REG_D)); \ + break; \ + case 2 /* w */: \ + ILLEGAL; \ + break; \ + } \ + } while (0) + +/* UniCore-F64 data processing */ +static void do_ucf64_datap(CPUUniCore32State *env, DisasContext *s, uint32_t insn) +{ + UniCore32CPU *cpu = uc32_env_get_cpu(env); + + if (UCOP_UCF64_FMT == 3) { + ILLEGAL; + } + switch (UCOP_UCF64_FUNC) { + case 0: /* add */ + UCF64_OP2(add); + break; + case 1: /* sub */ + UCF64_OP2(sub); + break; + case 2: /* mul */ + UCF64_OP2(mul); + break; + case 4: /* div */ + UCF64_OP2(div); + break; + case 5: /* abs */ + UCF64_OP1(abs); + break; + case 6: /* mov */ + UCF64_OP1(mov); + break; + case 7: /* neg */ + UCF64_OP1(neg); + break; + default: + ILLEGAL; + } +} + +/* Disassemble an F64 instruction */ +static void disas_ucf64_insn(CPUUniCore32State *env, DisasContext *s, uint32_t insn) +{ + UniCore32CPU *cpu = uc32_env_get_cpu(env); + + if (!UCOP_SET(29)) { + if (UCOP_SET(26)) { + do_ucf64_ldst_m(env, s, insn); + } else { + do_ucf64_ldst_i(env, s, insn); + } + } else { + if (UCOP_SET(5)) { + switch ((insn >> 26) & 0x3) { + case 0: + do_ucf64_datap(env, s, insn); + break; + case 1: + ILLEGAL; + break; + case 2: + do_ucf64_fcvt(env, s, insn); + break; + case 3: + do_ucf64_fcmp(env, s, insn); + break; + } + } else { + do_ucf64_trans(env, s, insn); + } + } +} + +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); +#else + return true; +#endif +} + +static inline void gen_goto_tb(DisasContext *s, int n, uint32_t dest) +{ + if (use_goto_tb(s, dest)) { + tcg_gen_goto_tb(n); + gen_set_pc_im(dest); + tcg_gen_exit_tb((uintptr_t)s->tb + n); + } else { + gen_set_pc_im(dest); + tcg_gen_exit_tb(0); + } +} + +static inline void gen_jmp(DisasContext *s, uint32_t dest) +{ + if (unlikely(s->singlestep_enabled)) { + /* An indirect jump so that we still trigger the debug exception. */ + gen_bx_im(s, dest); + } else { + gen_goto_tb(s, 0, dest); + s->is_jmp = DISAS_TB_JUMP; + } +} + +/* Returns nonzero if access to the PSR is not permitted. Marks t0 as dead. */ +static int gen_set_psr(DisasContext *s, uint32_t mask, int bsr, TCGv t0) +{ + TCGv tmp; + if (bsr) { + /* ??? This is also undefined in system mode. */ + if (IS_USER(s)) { + return 1; + } + + tmp = load_cpu_field(bsr); + tcg_gen_andi_i32(tmp, tmp, ~mask); + tcg_gen_andi_i32(t0, t0, mask); + tcg_gen_or_i32(tmp, tmp, t0); + store_cpu_field(tmp, bsr); + } else { + gen_set_asr(t0, mask); + } + dead_tmp(t0); + gen_lookup_tb(s); + return 0; +} + +/* Generate an old-style exception return. Marks pc as dead. */ +static void gen_exception_return(DisasContext *s, TCGv pc) +{ + TCGv tmp; + store_reg(s, 31, pc); + tmp = load_cpu_field(bsr); + gen_set_asr(tmp, 0xffffffff); + dead_tmp(tmp); + s->is_jmp = DISAS_UPDATE; +} + +static void disas_coproc_insn(CPUUniCore32State *env, DisasContext *s, + uint32_t insn) +{ + UniCore32CPU *cpu = uc32_env_get_cpu(env); + + switch (UCOP_CPNUM) { +#ifndef CONFIG_USER_ONLY + case 0: + disas_cp0_insn(env, s, insn); + break; + case 1: + disas_ocd_insn(env, s, insn); + break; +#endif + case 2: + disas_ucf64_insn(env, s, insn); + break; + default: + /* Unknown coprocessor. */ + cpu_abort(CPU(cpu), "Unknown coprocessor!"); + } +} + +/* data processing instructions */ +static void do_datap(CPUUniCore32State *env, DisasContext *s, uint32_t insn) +{ + UniCore32CPU *cpu = uc32_env_get_cpu(env); + TCGv tmp; + TCGv tmp2; + int logic_cc; + + if (UCOP_OPCODES == 0x0f || UCOP_OPCODES == 0x0d) { + if (UCOP_SET(23)) { /* CMOV instructions */ + if ((UCOP_CMOV_COND == 0xe) || (UCOP_CMOV_COND == 0xf)) { + ILLEGAL; + } + /* if not always execute, we generate a conditional jump to + next instruction */ + s->condlabel = gen_new_label(); + gen_test_cc(UCOP_CMOV_COND ^ 1, s->condlabel); + s->condjmp = 1; + } + } + + logic_cc = table_logic_cc[UCOP_OPCODES] & (UCOP_SET_S >> 24); + + if (UCOP_SET(29)) { + unsigned int val; + /* immediate operand */ + val = UCOP_IMM_9; + if (UCOP_SH_IM) { + val = (val >> UCOP_SH_IM) | (val << (32 - UCOP_SH_IM)); + } + tmp2 = new_tmp(); + tcg_gen_movi_i32(tmp2, val); + if (logic_cc && UCOP_SH_IM) { + gen_set_CF_bit31(tmp2); + } + } else { + /* register */ + tmp2 = load_reg(s, UCOP_REG_M); + if (UCOP_SET(5)) { + tmp = load_reg(s, UCOP_REG_S); + gen_uc32_shift_reg(tmp2, UCOP_SH_OP, tmp, logic_cc); + } else { + gen_uc32_shift_im(tmp2, UCOP_SH_OP, UCOP_SH_IM, logic_cc); + } + } + + if (UCOP_OPCODES != 0x0f && UCOP_OPCODES != 0x0d) { + tmp = load_reg(s, UCOP_REG_N); + } else { + TCGV_UNUSED(tmp); + } + + switch (UCOP_OPCODES) { + case 0x00: + tcg_gen_and_i32(tmp, tmp, tmp2); + if (logic_cc) { + gen_logic_CC(tmp); + } + store_reg_bx(s, UCOP_REG_D, tmp); + break; + case 0x01: + tcg_gen_xor_i32(tmp, tmp, tmp2); + if (logic_cc) { + gen_logic_CC(tmp); + } + store_reg_bx(s, UCOP_REG_D, tmp); + break; + case 0x02: + if (UCOP_SET_S && UCOP_REG_D == 31) { + /* SUBS r31, ... is used for exception return. */ + if (IS_USER(s)) { + ILLEGAL; + } + gen_helper_sub_cc(tmp, cpu_env, tmp, tmp2); + gen_exception_return(s, tmp); + } else { + if (UCOP_SET_S) { + gen_helper_sub_cc(tmp, cpu_env, tmp, tmp2); + } else { + tcg_gen_sub_i32(tmp, tmp, tmp2); + } + store_reg_bx(s, UCOP_REG_D, tmp); + } + break; + case 0x03: + if (UCOP_SET_S) { + gen_helper_sub_cc(tmp, cpu_env, tmp2, tmp); + } else { + tcg_gen_sub_i32(tmp, tmp2, tmp); + } + store_reg_bx(s, UCOP_REG_D, tmp); + break; + case 0x04: + if (UCOP_SET_S) { + gen_helper_add_cc(tmp, cpu_env, tmp, tmp2); + } else { + tcg_gen_add_i32(tmp, tmp, tmp2); + } + store_reg_bx(s, UCOP_REG_D, tmp); + break; + case 0x05: + if (UCOP_SET_S) { + gen_helper_adc_cc(tmp, cpu_env, tmp, tmp2); + } else { + gen_add_carry(tmp, tmp, tmp2); + } + store_reg_bx(s, UCOP_REG_D, tmp); + break; + case 0x06: + if (UCOP_SET_S) { + gen_helper_sbc_cc(tmp, cpu_env, tmp, tmp2); + } else { + gen_sub_carry(tmp, tmp, tmp2); + } + store_reg_bx(s, UCOP_REG_D, tmp); + break; + case 0x07: + if (UCOP_SET_S) { + gen_helper_sbc_cc(tmp, cpu_env, tmp2, tmp); + } else { + gen_sub_carry(tmp, tmp2, tmp); + } + store_reg_bx(s, UCOP_REG_D, tmp); + break; + case 0x08: + if (UCOP_SET_S) { + tcg_gen_and_i32(tmp, tmp, tmp2); + gen_logic_CC(tmp); + } + dead_tmp(tmp); + break; + case 0x09: + if (UCOP_SET_S) { + tcg_gen_xor_i32(tmp, tmp, tmp2); + gen_logic_CC(tmp); + } + dead_tmp(tmp); + break; + case 0x0a: + if (UCOP_SET_S) { + gen_helper_sub_cc(tmp, cpu_env, tmp, tmp2); + } + dead_tmp(tmp); + break; + case 0x0b: + if (UCOP_SET_S) { + gen_helper_add_cc(tmp, cpu_env, tmp, tmp2); + } + dead_tmp(tmp); + break; + case 0x0c: + tcg_gen_or_i32(tmp, tmp, tmp2); + if (logic_cc) { + gen_logic_CC(tmp); + } + store_reg_bx(s, UCOP_REG_D, tmp); + break; + case 0x0d: + if (logic_cc && UCOP_REG_D == 31) { + /* MOVS r31, ... is used for exception return. */ + if (IS_USER(s)) { + ILLEGAL; + } + gen_exception_return(s, tmp2); + } else { + if (logic_cc) { + gen_logic_CC(tmp2); + } + store_reg_bx(s, UCOP_REG_D, tmp2); + } + break; + case 0x0e: + tcg_gen_andc_i32(tmp, tmp, tmp2); + if (logic_cc) { + gen_logic_CC(tmp); + } + store_reg_bx(s, UCOP_REG_D, tmp); + break; + default: + case 0x0f: + tcg_gen_not_i32(tmp2, tmp2); + if (logic_cc) { + gen_logic_CC(tmp2); + } + store_reg_bx(s, UCOP_REG_D, tmp2); + break; + } + if (UCOP_OPCODES != 0x0f && UCOP_OPCODES != 0x0d) { + dead_tmp(tmp2); + } +} + +/* multiply */ +static void do_mult(CPUUniCore32State *env, DisasContext *s, uint32_t insn) +{ + TCGv tmp, tmp2, tmp3, tmp4; + + if (UCOP_SET(27)) { + /* 64 bit mul */ + tmp = load_reg(s, UCOP_REG_M); + tmp2 = load_reg(s, UCOP_REG_N); + if (UCOP_SET(26)) { + tcg_gen_muls2_i32(tmp, tmp2, tmp, tmp2); + } else { + tcg_gen_mulu2_i32(tmp, tmp2, tmp, tmp2); + } + if (UCOP_SET(25)) { /* mult accumulate */ + tmp3 = load_reg(s, UCOP_REG_LO); + tmp4 = load_reg(s, UCOP_REG_HI); + tcg_gen_add2_i32(tmp, tmp2, tmp, tmp2, tmp3, tmp4); + dead_tmp(tmp3); + dead_tmp(tmp4); + } + store_reg(s, UCOP_REG_LO, tmp); + store_reg(s, UCOP_REG_HI, tmp2); + } else { + /* 32 bit mul */ + tmp = load_reg(s, UCOP_REG_M); + tmp2 = load_reg(s, UCOP_REG_N); + tcg_gen_mul_i32(tmp, tmp, tmp2); + dead_tmp(tmp2); + if (UCOP_SET(25)) { + /* Add */ + tmp2 = load_reg(s, UCOP_REG_S); + tcg_gen_add_i32(tmp, tmp, tmp2); + dead_tmp(tmp2); + } + if (UCOP_SET_S) { + gen_logic_CC(tmp); + } + store_reg(s, UCOP_REG_D, tmp); + } +} + +/* miscellaneous instructions */ +static void do_misc(CPUUniCore32State *env, DisasContext *s, uint32_t insn) +{ + UniCore32CPU *cpu = uc32_env_get_cpu(env); + unsigned int val; + TCGv tmp; + + if ((insn & 0xffffffe0) == 0x10ffc120) { + /* Trivial implementation equivalent to bx. */ + tmp = load_reg(s, UCOP_REG_M); + gen_bx(s, tmp); + return; + } + + if ((insn & 0xfbffc000) == 0x30ffc000) { + /* PSR = immediate */ + val = UCOP_IMM_9; + if (UCOP_SH_IM) { + val = (val >> UCOP_SH_IM) | (val << (32 - UCOP_SH_IM)); + } + tmp = new_tmp(); + tcg_gen_movi_i32(tmp, val); + if (gen_set_psr(s, ~ASR_RESERVED, UCOP_SET_B, tmp)) { + ILLEGAL; + } + return; + } + + if ((insn & 0xfbffffe0) == 0x12ffc020) { + /* PSR.flag = reg */ + tmp = load_reg(s, UCOP_REG_M); + if (gen_set_psr(s, ASR_NZCV, UCOP_SET_B, tmp)) { + ILLEGAL; + } + return; + } + + if ((insn & 0xfbffffe0) == 0x10ffc020) { + /* PSR = reg */ + tmp = load_reg(s, UCOP_REG_M); + if (gen_set_psr(s, ~ASR_RESERVED, UCOP_SET_B, tmp)) { + ILLEGAL; + } + return; + } + + if ((insn & 0xfbf83fff) == 0x10f80000) { + /* reg = PSR */ + if (UCOP_SET_B) { + if (IS_USER(s)) { + ILLEGAL; + } + tmp = load_cpu_field(bsr); + } else { + tmp = new_tmp(); + gen_helper_asr_read(tmp, cpu_env); + } + store_reg(s, UCOP_REG_D, tmp); + return; + } + + if ((insn & 0xfbf83fe0) == 0x12f80120) { + /* clz */ + tmp = load_reg(s, UCOP_REG_M); + if (UCOP_SET(26)) { + gen_helper_clo(tmp, tmp); + } else { + gen_helper_clz(tmp, tmp); + } + store_reg(s, UCOP_REG_D, tmp); + return; + } + + /* otherwise */ + ILLEGAL; +} + +/* load/store I_offset and R_offset */ +static void do_ldst_ir(CPUUniCore32State *env, DisasContext *s, uint32_t insn) +{ + unsigned int mmu_idx; + TCGv tmp; + TCGv tmp2; + + tmp2 = load_reg(s, UCOP_REG_N); + mmu_idx = (IS_USER(s) || (!UCOP_SET_P && UCOP_SET_W)); + + /* immediate */ + if (UCOP_SET_P) { + gen_add_data_offset(s, insn, tmp2); + } + + if (UCOP_SET_L) { + /* load */ + if (UCOP_SET_B) { + tmp = gen_ld8u(tmp2, mmu_idx); + } else { + tmp = gen_ld32(tmp2, mmu_idx); + } + } else { + /* store */ + tmp = load_reg(s, UCOP_REG_D); + if (UCOP_SET_B) { + gen_st8(tmp, tmp2, mmu_idx); + } else { + gen_st32(tmp, tmp2, mmu_idx); + } + } + if (!UCOP_SET_P) { + gen_add_data_offset(s, insn, tmp2); + store_reg(s, UCOP_REG_N, tmp2); + } else if (UCOP_SET_W) { + store_reg(s, UCOP_REG_N, tmp2); + } else { + dead_tmp(tmp2); + } + if (UCOP_SET_L) { + /* Complete the load. */ + if (UCOP_REG_D == 31) { + gen_bx(s, tmp); + } else { + store_reg(s, UCOP_REG_D, tmp); + } + } +} + +/* SWP instruction */ +static void do_swap(CPUUniCore32State *env, DisasContext *s, uint32_t insn) +{ + UniCore32CPU *cpu = uc32_env_get_cpu(env); + TCGv addr; + TCGv tmp; + TCGv tmp2; + + if ((insn & 0xff003fe0) != 0x40000120) { + ILLEGAL; + } + + /* ??? This is not really atomic. However we know + we never have multiple CPUs running in parallel, + so it is good enough. */ + addr = load_reg(s, UCOP_REG_N); + tmp = load_reg(s, UCOP_REG_M); + if (UCOP_SET_B) { + tmp2 = gen_ld8u(addr, IS_USER(s)); + gen_st8(tmp, addr, IS_USER(s)); + } else { + tmp2 = gen_ld32(addr, IS_USER(s)); + gen_st32(tmp, addr, IS_USER(s)); + } + dead_tmp(addr); + store_reg(s, UCOP_REG_D, tmp2); +} + +/* load/store hw/sb */ +static void do_ldst_hwsb(CPUUniCore32State *env, DisasContext *s, uint32_t insn) +{ + UniCore32CPU *cpu = uc32_env_get_cpu(env); + TCGv addr; + TCGv tmp; + + if (UCOP_SH_OP == 0) { + do_swap(env, s, insn); + return; + } + + addr = load_reg(s, UCOP_REG_N); + if (UCOP_SET_P) { + gen_add_datah_offset(s, insn, addr); + } + + if (UCOP_SET_L) { /* load */ + switch (UCOP_SH_OP) { + case 1: + tmp = gen_ld16u(addr, IS_USER(s)); + break; + case 2: + tmp = gen_ld8s(addr, IS_USER(s)); + break; + default: /* see do_swap */ + case 3: + tmp = gen_ld16s(addr, IS_USER(s)); + break; + } + } else { /* store */ + if (UCOP_SH_OP != 1) { + ILLEGAL; + } + tmp = load_reg(s, UCOP_REG_D); + gen_st16(tmp, addr, IS_USER(s)); + } + /* Perform base writeback before the loaded value to + ensure correct behavior with overlapping index registers. */ + if (!UCOP_SET_P) { + gen_add_datah_offset(s, insn, addr); + store_reg(s, UCOP_REG_N, addr); + } else if (UCOP_SET_W) { + store_reg(s, UCOP_REG_N, addr); + } else { + dead_tmp(addr); + } + if (UCOP_SET_L) { + /* Complete the load. */ + store_reg(s, UCOP_REG_D, tmp); + } +} + +/* load/store multiple words */ +static void do_ldst_m(CPUUniCore32State *env, DisasContext *s, uint32_t insn) +{ + UniCore32CPU *cpu = uc32_env_get_cpu(env); + unsigned int val, i, mmu_idx; + int j, n, reg, user, loaded_base; + TCGv tmp; + TCGv tmp2; + TCGv addr; + TCGv loaded_var; + + if (UCOP_SET(7)) { + ILLEGAL; + } + /* XXX: store correct base if write back */ + user = 0; + if (UCOP_SET_B) { /* S bit in instruction table */ + if (IS_USER(s)) { + ILLEGAL; /* only usable in supervisor mode */ + } + if (UCOP_SET(18) == 0) { /* pc reg */ + user = 1; + } + } + + mmu_idx = (IS_USER(s) || (!UCOP_SET_P && UCOP_SET_W)); + addr = load_reg(s, UCOP_REG_N); + + /* compute total size */ + loaded_base = 0; + TCGV_UNUSED(loaded_var); + n = 0; + for (i = 0; i < 6; i++) { + if (UCOP_SET(i)) { + n++; + } + } + for (i = 9; i < 19; i++) { + if (UCOP_SET(i)) { + n++; + } + } + /* XXX: test invalid n == 0 case ? */ + if (UCOP_SET_U) { + if (UCOP_SET_P) { + /* pre increment */ + tcg_gen_addi_i32(addr, addr, 4); + } else { + /* post increment */ + } + } else { + if (UCOP_SET_P) { + /* pre decrement */ + tcg_gen_addi_i32(addr, addr, -(n * 4)); + } else { + /* post decrement */ + if (n != 1) { + tcg_gen_addi_i32(addr, addr, -((n - 1) * 4)); + } + } + } + + j = 0; + reg = UCOP_SET(6) ? 16 : 0; + for (i = 0; i < 19; i++, reg++) { + if (i == 6) { + i = i + 3; + } + if (UCOP_SET(i)) { + if (UCOP_SET_L) { /* load */ + tmp = gen_ld32(addr, mmu_idx); + if (reg == 31) { + gen_bx(s, tmp); + } else if (user) { + tmp2 = tcg_const_i32(reg); + gen_helper_set_user_reg(cpu_env, tmp2, tmp); + tcg_temp_free_i32(tmp2); + dead_tmp(tmp); + } else if (reg == UCOP_REG_N) { + loaded_var = tmp; + loaded_base = 1; + } else { + store_reg(s, reg, tmp); + } + } else { /* store */ + if (reg == 31) { + /* special case: r31 = PC + 4 */ + val = (long)s->pc; + tmp = new_tmp(); + tcg_gen_movi_i32(tmp, val); + } else if (user) { + tmp = new_tmp(); + tmp2 = tcg_const_i32(reg); + gen_helper_get_user_reg(tmp, cpu_env, tmp2); + tcg_temp_free_i32(tmp2); + } else { + tmp = load_reg(s, reg); + } + gen_st32(tmp, addr, mmu_idx); + } + j++; + /* no need to add after the last transfer */ + if (j != n) { + tcg_gen_addi_i32(addr, addr, 4); + } + } + } + if (UCOP_SET_W) { /* write back */ + if (UCOP_SET_U) { + if (UCOP_SET_P) { + /* pre increment */ + } else { + /* post increment */ + tcg_gen_addi_i32(addr, addr, 4); + } + } else { + if (UCOP_SET_P) { + /* pre decrement */ + if (n != 1) { + tcg_gen_addi_i32(addr, addr, -((n - 1) * 4)); + } + } else { + /* post