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-rw-r--r--meta/packages/glibc/glibc-cvs/eabi-patch-3430
1 files changed, 430 insertions, 0 deletions
diff --git a/meta/packages/glibc/glibc-cvs/eabi-patch-3 b/meta/packages/glibc/glibc-cvs/eabi-patch-3
new file mode 100644
index 0000000000..9bd549ec2b
--- /dev/null
+++ b/meta/packages/glibc/glibc-cvs/eabi-patch-3
@@ -0,0 +1,430 @@
1From 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
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17 id 1DDlvX-0006tE-Bh; Tue, 22 Mar 2005 11:08:19 -0500
18Date: Tue, 22 Mar 2005 11:08:19 -0500
19From: Daniel Jacobowitz <drow at false dot org>
20To: libc-alpha at sources dot redhat dot com
21Cc: Phil Blundell <pb at reciva dot com>
22Subject: ARM EABI support - changes to existing ARM code
23Message-ID: <20050322160819.GA26216@nevyn.them.org>
24Mail-Followup-To: libc-alpha at sources dot redhat dot com,
25 Phil Blundell <pb at reciva dot com>
26Mime-Version: 1.0
27Content-Type: text/plain; charset=us-ascii
28Content-Disposition: inline
29User-Agent: Mutt/1.5.6+20040907i
30
31This patch updates the common ARM files for EABI support. The changes are:
32 - Old ARM ABI targets always use FPA (mixed-endian) byte ordering. EABI
33 targets always use VFP byte ordering for doubles, which is standard
34 ieee754 layout. Removing the arm-specific ieee754.h doesn't break FPA;
35 it was a specialized version of the common header, which handles FPA
36 but also handles VFP.
37 - The stack needs to be aligned to eight bytes instead of just four,
38 including in mmap2 and when shifting _dl_argv.
39 - We need some markers around _start to indicate end-of-stack for the
40 unwinder - ARM EABI does not use either SJLJ exceptions or DWARF-2
41 exceptions. It uses a table based format which seems to be not
42 quite completely unlike DWARF-2.
43
44Do these changes look OK?
45
46--
47Daniel Jacobowitz
48CodeSourcery, LLC
49
502005-03-22 Daniel Jacobowitz <dan@codesourcery.com>
51
52 * sysdeps/arm/bits/endian.h (__FLOAT_WORD_ORDER): Handle VFP.
53 * sysdeps/arm/gmp-mparam.h (IEEE_DOUBLE_BIG_ENDIAN,
54 IEEE_DOUBLE_MIXED_ENDIAN): Handle big-endian and VFP.
55 * sysdeps/arm/ieee754.h: Remove.
56
57 * sysdeps/arm/dl-machine.h (_dl_start_user): Align the stack to eight
58 bytes even when shifting arguments.
59 * sysdeps/arm/dl-sysdep.h: New file.
60
61 * sysdeps/arm/elf/start.S (_start): If not using SJLJ exceptions, include
62 EABI unwind markers to terminate unwinding.
63
64 * sysdeps/unix/sysv/linux/arm/mmap64.S: Handle big-endian byte ordering
65 and EABI stack layout.
66
67Index: glibc/sysdeps/arm/bits/endian.h
68===================================================================
69--- glibc.orig/sysdeps/arm/bits/endian.h 2005-03-22 10:26:27.092978200 -0500
70+++ glibc/sysdeps/arm/bits/endian.h 2005-03-22 10:27:39.457490903 -0500
71@@ -9,4 +9,9 @@
72 #else
73 #define __BYTE_ORDER __LITTLE_ENDIAN
74 #endif
75+
76+#ifdef __VFP_FP__
77+#define __FLOAT_WORD_ORDER __BYTE_ORDER
78+#else
79 #define __FLOAT_WORD_ORDER __BIG_ENDIAN
80+#endif
81Index: glibc/sysdeps/arm/dl-machine.h
82===================================================================
83--- glibc.orig/sysdeps/arm/dl-machine.h 2005-03-22 10:26:27.092978200 -0500
84+++ glibc/sysdeps/arm/dl-machine.h 2005-03-22 10:27:39.457490903 -0500
85@@ -156,22 +156,19 @@ _dl_start_user:\n\
