Mercurial > hg > CbC > CbC_gcc
annotate gcc/config/alpha/elf.h @ 158:494b0b89df80 default tip
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| author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Mon, 25 May 2020 18:13:55 +0900 |
| parents | 1830386684a0 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* Definitions of target machine for GNU compiler, for DEC Alpha w/ELF. |
| 145 | 2 Copyright (C) 1996-2020 Free Software Foundation, Inc. |
| 0 | 3 Contributed by Richard Henderson (rth@tamu.edu). |
| 4 | |
| 5 This file is part of GCC. | |
| 6 | |
| 7 GCC is free software; you can redistribute it and/or modify | |
| 8 it under the terms of the GNU General Public License as published by | |
| 9 the Free Software Foundation; either version 3, or (at your option) | |
| 10 any later version. | |
| 11 | |
| 12 GCC is distributed in the hope that it will be useful, | |
| 13 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 GNU General Public License for more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License | |
| 18 along with GCC; see the file COPYING3. If not see | |
| 19 <http://www.gnu.org/licenses/>. */ | |
| 20 | |
| 21 #undef CC1_SPEC | |
| 22 #define CC1_SPEC "%{G*}" | |
| 23 | |
| 24 #undef ASM_SPEC | |
| 111 | 25 #define ASM_SPEC "%{G*} %{relax:-relax} %{!gstabs*:-no-mdebug}%{gstabs*:-mdebug} %{mcpu=*:-m%*}" |
| 0 | 26 |
| 111 | 27 /* Do not output a .file directive at the beginning of the input file. */ |
| 28 | |
| 29 #undef TARGET_ASM_FILE_START_FILE_DIRECTIVE | |
| 30 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE false | |
| 0 | 31 |
| 111 | 32 /* This is how to output an assembler line |
| 33 that says to advance the location counter | |
| 34 to a multiple of 2**LOG bytes. */ | |
| 0 | 35 |
| 111 | 36 #define ASM_OUTPUT_ALIGN(FILE,LOG) \ |
| 37 if ((LOG) != 0) \ | |
| 38 fprintf (FILE, "\t.align %d\n", LOG); | |
| 0 | 39 |
| 40 /* This says how to output assembler code to declare an | |
| 41 uninitialized internal linkage data object. Under SVR4, | |
| 42 the linker seems to want the alignment of data objects | |
| 43 to depend on their types. We do exactly that here. */ | |
| 44 | |
| 45 #undef ASM_OUTPUT_ALIGNED_LOCAL | |
| 46 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \ | |
| 47 do { \ | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
48 if ((SIZE) <= (unsigned HOST_WIDE_INT) g_switch_value) \ |
| 0 | 49 switch_to_section (sbss_section); \ |
| 50 else \ | |
| 51 switch_to_section (bss_section); \ | |
| 52 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \ | |
| 53 if (!flag_inhibit_size_directive) \ | |
| 54 ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, SIZE); \ | |
| 55 ASM_OUTPUT_ALIGN ((FILE), exact_log2((ALIGN) / BITS_PER_UNIT)); \ | |
| 56 ASM_OUTPUT_LABEL(FILE, NAME); \ | |
| 57 ASM_OUTPUT_SKIP((FILE), (SIZE) ? (SIZE) : 1); \ | |
| 58 } while (0) | |
| 59 | |
| 60 /* This says how to output assembler code to declare an | |
| 61 uninitialized external linkage data object. */ | |
| 62 | |
| 63 #undef ASM_OUTPUT_ALIGNED_BSS | |
| 64 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ | |
| 65 do { \ | |
| 66 ASM_OUTPUT_ALIGNED_LOCAL (FILE, NAME, SIZE, ALIGN); \ | |
| 67 } while (0) | |
| 68 | |
| 69 #undef BSS_SECTION_ASM_OP | |
| 70 #define BSS_SECTION_ASM_OP "\t.section\t.bss" | |
| 71 #undef SBSS_SECTION_ASM_OP | |
| 72 #define SBSS_SECTION_ASM_OP "\t.section\t.sbss,\"aw\"" | |
