(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.

7 files changed, 290 insertions, 0 deletions

diff --git a/sysdeps/unix/arm/Dist b/sysdeps/unix/arm/Dist
new file mode 100644
index 0000000000..7785d5ee70
--- /dev/null
+++ b/sysdeps/unix/arm/Dist
@@ -0,0 +1 @@
+dl-brk.S
diff --git a/sysdeps/unix/arm/brk.S b/sysdeps/unix/arm/brk.S
new file mode 100644
index 0000000000..914e8a8bbe
--- /dev/null
+++ b/sysdeps/unix/arm/brk.S
@@ -0,0 +1,56 @@
+/* Copyright (C) 1991, 92, 93, 95, 97, 98 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 Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <sysdep.h>
+
+#ifndef	SYS_brk
+#define	SYS_brk	17
+#endif
+
+.data
+.globl C_SYMBOL_NAME(__curbrk)
+C_LABEL(__curbrk)
+#ifdef	HAVE_GNU_LD
+	.long C_SYMBOL_NAME(_end)
+#else
+	.long C_SYMBOL_NAME(end)
+#endif
+
+.text
+SYSCALL__ (brk, 1)
+#ifdef PIC
+	ldr r1, 1f
+	ldr r2, _cb_addr
+2:	add r1, pc, r1
+	add r1, r1, r2
+#else
+	ldr r1, _cb_addr
+#endif
+	str r0, [r1]
+	mov r0, $0
+	DO_RET (r14)
+#ifdef PIC
+1:	.long _GLOBAL_OFFSET_TABLE_ - 2b - 8
+_cb_addr:
+	.long C_SYMBOL_NAME(__curbrk)(GOTOFF)
+#else
+_cb_addr:
+	.long C_SYMBOL_NAME(__curbrk)
+#endif
+
+weak_alias (__brk, brk)
diff --git a/sysdeps/unix/arm/dl-brk.S b/sysdeps/unix/arm/dl-brk.S
new file mode 100644
index 0000000000..eeb96544e3
--- /dev/null
+++ b/sysdeps/unix/arm/dl-brk.S
@@ -0,0 +1 @@
+#include <brk.S>
diff --git a/sysdeps/unix/arm/fork.S b/sysdeps/unix/arm/fork.S
new file mode 100644
index 0000000000..bd00c92cfe
--- /dev/null
+++ b/sysdeps/unix/arm/fork.S
@@ -0,0 +1,34 @@
+/* Copyright (C) 1991,92,94,95,97,2002 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 Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <sysdep.h>
+
+/* ARM version.  */
+
+SYSCALL__ (fork, 0)
+	/* R1 is now 0 for the parent and 1 for the child.  Decrement it to
+	   make it -1 (all bits set) for the parent, and 0 (no bits set)
+	   for the child.  Then AND it with R0, so the parent gets
+	   R0&-1==R0, and the child gets R0&0==0.  */
+	sub r1, r1, $1
+	and r0, r0, r1
+	DO_RET (r14)
+PSEUDO_END (__fork)
+libc_hidden_def (__fork)
+
+weak_alias (__fork, fork)
diff --git a/sysdeps/unix/arm/start.c b/sysdeps/unix/arm/start.c
new file mode 100644
index 0000000000..6bf08b1d7f
--- /dev/null
+++ b/sysdeps/unix/arm/start.c
@@ -0,0 +1,97 @@
+/* Special startup code for ARM a.out binaries.
+   Copyright (C) 1998, 2004 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 Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   In addition to the permissions in the GNU Lesser General Public
+   License, the Free Software Foundation gives you unlimited
+   permission to link the compiled version of this file with other
+   programs, and to distribute those programs without any restriction
+   coming from the use of this file. (The GNU Lesser General Public
+   License restrictions do apply in other respects; for example, they
+   cover modification of the file, and distribution when not linked
+   into another program.)
+
+   Note that people who make modified versions of this file are not
+   obligated to grant this special exception for their modified
+   versions; it is their choice whether to do so. The GNU Lesser
+   General Public License gives permission to release a modified
+   version without this exception; this exception also makes it
+   possible to release a modified version which carries forward this
+   exception.
+
+   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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <errno.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sysdep.h>
+
+/* The first piece of initialized data.  */
+int __data_start = 0;
+#ifdef HAVE_WEAK_SYMBOLS
+weak_alias (__data_start, data_start)
+#endif
+
+extern void __libc_init (int argc, char **argv, char **envp);
+extern int main (int argc, char **argv, char **envp);
+
+/* N.B.: It is important that this be the first function.
