388 lines
12 KiB
C
388 lines
12 KiB
C
/* Definitions of target machine for GNU compiler.
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Intel 386 (OSF/1 with OSF/rose) 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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/* Put leading underscores in front of names. */
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#define YES_UNDERSCORES
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#include "halfpic.h"
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#include "i386/gstabs.h"
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/* Get perform_* macros to build libgcc.a. */
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#include "i386/perform.h"
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#define OSF_OS
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#undef WORD_SWITCH_TAKES_ARG
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#define WORD_SWITCH_TAKES_ARG(STR) \
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(!strcmp (STR, "Tdata") || !strcmp (STR, "Ttext") \
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|| !strcmp (STR, "Tbss") || !strcmp (STR, "include") \
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|| !strcmp (STR, "imacros") || !strcmp (STR, "aux-info") \
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|| !strcmp (STR, "pic-names"))
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#define MASK_HALF_PIC 0x40000000 /* Mask for half-pic code */
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#define MASK_HALF_PIC_DEBUG 0x20000000 /* Debug flag */
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#define TARGET_HALF_PIC (target_flags & MASK_HALF_PIC)
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#define TARGET_DEBUG (target_flags & MASK_HALF_PIC_DEBUG)
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#define HALF_PIC_DEBUG TARGET_DEBUG
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#undef SUBTARGET_SWITCHES
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#define SUBTARGET_SWITCHES \
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{ "half-pic", MASK_HALF_PIC}, \
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{ "no-half-pic", -MASK_HALF_PIC}, \
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{ "debugb", MASK_HALF_PIC_DEBUG},
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/* Prefix that appears before all global/static identifiers, except for
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temporary labels. */
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#define IDENTIFIER_PREFIX "_"
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/* Suffix that appears after all global/static identifiers, except for
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temporary labels. */
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#define IDENTIFIER_SUFFIX ""
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/* Change default predefines. */
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#undef CPP_PREDEFINES
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#define CPP_PREDEFINES "-DOSF -DOSF1 -Dunix -Di386"
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#undef CPP_SPEC
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#define CPP_SPEC "\
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%{.S: %{!ansi:%{!traditional:%{!traditional-cpp:%{!ftraditional: -traditional}}}}} \
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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: -D__LANGUAGE_C %{!ansi:-DLANGUAGE_C}}"
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/* Turn on -mpic-extern by default. */
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#undef CC1_SPEC
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#define CC1_SPEC "\
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%{gline:%{!g:%{!g0:%{!g1:%{!g2: -g1}}}}} \
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%{pic-none: -mno-half-pic} \
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%{pic-lib: -mhalf-pic} \
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%{pic-extern: -mhalf-pic} \
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%{pic-calls: -mhalf-pic} \
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%{pic-names*: -mhalf-pic} \
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%{!pic-*: -mhalf-pic}"
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#undef ASM_SPEC
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#define ASM_SPEC ""
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#undef LINK_SPEC
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#define LINK_SPEC "%{v*: -v} \
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%{!noshrlib: %{pic-none: -noshrlib} %{!pic-none: -warn_nopic}} \
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%{nostdlib} %{noshrlib} %{glue}"
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#undef LIB_SPEC
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#define LIB_SPEC "-lc"
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#undef LIBG_SPEC
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#define LIBG_SPEC ""
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}"
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#undef TARGET_VERSION_INTERNAL
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#undef TARGET_VERSION
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#define I386_VERSION " 80386, OSF/rose objects"
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#define TARGET_VERSION_INTERNAL(STREAM) fputs (I386_VERSION, STREAM)
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#define TARGET_VERSION TARGET_VERSION_INTERNAL (stderr)
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#undef MD_EXEC_PREFIX
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#define MD_EXEC_PREFIX "/usr/ccs/gcc/"
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#undef MD_STARTFILE_PREFIX
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#define MD_STARTFILE_PREFIX "/usr/ccs/lib/"
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/* Specify size_t, ptrdiff_t, and wchar_t types. */
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#undef SIZE_TYPE
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#undef PTRDIFF_TYPE
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#undef WCHAR_TYPE
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#undef WCHAR_TYPE_SIZE
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#define SIZE_TYPE "long unsigned int"
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#define PTRDIFF_TYPE "int"
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#define WCHAR_TYPE "unsigned int"
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#define WCHAR_TYPE_SIZE BITS_PER_WORD
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/* Temporarily turn off long double being 96 bits. */
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#undef LONG_DOUBLE_TYPE_SIZE
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/* Tell final.c we don't need a label passed to mcount. */
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#define NO_PROFILE_DATA
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#undef FUNCTION_PROFILER
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#define FUNCTION_PROFILER(FILE, LABELNO) fprintf (FILE, "\tcall _mcount\n")
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/* A C expression that is 1 if the RTX X is a constant which is a
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valid address. On most machines, this can be defined as
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`CONSTANT_P (X)', but a few machines are more restrictive in
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which constant addresses are supported.
