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authorKoen Kooi <koen@openembedded.org>2005-06-30 08:19:37 +0000
committerOpenEmbedded Project <openembedded-devel@lists.openembedded.org>2005-06-30 08:19:37 +0000
commitc8e5702127e507e82e6f68a4b8c546803accea9d (patch)
tree00583491f40ecc640f2b28452af995e3a63a09d7 /packages/glibc/glibc-cvs/eabi-patch-3
parent87ec8ca4d2e2eb4d1c1e1e1a6b46a395d56805b9 (diff)
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Diffstat (limited to 'packages/glibc/glibc-cvs/eabi-patch-3')
-rw-r--r--packages/glibc/glibc-cvs/eabi-patch-3430
1 files changed, 430 insertions, 0 deletions
diff --git a/packages/glibc/glibc-cvs/eabi-patch-3 b/packages/glibc/glibc-cvs/eabi-patch-3
index e69de29bb2..9bd549ec2b 100644
--- a/packages/glibc/glibc-cvs/eabi-patch-3
+++ b/packages/glibc/glibc-cvs/eabi-patch-3
@@ -0,0 +1,430 @@
+From libc-alpha-return-17228-listarch-libc-alpha=sources dot redhat dot com at sources dot redhat dot com Tue Mar 22 16:08:31 2005
+Return-Path: <libc-alpha-return-17228-listarch-libc-alpha=sources dot redhat dot com at sources dot redhat dot com>
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+ id 1DDlvX-0006tE-Bh; Tue, 22 Mar 2005 11:08:19 -0500
+Date: Tue, 22 Mar 2005 11:08:19 -0500
+From: Daniel Jacobowitz <drow at false dot org>
+To: libc-alpha at sources dot redhat dot com
+Cc: Phil Blundell <pb at reciva dot com>
+Subject: ARM EABI support - changes to existing ARM code
+Message-ID: <20050322160819.GA26216@nevyn.them.org>
+Mail-Followup-To: libc-alpha at sources dot redhat dot com,
+ Phil Blundell <pb at reciva dot com>
+Mime-Version: 1.0
+Content-Type: text/plain; charset=us-ascii
+Content-Disposition: inline
+User-Agent: Mutt/1.5.6+20040907i
+
+This patch updates the common ARM files for EABI support. The changes are:
+ - Old ARM ABI targets always use FPA (mixed-endian) byte ordering. EABI
+ targets always use VFP byte ordering for doubles, which is standard
+ ieee754 layout. Removing the arm-specific ieee754.h doesn't break FPA;
+ it was a specialized version of the common header, which handles FPA
+ but also handles VFP.
+ - The stack needs to be aligned to eight bytes instead of just four,
+ including in mmap2 and when shifting _dl_argv.
+ - We need some markers around _start to indicate end-of-stack for the
+ unwinder - ARM EABI does not use either SJLJ exceptions or DWARF-2
+ exceptions. It uses a table based format which seems to be not
+ quite completely unlike DWARF-2.
+
+Do these changes look OK?
+
+--
+Daniel Jacobowitz
+CodeSourcery, LLC
+
+2005-03-22 Daniel Jacobowitz <dan@codesourcery.com>
+
+ * sysdeps/arm/bits/endian.h (__FLOAT_WORD_ORDER): Handle VFP.
+ * sysdeps/arm/gmp-mparam.h (IEEE_DOUBLE_BIG_ENDIAN,
+ IEEE_DOUBLE_MIXED_ENDIAN): Handle big-endian and VFP.
+ * sysdeps/arm/ieee754.h: Remove.
+
+ * sysdeps/arm/dl-machine.h (_dl_start_user): Align the stack to eight
+ bytes even when shifting arguments.
+ * sysdeps/arm/dl-sysdep.h: New file.
+
+ * sysdeps/arm/elf/start.S (_start): If not using SJLJ exceptions, include
+ EABI unwind markers to terminate unwinding.
+
+ * sysdeps/unix/sysv/linux/arm/mmap64.S: Handle big-endian byte ordering
+ and EABI stack layout.
