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- /* Target definitions for GNU compiler for Intel 80860 running System V.4
- Copyright (C) 1991 Free Software Foundation, Inc.
-
- Written by Ron Guilmette (rfg@ncd.com).
-
- 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. */
-
- #include "i860/i860.h"
- #include "svr4.h"
-
- #undef TARGET_VERSION
- #define TARGET_VERSION fprintf (stderr, " (i860 System V Release 4)");
-
- /* Provide a set of pre-definitions and pre-assertions appropriate for
- the i860 running svr4. Note that the symbol `__svr4__' MUST BE
- DEFINED! It is needed so that the va_list struct in va-i860.h
- will get correctly defined for the svr4 (ABI compliant) case rather
- than for the previous (svr3, svr2, ...) case. It also needs to be
- defined so that the correct (svr4) version of __builtin_saveregs
- will be selected when we are building gnulib2.c.
- __svr4__ is our extension. */
-
- #define CPP_PREDEFINES \
- "-Di860 -Dunix -DSVR4 -D__svr4__ -Asystem(unix) -Asystem(svr4) -Acpu(i860) -Amachine(i860)"
-
- /* The prefix to be used in assembler output for all names of registers.
- This string gets prepended to all i860 register names (svr4 only). */
-
- #define I860_REG_PREFIX "%"
-
- #define ASM_COMMENT_START "#"
-
- #undef TYPE_OPERAND_FMT
- #define TYPE_OPERAND_FMT "\"%s\""
-
- #define DBX_REGISTER_NUMBER(REGNO) (REGNO)
-
- /* The following macro definition overrides the one in i860.h
- because the svr4 i860 assembler requires a different syntax
- for getting parts of constant/relocatable values. */
-
- #undef PRINT_OPERAND_PART
- #define PRINT_OPERAND_PART(FILE, X, PART_CODE) \
- do { fprintf (FILE, "["); \
- output_address (X); \
- fprintf (FILE, "]@%s", PART_CODE); \
- } while (0)
-
- /* If the host and target formats match, output the floats as hex. */
- #if HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT
- #if defined (HOST_WORDS_BIG_ENDIAN) == WORDS_BIG_ENDIAN
-
- /* This is how to output an assembler line defining a `double' constant.
- Note that the native i860/svr4 ELF assembler can't properly handle
- infinity. It generates an incorrect (non-infinity) value when given
- `.double 99e9999' and it doesn't grok `inf' at all. It also mishandles
- NaNs and -0.0. */
-
- #undef ASM_OUTPUT_DOUBLE
- #define ASM_OUTPUT_DOUBLE(FILE,VALUE) \
- { \
- if (REAL_VALUE_ISINF (VALUE) \
- || REAL_VALUE_ISNAN (VALUE) \
- || REAL_VALUE_MINUS_ZERO (VALUE)) \
- { \
- long t[2]; \
- REAL_VALUE_TO_TARGET_DOUBLE ((VALUE), t); \
- fprintf (FILE, "\t.word 0x%lx\n\t.word 0x%lx\n", t[0], t[1]); \
- } \
- else \
- fprintf (FILE, "\t.double %.20e\n", VALUE); \
- }
-
- /* This is how to output an assembler line defining a `float' constant.
- Note that the native i860/svr4 ELF assembler can't properly handle
- infinity. It actually generates an assembly time error when given
- `.float 99e9999' and it doesn't grok `inf' at all. It also mishandles
- NaNs and -0.0. */
-
- #undef ASM_OUTPUT_FLOAT
- #define ASM_OUTPUT_FLOAT(FILE,VALUE) \
- { \
- if (REAL_VALUE_ISINF (VALUE) \
- || REAL_VALUE_ISNAN (VALUE) \
- || REAL_VALUE_MINUS_ZERO (VALUE)) \
- { \
- long t; \
- REAL_VALUE_TO_TARGET_SINGLE ((VALUE), t); \
- fprintf (FILE, "\t.word 0x%lx\n", t); \
- } \
- else \
- fprintf (FILE, "\t.float %.12e\n", VALUE); \
- }
-
- #endif /* word order matches */
- #endif /* HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT */
-
- #undef ASM_FILE_START
- #define ASM_FILE_START(FILE) \
- do { output_file_directive (FILE, main_input_filename); \
- fprintf (FILE, "\t.version\t\"01.01\"\n"); \
- } while (0)
-
- /* Output the special word the svr4 SDB wants to see just before
- the first word of each function's prologue code. */
-
- extern char *current_function_original_name;
-
- /* This special macro is used to output a magic word just before the
- first word of each function. On some versions of UNIX running on
- the i860, this word can be any word that looks like a NOP, however
- under svr4, this neds to be an `shr r0,r0,r0' instruction in which
- the normally unused low-order bits contain the length of the function
- prologue code (in bytes). This is needed to make the svr4 SDB debugger
- happy. */
-
- #undef ASM_OUTPUT_FUNCTION_PREFIX
- #define ASM_OUTPUT_FUNCTION_PREFIX(FILE, FNNAME) \
- do { ASM_OUTPUT_ALIGN (FILE, 2); \
- fprintf ((FILE), "\t.long\t.ep."); \
- assemble_name (FILE, FNNAME); \
- fprintf (FILE, "-"); \
- assemble_name (FILE, FNNAME); \
- fprintf (FILE, "+0xc8000000\n"); \
- current_function_original_name = (FNNAME); \
- } while (0)
-
- /* Output the special label that must go just after each function's
- prologue code to support svr4 SDB. */
-
- #define ASM_OUTPUT_PROLOGUE_SUFFIX(FILE) \
- do { fprintf (FILE, ".ep."); \
- assemble_name (FILE, current_function_original_name); \
- fprintf (FILE, ":\n"); \
- } while (0)
-
- #undef CTORS_SECTION_ASM_OP
- #define CTORS_SECTION_ASM_OP ".section\t.ctors,\"a\",\"progbits\""
- #undef DTORS_SECTION_ASM_OP
- #define DTORS_SECTION_ASM_OP ".section\t.dtors,\"a\",\"progbits\""
-
- /* Add definitions to support the .tdesc section as specified in the svr4
- ABI for the i860. */
-
- #define TDESC_SECTION_ASM_OP ".section\t.tdesc"
-
- #undef EXTRA_SECTIONS
- #define EXTRA_SECTIONS in_const, in_ctors, in_dtors, in_tdesc
-
- #undef EXTRA_SECTION_FUNCTIONS
- #define EXTRA_SECTION_FUNCTIONS \
- CONST_SECTION_FUNCTION \
- CTORS_SECTION_FUNCTION \
- DTORS_SECTION_FUNCTION \
- TDESC_SECTION_FUNCTION
-
- #define TDESC_SECTION_FUNCTION \
- void \
- tdesc_section () \
- { \
- if (in_section != in_tdesc) \
- { \
- fprintf (asm_out_file, "%s\n", TDESC_SECTION_ASM_OP); \
- in_section = in_tdesc; \
- } \
- }
-
- #ifdef OUTPUT_TDESC
- #undef ASM_FILE_END
- #define ASM_FILE_END(FILE) \
- do { \
- if (current_function_original_name != NULL) { \
- tdesc_section(); \
- fprintf ((FILE), "%s __ETEXT\n", ASM_LONG); \
- fprintf ((FILE), "%s 0\n", ASM_LONG); \
- text_section(); \
- fputs("__ETEXT:\n", (FILE)); \
- } \
- fprintf ((FILE), "\t.ident\t\"GCC: (GNU) %s\"\n", \
- version_string); \
- } while (0)
- #endif
-