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gcc.gnu.org Git - gcc.git/blob - gcc/config/sparc/pbd.h
1 /* Definitions of target machine for GNU compiler.
3 Citicorp/TTI Unicom PBD version
4 (using GAS and COFF (encapsulated is unacceptable) )
6 Copyright (C) 1990 Free Software Foundation, Inc.
8 This file is part of GNU CC.
10 GNU CC is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2, or (at your option)
15 GNU CC is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with GNU CC; see the file COPYING. If not, write to
22 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
26 /* Names to predefine in the preprocessor for this target machine. */
29 #define CPP_PREDEFINES "-Dsparc -DUnicomPBD -Dunix"
31 /* We want DBX format for use with gdb under COFF. */
33 #define DBX_DEBUGGING_INFO
35 /* Generate calls to memcpy, memcmp and memset. */
37 #define TARGET_MEM_FUNCTIONS
39 /* we use /lib/libp/lib* when profiling */
42 #define LIB_SPEC "%{p:-L/usr/lib/libp} %{pg:-L/usr/lib/libp} -lc"
45 /* Use crt1.o as a startup file and crtn.o as a closing file. */
47 * The loader directive file gcc.ifile defines how to merge the constructor
48 * sections into the data section. Also, since gas only puts out those
49 * sections in response to N_SETT stabs, and does not (yet) have a
50 * ".sections" directive, gcc.ifile also defines the list symbols
51 * __DTOR_LIST__ and __CTOR_LIST__.
53 * Finally, we must explicitly specify the file from libgcc.a that defines
54 * exit(), otherwise if the user specifies (for example) "-lc_s" on the
55 * command line, the wrong exit() will be used and global destructors will
59 #define STARTFILE_SPEC \
60 "%{!r: gcc.ifile%s} %{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}} \
63 #define ENDFILE_SPEC "crtn.o%s"
65 /* cpp has to support a #sccs directive for the /usr/include files */
67 #define SCCS_DIRECTIVE
69 /* LINK_SPEC is needed only for SunOS 4. */
73 /* Although the gas we use can create .ctor and .dtor sections from N_SETT
74 stabs, it does not support section directives, so we need to have the loader
77 #define CTOR_LISTS_DEFINED_EXTERNALLY
79 /* similar to default, but allows for the table defined by ld with gcc.ifile.
80 nptrs is always 0. So we need to instead check that __DTOR_LIST__[1] != 0.
81 The old check is left in so that the same macro can be used if and when
82 a future version of gas does support section directives. */
84 #define DO_GLOBAL_DTORS_BODY {int nptrs = *(int *)__DTOR_LIST__; int i; \
85 if (nptrs == -1 || (__DTOR_LIST__[0] == 0 && __DTOR_LIST__[1] != 0)) \
86 for (nptrs = 0; __DTOR_LIST__[nptrs + 1] != 0; nptrs++); \
87 for (i = nptrs; i >= 1; i--) \
88 __DTOR_LIST__[i] (); }
91 * Here is an example gcc.ifile. I've tested it on PBD sparc
92 * systems. The NEXT(0x200000) works on just about all 386 and m68k systems,
93 * but can be reduced to any power of 2 that is >= NBPS (0x40000 on a pbd).
96 .text BIND(0x41000200) BLOCK (0x200) :
97 { *(.init) *(.text) vfork = fork; *(.fini) }
99 GROUP BIND( NEXT(0x200000) + ADDR(.text) + SIZEOF(.text)):
100 { .data : { __CTOR_LIST__ = . ; . += 4; *(.ctor) . += 4 ;
101 __DTOR_LIST__ = . ; . += 4; *(.dtor) . += 4 ; }
112 #undef ASM_OUTPUT_LABELREF
113 #define ASM_OUTPUT_LABELREF(FILE,NAME) \
114 fprintf (FILE, "%s", NAME)
118 * Internal labels are prefixed with a period.
121 /* This is how to store into the string LABEL
122 the symbol_ref name of an internal numbered label where
123 PREFIX is the class of label and NUM is the number within the class.
124 This is suitable for output with `assemble_name'. */
126 #undef ASM_GENERATE_INTERNAL_LABEL
128 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
129 sprintf (LABEL, "*.%s%d", PREFIX, NUM)
132 /* This is how to output an internal numbered label where
133 PREFIX is the class of label and NUM is the number within the class. */
135 #undef ASM_OUTPUT_INTERNAL_LABEL
136 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
137 fprintf (FILE, ".%s%d:\n", PREFIX, NUM)
139 /* This is how to output an element of a case-vector that is relative. */
141 #undef ASM_OUTPUT_ADDR_DIFF_ELT
142 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL) \
143 fprintf (FILE, "\t.word .L%d-.L%d\n", VALUE, REL)
145 /* This is how to output an element of a case-vector that is absolute.
146 (The 68000 does not use such vectors,
147 but we must define this macro anyway.) */
149 #undef ASM_OUTPUT_ADDR_VEC_ELT
150 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
151 fprintf (FILE, "\t.word .L%d\n", VALUE)
153 /* Underscores are not used on Unicom PBD coff systems. */
154 /* This currently seems to only be needed for libgcc2.a */
155 #define NO_UNDERSCORES
157 /* Output assembler code to FILE to increment profiler label # LABELNO
158 for profiling a function entry. */
160 #undef FUNCTION_PROFILER
161 #define FUNCTION_PROFILER(FILE, LABELNO) \
162 fprintf (FILE, "\tsethi %%hi(.LP%d),%%o0\n\tcall mcount\n\tor %%lo(.LP%d),%%o0,%%o0\n", \
163 (LABELNO), (LABELNO))
165 /* Output assembler code to FILE to initialize this source file's
166 basic block profiling info, if that has not already been done. */
168 #undef FUNCTION_BLOCK_PROFILER
169 #define FUNCTION_BLOCK_PROFILER(FILE, LABELNO) \
170 fprintf (FILE, "\tsethi %%hi(.LPBX0),%%o0\n\tld [%%lo(.LPBX0)+%%o0],%%o1\n\ttst %%o1\n\tbne .LPY%d\n\tnop\n\tcall ___bb_init_func\n\tnop\n.LPY%d:\n", \
171 (LABELNO), (LABELNO))
173 /* Output assembler code to FILE to increment the entry-count for
174 the BLOCKNO'th basic block in this source file. */
176 #undef BLOCK_PROFILER
177 #define BLOCK_PROFILER(FILE, BLOCKNO) \
179 int blockn = (BLOCKNO); \
180 fprintf (FILE, "\tsethi %%hi(.LPBX2+%d),%%g1\n\tld [%%lo(.LPBX2+%d)+%%g1],%%g2\n\
181 \tadd %%g2,1,%%g2\n\tst %%g2,[%%lo(.LPBX2+%d)+%%g1]\n", \
182 4 * blockn, 4 * blockn, 4 * blockn); \
183 CC_STATUS_INIT; /* We have clobbered %g1. Also %g2. */ \
185 /* This is needed for SunOS 4.0, and should not hurt for 3.2
187 #undef ASM_OUTPUT_SOURCE_LINE(file, line)
188 #define ASM_OUTPUT_SOURCE_LINE(file, line) \
189 { static int sym_lineno = 1; \
190 fprintf (file, ".stabn 68,0,%d,.LM%d\n.LM%d:\n", \
191 line, sym_lineno, sym_lineno); \
194 #define ASM_INT_OP ".long "
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