| /* Target definitions for GNU compiler for Intel 80386 running Dynix/ptx v4 |
| Copyright (C) 1996 Free Software Foundation, Inc. |
| |
| Modified from sysv4.h |
| Originally written by Ron Guilmette (rfg@netcom.com). |
| Modified by Tim Wright (timw@sequent.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, 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #include "i386/i386.h" /* Base i386 target machine definitions */ |
| #include "i386/att.h" /* Use the i386 AT&T assembler syntax */ |
| #include "ptx4.h" /* Rest of definitions (non architecture dependent) */ |
| |
| #undef TARGET_VERSION |
| #define TARGET_VERSION fprintf (stderr, " (i386 Sequent Dynix/ptx Version 4)"); |
| |
| /* The svr4 ABI for the i386 says that records and unions are returned |
| in memory. */ |
| |
| #undef RETURN_IN_MEMORY |
| #define RETURN_IN_MEMORY(TYPE) \ |
| (TYPE_MODE (TYPE) == BLKmode \ |
| || (VECTOR_MODE_P (TYPE_MODE (TYPE)) && int_size_in_bytes (TYPE) == 8)) |
| |
| /* Define which macros to predefine. _SEQUENT_ is our extension. */ |
| /* This used to define X86, but james@bigtex.cactus.org says that |
| is supposed to be defined optionally by user programs--not by default. */ |
| #define CPP_PREDEFINES \ |
| "-Dunix -D_SEQUENT_ -Asystem=unix -Asystem=ptx4" |
| |
| /* This is how to output assembly code to define a `float' constant. |
| We always have to use a .long pseudo-op to do this because the native |
| SVR4 ELF assembler is buggy and it generates incorrect values when we |
| try to use the .float pseudo-op instead. */ |
| |
| #undef ASM_OUTPUT_FLOAT |
| #define ASM_OUTPUT_FLOAT(FILE,VALUE) \ |
| do { long value; \ |
| REAL_VALUE_TO_TARGET_SINGLE ((VALUE), value); \ |
| if (sizeof (int) == sizeof (long)) \ |
| fprintf((FILE), "%s\t0x%x\n", ASM_LONG, value); \ |
| else \ |
| fprintf((FILE), "%s\t0x%lx\n", ASM_LONG, value); \ |
| } while (0) |
| |
| /* This is how to output assembly code to define a `double' constant. |
| We always have to use a pair of .long pseudo-ops to do this because |
| the native SVR4 ELF assembler is buggy and it generates incorrect |
| values when we try to use the .double pseudo-op instead. */ |
| |
| #undef ASM_OUTPUT_DOUBLE |
| #define ASM_OUTPUT_DOUBLE(FILE,VALUE) \ |
| do { long value[2]; \ |
| REAL_VALUE_TO_TARGET_DOUBLE ((VALUE), value); \ |
| if (sizeof (int) == sizeof (long)) \ |
| { \ |
| fprintf((FILE), "%s\t0x%x\n", ASM_LONG, value[0]); \ |
| fprintf((FILE), "%s\t0x%x\n", ASM_LONG, value[1]); \ |
| } \ |
| else \ |
| { \ |
| fprintf((FILE), "%s\t0x%lx\n", ASM_LONG, value[0]); \ |
| fprintf((FILE), "%s\t0x%lx\n", ASM_LONG, value[1]); \ |
| } \ |
| } while (0) |
| |
| |
| #undef ASM_OUTPUT_LONG_DOUBLE |
| #define ASM_OUTPUT_LONG_DOUBLE(FILE,VALUE) \ |
| do { long value[3]; \ |
| REAL_VALUE_TO_TARGET_LONG_DOUBLE ((VALUE), value); \ |
| if (sizeof (int) == sizeof (long)) \ |
| { \ |
| fprintf((FILE), "%s\t0x%x\n", ASM_LONG, value[0]); \ |
| fprintf((FILE), "%s\t0x%x\n", ASM_LONG, value[1]); \ |
| fprintf((FILE), "%s\t0x%x\n", ASM_LONG, value[2]); \ |
| } \ |
| else \ |
| { \ |
| fprintf((FILE), "%s\t0x%lx\n", ASM_LONG, value[0]); \ |
| fprintf((FILE), "%s\t0x%lx\n", ASM_LONG, value[1]); \ |
| fprintf((FILE), "%s\t0x%lx\n", ASM_LONG, value[2]); \ |
| } \ |
| } while (0) |
| |
| /* Output at beginning of assembler file. */ |
| /* The .file command should always begin the output. */ |
| |
| #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) |
| |
| #undef DBX_REGISTER_NUMBER |
| #define DBX_REGISTER_NUMBER(n) svr4_dbx_register_map[n] |
| |
| /* The routine used to output sequences of byte values. We use a special |
| version of this for most svr4 targets because doing so makes the |
| generated assembly code more compact (and thus faster to assemble) |
| as well as more readable. Note that if we find subparts of the |
| character sequence which end with NUL (and which are shorter than |
| STRING_LIMIT) we output those using ASM_OUTPUT_LIMITED_STRING. */ |
| |
| #undef ASM_OUTPUT_ASCII |
| #define ASM_OUTPUT_ASCII(FILE, STR, LENGTH) \ |
| do \ |
| { \ |
| register const unsigned char *_ascii_bytes = \ |
| (const unsigned char *) (STR); \ |
| register const unsigned char *limit = _ascii_bytes + (LENGTH); \ |
| register unsigned bytes_in_chunk = 0; \ |
| for (; _ascii_bytes < limit; _ascii_bytes++) \ |
| { \ |
| register const unsigned char *p; \ |
| if (bytes_in_chunk >= 64) \ |
| { \ |
| fputc ('\n', (FILE)); \ |
| bytes_in_chunk = 0; \ |
| } \ |
| for (p = _ascii_bytes; p < limit && *p != '\0'; p++) \ |
| continue; \ |
| if (p < limit && (p - _ascii_bytes) <= STRING_LIMIT) \ |
| { \ |
| if (bytes_in_chunk > 0) \ |
| { \ |
| fputc ('\n', (FILE)); \ |
| bytes_in_chunk = 0; \ |
| } \ |
| ASM_OUTPUT_LIMITED_STRING ((FILE), _ascii_bytes); \ |
| _ascii_bytes = p; \ |
| } \ |
| else \ |
| { \ |
| if (bytes_in_chunk == 0) \ |
| fprintf ((FILE), "\t.byte\t"); \ |
| else \ |
| fputc (',', (FILE)); \ |
| fprintf ((FILE), "0x%02x", *_ascii_bytes); \ |
| bytes_in_chunk += 5; \ |
| } \ |
| } \ |
| if (bytes_in_chunk > 0) \ |
| fprintf ((FILE), "\n"); \ |
| } \ |
| while (0) |
| |
| /* This is how to output an element of a case-vector that is relative. |
| This is only used for PIC code. See comments by the `casesi' insn in |
| i386.md for an explanation of the expression this outputs. */ |
| |
| #undef ASM_OUTPUT_ADDR_DIFF_ELT |
| #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \ |
| fprintf (FILE, "\t.long _GLOBAL_OFFSET_TABLE_+[.-%s%d]\n", LPREFIX, VALUE) |
| |
| /* Indicate that jump tables go in the text section. This is |
| necessary when compiling PIC code. */ |
| |
| #define JUMP_TABLES_IN_TEXT_SECTION 1 |
