Mercurial > hg > CbC > CbC_gcc
annotate gcc/config/m68k/m68kelf.h @ 67:f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
| author | nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Tue, 22 Mar 2011 17:18:12 +0900 |
| parents | a06113de4d67 |
| children | 04ced10e8804 |
| rev | line source |
|---|---|
| 0 | 1 /* m68kelf support, derived from m68kv4.h */ |
| 2 | |
| 3 /* Target definitions for GNU compiler for mc680x0 running System V.4 | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
4 Copyright (C) 1991, 1993, 2000, 2002, 2003, 2004, 2007, 2010 |
| 0 | 5 Free Software Foundation, Inc. |
| 6 | |
| 7 Written by Ron Guilmette (rfg@netcom.com) and Fred Fish (fnf@cygnus.com). | |
| 8 | |
| 9 This file is part of GCC. | |
| 10 | |
| 11 GCC is free software; you can redistribute it and/or modify | |
| 12 it under the terms of the GNU General Public License as published by | |
| 13 the Free Software Foundation; either version 3, or (at your option) | |
| 14 any later version. | |
| 15 | |
| 16 GCC is distributed in the hope that it will be useful, | |
| 17 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 19 GNU General Public License for more details. | |
| 20 | |
| 21 You should have received a copy of the GNU General Public License | |
| 22 along with GCC; see the file COPYING3. If not see | |
| 23 <http://www.gnu.org/licenses/>. */ | |
| 24 | |
| 25 | |
| 26 #ifndef SWBEG_ASM_OP | |
| 27 #define SWBEG_ASM_OP "\t.swbeg\t" | |
| 28 #endif | |
| 29 | |
| 30 /* Here are three prefixes that are used by asm_fprintf to | |
| 31 facilitate customization for alternate assembler syntaxes. | |
| 32 Machines with no likelihood of an alternate syntax need not | |
| 33 define these and need not use asm_fprintf. */ | |
| 34 | |
| 35 /* The prefix for register names. Note that REGISTER_NAMES | |
| 36 is supposed to include this prefix. Also note that this is NOT an | |
| 37 fprintf format string, it is a literal string */ | |
| 38 | |
| 39 #undef REGISTER_PREFIX | |
| 40 #define REGISTER_PREFIX "%" | |
| 41 | |
| 42 /* The prefix for local (compiler generated) labels. | |
| 43 These labels will not appear in the symbol table. */ | |
| 44 | |
| 45 #undef LOCAL_LABEL_PREFIX | |
| 46 #define LOCAL_LABEL_PREFIX "." | |
| 47 | |
| 48 /* The prefix to add to user-visible assembler symbols. */ | |
| 49 | |
| 50 #undef USER_LABEL_PREFIX | |
| 51 #define USER_LABEL_PREFIX "" | |
| 52 | |
| 53 /* config/m68k.md has an explicit reference to the program counter, | |
| 54 prefix this by the register prefix. */ | |
| 55 | |
| 56 #define ASM_RETURN_CASE_JUMP \ | |
| 57 do { \ | |
| 58 if (TARGET_COLDFIRE) \ | |
| 59 { \ | |
| 60 if (ADDRESS_REG_P (operands[0])) \ | |
| 61 return "jmp %%pc@(2,%0:l)"; \ | |
| 62 else \ | |
| 63 return "ext%.l %0\n\tjmp %%pc@(2,%0:l)"; \ | |
| 64 } \ | |
| 65 else \ | |
| 66 return "jmp %%pc@(2,%0:w)"; \ | |
| 67 } while (0) | |
| 68 | |
| 69 /* This is how to output an assembler line that says to advance the | |
| 70 location counter to a multiple of 2**LOG bytes. */ | |
| 71 | |
| 72 #undef ASM_OUTPUT_ALIGN | |
| 73 #define ASM_OUTPUT_ALIGN(FILE,LOG) \ | |
| 74 do { \ | |
| 75 if ((LOG) > 0) \ | |
| 76 fprintf ((FILE), "%s%u\n", ALIGN_ASM_OP, 1 << (LOG)); \ | |
| 77 } while (0) | |
| 78 | |
| 79 /* Register in which address to store a structure value is passed to a | |
| 80 function. The default in m68k.h is a1. For m68k/SVR4 it is a0. */ | |
| 81 | |
| 82 #undef M68K_STRUCT_VALUE_REGNUM | |
| 83 #define M68K_STRUCT_VALUE_REGNUM A0_REG | |
| 84 | |
| 85 /* The static chain regnum defaults to a0, but we use that for | |
