gcc/config/gcn/gcn-hsa.h

   1 /* Copyright (C) 2016-2021 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.text"
  22 #define BSS_SECTION_ASM_OP  "\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
  52 extern 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 "  \
  80                   "%:last_arg(%{march=*:-mcpu=%*}) " \
  81                   "-filetype=obj"
  82 #define LINK_SPEC "--pie --export-dynamic"
  83 #define LIB_SPEC  "-lc"
  84
  85 /* Provides a _start symbol to keep the linker happy.  */
  86 #define STARTFILE_SPEC "crt0.o%s"
  87 #define ENDFILE_SPEC   ""
  88 #define STANDARD_STARTFILE_PREFIX_2 ""
  89
  90 /* The LLVM assembler rejects multiple -mcpu options, so we must drop
  91    all but the last.  */
  92 extern const char *last_arg_spec_function (int argc, const char **argv);
  93 #define EXTRA_SPEC_FUNCTIONS    \
  94     { "last_arg", last_arg_spec_function },
  95
  96 #undef LOCAL_INCLUDE_DIR
  97
  98 /* FIXME: Review debug info settings.
  99  *        In particular, EH_FRAME_THROUGH_COLLECT2 is probably the wrong
 100  *        thing but stuff fails to build without it.
 101  *        (Debug info is not a big deal until we get a debugger.)  */
 102 #define PREFERRED_DEBUGGING_TYPE   DWARF2_DEBUG
 103 #define DWARF2_DEBUGGING_INFO      1
 104 #define DWARF2_ASM_LINE_DEBUG_INFO 1
 105 #define EH_FRAME_THROUGH_COLLECT2  1
 106 #define DBX_REGISTER_NUMBER(REGNO) gcn_dwarf_register_number (REGNO)