diff options
Diffstat (limited to 'arch/powerpc/include/asm/ptrace.h')
| -rw-r--r-- | arch/powerpc/include/asm/ptrace.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/ptrace.h b/arch/powerpc/include/asm/ptrace.h index 5114ddba6f16..f9c235c1d6ce 100644 --- a/arch/powerpc/include/asm/ptrace.h +++ b/arch/powerpc/include/asm/ptrace.h @@ -22,6 +22,7 @@ #include <linux/err.h> #include <uapi/asm/ptrace.h> #include <asm/asm-const.h> +#include <asm/reg.h> #ifndef __ASSEMBLY__ struct pt_regs @@ -272,6 +273,28 @@ static inline void regs_set_return_value(struct pt_regs *regs, unsigned long rc) regs->gpr[3] = rc; } +static inline bool cpu_has_msr_ri(void) +{ + return !IS_ENABLED(CONFIG_BOOKE) && !IS_ENABLED(CONFIG_40x); +} + +static inline bool regs_is_unrecoverable(struct pt_regs *regs) +{ + return unlikely(cpu_has_msr_ri() && !(regs->msr & MSR_RI)); +} + +static inline void regs_set_recoverable(struct pt_regs *regs) +{ + if (cpu_has_msr_ri()) + regs_set_return_msr(regs, regs->msr | MSR_RI); +} + +static inline void regs_set_unrecoverable(struct pt_regs *regs) +{ + if (cpu_has_msr_ri()) + regs_set_return_msr(regs, regs->msr & ~MSR_RI); +} + #define arch_has_single_step() (1) #define arch_has_block_step() (true) #define ARCH_HAS_USER_SINGLE_STEP_REPORT |