+   This file is the first thing in the text section.  */
+
+/* If this was in C it might create its own stack frame and
+   screw up the arguments.  */
+#ifdef NO_UNDERSCORES
+asm (".text; .globl _start; _start: B start1");
+#else
+asm (".text; .globl __start; __start: B _start1");
+
+/* Make an alias called `start' (no leading underscore, so it can't
+   conflict with C symbols) for `_start'.  This is the name vendor crt0.o's
+   tend to use, and thus the name most linkers expect.  */
+asm (".set start, __start");
+#endif
+
+/* Fool gcc into thinking that more args are passed.  This makes it look
+   on the stack (correctly) for the real arguments.  It causes somewhat
+   strange register usage in start1(), but we aren't too bothered about
+   that at the moment. */
+#define DUMMIES a1, a2, a3, a4
+
+#ifdef	DUMMIES
+#define	ARG_DUMMIES	DUMMIES,
+#define	DECL_DUMMIES	int DUMMIES;
+#else
+#define	ARG_DUMMIES
+#define	DECL_DUMMIES
+#endif
+
+/* ARGSUSED */
+static void
+start1 (ARG_DUMMIES argc, argv, envp)
+     DECL_DUMMIES
+     int argc;
+     char **argv;
+     char **envp;
+{
+  /* Store a pointer to the environment.  */
+  __environ = envp;
+
+  /* Do C library initializations.  */
+  __libc_init (argc, argv, __environ);
+
+  /* Call the user program.  */
+  exit (main (argc, argv, __environ));
+}
diff --git a/sysdeps/unix/arm/sysdep.S b/sysdeps/unix/arm/sysdep.S
new file mode 100644
index 0000000000..4810805d85
--- /dev/null
+++ b/sysdeps/unix/arm/sysdep.S
@@ -0,0 +1,71 @@
+/* Copyright (C) 1991,92,93,94,95,96,97,98,2002,03 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 Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; 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
+#include <bits/errno.h>
+
+.globl C_SYMBOL_NAME(errno)
+.globl syscall_error
+
+#undef syscall_error
+#ifdef NO_UNDERSCORES
+__syscall_error:
+#else
+syscall_error:
+#endif
+#if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN
+	/* We translate the system's EWOULDBLOCK error into EAGAIN.
+	   The GNU C library always defines EWOULDBLOCK==EAGAIN.
+	   EWOULDBLOCK_sys is the original number.  */
+	cmp r0, $EWOULDBLOCK_sys /* Is it the old EWOULDBLOCK?  */
+	moveq r0, $EAGAIN	/* Yes; translate it to EAGAIN.  */
+#endif
+
+#ifdef _LIBC_REENTRANT
+	str lr, [sp, #-4]!
+	str r0, [sp, #-4]!
+	bl PLTJMP(C_SYMBOL_NAME(__errno_location))
+	ldr r1, [sp], #4
+	str r1, [r0]
+	mvn r0, $0
+	ldr pc, [sp], #4	
+#else
+#ifndef	PIC
+	ldr r1, 1f
+	str r0, [r1]
+	mvn r0, $0
+	DO_RET (r14)
+
+1:	.long C_SYMBOL_NAME(errno)
+#else
+	@ we have to establish our PIC register
+	ldr r2, 1f
+	ldr r1, 2f
+0:	add r2, pc, r2
+	str r0, [r1, r2]
+	mvn r0, $0
+	DO_RET (r14)
+
+1:	.word _GLOBAL_OFFSET_TABLE_ - 0b - 8
+2:	.word C_SYMBOL_NAME(errno)(GOTOFF)
+#endif
+#endif
+
+#undef	__syscall_error
+END (__syscall_error)
diff --git a/sysdeps/unix/arm/sysdep.h b/sysdeps/unix/arm/sysdep.h
new file mode 100644
index 0000000000..5f36272f27
--- /dev/null
+++ b/sysdeps/unix/arm/sysdep.h
@@ -0,0 +1,30 @@
+/* Copyright (C) 1997, 1998 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 Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <sysdeps/unix/sysdep.h>
+#include <sysdeps/arm/sysdep.h>
+
+/* Some definitions to allow the assembler in sysdeps/unix/ to build
+   without needing ARM-specific versions of all the files.  */
+
+#ifdef __ASSEMBLER__
+
+#define ret		DO_RET (r14)
+#define MOVE(a,b)	mov b,a
+
+#endif