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- /* Definitions of target machine for GNU compiler.
- Intel 386 (OSF/1 with OSF/rose) version.
- Copyright (C) 1991 Free Software Foundation, Inc.
-
- This file is part of GNU CC.
-
- GNU CC is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
-
- GNU CC is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with GNU CC; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* Put leading underscores in front of names. */
- #define YES_UNDERSCORES
-
- #include "halfpic.h"
- #include "i386gstabs.h"
-
- #define OSF_OS
-
- #undef WORD_SWITCH_TAKES_ARG
- #define WORD_SWITCH_TAKES_ARG(STR) \
- (!strcmp (STR, "Tdata") || !strcmp (STR, "Ttext") \
- || !strcmp (STR, "Tbss") || !strcmp (STR, "include") \
- || !strcmp (STR, "imacros") || !strcmp (STR, "aux-info") \
- || !strcmp (STR, "pic-names"))
-
- #define MASK_HALF_PIC 0x40000000 /* Mask for half-pic code */
- #define MASK_HALF_PIC_DEBUG 0x20000000 /* Debug flag */
-
- #define TARGET_HALF_PIC (target_flags & MASK_HALF_PIC)
- #define TARGET_DEBUG (target_flags & MASK_HALF_PIC_DEBUG)
- #define HALF_PIC_DEBUG TARGET_DEBUG
-
- #undef SUBTARGET_SWITCHES
- #define SUBTARGET_SWITCHES \
- { "half-pic", MASK_HALF_PIC}, \
- { "no-half-pic", -MASK_HALF_PIC}, \
- { "debugb", MASK_HALF_PIC_DEBUG},
-
- /* Prefix that appears before all global/static identifiers, except for
- temporary labels. */
-
- #define IDENTIFIER_PREFIX "_"
-
- /* Suffix that appears after all global/static identifiers, except for
- temporary labels. */
-
- #define IDENTIFIER_SUFFIX ""
-
- /* Change default predefines. */
- #undef CPP_PREDEFINES
- #define CPP_PREDEFINES "-DOSF -DOSF1 -Dunix -Di386"
-
- #undef CPP_SPEC
- #define CPP_SPEC "\
- %{.S: -D__LANGUAGE_ASSEMBLY %{!ansi:-DLANGUAGE_ASSEMBLY}} \
- %{.cc: -D__LANGUAGE_C_PLUS_PLUS} \
- %{.cxx: -D__LANGUAGE_C_PLUS_PLUS} \
- %{.C: -D__LANGUAGE_C_PLUS_PLUS} \
- %{.m: -D__LANGUAGE_OBJECTIVE_C} \
- %{!.S: -D__LANGUAGE_C %{!ansi:-DLANGUAGE_C}}"
-
- /* Turn on -mpic-extern by default. */
- #undef CC1_SPEC
- #define CC1_SPEC "\
- %{gline:%{!g:%{!g0:%{!g1:%{!g2: -g1}}}}} \
- %{pic-none: -mno-half-pic} \
- %{pic-lib: -mhalf-pic} \
- %{pic-extern: -mhalf-pic} \
- %{pic-calls: -mhalf-pic} \
- %{pic-names*: -mhalf-pic} \
- %{!pic-*: -mhalf-pic}"
-
- #undef ASM_SPEC
- #define ASM_SPEC ""
-
- #undef LINK_SPEC
- #define LINK_SPEC "%{v*: -v} \
- %{!noshrlib: %{pic-none: -noshrlib} %{!pic-none: -warn_nopic}} \
- %{nostdlib} %{noshrlib} %{glue}"
-
- #undef LIB_SPEC
- #define LIB_SPEC "-lc"
-
- #undef LIBG_SPEC
- #define LIBG_SPEC ""
-
- #undef STARTFILE_SPEC
- #define STARTFILE_SPEC "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}"
-
- #undef TARGET_VERSION_INTERNAL
- #undef TARGET_VERSION
-
- #define I386_VERSION " 80386, OSF/rose objects"
-
- #define TARGET_VERSION_INTERNAL(STREAM) fputs (I386_VERSION, STREAM)
- #define TARGET_VERSION TARGET_VERSION_INTERNAL (stderr)
-
- #undef MD_EXEC_PREFIX
- #define MD_EXEC_PREFIX "/usr/ccs/gcc/"
-
- #undef MD_STARTFILE_PREFIX
- #define MD_STARTFILE_PREFIX "/usr/ccs/lib/"
-
- /* Specify size_t, ptrdiff_t, and wchar_t types. */
- #undef SIZE_TYPE
- #undef PTRDIFF_TYPE
- #undef WCHAR_TYPE
- #undef WCHAR_TYPE_SIZE
-
- #define SIZE_TYPE "long unsigned int"
- #define PTRDIFF_TYPE "int"
- #define WCHAR_TYPE "unsigned int"
- #define WCHAR_TYPE_SIZE BITS_PER_WORD
-
- /* Tell final.c we don't need a label passed to mcount. */
- #define NO_PROFILE_DATA
-
- #undef FUNCTION_PROFILER
- #define FUNCTION_PROFILER(FILE, LABELNO) fprintf (FILE, "\tcall _mcount\n")
-
- /* Some machines may desire to change what optimizations are
- performed for various optimization levels. This macro, if
- defined, is executed once just after the optimization level is
- determined and before the remainder of the command options have
- been parsed. Values set in this macro are used as the default
- values for the other command line options.
