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| author | Tiezhu Yang <yangtiezhu@loongson.cn> | 2024-12-02 09:42:08 +0100 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2024-12-02 09:42:08 +0100 |
| commit | c1474bb0b7cff4e8481095bd0618b8f6c2f0aeb4 (patch) | |
| tree | cb0827726360b04b33b76d6b383df091123b6622 /arch/loongarch/include/asm | |
| parent | LoongArch: Add architecture specific huge_pte_clear() (diff) | |
| download | linux-c1474bb0b7cff4e8481095bd0618b8f6c2f0aeb4.tar.xz linux-c1474bb0b7cff4e8481095bd0618b8f6c2f0aeb4.zip | |
LoongArch: BPF: Adjust the parameter of emit_jirl()
The branch instructions beq, bne, blt, bge, bltu, bgeu and jirl belong
to the format reg2i16, but the sequence of oprand is different for the
instruction jirl. So adjust the parameter order of emit_jirl() to make
it more readable correspond with the Instruction Set Architecture manual.
Here are the instruction formats:
beq rj, rd, offs16
bne rj, rd, offs16
blt rj, rd, offs16
bge rj, rd, offs16
bltu rj, rd, offs16
bgeu rj, rd, offs16
jirl rd, rj, offs16
Link: https://loongson.github.io/LoongArch-Documentation/LoongArch-Vol1-EN.html#branch-instructions
Suggested-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch/include/asm')
| -rw-r--r-- | arch/loongarch/include/asm/inst.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/arch/loongarch/include/asm/inst.h b/arch/loongarch/include/asm/inst.h index 944482063f14..3089785ca97e 100644 --- a/arch/loongarch/include/asm/inst.h +++ b/arch/loongarch/include/asm/inst.h @@ -683,7 +683,17 @@ DEF_EMIT_REG2I16_FORMAT(blt, blt_op) DEF_EMIT_REG2I16_FORMAT(bge, bge_op) DEF_EMIT_REG2I16_FORMAT(bltu, bltu_op) DEF_EMIT_REG2I16_FORMAT(bgeu, bgeu_op) -DEF_EMIT_REG2I16_FORMAT(jirl, jirl_op) + +static inline void emit_jirl(union loongarch_instruction *insn, + enum loongarch_gpr rd, + enum loongarch_gpr rj, + int offset) +{ + insn->reg2i16_format.opcode = jirl_op; + insn->reg2i16_format.immediate = offset; + insn->reg2i16_format.rd = rd; + insn->reg2i16_format.rj = rj; +} #define DEF_EMIT_REG2BSTRD_FORMAT(NAME, OP) \ static inline void emit_##NAME(union loongarch_instruction *insn, \ |