diff options
Diffstat (limited to 'arch/arm/kernel/ptrace.c')
| -rw-r--r-- | arch/arm/kernel/ptrace.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c index 2bf27f364d0..03438e9cc06 100644 --- a/arch/arm/kernel/ptrace.c +++ b/arch/arm/kernel/ptrace.c @@ -21,10 +21,15 @@ #include <linux/uaccess.h> #include <linux/perf_event.h> #include <linux/hw_breakpoint.h> +#include <linux/module.h> +#include <linux/marker.h> +#include <linux/kallsyms.h> +#include <trace/syscall.h> #include <asm/pgtable.h> #include <asm/system.h> #include <asm/traps.h> +#include <asm/unistd.h> #define REG_PC 15 #define REG_PSR 16 @@ -52,6 +57,30 @@ #define BREAKINST_THUMB 0xde01 #endif +DEFINE_TRACE(syscall_entry); +DEFINE_TRACE(syscall_exit); + +extern unsigned long sys_call_table[]; + +void ltt_dump_sys_call_table(void *call_data) +{ + int i; + char namebuf[KSYM_NAME_LEN]; + + for (i = 0; i < __NR_syscall_max + 1; i++) { + sprint_symbol(namebuf, sys_call_table[i]); + __trace_mark(0, syscall_state, sys_call_table, call_data, + "id %d address %p symbol %s", + i, (void*)sys_call_table[i], namebuf); + } +} +EXPORT_SYMBOL_GPL(ltt_dump_sys_call_table); + +void ltt_dump_idt_table(void *call_data) +{ +} +EXPORT_SYMBOL_GPL(ltt_dump_idt_table); + struct pt_regs_offset { const char *name; int offset; @@ -788,6 +817,11 @@ asmlinkage int syscall_trace(int why, struct pt_regs *regs, int scno) { unsigned long ip; + if (!why) + trace_syscall_entry(regs, scno); + else + trace_syscall_exit(regs->ARM_r0); + if (!test_thread_flag(TIF_SYSCALL_TRACE)) return scno; if (!(current->ptrace & PT_PTRACED)) |