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| author | Takashi Iwai <tiwai@suse.de> | 2010-09-03 22:38:52 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2010-09-03 22:38:52 +0200 |
| commit | 68885a3ff38ed51fa02f241feb405c9922a90ee0 (patch) | |
| tree | 2fc626df39d5e0e1f6b065238141f7d49187c737 /arch/arm/include/asm/ptrace.h | |
| parent | 7b28079b3284ccb15ad4f003fb7073890600d0c1 (diff) | |
| parent | a2acad8298a42b7be684a32fafaf83332bba9c2b (diff) | |
| download | kernel_samsung_crespo-68885a3ff38ed51fa02f241feb405c9922a90ee0.zip kernel_samsung_crespo-68885a3ff38ed51fa02f241feb405c9922a90ee0.tar.gz kernel_samsung_crespo-68885a3ff38ed51fa02f241feb405c9922a90ee0.tar.bz2 | |
Merge branch 'fix/misc' into topic/misc
Diffstat (limited to 'arch/arm/include/asm/ptrace.h')
| -rw-r--r-- | arch/arm/include/asm/ptrace.h | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/arch/arm/include/asm/ptrace.h b/arch/arm/include/asm/ptrace.h index c974be8..7ce15eb 100644 --- a/arch/arm/include/asm/ptrace.h +++ b/arch/arm/include/asm/ptrace.h @@ -158,15 +158,24 @@ struct pt_regs { */ static inline int valid_user_regs(struct pt_regs *regs) { - if (user_mode(regs) && (regs->ARM_cpsr & PSR_I_BIT) == 0) { - regs->ARM_cpsr &= ~(PSR_F_BIT | PSR_A_BIT); - return 1; + unsigned long mode = regs->ARM_cpsr & MODE_MASK; + + /* + * Always clear the F (FIQ) and A (delayed abort) bits + */ + regs->ARM_cpsr &= ~(PSR_F_BIT | PSR_A_BIT); + + if ((regs->ARM_cpsr & PSR_I_BIT) == 0) { + if (mode == USR_MODE) + return 1; + if (elf_hwcap & HWCAP_26BIT && mode == USR26_MODE) + return 1; } /* * Force CPSR to something logical... */ - regs->ARM_cpsr &= PSR_f | PSR_s | (PSR_x & ~PSR_A_BIT) | PSR_T_BIT | MODE32_BIT; + regs->ARM_cpsr &= PSR_f | PSR_s | PSR_x | PSR_T_BIT | MODE32_BIT; if (!(elf_hwcap & HWCAP_26BIT)) regs->ARM_cpsr |= USR_MODE; |