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`CONSTANT_P' accepts integer-values expressions whose values are
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not explicitly known, such as `symbol_ref', `label_ref', and
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`high' expressions and `const' arithmetic expressions, in
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addition to `const_int' and `const_double' expressions. */
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#undef CONSTANT_ADDRESS_P
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#define CONSTANT_ADDRESS_P(X) \
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((GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF \
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|| GET_CODE (X) == CONST_INT || GET_CODE (X) == CONST \
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|| GET_CODE (X) == HIGH) && (!HALF_PIC_P () || !HALF_PIC_ADDRESS_P (X)))
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/* Nonzero if the constant value X is a legitimate general operand.
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It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE. */
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#undef LEGITIMATE_CONSTANT_P
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#define LEGITIMATE_CONSTANT_P(X) \
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(!HALF_PIC_P () \
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|| GET_CODE (X) == CONST_DOUBLE \
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|| GET_CODE (X) == CONST_INT \
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|| !HALF_PIC_ADDRESS_P (X))
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/* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
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that is a valid memory address for an instruction.
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The MODE argument is the machine mode for the MEM expression
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that wants to use this address. */
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#undef GO_IF_LEGITIMATE_ADDRESS
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#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \
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{ \
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if (CONSTANT_P (X)) \
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{ \
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if (! HALF_PIC_P () || ! HALF_PIC_ADDRESS_P (X)) \
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goto ADDR; \
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} \
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else \
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{ \
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GO_IF_INDEXING (X, ADDR); \
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\
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if (GET_CODE (X) == PLUS) \
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{ \
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rtx x1 = XEXP (X, 1); \
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\
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if (CONSTANT_P (x1)) \
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{ \
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if (! HALF_PIC_P () || ! HALF_PIC_ADDRESS_P (x1)) \
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{ \
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rtx x0 = XEXP (X, 0); \
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GO_IF_INDEXING (x0, ADDR); \
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} \
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} \
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} \
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} \
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}
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/* Sometimes certain combinations of command options do not make sense
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on a particular target machine. You can define a macro
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`OVERRIDE_OPTIONS' to take account of this. This macro, if
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defined, is executed once just after all the command options have
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been parsed. */
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#define OVERRIDE_OPTIONS \
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{ \
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if (TARGET_HALF_PIC) \
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half_pic_init (); \
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}
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/* Define this macro if references to a symbol must be treated
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differently depending on something about the variable or
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function named by the symbol (such as what section it is in).
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The macro definition, if any, is executed immediately after the
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rtl for DECL has been created and stored in `DECL_RTL (DECL)'.
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The value of the rtl will be a `mem' whose address is a
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`symbol_ref'.
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The usual thing for this macro to do is to a flag in the
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`symbol_ref' (such as `SYMBOL_REF_FLAG') or to store a modified
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name string in the `symbol_ref' (if one bit is not enough
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information).
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The best way to modify the name string is by adding text to the
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beginning, with suitable punctuation to prevent any ambiguity.
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Allocate the new name in `saveable_obstack'. You will have to
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modify `ASM_OUTPUT_LABELREF' to remove and decode the added text
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and output the name accordingly.
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You can also check the information stored in the `symbol_ref' in
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the definition of `GO_IF_LEGITIMATE_ADDRESS' or
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`PRINT_OPERAND_ADDRESS'. */
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#undef ENCODE_SECTION_INFO
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#define ENCODE_SECTION_INFO(DECL) \
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do \
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{ \
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if (HALF_PIC_P ()) \
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HALF_PIC_ENCODE (DECL); \
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} \
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while (0)
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/* Given a decl node or constant node, choose the section to output it in
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and select that section. */
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#undef SELECT_RTX_SECTION
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#define SELECT_RTX_SECTION(MODE, RTX) \
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do \
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{ \
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if (MODE == Pmode && HALF_PIC_P () && HALF_PIC_ADDRESS_P (RTX)) \
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data_section (); \
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else \
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readonly_data_section (); \
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} \
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while (0)
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#undef SELECT_SECTION
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#define SELECT_SECTION(DECL,RELOC) \
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{ \
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if (TREE_CODE (DECL) == STRING_CST) \
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{ \
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if (flag_writable_strings) \
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data_section (); \
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else \
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readonly_data_section (); \
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} \
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else if (TREE_CODE (DECL) != VAR_DECL) \
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readonly_data_section (); \
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else if (!TREE_READONLY (DECL)) \
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data_section (); \
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else \
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readonly_data_section (); \
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}
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/* A C statement (sans semicolon) to output to the stdio stream
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STREAM any text necessary for declaring the name NAME of an
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initialized variable which is being defined. This macro must
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output the label definition (perhaps using `ASM_OUTPUT_LABEL').
