137 lines
4.9 KiB
C
137 lines
4.9 KiB
C
/* Definitions of target machine for GNU compiler. Iris version.
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Copyright (C) 1991 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#define SGI_TARGET 1 /* inform other mips files this is SGI */
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/* Names to predefine in the preprocessor for this target machine. */
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#define CPP_PREDEFINES "-Dunix -Dmips -Dsgi -DSVR3 -Dhost_mips -DMIPSEB -DSYSTYPE_SYSV"
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#define STARTFILE_SPEC "%{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}}"
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#define CPP_SPEC "\
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%{!ansi:-D__EXTENSIONS__} -D_MIPSEB -D_SYSTYPE_SYSV \
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%{.S: -D_LANGUAGE_ASSEMBLY %{!ansi:-DLANGUAGE_ASSEMBLY}} \
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%{.s: -D_LANGUAGE_ASSEMBLY %{!ansi:-DLANGUAGE_ASSEMBLY}} \
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%{.cc: -D_LANGUAGE_C_PLUS_PLUS} \
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%{.cxx: -D_LANGUAGE_C_PLUS_PLUS} \
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%{.C: -D_LANGUAGE_C_PLUS_PLUS} \
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%{.m: -D_LANGUAGE_OBJECTIVE_C} \
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%{!.S: %{!.s: %{!.cc: %{!.cxx: %{!.C: %{!.m: -D_LANGUAGE_C %{!ansi:-DLANGUAGE_C}}}}}}}"
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#define LIB_SPEC "%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} crtn.o%s"
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#define MACHINE_TYPE "Silicon Graphics Mips"
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/* SGI Iris doesn't support -EB/-EL like other MIPS processors. */
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#define ASM_SPEC "\
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%{!mgas: \
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%{!mrnames: %{!.s:-nocpp} %{.s: %{cpp} %{nocpp}}} \
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%{pipe: %e-pipe is not supported.} \
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%{mips1} %{mips2} %{mips3} \
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%{noasmopt:-O0} \
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%{!noasmopt:%{O:-O2} %{O1:-O2} %{O2:-O2} %{O3:-O3}} \
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%{g} %{g0} %{g1} %{g2} %{g3} %{v} %{K} \
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%{ggdb:-g} %{ggdb0:-g0} %{ggdb1:-g1} %{ggdb2:-g2} %{ggdb3:-g3} \
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%{gstabs:-g} %{gstabs0:-g0} %{gstabs1:-g1} %{gstabs2:-g2} %{gstabs3:-g3} \
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%{gstabs+:-g} %{gstabs+0:-g0} %{gstabs+1:-g1} %{gstabs+2:-g2} %{gstabs+3:-g3} \
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%{gcoff:-g} %{gstabs0:-g0} %{gcoff1:-g1} %{gcoff2:-g2} %{gcoff3:-g3}} \
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%{G*}"
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#define LINK_SPEC "\
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%{G*} \
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%{!mgas: %{mips1} %{mips2} %{mips3} \
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%{bestGnum} %{shared} %{non_shared}}"
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/* Always use 1 for .file number. I [meissner@osf.org] wonder why
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IRIS needs this. */
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#define SET_FILE_NUMBER() num_source_filenames = 1
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/* Put out a label after a .loc. I [meissner@osf.org] wonder why
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IRIS needs this. */
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#define LABEL_AFTER_LOC(STREAM) fprintf (STREAM, "LM%d:\n", ++sym_lineno)
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#define STACK_ARGS_ADJUST(SIZE) \
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{ \
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SIZE.constant += 4; \
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if (SIZE.constant < 32) \
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SIZE.constant = 32; \
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}
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/* Define this macro to control use of the character `$' in
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identifier names. The value should be 0, 1, or 2. 0 means `$'
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is not allowed by default; 1 means it is allowed by default if
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`-traditional' is used; 2 means it is allowed by default provided
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`-ansi' is not used. 1 is the default; there is no need to
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define this macro in that case. */
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#define DOLLARS_IN_IDENTIFIERS 0
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/* Tell G++ not to create constructors or destructors with $'s in them. */
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#define NO_DOLLAR_IN_LABEL 1
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/* Specify size_t, ptrdiff_t, and wchar_t types. */
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#define SIZE_TYPE "unsigned int"
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#define PTRDIFF_TYPE "int"
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#define WCHAR_TYPE "unsigned char"
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#define WCHAR_TYPE_SIZE BITS_PER_UNIT
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/* Generate calls to memcpy, etc., not bcopy, etc. */
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#define TARGET_MEM_FUNCTIONS
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/* Plain char is unsigned in the SGI compiler. */
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#define DEFAULT_SIGNED_CHAR 0
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/* A C statement to initialize the variable parts of a trampoline.
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ADDR is an RTX for the address of the trampoline; FNADDR is an
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RTX for the address of the nested function; STATIC_CHAIN is an
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RTX for the static chain value that should be passed to the
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function when it is called.
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Silicon Graphics machines are supposed to not have a mprotect
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function to enable execute protection, but the stack already
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has execute protection turned on. Because the MIPS chips have
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no method to flush the icache without a system call, this can lose
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if the same address is used for multiple trampolines. */
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#define INITIALIZE_TRAMPOLINE(ADDR, FUNC, CHAIN) \
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{ \
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rtx addr = ADDR; \
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emit_move_insn (gen_rtx (MEM, SImode, plus_constant (addr, 28)), FUNC); \
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emit_move_insn (gen_rtx (MEM, SImode, plus_constant (addr, 32)), CHAIN); \
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}
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/* Attempt to turn on access permissions for the stack. */
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#define TRANSFER_FROM_TRAMPOLINE \
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\
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void \
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__enable_execute_stack (addr) \
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char *addr; \
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{ \
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}
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#include "mips/mips.h"
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