diff options
Diffstat (limited to 'gcc/config/elfos.h')
| -rw-r--r-- | gcc/config/elfos.h | 704 |
1 files changed, 704 insertions, 0 deletions
diff --git a/gcc/config/elfos.h b/gcc/config/elfos.h new file mode 100644 index 00000000000..6c107311fd7 --- /dev/null +++ b/gcc/config/elfos.h @@ -0,0 +1,704 @@ +/* elfos.h -- operating system specific defines to be used when + targeting GCC for some generic ELF system + Copyright (C) 1991, 1994, 1995, 1999 Free Software Foundation, Inc. + Based on svr4.h contributed by Ron Guilmette (rfg@netcom.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. */ + +/* For the sake of libgcc2.c, indicate target supports atexit. */ +#define HAVE_ATEXIT + +#undef ENDFILE_SPEC +#define ENDFILE_SPEC "crtend.o%s" + +#undef STARTFILE_SPEC +#define STARTFILE_SPEC "%{!shared: \ + %{!symbolic: \ + %{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}}}\ + crtbegin.o%s" + +/* Attach a special .ident directive to the end of the file to identify + the version of GCC which compiled this code. The format of the + .ident string is patterned after the ones produced by native svr4 + C compilers. */ + +#define IDENT_ASM_OP ".ident" + +#define ASM_FILE_END(FILE) \ +do { \ + if (!flag_no_ident) \ + fprintf ((FILE), "\t%s\t\"GCC: (GNU) %s\"\n", \ + IDENT_ASM_OP, version_string); \ + } while (0) + +/* Output #ident as a .ident. */ + +#define ASM_OUTPUT_IDENT(FILE, NAME) \ + fprintf (FILE, "\t%s\t\"%s\"\n", IDENT_ASM_OP, NAME); + +/* Use periods rather than dollar signs in special g++ assembler names. */ + +#define NO_DOLLAR_IN_LABEL + +/* Writing `int' for a bitfield forces int alignment for the structure. */ + +#define PCC_BITFIELD_TYPE_MATTERS 1 + +/* Implicit library calls should use memcpy, not bcopy, etc. */ + +#define TARGET_MEM_FUNCTIONS + +/* Handle #pragma weak and #pragma pack. */ + +#define HANDLE_SYSV_PRAGMA + +/* System V Release 4 uses DWARF debugging info. */ + +#define DWARF_DEBUGGING_INFO + +/* All ELF targets can support DWARF-2. */ + +#define DWARF2_DEBUGGING_INFO + +/* Also allow them to support STABS debugging. */ + +#include "dbxelf.h" + +/* The GNU tools operate better with stabs. Since we don't have + any native tools to be compatible with, default to stabs. */ + +#ifndef PREFERRED_DEBUGGING_TYPE +#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG +#endif + +#undef ASM_BYTE_OP +#define ASM_BYTE_OP ".byte" + +#undef SET_ASM_OP +#define SET_ASM_OP ".set" + +/* This is how to begin an assembly language file. Most svr4 assemblers want + at least a .file directive to come first, and some want to see a .version + directive come right after that. Here we just establish a default + which generates only the .file directive. If you need a .version + directive for any specific target, you should override this definition + in the target-specific file which includes this one. */ + +#undef ASM_FILE_START +#define ASM_FILE_START(FILE) \ + output_file_directive ((FILE), main_input_filename) + +/* This is how to allocate empty space in some section. The .zero + pseudo-op is used for this on most svr4 assemblers. */ + +#define SKIP_ASM_OP ".zero" + +#undef ASM_OUTPUT_SKIP +#define ASM_OUTPUT_SKIP(FILE,SIZE) \ + fprintf (FILE, "\t%s\t%u\n", SKIP_ASM_OP, (SIZE)) + +/* This is how to output a reference to a user-level label named NAME. + `assemble_name' uses this. + + For System V Release 4 the convention is *not* to prepend a leading + underscore onto user-level symbol names. */ + +#undef ASM_OUTPUT_LABELREF +#define ASM_OUTPUT_LABELREF(FILE,NAME) fprintf (FILE, "%s", NAME) + +/* This is how to output an internal numbered label where + PREFIX is the class of label and NUM is the number within the class. + + For most svr4 systems, the convention is that any symbol which begins + with a period is not put into the linker symbol table by the assembler. */ + +#undef ASM_OUTPUT_INTERNAL_LABEL +#define ASM_OUTPUT_INTERNAL_LABEL(FILE, PREFIX, NUM) \ +do { \ + fprintf (FILE, ".