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/* Target definitions for GNU compiler for Intel 80860 running System V.3
Copyright (C) 1991, 1996, 2000 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 "\t.byte\t"
#define ASM_OUTPUT_ASCII(FILE, STR, LENGTH) \
do \
{ \
register const unsigned char *str = (const unsigned char *) (STR); \
register const 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), "%s%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), "%s\"", 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 "\t.section\t.ctors,\"x\""
#undef DTORS_SECTION_ASM_OP
#define DTORS_SECTION_ASM_OP "\t.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 "\t.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
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