Update.

1999-04-12  Philip Blundell  <philb@gnu.org>

	* elf/elf.h: Update ARM definitions to match current gas2.

	* sysdeps/arm/bits/endian.h: Support big endian operation.

	* sysdeps/unix/sysv/linux/arm/ioperm.c (_outw, _outb, _outl):
	Don't bother range checking the port number.

	* sysdeps/unix/sysv/linux/arm/vfork.S: New file.

	* sysdeps/unix/sysv/linux/arm/sysdep.h (INLINE_SYSCALL): Include
	the syscall name in assembler output for ease of debugging.

	* sysdeps/unix/sysv/linux/arm/sigaction.c: Don't rely on undefined
	compiler behaviour.
	* sysdeps/unix/sysv/linux/arm/sigrestorer.S: New file.
	* sysdeps/unix/sysv/linux/arm/Makefile [$(subdir) = signal]
	(sysdep_routines): Add sigrestorer.

	* string/tester.c (test_strcpy): Add new tests for unaligned
	arguments.
	* sysdeps/arm/bits/string.h: Delete inline implementations of
	strcpy and stpcpy.

11 files changed, 149 insertions, 160 deletions

diff --git a/ChangeLog b/ChangeLog
index e22b93a2a6..8988cbb566 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,28 @@
+1999-04-12  Philip Blundell  <philb@gnu.org>
+
+	* elf/elf.h: Update ARM definitions to match current gas2.
+
+	* sysdeps/arm/bits/endian.h: Support big endian operation.
+
+	* sysdeps/unix/sysv/linux/arm/ioperm.c (_outw, _outb, _outl):
+	Don't bother range checking the port number.
+
+	* sysdeps/unix/sysv/linux/arm/vfork.S: New file.
+
+	* sysdeps/unix/sysv/linux/arm/sysdep.h (INLINE_SYSCALL): Include
+	the syscall name in assembler output for ease of debugging.
+
+	* sysdeps/unix/sysv/linux/arm/sigaction.c: Don't rely on undefined
+	compiler behaviour.
+	* sysdeps/unix/sysv/linux/arm/sigrestorer.S: New file.
+	* sysdeps/unix/sysv/linux/arm/Makefile [$(subdir) = signal]
+	(sysdep_routines): Add sigrestorer.
+
+	* string/tester.c (test_strcpy): Add new tests for unaligned
+	arguments.
+	* sysdeps/arm/bits/string.h: Delete inline implementations of
+	strcpy and stpcpy.
+
 1999-04-11  Ulrich Drepper  <drepper@cygnus.com>
 
 	* libio/Makefile (CPPFLAGS-.o): Don't define IO_DEBUG.
diff --git a/elf/elf.h b/elf/elf.h
index 0eb6c56e13..9b368bb44d 100644
--- a/elf/elf.h
+++ b/elf/elf.h
@@ -1523,6 +1523,9 @@ typedef Elf32_Addr Elf32_Conflict;
 #define EF_ARM_APCS_26     0x08
 #define EF_ARM_APCS_FLOAT  0x10
 #define EF_ARM_PIC         0x20
+#define EF_ALIGN8          0x40		/* 8-bit structure alignment is in use */
+#define EF_NEW_ABI         0x80
+#define EF_OLD_ABI         0x100
 
