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Up to [GCC 2.x] / gcc / config / sparc|
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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
1.1.1.3 ! root 22: the Free Software Foundation, 59 Temple Place - Suite 330,
! 23: Boston, MA 02111-1307, USA. */
1.1 root 24:
25: #include "sparc/sparc.h"
26:
27: /* Names to predefine in the preprocessor for this target machine. */
28:
29: #undef CPP_PREDEFINES
1.1.1.2 root 30: #define CPP_PREDEFINES "-Dsparc -DUnicomPBD -Dunix -D__GCC_NEW_VARARGS__ -Asystem(unix) -Acpu(sparc) -Amachine(sparc)"
1.1 root 31:
32: /* We want DBX format for use with gdb under COFF. */
33:
34: #define DBX_DEBUGGING_INFO
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: /* cpp has to support a #sccs directive for the /usr/include files */
67:
68: #define SCCS_DIRECTIVE
69:
70: /* LINK_SPEC is needed only for SunOS 4. */
71:
72: #undef LINK_SPEC
73:
74: /* Although the gas we use can create .ctor and .dtor sections from N_SETT
75: stabs, it does not support section directives, so we need to have the loader
76: define the lists.
77: */
78: #define CTOR_LISTS_DEFINED_EXTERNALLY
79:
80: /* similar to default, but allows for the table defined by ld with gcc.ifile.
81: nptrs is always 0. So we need to instead check that __DTOR_LIST__[1] != 0.
82: The old check is left in so that the same macro can be used if and when
83: a future version of gas does support section directives. */
84:
85: #define DO_GLOBAL_DTORS_BODY {int nptrs = *(int *)__DTOR_LIST__; int i; \
86: if (nptrs == -1 || (__DTOR_LIST__[0] == 0 && __DTOR_LIST__[1] != 0)) \
87: for (nptrs = 0; __DTOR_LIST__[nptrs + 1] != 0; nptrs++); \
88: for (i = nptrs; i >= 1; i--) \
89: __DTOR_LIST__[i] (); }
90:
91: /*
92: * Here is an example gcc.ifile. I've tested it on PBD sparc
93: * systems. The NEXT(0x200000) works on just about all 386 and m68k systems,
94: * but can be reduced to any power of 2 that is >= NBPS (0x40000 on a pbd).
95:
96: SECTIONS {
97: .text BIND(0x41000200) BLOCK (0x200) :
98: { *(.init) *(.text) vfork = fork; *(.fini) }
99:
100: GROUP BIND( NEXT(0x200000) + ADDR(.text) + SIZEOF(.text)):
101: { .data : { __CTOR_LIST__ = . ; . += 4; *(.ctor) . += 4 ;
102: __DTOR_LIST__ = . ; . += 4; *(.dtor) . += 4 ; }
103: .bss : { }
104: }
105: }
106: */
107:
108: #undef ASM_OUTPUT_LABELREF
109: #define ASM_OUTPUT_LABELREF(FILE,NAME) \
110: fprintf (FILE, "%s", NAME)
111:
112: /* fixes: */
113: /*
114: * Internal labels are prefixed with a period.
115: */
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:
124: #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
125: sprintf (LABEL, "*.%s%d", PREFIX, NUM)
126:
127:
128: /* This is how to output an internal numbered label where
129: PREFIX is the class of label and NUM is the number within the class. */
130:
131: #undef ASM_OUTPUT_INTERNAL_LABEL
132: #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
133: fprintf (FILE, ".%s%d:\n", PREFIX, NUM)
134:
135: /* This is how to output an element of a case-vector that is relative. */
136:
137: #undef ASM_OUTPUT_ADDR_DIFF_ELT
138: #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL) \
139: fprintf (FILE, "\t.word .L%d-.L%d\n", VALUE, REL)
140:
141: /* This is how to output an element of a case-vector that is absolute.
142: (The 68000 does not use such vectors,
143: but we must define this macro anyway.) */
144:
145: #undef ASM_OUTPUT_ADDR_VEC_ELT
146: #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
147: fprintf (FILE, "\t.word .L%d\n", VALUE)
148:
149: /* Output assembler code to FILE to increment profiler label # LABELNO
150: for profiling a function entry. */
151:
152: #undef FUNCTION_PROFILER
153: #define FUNCTION_PROFILER(FILE, LABELNO) \
154: fprintf (FILE, "\tsethi %%hi(.LP%d),%%o0\n\tcall mcount\n\tor %%lo(.LP%d),%%o0,%%o0\n", \
155: (LABELNO), (LABELNO))
156:
157: /* Output assembler code to FILE to initialize this source file's
158: basic block profiling info, if that has not already been done. */
159:
160: #undef FUNCTION_BLOCK_PROFILER
161: #define FUNCTION_BLOCK_PROFILER(FILE, LABELNO) \
162: 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", \
163: (LABELNO), (LABELNO))
164:
165: /* Output assembler code to FILE to increment the entry-count for
166: the BLOCKNO'th basic block in this source file. */
167:
168: #undef BLOCK_PROFILER
169: #define BLOCK_PROFILER(FILE, BLOCKNO) \
170: { \
171: int blockn = (BLOCKNO); \
172: fprintf (FILE, "\tsethi %%hi(.LPBX2+%d),%%g1\n\tld [%%lo(.LPBX2+%d)+%%g1],%%g2\n\
173: \tadd %%g2,1,%%g2\n\tst %%g2,[%%lo(.LPBX2+%d)+%%g1]\n", \
174: 4 * blockn, 4 * blockn, 4 * blockn); \
175: CC_STATUS_INIT; /* We have clobbered %g1. Also %g2. */ \
176: }
177: /* This is needed for SunOS 4.0, and should not hurt for 3.2
178: versions either. */
179: #undef ASM_OUTPUT_SOURCE_LINE(file, line)
180: #define ASM_OUTPUT_SOURCE_LINE(file, line) \
181: { static int sym_lineno = 1; \
182: fprintf (file, ".stabn 68,0,%d,.LM%d\n.LM%d:\n", \
183: line, sym_lineno, sym_lineno); \
184: sym_lineno += 1; }
185:
186: #define ASM_INT_OP ".long "
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