From: Ulrich Drepper <drepper@redhat.com>
Date: Thu, 17 Oct 1996 01:51:33 +0000 (+0000)
Subject: update from main archive 961016
X-Git-Tag: upstream/2.30~10627^2~3724
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5415516c876dfe06a8543a48a21034f206e93cbc;p=external%2Fglibc.git

update from main archive 961016
---

diff --git a/sysdeps/m68k/bsd-_setjmp.S b/sysdeps/m68k/bsd-_setjmp.S
index 69aa7de..32d25e4 100644
--- a/sysdeps/m68k/bsd-_setjmp.S
+++ b/sysdeps/m68k/bsd-_setjmp.S
@@ -46,3 +46,4 @@ ENTRY (_setjmp)
 #else
 	jmp C_SYMBOL_NAME (__sigsetjmp)
 #endif
+PSEUDO_END (_setjmp)
diff --git a/sysdeps/m68k/bsd-setjmp.S b/sysdeps/m68k/bsd-setjmp.S
index c853516..a4053bd 100644
--- a/sysdeps/m68k/bsd-setjmp.S
+++ b/sysdeps/m68k/bsd-setjmp.S
@@ -44,3 +44,4 @@ ENTRY (setjmp)
 #else
 	jmp C_SYMBOL_NAME (__sigsetjmp)
 #endif
+PSEUDO_END (setjmp)
diff --git a/sysdeps/unix/sysv/linux/m68k/clone.S b/sysdeps/unix/sysv/linux/m68k/clone.S
index 0728003..4dcd90e 100644
--- a/sysdeps/unix/sysv/linux/m68k/clone.S
+++ b/sysdeps/unix/sysv/linux/m68k/clone.S
@@ -27,6 +27,8 @@ Cambridge, MA 02139, USA.  */
 
         .text
 ENTRY (__clone)
+	CALL_MCOUNT
+
 	/* Sanity check arguments.  */
 	movel	#-EINVAL, %d0
 	movel	4(%sp), %a0		/* no NULL function pointers */
@@ -72,5 +74,6 @@ thread_start:
 #else
 	jbsr	_exit
 #endif
+PSEUDO_END (__clone)
 
 weak_alias (__clone, clone)
diff --git a/sysdeps/unix/sysv/linux/m68k/mmap.S b/sysdeps/unix/sysv/linux/m68k/mmap.S
index ed0480d..9bac533 100644
--- a/sysdeps/unix/sysv/linux/m68k/mmap.S
+++ b/sysdeps/unix/sysv/linux/m68k/mmap.S
@@ -22,6 +22,7 @@ Cambridge, MA 02139, USA.  */
 	SYSCALL_ERROR_HANDLER
 
 ENTRY (__mmap)
+	CALL_MCOUNT
 
 	move.l #SYS_ify (mmap), %d0	/* System call number in %d0.  */
 
@@ -40,5 +41,6 @@ ENTRY (__mmap)
 	   mmap is declared to return a pointer.  */
 	move.l %d0, %a0
 	rts
+PSEUDO_END (__mmap)
 
 weak_alias (__mmap, mmap)
diff --git a/sysdeps/unix/sysv/linux/m68k/sigcontext.h b/sysdeps/unix/sysv/linux/m68k/sigcontext.h
deleted file mode 100644
index 585b479..0000000
--- a/sysdeps/unix/sysv/linux/m68k/sigcontext.h
+++ /dev/null
@@ -1,31 +0,0 @@
-/* Structure describing state saved while handling a signal.  Linux/m68k version.
-Copyright (C) 1996 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
-
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
-
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-Library General Public License for more details.
-
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB.  If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA.  */
-
-/* State of this thread when the signal was taken.  */
-struct sigcontext
-{
-  __sigset_t sc_mask;
-  unsigned long sc_usp;
-  unsigned long sc_d0;
-  unsigned long sc_d1;
-  unsigned long sc_a0;
-  unsigned long sc_a1;
-  unsigned short sc_sr;
-  unsigned long sc_pc;
-};
diff --git a/sysdeps/unix/sysv/linux/m68k/sigreturn.S b/sysdeps/unix/sysv/linux/m68k/sigreturn.S
index 7f6d643..04f0db5 100644
--- a/sysdeps/unix/sysv/linux/m68k/sigreturn.S
+++ b/sysdeps/unix/sysv/linux/m68k/sigreturn.S
@@ -20,9 +20,12 @@ Cambridge, MA 02139, USA.  */
 
