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authorWade Farnsworth <wade_farnsworth@mentor.com>2012-04-04 16:19:47 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2012-04-25 19:49:28 +0100
commit0693bf68148c4473158e435383e75af70b704f78 (patch)
tree8bb62e5b4ad99f9dd87d90949b0772cb81cdd96f /arch/arm/kernel/ptrace.c
parentbf2c9f9866928df60157bc4f1ab39f93a32c754e (diff)
downloadop-kernel-dev-0693bf68148c4473158e435383e75af70b704f78.zip
op-kernel-dev-0693bf68148c4473158e435383e75af70b704f78.tar.gz
ARM: 7374/1: add TRACEHOOK support
Add calls to tracehook_report_syscall_{entry,exit} and tracehook_signal_handler Signed-off-by: Steven Walter <stevenrwalter@gmail.com> Signed-off-by: Wade Farnsworth <wade_farnsworth@mentor.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/kernel/ptrace.c')
-rw-r--r--arch/arm/kernel/ptrace.c21
1 files changed, 6 insertions, 15 deletions
diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index 80abafb..50d5a7d 100644
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -24,6 +24,7 @@
#include <linux/hw_breakpoint.h>
#include <linux/regset.h>
#include <linux/audit.h>
+#include <linux/tracehook.h>
#include <asm/pgtable.h>
#include <asm/traps.h>
@@ -931,24 +932,14 @@ asmlinkage int syscall_trace(int why, struct pt_regs *regs, int scno)
if (!test_thread_flag(TIF_SYSCALL_TRACE))
return scno;
- if (!(current->ptrace & PT_PTRACED))
- return scno;
current_thread_info()->syscall = scno;
- /* the 0x80 provides a way for the tracing parent to distinguish
- between a syscall stop and SIGTRAP delivery */
- ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
- ? 0x80 : 0));
- /*
- * this isn't the same as continuing with a signal, but it will do
- * for normal use. strace only continues with a signal if the
- * stopping signal is not SIGTRAP. -brl
- */
- if (current->exit_code) {
- send_sig(current->exit_code, current, 1);
- current->exit_code = 0;
- }
+ if (why)
+ tracehook_report_syscall_exit(regs, 0);
+ else if (tracehook_report_syscall_entry(regs))
+ current_thread_info()->syscall = -1;
+
regs->ARM_ip = ip;
return current_thread_info()->syscall;
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