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

3 files changed, 246 insertions, 0 deletions

diff --git a/sysdeps/hppa/elf/entry.h b/sysdeps/hppa/elf/entry.h
new file mode 100644
index 0000000000..b024db2be7
--- /dev/null
+++ b/sysdeps/hppa/elf/entry.h
@@ -0,0 +1,10 @@
+#ifndef __ASSEMBLY__
+extern void _start (void);
+#endif
+
+/* The function's entry point is stored in the first word of the
+   function descriptor (plabel) of _start().  */
+#define ENTRY_POINT __canonicalize_funcptr_for_compare(_start)
+
+/* We have to provide a special declaration.  */
+#define ENTRY_POINT_DECL(class) class void _start (void);
diff --git a/sysdeps/hppa/elf/initfini.c b/sysdeps/hppa/elf/initfini.c
new file mode 100644
index 0000000000..35f5dd52fe
--- /dev/null
+++ b/sysdeps/hppa/elf/initfini.c
@@ -0,0 +1,139 @@
+/* Special .init and .fini section support for HPPA
+   Copyright (C) 2000, 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.
+
+   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.  */
+
+/* This file is compiled into assembly code which is then munged by a sed
+   script into two files: crti.s and crtn.s.
+
+   * crti.s puts a function prologue at the beginning of the
+   .init and .fini sections and defines global symbols for
+   those addresses, so they can be called as functions.
+
+   * crtn.s puts the corresponding function epilogues
+   in the .init and .fini sections. */
+
+/* If we use the standard C version, the linkage table pointer won't
+   be properly preserved due to the splitting up of function prologues
+   and epilogues.  Therefore we write these in assembly to make sure
+   they do the right thing.
+
+   Note that we cannot have a weak undefined __gmon_start__, because
+   that would require this to be PIC, and the linker is currently not
+   able to generate a proper procedure descriptor for _init.  Sad but
+   true.  Anyway, HPPA is one of those horrible architectures where
+   making the comparison and indirect call is quite expensive (see the
+   comment in sysdeps/generic/initfini.c). */
+
+__asm__ ("\
+\n\
+#include \"defs.h\"\n\
+\n\
+/*@HEADER_ENDS*/\n\
+\n\
+/*@_init_PROLOG_BEGINS*/\n\
+	.section .init\n\
+	.align 4\n\
+	.globl _init\n\
+	.type _init,@function\n\
+_init:\n\
+	stw	%rp,-20(%sp)\n\
+	stwm	%r4,64(%sp)\n\
+	stw	%r19,-32(%sp)\n\
+	bl	__gmon_start__,%rp\n\
+	copy	%r19,%r4	/* delay slot */\n\
+	copy	%r4,%r19\n\
+/*@_init_PROLOG_ENDS*/\n\
+\n\
+/*@_init_EPILOG_BEGINS*/\n\
+        .text\n\
+        .align 4\n\
+        .weak   __gmon_start__\n\
+        .type    __gmon_start__,@function\n\
+__gmon_start__:\n\
+	.proc\n\
+	.callinfo\n\
+	.entry\n\
+        bv,n %r0(%r2)\n\
+	.exit\n\
+	.procend\n\
+\n\
+/* Here is the tail end of _init.  We put __gmon_start before this so\n\
+   that the assembler creates the .PARISC.unwind section for us, ie.\n\
+   with the right attributes.  */\n\
+	.section .init\n\
+	ldw	-84(%sp),%rp\n\
+	copy	%r4,%r19\n\
+	bv	%r0(%rp)\n\
+_end_init:\n\
+	ldwm	-64(%sp),%r4\n\
+\n\
+/* Our very own unwind info, because the assembler can't handle\n\
+   functions split into two or more pieces.  */\n\
+	.section .PARISC.unwind\n\
+	.extern _init\n\
+	.word	_init, _end_init\n\
+	.byte	0x08, 0x01, 0x00, 0x08, 0x00, 0x00, 0x00, 0x08\n\
+\n\
+/*@_init_EPILOG_ENDS*/\n\
+\n\
+/*@_fini_PROLOG_BEGINS*/\n\
+	.section .fini\n\
+	.align 4\n\
+	.globl _fini\n\
+	.type _fini,@function\n\
+_fini:\n\
+	stw	%rp,-20(%sp)\n\
+	stwm	%r4,64(%sp)\n\
+	stw	%r19,-32(%sp)\n\
+	copy	%r19,%r4\n\
+/*@_fini_PROLOG_ENDS*/\n\
+\n\
+/*@_fini_EPILOG_BEGINS*/\n\
+	.section .fini\n\
+	ldw	-84(%sp),%rp\n\
+	copy	%r4,%r19\n\
+	bv	%r0(%rp)\n\
+_end_fini:\n\
+	ldwm	-64(%sp),%r4\n\
+\n\
+	.section .PARISC.unwind\n\
+	.extern _fini\n\
+	.word	_fini, _end_fini\n\
+	.byte	0x08, 0x01, 0x00, 0x08, 0x00, 0x00, 0x00, 0x08\n\
+\n\
+/*@_fini_EPILOG_ENDS*/\n\
+\n\
+/*@TRAILER_BEGINS*/\
+");
diff --git a/sysdeps/hppa/elf/start.S b/sysdeps/hppa/elf/start.S
new file mode 100644
index 0000000000..4cf832a2f6
--- /dev/null
+++ b/sysdeps/hppa/elf/start.S
@@ -0,0 +1,97 @@
+/* ELF startup code for HPPA.
+   Copyright (C) 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.
+
+   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.  */
+
+	.text
+
+	.align 4
+
+	.import main, code
+	.import $global$, data
+	.import __libc_start_main, code
+	.import __libc_csu_fini, code
+	.import __libc_csu_init, code
+
+	.globl _start
+	.export _start, ENTRY
+	.type _start,@function
+_start:
+
+	.proc
+	.callinfo
+
+	/* load main */
+	ldil	LP%main, %r26
+	ldo	RP%main(%r26), %r26
+
+	/* argc and argv should be in 25 and 24 */
+
+	/* Expand the stack to store the 5th through 7th args */
+	ldo	64(%sp), %sp
+
+	/* void (*rtld_fini) (void) (actually the 6th arg) */
+	stw	%r23, -56(%sp)
+
+	/* void (*init) (void) */
+	ldil	LP%__libc_csu_init, %r23
+	ldo	RP%__libc_csu_init(%r23), %r23
+
+	/* void (*fini) (void) */
+	ldil	LP%__libc_csu_fini, %r22
+	ldo	RP%__libc_csu_fini(%r22), %r22
+	stw	%r22, -52(%sp)
+
+	/* void *stack_end */
+	stw	%sp, -60(%sp)
+
+	/* load global */
+	ldil	L%$global$, %dp
+	ldo	R%$global$(%dp), %dp
+
+	bl	__libc_start_main,%r2
+	nop
+	/* die horribly if it returned (it shouldn't) */
+	iitlbp %r0,(%r0)
+	nop
+
+	.procend
+
+/* Define a symbol for the first piece of initialized data.  */
+	.data
+	.globl __data_start
+__data_start:
+	.long 0
+	.weak data_start
+	data_start = __data_start