| 86 structure return, so have to use a1 for the static chain. */ | |
| 87 | |
| 88 #undef STATIC_CHAIN_REGNUM | |
| 89 #define STATIC_CHAIN_REGNUM A1_REG | |
| 90 #undef M68K_STATIC_CHAIN_REG_NAME | |
| 91 #define M68K_STATIC_CHAIN_REG_NAME REGISTER_PREFIX "a1" | |
| 92 | |
| 93 #define ASM_COMMENT_START "|" | |
| 94 | |
| 95 /* Define how the m68k registers should be numbered for Dwarf output. | |
| 96 The numbering provided here should be compatible with the native | |
| 97 SVR4 SDB debugger in the m68k/SVR4 reference port, where d0-d7 | |
| 98 are 0-7, a0-a8 are 8-15, and fp0-fp7 are 16-23. */ | |
| 99 | |
| 100 #undef DBX_REGISTER_NUMBER | |
| 101 #define DBX_REGISTER_NUMBER(REGNO) (REGNO) | |
| 102 | |
| 103 #if 0 | |
| 104 /* SVR4 m68k assembler is bitching on the `comm i,1,1' which askes for | |
| 105 1 byte alignment. Don't generate alignment for COMMON seems to be | |
| 106 safer until we the assembler is fixed. */ | |
| 107 #undef ASM_OUTPUT_ALIGNED_COMMON | |
| 108 /* Same problem with this one. */ | |
| 109 #undef ASM_OUTPUT_ALIGNED_LOCAL | |
| 110 #endif | |
| 111 | |
| 112 #undef ASM_OUTPUT_COMMON | |
| 113 #undef ASM_OUTPUT_LOCAL | |
| 114 #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \ | |
| 115 ( fputs (".comm ", (FILE)), \ | |
| 116 assemble_name ((FILE), (NAME)), \ | |
| 117 fprintf ((FILE), ",%u\n", (int)(SIZE))) | |
| 118 | |
| 119 #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \ | |
| 120 ( fputs (".lcomm ", (FILE)), \ | |
| 121 assemble_name ((FILE), (NAME)), \ | |
| 122 fprintf ((FILE), ",%u\n", (int)(SIZE))) | |
| 123 | |
| 124 /* Currently, JUMP_TABLES_IN_TEXT_SECTION must be defined in order to | |
| 125 keep switch tables in the text section. */ | |
| 126 | |
| 127 #define JUMP_TABLES_IN_TEXT_SECTION 1 | |
| 128 | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
129 /* In m68k svr4, using swbeg is the standard way to do switch |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
130 table. */ |
| 0 | 131 #undef ASM_OUTPUT_BEFORE_CASE_LABEL |
| 132 #define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE,PREFIX,NUM,TABLE) \ | |
| 133 fprintf ((FILE), "%s&%d\n", SWBEG_ASM_OP, XVECLEN (PATTERN (TABLE), 1)); | |
| 134 /* end of stuff from m68kv4.h */ | |
| 135 | |
| 136 #undef ENDFILE_SPEC | |
| 137 #define ENDFILE_SPEC "crtend.o%s" | |
| 138 | |
| 139 #undef STARTFILE_SPEC | |
| 140 #define STARTFILE_SPEC "crtbegin.o%s" | |
| 141 | |
| 142 /* If defined, a C expression whose value is a string containing the | |
| 143 assembler operation to identify the following data as | |
| 144 uninitialized global data. If not defined, and neither | |
| 145 `ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined, | |
| 146 uninitialized global data will be output in the data section if | |
| 147 `-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be | |
| 148 used. */ | |
| 149 #ifndef BSS_SECTION_ASM_OP | |
| 150 #define BSS_SECTION_ASM_OP "\t.section\t.bss" | |
| 151 #endif | |
| 152 | |
| 153 /* Like `ASM_OUTPUT_BSS' except takes the required alignment as a | |
| 154 separate, explicit argument. If you define this macro, it is used | |
| 155 in place of `ASM_OUTPUT_BSS', and gives you more flexibility in | |
| 156 handling the required alignment of the variable. The alignment is | |
| 157 specified as the number of bits. | |
| 158 | |
| 159 Try to use function `asm_output_aligned_bss' defined in file | |
| 160 `varasm.c' when defining this macro. */ | |
| 161 #ifndef ASM_OUTPUT_ALIGNED_BSS | |
| 162 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ | |
| 163 asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN) | |
| 164 #endif |