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1.1 root 1: /* Definitions of target machine for GNU compiler.
2:
3: Citicorp/TTI Unicom PBD version
4: (using GAS and COFF (encapsulated is unacceptable) )
5:
6: Copyright (C) 1990 Free Software Foundation, Inc.
7:
8: This file is part of GNU CC.
9:
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)
13: any later version.
14:
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.
19:
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. */
23:
24: #include "sparc/sparc.h"
25:
26: /* Names to predefine in the preprocessor for this target machine. */
27:
28: #undef CPP_PREDEFINES
29: #define CPP_PREDEFINES "-Dsparc -DUnicomPBD -Dunix -D__GCC_NEW_VARARGS__ -Asystem(unix) -Acpu(sparc) -Amachine(sparc)"
30:
31: /* We want DBX format for use with gdb under COFF. */
32:
33: #define DBX_DEBUGGING_INFO
34:
35: /* Generate calls to memcpy, memcmp and memset. */
36:
37: #define TARGET_MEM_FUNCTIONS
38:
39: /* we use /lib/libp/lib* when profiling */
40:
41: #undef LIB_SPEC
42: #define LIB_SPEC "%{p:-L/usr/lib/libp} %{pg:-L/usr/lib/libp} -lc"
43:
44:
45: /* Use crt1.o as a startup file and crtn.o as a closing file. */
46: /*
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__.
52: *
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
56: * not get called .
57: */
58:
59: #define STARTFILE_SPEC \
60: "%{!r: gcc.ifile%s} %{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}} \
61: %{!r:_exit.o%s}"
62:
63: #define ENDFILE_SPEC "crtn.o%s"
64:
65: /* cpp has to support a #sccs directive for the /usr/include files */
66:
67: #define SCCS_DIRECTIVE
68:
69: /* LINK_SPEC is needed only for SunOS 4. */
70:
71: #undef LINK_SPEC
72:
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
75: define the lists.
76: */
77: #define CTOR_LISTS_DEFINED_EXTERNALLY
78:
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. */
83:
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] (); }
89:
90: /*
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).
94:
95: SECTIONS {
96: .text BIND(0x41000200) BLOCK (0x200) :
97: { *(.init) *(.text) vfork = fork; *(.fini) }
98:
99: GROUP BIND( NEXT(0x200000) + ADDR(.text) + SIZEOF(.text)):
100: { .data : { __CTOR_LIST__ = . ; . += 4; *(.ctor) . += 4 ;
101: __DTOR_LIST__ = . ; . += 4; *(.dtor) . += 4 ; }
102: .bss : { }
103: }
104: }
105: */
106:
107: #undef ASM_OUTPUT_LABELREF
108: #define ASM_OUTPUT_LABELREF(FILE,NAME) \
109: fprintf (FILE, "%s", NAME)
110:
111: /* fixes: */
112: /*
113: * Internal labels are prefixed with a period.
114: */
115:
116: /* This is how to store into the string LABEL
117: the symbol_ref name of an internal numbered label where
118: PREFIX is the class of label and NUM is the number within the class.
119: This is suitable for output with `assemble_name'. */
120:
121: #undef ASM_GENERATE_INTERNAL_LABEL
122:
123: #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
124: sprintf (LABEL, "*.%s%d", PREFIX, NUM)
125:
126:
127: /* This is how to output an internal numbered label where
128: PREFIX is the class of label and NUM is the number within the class. */
129:
130: #undef ASM_OUTPUT_INTERNAL_LABEL
131: #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
132: fprintf (FILE, ".%s%d:\n", PREFIX, NUM)
133:
134: /* This is how to output an element of a case-vector that is relative. */
135:
136: #undef ASM_OUTPUT_ADDR_DIFF_ELT
137: #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL) \
138: fprintf (FILE, "\t.word .L%d-.L%d\n", VALUE, REL)
139:
140: /* This is how to output an element of a case-vector that is absolute.
141: (The 68000 does not use such vectors,
142: but we must define this macro anyway.) */
143:
144: #undef ASM_OUTPUT_ADDR_VEC_ELT
145: #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
146: fprintf (FILE, "\t.word .L%d\n", VALUE)
147:
148: /* Output assembler code to FILE to increment profiler label # LABELNO
149: for profiling a function entry. */
150:
151: #undef FUNCTION_PROFILER
152: #define FUNCTION_PROFILER(FILE, LABELNO) \
153: fprintf (FILE, "\tsethi %%hi(.LP%d),%%o0\n\tcall mcount\n\tor %%lo(.LP%d),%%o0,%%o0\n", \
154: (LABELNO), (LABELNO))
155:
156: /* Output assembler code to FILE to initialize this source file's
157: basic block profiling info, if that has not already been done. */
158:
159: #undef FUNCTION_BLOCK_PROFILER
160: #define FUNCTION_BLOCK_PROFILER(FILE, LABELNO) \
161: 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", \
162: (LABELNO), (LABELNO))
163:
164: /* Output assembler code to FILE to increment the entry-count for
165: the BLOCKNO'th basic block in this source file. */
166:
167: #undef BLOCK_PROFILER
168: #define BLOCK_PROFILER(FILE, BLOCKNO) \
169: { \
170: int blockn = (BLOCKNO); \
171: fprintf (FILE, "\tsethi %%hi(.LPBX2+%d),%%g1\n\tld [%%lo(.LPBX2+%d)+%%g1],%%g2\n\
172: \tadd %%g2,1,%%g2\n\tst %%g2,[%%lo(.LPBX2+%d)+%%g1]\n", \
173: 4 * blockn, 4 * blockn, 4 * blockn); \
174: CC_STATUS_INIT; /* We have clobbered %g1. Also %g2. */ \
175: }
176: /* This is needed for SunOS 4.0, and should not hurt for 3.2
177: versions either. */
178: #undef ASM_OUTPUT_SOURCE_LINE(file, line)
179: #define ASM_OUTPUT_SOURCE_LINE(file, line) \
180: { static int sym_lineno = 1; \
181: fprintf (file, ".stabn 68,0,%d,.LM%d\n.LM%d:\n", \
182: line, sym_lineno, sym_lineno); \
183: sym_lineno += 1; }
184:
185: #define ASM_INT_OP ".long "
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