These help with decoding/loading ModR/M vector operands; the operand's
register offset is returned, which is suitable for use with gvec
infrastructure.
Signed-off-by: Jan Bobek <jan.bo...@gmail.com>
---
target/i386/translate.c | 47 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 47 insertions(+)
diff --git a/target/i386/translate.c b/target/i386/translate.c
index 9e22eca2dc..7548677e1f 100644
--- a/target/i386/translate.c
+++ b/target/i386/translate.c
@@ -3040,6 +3040,53 @@ static const struct SSEOpHelper_eppi sse_op_table7[256]
= {
[0xdf] = AESNI_OP(aeskeygenassist),
};
+static inline void gen_ld_modrm_PqQq(CPUX86State *env, DisasContext *s, int
modrm,
+ uint32_t* dofs, uint32_t* aofs)
+{
+ const int mod = (modrm >> 6) & 3;
+ const int reg = (modrm >> 3) & 7; /* no REX_R */
+ *dofs = offsetof(CPUX86State, fpregs[reg].mmx);
+
+ if(mod == 3) {
+ const int rm = modrm & 7; /* no REX_B */
+
+ *aofs = offsetof(CPUX86State, fpregs[rm].mmx);
+ } else {
+ *aofs = offsetof(CPUX86State, mmx_t0);
+
+ gen_lea_modrm(env, s, modrm);
+ gen_ldq_env_A0(s, *aofs);
+ }
+}
+
+static inline void gen_ld_modrm_VxWx(CPUX86State *env, DisasContext *s, int
modrm,
+ uint32_t* dofs, uint32_t* aofs)
+{
+ const int mod = (modrm >> 6) & 3;
+ const int reg = ((modrm >> 3) & 7) | REX_R(s);
+ *dofs = offsetof(CPUX86State, xmm_regs[reg]);
+
+ if(mod == 3) {
+ const int rm = (modrm & 7) | REX_B(s);
+
+ *aofs = offsetof(CPUX86State, xmm_regs[rm]);
+ } else {
+ *aofs = offsetof(CPUX86State, xmm_t0);
+
+ gen_lea_modrm(env, s, modrm);
+ gen_ldo_env_A0(s, *aofs); /* FIXME this needs to load 32 bytes for YMM
*/
+ }
+}
+
+static inline void gen_ld_modrm_VxHxWx(CPUX86State *env, DisasContext *s, int
modrm,
+ uint32_t* dofs, uint32_t* aofs,
uint32_t* bofs)
+{
+ assert(s->prefix & PREFIX_VEX);
+
+ gen_ld_modrm_VxWx(env, s, modrm, dofs, bofs);
+ *aofs = offsetof(CPUX86State, xmm_regs[s->vex_v]);
+}
+
static void gen_sse(CPUX86State *env, DisasContext *s, int b)
{
int b1, op1_offset, op2_offset, is_xmm, val;
--
2.20.1