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The argument DECL is the `VAR_DECL' tree node representing the
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variable.
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If this macro is not defined, then the variable name is defined
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in the usual manner as a label (by means of `ASM_OUTPUT_LABEL'). */
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#undef ASM_DECLARE_OBJECT_NAME
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#define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL) \
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do \
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{ \
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ASM_OUTPUT_LABEL(STREAM,NAME); \
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HALF_PIC_DECLARE (NAME); \
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} \
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while (0)
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/* This is how to declare a function name. */
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#define ASM_DECLARE_FUNCTION_NAME(STREAM,NAME,DECL) \
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do \
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{ \
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ASM_OUTPUT_LABEL(STREAM,NAME); \
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HALF_PIC_DECLARE (NAME); \
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} \
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while (0)
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/* This says what to print at the end of the assembly file */
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#define ASM_FILE_END(STREAM) \
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do \
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{ \
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if (HALF_PIC_P ()) \
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HALF_PIC_FINISH (STREAM); \
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} \
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while (0)
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/* Tell collect that the object format is OSF/rose. */
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#define OBJECT_FORMAT_ROSE
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/* Tell collect where the appropriate binaries are. */
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#define REAL_LD_FILE_NAME "/usr/ccs/gcc/gld"
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#define REAL_NM_FILE_NAME "/usr/ccs/bin/nm"
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#define REAL_STRIP_FILE_NAME "/usr/ccs/bin/strip"
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/* Use atexit for static constructors/destructors, instead of defining
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our own exit function. */
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#define HAVE_ATEXIT
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/* Define this macro meaning that gcc should find the library 'libgcc.a'
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by hand, rather than passing the argument '-lgcc' to tell the linker
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to do the search */
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#define LINK_LIBGCC_SPECIAL
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/* A C statement to output assembler commands which will identify the object
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file as having been compile with GNU CC. We don't need or want this for
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OSF1. GDB doesn't need it and kdb doesn't like it */
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#define ASM_IDENTIFY_GCC(FILE)
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/* This is how to output an assembler line defining a `double' constant.
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Use "word" pseudos to avoid printing NaNs, infinity, etc. */
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/* This is how to output an assembler line defining a `double' constant. */
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#undef ASM_OUTPUT_DOUBLE
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#ifndef CROSS_COMPILE
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#define ASM_OUTPUT_DOUBLE(STREAM, VALUE) \
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do \
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{ \
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long value_long[2]; \
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REAL_VALUE_TO_TARGET_DOUBLE (VALUE, value_long); \
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\
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fprintf (STREAM, "\t.long\t0x%08lx\t\t# %.20g\n\t.long\t0x%08lx\n", \
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value_long[0], VALUE, value_long[1]); \
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} \
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while (0)
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#else
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#define ASM_OUTPUT_DOUBLE(STREAM, VALUE) \
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fprintf (STREAM, "\t.double\t%.20g\n", VALUE)
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#endif
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/* This is how to output an assembler line defining a `float' constant. */
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#undef ASM_OUTPUT_FLOAT
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#ifndef CROSS_COMPILE
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#define ASM_OUTPUT_FLOAT(STREAM, VALUE) \
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do \
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{ \
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long value_long; \
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REAL_VALUE_TO_TARGET_SINGLE (VALUE, value_long); \
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\
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fprintf (STREAM, "\t.long\t0x%08lx\t\t# %.12g (float)\n", \
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value_long, VALUE); \
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} \
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while (0)
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#else
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#define ASM_OUTPUT_FLOAT(STREAM, VALUE) \
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fprintf (STREAM, "\t.float\t%.12g\n", VALUE)
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#endif
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/* Generate calls to memcpy, etc., not bcopy, etc. */
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#define TARGET_MEM_FUNCTIONS
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/* Don't default to pcc-struct-return, because gcc is the only compiler, and
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we want to retain compatibility with older gcc versions. */
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#define DEFAULT_PCC_STRUCT_RETURN 0
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