diff options
Diffstat (limited to 'arch/arm64/include/asm/ptrace.h')
| -rw-r--r-- | arch/arm64/include/asm/ptrace.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/ptrace.h b/arch/arm64/include/asm/ptrace.h index 5db016e6d065..c29d88526405 100644 --- a/arch/arm64/include/asm/ptrace.h +++ b/arch/arm64/include/asm/ptrace.h @@ -61,6 +61,15 @@ #define COMPAT_PT_TEXT_ADDR 0x10000 #define COMPAT_PT_DATA_ADDR 0x10004 #define COMPAT_PT_TEXT_END_ADDR 0x10008 + +/* + * used to skip a system call when tracer changes its number to -1 + * with ptrace(PTRACE_SET_SYSCALL) + */ +#define RET_SKIP_SYSCALL -1 +#define RET_SKIP_SYSCALL_TRACE -2 +#define IS_SKIP_SYSCALL(no) ((int)(no & 0xffffffff) == -1) + #ifndef __ASSEMBLY__ /* sizeof(struct user) for AArch32 */ @@ -178,5 +187,13 @@ extern unsigned long profile_pc(struct pt_regs *regs); #define profile_pc(regs) instruction_pointer(regs) #endif +/* + * True if instr is a 32-bit thumb instruction. This works if instr + * is the first or only half-word of a thumb instruction. It also works + * when instr holds all 32-bits of a wide thumb instruction if stored + * in the form (first_half<<16)|(second_half) + */ +#define is_wide_instruction(instr) ((unsigned)(instr) >= 0xe800) + #endif /* __ASSEMBLY__ */ #endif |