gcc/config/sparc/pbd.h

   1 /* Definitions of target machine for GNU compiler, Citicorp/TTI Unicom PBD
   2    version (using GAS and COFF (encapsulated is unacceptable) )
   3    Copyright (C) 1990, 1996, 2000 Free Software Foundation, Inc.
   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 2, 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 COPYING.  If not, write to
  19 the Free Software Foundation, 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.  */
  21
  22 /* Target OS builtins.  */
  23 #define TARGET_OS_CPP_BUILTINS()                \
  24   do                                            \
  25     {                                           \
  26         builtin_define_std ("unix");            \
  27         builtin_define_std ("UnicomPBD");       \
  28         builtin_assert ("system=unix");         \
  29     }                                           \
  30   while (0)
  31
  32 /* We want DBX format for use with gdb under COFF.  */
  33
  34 #define DBX_DEBUGGING_INFO 1
  35
  36 /* Generate calls to memcpy, memcmp and memset.  */
  37
  38 #define TARGET_MEM_FUNCTIONS
  39
  40 /* we use /lib/libp/lib*  when profiling */
  41
  42 #undef LIB_SPEC
  43 #define LIB_SPEC "%{p:-L/usr/lib/libp} %{pg:-L/usr/lib/libp} -lc"
  44
  45
  46 /* Use crt1.o as a startup file and crtn.o as a closing file.  */
  47 /*
  48  * The loader directive file gcc.ifile defines how to merge the constructor
  49  * sections into the data section.  Also, since gas only puts out those
  50  * sections in response to N_SETT stabs, and does not (yet) have a
  51  * ".sections" directive, gcc.ifile also defines the list symbols
  52  * __DTOR_LIST__ and __CTOR_LIST__.
  53  *
  54  * Finally, we must explicitly specify the file from libgcc.a that defines
  55  * exit(), otherwise if the user specifies (for example) "-lc_s" on the
  56  * command line, the wrong exit() will be used and global destructors will
  57  * not get called .
  58  */
  59
  60 #define STARTFILE_SPEC \
  61 "%{!r: gcc.ifile%s} %{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}} \
  62 %{!r:_exit.o%s}"
  63
  64 #define ENDFILE_SPEC "crtn.o%s"
  65
  66 /* LINK_SPEC is needed only for SunOS 4.  */
  67
  68 #undef LINK_SPEC
  69
  70 /* Although the gas we use can create .ctor and .dtor sections from N_SETT
  71    stabs, it does not support section directives, so we need to have the loader
  72    define the lists.
  73    */
  74 #define CTOR_LISTS_DEFINED_EXTERNALLY
  75
  76 /* similar to default, but allows for the table defined by ld with gcc.ifile.
  77    nptrs is always 0.  So we need to instead check that __DTOR_LIST__[1] != 0.
  78    The old check is left in so that the same macro can be used if and when
  79    a future version of gas does support section directives.  */
  80
  81 #define DO_GLOBAL_DTORS_BODY {int nptrs = *(int *)__DTOR_LIST__; int i; \
  82   if (nptrs == -1 || (__DTOR_LIST__[0] == 0 && __DTOR_LIST__[1] != 0))  \
  83     for (nptrs = 0; __DTOR_LIST__[nptrs + 1] != 0; nptrs++);            \
  84   for (i = nptrs; i >= 1; i--)                                          \
  85     __DTOR_LIST__[i] (); }
  86
  87 /*
  88  * Here is an example gcc.ifile.  I've tested it on PBD sparc
  89  * systems. The NEXT(0x200000) works on just about all 386 and m68k systems,
  90  * but can be reduced to any power of 2 that is >= NBPS (0x40000 on a pbd).
  91
  92    SECTIONS {
  93        .text BIND(0x41000200) BLOCK (0x200) :
  94                 { *(.init) *(.text) vfork = fork; *(.fini) }
  95
  96         GROUP BIND( NEXT(0x200000) + ADDR(.text) + SIZEOF(.text)):
  97         {      .data : { __CTOR_LIST__ = . ; . += 4; *(.ctor) . += 4 ;
  98                          __DTOR_LIST__ = . ; . += 4; *(.dtor) . += 4 ; }
  99                .bss : { }
 100        }
 101   }
 102  */
 103
 104 /* The prefix to add to user-visible assembler symbols.  */
 105
 106 #undef USER_LABEL_PREFIX
 107 #define USER_LABEL_PREFIX ""
 108
 109 /* fixes: */
 110 /*
 111  *  Internal labels are prefixed with a period.
 112  */
 113
 114 #undef  LOCAL_LABEL_PREFIX
 115 #define LOCAL_LABEL_PREFIX  "."
 116
 117 /* This is how to store into the string LABEL
 118    the symbol_ref name of an internal numbered label where
 119    PREFIX is the class of label and NUM is the number within the class.
 120    This is suitable for output with `assemble_name'.  */
 121
 122 #undef ASM_GENERATE_INTERNAL_LABEL
 123 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)                   \
 124         sprintf (LABEL, "*.%s%ld", PREFIX, (long)(NUM))
 125
 126 /* This is how to output an element of a case-vector that is relative.  */
 127
 128 #undef  ASM_OUTPUT_ADDR_DIFF_ELT
 129 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL)  \
 130   fprintf (FILE, "\t.word .L%d-.L%d\n", VALUE, REL)
 131
 132 /* This is how to output an element of a case-vector that is absolute.
 133    (The 68000 does not use such vectors,
 134    but we must define this macro anyway.)  */
 135
 136 #undef ASM_OUTPUT_ADDR_VEC_ELT
 137 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE)  \
 138   fprintf (FILE, "\t.word .L%d\n", VALUE)
 139
 140 /* This is needed for SunOS 4.0, and should not hurt for 3.2
 141    versions either.  */
 142 #undef ASM_OUTPUT_SOURCE_LINE
 143 #define ASM_OUTPUT_SOURCE_LINE(file, line, counter)     \
 144   fprintf (file, ".stabn 68,0,%d,.LM%d\n.LM%d:\n",      \
 145            line, counter, counter)
 146
 147 #define ASM_INT_OP "\t.long "