86 add sl, pc, sl\n\
87 .L_GOT_GOT:\n\
88 ldr r4, [sl, r4]\n\
89- @ get the original arg count\n\
90- ldr r1, [sp]\n\
91 @ save the entry point in another register\n\
92 mov r6, r0\n\
93- @ adjust the stack pointer to skip the extra args\n\
94- add sp, sp, r4, lsl #2\n\
95- @ subtract _dl_skip_args from original arg count\n\
96- sub r1, r1, r4\n\
97+ @ get the original arg count\n\
98+ ldr r1, [sp]\n\
99 @ get the argv address\n\
100 add r2, sp, #4\n\
101- @ store the new argc in the new stack location\n\
102- str r1, [sp]\n\
103+ @ Fix up the stack if necessary.\n\
104+ cmp r4, #0\n\
105+ bne .L_fixup_stack\n\
106+.L_done_fixup:\n\
107 @ compute envp\n\
108 add r3, r2, r1, lsl #2\n\
109 add r3, r3, #4\n\
110-\n\
111 @ now we call _dl_init\n\
112 ldr r0, .L_LOADED\n\
113 ldr r0, [sl, r0]\n\
114@@ -182,12 +179,45 @@ _dl_start_user:\n\
115 add r0, sl, r0\n\
116 @ jump to the user_s entry point\n\
117 " BX(r6) "\n\
118+\n\
119+ @ iWMMXt and EABI targets require the stack to be eight byte\n\
120+ @ aligned - shuffle arguments etc.\n\
121+.L_fixup_stack:\n\
122+ @ subtract _dl_skip_args from original arg count\n\
123+ sub r1, r1, r4\n\
124+ @ store the new argc in the new stack location\n\
125+ str r1, [sp]\n\
126+ @ find the first unskipped argument\n\
127+ mov r3, r2\n\
128+ add r4, r2, r4, lsl #2\n\
129+ @ shuffle argv down\n\
130+1: ldr r5, [r4], #4\n\
131+ str r5, [r3], #4\n\
132+ cmp r5, #0\n\
133+ bne 1b\n\
134+ @ shuffle envp down\n\
135+1: ldr r5, [r4], #4\n\
136+ str r5, [r3], #4\n\
137+ cmp r5, #0\n\
138+ bne 1b\n\
139+ @ shuffle auxv down\n\
140+1: ldmia r4!, {r0, r5}\n\
141+ stmia r3!, {r0, r5}\n\
142+ cmp r0, #0\n\
143+ bne 1b\n\
144+ @ Update _dl_argv\n\
145+ ldr r3, .L_ARGV\n\
146+ str r2, [sl, r3]\n\
147+ b .L_done_fixup\n\
148+\n\
149 .L_GET_GOT:\n\
150 .word _GLOBAL_OFFSET_TABLE_ - .L_GOT_GOT - 4\n\
151 .L_SKIP_ARGS:\n\
152 .word _dl_skip_args(GOTOFF)\n\
153 .L_FINI_PROC:\n\
154 .word _dl_fini(GOTOFF)\n\
155+.L_ARGV:\n\
156+ .word _dl_argv(GOTOFF)\n\
157 .L_LOADED:\n\
158 .word _rtld_local(GOTOFF)\n\
159 .previous\n\
160Index: glibc/sysdeps/arm/dl-sysdep.h
161===================================================================
162--- /dev/null 1970-01-01 00:00:00.000000000 +0000
163+++ glibc/sysdeps/arm/dl-sysdep.h 2005-03-22 10:27:39.458490675 -0500
164@@ -0,0 +1,41 @@
165+/* System-specific settings for dynamic linker code. ARM version.
166+ Copyright (C) 2004, 2005 Free Software Foundation, Inc.
167+ This file is part of the GNU C Library.
168+
169+ The GNU C Library is free software; you can redistribute it and/or
170+ modify it under the terms of the GNU Lesser General Public
171+ License as published by the Free Software Foundation; either
172+ version 2.1 of the License, or (at your option) any later version.
173+
174+ The GNU C Library is distributed in the hope that it will be useful,
175+ but WITHOUT ANY WARRANTY; without even the implied warranty of
176+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
177+ Lesser General Public License for more details.
178+
179+ You should have received a copy of the GNU Lesser General Public
180+ License along with the GNU C Library; if not, write to the Free
181+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
182+ 02111-1307 USA. */
183+
184+#ifndef _DL_SYSDEP_H
185+#define _DL_SYSDEP_H 1
186+
187+/* This macro must be defined to either 0 or 1.
