gcc/config/pa/pa-linux.h

   1 /* Definitions for PA_RISC with ELF format
   2    Copyright 1999, 2000, 2001 Free Software Foundation, Inc.
   3
   4 This file is part of GNU CC.
   5
   6 GNU CC 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 2, or (at your option)
   9 any later version.
  10
  11 GNU CC 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 GNU CC; see the file COPYING.  If not, write to
  18 the Free Software Foundation, 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21 /* Use DWARF2 debugging info and unwind.  */
  22 #undef PREFERRED_DEBUGGING_TYPE
  23 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
  24 #define DWARF2_ASM_LINE_DEBUG_INFO 1
  25 #define DWARF2_UNWIND_INFO 1
  26
  27 #undef CPP_PREDEFINES
  28 #define CPP_PREDEFINES "-D__ELF__ -Dunix -D__hppa__ -Dlinux -Asystem=unix -Asystem=posix -Acpu=hppa -Amachine=hppa -Amachine=bigendian"
  29
  30 #undef  LIB_SPEC
  31 #define LIB_SPEC "%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}"
  32
  33 #undef ASM_SPEC
  34 #define ASM_SPEC \
  35   "%{v:-V} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*}"
  36
  37 /* Define this for shared library support because it isn't in the main
  38    linux.h file.  */
  39
  40 #undef LINK_SPEC
  41 #define LINK_SPEC "\
  42   %{shared:-shared} \
  43   %{!shared: \
  44     %{!static: \
  45       %{rdynamic:-export-dynamic} \
  46       %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}} \
  47       %{static:-static}}"
  48
  49 /* Sibcalls, stubs, and elf sections don't play well.  */
  50 #undef FUNCTION_OK_FOR_SIBCALL
  51 #define FUNCTION_OK_FOR_SIBCALL(x) 0
  52
  53 /* glibc's profiling functions don't need gcc to allocate counters.  */
  54 #define NO_PROFILE_COUNTERS 1
  55
  56 /* Put plabels into the data section so we can relocate them.  */
  57 #undef SELECT_RTX_SECTION
  58 #define SELECT_RTX_SECTION(MODE,RTX,ALIGN)      \
  59   if (flag_pic && function_label_operand (RTX, MODE))   \
  60     data_section ();                                    \
  61   else                                                  \
  62     readonly_data_section ();
  63
  64 /* A C expression whose value is RTL representing the location of the
  65    incoming return address at the beginning of any function, before the
  66    prologue.  */
  67 #define INCOMING_RETURN_ADDR_RTX  (gen_rtx_REG (word_mode, 2))
  68 #define DWARF_FRAME_RETURN_COLUMN (DWARF_FRAME_REGNUM (2))
  69
  70 /* Define the strings used for the special svr4 .type and .size directives.
  71    These strings generally do not vary from one system running svr4 to
  72    another, but if a given system (e.g. m88k running svr) needs to use
  73    different pseudo-op names for these, they may be overridden in the
  74    file which includes this one.  */
  75
  76 #undef STRING_ASM_OP
  77 #define STRING_ASM_OP   ".stringz"
  78
  79 #define TEXT_SECTION_ASM_OP "\t.text"
  80 #define DATA_SECTION_ASM_OP "\t.data"
  81 #define BSS_SECTION_ASM_OP "\t.section\t.bss"
  82
  83 /* Output at beginning of assembler file.  We override the definition
  84    from <linux.h> so that we can get the proper .LEVEL directive. */
  85 #undef ASM_FILE_START
  86 #define ASM_FILE_START(FILE) \
  87   do                                                            \
  88     {                                                           \
  89       if (write_symbols != NO_DEBUG)                            \
  90         {                                                       \
  91           output_file_directive (FILE, main_input_filename);    \
  92           fputs ("\t.version\t\"01.01\"\n", FILE);              \
  93         }                                                       \
  94       if (TARGET_64BIT)                                         \
  95         fputs("\t.LEVEL 2.0w\n", FILE);                         \
  96       else if (TARGET_PA_20)                                    \
  97         fputs("\t.LEVEL 2.0\n", FILE);                          \
  98       else if (TARGET_PA_11)                                    \
  99         fputs("\t.LEVEL 1.1\n", FILE);                          \
 100       else                                                      \
