diff options
| -rw-r--r-- | py/asmx64.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/py/asmx64.c b/py/asmx64.c index 3f111781f2..bca825b3c7 100644 --- a/py/asmx64.c +++ b/py/asmx64.c @@ -311,9 +311,12 @@ void asm_x64_mov_r8_to_disp(asm_x64_t *as, int src_r64, int dest_r64, int dest_d } void asm_x64_mov_r16_to_disp(asm_x64_t *as, int src_r64, int dest_r64, int dest_disp) { - assert(src_r64 < 8); assert(dest_r64 < 8); - asm_x64_write_byte_2(as, OP_SIZE_PREFIX, OPCODE_MOV_R64_TO_RM64); + if (src_r64 < 8) { + asm_x64_write_byte_2(as, OP_SIZE_PREFIX, OPCODE_MOV_R64_TO_RM64); + } else { + asm_x64_write_byte_3(as, OP_SIZE_PREFIX, REX_PREFIX | REX_R, OPCODE_MOV_R64_TO_RM64); + } asm_x64_write_r64_disp(as, src_r64, dest_r64, dest_disp); } |