mirror of
https://github.com/yuzu-emu/unicorn
synced 2024-11-24 19:28:11 +00:00
96 lines
2.7 KiB
C
Executable file
96 lines
2.7 KiB
C
Executable file
/* Unicorn Emulator Engine */
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/* By Nguyen Anh Quynh <aquynh@gmail.com>, 2015 */
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#include "hw/boards.h"
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#include "hw/m68k/m68k.h"
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#include "sysemu/cpus.h"
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#include "unicorn.h"
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#include "cpu.h"
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#include "unicorn_common.h"
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#define READ_QWORD(x) ((uint64)x)
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#define READ_DWORD(x) (x & 0xffffffff)
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#define READ_WORD(x) (x & 0xffff)
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#define READ_BYTE_H(x) ((x & 0xffff) >> 8)
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#define READ_BYTE_L(x) (x & 0xff)
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static void m68k_set_pc(struct uc_struct *uc, uint64_t address)
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{
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((CPUM68KState *)uc->current_cpu->env_ptr)->pc = address;
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}
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void m68k_reg_reset(uch handle)
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{
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struct uc_struct *uc = (struct uc_struct *) handle;
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CPUArchState *env;
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env = first_cpu->env_ptr;
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memset(env->aregs, 0, sizeof(env->aregs));
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memset(env->dregs, 0, sizeof(env->dregs));
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env->pc = 0;
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}
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int m68k_reg_read(uch handle, unsigned int regid, void *value)
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{
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struct uc_struct *uc = (struct uc_struct *)handle;
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CPUState *mycpu = first_cpu;
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if (regid >= UC_M68K_REG_A0 && regid <= UC_M68K_REG_A7)
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*(int32_t *)value = M68K_CPU(uc, mycpu)->env.aregs[regid - UC_M68K_REG_A0];
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else if (regid >= UC_M68K_REG_D0 && regid <= UC_M68K_REG_D7)
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*(int32_t *)value = M68K_CPU(uc, mycpu)->env.dregs[regid - UC_M68K_REG_D0];
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else {
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switch(regid) {
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default: break;
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case UC_M68K_REG_PC:
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*(int32_t *)value = M68K_CPU(uc, mycpu)->env.pc;
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break;
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}
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}
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return 0;
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}
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#define WRITE_DWORD(x, w) (x = (x & ~0xffffffff) | (w & 0xffffffff))
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#define WRITE_WORD(x, w) (x = (x & ~0xffff) | (w & 0xffff))
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#define WRITE_BYTE_H(x, b) (x = (x & ~0xff00) | (b & 0xff))
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#define WRITE_BYTE_L(x, b) (x = (x & ~0xff) | (b & 0xff))
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int m68k_reg_write(uch handle, unsigned int regid, const void *value)
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{
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struct uc_struct *uc = (struct uc_struct *) handle;
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CPUState *mycpu = first_cpu;
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if (regid >= UC_M68K_REG_A0 && regid <= UC_M68K_REG_A7)
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M68K_CPU(uc, mycpu)->env.aregs[regid - UC_M68K_REG_A0] = *(int32_t *)value;
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else if (regid >= UC_M68K_REG_D0 && regid <= UC_M68K_REG_D7)
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M68K_CPU(uc, mycpu)->env.dregs[regid - UC_M68K_REG_D0] = *(int32_t *)value;
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else {
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switch(regid) {
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default: break;
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case UC_M68K_REG_PC:
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M68K_CPU(uc, mycpu)->env.pc = *(uint32_t *)value;
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break;
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}
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}
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return 0;
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}
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__attribute__ ((visibility ("default")))
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void m68k_uc_init(struct uc_struct* uc)
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{
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register_accel_types(uc);
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m68k_cpu_register_types(uc);
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dummy_m68k_machine_init(uc);
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uc->reg_read = m68k_reg_read;
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uc->reg_write = m68k_reg_write;
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uc->reg_reset = m68k_reg_reset;
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uc->set_pc = m68k_set_pc;
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uc_common_init(uc);
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}
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