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py: Implement native multiply operation in viper emitter.

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Damien George
2015-06-04 14:00:29 +00:00
parent 4d9cad180d
commit 567b349c2b
9 changed files with 56 additions and 0 deletions
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5
py/asmx86.c
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@@ -369,6 +369,11 @@ STATIC void asm_x86_sub_r32_i32(asm_x86_t *as, int dest_r32, int src_i32) {
}
}
void asm_x86_mul_r32_r32(asm_x86_t *as, int dest_r32, int src_r32) {
// imul reg32, reg/mem32 -- 0x0f 0xaf /r
asm_x86_write_byte_3(as, 0x0f, 0xaf, MODRM_R32(dest_r32) | MODRM_RM_REG | MODRM_RM_R32(src_r32));
}
#if 0
/* shifts not tested */
void asm_x86_shl_r32_by_imm(asm_x86_t *as, int r32, int imm) {