diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-01 09:15:15 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-01 09:15:15 -0800 |
commit | ac0f6f927db539e03e1f3f61bcd4ed57d5cde7a9 (patch) | |
tree | 816e5ac643b15c2050c64a7075f0f7e13d86ea09 /arch/arm/kernel/ptrace.c | |
parent | b1bf9368407ae7e89d8a005bb40beb70a41df539 (diff) | |
parent | 9f33be2c3a80bdc2cc08342dd77fac87652e0548 (diff) |
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (100 commits)
ARM: Eliminate decompressor -Dstatic= PIC hack
ARM: 5958/1: ARM: U300: fix inverted clk round rate
ARM: 5956/1: misplaced parentheses
ARM: 5955/1: ep93xx: move timer defines into core.c and document
ARM: 5954/1: ep93xx: move gpio interrupt support to gpio.c
ARM: 5953/1: ep93xx: fix broken build of clock.c
ARM: 5952/1: ARM: MM: Add ARM_L1_CACHE_SHIFT_6 for handle inside each ARCH Kconfig
ARM: 5949/1: NUC900 add gpio virtual memory map
ARM: 5948/1: Enable timer0 to time4 clock support for nuc910
ARM: 5940/2: ARM: MMCI: remove custom DBG macro and printk
ARM: make_coherent(): fix problems with highpte, part 2
MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself
ARM: 5945/1: ep93xx: include correct irq.h in core.c
ARM: 5933/1: amba-pl011: support hardware flow control
ARM: 5930/1: Add PKMAP area description to memory.txt.
ARM: 5929/1: Add checks to detect overlap of memory regions.
ARM: 5928/1: Change type of VMALLOC_END to unsigned long.
ARM: 5927/1: Make delimiters of DMA area globally visibly.
ARM: 5926/1: Add "Virtual kernel memory..." printout.
ARM: 5920/1: OMAP4: Enable L2 Cache
...
Fix up trivial conflict in arch/arm/mach-mx25/clock.c
Diffstat (limited to 'arch/arm/kernel/ptrace.c')
-rw-r--r-- | arch/arm/kernel/ptrace.c | 53 |
1 files changed, 35 insertions, 18 deletions
diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c index a2ea3854cb3..08f899fb76a 100644 --- a/arch/arm/kernel/ptrace.c +++ b/arch/arm/kernel/ptrace.c @@ -499,10 +499,41 @@ static struct undef_hook thumb_break_hook = { .fn = break_trap, }; +static int thumb2_break_trap(struct pt_regs *regs, unsigned int instr) +{ + unsigned int instr2; + void __user *pc; + + /* Check the second half of the instruction. */ + pc = (void __user *)(instruction_pointer(regs) + 2); + + if (processor_mode(regs) == SVC_MODE) { + instr2 = *(u16 *) pc; + } else { + get_user(instr2, (u16 __user *)pc); + } + + if (instr2 == 0xa000) { + ptrace_break(current, regs); + return 0; + } else { + return 1; + } +} + +static struct undef_hook thumb2_break_hook = { + .instr_mask = 0xffff, + .instr_val = 0xf7f0, + .cpsr_mask = PSR_T_BIT, + .cpsr_val = PSR_T_BIT, + .fn = thumb2_break_trap, +}; + static int __init ptrace_break_init(void) { register_undef_hook(&arm_break_hook); register_undef_hook(&thumb_break_hook); + register_undef_hook(&thumb2_break_hook); return 0; } @@ -669,7 +700,7 @@ static int ptrace_getvfpregs(struct task_struct *tsk, void __user *data) union vfp_state *vfp = &thread->vfpstate; struct user_vfp __user *ufp = data; - vfp_sync_state(thread); + vfp_sync_hwstate(thread); /* copy the floating point registers */ if (copy_to_user(&ufp->fpregs, &vfp->hard.fpregs, @@ -692,7 +723,7 @@ static int ptrace_setvfpregs(struct task_struct *tsk, void __user *data) union vfp_state *vfp = &thread->vfpstate; struct user_vfp __user *ufp = data; - vfp_sync_state(thread); + vfp_sync_hwstate(thread); /* copy the floating point registers */ if (copy_from_user(&vfp->hard.fpregs, &ufp->fpregs, @@ -703,6 +734,8 @@ static int ptrace_setvfpregs(struct task_struct *tsk, void __user *data) if (get_user(vfp->hard.fpscr, &ufp->fpscr)) return -EFAULT; + vfp_flush_hwstate(thread); + return 0; } #endif @@ -712,26 +745,10 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) int ret; switch (request) { - /* - * read word at location "addr" in the child process. - */ - case PTRACE_PEEKTEXT: - case PTRACE_PEEKDATA: - ret = generic_ptrace_peekdata(child, addr, data); - break; - case PTRACE_PEEKUSR: ret = ptrace_read_user(child, addr, (unsigned long __user *)data); break; - /* - * write the word at location addr. - */ - case PTRACE_POKETEXT: - case PTRACE_POKEDATA: - ret = generic_ptrace_pokedata(child, addr, data); - break; - case PTRACE_POKEUSR: ret = ptrace_write_user(child, addr, data); break; |