+
+Index: glibc/sysdeps/arm/bits/endian.h
+===================================================================
+--- glibc.orig/sysdeps/arm/bits/endian.h 2005-03-22 10:26:27.092978200 -0500
++++ glibc/sysdeps/arm/bits/endian.h 2005-03-22 10:27:39.457490903 -0500
+@@ -9,4 +9,9 @@
+ #else
+ #define __BYTE_ORDER __LITTLE_ENDIAN
+ #endif
++
++#ifdef __VFP_FP__
++#define __FLOAT_WORD_ORDER __BYTE_ORDER
++#else
+ #define __FLOAT_WORD_ORDER __BIG_ENDIAN
++#endif
+Index: glibc/sysdeps/arm/dl-machine.h
+===================================================================
+--- glibc.orig/sysdeps/arm/dl-machine.h 2005-03-22 10:26:27.092978200 -0500
++++ glibc/sysdeps/arm/dl-machine.h 2005-03-22 10:27:39.457490903 -0500
+@@ -156,22 +156,19 @@ _dl_start_user:\n\
+ add sl, pc, sl\n\
+ .L_GOT_GOT:\n\
+ ldr r4, [sl, r4]\n\
+- @ get the original arg count\n\
+- ldr r1, [sp]\n\
+ @ save the entry point in another register\n\
+ mov r6, r0\n\
+- @ adjust the stack pointer to skip the extra args\n\
+- add sp, sp, r4, lsl #2\n\
+- @ subtract _dl_skip_args from original arg count\n\
+- sub r1, r1, r4\n\
++ @ get the original arg count\n\
++ ldr r1, [sp]\n\
+ @ get the argv address\n\
+ add r2, sp, #4\n\
+- @ store the new argc in the new stack location\n\
+- str r1, [sp]\n\
++ @ Fix up the stack if necessary.\n\
++ cmp r4, #0\n\
++ bne .L_fixup_stack\n\
++.L_done_fixup:\n\
+ @ compute envp\n\
+ add r3, r2, r1, lsl #2\n\
+ add r3, r3, #4\n\
+-\n\
+ @ now we call _dl_init\n\
+ ldr r0, .L_LOADED\n\
+ ldr r0, [sl, r0]\n\
+@@ -182,12 +179,45 @@ _dl_start_user:\n\
+ add r0, sl, r0\n\
+ @ jump to the user_s entry point\n\
+ " BX(r6) "\n\
++\n\
++ @ iWMMXt and EABI targets require the stack to be eight byte\n\
++ @ aligned - shuffle arguments etc.\n\
++.L_fixup_stack:\n\
++ @ subtract _dl_skip_args from original arg count\n\
++ sub r1, r1, r4\n\
++ @ store the new argc in the new stack location\n\
++ str r1, [sp]\n\
++ @ find the first unskipped argument\n\
++ mov r3, r2\n\
++ add r4, r2, r4, lsl #2\n\
++ @ shuffle argv down\n\
++1: ldr r5, [r4], #4\n\
++ str r5, [r3], #4\n\
++ cmp r5, #0\n\
++ bne 1b\n\
++ @ shuffle envp down\n\
++1: ldr r5, [r4], #4\n\
++ str r5, [r3], #4\n\
++ cmp r5, #0\n\
++ bne 1b\n\
++ @ shuffle auxv down\n\
++1: ldmia r4!, {r0, r5}\n\
++ stmia r3!, {r0, r5}\n\
++ cmp r0, #0\n\
++ bne 1b\n\
++ @ Update _dl_argv\n\
++ ldr r3, .L_ARGV\n\
++ str r2, [sl, r3]\n\
++ b .L_done_fixup\n\
++\n\
+ .L_GET_GOT:\n\
+ .word _GLOBAL_OFFSET_TABLE_ - .L_GOT_GOT - 4\n\
+ .L_SKIP_ARGS:\n\
+ .word _dl_skip_args(GOTOFF)\n\
+ .L_FINI_PROC:\n\
+ .word _dl_fini(GOTOFF)\n\
++.L_ARGV:\n\
++ .word _dl_argv(GOTOFF)\n\
+ .L_LOADED:\n\
+ .word _rtld_local(GOTOFF)\n\
+ .previous\n\
+Index: glibc/sysdeps/arm/dl-sysdep.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ glibc/sysdeps/arm/dl-sysdep.h 2005-03-22 10:27:39.458490675 -0500
+@@ -0,0 +1,41 @@
++/* System-specific settings for dynamic linker code. ARM version.
