diff options
Diffstat (limited to 'packages/glibc/glibc-cvs/eabi-patch-3')
| -rw-r--r-- | packages/glibc/glibc-cvs/eabi-patch-3 | 430 |
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> +Delivered-To: listarch-libc-alpha at sources dot redhat dot com +Received: (qmail 20972 invoked by alias); 22 Mar 2005 16:08:29 -0000 +Mailing-List: contact libc-alpha-help at sources dot redhat dot com; run by ezmlm +Precedence: bulk +List-Subscribe: <mailto:libc-alpha-subscribe at sources dot redhat dot com> +List-Archive: <http://sources.redhat.com/ml/libc-alpha/> +List-Post: <mailto:libc-alpha at sources dot redhat dot com> +List-Help: <mailto:libc-alpha-help at sources dot redhat dot com>, <http://sources dot redhat dot com/ml/#faqs> +Sender: libc-alpha-owner at sources dot redhat dot com +Delivered-To: mailing list libc-alpha at sources dot redhat dot com +Received: (qmail 20165 invoked from network); 22 Mar 2005 16:08:06 -0000 +Received: from unknown (HELO nevyn.them.org) (66.93.172.17) + by sourceware dot org with SMTP; 22 Mar 2005 16:08:06 -0000 +Received: from drow by nevyn.them.org with local (Exim 4.50 #1 (Debian)) + 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 + |