 .text
 ENTRY (__sigreturn)
+	CALL_MCOUNT
+
 	addq.l #4, %sp		/* Pop the return PC.  */
 	DO_CALL (#SYS_ify (sigreturn), 0)
 				/* Do the system call; it never returns.  */
 	/* NOTREACHED */
+PSEUDO_END (__sigreturn)
 
 weak_alias (__sigreturn, sigreturn)
diff --git a/sysdeps/unix/sysv/linux/m68k/socket.S b/sysdeps/unix/sysv/linux/m68k/socket.S
index a85f41c..1294287 100644
--- a/sysdeps/unix/sysv/linux/m68k/socket.S
+++ b/sysdeps/unix/sysv/linux/m68k/socket.S
@@ -35,6 +35,7 @@ Cambridge, MA 02139, USA.  */
 
 .globl P(__,socket)
 ENTRY (P(__,socket))
+	CALL_MCOUNT
 
 	/* Save registers.  */
 	move.l %d2, %a0
@@ -58,5 +59,6 @@ ENTRY (P(__,socket))
 
 	/* Successful; return the syscall's value.  */
 	rts
+PSEUDO_END (P(__,socket))
 
 weak_alias (P(__,socket), socket)
diff --git a/sysdeps/unix/sysv/linux/m68k/syscall.S b/sysdeps/unix/sysv/linux/m68k/syscall.S
index 2cc451c..1c7bd6b 100644
--- a/sysdeps/unix/sysv/linux/m68k/syscall.S
+++ b/sysdeps/unix/sysv/linux/m68k/syscall.S
@@ -18,14 +18,20 @@ Cambridge, MA 02139, USA.  */
 
 #include <sysdep.h>
 
+/* Please consult the file sysdeps/unix/sysv/linux/m68k/sysdep.h for
+   more information about the value -128 used below.*/
+
 	.text
 	SYSCALL_ERROR_HANDLER
 ENTRY (syscall)
-	move.l (%sp)+, %a0	/* Pop return address.  */
-	DO_CALL ((%sp), 5)	/* Frob the args and do the system call.  */
-	tst.l %d0		/* Check %d0 for error.  */
-	jmi error		/* Jump to error handler if negative.  */
-	jmp (%a0)		/* Return to caller.  */
+	CALL_MCOUNT
 
-error:	pea (%a0)
-	jra syscall_error
+	move.l 4(%sp), %d0	/* Load syscall number.  */
+	_DOARGS_5 (24)		/* Frob arguments.  */
+	trap &0			/* Do the system call.  */
+	UNDOARGS_5		/* Unfrob arguments.  */
+	moveq.l &-128, %d1
+	cmp.l %d1, %d0		/* Check %d0 for error.  */
+	jcc syscall_error	/* Jump to error handler if negative.  */
+	rts			/* Return to caller.  */
+PSEUDO_END (syscall)
diff --git a/sysdeps/unix/sysv/linux/m68k/sysdep.S b/sysdeps/unix/sysv/linux/m68k/sysdep.S
index 407c2d3..31fa20f 100644
--- a/sysdeps/unix/sysv/linux/m68k/sysdep.S
+++ b/sysdeps/unix/sysv/linux/m68k/sysdep.S
@@ -46,7 +46,7 @@ __errno = errno	/* This name is expected by the MT code.  */
 
