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Diffstat (limited to 'gcc/config/i860/sysv3.h')
| -rwxr-xr-x | gcc/config/i860/sysv3.h | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/gcc/config/i860/sysv3.h b/gcc/config/i860/sysv3.h new file mode 100755 index 0000000..56f8e49 --- /dev/null +++ b/gcc/config/i860/sysv3.h @@ -0,0 +1,174 @@ +/* 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 |