1  /* Definitions for ELF assembler support.
       2     Copyright (C) 1999-2023 Free Software Foundation, Inc.
       3  
       4  This file is part of GCC.
       5  
       6  GCC is free software; you can redistribute it and/or modify
       7  it under the terms of the GNU General Public License as published by
       8  the Free Software Foundation; either version 3, or (at your option)
       9  any later version.
      10  
      11  GCC is distributed in the hope that it will be useful,
      12  but WITHOUT ANY WARRANTY; without even the implied warranty of
      13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      14  GNU General Public License for more details.
      15  
      16  You should have received a copy of the GNU General Public License
      17  along with GCC; see the file COPYING3.  If not see
      18  <http://www.gnu.org/licenses/>.  */
      19  
      20  /* So we can conditionalize small amounts of code in pa.cc or pa.md.  */
      21  #define OBJ_ELF
      22  
      23  #define ENDFILE_SPEC "crtend.o%s"
      24  
      25  #define STARTFILE_SPEC "%{!shared: \
      26  			 %{!symbolic: \
      27  			  %{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}}}\
      28  			crtbegin.o%s"
      29  
      30  #define TEXT_SECTION_ASM_OP "\t.text"
      31  #define DATA_SECTION_ASM_OP "\t.data"
      32  #define BSS_SECTION_ASM_OP "\t.section\t.bss"
      33  
      34  #define TARGET_ASM_FILE_START pa_elf_file_start
      35  
      36  #undef ASM_DECLARE_FUNCTION_NAME
      37  #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
      38  do {  \
      39    if (TREE_PUBLIC (DECL)) \
      40      { \
      41        fputs ("\t.EXPORT ", FILE); \
      42        assemble_name (FILE, NAME); \
      43        fputs (",ENTRY\n", FILE); \
      44      } \
      45     } while (0)
      46  
      47  /* This is how to output a command to make the user-level label
      48     named NAME defined for reference from other files.  We use
      49     assemble_name_raw instead of assemble_name since a symbol in
      50     a .IMPORT directive that isn't otherwise referenced is not
      51     placed in the symbol table of the assembled object.
      52  
      53     Failure to import a function reference can cause the HP linker
      54     to segmentation fault!
      55  
      56     Note that the SOM based tools need the symbol imported as a
      57     CODE symbol, while the ELF based tools require the symbol to
      58     be imported as an ENTRY symbol.  */
      59  
      60  #define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME) \
      61    pa_hpux_asm_output_external ((FILE), (DECL), (NAME))
      62  #define ASM_OUTPUT_EXTERNAL_REAL(FILE, DECL, NAME) \
      63    do { fputs ("\t.IMPORT ", FILE);					\
      64         assemble_name_raw (FILE, NAME);					\
      65         if (FUNCTION_NAME_P (NAME))     					\
      66  	 fputs (",ENTRY\n", FILE);					\
      67         else								\
      68  	 fputs (",DATA\n", FILE);					\
      69       } while (0)
      70  
      71  /* The bogus HP assembler requires ALL external references to be
      72     "imported", even library calls. They look a bit different, so
      73     here's this macro.
      74  
      75     Also note not all libcall names are passed to
      76     targetm.encode_section_info (__main for example).  To make sure all
      77     libcall names have section info recorded in them, we do it here.  */
      78  
      79  #undef ASM_OUTPUT_EXTERNAL_LIBCALL
      80  #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, RTL) \
      81    do { fputs ("\t.IMPORT ", FILE);					\
      82         if (!function_label_operand (RTL, VOIDmode))			\
      83  	 pa_encode_label (RTL);						\
      84         assemble_name (FILE, XSTR ((RTL), 0));		       		\
      85         fputs (",ENTRY\n", FILE);					\
      86       } while (0)
      87  
      88  /* Biggest alignment supported by the object file format of this
      89     machine.  Use this macro to limit the alignment which can be
      90     specified using the `__attribute__ ((aligned (N)))' construct.  If
      91     not defined, the default value is `BIGGEST_ALIGNMENT'.  */
      92  #define MAX_OFILE_ALIGNMENT (32768 * 8)