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1.1 root 1: /* Definitions of target machine for GNU compiler,
2: for Sun SPARC-V9 on a hypothetical elf format machine.
3: Copyright (C) 1994 Free Software Foundation, Inc.
4: Contributed by Doug Evans, [email protected].
5:
6: This file is part of GNU CC.
7:
8: GNU CC is free software; you can redistribute it and/or modify
9: it under the terms of the GNU General Public License as published by
10: the Free Software Foundation; either version 2, or (at your option)
11: any later version.
12:
13: GNU CC is distributed in the hope that it will be useful,
14: but WITHOUT ANY WARRANTY; without even the implied warranty of
15: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16: GNU General Public License for more details.
17:
18: You should have received a copy of the GNU General Public License
19: along with GNU CC; see the file COPYING. If not, write to
20: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
21:
22: /* This is a v9 only compiler. -mv8 is not expected to work. If you want
23: a v8/v9 compiler, this isn't the place to do it. */
24: /* ??? Until real v9 machines exist, all of this is subject to change. */
25: /* ??? This file should really be called sp64-sol2.h or some such but that
26: would be a bit misleading since no such machines exist yet. The current
27: name is also misleading since the term "elf" is more properly applied to
28: embedded configurations. */
29:
30: #define SPARCV9 /* See sparc.h. */
31:
32: /* ??? We're taking the scheme of including another file and then overriding
33: the values we don't like a bit too far here. The alternative is to more or
34: less duplicate all of svr4.h, sparc/sysv4.h, and sparc/sol2.h here
35: (suitably cleaned up). Until real sparc64 machines exist, it's not clear
36: which is better. */
37:
38: #include "sparc/sol2.h"
39:
40: /* A v9 compiler with stack-bias, 32 bit integers and 64 bit pointers,
41: in a Medium/Anywhere code model environment. */
42:
43: #undef TARGET_DEFAULT
44: #define TARGET_DEFAULT \
45: (MASK_V9 + MASK_STACK_BIAS + MASK_MEDANY + MASK_PTR64 + MASK_HARD_QUAD + MASK_EPILOGUE + MASK_FPU)
46:
47: #undef CPP_PREDEFINES
48: #define CPP_PREDEFINES \
49: "-Dsun -Dsparc -Dunix -D__svr4__ -D__sparc_v9__ \
50: -Asystem(unix) -Asystem(svr4) -Acpu(sparc64) -Amachine(sparc64)"
51:
52: #undef CPP_SPEC
53: #define CPP_SPEC "\
54: %{mint64:-D__INT_MAX__=9223372036854775807LL -D__LONG_MAX__=9223372036854775807LL} \
55: %{mlong64:-D__LONG_MAX__=9223372036854775807LL} \
56: "
57:
58: #undef MD_EXEC_PREFIX
59: #undef MD_STARTFILE_PREFIX
60:
61: /* Use the default (for now). */
62: #undef STARTFILE_SPEC
63:
64: /* Use the default (for now). */
65: #undef LIB_SPEC
66:
67: /* This is taken from sol2.h. */
68: #undef LINK_SPEC
69: #define LINK_SPEC "\
70: %{!nostdlib:%{!r*:%{!e*:-e _start}}} \
71: %{h*} %{V} %{v:%{!V:-V}} \
72: %{b} %{Wl,*:%*} \
73: %{static:-dn -Bstatic} \
74: %{shared:-G -dy} \
75: %{symbolic:-Bsymbolic -G -dy} \
76: %{G:-G} \
77: %{YP,*} \
78: %{R*} \
79: %{Qy:} %{!Qn:-Qy} \
80: "
81:
82: /* Unfortunately, svr4.h redefines these so we have to restore them to
83: their original values in sparc.h. */
84: /* ??? It might be possible to eventually get svr4.h to do the right thing. */
85:
86: #undef PTRDIFF_TYPE
87: #define PTRDIFF_TYPE "long long int"
88:
89: #undef SIZE_TYPE
90: #define SIZE_TYPE "long long unsigned int"
91:
92: /* ??? This should be 32 bits for v9 but what can we do? */
93: #undef WCHAR_TYPE
94: #define WCHAR_TYPE "short unsigned int"
95:
96: #undef WCHAR_TYPE_SIZE
97: #define WCHAR_TYPE_SIZE 16
98:
99: /* ??? Disabled for v9 as the current implementation of the Medium/Anywhere
100: code model needs this in the data segment (still true?). Let's hope the
101: assembler is fixed. */
102: #undef JUMP_TABLES_IN_TEXT_SECTION
103:
104: /* System V Release 4 uses DWARF debugging info.
105: GDB doesn't support 64 bit stabs yet and the desired debug format is DWARF
106: anyway so it is the default. */
107:
108: #define DWARF_DEBUGGING_INFO
109: #define DBX_DEBUGGING_INFO
110:
111: #undef PREFERRED_DEBUGGING_TYPE
112: #define PREFERRED_DEBUGGING_TYPE DWARF_DEBUG
113:
114: /* Define the names of various pseudo-ops used by the Sparc/svr4 assembler.
115: ??? If ints are 64 bits then UNALIGNED_INT_ASM_OP (defined elsewhere) is
116: misnamed. These should all refer to explicit sizes (half/word/xword?),
117: anything other than short/int/long/etc. */
118:
119: #define UNALIGNED_LONGLONG_ASM_OP ".uaxword"
120:
121: /* DWARF stuff. */
122:
123: #define ASM_OUTPUT_DWARF_ADDR(FILE,LABEL) \
124: do { fprintf ((FILE), "\t%s\t", UNALIGNED_LONGLONG_ASM_OP); \
125: assemble_name (FILE, LABEL); \
126: fprintf (FILE, "\n"); \
127: } while (0)
128:
129: #define ASM_OUTPUT_DWARF_ADDR_CONST(FILE,RTX) \
130: do { \
131: fprintf ((FILE), "\t%s\t", UNALIGNED_LONGLONG_ASM_OP); \
132: output_addr_const ((FILE), (RTX)); \
133: fputc ('\n', (FILE)); \
134: } while (0)
135:
136: /* ??? Not sure if this should be 4 or 8 bytes. 4 works for now. */
137: #define ASM_OUTPUT_DWARF_REF(FILE,LABEL) \
138: do { fprintf ((FILE), "\t%s\t", UNALIGNED_INT_ASM_OP); \
139: assemble_name (FILE, LABEL); \
140: fprintf (FILE, "\n"); \
141: } while (0)
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