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jlechner |
/* Definitions for GCC. Part of the machine description for CRIS.
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Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
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Contributed by Axis Communications. Written by Hans-Peter Nilsson.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to
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the Free Software Foundation, 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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/* After the first "Node:" comment comes all preprocessor directives and
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attached declarations described in the info files, the "Using and
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Porting GCC" manual (uapgcc), in the same order as found in the "Target
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macros" section in the gcc-2.9x CVS edition of 2000-03-17. FIXME: Not
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really, but needs an update anyway.
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There is no generic copy-of-uapgcc comment, you'll have to see uapgcc
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for that. If applicable, there is a CRIS-specific comment. The order
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of macro definitions follow the order in the manual. Every section in
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the manual (node in the info pages) has an introductory `Node:
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<subchapter>' comment. If no macros are defined for a section, only
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the section-comment is present. */
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/* This file defines the macros for a.out that are not covered by cris.h.
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Many macros are copied from elfos.h and should be in some generic
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config/gas-aout.h. */
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/* Node: Driver */
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC \
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"%{melinux:crt0.o%s}\
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%{!melinux:%{sim*:crt1.o%s}%{!sim*:crt0.o%s}}"
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/* Override cris.h define. */
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#undef ENDFILE_SPEC
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#undef CRIS_CPP_SUBTARGET_SPEC
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#define CRIS_CPP_SUBTARGET_SPEC \
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"%{melinux:-D__gnu_linux__ -D__linux__ -D__unix__ -D__elinux__ -D__uclinux__\
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%{!ansi:%{!std=*:%{!undef:-Dlinux -Dunix -Delinux -Duclinux}}}}\
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%{mbest-lib-options:\
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%{!moverride-best-lib-options:\
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%{!march=*:%{!metrax*:%{!mcpu=*:-D__tune_v8 -D__CRIS_arch_tune=8}}}}}"
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#undef CRIS_CC1_SUBTARGET_SPEC
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#define CRIS_CC1_SUBTARGET_SPEC \
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"%{mbest-lib-options:\
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%{!moverride-best-lib-options:\
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%{!march=*:%{!mcpu=*:-mtune=v8}}}}"
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#undef CRIS_ASM_SUBTARGET_SPEC
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#define CRIS_ASM_SUBTARGET_SPEC "--em=crisaout"
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#undef CRIS_LINK_SUBTARGET_SPEC
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#define CRIS_LINK_SUBTARGET_SPEC \
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"-mcrisaout\
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%{sim2:%{!T*:-Tdata 0x4000000 -Tbss 0x8000000}}\
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%{melinux:-Ur -d\
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%{!shlib:%{!symbolic:-Bstatic}}\
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%{shlib:-Bdynamic}\
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%{symbolic:-Bdynamic}\
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%{static:-Bstatic}}\
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%{melinux-stacksize=*:-defsym __Stacksize=%*}"
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/* Previously controlled by target_flags. */
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#undef TARGET_ELF
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#define TARGET_ELF 0
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#undef CRIS_SUBTARGET_HANDLE_OPTION
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#define CRIS_SUBTARGET_HANDLE_OPTION(CODE, ARG, VALUE) \
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do \
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{ \
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switch (CODE) \
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{ \
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case OPT_melinux: \
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target_flags \
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|= (MASK_SVINTO \
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+ MASK_STACK_ALIGN \
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+ MASK_CONST_ALIGN \
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+ MASK_DATA_ALIGN \
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+ MASK_ETRAX4_ADD \
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+ MASK_ALIGN_BY_32); \
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break; \
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\
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default: \
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break; \
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} \
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} \
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while (0)
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#undef CRIS_SUBTARGET_VERSION
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#define CRIS_SUBTARGET_VERSION " - a.out"
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#undef CRIS_SUBTARGET_DEFAULT
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#define CRIS_SUBTARGET_DEFAULT 0
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/* Node: Run-time Target */
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/* For the cris-*-aout subtarget. */
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#undef TARGET_OS_CPP_BUILTINS
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#define TARGET_OS_CPP_BUILTINS() \
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do \
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{ \
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builtin_define ("__AOUT__"); \
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} \
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while (0)
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/* Node: Storage Layout */
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/* All sections but the .bss is rounded up to a 4-byte multiple size. */
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#define MAX_OFILE_ALIGNMENT 32
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| 128 |
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/* Node: Data Output */
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| 130 |
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#define ESCAPES \
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"\1\1\1\1\1\1\1\1btn\1fr\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
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\0\0\"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
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\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\\\0\0\0\
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\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\1\
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\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
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| 136 |
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\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
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\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
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| 138 |
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\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1"
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| 140 |
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/* Some svr4 assemblers have a limit on the number of characters which
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can appear in the operand of a .string directive. If your assembler
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has such a limitation, you should define STRING_LIMIT to reflect that
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limit. Note that at least some svr4 assemblers have a limit on the
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actual number of bytes in the double-quoted string, and that they
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| 145 |
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count each character in an escape sequence as one byte. Thus, an
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| 146 |
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escape sequence like \377 would count as four bytes.
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| 148 |
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If your target assembler doesn't support the .string directive, you
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should define this to zero. */
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#define STRING_LIMIT ((unsigned) 256)
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#define STRING_ASM_OP "\t.string\t"
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#define ASCII_DATA_ASM_OP "\t.ascii\t"
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#define TYPE_ASM_OP "\t.type\t"
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#define SIZE_ASM_OP "\t.size\t"
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#define TYPE_OPERAND_FMT "@%s"
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/* The routine used to output NUL terminated strings. We use a special
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version of this for most svr4 targets because doing so makes the
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generated assembly code more compact (and thus faster to assemble)
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| 162 |
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as well as more readable, especially for targets like the i386
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(where the only alternative is to output character sequences as
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comma separated lists of numbers). */
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| 165 |
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| 166 |
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#define ASM_OUTPUT_LIMITED_STRING(FILE, STR) \
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do \
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{ \
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| 169 |
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register const unsigned char *_limited_str = \
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| 170 |
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(const unsigned char *) (STR); \
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| 171 |
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register unsigned ch; \
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\
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| 173 |
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fprintf ((FILE), "%s\"", STRING_ASM_OP); \
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\
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| 175 |
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for (; (ch = *_limited_str); _limited_str++) \
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| 176 |
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{ \
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| 177 |
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register int escape; \
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| 178 |
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\
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| 179 |
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switch (escape = ESCAPES[ch]) \
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| 180 |
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{ \
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| 181 |
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case 0: \
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| 182 |
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putc (ch, (FILE)); \
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| 183 |
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break; \
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| 184 |
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case 1: \
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| 185 |
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fprintf ((FILE), "\\%03o", ch); \
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| 186 |
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break; \
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| 187 |
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default: \
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| 188 |
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putc ('\\', (FILE)); \
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| 189 |
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putc (escape, (FILE)); \
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| 190 |
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break; \
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| 191 |
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} \
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| 192 |
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} \
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| 193 |
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\
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| 194 |
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fprintf ((FILE), "\"\n"); \
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| 195 |
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} \
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| 196 |
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while (0)
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| 197 |
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| 198 |
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/* The routine used to output sequences of byte values. We use a special
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| 199 |
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version of this for most svr4 targets because doing so makes the
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| 200 |
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generated assembly code more compact (and thus faster to assemble)
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| 201 |
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as well as more readable. Note that if we find subparts of the
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| 202 |
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character sequence which end with NUL (and which are shorter than
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| 203 |
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STRING_LIMIT) we output those using ASM_OUTPUT_LIMITED_STRING. */
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| 204 |
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| 205 |
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#undef ASM_OUTPUT_ASCII
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#define ASM_OUTPUT_ASCII(FILE, STR, LENGTH) \
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| 207 |
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do \
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| 208 |
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{ \
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| 209 |
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register const unsigned char *_ascii_bytes = \
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| 210 |
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(const unsigned char *) (STR); \
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| 211 |
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register const unsigned char *limit = _ascii_bytes + (LENGTH); \
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| 212 |
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register unsigned bytes_in_chunk = 0; \
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| 213 |
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\
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| 214 |
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for (; _ascii_bytes < limit; _ascii_bytes++) \
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| 215 |
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{ \
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| 216 |
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register const unsigned char *p; \
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| 217 |
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\
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| 218 |
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if (bytes_in_chunk >= 60) \
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| 219 |
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{ \
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| 220 |
|
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fprintf ((FILE), "\"\n"); \
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| 221 |
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bytes_in_chunk = 0; \
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| 222 |
|
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} \
|
| 223 |
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\
|
| 224 |
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for (p = _ascii_bytes; p < limit && *p != '\0'; p++) \
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| 225 |
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continue; \
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| 226 |
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\
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| 227 |
|
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if (p < limit && (p - _ascii_bytes) <= (long)STRING_LIMIT) \
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| 228 |
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{ \
|
| 229 |
|
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if (bytes_in_chunk > 0) \
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| 230 |
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{ \
|
| 231 |
|
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fprintf ((FILE), "\"\n"); \
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| 232 |
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bytes_in_chunk = 0; \
|
| 233 |
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} \
|
| 234 |
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\
|
| 235 |
|
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ASM_OUTPUT_LIMITED_STRING ((FILE), _ascii_bytes); \
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| 236 |
|
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_ascii_bytes = p; \
|
| 237 |
|
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} \
|
| 238 |
|
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else \
|
| 239 |
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{ \
|
| 240 |
|
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register int escape; \
|
| 241 |
|
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register unsigned ch; \
|
| 242 |
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\
|
| 243 |
|
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if (bytes_in_chunk == 0) \
|
| 244 |
|
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fprintf ((FILE), "%s\"", ASCII_DATA_ASM_OP); \
|
| 245 |
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\
|
| 246 |
|
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switch (escape = ESCAPES[ch = *_ascii_bytes]) \
|
| 247 |
|
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{ \
|
| 248 |
|
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case 0: \
|
| 249 |
|
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putc (ch, (FILE)); \
|
| 250 |
|
|
bytes_in_chunk++; \
|
| 251 |
|
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break; \
|
| 252 |
|
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case 1: \
|
| 253 |
|
