1/* Copyright (C) 2016-2020 Free Software Foundation, Inc. 2 3 This file is free software; you can redistribute it and/or modify it under 4 the terms of the GNU General Public License as published by the Free 5 Software Foundation; either version 3 of the License, or (at your option) 6 any later version. 7 8 This file is distributed in the hope that it will be useful, but WITHOUT 9 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 11 for more details. 12 13 You should have received a copy of the GNU General Public License 14 along with GCC; see the file COPYING3. If not see 15 <http://www.gnu.org/licenses/>. */ 16 17#ifndef OBJECT_FORMAT_ELF 18 #error elf.h included before elfos.h 19#endif 20 21#define TEXT_SECTION_ASM_OP "\t.section\t.text" 22#define BSS_SECTION_ASM_OP "\t.section\t.bss" 23#define GLOBAL_ASM_OP "\t.globl\t" 24#define DATA_SECTION_ASM_OP "\t.data\t" 25#define SET_ASM_OP "\t.set\t" 26#define LOCAL_LABEL_PREFIX "." 27#define USER_LABEL_PREFIX "" 28#define ASM_COMMENT_START ";" 29#define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section 30 31#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ 32 asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN) 33 34#undef ASM_DECLARE_FUNCTION_NAME 35#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \ 36 gcn_hsa_declare_function_name ((FILE), (NAME), (DECL)) 37 38/* Unlike GNU as, the LLVM assembler uses log2 alignments. */ 39#undef ASM_OUTPUT_ALIGNED_COMMON 40#define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGNMENT) \ 41 (fprintf ((FILE), "%s", COMMON_ASM_OP), \ 42 assemble_name ((FILE), (NAME)), \ 43 fprintf ((FILE), "," HOST_WIDE_INT_PRINT_UNSIGNED ",%u\n", \ 44 (SIZE) > 0 ? (SIZE) : 1, exact_log2 ((ALIGNMENT) / BITS_PER_UNIT))) 45 46#define ASM_OUTPUT_LABEL(FILE,NAME) \ 47 do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0) 48 49#define ASM_OUTPUT_LABELREF(FILE, NAME) \ 50 asm_fprintf (FILE, "%U%s", default_strip_name_encoding (NAME)) 51 52extern unsigned int gcn_local_sym_hash (const char *name); 53 54#define ASM_OUTPUT_SYMBOL_REF(FILE, X) gcn_asm_output_symbol_ref (FILE, X) 55 56#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \ 57 fprintf (FILE, "\t.word .L%d-.L%d\n", VALUE, REL) 58 59#define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \ 60 fprintf (FILE, "\t.word .L%d\n", VALUE) 61 62#define ASM_OUTPUT_ALIGN(FILE,LOG) \ 63 do { if (LOG!=0) fprintf (FILE, "\t.align\t%d\n", 1<<(LOG)); } while (0) 64#define ASM_OUTPUT_ALIGN_WITH_NOP(FILE,LOG) \ 65 do { \ 66 if (LOG!=0) \ 67 fprintf (FILE, "\t.p2alignl\t%d, 0xBF800000" \ 68 " ; Fill value is 's_nop 0'\n", (LOG)); \ 69 } while (0) 70 71#define ASM_APP_ON "" 72#define ASM_APP_OFF "" 73 74/* Avoid the default in ../../gcc.c, which adds "-pthread", which is not 75 supported for gcn. */ 76#define GOMP_SELF_SPECS "" 77 78/* Use LLVM assembler and linker options. */ 79#define ASM_SPEC "-triple=amdgcn--amdhsa -mattr=-code-object-v3 " \ 80 "%:last_arg(%{march=*:-mcpu=%*}) " \ 81 "-filetype=obj" 82/* Add -mlocal-symbol-id=<source-file-basename> unless the user (or mkoffload) 83 passes the option explicitly on the command line. The option also causes 84 several dump-matching tests to fail in the testsuite, so the option is not 85 added when or tree dump/compare-debug options used in the testsuite are 86 present. 87 This has the potential for surprise, but a user can still use an explicit 88 -mlocal-symbol-id=<whatever> option manually together with -fdump-tree or 89 -fcompare-debug options. */ 90#define CC1_SPEC "%{!mlocal-symbol-id=*:%{!fdump-tree-*:" \ 91 "%{!fdump-ipa-*:%{!fcompare-debug*:-mlocal-symbol-id=%b}}}}" 92#define LINK_SPEC "--pie" 93#define LIB_SPEC "-lc" 94 95/* Provides a _start symbol to keep the linker happy. */ 96#define STARTFILE_SPEC "crt0.o%s" 97#define ENDFILE_SPEC "" 98#define STANDARD_STARTFILE_PREFIX_2 "" 99 100/* The LLVM assembler rejects multiple -mcpu options, so we must drop 101 all but the last. */ 102extern const char *last_arg_spec_function (int argc, const char **argv); 103#define EXTRA_SPEC_FUNCTIONS \ 104 { "last_arg", last_arg_spec_function }, 105 106#undef LOCAL_INCLUDE_DIR 107 108/* FIXME: Review debug info settings. 109 * In particular, EH_FRAME_THROUGH_COLLECT2 is probably the wrong 110 * thing but stuff fails to build without it. 111 * (Debug info is not a big deal until we get a debugger.) */ 112#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG 113#define DWARF2_DEBUGGING_INFO 1 114#define DWARF2_ASM_LINE_DEBUG_INFO 1 115#define EH_FRAME_THROUGH_COLLECT2 1 116