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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-17 18:11:49 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-17 18:11:49 -0700 |
| commit | 2a6a432a9ce55876b92f9ea860d7baa05538de16 (patch) | |
| tree | f64431e3f5f105ee350831aef6810281d93e10b1 /arch/arm/include/asm/ptrace.h | |
| parent | arcmsr_hba: Missing slab.h include (diff) | |
| parent | VIDEO: amba clcd: don't disable an already disabled clock (diff) | |
| download | linux-dev-2a6a432a9ce55876b92f9ea860d7baa05538de16.tar.xz linux-dev-2a6a432a9ce55876b92f9ea860d7baa05538de16.zip | |
Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm:
VIDEO: amba clcd: don't disable an already disabled clock
ARM: Tighten check for allowable CPSR values
ARM: 6329/1: wire up sys_accept4() on ARM
ARM: 6328/1: Build with -fno-dwarf2-cfi-asm
ARM: 6326/1: kgdb: fix GDB_MAX_REGS no longer used
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 c974be8913a7..7ce15eb15f72 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; |