++ Copyright (C) 2004, 2005 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. */
++
++#ifndef _DL_SYSDEP_H
++#define _DL_SYSDEP_H 1
++
++/* This macro must be defined to either 0 or 1.
++
++ If 1, then an errno global variable hidden in ld.so will work right with
++ all the errno-using libc code compiled for ld.so, and there is never a
++ need to share the errno location with libc. This is appropriate only if
++ all the libc functions that ld.so uses are called without PLT and always
++ get the versions linked into ld.so rather than the libc ones. */
++
++#ifdef IS_IN_rtld
++# define RTLD_PRIVATE_ERRNO 1
++#else
++# define RTLD_PRIVATE_ERRNO 0
++#endif
++
++/* _dl_argv cannot be attribute_relro, because _dl_start_user
++ might write into it after _dl_start returns. */
++#define DL_ARGV_NOT_RELRO 1
++
++#endif /* dl-sysdep.h */
+Index: glibc/sysdeps/arm/elf/start.S
+===================================================================
+--- glibc.orig/sysdeps/arm/elf/start.S 2005-03-22 10:26:27.096977288 -0500
++++ glibc/sysdeps/arm/elf/start.S 2005-03-22 11:00:35.178522707 -0500
+@@ -1,5 +1,6 @@
+ /* Startup code for ARM & ELF
+- Copyright (C) 1995, 1996, 1997, 1998, 2001, 2002 Free Software Foundation, Inc.
++ Copyright (C) 1995, 1996, 1997, 1998, 2001, 2002, 2005
++ 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
+@@ -62,6 +63,10 @@
+ .globl _start
+ .type _start,#function
+ _start:
++#if !defined(__USING_SJLJ_EXCEPTIONS__)
++ /* Protect against unhandled exceptions. */
++ .fnstart
++#endif
+ /* Fetch address of fini */
+ ldr ip, =__libc_csu_fini
+
+@@ -93,6 +98,11 @@ _start:
+ /* should never get here....*/
+ bl abort
+
++#if !defined(__USING_SJLJ_EXCEPTIONS__)
++ .cantunwind
++ .fnend
++#endif
++
+ /* Define a symbol for the first piece of initialized data. */
+ .data
+ .globl __data_start
+Index: glibc/sysdeps/arm/gmp-mparam.h
+===================================================================
+--- glibc.orig/sysdeps/arm/gmp-mparam.h 2005-03-22 10:26:27.092978200 -0500
++++ glibc/sysdeps/arm/gmp-mparam.h 2005-03-22 11:00:42.795683773 -0500
+@@ -1,6 +1,6 @@
+ /* gmp-mparam.h -- Compiler/machine parameter header file.
+
+-Copyright (C) 1991, 1993, 1994, 1995 Free Software Foundation, Inc.
++Copyright (C) 1991, 1993, 1994, 1995, 2005 Free Software Foundation, Inc.
+
+ This file is part of the GNU MP Library.
+
+@@ -26,5 +26,13 @@ MA 02111-1307, USA. */
+ #define BITS_PER_SHORTINT 16
+ #define BITS_PER_CHAR 8
+
+-#define IEEE_DOUBLE_BIG_ENDIAN 0
+-#define IEEE_DOUBLE_MIXED_ENDIAN 1
++#if defined(__ARMEB__)
++# define IEEE_DOUBLE_MIXED_ENDIAN 0
++# define IEEE_DOUBLE_BIG_ENDIAN 1
++#elif defined(__VFP_FP__)
++# define IEEE_DOUBLE_MIXED_ENDIAN 0
++# define IEEE_DOUBLE_BIG_ENDIAN 0
++#else
++# define IEEE_DOUBLE_BIG_ENDIAN 0
++# define IEEE_DOUBLE_MIXED_ENDIAN 1
++#endif
+Index: glibc/sysdeps/arm/ieee754.h
+===================================================================
+--- glibc.orig/sysdeps/arm/ieee754.h 2005-03-22 10:26:27.092978200 -0500
++++ /dev/null 1970-01-01 00:00:00.000000000 +0000
+@@ -1,115 +0,0 @@
+-/* Copyright (C) 1992, 1995, 1996, 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. */
+-
+-#ifndef _IEEE754_H
+-
+-#define _IEEE754_H 1
+-#include <features.h>
+-
+-#include <endian.h>