decrement */ + tcg_gen_addi_i32(addr, addr, -(n * 4)); + } + } + store_reg(s, UCOP_REG_N, addr); + } else { + dead_tmp(addr); + } + if (loaded_base) { + store_reg(s, UCOP_REG_N, loaded_var); + } + if (UCOP_SET_B && !user) { + /* Restore ASR from BSR. */ + tmp = load_cpu_field(bsr); + gen_set_asr(tmp, 0xffffffff); + dead_tmp(tmp); + s->is_jmp = DISAS_UPDATE; + } +} + +/* branch (and link) */ +static void do_branch(CPUUniCore32State *env, DisasContext *s, uint32_t insn) +{ + UniCore32CPU *cpu = uc32_env_get_cpu(env); + unsigned int val; + int32_t offset; + TCGv tmp; + + if (UCOP_COND == 0xf) { + ILLEGAL; + } + + if (UCOP_COND != 0xe) { + /* if not always execute, we generate a conditional jump to + next instruction */ + s->condlabel = gen_new_label(); + gen_test_cc(UCOP_COND ^ 1, s->condlabel); + s->condjmp = 1; + } + + val = (int32_t)s->pc; + if (UCOP_SET_L) { + tmp = new_tmp(); + tcg_gen_movi_i32(tmp, val); + store_reg(s, 30, tmp); + } + offset = (((int32_t)insn << 8) >> 8); + val += (offset << 2); /* unicore is pc+4 */ + gen_jmp(s, val); +} + +static void disas_uc32_insn(CPUUniCore32State *env, DisasContext *s) +{ + UniCore32CPU *cpu = uc32_env_get_cpu(env); + unsigned int insn; + + insn = cpu_ldl_code(env, s->pc); + s->pc += 4; + + /* UniCore instructions class: + * AAAB BBBC xxxx xxxx xxxx xxxD xxEx xxxx + * AAA : see switch case + * BBBB : opcodes or cond or PUBW + * C : S OR L + * D : 8 + * E : 5 + */ + switch (insn >> 29) { + case 0x0: + if (UCOP_SET(5) && UCOP_SET(8) && !UCOP_SET(28)) { + do_mult(env, s, insn); + break; + } + + if (UCOP_SET(8)) { + do_misc(env, s, insn); + break; + } + case 0x1: + if (((UCOP_OPCODES >> 2) == 2) && !UCOP_SET_S) { + do_misc(env, s, insn); + break; + } + do_datap(env, s, insn); + break; + + case 0x2: + if (UCOP_SET(8) && UCOP_SET(5)) { + do_ldst_hwsb(env, s, insn); + break; + } + if (UCOP_SET(8) || UCOP_SET(5)) { + ILLEGAL; + } + case 0x3: + do_ldst_ir(env, s, insn); + break; + + case 0x4: + if (UCOP_SET(8)) { + ILLEGAL; /* extended instructions */ + } + do_ldst_m(env, s, insn); + break; + case 0x5: + do_branch(env, s, insn); + break; + case 0x6: + /* Coprocessor. */ + disas_coproc_insn(env, s, insn); + break; + case 0x7: + if (!UCOP_SET(28)) { + disas_coproc_insn(env, s, insn); + break; + } + if ((insn & 0xff000000) == 0xff000000) { /* syscall */ + gen_set_pc_im(s->pc); + s->is_jmp = DISAS_SYSCALL; + break; + } + ILLEGAL; + } +} + +/* generate intermediate code for basic block 'tb'. */ +void gen_intermediate_code(CPUUniCore32State *env, TranslationBlock *tb) +{ + UniCore32CPU *cpu = uc32_env_get_cpu(env); + CPUState *cs = CPU(cpu); + DisasContext dc1, *dc = &dc1; + target_ulong pc_start; + uint32_t next_page_start; + int num_insns; + int max_insns; + + /* generate intermediate code */ + num_temps = 0; + + pc_start = tb->pc; + + dc->tb = tb; + + dc->is_jmp = DISAS_NEXT; + dc->pc = pc_start; + dc->singlestep_enabled = cs->singlestep_enabled; + dc->condjmp = 0; + cpu_F0s = tcg_temp_new_i32(); + cpu_F1s = tcg_temp_new_i32(); + cpu_F0d = tcg_temp_new_i64(); + cpu_F1d = tcg_temp_new_i64(); + next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE; + 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; + } + +#ifndef CONFIG_USER_ONLY + if ((env->uncached_asr & ASR_M) == ASR_MODE_USER) { + dc->user = 1; + } else { + dc->user = 0; + } +#endif + + gen_tb_start(tb); + do { + tcg_gen_insn_start(dc->pc); + num_insns++; + + if (unlikely(cpu_breakpoint_test(cs, dc->pc, BP_ANY))) { + gen_set_pc_im(dc->pc); + gen_exception(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 += 4; + goto done_generating; + } + + if (num_insns == max_insns && (tb->cflags & CF_LAST_IO)) { + gen_io_start(); + } + + disas_uc32_insn(env, dc); + + if (num_temps) { + fprintf(stderr, "Internal resource