| /* Target definitions for GNU compiler for Intel 80860 running System V.3 |
| Copyright (C) 1991, 1996 Free Software Foundation, Inc. |
| Contributed by Ron Guilmette (rfg@monkeys.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. */ |
| |
| #undef TARGET_VERSION |
| #define TARGET_VERSION fprintf (stderr, " (i860, System V Release 3)") |
| |
| /* Provide a set of pre-definitions and pre-assertions appropriate for |
| the i860 running svr3. */ |
| #define CPP_PREDEFINES "-Di860 -Dunix -D__svr3__ -Asystem(unix) -Asystem(svr3) -Acpu(i860) -Amachine(i860)" |
| |
| /* Use crt1.o as a startup file and crtn.o as a closing file. */ |
| |
| #define STARTFILE_SPEC \ |
| "%{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}}" |
| |
| #define LIB_SPEC "%{p:-L/usr/lib/libp}%{pg:-L/usr/lib/libp} -lc crtn.o%s" |
| |
| /* Special flags for the linker. I don't know what they do. */ |
| |
| #define LINK_SPEC "%{T*} %{z:-lm}" |
| |
| /* The prefix to be used in assembler output for all names of registers. |
| None is needed in V.3. */ |
| |
| #define I860_REG_PREFIX "" |
| |
| /* Delimiter that starts comments in the assembler code. */ |
| |
| #define ASM_COMMENT_START "//" |
| |
| /* Don't renumber the regusters for debugger output. */ |
| |
| #define DBX_REGISTER_NUMBER(REGNO) (REGNO) |
| |
| /* Output the special word the System V 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 System V 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) |
| |
| /* This says how to output an assembler line |
| to define a local common symbol. |
| The difference from svr3.h is we don't limit align to 2. */ |
| |
| #undef ASM_OUTPUT_LOCAL |
| #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \ |
| do { \ |
| int align = exact_log2 (ROUNDED); \ |
| data_section (); \ |
| ASM_OUTPUT_ALIGN ((FILE), align == -1 ? 2 : align); \ |
| ASM_OUTPUT_LABEL ((FILE), (NAME)); \ |
| fprintf ((FILE), "\t.set .,.+%u\n", (ROUNDED)); \ |
| } while (0) |
| |
| /* The routine used to output string literals. |
| |
| #define ASCII_DATA_ASM_OP ".byte" |
| |
| #define ASM_OUTPUT_ASCII(FILE, STR, LENGTH) \ |
| do \ |
| { \ |
| register unsigned char *str = (unsigned char *) (STR); \ |
| register unsigned char *limit = str + (LENGTH); \ |
| register unsigned bytes_in_chunk = 0; \ |
| for (; str < limit; str++) \ |
| { \ |
| register unsigned ch = *str; \ |
| if (ch < 32 || ch == '\\' || ch == '"' || ch >= 127) \ |
| { \ |
| if (bytes_in_chunk > 0) \ |
| { \ |
| fprintf ((FILE), "\"\n"); \ |
| bytes_in_chunk = 0; \ |
| } \ |
| fprintf ((FILE), "\t%s\t%d\n", ASM_BYTE_OP, ch); \ |
| } \ |
| else \ |
| { \ |
| if (bytes_in_chunk >= 60) \ |
| { \ |
| fprintf ((FILE), "\"\n"); \ |
| bytes_in_chunk = 0; \ |
| } \ |
| if (bytes_in_chunk == 0) \ |
| fprintf ((FILE), "\t%s\t\"", ASCII_DATA_ASM_OP); \ |
| putc (ch, (FILE)); \ |
| bytes_in_chunk++; \ |
| } \ |
| } \ |
| if (bytes_in_chunk > 0) \ |
| fprintf ((FILE), "\"\n"); \ |
| } \ |
| while (0) |
| |
| |
| #undef CTORS_SECTION_ASM_OP |
| #define CTORS_SECTION_ASM_OP ".section\t.ctors,\"x\"" |
| #undef DTORS_SECTION_ASM_OP |
| #define DTORS_SECTION_ASM_OP ".section\t.dtors,\"x\"" |
| |
| /* 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; \ |
| } \ |
| } |
| |
| /* Enable the `const' section that svr3.h defines how to use. */ |
| #undef USE_CONST_SECTION |
| #define USE_CONST_SECTION 1 |