+-
+-__BEGIN_DECLS
+-
+-union ieee754_float
+- {
+- float f;
+-
+- /* This is the IEEE 754 single-precision format. */
+- struct
+- {
+- unsigned int mantissa:23;
+- unsigned int exponent:8;
+- unsigned int negative:1;
+- } ieee;
+-
+- /* This format makes it easier to see if a NaN is a signalling NaN. */
+- struct
+- {
+- unsigned int mantissa:22;
+- unsigned int quiet_nan:1;
+- unsigned int exponent:8;
+- unsigned int negative:1;
+- } ieee_nan;
+- };
+-
+-#define IEEE754_FLOAT_BIAS 0x7f /* Added to exponent. */
+-
+-
+-union ieee754_double
+- {
+- double d;
+-
+- /* This is the IEEE 754 double-precision format. */
+- struct
+- {
+- unsigned int mantissa0:20;
+- unsigned int exponent:11;
+- unsigned int negative:1;
+- unsigned int mantissa1:32;
+- } ieee;
+-
+- /* This format makes it easier to see if a NaN is a signalling NaN. */
+- struct
+- {
+- unsigned int mantissa0:19;
+- unsigned int quiet_nan:1;
+- unsigned int exponent:11;
+- unsigned int negative:1;
+- unsigned int mantissa1:32;
+- } ieee_nan;
+- };
+-
+-#define IEEE754_DOUBLE_BIAS 0x3ff /* Added to exponent. */
+-
+-
+-/* The following two structures are correct for `new' floating point systems but
+- wrong for the old FPPC. The only solution seems to be to avoid their use on
+- old hardware. */
+-
+-union ieee854_long_double
+- {
+- long double d;
+-
+- /* This is the IEEE 854 double-extended-precision format. */
+- struct
+- {
+- unsigned int exponent:15;
+- unsigned int empty:16;
+- unsigned int negative:1;
+- unsigned int mantissa1:32;
+- unsigned int mantissa0:32;
+- } ieee;
+-
+- /* This is for NaNs in the IEEE 854 double-extended-precision format. */
+- struct
+- {
+- unsigned int exponent:15;
+- unsigned int empty:16;
+- unsigned int negative:1;
+- unsigned int mantissa1:32;
+- unsigned int mantissa0:30;
+- unsigned int quiet_nan:1;
+- unsigned int one:1;
+- } ieee_nan;
+- };
+-
+-#define IEEE854_LONG_DOUBLE_BIAS 0x3fff
+-
+-__END_DECLS
+-
+-#endif /* ieee754.h */
+Index: glibc/sysdeps/unix/sysv/linux/arm/mmap64.S
+===================================================================
+--- glibc.orig/sysdeps/unix/sysv/linux/arm/mmap64.S 2005-03-22 10:26:27.097977060 -0500
++++ glibc/sysdeps/unix/sysv/linux/arm/mmap64.S 2005-03-22 11:00:53.051209928 -0500
+@@ -1,4 +1,4 @@
+-/* Copyright (C) 2000, 2003 Free Software Foundation, Inc.
++/* Copyright (C) 2000, 2003, 2005 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
+@@ -23,13 +23,28 @@
+
+ #include "kernel-features.h"
+
++#ifdef __ARM_EABI__
++# define INITIAL_OFFSET 8
++#else
++# define INITIAL_OFFSET 4
++#endif
++
++#ifdef __ARMEB__
++# define LOW_OFFSET INITIAL_OFFSET + 4
++/* The initial + 4 is for the stack postdecrement. */
++# define HIGH_OFFSET 4 + INITIAL_OFFSET + 0
++#else
++# define LOW_OFFSET INITIAL_OFFSET + 0
++# define HIGH_OFFSET 4 + INITIAL_OFFSET + 4
++#endif
++
+ /* The mmap2 system call takes six arguments, all in registers. */
+ .text
+ ENTRY (__mmap64)
+ #ifdef __NR_mmap2
+- ldr ip, [sp, $4] @ offset low part
++ ldr ip, [sp, $LOW_OFFSET] @ offset low part
+ str r5, [sp, #-4]!
+- ldr r5, [sp, $12] @ offset high part
++ ldr r5, [sp, $HIGH_OFFSET] @ offset high part
+ str r4, [sp, #-4]!
+ movs r4, ip, lsl $20 @ check that offset is page-aligned
+ mov ip, ip, lsr $12
+