leak before %08x\n", dc->pc); + num_temps = 0; + } + + if (dc->condjmp && !dc->is_jmp) { + gen_set_label(dc->condlabel); + dc->condjmp = 0; + } + /* Translation stops when a conditional branch is encountered. + * Otherwise the subsequent code could get translated several times. + * Also stop translation when a page boundary is reached. This + * ensures prefetch aborts occur at the right place. */ + } while (!dc->is_jmp && !tcg_op_buf_full() && + !cs->singlestep_enabled && + !singlestep && + dc->pc < next_page_start && + num_insns < max_insns); + + if (tb->cflags & CF_LAST_IO) { + if (dc->condjmp) { + /* FIXME: This can theoretically happen with self-modifying + code. */ + cpu_abort(cs, "IO on conditional branch instruction"); + } + gen_io_end(); + } + + /* At this stage dc->condjmp will only be set when the skipped + instruction was a conditional branch or trap, and the PC has + already been written. */ + if (unlikely(cs->singlestep_enabled)) { + /* Make sure the pc is updated, and raise a debug exception. */ + if (dc->condjmp) { + if (dc->is_jmp == DISAS_SYSCALL) { + gen_exception(UC32_EXCP_PRIV); + } else { + gen_exception(EXCP_DEBUG); + } + gen_set_label(dc->condlabel); + } + if (dc->condjmp || !dc->is_jmp) { + gen_set_pc_im(dc->pc); + dc->condjmp = 0; + } + if (dc->is_jmp == DISAS_SYSCALL && !dc->condjmp) { + gen_exception(UC32_EXCP_PRIV); + } else { + gen_exception(EXCP_DEBUG); + } + } else { + /* While branches must always occur at the end of an IT block, + there are a few other things that can cause us to terminate + the TB in the middel of an IT block: + - Exception generating instructions (bkpt, swi, undefined). + - Page boundaries. + - Hardware watchpoints. + Hardware breakpoints have already been handled and skip this code. + */ + switch (dc->is_jmp) { + case DISAS_NEXT: + gen_goto_tb(dc, 1, dc->pc); + break; + default: + case DISAS_JUMP: + case DISAS_UPDATE: + /* 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; + case DISAS_SYSCALL: + gen_exception(UC32_EXCP_PRIV); + break; + } + if (dc->condjmp) { + gen_set_label(dc->condlabel); + gen_goto_tb(dc, 1, dc->pc); + dc->condjmp = 0; + } + } + +done_generating: + 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; +} + +static const char *cpu_mode_names[16] = { + "USER", "REAL", "INTR", "PRIV", "UM14", "UM15", "UM16", "TRAP", + "UM18", "UM19", "UM1A", "EXTN", "UM1C", "UM1D", "UM1E", "SUSR" +}; + +#undef UCF64_DUMP_STATE +#ifdef UCF64_DUMP_STATE +static void cpu_dump_state_ucf64(CPUUniCore32State *env, FILE *f, + fprintf_function cpu_fprintf, int flags) +{ + int i; + union { + uint32_t i; + float s; + } s0, s1; + CPU_DoubleU d; + /* ??? This assumes float64 and double have the same layout. + Oh well, it's only debug dumps. */ + union { + float64 f64; + double d; + } d0; + + for (i = 0; i < 16; i++) { + d.d = env->ucf64.regs[i]; + s0.i = d.l.lower; + s1.i = d.l.upper; + d0.f64 = d.d; + cpu_fprintf(f, "s%02d=%08x(%8g) s%02d=%08x(%8g)", + i * 2, (int)s0.i, s0.s, + i * 2 + 1, (int)s1.i, s1.s); + cpu_fprintf(f, " d%02d=%" PRIx64 "(%8g)\n", + i, (uint64_t)d0.f64, d0.d); + } + cpu_fprintf(f, "FPSCR: %08x\n", (int)env->ucf64.xregs[UC32_UCF64_FPSCR]); +} +#else +#define cpu_dump_state_ucf64(env, file, pr, flags) do { } while (0) +#endif + +void uc32_cpu_dump_state(CPUState *cs, FILE *f, + fprintf_function cpu_fprintf, int flags) +{ + UniCore32CPU *cpu = UNICORE32_CPU(cs); + CPUUniCore32State *env = &cpu->env; + int i; + uint32_t psr; + + for (i = 0; i < 32; i++) { + cpu_fprintf(f, "R%02d=%08x", i, env->regs[i]); + if ((i % 4) == 3) { + cpu_fprintf(f, "\n"); + } else { + cpu_fprintf(f, " "); + } + } + psr = cpu_asr_read(env); + cpu_fprintf(f, "PSR=%08x %c%c%c%c %s\n", + psr, + psr & (1 << 31) ? 'N' : '-', + psr & (1 << 30) ? 'Z' : '-', + psr & (1 << 29) ? 