-
- LEVEL is the optimization level specified; 2 if -O2 is
- specified, 1 if -O is specified, and 0 if neither is specified. */
-
- #define OPTIMIZATION_OPTIONS(LEVEL) \
- { \
- flag_gnu_linker = FALSE; \
- \
- if (LEVEL >= 3) \
- flag_inline_functions = TRUE; \
- }
-
- /* A C expression that is 1 if the RTX X is a constant which is a
- valid address. On most machines, this can be defined as
- `CONSTANT_P (X)', but a few machines are more restrictive in
- which constant addresses are supported.
-
- `CONSTANT_P' accepts integer-values expressions whose values are
- not explicitly known, such as `symbol_ref', `label_ref', and
- `high' expressions and `const' arithmetic expressions, in
- addition to `const_int' and `const_double' expressions. */
-
- #undef CONSTANT_ADDRESS_P
- #define CONSTANT_ADDRESS_P(X) \
- (CONSTANT_P (X) && (!HALF_PIC_P () || !HALF_PIC_ADDRESS_P (X)))
-
- /* Nonzero if the constant value X is a legitimate general operand.
- It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE. */
-
- #undef LEGITIMATE_CONSTANT_P
- #define LEGITIMATE_CONSTANT_P(X) \
- (!HALF_PIC_P () \
- || GET_CODE (X) == CONST_DOUBLE \
- || GET_CODE (X) == CONST_INT \
- || !HALF_PIC_ADDRESS_P (X))
-
- /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
- that is a valid memory address for an instruction.
- The MODE argument is the machine mode for the MEM expression
- that wants to use this address. */
-
- #undef GO_IF_LEGITIMATE_ADDRESS
- #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \
- { \
- if (CONSTANT_P (X)) \
- { \
- if (! HALF_PIC_P () || ! HALF_PIC_ADDRESS_P (X)) \
- goto ADDR; \
- } \
- else \
- { \
- GO_IF_INDEXING (X, ADDR); \
- \
- if (GET_CODE (X) == PLUS) \
- { \
- rtx x1 = XEXP (X, 1); \
- \
- if (CONSTANT_P (x1)) \
- { \
- if (! HALF_PIC_P () || ! HALF_PIC_ADDRESS_P (x1)) \
- { \
- rtx x0 = XEXP (X, 0); \
- GO_IF_INDEXING (x0, ADDR); \
- } \
- } \
- } \
- } \
- }
-
- /* Sometimes certain combinations of command options do not make sense
- on a particular target machine. You can define a macro
- `OVERRIDE_OPTIONS' to take account of this. This macro, if
- defined, is executed once just after all the command options have
- been parsed. */
-
- #define OVERRIDE_OPTIONS \
- { \
- if (TARGET_HALF_PIC) \
- half_pic_init (); \
- }
-
- /* Define this macro if references to a symbol must be treated
- differently depending on something about the variable or
- function named by the symbol (such as what section it is in).
-
- The macro definition, if any, is executed immediately after the
- rtl for DECL has been created and stored in `DECL_RTL (DECL)'.
