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first shot at getting FPIP working, need to remove all FP control instructions from being updated

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This commit is contained in:
mothran 2015-08-27 21:54:23 -07:00
parent adec227dad
commit 59b09a71bf
2 changed files with 7 additions and 1 deletions
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2
qemu/target-i386/fpu_helper.c
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@ -991,7 +991,7 @@ void helper_fstenv(CPUX86State *env, target_ulong ptr, int data32)
cpu_stl_data(env, ptr, env->fpuc); cpu_stl_data(env, ptr, env->fpuc);
cpu_stl_data(env, ptr + 4, fpus); cpu_stl_data(env, ptr + 4, fpus);
cpu_stl_data(env, ptr + 8, fptag); cpu_stl_data(env, ptr + 8, fptag);
cpu_stl_data(env, ptr + 12, 0); /* fpip */ cpu_stl_data(env, ptr + 12, env->fpip); /* fpip */
cpu_stl_data(env, ptr + 16, 0); /* fpcs */ cpu_stl_data(env, ptr + 16, 0); /* fpcs */
cpu_stl_data(env, ptr + 20, 0); /* fpoo */ cpu_stl_data(env, ptr + 20, 0); /* fpoo */
cpu_stl_data(env, ptr + 24, 0); /* fpos */ cpu_stl_data(env, ptr + 24, 0); /* fpos */

6
qemu/target-i386/translate.c
View file

@ -248,6 +248,11 @@ static void gen_update_cc_op(DisasContext *s)
} }
} }
static void fpu_update_ip(CPUX86State *env)
{
env->fpip = env->eip;
}
#ifdef TARGET_X86_64 #ifdef TARGET_X86_64
#define NB_OP_SIZES 4 #define NB_OP_SIZES 4
@ -6065,6 +6070,7 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s,
gen_exception(s, EXCP07_PREX, pc_start - s->cs_base); gen_exception(s, EXCP07_PREX, pc_start - s->cs_base);
break; break;
} }
fpu_update_ip(env);
modrm = cpu_ldub_code(env, s->pc++); modrm = cpu_ldub_code(env, s->pc++);
mod = (modrm >> 6) & 3; mod = (modrm >> 6) & 3;
rm = modrm & 7; rm = modrm & 7;