%s%d:\n", PREFIX, NUM); \ +} while (0) + +/* This is how to store into the string LABEL + the symbol_ref name of an internal numbered label where + PREFIX is the class of label and NUM is the number within the class. + This is suitable for output with `assemble_name'. + + For most svr4 systems, the convention is that any symbol which begins + with a period is not put into the linker symbol table by the assembler. */ + +#undef ASM_GENERATE_INTERNAL_LABEL +#define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \ +do { \ + sprintf (LABEL, "*.%s%d", PREFIX, NUM); \ +} while (0) + +/* Output the label which precedes a jumptable. Note that for all svr4 + systems where we actually generate jumptables (which is to say every + svr4 target except i386, where we use casesi instead) we put the jump- + tables into the .rodata section and since other stuff could have been + put into the .rodata section prior to any given jumptable, we have to + make sure that the location counter for the .rodata section gets pro- + perly re-aligned prior to the actual beginning of the jump table. */ + +#define ALIGN_ASM_OP ".align" + +#ifndef ASM_OUTPUT_BEFORE_CASE_LABEL +#define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE,PREFIX,NUM,TABLE) \ + ASM_OUTPUT_ALIGN ((FILE), 2); +#endif + +#undef ASM_OUTPUT_CASE_LABEL +#define ASM_OUTPUT_CASE_LABEL(FILE,PREFIX,NUM,JUMPTABLE) \ + do { \ + ASM_OUTPUT_BEFORE_CASE_LABEL (FILE, PREFIX, NUM, JUMPTABLE) \ + ASM_OUTPUT_INTERNAL_LABEL (FILE, PREFIX, NUM); \ + } while (0) + +/* The standard SVR4 assembler seems to require that certain builtin + library routines (e.g. .udiv) be explicitly declared as .globl + in each assembly file where they are referenced. */ + +#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \ + ASM_GLOBALIZE_LABEL (FILE, XSTR (FUN, 0)) + +/* This says how to output assembler code to declare an + uninitialized external linkage data object. Under SVR4, + the linker seems to want the alignment of data objects + to depend on their types. We do exactly that here. */ + +#define COMMON_ASM_OP ".comm" + +#undef ASM_OUTPUT_ALIGNED_COMMON +#define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN) \ +do { \ + fprintf ((FILE), "\t%s\t", COMMON_ASM_OP); \ + assemble_name ((FILE), (NAME)); \ + fprintf ((FILE), ",%u,%u\n", (SIZE), (ALIGN) / BITS_PER_UNIT); \ +} while (0) + +/* This says how to output assembler code to declare an + uninitialized internal linkage data object. Under SVR4, + the linker seems to want the alignment of data objects + to depend on their types. We do exactly that here. */ + +#define LOCAL_ASM_OP ".local" + +#undef ASM_OUTPUT_ALIGNED_LOCAL +#define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \ +do { \ + fprintf ((FILE), "\t%s\t", LOCAL_ASM_OP); \ + assemble_name ((FILE), (NAME)); \ + fprintf ((FILE), "\n"); \ + ASM_OUTPUT_ALIGNED_COMMON (FILE, NAME, SIZE, ALIGN); \ +} while (0) + +/* This is the pseudo-op used to generate a 32-bit word of data with a + specific value in some section. This is the same for all known svr4 + assemblers. */ + +#define INT_ASM_OP ".long" + +/* This is the pseudo-op used to generate a contiguous sequence of byte + values from a double-quoted string WITHOUT HAVING A TERMINATING NUL + AUTOMATICALLY APPENDED. This is the same for most svr4 assemblers. */ + +#undef ASCII_DATA_ASM_OP +#define ASCII_DATA_ASM_OP ".ascii" + +/* Support const sections and the ctors and dtors sections for g++. + Note that there appears to be two different ways to support const + sections