diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-25 14:51:49 (GMT) |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-25 14:51:49 (GMT) |
commit | 1dfd166e93f98892aa4427069a23ed73259983c8 (patch) | |
tree | c70a347b963091b99bd16842537153fa36e5c0e9 /arch/sh/kernel/kprobes.c | |
parent | 8e775167d54e6521e7cdbc03ee7ec42a8c67b49a (diff) | |
parent | 8df399018df120d28f89fda6f2515cc6e096e43d (diff) | |
download | linux-fsl-qoriq-1dfd166e93f98892aa4427069a23ed73259983c8.tar.xz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (110 commits)
sh: i2c-sh7760: Replase from ctrl_* to __raw_*
sh: clkfwk: Shuffle around to match the intc split up.
sh: clkfwk: modify for_each_frequency end condition
sh: fix clk_get() error handling
sh: clkfwk: Fix fault in frequency iterator.
sh: clkfwk: Add a helper for rate rounding by divisor ranges.
sh: clkfwk: Abstract rate rounding helper.
sh: clkfwk: support clock remapping.
sh: pci: Convert to upper/lower_32_bits() helpers.
sh: mach-sdk7786: Add support for the FPGA SRAM.
sh: Provide a generic SRAM pool for tiny memories.
sh: pci: Support secondary FPGA-driven PCIe clocks on SDK7786.
sh: pci: Support slot 4 routing on SDK7786.
sh: Fix up PMB locking.
sh: mach-sdk7786: Add support for fpga gpios.
sh: use pr_fmt for clock framework, too.
sh: remove name and id from struct clk
sh: free-without-alloc fix for sh_mobile_lcdcfb
sh: perf: Set up perf_max_events.
sh: perf: Support SH-X3 hardware counters.
...
Fix up trivial conflicts (perf_max_events got removed) in arch/sh/kernel/perf_event.c
Diffstat (limited to 'arch/sh/kernel/kprobes.c')
-rw-r--r-- | arch/sh/kernel/kprobes.c | 100 |
1 files changed, 50 insertions, 50 deletions
diff --git a/arch/sh/kernel/kprobes.c b/arch/sh/kernel/kprobes.c index 4049d99..1208b09 100644 --- a/arch/sh/kernel/kprobes.c +++ b/arch/sh/kernel/kprobes.c @@ -20,9 +20,9 @@ DEFINE_PER_CPU(struct kprobe *, current_kprobe) = NULL; DEFINE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk); -static struct kprobe saved_current_opcode; -static struct kprobe saved_next_opcode; -static struct kprobe saved_next_opcode2; +static DEFINE_PER_CPU(struct kprobe, saved_current_opcode); +static DEFINE_PER_CPU(struct kprobe, saved_next_opcode); +static DEFINE_PER_CPU(struct kprobe, saved_next_opcode2); #define OPCODE_JMP(x) (((x) & 0xF0FF) == 0x402b) #define OPCODE_JSR(x) (((x) & 0xF0FF) == 0x400b) @@ -102,16 +102,21 @@ int __kprobes kprobe_handle_illslot(unsigned long pc) void __kprobes arch_remove_kprobe(struct kprobe *p) { - if (saved_next_opcode.addr != 0x0) { + struct kprobe *saved = &__get_cpu_var(saved_next_opcode); + + if (saved->addr) { arch_disarm_kprobe(p); - arch_disarm_kprobe(&saved_next_opcode); - saved_next_opcode.addr = 0x0; - saved_next_opcode.opcode = 0x0; - - if (saved_next_opcode2.addr != 0x0) { - arch_disarm_kprobe(&saved_next_opcode2); - saved_next_opcode2.addr = 0x0; - saved_next_opcode2.opcode = 0x0; + arch_disarm_kprobe(saved); + + saved->addr = NULL; + saved->opcode = 0; + + saved = &__get_cpu_var(saved_next_opcode2); + if (saved->addr) { + arch_disarm_kprobe(saved); + + saved->addr = NULL; + saved->opcode = 0; } } } @@ -141,57 +146,59 @@ static void __kprobes set_current_kprobe(struct kprobe *p, struct pt_regs *regs, */ static void __kprobes prepare_singlestep(struct kprobe *p, struct pt_regs *regs) { - kprobe_opcode_t *addr = NULL; - saved_current_opcode.addr = (kprobe_opcode_t *) (regs->pc); - addr = saved_current_opcode.addr; + __get_cpu_var(saved_current_opcode).addr = (kprobe_opcode_t *)regs->pc; if (p != NULL) { + struct kprobe *op1, *op2; + arch_disarm_kprobe(p); + op1 = &__get_cpu_var(saved_next_opcode); + op2 = &__get_cpu_var(saved_next_opcode2); + if (OPCODE_JSR(p->opcode) || OPCODE_JMP(p->opcode)) { unsigned int reg_nr = ((p->opcode >> 8) & 0x000F); - saved_next_opcode.addr = - (kprobe_opcode_t *) regs->regs[reg_nr]; + op1->addr = (kprobe_opcode_t *) regs->regs[reg_nr]; } else if (OPCODE_BRA(p->opcode) || OPCODE_BSR(p->opcode)) { unsigned long disp = (p->opcode & 0x0FFF); - saved_next_opcode.addr = + op1->addr = (kprobe_opcode_t *) (regs->pc + 4 + disp * 2); } else if (OPCODE_BRAF(p->opcode) || OPCODE_BSRF(p->opcode)) { unsigned int reg_nr = ((p->opcode >> 8) & 0x000F); - saved_next_opcode.addr = + op1->addr = (kprobe_opcode_t *) (regs->pc + 4 + regs->regs[reg_nr]); } else if (OPCODE_RTS(p->opcode)) { - saved_next_opcode.addr = (kprobe_opcode_t *) regs->pr; + op1->addr = (kprobe_opcode_t *) regs->pr; } else if (OPCODE_BF(p->opcode) || OPCODE_BT(p->opcode)) { unsigned long disp = (p->opcode & 0x00FF); /* case 1 */ - saved_next_opcode.addr = p->addr + 1; + op1->addr = p->addr + 1; /* case 2 */ - saved_next_opcode2.addr = + op2->addr = (kprobe_opcode_t *) (regs->pc + 4 + disp * 2); - saved_next_opcode2.opcode = *(saved_next_opcode2.addr); - arch_arm_kprobe(&saved_next_opcode2); + op2->opcode = *(op2->addr); + arch_arm_kprobe(op2); } else if (OPCODE_BF_S(p->opcode) || OPCODE_BT_S(p->opcode)) { unsigned long disp = (p->opcode & 0x00FF); /* case 1 */ - saved_next_opcode.addr = p->addr + 2; + op1->addr = p->addr + 2; /* case 2 */ - saved_next_opcode2.addr = + op2->addr = (kprobe_opcode_t *) (regs->pc + 4 + disp * 2); - saved_next_opcode2.opcode = *(saved_next_opcode2.addr); - arch_arm_kprobe(&saved_next_opcode2); + op2->opcode = *(op2->addr); + arch_arm_kprobe(op2); } else { - saved_next_opcode.addr = p->addr + 1; + op1->addr = p->addr + 1; } - saved_next_opcode.opcode = *(saved_next_opcode.addr); - arch_arm_kprobe(&saved_next_opcode); + op1->opcode = *(op1->addr); + arch_arm_kprobe(op1); } } @@ -376,21 +383,23 @@ static int __kprobes post_kprobe_handler(struct pt_regs *regs) cur->post_handler(cur, regs, 0); } - if (saved_next_opcode.addr != 0x0) { - arch_disarm_kprobe(&saved_next_opcode); - saved_next_opcode.addr = 0x0; - saved_next_opcode.opcode = 0x0; + p = &__get_cpu_var(saved_next_opcode); + if (p->addr) { + arch_disarm_kprobe(p); + p->addr = NULL; + p->opcode = 0; - addr = saved_current_opcode.addr; - saved_current_opcode.addr = 0x0; + addr = __get_cpu_var(saved_current_opcode).addr; + __get_cpu_var(saved_current_opcode).addr = NULL; p = get_kprobe(addr); arch_arm_kprobe(p); - if (saved_next_opcode2.addr != 0x0) { - arch_disarm_kprobe(&saved_next_opcode2); - saved_next_opcode2.addr = 0x0; - saved_next_opcode2.opcode = 0x0; + p = &__get_cpu_var(saved_next_opcode2); + if (p->addr) { + arch_disarm_kprobe(p); + p->addr = NULL; + p->opcode = 0; } } @@ -572,14 +581,5 @@ static struct kprobe trampoline_p = { int __init arch_init_kprobes(void) { - saved_next_opcode.addr = 0x0; - saved_next_opcode.opcode = 0x0; - - saved_current_opcode.addr = 0x0; - saved_current_opcode.opcode = 0x0; - - saved_next_opcode2.addr = 0x0; - saved_next_opcode2.opcode = 0x0; - return register_kprobe(&trampoline_p); } |