188+
189+ If 1, then an errno global variable hidden in ld.so will work right with
190+ all the errno-using libc code compiled for ld.so, and there is never a
191+ need to share the errno location with libc. This is appropriate only if
192+ all the libc functions that ld.so uses are called without PLT and always
193+ get the versions linked into ld.so rather than the libc ones. */
194+
195+#ifdef IS_IN_rtld
196+# define RTLD_PRIVATE_ERRNO 1
197+#else
198+# define RTLD_PRIVATE_ERRNO 0
199+#endif
200+
201+/* _dl_argv cannot be attribute_relro, because _dl_start_user
202+ might write into it after _dl_start returns. */
203+#define DL_ARGV_NOT_RELRO 1
204+
205+#endif /* dl-sysdep.h */
206Index: glibc/sysdeps/arm/elf/start.S
207===================================================================
208--- glibc.orig/sysdeps/arm/elf/start.S 2005-03-22 10:26:27.096977288 -0500
209+++ glibc/sysdeps/arm/elf/start.S 2005-03-22 11:00:35.178522707 -0500
210@@ -1,5 +1,6 @@
211 /* Startup code for ARM & ELF
212- Copyright (C) 1995, 1996, 1997, 1998, 2001, 2002 Free Software Foundation, Inc.
213+ Copyright (C) 1995, 1996, 1997, 1998, 2001, 2002, 2005
214+ Free Software Foundation, Inc.
215 This file is part of the GNU C Library.
216
217 The GNU C Library is free software; you can redistribute it and/or
218@@ -62,6 +63,10 @@
219 .globl _start
220 .type _start,#function
221 _start:
222+#if !defined(__USING_SJLJ_EXCEPTIONS__)
223+ /* Protect against unhandled exceptions. */
224+ .fnstart
225+#endif
226 /* Fetch address of fini */
227 ldr ip, =__libc_csu_fini
228
229@@ -93,6 +98,11 @@ _start:
230 /* should never get here....*/
231 bl abort
232
233+#if !defined(__USING_SJLJ_EXCEPTIONS__)
234+ .cantunwind
235+ .fnend
236+#endif
237+
238 /* Define a symbol for the first piece of initialized data. */
239 .data
240 .globl __data_start
241Index: glibc/sysdeps/arm/gmp-mparam.h
242===================================================================
243--- glibc.orig/sysdeps/arm/gmp-mparam.h 2005-03-22 10:26:27.092978200 -0500
244+++ glibc/sysdeps/arm/gmp-mparam.h 2005-03-22 11:00:42.795683773 -0500
245@@ -1,6 +1,6 @@
246 /* gmp-mparam.h -- Compiler/machine parameter header file.
247
248-Copyright (C) 1991, 1993, 1994, 1995 Free Software Foundation, Inc.
249+Copyright (C) 1991, 1993, 1994, 1995, 2005 Free Software Foundation, Inc.
250
251 This file is part of the GNU MP Library.
252
253@@ -26,5 +26,13 @@ MA 02111-1307, USA. */
254 #define BITS_PER_SHORTINT 16
255 #define BITS_PER_CHAR 8
256
257-#define IEEE_DOUBLE_BIG_ENDIAN 0
258-#define IEEE_DOUBLE_MIXED_ENDIAN 1
259+#if defined(__ARMEB__)
260+# define IEEE_DOUBLE_MIXED_ENDIAN 0
261+# define IEEE_DOUBLE_BIG_ENDIAN 1
262+#elif defined(__VFP_FP__)
263+# define IEEE_DOUBLE_MIXED_ENDIAN 0
264+# define IEEE_DOUBLE_BIG_ENDIAN 0
265+#else
266+# define IEEE_DOUBLE_BIG_ENDIAN 0
267+# define IEEE_DOUBLE_MIXED_ENDIAN 1
268+#endif
269Index: glibc/sysdeps/arm/ieee754.h
270===================================================================
271--- glibc.orig/sysdeps/arm/ieee754.h 2005-03-22 10:26:27.092978200 -0500
272+++ /dev/null 1970-01-01 00:00:00.000000000 +0000
273@@ -1,115 +0,0 @@
274-/* Copyright (C) 1992, 1995, 1996, 1998 Free Software Foundation, Inc.
275- This file is part of the GNU C Library.
276-
277- The GNU C Library is free software; you can redistribute it and/or
278- modify it under the terms of the GNU Lesser General Public
279- License as published by the Free Software Foundation; either
280- version 2.1 of the License, or (at your option) any later version.
281-
282- The GNU C Library is distributed in the hope that it will be useful,
283- but WITHOUT ANY WARRANTY; without even the implied warranty of
284- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
285- Lesser General Public License for more details.