at the moment. You can either #define the symbol + READONLY_DATA_SECTION (giving it some code which switches to the + readonly data section) or else you can #define the symbols + EXTRA_SECTIONS, EXTRA_SECTION_FUNCTIONS, SELECT_SECTION, and + SELECT_RTX_SECTION. We do both here just to be on the safe side. */ + +#define USE_CONST_SECTION 1 + +#define CONST_SECTION_ASM_OP ".section\t.rodata" + +/* Define the pseudo-ops used to switch to the .ctors and .dtors sections. + + Note that we want to give these sections the SHF_WRITE attribute + because these sections will actually contain data (i.e. tables of + addresses of functions in the current root executable or shared library + file) and, in the case of a shared library, the relocatable addresses + will have to be properly resolved/relocated (and then written into) by + the dynamic linker when it actually attaches the given shared library + to the executing process. (Note that on SVR4, you may wish to use the + `-z text' option to the ELF linker, when building a shared library, as + an additional check that you are doing everything right. But if you do + use the `-z text' option when building a shared library, you will get + errors unless the .ctors and .dtors sections are marked as writable + via the SHF_WRITE attribute.) */ + +#define CTORS_SECTION_ASM_OP ".section\t.ctors,\"aw\"" +#define DTORS_SECTION_ASM_OP ".section\t.dtors,\"aw\"" + +/* On svr4, we *do* have support for the .init and .fini sections, and we + can put stuff in there to be executed before and after `main'. We let + crtstuff.c and other files know this by defining the following symbols. + The definitions say how to change sections to the .init and .fini + sections. This is the same for all known svr4 assemblers. */ + +#define INIT_SECTION_ASM_OP ".section\t.init" +#define FINI_SECTION_ASM_OP ".section\t.fini" + +/* A default list of other sections which we might be "in" at any given + time. For targets that use additional sections (e.g. .tdesc) you + should override this definition in the target-specific file which + includes this file. */ + +#undef EXTRA_SECTIONS +#define EXTRA_SECTIONS in_const, in_ctors, in_dtors + +/* A default list of extra section function definitions. For targets + that use additional sections (e.g. .tdesc) you should override this + definition in the target-specific file which includes this file. */ + +#undef EXTRA_SECTION_FUNCTIONS +#define EXTRA_SECTION_FUNCTIONS \ + CONST_SECTION_FUNCTION \ + CTORS_SECTION_FUNCTION \ + DTORS_SECTION_FUNCTION + +#define READONLY_DATA_SECTION() const_section () + +extern void text_section (); + +#define CONST_SECTION_FUNCTION \ +void \ +const_section () \ +{ \ + if (!USE_CONST_SECTION) \ + text_section(); \ + else if (in_section != in_const) \ + { \ + fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP); \ + in_section = in_const; \ + } \ +} + +#define CTORS_SECTION_FUNCTION \ +void \ +ctors_section () \ +{ \ + if (in_section != in_ctors) \ + { \ + fprintf (asm_out_file, "%s\n", CTORS_SECTION_ASM_OP); \ + in_section = in_ctors; \ + } \ +} + +#define DTORS_SECTION_FUNCTION \ +void \ +dtors_section () \ +{ \ + if (in_section != in_dtors) \ + { \ + fprintf (asm_out_file, "%s\n", DTORS_SECTION_ASM_OP); \ + in_section = in_dtors; \ + } \ +} + +/* Switch into a generic section. + This is currently only used to support section attributes. */ + +#define ASM_OUTPUT_SECTION_NAME(FILE, DECL, NAME, RELOC) \ +do { \ + static struct section_info \ + { \ + struct section_info *next; \ + char *name; \ + enum sect_enum {SECT_RW, SECT_RO, SECT_EXEC} type; \ + } *sections; \ + struct section_info *s; \ + char *mode; \ + enum sect_enum type; \ + \ + for (s = sections; s; s = s->next) \ + if (!strcmp (NAME, s->name)) \ + break; \ + \ + if (DECL && TREE_CODE (DECL) == FUNCTION_DECL) \ + type = SECT_EXEC, mode = "ax"; \ + else if (DECL && DECL_READONLY_SECTION (DECL, RELOC)) \ + type = SECT_RO, mode = "a"; \ + else \ + type = SECT_RW, mode = "aw"; \ + \ + if (s == 0) \ + { \ + s = (struct section_info *) xmalloc (sizeof (struct section_info)); \ + s->name = xmalloc ((strlen (NAME) + 1) * sizeof (*NAME)); \ + strcpy (s->name, NAME); \ + s->type = type; \ + s->next = sections; \ + sections = s; \ + fprintf (FILE, ".section\t%s,\"%s\",@progbits\n", NAME, mode); \ + } \ + else \ + { \ + if (DECL && s->type != type) \ + error_with_decl (DECL, "%s causes a section type conflict"); \ + \ + fprintf (FILE, ".section\t%s\n", NAME); \ + } \ +} while (0) + +#define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1) +#define UNIQUE_SECTION_P(DECL) (DECL_ONE_ONLY (DECL)) +#define UNIQUE_SECTION(DECL,RELOC) \ +do { \ + int len; \ + char *name, *string, *prefix; \ + \ + name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL)); \ + \ + if (! DECL_ONE_ONLY (DECL)) \ + { \ + if (TREE_CODE (DECL) == FUNCTION_DECL) \ + prefix = ".text."; \ + else if (DECL_READONLY_SECTION (DECL, RELOC)) \ + prefix = ".rodata."; \ + else \ + prefix = ".data."; \ + } \ + else if (TREE_CODE (DECL) == FUNCTION_DECL) \ + prefix = ".gnu.linkonce.t."; \ + else if (DECL_READONLY_SECTION (DECL, RELOC)) \ + prefix = ".gnu.linkonce.r."; \ + else \ + prefix = ".gnu.linkonce.d."; \ + \ + len = strlen (name) + strlen (prefix); \ + string = alloca (len + 1); \ + sprintf (string, "%s%s", prefix, name); \ + \ + DECL_SECTION_NAME (DECL) = build_string (len, string); \ +} while (0) +/* A C statement (sans semicolon) to output an element in the table of + global constructors. */ +#define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \ + do { \ + ctors_section (); \ + fprintf (FILE, "\t%s\t ", INT_ASM_OP); \ + assemble_name (FILE, NAME); \ + fprintf (FILE, "\n"); \ + } while (0) + +/* A C statement (sans semicolon) to output an element in the table of + global destructors. */ +#define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \ + do { \ + dtors_section (); \ + fprintf (FILE, "\t%s\t ", INT_ASM_OP); \ + assemble_name (FILE, NAME); \ + fprintf (FILE, "\n"); \ + } while (0) + +/* A C statement or statements to switch to the appropriate + section for output of DECL. DECL is either a `VAR_DECL' node + or a constant of some sort. RELOC indicates whether forming + the initial value of DECL requires link-time relocations. */ + +#define SELECT_SECTION(DECL,RELOC) \ +{ \ + if (TREE_CODE (DECL) == STRING_CST) \ + { \ + if (! flag_writable_strings) \ + const_section (); \ + else \ + data_section (); \ + } \ + else if (TREE_CODE (DECL) == VAR_DECL) \ + { \ + if ((flag_pic && RELOC) \ + || !TREE_READONLY (DECL) || TREE_SIDE_EFFECTS (DECL) \ + || !DECL_INITIAL (DECL) \ + || (DECL_INITIAL (DECL) != error_mark_node \ + && !TREE_CONSTANT (DECL_INITIAL (DECL)))) \ + data_section (); \ + else \ + const_section (); \ + } \ + else \ + const_section (); \ +} + +/* A C statement or statements to switch to the appropriate + section for output of RTX in mode MODE. RTX is some kind + of constant in RTL. The argument MODE is redundant except + in the case of a `const_int' rtx. Currently, these always + go into the const section. */ + +#undef SELECT_RTX_SECTION +#define SELECT_RTX_SECTION(MODE,RTX) const_section() + +/* Define the strings used for the special svr4 .type and .size directives. + These strings generally do not vary from one system running svr4 to + another, but if a given system (e.g. m88k running svr) needs to use + different pseudo-op names for these, they may be overridden in the + file which includes this one. */ + +#define