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1.1 root 1: /* Definitions of target machine for GNU compiler. Iris version 5.
2: Copyright (C) 1993 Free Software Foundation, Inc.
3:
4: This file is part of GNU CC.
5:
6: GNU CC is free software; you can redistribute it and/or modify
7: it under the terms of the GNU General Public License as published by
8: the Free Software Foundation; either version 2, or (at your option)
9: any later version.
10:
11: GNU CC is distributed in the hope that it will be useful,
12: but WITHOUT ANY WARRANTY; without even the implied warranty of
13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14: GNU General Public License for more details.
15:
16: You should have received a copy of the GNU General Public License
17: along with GNU CC; see the file COPYING. If not, write to
18: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
19:
20: #define TARGET_DEFAULT MASK_ABICALLS
21: #define ABICALLS_ASM_OP ".option pic2"
22:
23: #include "mips/iris4.h"
24:
1.1.1.2 ! root 25: /* Irix 5 doesn't use COFF, so disable special COFF handling in collect2.c. */
! 26: #undef OBJECT_FORMAT_COFF
! 27:
! 28: /* ??? This is correct, but not very useful, because there is no file that
! 29: uses this macro. */
! 30: /* ??? The best way to handle global constructors under ELF is to use .init
! 31: and .fini sections. Unfortunately, there is apparently no way to get
! 32: the Irix 5.x (x <= 2) assembler to create these sections. So we instead
! 33: use collect. The linker can create these sections via -init and -fini
! 34: options, but using this would require modifying how crtstuff works, and
! 35: I will leave that for another time (or someone else). */
! 36: #define OBJECT_FORMAT_ELF
! 37:
! 38: /* Specify wchar_t types. */
1.1 root 39: #undef WCHAR_TYPE
40: #undef WCHAR_TYPE_SIZE
1.1.1.2 ! root 41: #undef MAX_WCHAR_TYPE_SIZE
1.1 root 42:
43: #define WCHAR_TYPE "long int"
44: #define WCHAR_TYPE_SIZE LONG_TYPE_SIZE
1.1.1.2 ! root 45: #define MAX_WCHAR_TYPE_SIZE MAX_LONG_TYPE_SIZE
1.1 root 46:
47: /* ??? _MIPS_SIM and _MIPS_SZPTR should eventually depend on options when
48: options for them exist. */
49:
50: #undef CPP_PREDEFINES
51: #define CPP_PREDEFINES \
1.1.1.2 ! root 52: "-Dunix -Dmips -Dsgi -Dhost_mips -DMIPSEB -D_MIPSEB -DSYSTYPE_SVR4 \
1.1 root 53: -D_SVR4_SOURCE -D_MODERN_C -D__DSO__ \
54: -D_MIPS_SIM=_MIPS_SIM_ABI32 -D_MIPS_SZPTR=32 \
55: -Asystem(unix) -Asystem(svr4) -Acpu(mips) -Amachine(sgi)"
56:
57: #undef CPP_SPEC
58: #define CPP_SPEC "\
59: %{!ansi:-D__EXTENSIONS__ -D_SGI_SOURCE -D_LONGLONG} \
60: %{.cc: -D_LANGUAGE_C_PLUS_PLUS} \
61: %{.cxx: -D_LANGUAGE_C_PLUS_PLUS} \
62: %{.C: -D_LANGUAGE_C_PLUS_PLUS} \
1.1.1.2 ! root 63: %{.m: -D_LANGUAGE_OBJECTIVE_C -D_LANGUAGE_C} \
! 64: %{.S: -D_LANGUAGE_ASSEMBLY %{!ansi:-DLANGUAGE_ASSEMBLY}} \
! 65: %{.s: -D_LANGUAGE_ASSEMBLY %{!ansi:-DLANGUAGE_ASSEMBLY}} \
! 66: %{!.S:%{!.s: %{!.cc: %{!.cxx: %{!.C: %{!.m: -D_LANGUAGE_C %{!ansi:-DLANGUAGE_C}}}}}}}\
1.1 root 67: %{!mfp64: -D_MIPS_FPSET=16}%{mfp64: -D_MIPS_FPSET=32} \
