Mercurial > hg > CbC > CbC_gcc

comparison gcc/config/arm/lib1funcs.asm @ 63:b7f97abdc517 gcc-4.6-20100522

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
update gcc from gcc-4.5.0 to gcc-4.6
author ryoma <e075725@ie.u-ryukyu.ac.jp>
date Mon, 24 May 2010 12:47:05 +0900
parents 77e2b8dfacca
children f6334be47118
comparison
equal deleted inserted replaced
56:3c8a44c06a95 63:b7f97abdc517
1 @ libgcc routines for ARM cpu. 1 @ libgcc routines for ARM cpu.
2 @ Division routines, written by Richard Earnshaw, (rearnsha@armltd.co.uk) 2 @ Division routines, written by Richard Earnshaw, (rearnsha@armltd.co.uk)
3 3
4 /* Copyright 1995, 1996, 1998, 1999, 2000, 2003, 2004, 2005, 2007, 2008, 4 /* Copyright 1995, 1996, 1998, 1999, 2000, 2003, 2004, 2005, 2007, 2008,
5 2009 Free Software Foundation, Inc. 5 2009, 2010 Free Software Foundation, Inc.
6 6
7 This file is free software; you can redistribute it and/or modify it 7 This file is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by the 8 under the terms of the GNU General Public License as published by the
9 Free Software Foundation; either version 3, or (at your option) any 9 Free Software Foundation; either version 3, or (at your option) any
10 later version. 10 later version.
29 .previous 29 .previous
30 #endif /* __ELF__ and __linux__ */ 30 #endif /* __ELF__ and __linux__ */
31 31
32 #ifdef __ARM_EABI__ 32 #ifdef __ARM_EABI__
33 /* Some attributes that are common to all routines in this file. */ 33 /* Some attributes that are common to all routines in this file. */
34 /* Tag_ABI_align8_needed: This code does not require 8-byte 34 /* Tag_ABI_align_needed: This code does not require 8-byte
35 alignment from the caller. */ 35 alignment from the caller. */
36 /* .eabi_attribute 24, 0 -- default setting. */ 36 /* .eabi_attribute 24, 0 -- default setting. */
37 /* Tag_ABI_align8_preserved: This code preserves 8-byte 37 /* Tag_ABI_align_preserved: This code preserves 8-byte
38 alignment in any callee. */ 38 alignment in any callee. */
39 .eabi_attribute 25, 1 39 .eabi_attribute 25, 1
40 #endif /* __ARM_EABI__ */ 40 #endif /* __ARM_EABI__ */
41 /* ------------------------------------------------------------------------ */ 41 /* ------------------------------------------------------------------------ */
42 42
108 # define __ARM_ARCH__ 7 108 # define __ARM_ARCH__ 7
109 #endif 109 #endif
110 110
111 #ifndef __ARM_ARCH__ 111 #ifndef __ARM_ARCH__
112 #error Unable to determine architecture. 112 #error Unable to determine architecture.
113 #endif
114
115 /* There are times when we might prefer Thumb1 code even if ARM code is
116 permitted, for example, the code might be smaller, or there might be
117 interworking problems with switching to ARM state if interworking is
118 disabled. */
119 #if (defined(__thumb__) \
120 && !defined(__thumb2__) \
121 && (!defined(__THUMB_INTERWORK__) \
122 || defined (__OPTIMIZE_SIZE__) \
123 || defined(__ARM_ARCH_6M__)))
124 # define __prefer_thumb__
113 #endif 125 #endif
114 126
115 /* How to return from a function call depends on the architecture variant. */ 127 /* How to return from a function call depends on the architecture variant. */
116 128
117 #if (__ARM_ARCH__ > 4) || defined(__ARM_ARCH_4T__) 129 #if (__ARM_ARCH__ > 4) || defined(__ARM_ARCH_4T__)
915 /* ------------------------------------------------------------------------ */ 927 /* ------------------------------------------------------------------------ */
916 /* Start of the Real Functions */ 928 /* Start of the Real Functions */
917 /* ------------------------------------------------------------------------ */ 929 /* ------------------------------------------------------------------------ */
918 #ifdef L_udivsi3 930 #ifdef L_udivsi3
919 931
920 #if defined(__ARM_ARCH_6M__) 932 #if defined(__prefer_thumb__)
921 933
922 FUNC_START udivsi3 934 FUNC_START udivsi3
923 FUNC_ALIAS aeabi_uidiv udivsi3 935 FUNC_ALIAS aeabi_uidiv udivsi3
924 936
925 cmp divisor, #0 937 cmp divisor, #0
972 984
973 #endif /* ARM version */ 985 #endif /* ARM version */
974 986
975 DIV_FUNC_END udivsi3 unsigned 987 DIV_FUNC_END udivsi3 unsigned
976 988
977 #if defined(__ARM_ARCH_6M__) 989 #if defined(__prefer_thumb__)
978 FUNC_START aeabi_uidivmod 990 FUNC_START aeabi_uidivmod
979 cmp r1, #0 991 cmp r1, #0
980 beq LSYM(Ldiv0) 992 beq LSYM(Ldiv0)
981 push {r0, r1, lr} 993 push {r0, r1, lr}
982 bl LSYM(udivsi3_skip_div0_test) 994 bl LSYM(udivsi3_skip_div0_test)
1040 1052
1041 #endif /* L_umodsi3 */ 1053 #endif /* L_umodsi3 */
1042 /* ------------------------------------------------------------------------ */ 1054 /* ------------------------------------------------------------------------ */
1043 #ifdef L_divsi3 1055 #ifdef L_divsi3
1044 1056
1045 #if defined(__ARM_ARCH_6M__) 1057 #if defined(__prefer_thumb__)
1046 1058
1047 FUNC_START divsi3 1059 FUNC_START divsi3
1048 FUNC_ALIAS aeabi_idiv divsi3 1060 FUNC_ALIAS aeabi_idiv divsi3
1049 1061
1050 cmp divisor, #0 1062 cmp divisor, #0
1128 1140
1129 #endif /* ARM version */ 1141 #endif /* ARM version */
1130 1142
1131 DIV_FUNC_END divsi3 signed 1143 DIV_FUNC_END divsi3 signed
1132 1144
1133 #if defined(__ARM_ARCH_6M__) 1145 #if defined(__prefer_thumb__)
1134 FUNC_START aeabi_idivmod 1146 FUNC_START aeabi_idivmod
1135 cmp r1, #0 1147 cmp r1, #0
1136 beq LSYM(Ldiv0) 1148 beq LSYM(Ldiv0)
1137 push {r0, r1, lr} 1149 push {r0, r1, lr}
1138 bl LSYM(divsi3_skip_div0_test) 1150 bl LSYM(divsi3_skip_div0_test)