 /* Additional symbol types for Thumb */
 #define STT_ARM_TFUNC      0xd
@@ -1541,17 +1544,19 @@ typedef Elf32_Addr Elf32_Conflict;
 #define R_ARM_PC24		1	/* PC relative 26 bit branch */
 #define R_ARM_ABS32		2	/* Direct 32 bit  */
 #define R_ARM_REL32		3	/* PC relative 32 bit */
-#define R_ARM_ABS8		4	/* Direct 8 bit */
+#define R_ARM_PC13		4
 #define R_ARM_ABS16		5	/* Direct 16 bit */
 #define R_ARM_ABS12		6	/* Direct 12 bit */
 #define R_ARM_THM_ABS5		7
-#define R_ARM_THM_PC22		8
+#define R_ARM_ABS8		8	/* Direct 8 bit */
 #define R_ARM_SBREL32		9
-#define R_ARM_AMP_VCALL9	10
-#define R_ARM_THM_PC11		11	/* Thumb unconditional branch */
-#define R_ARM_THM_PC9		12	/* Thumb conditional branch */
-#define R_ARM_GNU_VTINHERIT	13
-#define R_ARM_GNU_VTENTRY	14
+#define R_ARM_THM_PC22		10
+#define R_ARM_THM_PC8		11
+#define R_ARM_AMP_VCALL9	12
+#define R_ARM_SWI24		13
+#define R_ARM_THM_SWI8		14
+#define R_ARM_XPC25		15
+#define R_ARM_THM_XPC22		16
 #define R_ARM_COPY		20	/* Copy symbol at runtime */
 #define R_ARM_GLOB_DAT		21	/* Create GOT entry */
 #define R_ARM_JUMP_SLOT		22	/* Create PLT entry */
@@ -1560,6 +1565,11 @@ typedef Elf32_Addr Elf32_Conflict;
 #define R_ARM_GOTPC		25	/* 32 bit PC relative offset to GOT */
 #define R_ARM_GOT32		26	/* 32 bit GOT entry */
 #define R_ARM_PLT32		27	/* 32 bit PLT address */
+#define R_ARM_GNU_VTENTRY	100
+#define R_ARM_GNU_VTINHERIT	101
+#define R_ARM_THM_PC11		102	/* thumb unconditional branch */
+#define R_ARM_THM_PC9		103	/* thumb conditional branch */
+#define R_ARM_RXPC25		249
 #define R_ARM_RSBREL32		250
 #define R_ARM_THM_RPC22		251
 #define R_ARM_RREL32		252
diff --git a/string/tester.c b/string/tester.c
index 9545c28080..d874fe3379 100644
--- a/string/tester.c
+++ b/string/tester.c
@@ -1,5 +1,5 @@
 /* Tester for string functions.
-   Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1995, 1996, 1997, 1998, 1999 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
@@ -119,6 +119,7 @@ test_strcmp (void)
 void
 test_strcpy (void)
 {
+  int i;
   it = "strcpy";
   check (strcpy (one, "abcd") == one, 1); /* Returned value. */
   equal (one, "abcd", 2);		/* Basic test. */
@@ -134,6 +135,14 @@ test_strcpy (void)
 
   (void) strcpy (one, "");
   equal (one, "", 7);			/* Boundary condition. */
+
+  for (i = 0; i < 16; i++)
+    {
+      (void) strcpy (one + i, "hi there");	/* Unaligned destination. */
+      equal (one + i, "hi there", 8 + (i * 2));
+      (void) strcpy (two, one + i);		/* Unaligned source. */
+      equal (two, "hi there", 9 + (i * 2));
+    }
 }
 
 void
diff --git a/sysdeps/arm/bits/endian.h b/sysdeps/arm/bits/endian.h
index 7fe486e89d..5e54cc7534 100644
--- a/sysdeps/arm/bits/endian.h
+++ b/sysdeps/arm/bits/endian.h
@@ -4,5 +4,9 @@
 # error "Never use <bits/endian.h> directly; include <endian.h> instead."
 #endif
 