68: %{mips1: -D_MIPS_ISA=_MIPS_ISA_MIPS1} \
69: %{mips2: -D_MIPS_ISA=_MIPS_ISA_MIPS2} \
70: %{mips3: -D_MIPS_ISA=_MIPS_ISA_MIPS3} \
71: %{!mips1: %{!mips2: %{!mips3: -D_MIPS_ISA=_MIPS_ISA_MIPS1}}} \
72: %{!mint64: -D_MIPS_SZINT=32}%{mint64: -D_MIPS_SZINT=64} \
1.1.1.2 ! root 73: %{!mlong64: -D_MIPS_SZLONG=32}%{mlong64: -D_MIPS_SZLONG=64} \
! 74: %{mlong64:-D__SIZE_TYPE__=long\\ unsigned\\ int -D__PTRDIFF_TYPE__=long\\ int} \
! 75: %{!mlong64:-D__SIZE_TYPE__=unsigned\\ int -D__PTRDIFF_TYPE__=int} \
! 76: %{mips3:-U__mips -D__mips=3}"
1.1 root 77:
78: #undef LINK_SPEC
79: #define LINK_SPEC "\
1.1.1.2 ! root 80: %{G*} %{EB} %{EL} %{mips1} %{mips2} %{mips3} \
! 81: %{bestGnum} %{shared} %{non_shared} \
! 82: %{call_shared} %{no_archive} %{exact_version} \
! 83: %{!shared: %{!non_shared: \
! 84: %{!call_shared: -call_shared -no_unresolved}}} \
! 85: -_SYSTYPE_SVR4"
1.1 root 86:
87: #undef LIB_SPEC
88: #define LIB_SPEC "%{p:-lprof1} %{pg:-lprof1} -lc crtn.o%s"
89:
90: /* We do not want to run mips-tfile! */
91: #undef ASM_FINAL_SPEC
92:
1.1.1.2 ! root 93: /* The system header files are C++ aware. */
! 94: /* ??? Unfortunately, most but not all of the headers are C++ aware.
! 95: Specifically, curses.h is not, and libg++ won't build because of it
! 96: if this is defined. On the other hand, SGI has C++ packages with
! 97: header files in /usr/include, and they won't work unless this is
! 98: defined. We need some way to fix just those files that need fixing. */
! 99: /* #define NO_IMPLICIT_EXTERN_C 1 */
1.1 root 100:
101: /* We don't support debugging info for now. */
102: #undef DBX_DEBUGGING_INFO
103: #undef SDB_DEBUGGING_INFO
104: #undef MIPS_DEBUGGING_INFO
105:
106: #undef MACHINE_TYPE
107: #define MACHINE_TYPE "SGI running IRIX 5.0"
108:
1.1.1.2 ! root 109: /* -G is incompatible with -KPIC which is the default, so only allow objects
! 110: in the small data section if the user explicitly asks for it. */
! 111: #undef MIPS_DEFAULT_GVALUE
! 112: #define MIPS_DEFAULT_GVALUE 0
! 113:
! 114: /* In Irix 5, we must output a `.global name .text' directive for every used
! 115: but undefined function. If we don't, the linker may perform an optimization
! 116: (skipping over the insns that set $gp) when it is unsafe. This is used
! 117: indirectly by ASM_OUTPUT_EXTERNAL. */
! 118: #define ASM_OUTPUT_UNDEF_FUNCTION(FILE, NAME) \
! 119: do { \
! 120: fputs ("\t.globl ", FILE); \
! 121: assemble_name (FILE, NAME); \
! 122: fputs (" .text\n", FILE); \
! 123: } while (0)
! 124:
! 125: /* Also do this for libcalls. */
! 126: #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
! 127: mips_output_external_libcall (FILE, XSTR (FUN, 0))
! 128:
! 129: /* This does for functions what ASM_DECLARE_OBJECT_NAME does for variables.
! 130: This is used indirectly by ASM_OUTPUT_EXTERNAL. */
! 131: #define ASM_DECLARE_FUNCTION_SIZE(STREAM, NAME, DECL) \
! 132: do { \
! 133: tree name_tree = get_identifier (NAME); \
! 134: TREE_ASM_WRITTEN (name_tree) = 1; \
! 135: } while (0)
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