diff options
Diffstat (limited to 'py/asmrv32.c')
| -rw-r--r-- | py/asmrv32.c | 22 |
1 files changed, 8 insertions, 14 deletions
diff --git a/py/asmrv32.c b/py/asmrv32.c index 9e4fefec0..1d0cea6c0 100644 --- a/py/asmrv32.c +++ b/py/asmrv32.c @@ -586,13 +586,10 @@ void asm_rv32_emit_store_reg_reg_reg(asm_rv32_t *state, mp_uint_t rd, mp_uint_t } void asm_rv32_meta_comparison_eq(asm_rv32_t *state, mp_uint_t rs1, mp_uint_t rs2, mp_uint_t rd) { - // c.li rd, 1 ; - // beq rs1, rs2, 6 ; PC + 0 - // c.li rd, 0 ; PC + 4 - // ... ; PC + 6 - asm_rv32_opcode_cli(state, rd, 1); - asm_rv32_opcode_beq(state, rs1, rs2, 6); - asm_rv32_opcode_cli(state, rd, 0); + // sub rd, rs1, rs2 + // sltiu rd, rd, 1 + asm_rv32_opcode_sub(state, rd, rs1, rs2); + asm_rv32_opcode_sltiu(state, rd, rd, 1); } void asm_rv32_meta_comparison_ne(asm_rv32_t *state, mp_uint_t rs1, mp_uint_t rs2, mp_uint_t rd) { @@ -608,13 +605,10 @@ void asm_rv32_meta_comparison_lt(asm_rv32_t *state, mp_uint_t rs1, mp_uint_t rs2 } void asm_rv32_meta_comparison_le(asm_rv32_t *state, mp_uint_t rs1, mp_uint_t rs2, mp_uint_t rd, bool unsigned_comparison) { - // c.li rd, 1 ; - // beq rs1, rs2, 8 ; PC + 0 - // slt(u) rd, rs1, rs2 ; PC + 4 - // ... ; PC + 8 - asm_rv32_opcode_cli(state, rd, 1); - asm_rv32_opcode_beq(state, rs1, rs2, 8); - asm_rv32_meta_comparison_lt(state, rs1, rs2, rd, unsigned_comparison); + // slt[u] rd, rs2, rs1 + // xori rd, rd, 1 + asm_rv32_meta_comparison_lt(state, rs2, rs1, rd, unsigned_comparison); + asm_rv32_opcode_xori(state, rd, rd, 1); } #endif // MICROPY_EMIT_RV32 |