-/* svr4.h -- operating system specific defines to be used when
- targeting GCC for some generic System V Release 4 system.
- Copyright (C) 1991, 1994, 1995 Free Software Foundation, Inc.
- Contributed by Ron Guilmette (rfg@netcom.com).
+/* Operating system specific defines to be used when targeting GCC for some
+ generic System V Release 4 system.
+ Copyright (C) 1991, 1994, 1995, 1996 Free Software Foundation, Inc.
+ Contributed by Ron Guilmette (rfg@monkeys.com).
This file is part of GNU CC.
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, 675 Mass Ave, Cambridge, MA 02139, USA.
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.
To use this file, make up a file with a name like:
thing as a -T option for svr4. */
#define SWITCH_TAKES_ARG(CHAR) \
- ( (CHAR) == 'D' \
- || (CHAR) == 'U' \
- || (CHAR) == 'o' \
- || (CHAR) == 'e' \
- || (CHAR) == 'u' \
- || (CHAR) == 'I' \
- || (CHAR) == 'm' \
- || (CHAR) == 'L' \
- || (CHAR) == 'A' \
+ (DEFAULT_SWITCH_TAKES_ARG (CHAR) \
|| (CHAR) == 'h' \
+ || (CHAR) == 'x' \
|| (CHAR) == 'z')
/* This defines which multi-letter switches take arguments. On svr4,
/* Provide an ASM_SPEC appropriate for svr4. Here we try to support as
many of the specialized svr4 assembler options as seems reasonable,
given that there are certain options which we can't (or shouldn't)
- support directly due to the fact that they conflict with other options
+ support directly due to the fact that they conflict with other options
for other svr4 tools (e.g. ld) or with other options for GCC itself.
For example, we don't support the -o (output file) or -R (remove
input file) options because GCC already handles these things. We
#undef ASM_SPEC
#define ASM_SPEC \
- "%{V} %{v:%{!V:-V}} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*}"
+ "%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*}"
/* svr4 assemblers need the `-' (indicating input from stdin) to come after
the -o option (and its argument) for some reason. If we try to put it
messages. */
#undef ASM_FINAL_SPEC
-#define ASM_FINAL_SPEC "%{pipe:-}"
+#define ASM_FINAL_SPEC "%|"
/* Under svr4, the normal location of the `ld' and `as' programs is the
/usr/ccs/bin directory. */
+#ifndef CROSS_COMPILE
#undef MD_EXEC_PREFIX
#define MD_EXEC_PREFIX "/usr/ccs/bin/"
+#endif
/* Under svr4, the normal location of the various *crt*.o files is the
/usr/ccs/lib directory. */
+#ifndef CROSS_COMPILE
#undef MD_STARTFILE_PREFIX
#define MD_STARTFILE_PREFIX "/usr/ccs/lib/"
+#endif
/* Provide a LIB_SPEC appropriate for svr4. Here we tack on the default
standard C library (unless we are building a shared library). */
#undef LIB_SPEC
#define LIB_SPEC "%{!shared:%{!symbolic:-lc}}"
-/* Provide a LIBGCC_SPEC appropriate for svr4. We also want to exclude
- libgcc when -symbolic. */
-
-#undef LIBGCC_SPEC
-#define LIBGCC_SPEC "%{!shared:%{!symbolic:-lgcc}}"
-
/* Provide an ENDFILE_SPEC appropriate for svr4. Here we tack on our own
magical crtend.o file (see crtstuff.c) which provides part of the
support for getting C++ file-scope static object constructed before
which is either `gcrtn.o' or `crtn.o'. */
#undef ENDFILE_SPEC
-#define ENDFILE_SPEC "crtend.o%s %{pg:gcrtn.o}%{!pg:crtn.o%s}"
+#define ENDFILE_SPEC "crtend.o%s %{pg:gcrtn.o%s}%{!pg:crtn.o%s}"
/* Provide a LINK_SPEC appropriate for svr4. Here we provide support
for the special GCC options -static, -shared, and -symbolic which
not being done. */
#undef LINK_SPEC
-#define LINK_SPEC "%{h*} %{V} %{v:%{!V:-V}} \
+#ifdef CROSS_COMPILE
+#define LINK_SPEC "%{h*} %{v:-V} \
+ %{b} %{Wl,*:%*} \
+ %{static:-dn -Bstatic} \
+ %{shared:-G -dy -z text %{!h*:%{o*:-h %*}}} \
+ %{symbolic:-Bsymbolic -G -dy -z text %{!h*:%{o*:-h %*}}} \
+ %{G:-G} \
+ %{YP,*} \
+ %{Qy:} %{!Qn:-Qy}"
+#else
+#define LINK_SPEC "%{h*} %{v:-V} \
%{b} %{Wl,*:%*} \
%{static:-dn -Bstatic} \
- %{shared:-G -dy -z text} \
- %{symbolic:-Bsymbolic -G -dy -z text} \
+ %{shared:-G -dy -z text %{!h*:%{o*:-h %*}}} \
+ %{symbolic:-Bsymbolic -G -dy -z text %{!h*:%{o*:-h %*}}} \
%{G:-G} \
%{YP,*} \
%{!YP,*:%{p:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
%{!p:-Y P,/usr/ccs/lib:/usr/lib}} \
%{Qy:} %{!Qn:-Qy}"
+#endif
/* Gcc automatically adds in one of the files /usr/ccs/lib/values-Xc.o,
/usr/ccs/lib/values-Xa.o, or /usr/ccs/lib/values-Xt.o for each final
