Entire file is new except for defining MD_STARTFILE_PREFIX.

From-SVN: r1670

gcc/config/sparc/sol2.h

-/* Target definitions for GNU compiler for Sparc running Solaris 2.x
-   Copyright (C) 1992 Free Software Foundation, Inc.
-
-   Written by Ron Guilmette (rfg@ncd.com).
+/* Definitions of target machine for GNU compiler, for SPARC running Solaris 2
+   Copyright 1992 Free Software Foundation, Inc.
+   Contributed by Ron Guilmette (rfg@ncd.com) and
+   David V. Henkel-Wallace (gumby@cygnus.com).
 
 This file is part of GNU CC.
 
@@ -19,17 +19,151 @@ 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.  */
 
-/* This is basically just a Sparc running svr4.  */
+#define NO_UNDERSCORES 1
 
+/* Supposedly the same as vanilla sparc svr4, except for the stuff below: */
 #include "sparcv4.h"
 
-/* Solaris 2.x on a Sparc uses BSD stabs, not DWARF.  */
+#undef CPP_PREDEFINES
+#define CPP_PREDEFINES \
+ "-Dsun -Dsparc -Dunix -D__svr4__ -Asystem(unix) -Acpu(sparc) -Amachine(sparc)"
+
+/* The sun bundled assembler doesn't accept -Yd, (and neither does gas).
+   It's safe to pass -s always, even if -g is not used. */
+#undef ASM_SPEC
+#define ASM_SPEC \
+  "%{V} %{v:%{!V:-V}} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Wa,*:%*} -s"
+
+/* However it appears that Solaris 2.0 uses the same reg numbering as
+   the old BSD-style system did. */
+
+#undef DBX_REGISTER_NUMBER
+/* Same as sparc.h */
+#define DBX_REGISTER_NUMBER(REGNO) (REGNO)
+
+#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
+
+#define DBX_BLOCKS_FUNCTION_RELATIVE 1
+
+/* "gcc2_compiled." must be a .stabs, not an ordinary symbol, or GDB won't
+   see it.  Furthermore, since GDB reads the input piecemeal, starting
+   with each N_SO, it's a lot easier if the gcc2 flag symbol is *after*
+   the N_SO rather than before it.  So we emit an N_OPT stab here.  */
+
+#define ASM_IDENTIFY_GCC(FILE)	/* Do nothing */
+
+#define ASM_IDENTIFY_GCC_AFTER_SOURCE(FILE)	\
+ fputs ("\t.stabs\t\"gcc2_compiled.\", 0x3c, 0, 0, 0\n", FILE)
+
+#undef CTORS_SECTION_ASM_OP
+#undef DTORS_SECTION_ASM_OP
+
+#if 0 /* These seems unnecessary; the ones in sparcv4.h look right.  */
+#undef TEXT_SECTION_ASM_OP
+#undef DATA_SECTION_ASM_OP
+#undef BSS_SECTION_ASM_OP
+#undef CONST_SECTION_ASM_OP
+#undef INIT_SECTION_ASM_OP
+
+#define TEXT_SECTION_ASM_OP	"\t.section\t\".text\""
+#define DATA_SECTION_ASM_OP	"\t.section\t\".data\""
+#define BSS_SECTION_ASM_OP	"\t.section\t\".bss\""
+
+#define CONST_SECTION_ASM_OP	"\t.section\t\".rodata\""
+#define INIT_SECTION_ASM_OP	"\t.section\t\".init\""
+#endif
+
+#define CTORS_SECTION_ASM_OP	"\t.section\t\".ctors\",#alloc,#execinstr\n"
+#define DTORS_SECTION_ASM_OP	"\t.section\t\".dtors\",#alloc,#execinstr\n"
+
+/* The Solaris 2 assembler doesn't support the .string directive,
+   so disable it. */
 