- The value of the rtl will be a `mem' whose address is a
- `symbol_ref'.
-
- The usual thing for this macro to do is to a flag in the
- `symbol_ref' (such as `SYMBOL_REF_FLAG') or to store a modified
- name string in the `symbol_ref' (if one bit is not enough
- information).
-
- The best way to modify the name string is by adding text to the
- beginning, with suitable punctuation to prevent any ambiguity.
- Allocate the new name in `saveable_obstack'. You will have to
- modify `ASM_OUTPUT_LABELREF' to remove and decode the added text
- and output the name accordingly.
-
- You can also check the information stored in the `symbol_ref' in
- the definition of `GO_IF_LEGITIMATE_ADDRESS' or
- `PRINT_OPERAND_ADDRESS'. */
-
- #undef ENCODE_SECTION_INFO
- #define ENCODE_SECTION_INFO(DECL) \
- do \
- { \
- if (HALF_PIC_P ()) \
- HALF_PIC_ENCODE (DECL); \
- } \
- while (0)
-
-
- /* Given a decl node or constant node, choose the section to output it in
- and select that section. */
-
- #undef SELECT_RTX_SECTION
- #define SELECT_RTX_SECTION(MODE, RTX) \
- do \
- { \
- if (MODE == Pmode && HALF_PIC_P () && HALF_PIC_ADDRESS_P (RTX)) \
- data_section (); \
- else \
- readonly_data_section (); \
- } \
- while (0)
-
- #undef SELECT_SECTION
- #define SELECT_SECTION(DECL,RELOC) \
- { \
- if (TREE_CODE (DECL) == STRING_CST) \
- { \
- if (flag_writable_strings) \
- data_section (); \
- else \
- readonly_data_section (); \
- } \
- else if (TREE_CODE (DECL) != VAR_DECL) \
- readonly_data_section (); \
- else if (!TREE_READONLY (DECL)) \
- data_section (); \
- else \
- readonly_data_section (); \
- }
-
-
- /* A C statement (sans semicolon) to output to the stdio stream
- STREAM any text necessary for declaring the name NAME of an
- initialized variable which is being defined. This macro must
- output the label definition (perhaps using `ASM_OUTPUT_LABEL').
- The argument DECL is the `VAR_DECL' tree node representing the
- variable.
-
- If this macro is not defined, then the variable name is defined
- in the usual manner as a label (by means of `ASM_OUTPUT_LABEL'). */
-
- #undef ASM_DECLARE_OBJECT_NAME
- #define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL) \
- do \
- { \
- ASM_OUTPUT_LABEL(STREAM,NAME); \
- HALF_PIC_DECLARE (NAME); \
- } \
- while (0)
-
- /* This is how to declare a function name. */
-
- #define ASM_DECLARE_FUNCTION_NAME(STREAM,NAME,DECL) \
- do \
- { \
- ASM_OUTPUT_LABEL(STREAM,NAME); \
- HALF_PIC_DECLARE (NAME); \
- } \
- while (0)
-
- /* This says what to print at the end of the assembly file */
- #define ASM_FILE_END(STREAM) \
- do \
- { \
- if (HALF_PIC_P ()) \
- HALF_PIC_FINISH (STREAM); \
- } \
- while (0)
-
- /* Tell collect that the object format is OSF/rose. */
- #define OBJECT_FORMAT_ROSE
-
- /* Tell collect where the appropriate binaries are. */
- #define REAL_LD_FILE_NAME "/usr/ccs/gcc/gld"
- #define REAL_NM_FILE_NAME "/usr/ccs/bin/nm"
- #define REAL_STRIP_FILE_NAME "/usr/ccs/bin/strip"
-
- /* Use atexit for static constructors/destructors, instead of defining
- our own exit function. */
- #define HAVE_ATEXIT
-
- /* Define this macro meaning that gcc should find the library 'libgcc.a'
- by hand, rather than passing the argument '-lgcc' to tell the linker
- to do the search */
- #define LINK_LIBGCC_SPECIAL
-
- /* A C statement to output assembler commands which will identify the object
- file as having been compile with GNU CC. We don't need or want this for
- OSF1. GDB doesn't need it and kdb doesn't like it */
- #define ASM_IDENTIFY_GCC(FILE)
-
- /* This is how to output an assembler line defining a `double' constant.
