From 2eba9bcd51e79547c906b20cf63033f7c2bf1aac Mon Sep 17 00:00:00 2001
From: Peter Wemm <peter@FreeBSD.org>
Date: Fri, 29 Aug 1997 06:11:52 +0000
Subject: [PATCH] Merge in some of my changes with John's.  I've used this to
 build an ELF system.  I'm not sure about some of the things here.  We
 definately need to go back and rationalize this.

---
 contrib/gcc/config/i386/freebsd-elf.h | 82 ++++++++++++++++-----------
 1 file changed, 50 insertions(+), 32 deletions(-)

diff --git a/contrib/gcc/config/i386/freebsd-elf.h b/contrib/gcc/config/i386/freebsd-elf.h
index f69d57f424bf..061d595e0345 100644
--- a/contrib/gcc/config/i386/freebsd-elf.h
+++ b/contrib/gcc/config/i386/freebsd-elf.h
@@ -31,10 +31,20 @@ Boston, MA 02111-1307, USA.  */
 #undef TARGET_VERSION
 #define TARGET_VERSION fprintf (stderr, " (i386 FreeBSD/ELF)");
 
+#define MASK_PROFILER_EPILOGUE	010000000000
+
+#define TARGET_PROFILER_EPILOGUE	(target_flags & MASK_PROFILER_EPILOGUE)
+
+#undef	SUBTARGET_SWITCHES
+#define SUBTARGET_SWITCHES					\
+     { "profiler-epilogue",	 MASK_PROFILER_EPILOGUE},	\
+     { "no-profiler-epilogue",	-MASK_PROFILER_EPILOGUE},
+
 /* The svr4 ABI for the i386 says that records and unions are returned
    in memory.  */
+/* On FreeBSD, we do not. */
 #undef DEFAULT_PCC_STRUCT_RETURN
-#define DEFAULT_PCC_STRUCT_RETURN 1
+#define DEFAULT_PCC_STRUCT_RETURN 0
 
 /* This is how to output an element of a case-vector that is relative.
    This is only used for PIC code.  See comments by the `casesi' insn in
@@ -115,22 +125,30 @@ Boston, MA 02111-1307, USA.  */
  : ((n) >= FIRST_STACK_REG && (n) <= LAST_STACK_REG) ? (n)+3 \
  : (-1))
 
+/* Tell final.c that we don't need a label passed to mcount.  */
+#define NO_PROFILE_DATA
+
 /* Output assembler code to FILE to increment profiler label # LABELNO
    for profiling a function entry.  */
+/* Redefine this to not pass an unused label in %edx.  */
 
 #undef FUNCTION_PROFILER
 #define FUNCTION_PROFILER(FILE, LABELNO)  \
 {									\
   if (flag_pic)								\
-    {									\
-      fprintf (FILE, "\tleal %sP%d@GOTOFF(%%ebx),%%edx\n",		\
-	       LPREFIX, (LABELNO));					\
-      fprintf (FILE, "\tcall *mcount@GOT(%%ebx)\n");			\
-    }									\
+    fprintf (FILE, "\tcall *mcount@GOT(%%ebx)\n");			\
   else									\
+    fprintf (FILE, "\tcall mcount\n");					\
+}
+
+#define FUNCTION_PROFILER_EPILOGUE(FILE)  \
+{									\
+  if (TARGET_PROFILER_EPILOGUE)						\
     {									\
-      fprintf (FILE, "\tmovl $%sP%d,%%edx\n", LPREFIX, (LABELNO));	\
-      fprintf (FILE, "\tcall mcount\n");				\
+      if (flag_pic)							\
+	fprintf (FILE, "\tcall *mexitcount@GOT(%%ebx)\n");		\
+      else								\
+	fprintf (FILE, "\tcall mexitcount\n");				\
     }									\
 }
 
@@ -142,7 +160,9 @@ Boston, MA 02111-1307, USA.  */
   
 #undef WCHAR_TYPE
 #define WCHAR_TYPE "int"
-   
+ 
+#define WCHAR_UNSIGNED 0
+
 #undef WCHAR_TYPE_SIZE
 #define WCHAR_TYPE_SIZE BITS_PER_WORD
 
@@ -189,26 +209,14 @@ Boston, MA 02111-1307, USA.  */
 
 #undef CPP_SPEC
 #if TARGET_CPU_DEFAULT == 2
-#define CPP_SPEC "%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{!m386:-D__i486__} %{posix:-D_POSIX_SOURCE}"
+#define CPP_SPEC "%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{!m386:-D__i486__}"
 #else
-#define CPP_SPEC "%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{m486:-D__i486__} %{posix:-D_POSIX_SOURCE}"
+#define CPP_SPEC "%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{m486:-D__i486__}"
 #endif
 
-#undef	LIB_SPEC
-#if 1
-/* We no longer link with libc_p.a or libg.a by default. If you
- * want to profile or debug the C library, please add
- * -lc_p or -ggdb to LDFLAGS at the link time, respectively.
- */
-#define LIB_SPEC \
-  "%{!shared: %{mieee-fp:-lieee} %{p:-lgmon} %{pg:-lgmon} \
-     %{!ggdb:%{{!pthread:-lc}%{pthread:-lc_r}}} %{ggdb:-lg}}"
-#else
-#define LIB_SPEC \
-  "%{!shared: \
-     %{mieee-fp:-lieee} %{p:-lgmon -lc_p} %{pg:-lgmon -lc_p} \
-       %{!p:%{!pg:%{!g*:-lc} %{g*:-lg}}}}"
-#endif
+/* Like the default, except no -lg, and no -p.  */
+#undef LIB_SPEC
+#define LIB_SPEC "%{!shared:%{!pg:%{!pthread:-lc}%{pthread:-lc_r}}%{pg:%{!pthread:-lc_p}%{pthread:-lc_r_p}}}"
 
 /* Provide a LINK_SPEC appropriate for FreeBSD.  Here we provide support
    for the special GCC options -static and -shared, which allow us to
@@ -225,13 +233,23 @@ Boston, MA 02111-1307, USA.  */
    done.  */
 
 #undef	LINK_SPEC
-#define LINK_SPEC "-m elf_i386 %{shared:-shared} \
+#define LINK_SPEC \
+ "-m elf_i386 -L/usr/lib %{shared:-shared} \
   %{!shared: \
-    %{!ibcs: \
-      %{!static: \
-	%{rdynamic:-export-dynamic} \
-	%{!dynamic-linker:-dynamic-linker /usr/libexec/ld-elf.so.1}} \
-	%{static:-static}}}"
+    %{!static: \
+      %{rdynamic:-export-dynamic} \
+      %{!dynamic-linker:-dynamic-linker /usr/libexec/ld-elf.so.1}} \
+     %{static:-static}}"
 
 /* Get perform_* macros to build libgcc.a.  */
 #include "i386/perform.h"
+
+#define LINK_LIBGCC_SPECIAL_1	1
+
+/* This goes away when the math emulator is fixed.  */
+#undef TARGET_DEFAULT
+#define TARGET_DEFAULT	(MASK_NO_FANCY_MATH_387 | 0301)
+
+#define HAVE_ATEXIT
+#define HAVE_PUTENV
+