| 73 #undef SDATA_SECTION_ASM_OP | |
| 74 #define SDATA_SECTION_ASM_OP "\t.section\t.sdata,\"aw\"" | |
| 75 | |
| 76 /* This is how we tell the assembler that two symbols have the same value. */ | |
| 77 | |
| 78 #undef ASM_OUTPUT_DEF | |
| 79 #define ASM_OUTPUT_DEF(FILE, ALIAS, NAME) \ | |
| 80 do { \ | |
| 81 assemble_name(FILE, ALIAS); \ | |
| 82 fputs(" = ", FILE); \ | |
| 83 assemble_name(FILE, NAME); \ | |
| 84 fputc('\n', FILE); \ | |
| 85 } while (0) | |
| 86 | |
| 87 #undef ASM_OUTPUT_DEF_FROM_DECLS | |
| 88 #define ASM_OUTPUT_DEF_FROM_DECLS(FILE, DECL, TARGET) \ | |
| 89 do { \ | |
| 90 const char *alias = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \ | |
| 91 const char *name = IDENTIFIER_POINTER (TARGET); \ | |
| 92 if (TREE_CODE (DECL) == FUNCTION_DECL) \ | |
| 93 { \ | |
| 94 fputc ('$', FILE); \ | |
| 95 assemble_name (FILE, alias); \ | |
| 96 fputs ("..ng = $", FILE); \ | |
| 97 assemble_name (FILE, name); \ | |
| 98 fputs ("..ng\n", FILE); \ | |
| 99 } \ | |
| 111 | 100 ASM_OUTPUT_DEF (FILE, alias, name); \ |
| 0 | 101 } while (0) |
| 102 | |
| 111 | 103 /* This variable should be set to 'true' if the target ABI requires |
| 104 unwinding tables even when exceptions are not used. */ | |
| 105 #define TARGET_UNWIND_TABLES_DEFAULT true | |
| 106 | |
| 0 | 107 /* Select a format to encode pointers in exception handling data. CODE |
| 108 is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is | |
| 109 true if the symbol may be affected by dynamic relocations. | |
| 110 | |
| 111 Since application size is already constrained to <2GB by the form of | |
| 112 the ldgp relocation, we can use a 32-bit pc-relative relocation to | |
| 113 static data. Dynamic data is accessed indirectly to allow for read | |
| 114 only EH sections. */ | |
| 115 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \ | |
| 116 (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4) | |
| 117 | |
| 118 /* If defined, a C statement to be executed just prior to the output of | |
| 119 assembler code for INSN. */ | |
| 120 #define FINAL_PRESCAN_INSN(INSN, OPVEC, NOPERANDS) \ | |
| 121 (alpha_this_literal_sequence_number = 0, \ | |
| 122 alpha_this_gpdisp_sequence_number = 0) | |
| 123 extern int alpha_this_literal_sequence_number; | |
| 124 extern int alpha_this_gpdisp_sequence_number; | |
| 125 | |
| 126 /* Since the bits of the _init and _fini function is spread across | |
| 127 many object files, each potentially with its own GP, we must assume | |
| 128 we need to load our GP. Further, the .init/.fini section can | |
| 129 easily be more than 4MB away from the function to call so we can't | |
| 130 use bsr. */ | |
| 131 #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \ | |
| 132 asm (SECTION_OP "\n" \ | |
| 133 " br $29,1f\n" \ | |
| 134 "1: ldgp $29,0($29)\n" \ | |
| 135 " unop\n" \ | |
| 136 " jsr $26," USER_LABEL_PREFIX #FUNC "\n" \ | |
| 137 " .align 3\n" \ | |
| 138 " .previous"); | |
| 139 | |
| 140 /* If we have the capability create headers for efficient EH lookup. | |
| 141 As of Jan 2002, only glibc 2.2.4 can actually make use of this, but | |
| 142 I imagine that other systems will catch up. In the meantime, it | |
| 143 doesn't harm to make sure that the data exists to be used later. */ | |
| 144 #if defined(HAVE_LD_EH_FRAME_HDR) | |
| 111 | 145 #define LINK_EH_SPEC "%{!static|static-pie:--eh-frame-hdr} " |
| 0 | 146 #endif |