'C' : '-', + psr & (1 << 28) ? 'V' : '-', + cpu_mode_names[psr & 0xf]); + + cpu_dump_state_ucf64(env, f, cpu_fprintf, flags); +} + +void restore_state_to_opc(CPUUniCore32State *env, TranslationBlock *tb, + target_ulong *data) +{ + env->regs[31] = data[0]; +} diff --git a/target/unicore32/ucf64_helper.c b/target/unicore32/ucf64_helper.c new file mode 100644 index 0000000000..6c919010c3 --- /dev/null +++ b/target/unicore32/ucf64_helper.c @@ -0,0 +1,325 @@ +/* + * UniCore-F64 simulation helpers for QEMU. + * + * Copyright (C) 2010-2012 Guan Xuetao + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation, or any later version. + * See the COPYING file in the top-level directory. + */ +#include "qemu/osdep.h" +#include "cpu.h" +#include "exec/helper-proto.h" + +/* + * The convention used for UniCore-F64 instructions: + * Single precition routines have a "s" suffix + * Double precision routines have a "d" suffix. + */ + +/* Convert host exception flags to f64 form. */ +static inline int ucf64_exceptbits_from_host(int host_bits) +{ + int target_bits = 0; + + if (host_bits & float_flag_invalid) { + target_bits |= UCF64_FPSCR_FLAG_INVALID; + } + if (host_bits & float_flag_divbyzero) { + target_bits |= UCF64_FPSCR_FLAG_DIVZERO; + } + if (host_bits & float_flag_overflow) { + target_bits |= UCF64_FPSCR_FLAG_OVERFLOW; + } + if (host_bits & float_flag_underflow) { + target_bits |= UCF64_FPSCR_FLAG_UNDERFLOW; + } + if (host_bits & float_flag_inexact) { + target_bits |= UCF64_FPSCR_FLAG_INEXACT; + } + return target_bits; +} + +uint32_t HELPER(ucf64_get_fpscr)(CPUUniCore32State *env) +{ + int i; + uint32_t fpscr; + + fpscr = (env->ucf64.xregs[UC32_UCF64_FPSCR] & UCF64_FPSCR_MASK); + i = get_float_exception_flags(&env->ucf64.fp_status); + fpscr |= ucf64_exceptbits_from_host(i); + return fpscr; +} + +/* Convert ucf64 exception flags to target form. */ +static inline int ucf64_exceptbits_to_host(int target_bits) +{ + int host_bits = 0; + + if (target_bits & UCF64_FPSCR_FLAG_INVALID) { + host_bits |= float_flag_invalid; + } + if (target_bits & UCF64_FPSCR_FLAG_DIVZERO) { + host_bits |= float_flag_divbyzero; + } + if (target_bits & UCF64_FPSCR_FLAG_OVERFLOW) { + host_bits |= float_flag_overflow; + } + if (target_bits & UCF64_FPSCR_FLAG_UNDERFLOW) { + host_bits |= float_flag_underflow; + } + if (target_bits & UCF64_FPSCR_FLAG_INEXACT) { + host_bits |= float_flag_inexact; + } + return host_bits; +} + +void HELPER(ucf64_set_fpscr)(CPUUniCore32State *env, uint32_t val) +{ + UniCore32CPU *cpu = uc32_env_get_cpu(env); + int i; + uint32_t changed; + + changed = env->ucf64.xregs[UC32_UCF64_FPSCR]; + env->ucf64.xregs[UC32_UCF64_FPSCR] = (val & UCF64_FPSCR_MASK); + + changed ^= val; + if (changed & (UCF64_FPSCR_RND_MASK)) { + i = UCF64_FPSCR_RND(val); + switch (i) { + case 0: + i = float_round_nearest_even; + break; + case 1: + i = float_round_to_zero; + break; + case 2: + i = float_round_up; + break; + case 3: + i = float_round_down; + break; + default: /* 100 and 101 not implement */ + cpu_abort(CPU(cpu), "Unsupported UniCore-F64 round mode"); + } + set_float_rounding_mode(i, &env->ucf64.fp_status); + } + + i = ucf64_exceptbits_to_host(UCF64_FPSCR_TRAPEN(val)); + set_float_exception_flags(i, &env->ucf64.fp_status); +} + +float32 HELPER(ucf64_adds)(float32 a, float32 b, CPUUniCore32State *env) +{ + return float32_add(a, b, &env->ucf64.fp_status); +} + +float64 HELPER(ucf64_addd)(float64 a, float64 b, CPUUniCore32State *env) +{ + return float64_add(a, b, &env->ucf64.fp_status); +} + +float32 HELPER(ucf64_subs)(float32 a, float32 b, CPUUniCore32State *env) +{ + return float32_sub(a, b, &env->ucf64.fp_status); +} + +float64 HELPER(ucf64_subd)(float64 a, float64 b, CPUUniCore32State *env) +{ + return float64_sub(a, b, &env->ucf64.fp_status); +} + +float32 