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authorDavid S. Miller <davem@davemloft.net>2008-07-27 03:13:13 -0700
committerDavid S. Miller <davem@davemloft.net>2008-07-27 17:33:14 -0700
commit1c133b4b3d58bf88293eeea0d9d090777333bf48 (patch)
treeb26171abee538e13443ba4470aecc18433afd08a
parent768225868c16d882f7a38a11027945284dc9f49e (diff)
sparc: Use tracehook routines in syscall_trace().
Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--arch/sparc/kernel/entry.S12
-rw-r--r--arch/sparc/kernel/ptrace.c26
2 files changed, 21 insertions, 17 deletions
diff --git a/arch/sparc/kernel/entry.S b/arch/sparc/kernel/entry.S
index 2f96256dc51..e8cdf715a54 100644
--- a/arch/sparc/kernel/entry.S
+++ b/arch/sparc/kernel/entry.S
@@ -1196,8 +1196,9 @@ sys_rt_sigreturn:
be 1f
nop
+ add %sp, STACKFRAME_SZ, %o0
call syscall_trace
- nop
+ mov 1, %o1
1:
/* We are returning to a signal handler. */
@@ -1287,8 +1288,12 @@ linux_fast_syscall:
mov %i3, %o3
linux_syscall_trace:
+ add %sp, STACKFRAME_SZ, %o0
call syscall_trace
- nop
+ mov 0, %o1
+ cmp %o0, 0
+ bne 3f
+ mov -ENOSYS, %o0
mov %i0, %o0
mov %i1, %o1
mov %i2, %o2
@@ -1337,6 +1342,7 @@ syscall_is_too_hard:
call %l7
mov %i5, %o5
+3:
st %o0, [%sp + STACKFRAME_SZ + PT_I0]
ret_sys_call:
@@ -1374,6 +1380,8 @@ ret_sys_call:
st %l2, [%sp + STACKFRAME_SZ + PT_NPC]
linux_syscall_trace2:
+ add %sp, STACKFRAME_SZ, %o0
+ mov 1, %o1
call syscall_trace
add %l1, 0x4, %l2 /* npc = npc+4 */
st %l1, [%sp + STACKFRAME_SZ + PT_PC]
diff --git a/arch/sparc/kernel/ptrace.c b/arch/sparc/kernel/ptrace.c
index 81f3b929743..20699c70141 100644
--- a/arch/sparc/kernel/ptrace.c
+++ b/arch/sparc/kernel/ptrace.c
@@ -21,6 +21,7 @@
#include <linux/signal.h>
#include <linux/regset.h>
#include <linux/elf.h>
+#include <linux/tracehook.h>
#include <asm/pgtable.h>
#include <asm/system.h>
@@ -450,21 +451,16 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
return ret;
}
-asmlinkage void syscall_trace(void)
+asmlinkage int syscall_trace(struct pt_regs *regs, int syscall_exit_p)
{
- if (!test_thread_flag(TIF_SYSCALL_TRACE))
- return;
- if (!(current->ptrace & PT_PTRACED))
- return;
- 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;
+ int ret = 0;
+
+ if (test_thread_flag(TIF_SYSCALL_TRACE)) {
+ if (syscall_exit_p)
+ tracehook_report_syscall_exit(regs, 0);
+ else
+ ret = tracehook_report_syscall_entry(regs);
}
+
+ return ret;
}