TYPE_ASM_OP ".type" +#define SIZE_ASM_OP ".size" + +/* This is how we tell the assembler that a symbol is weak. */ + +#define ASM_WEAKEN_LABEL(FILE,NAME) \ + do { fputs ("\t.weak\t", FILE); assemble_name (FILE, NAME); \ + fputc ('\n', FILE); } while (0) + +/* The following macro defines the format used to output the second + operand of the .type assembler directive. Different svr4 assemblers + expect various different forms for this operand. The one given here + is just a default. You may need to override it in your machine- + specific tm.h file (depending upon the particulars of your assembler). */ + +#define TYPE_OPERAND_FMT "@%s" + +/* Write the extra assembler code needed to declare a function's result. + Most svr4 assemblers don't require any special declaration of the + result value, but there are exceptions. */ + +#ifndef ASM_DECLARE_RESULT +#define ASM_DECLARE_RESULT(FILE, RESULT) +#endif + +/* These macros generate the special .type and .size directives which + are used to set the corresponding fields of the linker symbol table + entries in an ELF object file under SVR4. These macros also output + the starting labels for the relevant functions/objects. */ + +/* Write the extra assembler code needed to declare a function properly. + Some svr4 assemblers need to also have something extra said about the + function's return value. We allow for that here. */ + +#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \ + do { \ + fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \ + assemble_name (FILE, NAME); \ + putc (',', FILE); \ + fprintf (FILE, TYPE_OPERAND_FMT, "function"); \ + putc ('\n', FILE); \ + ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \ + ASM_OUTPUT_LABEL(FILE, NAME); \ + } while (0) + +/* Write the extra assembler code needed to declare an object properly. */ + +#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \ + do { \ + fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \ + assemble_name (FILE, NAME); \ + putc (',', FILE); \ + fprintf (FILE, TYPE_OPERAND_FMT, "object"); \ + putc ('\n', FILE); \ + size_directive_output = 0; \ + if (!flag_inhibit_size_directive && DECL_SIZE (DECL)) \ + { \ + size_directive_output = 1; \ + fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \ + assemble_name (FILE, NAME); \ + fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \ + } \ + 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 { \ + 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, "\t%s\t ", SIZE_ASM_OP); \ + assemble_name (FILE, name); \ + fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \ + } \ + } while (0) + +/* This is how to declare the size of a function. */ + +#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, "\t%s\t ", SIZE_ASM_OP); \ + assemble_name (FILE, (FNAME)); \ + fprintf (FILE, ","); \ + assemble_name (FILE, label); \ + fprintf (FILE, "-"); \ + assemble_name (FILE, (FNAME)); \ + putc ('\n', FILE); \ + } \ + } while (0) + +/* 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 ".string" + +/* 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 unsigned char *_limited_str = (unsigned char *) (STR); \ + register unsigned ch; \ + fprintf ((FILE), "\t%s\t\"", 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 unsigned char *_ascii_bytes = (unsigned char *) (STR); \ + register unsigned char *limit = _ascii_bytes + (LENGTH); \ + register unsigned bytes_in_chunk = 0; \ + for (; _ascii_bytes < limit; _ascii_bytes++) \ + { \ + register 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) <= 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), "\t%s\t\"", 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) + +/* All SVR4 targets use the ELF object file format. */ +#define OBJECT_FORMAT_ELF |