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-rw-r--r--target-i386/translate.c46
1 files changed, 36 insertions, 10 deletions
diff --git a/target-i386/translate.c b/target-i386/translate.c
index aa985fa9b2..707ebd5ca0 100644
--- a/target-i386/translate.c
+++ b/target-i386/translate.c
@@ -4284,22 +4284,48 @@ static void gen_sse(CPUX86State *env, DisasContext *s, int b,
if (is_xmm) {
op1_offset = offsetof(CPUX86State,xmm_regs[reg]);
if (mod != 3) {
+ int sz = 4;
+
gen_lea_modrm(env, s, modrm);
op2_offset = offsetof(CPUX86State,xmm_t0);
- if (b1 >= 2 && ((b >= 0x50 && b <= 0x5f && b != 0x5b) ||
- b == 0xc2)) {
- /* specific case for SSE single instructions */
+
+ switch (b) {
+ case 0x50 ... 0x5a:
+ case 0x5c ... 0x5f:
+ case 0xc2:
+ /* Most sse scalar operations. */
if (b1 == 2) {
- /* 32 bit access */
- gen_op_ld_v(s, MO_32, cpu_T[0], cpu_A0);
- tcg_gen_st32_tl(cpu_T[0], cpu_env, offsetof(CPUX86State,xmm_t0.XMM_L(0)));
+ sz = 2;
+ } else if (b1 == 3) {
+ sz = 3;
+ }
+ break;
+
+ case 0x2e: /* ucomis[sd] */
+ case 0x2f: /* comis[sd] */
+ if (b1 == 0) {
+ sz = 2;
} else {
- /* 64 bit access */
- gen_ldq_env_A0(s, offsetof(CPUX86State,
- xmm_t0.XMM_D(0)));
+ sz = 3;
}
- } else {
+ break;
+ }
+
+ switch (sz) {
+ case 2:
+ /* 32 bit access */
+ gen_op_ld_v(s, MO_32, cpu_T[0], cpu_A0);
+ tcg_gen_st32_tl(cpu_T[0], cpu_env,
+ offsetof(CPUX86State,xmm_t0.XMM_L(0)));
+ break;
+ case 3:
+ /* 64 bit access */
+ gen_ldq_env_A0(s, offsetof(CPUX86State, xmm_t0.XMM_D(0)));
+ break;
+ default:
+ /* 128 bit access */
gen_ldo_env_A0(s, op2_offset);
+ break;
}
} else {
rm = (modrm & 7) | REX_B(s);