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| author | Tiezhu Yang <yangtiezhu@loongson.cn> | 2023-02-25 10:52:57 +0300 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2023-02-25 17:12:17 +0300 |
| commit | 9b3441a6b0e1ed4796e7f5a8586c4d6023c4e3ab (patch) | |
| tree | 6797eb04b76a2228e91a75c5e83e6e7564d1e140 /arch/loongarch/include/asm/inst.h | |
| parent | 424421a7f34c1222d20a6c279f13b9caa71ecc83 (diff) | |
| download | linux-9b3441a6b0e1ed4796e7f5a8586c4d6023c4e3ab.tar.xz | |
LoongArch: Simulate branch and PC* instructions
According to LoongArch Reference Manual, simulate branch and PC*
instructions, this is preparation for later patch.
Link: https://loongson.github.io/LoongArch-Documentation/LoongArch-Vol1-EN.html#branch-instructions
Link: https://loongson.github.io/LoongArch-Documentation/LoongArch-Vol1-EN.html#_pcaddi_pcaddu121_pcaddu18l_pcalau12i
Tested-by: Jeff Xie <xiehuan09@gmail.com>
Co-developed-by: Jinyang He <hejinyang@loongson.cn>
Signed-off-by: Jinyang He <hejinyang@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/inst.h')
| -rw-r--r-- | arch/loongarch/include/asm/inst.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/loongarch/include/asm/inst.h b/arch/loongarch/include/asm/inst.h index 36cc5eb4f852..3ade9ff2bb8f 100644 --- a/arch/loongarch/include/asm/inst.h +++ b/arch/loongarch/include/asm/inst.h @@ -7,6 +7,7 @@ #include <linux/types.h> #include <asm/asm.h> +#include <asm/ptrace.h> #define INSN_NOP 0x03400000 #define INSN_BREAK 0x002a0000 @@ -32,6 +33,7 @@ enum reg1i20_op { lu12iw_op = 0x0a, lu32id_op = 0x0b, pcaddi_op = 0x0c, + pcalau12i_op = 0x0d, pcaddu12i_op = 0x0e, pcaddu18i_op = 0x0f, }; @@ -389,6 +391,9 @@ static inline bool is_self_loop_ins(union loongarch_instruction *ip, struct pt_r return false; } +void simu_pc(struct pt_regs *regs, union loongarch_instruction insn); +void simu_branch(struct pt_regs *regs, union loongarch_instruction insn); + int larch_insn_read(void *addr, u32 *insnp); int larch_insn_write(void *addr, u32 insn); int larch_insn_patch_text(void *addr, u32 insn); |