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-rw-r--r--py/asmx64.c75
1 files changed, 36 insertions, 39 deletions
diff --git a/py/asmx64.c b/py/asmx64.c
index 8d074dc40..3f111781f 100644
--- a/py/asmx64.c
+++ b/py/asmx64.c
@@ -54,19 +54,21 @@
#define OPCODE_MOV_RM64_TO_R64 (0x8b)
#define OPCODE_LEA_MEM_TO_R64 (0x8d) /* /r */
#define OPCODE_XOR_R64_TO_RM64 (0x31) /* /r */
-#define OPCODE_ADD_R64_TO_RM64 (0x01)
+#define OPCODE_ADD_R64_TO_RM64 (0x01) /* /r */
#define OPCODE_ADD_I32_TO_RM32 (0x81) /* /0 */
#define OPCODE_ADD_I8_TO_RM32 (0x83) /* /0 */
#define OPCODE_SUB_R64_FROM_RM64 (0x29)
#define OPCODE_SUB_I32_FROM_RM64 (0x81) /* /5 */
#define OPCODE_SUB_I8_FROM_RM64 (0x83) /* /5 */
-#define OPCODE_SHL_RM32_BY_I8 (0xc1) /* /4 */
-#define OPCODE_SHR_RM32_BY_I8 (0xc1) /* /5 */
-#define OPCODE_SAR_RM32_BY_I8 (0xc1) /* /7 */
-#define OPCODE_CMP_I32_WITH_RM32 (0x81) /* /7 */
-#define OPCODE_CMP_I8_WITH_RM32 (0x83) /* /7 */
-#define OPCODE_CMP_R64_WITH_RM64 (0x39)
-#define OPCODE_CMP_RM32_WITH_R32 (0x3b)
+//#define OPCODE_SHL_RM32_BY_I8 (0xc1) /* /4 */
+//#define OPCODE_SHR_RM32_BY_I8 (0xc1) /* /5 */
+//#define OPCODE_SAR_RM32_BY_I8 (0xc1) /* /7 */
+#define OPCODE_SHL_RM64_CL (0xd3) /* /4 */
+#define OPCODE_SAR_RM64_CL (0xd3) /* /7 */
+//#define OPCODE_CMP_I32_WITH_RM32 (0x81) /* /7 */
+//#define OPCODE_CMP_I8_WITH_RM32 (0x83) /* /7 */
+#define OPCODE_CMP_R64_WITH_RM64 (0x39) /* /r */
+//#define OPCODE_CMP_RM32_WITH_R32 (0x3b)
#define OPCODE_TEST_R8_WITH_RM8 (0x84) /* /r */
#define OPCODE_JMP_REL8 (0xeb)
#define OPCODE_JMP_REL32 (0xe9)
@@ -253,6 +255,10 @@ STATIC void asm_x64_write_r64_disp(asm_x64_t *as, int r64, int disp_r64, int dis
}
}
+STATIC void asm_x64_generic_r64_r64(asm_x64_t *as, int dest_r64, int src_r64, int op) {
+ asm_x64_write_byte_3(as, REX_PREFIX | REX_W | (src_r64 < 8 ? 0 : REX_R) | (dest_r64 < 8 ? 0 : REX_B), op, MODRM_R64(src_r64) | MODRM_RM_REG | MODRM_RM_R64(dest_r64));
+}
+
void asm_x64_nop(asm_x64_t *as) {
asm_x64_write_byte_1(as, OPCODE_NOP);
}
@@ -290,9 +296,8 @@ STATIC void asm_x64_ret(asm_x64_t *as) {
asm_x64_write_byte_1(as, OPCODE_RET);
}
-void asm_x64_mov_r64_to_r64(asm_x64_t *as, int src_r64, int dest_r64) {
- // use REX prefix for 64 bit operation
- asm_x64_write_byte_3(as, REX_PREFIX | REX_W | (src_r64 < 8 ? 0 : REX_R) | (dest_r64 < 8 ? 0 : REX_B), OPCODE_MOV_R64_TO_RM64, MODRM_R64(src_r64) | MODRM_RM_REG | MODRM_RM_R64(dest_r64));
+void asm_x64_mov_r64_r64(asm_x64_t *as, int dest_r64, int src_r64) {
+ asm_x64_generic_r64_r64(as, dest_r64, src_r64, OPCODE_MOV_R64_TO_RM64);
