diff mbox series

[RFC,v2,27/39] target/i386: introduce RdMw operand

Message ID 20190810041255.6820-28-jan.bobek@gmail.com (mailing list archive)
State New, archived
Headers show
Series rewrite MMX/SSE instruction translation | expand

Commit Message

Jan Bobek Aug. 10, 2019, 4:12 a.m. UTC 
The PINSRW family of instructions have a peculiar second operand:
32-bit general-purpose register file is addressed, but if the operand
is indirect, only 16 bits are loaded from memory. Reflect this by the
RdMw operand.

Signed-off-by: Jan Bobek <jan.bobek@gmail.com>
---
 target/i386/translate.c | 6 ++++++
 1 file changed, 6 insertions(+)
diff mbox series

Patch

diff --git a/target/i386/translate.c b/target/i386/translate.c
index 0e57d5f049..9896f1c99e 100644
--- a/target/i386/translate.c
+++ b/target/i386/translate.c
@@ -4777,6 +4777,9 @@  INSNOP(Rq, TCGv_i64, INSNOP_INIT_FAIL,
 #endif /* !TARGET_X86_64 */
 
 #ifdef TARGET_X86_64
+INSNOP_LDST(RdMw, Rd, Mw, s->tmp3_i32,
+            tcg_gen_qemu_ld_i32(reg, ptr, s->mem_index, MO_LEUW),
+            tcg_gen_qemu_st_i32(reg, ptr, s->mem_index, MO_LEUW))
 INSNOP_LDST(RdMd, Rd, Md, s->tmp3_i32,
             tcg_gen_qemu_ld_i32(reg, ptr, s->mem_index, MO_LEUL),
             tcg_gen_qemu_st_i32(reg, ptr, s->mem_index, MO_LEUL))
@@ -4784,6 +4787,9 @@  INSNOP_LDST(RqMq, Rq, Mq, s->T0,
             tcg_gen_qemu_ld_i64(reg, ptr, s->mem_index, MO_LEQ),
             tcg_gen_qemu_st_i64(reg, ptr, s->mem_index, MO_LEQ))
 #else /* !TARGET_X86_64 */
+INSNOP_LDST(RdMw, Rd, Md, s->T0,
+            tcg_gen_qemu_ld_i32(reg, ptr, s->mem_index, MO_LEUW),
+            tcg_gen_qemu_st_i32(reg, ptr, s->mem_index, MO_LEUW))
 INSNOP_LDST(RdMd, Rd, Md, s->T0,
             tcg_gen_qemu_ld_i32(reg, ptr, s->mem_index, MO_LEUL),
             tcg_gen_qemu_st_i32(reg, ptr, s->mem_index, MO_LEUL))