[PATCH v6 05/33] arm64: ptrace: Use constants for compat register numbers
From: Steffen Eiden <seiden@linux.ibm.com>
Date: 2026-08-12 15:37:01
Also in:
kvm, kvmarm, linux-s390, lkml
Subsystem:
arm64 port (aarch64 architecture), ptrace support, the rest · Maintainers:
Catalin Marinas, Will Deacon, Oleg Nesterov, Linus Torvalds
Define an enum to determine the register number for the mapping from AArch32 and AArch64 registers. This allows for a more flexible use of the register mappings. Signed-off-by: Steffen Eiden <seiden@linux.ibm.com> --- arch/arm64/include/asm/ptrace.h | 60 ++++++++++++++++++++++----------- 1 file changed, 41 insertions(+), 19 deletions(-)
diff --git a/arch/arm64/include/asm/ptrace.h b/arch/arm64/include/asm/ptrace.h
index f7dc5fb9427d..49a83a0636b9 100644
--- a/arch/arm64/include/asm/ptrace.h
+++ b/arch/arm64/include/asm/ptrace.h@@ -102,26 +102,48 @@ #define COMPAT_USER_SZ 296 /* Architecturally defined mapping between AArch32 and AArch64 registers */ +enum { + __compat_fp = 11, + __compat_sp = 13, + __compat_lr = 14, + __compat_sp_hyp = 15, + __compat_lr_irq = 16, + __compat_sp_irq = 17, + __compat_lr_svc = 18, + __compat_sp_svc = 19, + __compat_lr_abt = 20, + __compat_sp_abt = 21, + __compat_lr_und = 22, + __compat_sp_und = 23, + __compat_r8_fiq = 24, + __compat_r9_fiq = 25, + __compat_r10_fiq = 26, + __compat_r11_fiq = 27, + __compat_r12_fiq = 28, + __compat_sp_fiq = 29, + __compat_lr_fiq = 30, +}; + #define compat_usr(x) regs[(x)] -#define compat_fp regs[11] -#define compat_sp regs[13] -#define compat_lr regs[14] -#define compat_sp_hyp regs[15] -#define compat_lr_irq regs[16] -#define compat_sp_irq regs[17] -#define compat_lr_svc regs[18] -#define compat_sp_svc regs[19] -#define compat_lr_abt regs[20] -#define compat_sp_abt regs[21] -#define compat_lr_und regs[22] -#define compat_sp_und regs[23] -#define compat_r8_fiq regs[24] -#define compat_r9_fiq regs[25] -#define compat_r10_fiq regs[26] -#define compat_r11_fiq regs[27] -#define compat_r12_fiq regs[28] -#define compat_sp_fiq regs[29] -#define compat_lr_fiq regs[30] +#define compat_fp regs[__compat_fp] +#define compat_sp regs[__compat_sp] +#define compat_lr regs[__compat_lr] +#define compat_sp_hyp regs[__compat_sp_hyp] +#define compat_lr_irq regs[__compat_lr_irq] +#define compat_sp_irq regs[__compat_sp_irq] +#define compat_lr_svc regs[__compat_lr_svc] +#define compat_sp_svc regs[__compat_sp_svc] +#define compat_lr_abt regs[__compat_lr_abt] +#define compat_sp_abt regs[__compat_sp_abt] +#define compat_lr_und regs[__compat_lr_und] +#define compat_sp_und regs[__compat_sp_und] +#define compat_r8_fiq regs[__compat_r8_fiq] +#define compat_r9_fiq regs[__compat_r9_fiq] +#define compat_r10_fiq regs[__compat_r10_fiq] +#define compat_r11_fiq regs[__compat_r11_fiq] +#define compat_r12_fiq regs[__compat_r12_fiq] +#define compat_sp_fiq regs[__compat_sp_fiq] +#define compat_lr_fiq regs[__compat_lr_fiq] static inline unsigned long compat_psr_to_pstate(const unsigned long psr) {
--
2.53.0