}
void asm_x64_mov_r8_to_disp(asm_x64_t *as, int src_r64, int dest_r64, int dest_disp) {
@@ -377,30 +382,24 @@ void asm_x64_mov_i64_to_r64_aligned(asm_x64_t *as, int64_t src_i64, int dest_r64
asm_x64_mov_i64_to_r64(as, src_i64, dest_r64);
}
-void asm_x64_xor_r64_to_r64(asm_x64_t *as, int src_r64, int dest_r64) {
- assert(src_r64 < 8);
- assert(dest_r64 < 8);
- asm_x64_write_byte_3(as, REX_PREFIX | REX_W, OPCODE_XOR_R64_TO_RM64, MODRM_R64(src_r64) | MODRM_RM_REG | MODRM_RM_R64(dest_r64));
+void asm_x64_xor_r64_r64(asm_x64_t *as, int dest_r64, int src_r64) {
+ asm_x64_generic_r64_r64(as, dest_r64, src_r64, OPCODE_XOR_R64_TO_RM64);
}
-void asm_x64_add_r64_to_r64(asm_x64_t *as, int src_r64, int dest_r64) {
- assert(src_r64 < 8);
- assert(dest_r64 < 8);
- asm_x64_write_byte_3(as, REX_PREFIX | REX_W, OPCODE_ADD_R64_TO_RM64, MODRM_R64(src_r64) | MODRM_RM_REG | MODRM_RM_R64(dest_r64));
+void asm_x64_shl_r64_cl(asm_x64_t* as, int dest_r64) {
+ asm_x64_generic_r64_r64(as, dest_r64, 4, OPCODE_SHL_RM64_CL);
}
-/*
-void asm_x64_sub_r32_from_r32(asm_x64_t *as, int src_r32, int dest_r32) {
- // defaults to 32 bit operation
- asm_x64_write_byte_2(as, OPCODE_SUB_R64_FROM_RM64, MODRM_R64(src_r32) | MODRM_RM_REG | MODRM_RM_R64(dest_r32));
+void asm_x64_sar_r64_cl(asm_x64_t* as, int dest_r64) {
+ asm_x64_generic_r64_r64(as, dest_r64, 7, OPCODE_SAR_RM64_CL);
}
-*/
-void asm_x64_sub_r64_from_r64(asm_x64_t *as, int src_r64, int dest_r64) {
- // use REX prefix for 64 bit operation
- assert(src_r64 < 8);
- assert(dest_r64 < 8);
- asm_x64_write_byte_3(as, REX_PREFIX | REX_W, OPCODE_SUB_R64_FROM_RM64, MODRM_R64(src_r64) | MODRM_RM_REG | MODRM_RM_R64(dest_r64));
+void asm_x64_add_r64_r64(asm_x64_t *as, int dest_r64, int src_r64) {
+ asm_x64_generic_r64_r64(as, dest_r64, src_r64, OPCODE_ADD_R64_TO_RM64);
+}
+
+void asm_x64_sub_r64_r64(asm_x64_t *as, int dest_r64, int src_r64) {
+ asm_x64_generic_r64_r64(as, dest_r64, src_r64, OPCODE_SUB_R64_FROM_RM64);
}
/*
@@ -417,7 +416,7 @@ void asm_x64_sub_i32_from_r32(asm_x64_t *as, int src_i32, int dest_r32) {
}
*/
-void asm_x64_sub_i32_from_r64(asm_x64_t *as, int src_i32, int dest_r64) {
+STATIC void asm_x64_sub_r64_i32(asm_x64_t *as, int dest_r64, int src_i32) {
assert(dest_r64 < 8);
if (SIGNED_FIT8(src_i32)) {
// use REX prefix for 64 bit operation
@@ -448,9 +447,7 @@ void asm_x64_sar_r32_by_imm(asm_x64_t *as, int r32, int imm) {
*/
void asm_x64_cmp_r64_with_r64(asm_x64_t *as, int src_r64_a, int src_r64_b) {
- assert(src_r64_a < 8);
- assert(src_r64_b < 8);
