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gcc.gnu.org Git - gcc.git/blob - 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.
5 This file is part of GNU CC.
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)
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.
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. */
23 /* Names to predefine in the preprocessor for this target machine. */
26 #define CPP_PREDEFINES "-Dsparc -DUnicomPBD -Dunix -D__GCC_NEW_VARARGS__ -Asystem=unix -Acpu=sparc -Amachine=sparc"
28 /* We want DBX format for use with gdb under COFF. */
30 #define DBX_DEBUGGING_INFO 1
32 /* Generate calls to memcpy, memcmp and memset. */
34 #define TARGET_MEM_FUNCTIONS
36 /* we use /lib/libp/lib* when profiling */
39 #define LIB_SPEC "%{p:-L/usr/lib/libp} %{pg:-L/usr/lib/libp} -lc"
42 /* Use crt1.o as a startup file and crtn.o as a closing file. */
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__.
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
56 #define STARTFILE_SPEC \
57 "%{!r: gcc.ifile%s} %{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}} \
60 #define ENDFILE_SPEC "crtn.o%s"
62 /* LINK_SPEC is needed only for SunOS 4. */
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
70 #define CTOR_LISTS_DEFINED_EXTERNALLY
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. */
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] (); }
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).
89 .text BIND(0x41000200) BLOCK (0x200) :
90 { *(.init) *(.text) vfork = fork; *(.fini) }
92 GROUP BIND( NEXT(0x200000) + ADDR(.text) + SIZEOF(.text)):
93 { .data : { __CTOR_LIST__ = . ; . += 4; *(.ctor) . += 4 ;
94 __DTOR_LIST__ = . ; . += 4; *(.dtor) . += 4 ; }
100 /* The prefix to add to user-visible assembler symbols. */
102 #undef USER_LABEL_PREFIX
103 #define USER_LABEL_PREFIX ""
107 * Internal labels are prefixed with a period.
110 #undef LOCAL_LABEL_PREFIX
111 #define LOCAL_LABEL_PREFIX "."
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'. */
118 #undef ASM_GENERATE_INTERNAL_LABEL
120 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
121 sprintf (LABEL, "*.%s%ld", PREFIX, (long)(NUM))
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. */
127 #undef ASM_OUTPUT_INTERNAL_LABEL
128 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
129 fprintf (FILE, ".%s%d:\n", PREFIX, NUM)
131 /* This is how to output an element of a case-vector that is relative. */
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)
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.) */
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)
145 /* This is needed for SunOS 4.0, and should not hurt for 3.2
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); \
154 #define ASM_INT_OP "\t.long "
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