#define DWARF_DEBUGGING_INFO
+/* All ELF targets can support DWARF-2. */
+
+#define DWARF2_DEBUGGING_INFO
+
/* The numbers used to denote specific machine registers in the System V
Release 4 DWARF debugging information are quite likely to be totally
different from the numbers used in BSD stabs debugging information
#define DBX_DEBUGGING_INFO
+/* When generating stabs debugging, use N_BINCL entries. */
+
+#define DBX_USE_BINCL
+
/* Use DWARF debugging info by default. */
#ifndef PREFERRED_DEBUGGING_TYPE
do \
{ \
static int sym_lineno = 1; \
- fprintf (file, ".stabn 68,0,%d,.LM%d-%s\n.LM%d:\n", \
- line, sym_lineno, \
- XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0), \
- sym_lineno); \
+ fprintf (file, ".stabn 68,0,%d,.LM%d-", \
+ line, sym_lineno); \
+ assemble_name (file, \
+ XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0));\
+ fprintf (file, "\n.LM%d:\n", sym_lineno); \
sym_lineno += 1; \
} \
while (0)
#define DBX_FUNCTION_FIRST
+/* Generate a blank trailing N_SO to mark the end of the .o file, since
+ we can't depend upon the linker to mark .o file boundaries with
+ embedded stabs. */
+
+#define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME) \
+do \
+ { \
+ text_section (); \
+ fprintf (FILE, \
+ "\t.stabs \"\",%d,0,0,.Letext\n.Letext:\n", N_SO); \
+ } \
+while (0)
+
/* Define the actual types of some ANSI-mandated types. (These
definitions should work for most SVR4 systems). */
#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.
+/* The prefix to add to user-visible assembler symbols.
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)
+#undef USER_LABEL_PREFIX
+#define USER_LABEL_PREFIX ""
/* This is how to output an internal numbered label where
PREFIX is the class of label and NUM is the number within the class.
ASM_OUTPUT_ALIGNED_COMMON (FILE, NAME, SIZE, ALIGN); \
} while (0)
+/* Biggest alignment supported by the object file format of this
+ machine. Use this macro to limit the alignment which can be
+ specified using the `__attribute__ ((aligned (N)))' construct. If
+ not defined, the default value is `BIGGEST_ALIGNMENT'. */
+
+#define MAX_OFILE_ALIGNMENT (32768*8)
+
/* 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. */
} \
}
-/* Switch into a generic section.
- This is currently only used to support section attributes. */
-#define ASM_OUTPUT_SECTION_NAME(FILE, DECL, NAME) \
- fprintf (FILE, ".section\t%s,\"a\",@progbits\n", NAME)
+/*
+ * Switch into a generic section.
+ *
+ * We make the section read-only and executable for a function decl,
+ * read-only for a const data decl, and writable for a non-const data decl.
+ *
+ * If the section has already been defined, we must not
+ * emit the attributes here. The SVR4 assembler does not
+ * recognize section redefinitions.
+ * If DECL is NULL, no attributes are emitted.
+ */
+#define ASM_OUTPUT_SECTION_NAME(FILE, DECL, NAME) \
+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 && TREE_READONLY (DECL)) \
+ 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)
+
+/* A C statement (sans semicolon) to mark DECL to be emitted as a
+ public symbol such that extra copies in multiple translation units will
+ be discarded by the linker. */
+#define MAKE_DECL_ONE_ONLY(DECL) \
+do { \
+ int len; \
+ char *name, *string, *prefix; \
+ \
+ DECL_WEAK (DECL) = 1; \
+ \
+ name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL)); \
+ \
+ if (TREE_CODE (DECL) == FUNCTION_DECL) \
+ prefix = ".gnu.linkonce.t."; \
+ else if (TREE_READONLY (DECL)) \
+ 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 SELECT_SECTION(DECL,RELOC) \
{ \
- if (TREE_CODE (DECL) == STRING_CST) \
+ if (flag_pic && RELOC) \
+ data_section (); \
+ else if (TREE_CODE (DECL) == STRING_CST) \
{ \
if (! flag_writable_strings) \
const_section (); \
} \
else if (TREE_CODE (DECL) == VAR_DECL) \
{ \
- if ((flag_pic && RELOC) \
- || !TREE_READONLY (DECL) || TREE_SIDE_EFFECTS (DECL) \
+ if (!TREE_READONLY (DECL) || TREE_SIDE_EFFECTS (DECL) \
|| !DECL_INITIAL (DECL) \
|| (DECL_INITIAL (DECL) != error_mark_node \
&& !TREE_CONSTANT (DECL_INITIAL (DECL)))) \
#define TYPE_ASM_OP ".type"
#define SIZE_ASM_OP ".size"
-#define WEAK_ASM_OP ".weak"
+
+/* 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
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