- Use "word" pseudos to avoid printing NaNs, infinity, etc. */
-
- /* This is how to output an assembler line defining a `double' constant. */
-
- #undef ASM_OUTPUT_DOUBLE
-
- #ifndef CROSS_COMPILE
- #define ASM_OUTPUT_DOUBLE(STREAM, VALUE) \
- do \
- { \
- long value_long[2]; \
- REAL_VALUE_TO_TARGET_DOUBLE (VALUE, value_long); \
- \
- fprintf (STREAM, "\t.long\t0x%08lx\t\t# %.20g\n\t.long\t0x%08lx\n", \
- value_long[0], VALUE, value_long[1]); \
- } \
- while (0)
-
- #else
- #define ASM_OUTPUT_DOUBLE(STREAM, VALUE) \
- fprintf (STREAM, "\t.double\t%.20g\n", VALUE)
- #endif
-
- /* This is how to output an assembler line defining a `float' constant. */
-
- #undef ASM_OUTPUT_FLOAT
-
- #ifndef CROSS_COMPILE
- #define ASM_OUTPUT_FLOAT(STREAM, VALUE) \
- do \
- { \
- long value_long; \
- REAL_VALUE_TO_TARGET_SINGLE (VALUE, value_long); \
- \
- fprintf (STREAM, "\t.long\t0x%08lx\t\t# %.12g (float)\n", \
- value_long, VALUE); \
- } \
- while (0)
-
- #else
- #define ASM_OUTPUT_FLOAT(STREAM, VALUE) \
- fprintf (STREAM, "\t.float\t%.12g\n", VALUE)
- #endif
-
-
- /* Generate calls to memcpy, etc., not bcopy, etc. */
- #define TARGET_MEM_FUNCTIONS
-
-
-
- /* Defines to be able to build libgcc.a with GCC. */
-
- /* It might seem that these are not important, since gcc 2 will never
- call libgcc for these functions. But programs might be linked with
- code compiled by gcc 1, and then these will be used. */
-
- #define perform_udivsi3(a,b) \
- { \
- register int dx asm("dx"); \
- register int ax asm("ax"); \
- \
- dx = 0; \
- ax = a; \
- asm ("divl %3" : "=a" (ax), "=d" (dx) : "a" (ax), "g" (b), "d" (dx)); \
- return ax; \
- }
-
- #define perform_divsi3(a,b) \
- { \
- register int dx asm("dx"); \
- register int ax asm("ax"); \
- \
- ax = a; \
- asm ("cltd\n\tidivl %3" : "=a" (ax), "=d" (dx) : "a" (ax), "g" (b)); \
- return ax; \
- }
-
- #define perform_umodsi3(a,b) \
- { \
- register int dx asm("dx"); \
- register int ax asm("ax"); \
- \
- dx = 0; \
- ax = a; \
- asm ("divl %3" : "=a" (ax), "=d" (dx) : "a" (ax), "g" (b), "d" (dx)); \
- return dx; \
- }
-
- #define perform_modsi3(a,b) \
- { \
- register int dx asm("dx"); \
- register int ax asm("ax"); \
- \
- ax = a; \
- asm ("cltd\n\tidivl %3" : "=a" (ax), "=d" (dx) : "a" (ax), "g" (b)); \
- return dx; \
- }
-
- #define perform_fixdfsi(a) \
- { \
- auto unsigned short ostatus; \
- auto unsigned short nstatus; \
- auto int ret; \
- auto double tmp; \
- \
- &ostatus; /* guarantee these land in memory */ \
- &nstatus; \
- &ret; \
- &tmp; \
- \
- asm volatile ("fnstcw %0" : "=m" (ostatus)); \
- nstatus = ostatus | 0x0c00; \
- asm volatile ("fldcw %0" : /* no outputs */ : "m" (nstatus)); \
- tmp = a; \
- asm volatile ("fldl %0" : /* no outputs */ : "m" (tmp)); \
- asm volatile ("fistpl %0" : "=m" (ret)); \
- asm volatile ("fldcw %0" : /* no outputs */ : "m" (ostatus)); \
- \
- return ret; \
- }
-