+#ifdef __ARMEB__
+#define __BYTE_ORDER __BIG_ENDIAN
+#else
 #define __BYTE_ORDER __LITTLE_ENDIAN
+#endif
 #define __FLOAT_WORD_ORDER __BIG_ENDIAN
diff --git a/sysdeps/arm/bits/string.h b/sysdeps/arm/bits/string.h
index 8dce456f39..4ca2e307a1 100644
--- a/sysdeps/arm/bits/string.h
+++ b/sysdeps/arm/bits/string.h
@@ -1,5 +1,5 @@
 /* Optimized, inlined string functions.  ARM version.
-   Copyright (C) 1998 Free Software Foundation, Inc.
+   Copyright (C) 1998, 1999 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
@@ -25,126 +25,3 @@
    <bits/string2.h> since they don't work on the ARM.  */
 #define _HAVE_STRING_ARCH_strcpy 1
 #define _HAVE_STRING_ARCH_stpcpy 1
-
-/* We only provide optimizations if GNU CC is used and this is a little
-   endian system (the code below does not work on big endian machines).
-   With current versions of GCC these optimi\ations produce quite a large
-   amount of code so we only enable them if the user specifically asked
-   for it.  */
-#if !defined __NO_STRING_INLINES && defined __GNUC__ && __GNUC__ >= 2 \
- && !defined __ARMEB__ && defined __USE_STRING_INLINES
-
-/* Copy SRC to DEST.  */
-#define strcpy(dest, src) \
-  (__extension__ (__builtin_constant_p (src)				      \
-		  ? (__string2_1bptr_p (src) && strlen (src) + 1 <= 8	      \
-		     ? __strcpy_small (dest, src, strlen (src) + 1)	      \
-		     : (char *) memcpy (dest, src, strlen (src) + 1))	      \
-		  : strcpy (dest, src)))
-
-#define __strcpy_small(dest, src, srclen) \
-  (__extension__ ({ char *__dest = (char *) (dest);			      \
-		    const char *__src = (const char *) (src);		      \
-		    size_t __srclen = (srclen);				      \
-		    switch (__srclen)					      \
-		      {							      \
-		      case 5:						      \
-			*((unsigned long int *) __dest) =		      \
-			     *((const unsigned long int *) (__src));	      \
-			__dest += 4;					      \
-			__src += 4;					      \
-		      case 1:						      \
-			*__dest++ = '\0';				      \
-			break;						      \
-		      case 6:						      \
-			*((unsigned long int *) __dest) =		      \
-			     *((const unsigned long int *) (__src));	      \
-			__dest += 4;					      \
-			__src += 4;					      \
-		      case 2:						      \
-			*((unsigned short int *) __dest) =		      \
-			     __src[0];					      \
-			__dest += 2;					      \
-			break;						      \
-		      case 7:						      \
-			*((unsigned long int *) __dest) =		      \
-			     *((const unsigned long int *) (__src));	      \
-			__dest += 4;					      \
-			__src += 4;					      \
-		      case 3:						      \
-			*((unsigned short int *) __dest) =		      \
-			     *((const unsigned short int *) (__src));	      \
-			__dest[2] = '\0';				      \
-			__dest += 3;					      \
-			break;						      \
-		      case 8:						      \
-			*((unsigned long int *) __dest) =		      \
-			     *((const unsigned long int *) (__src));	      \
-			__dest += 4;					      \
-  			__src += 4;					      \
-		      case 4:						      \
-			*((unsigned long int *) __dest) =		      \
-			     *((const unsigned short int *) (__src)) |	      \
-		             (__src[2] << 16);				      \
-			__dest += 4;					      \
-			break;						      \
-		    }							      \
-		  (__dest - __srclen) ; }))
-
-/* Copy SRC to DEST, returning pointer to final NUL byte.  */
-#define __stpcpy(dest, src) \
-  (__extension__ (__builtin_constant_p (src)				      \
-		  ? (__string2_1bptr_p (src) && strlen (src) + 1 <= 8	      \
-		     ? __stpcpy_small (dest, src, strlen (src) + 1)	      \
-		     : ((char *) __mempcpy (dest, src, strlen (src) + 1) - 1))\
-		  : __stpcpy (dest, src)))
-
-#define __stpcpy_small(dest, src, srclen) \
-  (__extension__ ({ char *__dest = (char *) (dest);			      \
-		    const char *__src = (const char *) (src);		      \
-		    switch (srclen)					      \
-		      {							      \
-		      case 5:						      \
-			*((unsigned long int *) __dest) =		      \
-			     *((const unsigned long int *) (__src));	      \
-			__dest += 4;					      \
-			__src += 4;					      \
-		      case 1:						      \
-			*__dest++ = '\0';				      \
-			break;						      \
-		      case 6:						      \
-			*((unsigned long int *) __dest) =		      \
-			     *((const unsigned long int *) (__src));	      \
-			__dest += 4;					      \
-			__src += 4;					      \
-		      case 2:						      \
-			*((unsigned short int *) __dest) =		      \
-			     __src[0];					      \
-			__dest += 2;					      \
-			break;						      \
-		      case 7:						      \
-			*((unsigned long int *) __dest) =		      \
-			     *((const unsigned long int *) (__src));	      \
-			__dest += 4;					      \
-			__src += 4;					      \
-		      case 3:						      \
-			*((unsigned short int *) __dest) =		      \
-			     *((const unsigned short int *) (__src));	      \
-			__dest[2] = '\0';				      \
-			__dest += 3;					      \
-			break;						      \
-		      case 8:						      \
-			*((unsigned long int *) __dest) =		      \
-			     *((const unsigned long int *) (__src));	      \
-			__dest += 4;					      \
-			__src += 4;					      \
-		      case 4:						      \
-			*((unsigned long int *) __dest) =		      \
-			     *((const unsigned short int *) (__src)) |	      \
-		             (__src[2] << 16);				      \
-			__dest += 4;					      \
-			break;						      \
-		    }							      \
-		  __dest; }))
-
-#endif
diff --git a/sysdeps/unix/sysv/linux/arm/Makefile b/sysdeps/unix/sysv/linux/arm/Makefile
index d76698b405..99a560c859 100644
--- a/sysdeps/unix/sysv/linux/arm/Makefile
+++ b/sysdeps/unix/sysv/linux/arm/Makefile
@@ -4,5 +4,6 @@ endif
 
