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 GNU CC. 6 7 GNU CC 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 GNU CC 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 GNU CC; 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 23 /* Names to predefine in the preprocessor for this target machine. */ 24 25 #undef CPP_PREDEFINES 26 #define CPP_PREDEFINES "-Dsparc -DUnicomPBD -Dunix -D__GCC_NEW_VARARGS__ -Asystem=unix -Acpu=sparc -Amachine=sparc" 27 28 /* We want DBX format for use with gdb under COFF. */ 29 30 #define DBX_DEBUGGING_INFO 1 31 32 /* Generate calls to memcpy, memcmp and memset. */ 33 34 #define TARGET_MEM_FUNCTIONS 35 36 /* we use /lib/libp/lib* when profiling */ 37 38 #undef LIB_SPEC 39 #define LIB_SPEC "%{p:-L/usr/lib/libp} %{pg:-L/usr/lib/libp} -lc" 40 41 42 /* Use crt1.o as a startup file and crtn.o as a closing file. */ 43 /* 44 * The loader directive file gcc.ifile defines how to merge the constructor 45 * sections into the data section. Also, since gas only puts out those 46 * sections in response to N_SETT stabs, and does not (yet) have a 47 * ".sections" directive, gcc.ifile also defines the list symbols 48 * __DTOR_LIST__ and __CTOR_LIST__. 49 * 50 * Finally, we must explicitly specify the file from libgcc.a that defines 51 * exit(), otherwise if the user specifies (for example) "-lc_s" on the 52 * command line, the wrong exit() will be used and global destructors will 53 * not get called . 54 */ 55 56 #define STARTFILE_SPEC \ 57 "%{!r: gcc.ifile%s} %{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}} \ 58 %{!r:_exit.o%s}" 59 60 #define ENDFILE_SPEC "crtn.o%s" 61 62 /* LINK_SPEC is needed only for SunOS 4. */ 63 64 #undef LINK_SPEC 65 66 /* Although the gas we use can create .ctor and .dtor sections from N_SETT 67 stabs, it does not support section directives, so we need to have the loader 68 define the lists. 69 */ 70 #define CTOR_LISTS_DEFINED_EXTERNALLY 71 72 /* similar to default, but allows for the table defined by ld with gcc.ifile. 73 nptrs is always 0. So we need to instead check that __DTOR_LIST__[1] != 0. 74 The old check is left in so that the same macro can be used if and when 75 a future version of gas does support section directives. */ 76 77 #define DO_GLOBAL_DTORS_BODY {int nptrs = *(int *)__DTOR_LIST__; int i; \ 78 if (nptrs == -1 || (__DTOR_LIST__[0] == 0 && __DTOR_LIST__[1] != 0)) \ 79 for (nptrs = 0; __DTOR_LIST__[nptrs + 1] != 0; nptrs++); \ 80 for (i = nptrs; i >= 1; i--) \ 81 __DTOR_LIST__[i] (); } 82 83 /* 84 * Here is an example gcc.ifile. I've tested it on PBD sparc 85 * systems. The NEXT(0x200000) works on just about all 386 and m68k systems, 86 * but can be reduced to any power of 2 that is >= NBPS (0x40000 on a pbd). 87 88 SECTIONS { 89 .text BIND(0x41000200) BLOCK (0x200) : 90 { *(.init) *(.text) vfork = fork; *(.fini) } 91 92 GROUP BIND( NEXT(0x200000) + ADDR(.text) + SIZEOF(.text)): 93 { .data : { __CTOR_LIST__ = . ; . += 4; *(.ctor) . += 4 ; 94 __DTOR_LIST__ = . ; . += 4; *(.dtor) . += 4 ; } 95 .bss : { } 96 } 97 } 98 */ 99 100 /* The prefix to add to user-visible assembler symbols. */ 101 102 #undef USER_LABEL_PREFIX 103 #define USER_LABEL_PREFIX "" 104 105 /* fixes: */ 106 /* 107 * Internal labels are prefixed with a period. 108 */ 109 110 #undef LOCAL_LABEL_PREFIX 111 #define LOCAL_LABEL_PREFIX "." 112 113 /* This is how to store into the string LABEL 114 the symbol_ref name of an internal numbered label where 115 PREFIX is the class of label and NUM is the number within the class. 116 This is suitable for output with `assemble_name'. */ 117 118 #undef ASM_GENERATE_INTERNAL_LABEL 119 120 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \ 121 sprintf (LABEL, "*.%s%ld", PREFIX, (long)(NUM)) 122 123 124 /* This is how to output an internal numbered label where 125 PREFIX is the class of label and NUM is the number within the class. */ 126 127 #undef ASM_OUTPUT_INTERNAL_LABEL 128 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \ 129 fprintf (FILE, ".%s%d:\n", PREFIX, NUM) 130 131 /* This is how to output an element of a case-vector that is relative. */ 132 133 #undef ASM_OUTPUT_ADDR_DIFF_ELT 134 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \ 135 fprintf (FILE, "\t.word .L%d-.L%d\n", VALUE, REL) 136 137 /* This is how to output an element of a case-vector that is absolute. 138 (The 68000 does not use such vectors, 139 but we must define this macro anyway.) */ 140 141 #undef ASM_OUTPUT_ADDR_VEC_ELT 142 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \ 143 fprintf (FILE, "\t.word .L%d\n", VALUE) 144 145 /* This is needed for SunOS 4.0, and should not hurt for 3.2 146 versions either. */ 147 #undef ASM_OUTPUT_SOURCE_LINE 148 #define ASM_OUTPUT_SOURCE_LINE(file, line) \ 149 { static int sym_lineno = 1; \ 150 fprintf (file, ".stabn 68,0,%d,.LM%d\n.LM%d:\n", \ 151 line, sym_lineno, sym_lineno); \ 152 sym_lineno += 1; } 153 154 #define ASM_INT_OP "\t.long " 155