286-
287- You should have received a copy of the GNU Lesser General Public
288- License along with the GNU C Library; if not, write to the Free
289- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
290- 02111-1307 USA. */
291-
292-#ifndef _IEEE754_H
293-
294-#define _IEEE754_H 1
295-#include <features.h>
296-
297-#include <endian.h>
298-
299-__BEGIN_DECLS
300-
301-union ieee754_float
302- {
303- float f;
304-
305- /* This is the IEEE 754 single-precision format. */
306- struct
307- {
308- unsigned int mantissa:23;
309- unsigned int exponent:8;
310- unsigned int negative:1;
311- } ieee;
312-
313- /* This format makes it easier to see if a NaN is a signalling NaN. */
314- struct
315- {
316- unsigned int mantissa:22;
317- unsigned int quiet_nan:1;
318- unsigned int exponent:8;
319- unsigned int negative:1;
320- } ieee_nan;
321- };
322-
323-#define IEEE754_FLOAT_BIAS 0x7f /* Added to exponent. */
324-
325-
326-union ieee754_double
327- {
328- double d;
329-
330- /* This is the IEEE 754 double-precision format. */
331- struct
332- {
333- unsigned int mantissa0:20;
334- unsigned int exponent:11;
335- unsigned int negative:1;
336- unsigned int mantissa1:32;
337- } ieee;
338-
339- /* This format makes it easier to see if a NaN is a signalling NaN. */
340- struct
341- {
342- unsigned int mantissa0:19;
343- unsigned int quiet_nan:1;
344- unsigned int exponent:11;
345- unsigned int negative:1;
346- unsigned int mantissa1:32;
347- } ieee_nan;
348- };
349-
350-#define IEEE754_DOUBLE_BIAS 0x3ff /* Added to exponent. */
351-
352-
353-/* The following two structures are correct for `new' floating point systems but
354- wrong for the old FPPC. The only solution seems to be to avoid their use on
355- old hardware. */
356-
357-union ieee854_long_double
358- {
359- long double d;
360-
361- /* This is the IEEE 854 double-extended-precision format. */
362- struct
363- {
364- unsigned int exponent:15;
365- unsigned int empty:16;
366- unsigned int negative:1;
367- unsigned int mantissa1:32;
368- unsigned int mantissa0:32;
369- } ieee;
370-
371- /* This is for NaNs in the IEEE 854 double-extended-precision format. */
372- struct
373- {
374- unsigned int exponent:15;
375- unsigned int empty:16;
376- unsigned int negative:1;
377- unsigned int mantissa1:32;
378- unsigned int mantissa0:30;
379- unsigned int quiet_nan:1;
380- unsigned int one:1;
381- } ieee_nan;
382- };
383-
384-#define IEEE854_LONG_DOUBLE_BIAS 0x3fff
385-
386-__END_DECLS
387-
388-#endif /* ieee754.h */
389Index: glibc/sysdeps/unix/sysv/linux/arm/mmap64.S
390===================================================================
391--- glibc.orig/sysdeps/unix/sysv/linux/arm/mmap64.S 2005-03-22 10:26:27.097977060 -0500
392+++ glibc/sysdeps/unix/sysv/linux/arm/mmap64.S 2005-03-22 11:00:53.051209928 -0500
393@@ -1,4 +1,4 @@
394-/* Copyright (C) 2000, 2003 Free Software Foundation, Inc.
395+/* Copyright (C) 2000, 2003, 2005 Free Software Foundation, Inc.
396 This file is part of the GNU C Library.
397
398 The GNU C Library is free software; you can redistribute it and/or
399@@ -23,13 +23,28 @@
400
401 #include "kernel-features.h"
402
403+#ifdef __ARM_EABI__
404+# define INITIAL_OFFSET 8
405+#else
406+# define INITIAL_OFFSET 4
407+#endif
408+
409+#ifdef __ARMEB__
410+# define LOW_OFFSET INITIAL_OFFSET + 4
411+/* The initial + 4 is for the stack postdecrement. */
412+# define HIGH_OFFSET 4 + INITIAL_OFFSET + 0
413+#else
414+# define LOW_OFFSET INITIAL_OFFSET + 0
415+# define HIGH_OFFSET 4 + INITIAL_OFFSET + 4
416+#endif
417+
418 /* The mmap2 system call takes six arguments, all in registers. */
419 .text
420 ENTRY (__mmap64)
421 #ifdef __NR_mmap2
422- ldr ip, [sp, $4] @ offset low part
423+ ldr ip, [sp, $LOW_OFFSET] @ offset low part
424 str r5, [sp, #-4]!
425- ldr r5, [sp, $12] @ offset high part
426+ ldr r5, [sp, $HIGH_OFFSET] @ offset high part
427 str r4, [sp, #-4]!
428 movs r4, ip, lsl $20 @ check that offset is page-aligned
429 mov ip, ip, lsr $12
430
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