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authorUlrich Drepper <drepper@redhat.com>1999-06-06 22:12:29 +0000
committerUlrich Drepper <drepper@redhat.com>1999-06-06 22:12:29 +0000
commite0082312bcfdce398099d58add30cc02b79f129b (patch)
treede0888b0b3958fcc257dfbc50ca0ee7bff0424c3
parent25ee8743cf2b7fdf2ad7b29c1c49b12860c4d717 (diff)
downloadglibc-e0082312bcfdce398099d58add30cc02b79f129b.tar.gz
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glibc-e0082312bcfdce398099d58add30cc02b79f129b.zip
Update.
	* sysdeps/unix/sysv/linux/i386/sigaction.c: Correct restorer
	function handling.
-rw-r--r--ChangeLog3
-rw-r--r--sysdeps/unix/sysv/linux/i386/sigaction.c74
2 files changed, 37 insertions, 40 deletions
diff --git a/ChangeLog b/ChangeLog
index 3e9dc31497..7671f61e47 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 1999-06-06  Ulrich Drepper  <drepper@cygnus.com>
 
+	* sysdeps/unix/sysv/linux/i386/sigaction.c: Correct restorer
+	function handling.
+
 	* sysdeps/unix/sysv/linux/i386/sigaction.c (SA_RESTORER): New #define.
 
 1999-06-06  Andi Kleen  <ak@muc.de>
diff --git a/sysdeps/unix/sysv/linux/i386/sigaction.c b/sysdeps/unix/sysv/linux/i386/sigaction.c
index 400e54c353..fddb22a4e0 100644
--- a/sysdeps/unix/sysv/linux/i386/sigaction.c
+++ b/sysdeps/unix/sysv/linux/i386/sigaction.c
@@ -45,6 +45,9 @@ extern int __syscall_rt_sigaction (int, const struct kernel_sigaction *,
 int __libc_missing_rt_sigs;
 #endif
 
+static void restore_rt (void) asm ("__restore_rt");
+static void restore (void) asm ("__restore");
+
 
 /* If ACT is not NULL, change the action for SIG to *ACT.
    If OACT is not NULL, put the old action for SIG in *OACT.  */
@@ -72,10 +75,10 @@ __sigaction (int sig, const struct sigaction *act, struct sigaction *oact)
 	{
 	  kact.k_sa_handler = act->sa_handler;
 	  memcpy (&kact.sa_mask, &act->sa_mask, sizeof (sigset_t));
-	  kact.sa_flags = act->sa_flags | SA_RESTORER;
+	  kact.sa_flags = act->sa_flags;
 
-	  kact.sa_restorer = ((act->sa_flags & SA_NOMASK)
-			      ? &&restore_nomask : &&restore);
+	  kact.sa_restorer = ((act->sa_flags & SA_SIGINFO)
+			      ? &restore_rt : &restore);
 	}
 
       /* XXX The size argument hopefully will have to be changed to the
@@ -111,8 +114,7 @@ __sigaction (int sig, const struct sigaction *act, struct sigaction *oact)
       k_newact.sa_mask = act->sa_mask.__val[0];
       k_newact.sa_flags = act->sa_flags | SA_RESTORER;
 
-      k_newact.sa_restorer = ((act->sa_flags & SA_NOMASK)
-			      ? &&restore_nomask : &&restore);
+      k_newact.sa_restorer = &restore;
     }
 
   asm volatile ("pushl %%ebx\n"
@@ -139,41 +141,33 @@ __sigaction (int sig, const struct sigaction *act, struct sigaction *oact)
 
   return 0;
 #endif
-
- restore:
-  asm (
-#ifdef	PIC
-       "	pushl %%ebx\n"
-       "	call 0f\n"
-       "0:	popl %%ebx\n"
-       "	addl $_GLOBAL_OFFSET_TABLE_+[.-0b], %%ebx\n"
-       "	addl $8, %%esp\n"
-       "	call __sigsetmask@PLT\n"
-       "	addl $8, %%esp\n"
-       "	popl %%ebx\n"
-#else
-       "	addl $4, %%esp\n"
-       "	call __sigsetmask\n"
-       "	addl $4, %%esp\n"
-#endif
-       "	popl %%eax\n"
-       "	popl %%ecx\n"
-       "	popl %%edx\n"
-       "	popf\n"
-       "	ret"
-       : : );
-
- restore_nomask:
-  asm ("	addl $4, %%esp\n"
-       "	popl %%eax\n"
-       "	popl %%ecx\n"
-       "	popl %%edx\n"
-       "	popf\n"
-       "	ret"
-       : : );
-
-  /* NOTREACHED */
-  return -1;
 }
 
 weak_alias (__sigaction, sigaction)
+
+#define RESTORE(name, syscall) RESTORE2 (name, syscall)
+#define RESTORE2(name, syscall) \
+asm						\
+  (						\
+   ".align 16\n"				\
+   "__" #name ":\n"					\
+   "	movl $" #syscall ", %eax\n"		\
+   "	int  $0x80"				\
+   );
+
+/* The return code for realtime-signals.  */
+RESTORE (restore_rt, __NR_rt_sigreturn)
+
+/* For the boring old signals.  */
+# undef RESTORE2
+# define RESTORE2(name, syscall) \
+asm						\
+  (						\
+   ".align 8\n"				\
+   "__" #name ":\n"					\
+   "	popl %eax\n"				\
+   "	movl $" #syscall ", %eax\n"		\
+   "	int  $0x80"				\
+   );
+
+RESTORE (restore, __NR_sigreturn)