parisc: tracehook_report_syscall
This makes parisc use the standard tracehook_report_syscall_entry and tracehook_report_syscall_exit hooks in <linux/tracehook.h>. To do this, we need to access current->thread.regs, and to know whether we're entering or exiting the syscall, so add this to syscall_trace. Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
This commit is contained in:
parent
17d857be64
commit
d6b58772dc
|
@ -13,6 +13,7 @@
|
||||||
#include <linux/smp.h>
|
#include <linux/smp.h>
|
||||||
#include <linux/errno.h>
|
#include <linux/errno.h>
|
||||||
#include <linux/ptrace.h>
|
#include <linux/ptrace.h>
|
||||||
|
#include <linux/tracehook.h>
|
||||||
#include <linux/user.h>
|
#include <linux/user.h>
|
||||||
#include <linux/personality.h>
|
#include <linux/personality.h>
|
||||||
#include <linux/security.h>
|
#include <linux/security.h>
|
||||||
|
@ -264,21 +265,19 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
|
|
||||||
void syscall_trace(void)
|
void syscall_trace(int why)
|
||||||
{
|
{
|
||||||
|
struct pt_regs *regs = ¤t->thread.regs;
|
||||||
|
|
||||||
if (!test_thread_flag(TIF_SYSCALL_TRACE))
|
if (!test_thread_flag(TIF_SYSCALL_TRACE))
|
||||||
return;
|
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
|
* Report the system call for tracing. Entry tracing can
|
||||||
* for normal use. strace only continues with a signal if the
|
* decide to abort the call. We handle that by setting an
|
||||||
* stopping signal is not SIGTRAP. -brl
|
* invalid syscall number (-1) to force an ENOSYS error.
|
||||||
*/
|
*/
|
||||||
if (current->exit_code) {
|
if (why)
|
||||||
send_sig(current->exit_code, current, 1);
|
tracehook_report_syscall_exit(regs, 0);
|
||||||
current->exit_code = 0;
|
else if (tracehook_report_syscall_entry(regs))
|
||||||
}
|
regs->gr[20] = -1; /* force ENOSYS */
|
||||||
}
|
}
|
||||||
|
|
|
@ -288,6 +288,7 @@ tracesys:
|
||||||
STREG %r18,PT_GR18(%r2)
|
STREG %r18,PT_GR18(%r2)
|
||||||
/* Finished saving things for the debugger */
|
/* Finished saving things for the debugger */
|
||||||
|
|
||||||
|
ldi 0,%r26 /* syscall entry */
|
||||||
ldil L%syscall_trace,%r1
|
ldil L%syscall_trace,%r1
|
||||||
ldil L%tracesys_next,%r2
|
ldil L%tracesys_next,%r2
|
||||||
be R%syscall_trace(%sr7,%r1)
|
be R%syscall_trace(%sr7,%r1)
|
||||||
|
@ -336,6 +337,7 @@ tracesys_exit:
|
||||||
#ifdef CONFIG_64BIT
|
#ifdef CONFIG_64BIT
|
||||||
ldo -16(%r30),%r29 /* Reference param save area */
|
ldo -16(%r30),%r29 /* Reference param save area */
|
||||||
#endif
|
#endif
|
||||||
|
ldi 1,%r26 /* syscall exit */
|
||||||
bl syscall_trace, %r2
|
bl syscall_trace, %r2
|
||||||
STREG %r28,TASK_PT_GR28(%r1) /* save return value now */
|
STREG %r28,TASK_PT_GR28(%r1) /* save return value now */
|
||||||
ldo -THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r1 /* get task ptr */
|
ldo -THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r1 /* get task ptr */
|
||||||
|
@ -358,7 +360,7 @@ tracesys_sigexit:
|
||||||
ldo -16(%r30),%r29 /* Reference param save area */
|
ldo -16(%r30),%r29 /* Reference param save area */
|
||||||
#endif
|
#endif
|
||||||
bl syscall_trace, %r2
|
bl syscall_trace, %r2
|
||||||
nop
|
ldi 1,%r26 /* syscall exit */
|
||||||
|
|
||||||
ldil L%syscall_exit_rfi,%r1
|
ldil L%syscall_exit_rfi,%r1
|
||||||
be,n R%syscall_exit_rfi(%sr7,%r1)
|
be,n R%syscall_exit_rfi(%sr7,%r1)
|
||||||
|
|
Loading…
Reference in a new issue