 /* The syscall stubs jump here when they detect an error.  */
 
-ENTRY(__syscall_error)
+ENTRY (__syscall_error)
 	neg.l %d0
 	move.l %d0, errno
 #ifdef _LIBC_REENTRANT
@@ -59,14 +59,15 @@ ENTRY(__syscall_error)
 	   return a pointer.  */
 	move.l %d0, %a0
 	rts
-	.size	__syscall_error, . - __syscall_error
+PSEUDO_END (__syscall_error)
 #endif /* PIC */
 
-ERRNO(__errno_location)
+ENTRY (__errno_location)
+	CALL_MCOUNT
 #ifdef PIC
 	move.l	(%pc, errno@GOTPC), %a0
 #else
 	lea	errno, %a0
 #endif
 	rts
-	.size	__errno_location, . - __errno_location
+PSEUDO_END (__errno_location)
diff --git a/sysdeps/unix/sysv/linux/m68k/sysdep.h b/sysdeps/unix/sysv/linux/m68k/sysdep.h
index cfc9b04..9cddd20 100644
--- a/sysdeps/unix/sysv/linux/m68k/sysdep.h
+++ b/sysdeps/unix/sysv/linux/m68k/sysdep.h
@@ -33,8 +33,6 @@ Cambridge, MA 02139, USA.  */
 
 #ifdef ASSEMBLER
 
-#define POUND #
-
 /* Define an entry point visible from C.  */
 #define	ENTRY(name)							      \
   .globl name;								      \
@@ -67,14 +65,26 @@ Cambridge, MA 02139, USA.  */
 #define	syscall_error	__syscall_error
 
 /* Linux uses a negative return value to indicate syscall errors, unlike
-   most Unices, which use the condition codes' carry flag.  */
+   most Unices, which use the condition codes' carry flag.
+
+   Since version 2.1 the return value of a system call might be negative
+   even if the call succeeded.  E.g., the `lseek' system call might return
+   a large offset.  Therefore we must not anymore test for < 0, but test
+   for a real error by making sure the value in %d0 is a real error
+   number.  For now (as of 2.1.1) 122 is the largest defined error number.
+   We allow for a bit of room for development and treat -128 to -1 as
+   error values.  */
 #define	PSEUDO(name, syscall_name, args)				      \
   .text;								      \
   SYSCALL_ERROR_HANDLER							      \
   ENTRY (name)								      \
-    DO_CALL (POUND SYS_ify (syscall_name), args);			      \
-    tst.l %d0;								      \
-    jmi syscall_error;
+    DO_CALL (&SYS_ify (syscall_name), args);				      \
+    moveq.l &-128, %d1;							      \
+    cmp.l %d1, %d0;							      \
+    jcc syscall_error
+
+#undef PSEUDO_END
+#define PSEUDO_END(name) .size name, . - name
 
 #ifdef PIC
 /* Store (- %d0) into errno through the GOT.  */
@@ -88,7 +98,7 @@ syscall_error:								      \
     move.l %d0, -(%sp);							      \
     jbsr __errno_location@PLTPC;					      \
     move.l (%sp)+, (%a0);						      \
-    move.l POUND -1, %d0;						      \
+    move.l &-1, %d0;							      \
     /* Copy return value to %a0 for syscalls that are declared to return      \
        a pointer (e.g., mmap).  */					      \
     move.l %d0, %a0;							      \
@@ -100,7 +110,7 @@ syscall_error:								      \
     move.l (errno@GOTPC, %pc), %a0;					      \
     neg.l %d0;								      \
     move.l %d0, (%a0);							      \
-    move.l POUND -1, %d0;						      \
+    move.l &-1, %d0;							      \
     /* Copy return value to %a0 for syscalls that are declared to return      \
        a pointer (e.g., mmap).  */					      \
     move.l %d0, %a0;							      \
@@ -138,7 +148,7 @@ syscall_error:								      \
 #define DO_CALL(syscall, args)				      		      \
     move.l syscall, %d0;						      \
     DOARGS_##args							      \
-    trap POUND 0;							      \
+    trap &0;								      \
     UNDOARGS_##args
 
 #define	DOARGS_0	/* No arguments to frob.  */