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py/asm: Add ASM_NOT_REG and ASM_NEG_REG macros for unary ops.

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ASM_NOT_REG is optional, it can be synthesised by xor(reg, -1).
ASM_NEG_REG can also be synthesised with a subtraction, but most
architectures have a dedicated instruction for it.

Signed-off-by: Damien George <damien@micropython.org>
This commit is contained in:
Damien George
2024-03-18 12:29:11 +11:00
parent d92dff881c
commit f52b0d0ff1
8 changed files with 61 additions and 0 deletions
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10
py/asmx64.c
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@@ -54,6 +54,8 @@
#define OPCODE_MOVZX_RM8_TO_R64 (0xb6) /* 0x0f 0xb6/r */
#define OPCODE_MOVZX_RM16_TO_R64 (0xb7) /* 0x0f 0xb7/r */
#define OPCODE_LEA_MEM_TO_R64 (0x8d) /* /r */
#define OPCODE_NOT_RM64 (0xf7) /* /2 */
#define OPCODE_NEG_RM64 (0xf7) /* /3 */
#define OPCODE_AND_R64_TO_RM64 (0x21) /* /r */
#define OPCODE_OR_R64_TO_RM64 (0x09) /* /r */
#define OPCODE_XOR_R64_TO_RM64 (0x31) /* /r */
@@ -362,6 +364,14 @@ void asm_x64_mov_i64_to_r64_optimised(asm_x64_t *as, int64_t src_i64, int dest_r
}
}
void asm_x64_not_r64(asm_x64_t *as, int dest_r64) {
asm_x64_generic_r64_r64(as, dest_r64, 2, OPCODE_NOT_RM64);
}
void asm_x64_neg_r64(asm_x64_t *as, int dest_r64) {
asm_x64_generic_r64_r64(as, dest_r64, 3, OPCODE_NEG_RM64);
}
void asm_x64_and_r64_r64(asm_x64_t *as, int dest_r64, int src_r64) {
asm_x64_generic_r64_r64(as, dest_r64, src_r64, OPCODE_AND_R64_TO_RM64);
}