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authorLinus Torvalds <torvalds@linux-foundation.org>2011-07-24 13:20:54 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2011-07-24 13:20:54 -0400
commitb6844e8f64920cdee620157252169ba63afb0c89 (patch)
tree339a447f4d1b6b2a447d10d24de227ddfbd4cc65 /arch/arm/kernel/ptrace.c
parent2f175074e6811974ee77ddeb026f4d21aa3eca4d (diff)
parent3ad55155b222f2a901405dea20ff7c68828ecd92 (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: (237 commits) ARM: 7004/1: fix traps.h compile warnings ARM: 6998/2: kernel: use proper memory barriers for bitops ARM: 6997/1: ep93xx: increase NR_BANKS to 16 for support of 128MB RAM ARM: Fix build errors caused by adding generic macros ARM: CPU hotplug: ensure we migrate all IRQs off a downed CPU ARM: CPU hotplug: pass in proper affinity mask on IRQ migration ARM: GIC: avoid routing interrupts to offline CPUs ARM: CPU hotplug: fix abuse of irqdesc->node ARM: 6981/2: mmci: adjust calculation of f_min ARM: 7000/1: LPAE: Use long long printk format for displaying the pud ARM: 6999/1: head, zImage: Always Enter the kernel in ARM state ARM: btc: avoid invalidating the branch target cache on kernel TLB maintanence ARM: ARM_DMA_ZONE_SIZE is no more ARM: mach-shark: move ARM_DMA_ZONE_SIZE to mdesc->dma_zone_size ARM: mach-sa1100: move ARM_DMA_ZONE_SIZE to mdesc->dma_zone_size ARM: mach-realview: move from ARM_DMA_ZONE_SIZE to mdesc->dma_zone_size ARM: mach-pxa: move from ARM_DMA_ZONE_SIZE to mdesc->dma_zone_size ARM: mach-ixp4xx: move from ARM_DMA_ZONE_SIZE to mdesc->dma_zone_size ARM: mach-h720x: move from ARM_DMA_ZONE_SIZE to mdesc->dma_zone_size ARM: mach-davinci: move from ARM_DMA_ZONE_SIZE to mdesc->dma_zone_size ...
Diffstat (limited to 'arch/arm/kernel/ptrace.c')
-rw-r--r--arch/arm/kernel/ptrace.c28
1 files changed, 3 insertions, 25 deletions
diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index 5c199610719f..2491f3b406bc 100644
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -228,34 +228,12 @@ static struct undef_hook thumb_break_hook = {
228 .fn = break_trap, 228 .fn = break_trap,
229}; 229};
230 230
231static int thumb2_break_trap(struct pt_regs *regs, unsigned int instr)
232{
233 unsigned int instr2;
234 void __user *pc;
235
236 /* Check the second half of the instruction. */
237 pc = (void __user *)(instruction_pointer(regs) + 2);
238
239 if (processor_mode(regs) == SVC_MODE) {
240 instr2 = *(u16 *) pc;
241 } else {
242 get_user(instr2, (u16 __user *)pc);
243 }
244
245 if (instr2 == 0xa000) {
246 ptrace_break(current, regs);
247 return 0;
248 } else {
249 return 1;
250 }
251}
252
253static struct undef_hook thumb2_break_hook = { 231static struct undef_hook thumb2_break_hook = {
254 .instr_mask = 0xffff, 232 .instr_mask = 0xffffffff,
255 .instr_val = 0xf7f0, 233 .instr_val = 0xf7f0a000,
256 .cpsr_mask = PSR_T_BIT, 234 .cpsr_mask = PSR_T_BIT,
257 .cpsr_val = PSR_T_BIT, 235 .cpsr_val = PSR_T_BIT,
258 .fn = thumb2_break_trap, 236 .fn = break_trap,
259}; 237};
260 238
261static int __init ptrace_break_init(void) 239static int __init ptrace_break_init(void)