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target-alpha: Swap shadow registers moving to/from PALmode.

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Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2011-04-18 14:07:59 -07:00 committed by Richard Henderson
parent 3a6fa678bf
commit 21d2beaaef
3 changed files with 41 additions and 2 deletions
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1
target-alpha/cpu.h
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@ -416,6 +416,7 @@ void do_interrupt (CPUState *env);
uint64_t cpu_alpha_load_fpcr (CPUState *env);
void cpu_alpha_store_fpcr (CPUState *env, uint64_t val);
extern void swap_shadow_regs(CPUState *env);
static inline void cpu_get_tb_cpu_state(CPUState *env, target_ulong *pc,
target_ulong *cs_base, int *flags)

37
target-alpha/helper.c
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@ -168,6 +168,38 @@ int cpu_alpha_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
return 1;
}
#else
void swap_shadow_regs(CPUState *env)
{
uint64_t i0, i1, i2, i3, i4, i5, i6, i7;
i0 = env->ir[8];
i1 = env->ir[9];
i2 = env->ir[10];
i3 = env->ir[11];
i4 = env->ir[12];
i5 = env->ir[13];
i6 = env->ir[14];
i7 = env->ir[25];
env->ir[8] = env->shadow[0];
env->ir[9] = env->shadow[1];
env->ir[10] = env->shadow[2];
env->ir[11] = env->shadow[3];
env->ir[12] = env->shadow[4];
env->ir[13] = env->shadow[5];
env->ir[14] = env->shadow[6];
env->ir[25] = env->shadow[7];
env->shadow[0] = i0;
env->shadow[1] = i1;
env->shadow[2] = i2;
env->shadow[3] = i3;
env->shadow[4] = i4;
env->shadow[5] = i5;
env->shadow[6] = i6;
env->shadow[7] = i7;
}
target_phys_addr_t cpu_get_phys_page_debug (CPUState *env, target_ulong addr)
{
return -1;
@ -290,7 +322,10 @@ void do_interrupt (CPUState *env)
env->pc = env->palbr + i;
/* Switch to PALmode. */
env->pal_mode = 1;
if (!env->pal_mode) {
env->pal_mode = 1;
swap_shadow_regs(env);
}
#endif /* !USER_ONLY */
}

5
target-alpha/op_helper.c
View File

@ -1189,9 +1189,12 @@ uint64_t helper_cvtqg (uint64_t a)
void helper_hw_ret (uint64_t a)
{
env->pc = a & ~3;
env->pal_mode = a & 1;
env->intr_flag = 0;
env->lock_addr = -1;
if ((a & 1) == 0) {
env->pal_mode = 0;
swap_shadow_regs(env);
}
}
#endif