-#undef DWARF_DEBUGGING_INFO
-#define DBX_DEBUGGING_INFO
+/* This doesn't work, despite the comment in svr4.h:
+#undef STRING_LIMIT
+#define STRING_LIMIT 0
+*/
+
+#undef ASM_OUTPUT_ASCII
+#define ASM_OUTPUT_DWARF_STRING(FILE,P) assemble_string(FILE, P)
+
+/* The Solaris 2 assembler uses .skip, not .zero, so put this back. */
+#undef ASM_OUTPUT_SKIP
+#define ASM_OUTPUT_SKIP(FILE,SIZE)  \
+  fprintf (FILE, "\t.skip %u\n", (SIZE))
+
+#undef ASM_OUTPUT_ALIGNED_LOCAL
+#define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN)		\
+do {									\
+  fputs ("\t.local\t", (FILE));		\
+  assemble_name ((FILE), (NAME));					\
+  putc ('\n', (FILE));							\
+  ASM_OUTPUT_ALIGNED_COMMON (FILE, NAME, SIZE, ALIGN);			\
+} while (0)
+
+#undef COMMON_ASM_OP
+#define COMMON_ASM_OP "\t.common"
+
+/* This is how to output a definition of an internal numbered label where
+   PREFIX is the class of label and NUM is the number within the class.  */
+
+#undef  ASM_OUTPUT_INTERNAL_LABEL
+#define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM)	\
+  fprintf (FILE, ".L%s%d:\n", PREFIX, NUM)
+
+/* This is how to output a reference to an internal numbered label where
+   PREFIX is the class of label and NUM is the number within the class.  */
+
+#undef  ASM_OUTPUT_INTERNAL_LABELREF
+#define ASM_OUTPUT_INTERNAL_LABELREF(FILE,PREFIX,NUM)	\
+  fprintf (FILE, ".L%s%d", PREFIX, NUM)
+
+/* 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'.  */
+
+#undef  ASM_GENERATE_INTERNAL_LABEL
+#define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)	\
+  sprintf (LABEL, "*.L%s%d", PREFIX, NUM)
+
+/* in Solaris 2.0, linenos are relative to the current fn. */
+#undef  ASM_OUTPUT_SOURCE_LINE
+#define ASM_OUTPUT_SOURCE_LINE(file, line)		\
+  { static int sym_lineno = 1;				\
+    fprintf (file, ".stabn 68,0,%d,.LM%d-%s\n.LM%d:\n",	\
+	     line, sym_lineno, 				\
+	     IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl)),\
+	     sym_lineno);				\
+    sym_lineno += 1; }
+
+/* But, to make this work, we have to output the stabs for the function
+   name *first*...  */
+#define	DBX_FUNCTION_FIRST
+
+
+/* We don't use the standard svr4 STARTFILE_SPEC because it's wrong for us.
+   We don't use the standard LIB_SPEC only because we don't yet support c++ */
 
 /* If we cannot find the GNU *crt*.o files in the STANDARD_STARTFILE_PREFIX
    directory, our fallback strategy must be to look for these files instead
    in the Sun C 2.0 directory.  */
 
-#define MD_STARTFILE_PREFIX_1	"/opt/SUNWste/SC2.0/"
+#undef MD_STARTFILE_PREFIX
+#define MD_STARTFILE_PREFIX "/opt/SUNWste/SC2.0/"
+
+#undef	STARTFILE_SPEC
+#define STARTFILE_SPEC "%{!shared: \
+			 %{!symbolic: \
+			  %{pg:crt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}} \
+			  %{pg:gmon.o%s} \
+			  %{pg:crti.o%s}%{!pg:crti.o%s} \
+			  %{ansi:/usr/ccs/lib/values-Xc.o%s} \
+			  %{!ansi: \
+			   %{traditional:/usr/ccs/lib/values-Xt.o%s} \
+			   %{!traditional:/usr/ccs/lib/values-Xa.o%s}}}}"
+
+#undef	LIB_SPEC
+#define LIB_SPEC \
+  "%{!shared:%{!symbolic:-lc}} \
+  %{!shared:%{!symbolic:%{pg:crtn.o%s}%{!pg:crtn.o%s}}}"