- asm_x64_write_byte_3(as, REX_PREFIX | REX_W, OPCODE_CMP_R64_WITH_RM64, MODRM_R64(src_r64_a) | MODRM_RM_REG | MODRM_RM_R64(src_r64_b));
+ asm_x64_generic_r64_r64(as, src_r64_b, src_r64_a, OPCODE_CMP_R64_WITH_RM64);
}
/*
@@ -541,12 +538,12 @@ void asm_x64_jcc_label(asm_x64_t *as, int jcc_type, int label) {
void asm_x64_entry(asm_x64_t *as, int num_locals) {
asm_x64_push_r64(as, ASM_X64_REG_RBP);
- asm_x64_mov_r64_to_r64(as, ASM_X64_REG_RSP, ASM_X64_REG_RBP);
+ asm_x64_mov_r64_r64(as, ASM_X64_REG_RBP, ASM_X64_REG_RSP);
if (num_locals < 0) {
num_locals = 0;
}
num_locals |= 1; // make it odd so stack is aligned on 16 byte boundary
- asm_x64_sub_i32_from_r64(as, num_locals * WORD_SIZE, ASM_X64_REG_RSP);
+ asm_x64_sub_r64_i32(as, ASM_X64_REG_RSP, num_locals * WORD_SIZE);
asm_x64_push_r64(as, ASM_X64_REG_RBX);
asm_x64_push_r64(as, ASM_X64_REG_R12);
asm_x64_push_r64(as, ASM_X64_REG_R13);
@@ -587,7 +584,7 @@ void asm_x64_mov_r64_to_local(asm_x64_t *as, int src_r64, int dest_local_num) {
void asm_x64_mov_local_addr_to_r64(asm_x64_t *as, int local_num, int dest_r64) {
int offset = asm_x64_local_offset_from_ebp(as, local_num);
if (offset == 0) {
- asm_x64_mov_r64_to_r64(as, ASM_X64_REG_RBP, dest_r64);
+ asm_x64_mov_r64_r64(as, dest_r64, ASM_X64_REG_RBP);
} else {
asm_x64_lea_disp_to_r64(as, ASM_X64_REG_RBP, offset, dest_r64);
}
@@ -600,7 +597,7 @@ void asm_x64_push_local(asm_x64_t *as, int local_num) {
void asm_x64_push_local_addr(asm_x64_t *as, int local_num, int temp_r64)
{
- asm_x64_mov_r64_to_r64(as, ASM_X64_REG_RBP, temp_r64);
+ asm_x64_mov_r64_r64(as, temp_r64, ASM_X64_REG_RBP);
asm_x64_add_i32_to_r32(as, asm_x64_local_offset_from_ebp(as, local_num), temp_r64);
asm_x64_push_r64(as, temp_r64);
}
@@ -614,7 +611,7 @@ void asm_x64_call(asm_x64_t *as, void* func)
asm_x64_sub_i32_from_r32(as, 8, ASM_X64_REG_RSP);
asm_x64_write_byte_1(as, OPCODE_CALL_REL32);
asm_x64_write_word32(as, func - (void*)(as->code_cur + 4));
- asm_x64_mov_r64_to_r64(as, ASM_X64_REG_RBP, ASM_X64_REG_RSP);
+ asm_x64_mov_r64_r64(as, ASM_X64_REG_RSP, ASM_X64_REG_RBP);
}
void asm_x64_call_i1(asm_x64_t *as, void* func, int i1)
@@ -625,7 +622,7 @@ void asm_x64_call_i1(asm_x64_t *as, void* func, int i1)
asm_x64_write_byte_1(as, OPCODE_CALL_REL32);
asm_x64_write_word32(as, func - (void*)(as->code_cur + 4));
asm_x64_add_i32_to_r32(as, 16, ASM_X64_REG_RSP);
- asm_x64_mov_r64_to_r64(as, ASM_X64_REG_RBP, ASM_X64_REG_RSP);
+ asm_x64_mov_r64_r64(as, ASM_X64_REG_RSP, ASM_X64_REG_RBP);
}
*/
generated by cgit v1.2.3 (git 2.46.0) at 2025-08-09 23:41:00 +0000