 ifeq ($(subdir),signal)
 sysdep_routines += rt_sigsuspend rt_sigprocmask rt_sigtimedwait	\
-		   rt_sigqueueinfo rt_sigaction rt_sigpending
+		   rt_sigqueueinfo rt_sigaction rt_sigpending \
+		   sigrestorer
 endif
diff --git a/sysdeps/unix/sysv/linux/arm/ioperm.c b/sysdeps/unix/sysv/linux/arm/ioperm.c
index 551fc97d0c..260226d9f3 100644
--- a/sysdeps/unix/sysv/linux/arm/ioperm.c
+++ b/sysdeps/unix/sysv/linux/arm/ioperm.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1998 Free Software Foundation, Inc.
+/* Copyright (C) 1998, 1999 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Phil Blundell, based on the Alpha version by
    David Mosberger.
@@ -214,9 +214,6 @@ _iopl (unsigned int level)
 void
 _outb (unsigned char b, unsigned long int port)
 {
-  if (port >= MAX_PORT)
-    return;
-
   *((volatile unsigned char *)(IO_ADDR (port))) = b;
 }
 
@@ -224,9 +221,6 @@ _outb (unsigned char b, unsigned long int port)
 void
 _outw (unsigned short b, unsigned long int port)
 {
-  if (port >= MAX_PORT)
-    return;
-
   *((volatile unsigned short *)(IO_ADDR (port))) = b;
 }
 
@@ -234,9 +228,6 @@ _outw (unsigned short b, unsigned long int port)
 void
 _outl (unsigned int b, unsigned long int port)
 {
-  if (port >= MAX_PORT)
-    return;
-
   *((volatile unsigned long *)(IO_ADDR (port))) = b;
 }
 
diff --git a/sysdeps/unix/sysv/linux/arm/sigaction.c b/sysdeps/unix/sysv/linux/arm/sigaction.c
index 76399a2b7a..102d66595b 100644
--- a/sysdeps/unix/sysv/linux/arm/sigaction.c
+++ b/sysdeps/unix/sysv/linux/arm/sigaction.c
@@ -39,11 +39,14 @@ int __libc_missing_rt_sigs;
 
