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Added start in mips16 mode support, and unit test for it - on dev branch (#2089)

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Co-authored-by: ZakDanger <ZakDanger@users.noreply.github.com>
This commit is contained in:
ZakDanger
2025-01-19 20:35:40 +11:00
committed by GitHub
parent 7f6dcc7539
commit d7c0497ee3
2 changed files with 40 additions and 8 deletions
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17
qemu/target/mips/unicorn.c
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@@ -19,12 +19,18 @@ MIPSCPU *cpu_mips_init(struct uc_struct *uc);
static void mips_set_pc(struct uc_struct *uc, uint64_t address)
{
((CPUMIPSState *)uc->cpu->env_ptr)->active_tc.PC = address;
((CPUMIPSState *)uc->cpu->env_ptr)->active_tc.PC = address & ~(uint64_t )1ULL;
if (address & 1) {
((CPUMIPSState *)uc->cpu->env_ptr)->hflags |= MIPS_HFLAG_M16;
} else {
((CPUMIPSState *)uc->cpu->env_ptr)->hflags &= ~(MIPS_HFLAG_M16);
}
}
static uint64_t mips_get_pc(struct uc_struct *uc)
{
return ((CPUMIPSState *)uc->cpu->env_ptr)->active_tc.PC;
return ((CPUMIPSState *)uc->cpu->env_ptr)->active_tc.PC |
!!(((CPUMIPSState *)uc->cpu->env_ptr)->hflags & (MIPS_HFLAG_M16));
}
static void mips_release(void *ctx)
@@ -128,7 +134,12 @@ uc_err reg_write(void *_env, int mode, unsigned int regid, const void *value,
break;
case UC_MIPS_REG_PC:
CHECK_REG_TYPE(mipsreg_t);
env->active_tc.PC = *(mipsreg_t *)value;
env->active_tc.PC = *(mipsreg_t *)value & ~1ULL;
if ((*(uint32_t *)value & 1)) {
env->hflags |= MIPS_HFLAG_M16;
} else {
env->hflags &= ~(MIPS_HFLAG_M16);
}
*setpc = 1;
break;
case UC_MIPS_REG_CP0_CONFIG3: