706 lines
24 KiB
C
706 lines
24 KiB
C
/* elfos.h -- operating system specific defines to be used when
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targeting GCC for some generic ELF system
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Copyright (C) 1991, 1994, 1995, 1999, 2000, 2001
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Free Software Foundation, Inc.
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Based on svr4.h contributed by Ron Guilmette (rfg@netcom.com).
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This file is part of GNU CC.
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GNU CC 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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GNU CC 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 GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* Define a symbol indicating that we are using elfos.h.
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Some CPU specific configuration files use this. */
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#define USING_ELFOS_H
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/* The prefix to add to user-visible assembler symbols.
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For ELF systems the convention is *not* to prepend a leading
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underscore onto user-level symbol names. */
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#undef USER_LABEL_PREFIX
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#define USER_LABEL_PREFIX ""
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/* Biggest alignment supported by the object file format of this
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machine. Use this macro to limit the alignment which can be
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specified using the `__attribute__ ((aligned (N)))' construct. If
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not defined, the default value is `BIGGEST_ALIGNMENT'. */
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#ifndef MAX_OFILE_ALIGNMENT
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#define MAX_OFILE_ALIGNMENT (32768 * 8)
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#endif
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/* Use periods rather than dollar signs in special g++ assembler names. */
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#define NO_DOLLAR_IN_LABEL
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/* Writing `int' for a bitfield forces int alignment for the structure. */
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#define PCC_BITFIELD_TYPE_MATTERS 1
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/* Implicit library calls should use memcpy, not bcopy, etc. */
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#define TARGET_MEM_FUNCTIONS
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/* Handle #pragma weak and #pragma pack. */
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#define HANDLE_SYSV_PRAGMA
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/* System V Release 4 uses DWARF debugging info. */
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#ifndef DWARF_DEBUGGING_INFO
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#define DWARF_DEBUGGING_INFO 1
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#endif
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/* All ELF targets can support DWARF-2. */
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#ifndef DWARF2_DEBUGGING_INFO
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#define DWARF2_DEBUGGING_INFO 1
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#endif
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/* The GNU tools operate better with dwarf2, and it is required by some
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psABI's. Since we don't have any native tools to be compatible with,
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default to dwarf2. */
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#ifndef PREFERRED_DEBUGGING_TYPE
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#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
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#endif
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/* All SVR4 targets use the ELF object file format. */
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#define OBJECT_FORMAT_ELF
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/* Output #ident as a .ident. */
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#define ASM_OUTPUT_IDENT(FILE, NAME) \
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fprintf (FILE, "%s\"%s\"\n", IDENT_ASM_OP, NAME);
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#define IDENT_ASM_OP "\t.ident\t"
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#undef SET_ASM_OP
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#define SET_ASM_OP "\t.set\t"
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/* This is how to begin an assembly language file. Most svr4 assemblers want
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at least a .file directive to come first, and some want to see a .version
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directive come right after that. Here we just establish a default
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which generates only the .file directive. If you need a .version
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directive for any specific target, you should override this definition
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in the target-specific file which includes this one. */
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#undef ASM_FILE_START
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#define ASM_FILE_START(FILE) \
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output_file_directive ((FILE), main_input_filename)
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/* This is how to allocate empty space in some section. The .zero
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pseudo-op is used for this on most svr4 assemblers. */
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#define SKIP_ASM_OP "\t.zero\t"
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#undef ASM_OUTPUT_SKIP
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#define ASM_OUTPUT_SKIP(FILE, SIZE) \
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fprintf (FILE, "%s%u\n", SKIP_ASM_OP, (SIZE))
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/* This is how to output an internal numbered label where
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PREFIX is the class of label and NUM is the number within the class.
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For most svr4 systems, the convention is that any symbol which begins
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with a period is not put into the linker symbol table by the assembler. */
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#undef ASM_OUTPUT_INTERNAL_LABEL
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#define ASM_OUTPUT_INTERNAL_LABEL(FILE, PREFIX, NUM) \
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do \
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{ \
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fprintf (FILE, ".%s%u:\n", PREFIX, (unsigned) (NUM)); \
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} \
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while (0)
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/* This is how to store into the string LABEL
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the symbol_ref name of an internal numbered label where
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PREFIX is the class of label and NUM is the number within the class.
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This is suitable for output with `assemble_name'.
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For most svr4 systems, the convention is that any symbol which begins
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with a period is not put into the linker symbol table by the assembler. */
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#undef ASM_GENERATE_INTERNAL_LABEL
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#define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \
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do \
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{ \
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sprintf (LABEL, "*.%s%u", PREFIX, (unsigned) (NUM)); \
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} \
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while (0)
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/* Output the label which precedes a jumptable. Note that for all svr4
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systems where we actually generate jumptables (which is to say every
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svr4 target except i386, where we use casesi instead) we put the jump-
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tables into the .rodata section and since other stuff could have been
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put into the .rodata section prior to any given jumptable, we have to
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make sure that the location counter for the .rodata section gets pro-
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perly re-aligned prior to the actual beginning of the jump table. */
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#undef ALIGN_ASM_OP
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#define ALIGN_ASM_OP "\t.align\t"
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#ifndef ASM_OUTPUT_BEFORE_CASE_LABEL
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#define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE, PREFIX, NUM, TABLE) \
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ASM_OUTPUT_ALIGN ((FILE), 2);
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#endif
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#undef ASM_OUTPUT_CASE_LABEL
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#define ASM_OUTPUT_CASE_LABEL(FILE, PREFIX, NUM, JUMPTABLE) \
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do \
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{ \
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ASM_OUTPUT_BEFORE_CASE_LABEL (FILE, PREFIX, NUM, JUMPTABLE) \
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ASM_OUTPUT_INTERNAL_LABEL (FILE, PREFIX, NUM); \
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} \
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while (0)
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/* The standard SVR4 assembler seems to require that certain builtin
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library routines (e.g. .udiv) be explicitly declared as .globl
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in each assembly file where they are referenced. */
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#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
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ASM_GLOBALIZE_LABEL (FILE, XSTR (FUN, 0))
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/* This says how to output assembler code to declare an
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uninitialized external linkage data object. Under SVR4,
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the linker seems to want the alignment of data objects
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to depend on their types. We do exactly that here. */
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#define COMMON_ASM_OP "\t.comm\t"
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#undef ASM_OUTPUT_ALIGNED_COMMON
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#define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN) \
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do \
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{ \
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fprintf ((FILE), "%s", COMMON_ASM_OP); \
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assemble_name ((FILE), (NAME)); \
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fprintf ((FILE), ",%u,%u\n", (SIZE), (ALIGN) / BITS_PER_UNIT); \
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} \
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while (0)
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/* This says how to output assembler code to declare an
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uninitialized internal linkage data object. Under SVR4,
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the linker seems to want the alignment of data objects
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to depend on their types. We do exactly that here. */
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#define LOCAL_ASM_OP "\t.local\t"
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#undef ASM_OUTPUT_ALIGNED_LOCAL
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#define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \
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do \
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{ \
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fprintf ((FILE), "%s", LOCAL_ASM_OP); \
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assemble_name ((FILE), (NAME)); \
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fprintf ((FILE), "\n"); \
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ASM_OUTPUT_ALIGNED_COMMON (FILE, NAME, SIZE, ALIGN); \
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} \
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while (0)
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/* This is the pseudo-op used to generate a contiguous sequence of byte
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values from a double-quoted string WITHOUT HAVING A TERMINATING NUL
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AUTOMATICALLY APPENDED. This is the same for most svr4 assemblers. */
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#undef ASCII_DATA_ASM_OP
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#define ASCII_DATA_ASM_OP "\t.ascii\t"
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/* Support const sections and the ctors and dtors sections for g++.
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Note that there appears to be two different ways to support const
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sections at the moment. You can either #define the symbol
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READONLY_DATA_SECTION (giving it some code which switches to the
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readonly data section) or else you can #define the symbols
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EXTRA_SECTIONS, EXTRA_SECTION_FUNCTIONS, SELECT_SECTION, and
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SELECT_RTX_SECTION. We do both here just to be on the safe side. */
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#define USE_CONST_SECTION 1
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#define CONST_SECTION_ASM_OP "\t.section\t.rodata"
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/* On svr4, we *do* have support for the .init and .fini sections, and we
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can put stuff in there to be executed before and after `main'. We let
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crtstuff.c and other files know this by defining the following symbols.
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The definitions say how to change sections to the .init and .fini
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sections. This is the same for all known svr4 assemblers. */
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#define INIT_SECTION_ASM_OP "\t.section\t.init"
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#define FINI_SECTION_ASM_OP "\t.section\t.fini"
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#ifdef HAVE_GAS_SUBSECTION_ORDERING
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#define ASM_SECTION_START_OP "\t.subsection\t-1"
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/* Output assembly directive to move to the beginning of current section. */
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#define ASM_OUTPUT_SECTION_START(FILE) \
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fprintf ((FILE), "%s\n", ASM_SECTION_START_OP)
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#endif
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/* A default list of other sections which we might be "in" at any given
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time. For targets that use additional sections (e.g. .tdesc) you
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should override this definition in the target-specific file which
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includes this file. */
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#undef EXTRA_SECTIONS
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#define EXTRA_SECTIONS in_const
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/* A default list of extra section function definitions. For targets
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that use additional sections (e.g. .tdesc) you should override this
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definition in the target-specific file which includes this file. */
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#undef EXTRA_SECTION_FUNCTIONS
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#define EXTRA_SECTION_FUNCTIONS \
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CONST_SECTION_FUNCTION
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#define READONLY_DATA_SECTION() const_section ()
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#define CONST_SECTION_FUNCTION \
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void \
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const_section () \
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{ \
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if (!USE_CONST_SECTION) \
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text_section (); \
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else if (in_section != in_const) \
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{ \
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fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP); \
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in_section = in_const; \
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} \
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}
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#define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
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#define UNIQUE_SECTION(DECL, RELOC) \
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do \
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{ \
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int len; \
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int sec; \
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const char *name; \
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char *string; \
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const char *prefix; \
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static const char *const prefixes[4][2] = \
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{ \
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{ ".text.", ".gnu.linkonce.t." }, \
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{ ".rodata.", ".gnu.linkonce.r." }, \
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{ ".data.", ".gnu.linkonce.d." }, \
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{ ".bss.", ".gnu.linkonce.b." } \
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}; \
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\
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if (TREE_CODE (DECL) == FUNCTION_DECL) \
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sec = 0; \
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else if (DECL_INITIAL (DECL) == 0 \
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|| DECL_INITIAL (DECL) == error_mark_node) \
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sec = 3; \
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else if (DECL_READONLY_SECTION (DECL, RELOC)) \
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sec = 1; \
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else \
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sec = 2; \
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\
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name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL)); \
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/* Strip off any encoding in name. */ \
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STRIP_NAME_ENCODING (name, name); \
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prefix = prefixes[sec][DECL_ONE_ONLY(DECL)]; \
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len = strlen (name) + strlen (prefix); \
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string = alloca (len + 1); \
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\
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sprintf (string, "%s%s", prefix, name); \
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\
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DECL_SECTION_NAME (DECL) = build_string (len, string); \
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} \
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while (0)
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/* Switch into a generic section. */
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#define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section
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/* A C statement or statements to switch to the appropriate
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section for output of RTX in mode MODE. RTX is some kind
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of constant in RTL. The argument MODE is redundant except
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in the case of a `const_int' rtx.
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If assembler supports SHF_MERGE sections, put it into
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a .rodata.cstN section where N is size of the constant,
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otherwise into const section. */
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#undef SELECT_RTX_SECTION
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#define SELECT_RTX_SECTION(MODE, RTX, ALIGN) \
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mergeable_constant_section ((MODE), (ALIGN), 0)
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/* A C statement or statements to switch to the appropriate
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section for output of DECL. DECL is either a `VAR_DECL' node
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or a constant of some sort. RELOC indicates whether forming
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the initial value of DECL requires link-time relocations.
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To optimize loading of shared programs, define following subsections
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of data section by attaching:
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.rel
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Section with this string in name contains data that do have
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relocations, so they get grouped together and dynamic linker
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will visit fewer pages in memory.
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.ro
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Marks data read only otherwise. This is useful with prelinking
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as most of relocations won't be dynamically linked and thus
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stay read only.
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.local
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Marks data containing relocations only to local objects. These
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relocation will get fully resolved by prelinking.
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*/
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#undef SELECT_SECTION
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#define SELECT_SECTION(DECL, RELOC, ALIGN) \
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{ \
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if (TREE_CODE (DECL) == STRING_CST) \
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{ \
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if (! flag_writable_strings) \
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mergeable_string_section ((DECL), (ALIGN), 0); \
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else \
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data_section (); \
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} \
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else if (TREE_CODE (DECL) == VAR_DECL) \
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{ \
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if (!TREE_READONLY (DECL) || TREE_SIDE_EFFECTS (DECL) \
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|| !DECL_INITIAL (DECL) \
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|| (DECL_INITIAL (DECL) != error_mark_node \
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&& !TREE_CONSTANT (DECL_INITIAL (DECL)))) \
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{ \
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if (flag_pic && ((RELOC) & 2)) \
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named_section (NULL_TREE, ".data.rel", RELOC); \
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else if (flag_pic && (RELOC)) \
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named_section (NULL_TREE, ".data.rel.local", RELOC);\
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else \
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data_section (); \
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} \
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else if (flag_pic && ((RELOC) & 2)) \
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named_section (NULL_TREE, ".data.rel.ro", RELOC); \
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else if (flag_pic && (RELOC)) \
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named_section (NULL_TREE, ".data.rel.ro.local", RELOC); \
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else if (flag_merge_constants < 2) \
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/* C and C++ don't allow different variables to share \
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the same location. -fmerge-all-constants allows \
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even that (at the expense of not conforming). */ \
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const_section (); \
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else if (TREE_CODE (DECL_INITIAL (DECL)) == STRING_CST) \
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mergeable_string_section (DECL_INITIAL (DECL), (ALIGN), \
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0); \
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else \
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mergeable_constant_section (DECL_MODE (DECL), (ALIGN), \
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0); \
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} \
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else if (TREE_CODE (DECL) == CONSTRUCTOR) \
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{ \
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if ((flag_pic && RELOC) \
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|| TREE_SIDE_EFFECTS (DECL) \
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|| ! TREE_CONSTANT (DECL)) \
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data_section (); \
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else \
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const_section (); \
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} \
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else \
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const_section (); \
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}
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/* Define the strings used for the special svr4 .type and .size directives.
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These strings generally do not vary from one system running svr4 to
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another, but if a given system (e.g. m88k running svr) needs to use
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different pseudo-op names for these, they may be overridden in the
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file which includes this one. */
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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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/* This is how we tell the assembler that a symbol is weak. */
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#define ASM_WEAKEN_LABEL(FILE, NAME) \
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do \
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{ \
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fputs ("\t.weak\t", (FILE)); \
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assemble_name ((FILE), (NAME)); \
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fputc ('\n', (FILE)); \
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} \
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while (0)
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/* The following macro defines the format used to output the second
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operand of the .type assembler directive. Different svr4 assemblers
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expect various different forms for this operand. The one given here
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is just a default. You may need to override it in your machine-
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specific tm.h file (depending upon the particulars of your assembler). */
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#define TYPE_OPERAND_FMT "@%s"
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/* Write the extra assembler code needed to declare a function's result.
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Most svr4 assemblers don't require any special declaration of the
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result value, but there are exceptions. */
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#ifndef ASM_DECLARE_RESULT
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#define ASM_DECLARE_RESULT(FILE, RESULT)
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#endif
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/* These macros generate the special .type and .size directives which
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are used to set the corresponding fields of the linker symbol table
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entries in an ELF object file under SVR4. These macros also output
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the starting labels for the relevant functions/objects. */
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/* Write the extra assembler code needed to declare a function properly.
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Some svr4 assemblers need to also have something extra said about the
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function's return value. We allow for that here. */
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#ifndef ASM_DECLARE_FUNCTION_NAME
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#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
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do \
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{ \
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fprintf (FILE, "%s", TYPE_ASM_OP); \
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assemble_name (FILE, NAME); \
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putc (',', FILE); \
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fprintf (FILE, TYPE_OPERAND_FMT, "function"); \
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putc ('\n', FILE); \
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\
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ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \
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ASM_OUTPUT_LABEL(FILE, NAME); \
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} \
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while (0)
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#endif
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/* Write the extra assembler code needed to declare an object properly. */
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#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
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do \
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{ \
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fprintf (FILE, "%s", TYPE_ASM_OP); \
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assemble_name (FILE, NAME); \
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putc (',', FILE); \
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fprintf (FILE, TYPE_OPERAND_FMT, "object"); \
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putc ('\n', FILE); \
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\
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size_directive_output = 0; \
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\
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if (!flag_inhibit_size_directive \
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|
&& (DECL) && DECL_SIZE (DECL)) \
|
|
{ \
|
|
size_directive_output = 1; \
|
|
fprintf (FILE, "%s", SIZE_ASM_OP); \
|
|
assemble_name (FILE, NAME); \
|
|
putc (',', FILE); \
|
|
fprintf (FILE, HOST_WIDE_INT_PRINT_DEC, \
|
|
int_size_in_bytes (TREE_TYPE (DECL))); \
|
|
fputc ('\n', FILE); \
|
|
} \
|
|
\
|
|
ASM_OUTPUT_LABEL (FILE, NAME); \
|
|
} \
|
|
while (0)
|
|
|
|
/* Output the size directive for a decl in rest_of_decl_compilation
|
|
in the case where we did not do so before the initializer.
|
|
Once we find the error_mark_node, we know that the value of
|
|
size_directive_output was set
|
|
by ASM_DECLARE_OBJECT_NAME when it was run for the same decl. */
|
|
|
|
#define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END)\
|
|
do \
|
|
{ \
|
|
const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \
|
|
\
|
|
if (!flag_inhibit_size_directive \
|
|
&& DECL_SIZE (DECL) \
|
|
&& ! AT_END && TOP_LEVEL \
|
|
&& DECL_INITIAL (DECL) == error_mark_node \
|
|
&& !size_directive_output) \
|
|
{ \
|
|
size_directive_output = 1; \
|
|
fprintf (FILE, "%s", SIZE_ASM_OP); \
|
|
assemble_name (FILE, name); \
|
|
putc (',', FILE); \
|
|
fprintf (FILE, HOST_WIDE_INT_PRINT_DEC, \
|
|
int_size_in_bytes (TREE_TYPE (DECL))); \
|
|
fputc ('\n', FILE); \
|
|
} \
|
|
} \
|
|
while (0)
|
|
|
|
/* This is how to declare the size of a function. */
|
|
#ifndef ASM_DECLARE_FUNCTION_SIZE
|
|
#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
|
|
do \
|
|
{ \
|
|
if (!flag_inhibit_size_directive) \
|
|
{ \
|
|
char label[256]; \
|
|
static int labelno; \
|
|
\
|
|
labelno++; \
|
|
\
|
|
ASM_GENERATE_INTERNAL_LABEL (label, "Lfe", labelno); \
|
|
ASM_OUTPUT_INTERNAL_LABEL (FILE, "Lfe", labelno); \
|
|
\
|
|
fprintf (FILE, "%s", SIZE_ASM_OP); \
|
|
assemble_name (FILE, (FNAME)); \
|
|
fprintf (FILE, ","); \
|
|
assemble_name (FILE, label); \
|
|
fprintf (FILE, "-"); \
|
|
assemble_name (FILE, (FNAME)); \
|
|
putc ('\n', FILE); \
|
|
} \
|
|
} \
|
|
while (0)
|
|
#endif
|
|
|
|
/* A table of bytes codes used by the ASM_OUTPUT_ASCII and
|
|
ASM_OUTPUT_LIMITED_STRING macros. Each byte in the table
|
|
corresponds to a particular byte value [0..255]. For any
|
|
given byte value, if the value in the corresponding table
|
|
position is zero, the given character can be output directly.
|
|
If the table value is 1, the byte must be output as a \ooo
|
|
octal escape. If the tables value is anything else, then the
|
|
byte value should be output as a \ followed by the value
|
|
in the table. Note that we can use standard UN*X escape
|
|
sequences for many control characters, but we don't use
|
|
\a to represent BEL because some svr4 assemblers (e.g. on
|
|
the i386) don't know about that. Also, we don't use \v
|
|
since some versions of gas, such as 2.2 did not accept it. */
|
|
|
|
#define ESCAPES \
|
|
"\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\
|
|
\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\
|
|
\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\
|
|
\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\
|
|
\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\
|
|
\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\
|
|
\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\
|
|
\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"
|
|
|
|
/* Some svr4 assemblers have a limit on the number of characters which
|
|
can appear in the operand of a .string directive. If your assembler
|
|
has such a limitation, you should define STRING_LIMIT to reflect that
|
|
limit. Note that at least some svr4 assemblers have a limit on the
|
|
actual number of bytes in the double-quoted string, and that they
|
|
count each character in an escape sequence as one byte. Thus, an
|
|
escape sequence like \377 would count as four bytes.
|
|
|
|
If your target assembler doesn't support the .string directive, you
|
|
should define this to zero.
|
|
*/
|
|
|
|
#define STRING_LIMIT ((unsigned) 256)
|
|
|
|
#define STRING_ASM_OP "\t.string\t"
|
|
|
|
/* The routine used to output NUL terminated strings. 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, especially for targets like the i386
|
|
(where the only alternative is to output character sequences as
|
|
comma separated lists of numbers). */
|
|
|
|
#define ASM_OUTPUT_LIMITED_STRING(FILE, STR) \
|
|
do \
|
|
{ \
|
|
register const unsigned char *_limited_str = \
|
|
(const unsigned char *) (STR); \
|
|
register unsigned ch; \
|
|
\
|
|
fprintf ((FILE), "%s\"", STRING_ASM_OP); \
|
|
\
|
|
for (; (ch = *_limited_str); _limited_str++) \
|
|
{ \
|
|
register int escape; \
|
|
\
|
|
switch (escape = ESCAPES[ch]) \
|
|
{ \
|
|
case 0: \
|
|
putc (ch, (FILE)); \
|
|
break; \
|
|
case 1: \
|
|
fprintf ((FILE), "\\%03o", ch); \
|
|
break; \
|
|
default: \
|
|
putc ('\\', (FILE)); \
|
|
putc (escape, (FILE)); \
|
|
break; \
|
|
} \
|
|
} \
|
|
\
|
|
fprintf ((FILE), "\"\n"); \
|
|
} \
|
|
while (0)
|
|
|
|
/* 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 >= 60) \
|
|
{ \
|
|
fprintf ((FILE), "\"\n"); \
|
|
bytes_in_chunk = 0; \
|
|
} \
|
|
\
|
|
for (p = _ascii_bytes; p < limit && *p != '\0'; p++) \
|
|
continue; \
|
|
\
|
|
if (p < limit && (p - _ascii_bytes) <= (long)STRING_LIMIT) \
|
|
{ \
|
|
if (bytes_in_chunk > 0) \
|
|
{ \
|
|
fprintf ((FILE), "\"\n"); \
|
|
bytes_in_chunk = 0; \
|
|
} \
|
|
\
|
|
ASM_OUTPUT_LIMITED_STRING ((FILE), _ascii_bytes); \
|
|
_ascii_bytes = p; \
|
|
} \
|
|
else \
|
|
{ \
|
|
register int escape; \
|
|
register unsigned ch; \
|
|
\
|
|
if (bytes_in_chunk == 0) \
|
|
fprintf ((FILE), "%s\"", ASCII_DATA_ASM_OP); \
|
|
\
|
|
switch (escape = ESCAPES[ch = *_ascii_bytes]) \
|
|
{ \
|
|
case 0: \
|
|
putc (ch, (FILE)); \
|
|
bytes_in_chunk++; \
|
|
break; \
|
|
case 1: \
|
|
fprintf ((FILE), "\\%03o", ch); \
|
|
bytes_in_chunk += 4; \
|
|
break; \
|
|
default: \
|
|
putc ('\\', (FILE)); \
|
|
putc (escape, (FILE)); \
|
|
bytes_in_chunk += 2; \
|
|
break; \
|
|
} \
|
|
} \
|
|
} \
|
|
\
|
|
if (bytes_in_chunk > 0) \
|
|
fprintf ((FILE), "\"\n"); \
|
|
} \
|
|
while (0)
|