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fprintf ((FILE), "\\%03o", ch); \
|
| 254 |
|
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bytes_in_chunk += 4; \
|
| 255 |
|
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break; \
|
| 256 |
|
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default: \
|
| 257 |
|
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putc ('\\', (FILE)); \
|
| 258 |
|
|
putc (escape, (FILE)); \
|
| 259 |
|
|
bytes_in_chunk += 2; \
|
| 260 |
|
|
break; \
|
| 261 |
|
|
} \
|
| 262 |
|
|
} \
|
| 263 |
|
|
} \
|
| 264 |
|
|
\
|
| 265 |
|
|
if (bytes_in_chunk > 0) \
|
| 266 |
|
|
fprintf ((FILE), "\"\n"); \
|
| 267 |
|
|
} \
|
| 268 |
|
|
while (0)
|
| 269 |
|
|
|
| 270 |
|
|
|
| 271 |
|
|
/* Node: Label Output */
|
| 272 |
|
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|
| 273 |
|
|
#define SET_ASM_OP "\t.set\t"
|
| 274 |
|
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|
| 275 |
|
|
#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
|
| 276 |
|
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(*targetm.asm_out.globalize_label) (FILE, XSTR (FUN, 0))
|
| 277 |
|
|
|
| 278 |
|
|
#define ASM_WEAKEN_LABEL(FILE, NAME) \
|
| 279 |
|
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do \
|
| 280 |
|
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{ \
|
| 281 |
|
|
fputs ("\t.weak\t", (FILE)); \
|
| 282 |
|
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assemble_name ((FILE), (NAME)); \
|
| 283 |
|
|
fputc ('\n', (FILE)); \
|
| 284 |
|
|
} \
|
| 285 |
|
|
while (0)
|
| 286 |
|
|
|
| 287 |
|
|
#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
|
| 288 |
|
|
do \
|
| 289 |
|
|
{ \
|
| 290 |
|
|
ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function"); \
|
| 291 |
|
|
ASM_OUTPUT_LABEL(FILE, NAME); \
|
| 292 |
|
|
} \
|
| 293 |
|
|
while (0)
|
| 294 |
|
|
|
| 295 |
|
|
#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
|
| 296 |
|
|
do \
|
| 297 |
|
|
{ \
|
| 298 |
|
|
HOST_WIDE_INT size; \
|
| 299 |
|
|
\
|
| 300 |
|
|
ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \
|
| 301 |
|
|
\
|
| 302 |
|
|
size_directive_output = 0; \
|
| 303 |
|
|
if (!flag_inhibit_size_directive \
|
| 304 |
|
|
&& (DECL) && DECL_SIZE (DECL)) \
|
| 305 |
|
|
{ \
|
| 306 |
|
|
size_directive_output = 1; \
|
| 307 |
|
|
size = int_size_in_bytes (TREE_TYPE (DECL)); \
|
| 308 |
|
|
ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size); \
|
| 309 |
|
|
} \
|
| 310 |
|
|
\
|
| 311 |
|
|
ASM_OUTPUT_LABEL (FILE, NAME); \
|
| 312 |
|
|
} \
|
| 313 |
|
|
while (0)
|
| 314 |
|
|
|
| 315 |
|
|
#undef ASM_FINISH_DECLARE_OBJECT
|
| 316 |
|
|
#define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END)\
|
| 317 |
|
|
do \
|
| 318 |
|
|
{ \
|
| 319 |
|
|
const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \
|
| 320 |
|
|
HOST_WIDE_INT size; \
|
| 321 |
|
|
\
|
| 322 |
|
|
if (!flag_inhibit_size_directive \
|
| 323 |
|
|
&& DECL_SIZE (DECL) \
|
| 324 |
|
|
&& ! AT_END && TOP_LEVEL \
|
| 325 |
|
|
&& DECL_INITIAL (DECL) == error_mark_node \
|
| 326 |
|
|
&& !size_directive_output) \
|
| 327 |
|
|
{ \
|
| 328 |
|
|
size_directive_output = 1; \
|
| 329 |
|
|
size = int_size_in_bytes (TREE_TYPE (DECL)); \
|
| 330 |
|
|
ASM_OUTPUT_SIZE_DIRECTIVE (FILE, name, size); \
|
| 331 |
|
|
} \
|
| 332 |
|
|
} \
|
| 333 |
|
|
while (0)
|
| 334 |
|
|
|
| 335 |
|
|
#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
|
| 336 |
|
|
do \
|
| 337 |
|
|
{ \
|
| 338 |
|
|
if (!flag_inhibit_size_directive) \
|
| 339 |
|
|
ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME); \
|
| 340 |
|
|
} \
|
| 341 |
|
|
while (0)
|
| 342 |
|
|
|
| 343 |
|
|
/* The configure machinery invokes the assembler without options, which is
|
| 344 |
|
|
not how gcc invokes it. Without options, the multi-target assembler
|
| 345 |
|
|
will probably be found, which is ELF by default. To counter that, we
|
| 346 |
|
|
need to override ELF auto-host.h config stuff which we know collides
|
| 347 |
|
|
with a.out. */
|
| 348 |
|
|
#undef HAVE_GAS_HIDDEN
|
| 349 |
|
|
|
| 350 |
|
|
|
| 351 |
|
|
/* Node: Alignment Output */
|
| 352 |
|
|
|
| 353 |
|
|
#define SKIP_ASM_OP "\t.zero\t"
|
| 354 |
|
|
|
| 355 |
|
|
#undef ASM_OUTPUT_SKIP
|
| 356 |
|
|
#define ASM_OUTPUT_SKIP(FILE, SIZE) \
|
| 357 |
|
|
fprintf (FILE, "%s%u\n", SKIP_ASM_OP, (int)(SIZE))
|
| 358 |
|
|
|
| 359 |
|
|
/* Node: All Debuggers */
|
| 360 |
|
|
|
| 361 |
|
|
#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
|
| 362 |
|
|
|
| 363 |
|
|
|
| 364 |
|
|
/* Node: Misc */
|
| 365 |
|
|
|
| 366 |
|
|
#define HANDLE_SYSV_PRAGMA 1
|
| 367 |
|
|
|
| 368 |
|
|
/* In theory, this one isn't necessary, but over time, external tools have
|
| 369 |
|
|
been primed on names with "." rather than "$". */
|
| 370 |
|
|
#define NO_DOLLAR_IN_LABEL
|
| 371 |
|
|
|
| 372 |
|
|
/* These are undocumented, but to keep a single
|
| 373 |
|
|
CRIS_ASM_OUTPUT_ALIGNED_DECL_COMMON, we set this to an asm that will
|
| 374 |
|
|
emit an error if ever output. It will not be emitted for a.out modulo
|
| 375 |
|
|
careless hacking. */
|
| 376 |
|
|
#define COMMON_ASM_OP "\t.err\t"
|
| 377 |
|
|
#define LOCAL_ASM_OP "\t.err\t"
|
| 378 |
|
|
|
| 379 |
|
|
#if defined(__CRIS__) && defined (__AOUT__) && defined (IN_GCC)
|
| 380 |
|
|
|
| 381 |
|
|
#define CRIS_ABI_VERSION_SYMBOL_STRING ".$CRIS_ABI_V2"
|
| 382 |
|
|
|
| 383 |
|
|
/* Make all a.out library functions have undefined references to the
|
| 384 |
|
|
.$CRIS_ABI_V2 symbol, so it will be picked up. Used by GDB. GDB has
|
| 385 |
|
|
a bug with reading a.out symbols; it does not see the GNU weak
|
| 386 |
|
|
extensions, so we can't have .$CRIS_ABI_V2 weak. Weak. */
|
| 387 |
|
|
__asm__ (".set .$abi_referer," CRIS_ABI_VERSION_SYMBOL_STRING);
|
| 388 |
|
|
#endif
|
| 389 |
|
|
|
| 390 |
|
|
/*
|
| 391 |
|
|
* Local variables:
|
| 392 |
|
|
* eval: (c-set-style "gnu")
|
| 393 |
|
|
* indent-tabs-mode: t
|
| 394 |
|
|
* End:
|
| 395 |
|
|
*/
|