 #define SA_RESTORER	0x04000000
 
+extern void __default_sa_restorer(void);
+extern void __default_rt_sa_restorer(void);
+
 /* When RT signals are in use we need to use a different return stub.  */
 #ifdef __NR_rt_sigreturn
 #define choose_restorer(flags)					\
-  (flags & SA_SIGINFO) ? &&__default_rt_sa_restorer		\
-  : &&__default_sa_restorer
+  (flags & SA_SIGINFO) ? __default_rt_sa_restorer		\
+  : __default_sa_restorer
 #else
 #define choose_restorer(flags)					\
   &&__default_sa_restorer
@@ -142,20 +145,6 @@ __sigaction (sig, act, oact)
 #endif
     }
   return result;
-
-  /* If no SA_RESTORER function was specified by the application we use
-     this one.  This avoids the need for the kernel to synthesise a return
-     instruction on the stack, which would involve expensive cache flushes. */
- __default_sa_restorer:
-  asm volatile ("swi %0" : : "i" (__NR_sigreturn));
-  
-#ifdef __NR_rt_sigreturn
- __default_rt_sa_restorer:
-  asm volatile ("swi %0" : : "i" (__NR_rt_sigreturn));
-#endif
-
-  /* NOTREACHED */
-  return -1;
 }
 
 weak_alias (__sigaction, sigaction)
diff --git a/sysdeps/unix/sysv/linux/arm/sigrestorer.S b/sysdeps/unix/sysv/linux/arm/sigrestorer.S
new file mode 100644
index 0000000000..8d32e4ce9c
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arm/sigrestorer.S
@@ -0,0 +1,33 @@
+/* Copyright (C) 1999 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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <sysdep.h>
+
+/* If no SA_RESTORER function was specified by the application we use
+   one of these.  This avoids the need for the kernel to synthesise a return
+   instruction on the stack, which would involve expensive cache flushes. */
+
+ENTRY(__default_sa_restorer)
+	swi	SYS_ify(sigreturn)
+
+#ifdef __NR_rt_sigreturn
+
+ENTRY(__default_rt_sa_restorer)
+	swi	SYS_ify(rt_sigreturn)
+
+#endif
diff --git a/sysdeps/unix/sysv/linux/arm/sysdep.h b/sysdeps/unix/sysv/linux/arm/sysdep.h
index d7e28220a7..7812e99075 100644
--- a/sysdeps/unix/sysv/linux/arm/sysdep.h
+++ b/sysdeps/unix/sysv/linux/arm/sysdep.h
@@ -114,7 +114,7 @@
      {								\
        register int _a1 asm ("a1");				\
        LOAD_ARGS_##nr (args)					\
-       asm volatile ("swi %1"					\
+       asm volatile ("swi	%1	@ syscall " #name	\
 		     : "=r" (_a1)				\
 		     : "i" (SYS_ify(name)) ASM_ARGS_##nr	\
 		     : "a1");					\
diff --git a/sysdeps/unix/sysv/linux/arm/vfork.S b/sysdeps/unix/sysv/linux/arm/vfork.S
new file mode 100644
index 0000000000..3d5bd95300
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arm/vfork.S
@@ -0,0 +1,50 @@
+/* Copyright (C) 1999 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Philip Blundell <philb@gnu.org>.
+
+   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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <sysdep.h>
+#define _ERRNO_H	1
+#include <bits/errno.h>
+
+/* Clone the calling process, but without copying the whole address space.
+   The calling process is suspended until the new process exits or is
+   replaced by a call to `execve'.  Return -1 for errors, 0 to the new process,
+   and the process ID of the new process to the old process.  */
+
+ENTRY (__vfork)
+
+#ifdef __NR_vfork
+	swi	__NR_vfork
+	cmn	a1, #4096
+	RETINSTR(movcc, pc, lr)
+
+	/* Check if vfork syscall is known at all.  */
+	ldr	a2, =-ENOSYS
+	teq	a1, a2
+	bne	PLTJMP(C_SYMBOL_NAME(__syscall_error))
+#endif
+
+	/* If we don't have vfork, fork is close enough.  */
+	swi	__NR_fork
+	cmn	a1, #4096
+	RETINSTR(movcc, pc, lr)
+    	b	PLTJMP(C_SYMBOL_NAME(__syscall_error))
+	
+PSEUDO_END (__vfork)
+
+weak_alias (__vfork, vfork)