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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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5
py/asmxtensa.h
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@@ -211,6 +211,10 @@ static inline void asm_xtensa_op_mull(asm_xtensa_t *as, uint reg_dest, uint reg_
asm_xtensa_op24(as, ASM_XTENSA_ENCODE_RRR(0, 2, 8, reg_dest, reg_src_a, reg_src_b));
}
static inline void asm_xtensa_op_neg(asm_xtensa_t *as, uint reg_dest, uint reg_src) {
asm_xtensa_op24(as, ASM_XTENSA_ENCODE_RRR(0, 0, 6, reg_dest, 0, reg_src));
}
static inline void asm_xtensa_op_or(asm_xtensa_t *as, uint reg_dest, uint reg_src_a, uint reg_src_b) {
asm_xtensa_op24(as, ASM_XTENSA_ENCODE_RRR(0, 0, 2, reg_dest, reg_src_a, reg_src_b));
}
@@ -371,6 +375,7 @@ void asm_xtensa_call_ind_win(asm_xtensa_t *as, uint idx);
#define ASM_MOV_REG_LOCAL_ADDR(as, reg_dest, local_num) asm_xtensa_mov_reg_local_addr((as), (reg_dest), ASM_NUM_REGS_SAVED + (local_num))
#define ASM_MOV_REG_PCREL(as, reg_dest, label) asm_xtensa_mov_reg_pcrel((as), (reg_dest), (label))
#define ASM_NEG_REG(as, reg_dest) asm_xtensa_op_neg((as), (reg_dest), (reg_dest))
#define ASM_LSL_REG_REG(as, reg_dest, reg_shift) \
do { \
asm_xtensa_op_ssl((as), (reg_shift)); \