 101         fputs("\t.LEVEL 1.0\n", FILE);                          \
 102       if (profile_flag)                                         \
 103         fputs ("\t.IMPORT _mcount, CODE\n", FILE);              \
 104     }                                                           \
 105    while (0)
 106
 107 /* Output a definition */
 108 #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \
 109   do                                                            \
 110     {                                                           \
 111       fprintf ((FILE), "\t%s\t", SET_ASM_OP);                   \
 112       assemble_name (FILE, LABEL1);                             \
 113       fprintf (FILE, ",");                                      \
 114       assemble_name (FILE, LABEL2);                             \
 115       fprintf (FILE, "\n");                                     \
 116     }                                                           \
 117   while (0)
 118
 119 /* Define these to generate the Linux/ELF/SysV style of internal
 120    labels all the time - i.e. to be compatible with
 121    ASM_GENERATE_INTERNAL_LABEL in <elfos.h>.  Compare these with the
 122    ones in pa.h and note the lack of dollar signs in these.  FIXME:
 123    shouldn't we fix pa.h to use ASM_GENERATE_INTERNAL_LABEL instead? */
 124
 125 #undef ASM_OUTPUT_ADDR_VEC_ELT
 126 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
 127   if (TARGET_BIG_SWITCH)                                        \
 128     fprintf (FILE, "\tstw %%r1,-16(%%r30)\n\tldil LR'.L%d,%%r1\n\tbe RR'.L%d(%%sr4,%%r1)\n\tldw -16(%%r30),%%r1\n", VALUE, VALUE);              \
 129   else                                                          \
 130     fprintf (FILE, "\tb .L%d\n\tnop\n", VALUE)
 131
 132 #undef ASM_OUTPUT_ADDR_DIFF_ELT
 133 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
 134   if (TARGET_BIG_SWITCH)                                        \
 135     fprintf (FILE, "\tstw %%r1,-16(%%r30)\n\tldw T'.L%d(%%r19),%%r1\n\tbv %%r0(%%r1)\n\tldw -16(%%r30),%%r1\n", VALUE);                         \
 136   else                                                          \
 137     fprintf (FILE, "\tb .L%d\n\tnop\n", VALUE)
 138
 139 /* This is how to output the definition of a user-level label named NAME,
 140    such as the label on a static function or variable NAME.  */
 141
 142 #undef ASM_OUTPUT_LABEL
 143 #define ASM_OUTPUT_LABEL(FILE, NAME) \
 144   do                                                            \
 145     {                                                           \
 146       assemble_name (FILE, NAME);                               \
 147       fputs (":\n", FILE);                                      \
 148     }                                                           \
 149   while (0)
 150
 151 /* NOTE: ASM_OUTPUT_INTERNAL_LABEL() is defined for us by elfos.h, and
 152    does what we want (i.e. uses colons).  It must be compatible with
 153    ASM_GENERATE_INTERNAL_LABEL(), so do not define it here.  */
 154
 155 #undef ASM_GLOBALIZE_LABEL
 156 #define ASM_GLOBALIZE_LABEL(FILE, NAME) \
 157   (fputs (".globl ", FILE), assemble_name (FILE, NAME), fputs ("\n", FILE))
 158
 159 /* FIXME: Hacked from the <elfos.h> one so that we avoid multiple
 160    labels in a function declaration (since pa.c seems determined to do
 161    it differently)  */
 162
 163 #undef ASM_DECLARE_FUNCTION_NAME
 164 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)             \
 165   do                                                            \
 166     {                                                           \
 167       fprintf (FILE, "\t%s\t ", TYPE_ASM_OP);                   \
 168       assemble_name (FILE, NAME);                               \
 169       putc (',', FILE);                                         \
 170       fprintf (FILE, TYPE_OPERAND_FMT, "function");             \
 171       putc ('\n', FILE);                                        \
 172       ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL));            \
 173     }                                                           \
 174   while (0)
 175
 176 /* Linux always uses gas.  */
 177 #undef TARGET_GAS
 178 #define TARGET_GAS 1