HELPER(ucf64_muls)(float32 a, float32 b, CPUUniCore32State *env) +{ + return float32_mul(a, b, &env->ucf64.fp_status); +} + +float64 HELPER(ucf64_muld)(float64 a, float64 b, CPUUniCore32State *env) +{ + return float64_mul(a, b, &env->ucf64.fp_status); +} + +float32 HELPER(ucf64_divs)(float32 a, float32 b, CPUUniCore32State *env) +{ + return float32_div(a, b, &env->ucf64.fp_status); +} + +float64 HELPER(ucf64_divd)(float64 a, float64 b, CPUUniCore32State *env) +{ + return float64_div(a, b, &env->ucf64.fp_status); +} + +float32 HELPER(ucf64_negs)(float32 a) +{ + return float32_chs(a); +} + +float64 HELPER(ucf64_negd)(float64 a) +{ + return float64_chs(a); +} + +float32 HELPER(ucf64_abss)(float32 a) +{ + return float32_abs(a); +} + +float64 HELPER(ucf64_absd)(float64 a) +{ + return float64_abs(a); +} + +void HELPER(ucf64_cmps)(float32 a, float32 b, uint32_t c, + CPUUniCore32State *env) +{ + int flag; + flag = float32_compare_quiet(a, b, &env->ucf64.fp_status); + env->CF = 0; + switch (c & 0x7) { + case 0: /* F */ + break; + case 1: /* UN */ + if (flag == 2) { + env->CF = 1; + } + break; + case 2: /* EQ */ + if (flag == 0) { + env->CF = 1; + } + break; + case 3: /* UEQ */ + if ((flag == 0) || (flag == 2)) { + env->CF = 1; + } + break; + case 4: /* OLT */ + if (flag == -1) { + env->CF = 1; + } + break; + case 5: /* ULT */ + if ((flag == -1) || (flag == 2)) { + env->CF = 1; + } + break; + case 6: /* OLE */ + if ((flag == -1) || (flag == 0)) { + env->CF = 1; + } + break; + case 7: /* ULE */ + if (flag != 1) { + env->CF = 1; + } + break; + } + env->ucf64.xregs[UC32_UCF64_FPSCR] = (env->CF << 29) + | (env->ucf64.xregs[UC32_UCF64_FPSCR] & 0x0fffffff); +} + +void HELPER(ucf64_cmpd)(float64 a, float64 b, uint32_t c, + CPUUniCore32State *env) +{ + int flag; + flag = float64_compare_quiet(a, b, &env->ucf64.fp_status); + env->CF = 0; + switch (c & 0x7) { + case 0: /* F */ + break; + case 1: /* UN */ + if (flag == 2) { + env->CF = 1; + } + break; + case 2: /* EQ */ + if (flag == 0) { + env->CF = 1; + } + break; + case 3: /* UEQ */ + if ((flag == 0) || (flag == 2)) { + env->CF = 1; + } + break; + case 4: /* OLT */ + if (flag == -1) { + env->CF = 1; + } + break; + case 5: /* ULT */ + if ((flag == -1) || (flag == 2)) { + env->CF = 1; + } + break; + case 6: /* OLE */ + if ((flag == -1) || (flag == 0)) { + env->CF = 1; + } + break; + case 7: /* ULE */ + if (flag != 1) { + env->CF = 1; + } + break; + } + env->ucf64.xregs[UC32_UCF64_FPSCR] = (env->CF << 29) + | (env->ucf64.xregs[UC32_UCF64_FPSCR] & 0x0fffffff); +} + +/* Helper routines to perform bitwise copies between float and int. */ +static inline float32 ucf64_itos(uint32_t i) +{ + union { + uint32_t i; + float32 s; + } v; + + v.i = i; + return v.s; +} + +static inline uint32_t ucf64_stoi(float32 s) +{ + union { + uint32_t i; + float32 s; + } v; + + v.s = s; + return v.i; +} + +/* Integer to float conversion. */ +float32 HELPER(ucf64_si2sf)(float32 x, CPUUniCore32State *env) +{ + return int32_to_float32(ucf64_stoi(x), &env->ucf64.fp_status); +} + +float64 HELPER(ucf64_si2df)(float32 x, CPUUniCore32State *env) +{ + return int32_to_float64(ucf64_stoi(x), &env->ucf64.fp_status); +} + +/* Float to integer conversion. */ +float32 HELPER(ucf64_sf2si)(float32 x, CPUUniCore32State *env) +{ + return ucf64_itos(float32_to_int32(x, &env->ucf64.fp_status)); +} + +float32 HELPER(ucf64_df2si)(float64 x, CPUUniCore32State *env) +{ + return ucf64_itos(float64_to_int32(x, &env->ucf64.fp_status)); +} + +/* floating point conversion */ +float64 HELPER(ucf64_sf2df)(float32 x, CPUUniCore32State *env) +{ + return float32_to_float64(x, &env->ucf64.fp_status); +} + +float32 HELPER(ucf64_df2sf)(float64 x, CPUUniCore32State *env) +{ + return float64_to_float32(x, &env->ucf64.fp_status); +} |