From 19a7047927e52f8513266e1326e7f78497e0a907 Mon Sep 17 00:00:00 2001
From: Stan Cox <coxs@gnu.org>
Date: Fri, 17 May 1996 17:49:21 +0000
Subject: [PATCH] unix.h (ASM_OUTPUT_MI_THUNK): Define.

{att.h,bsd.h,sun386.h} (ASM_OUTPUT_MI_THUNK): Delete.

From-SVN: r12010
---
 gcc/config/i386/att.h    | 11 -----------
 gcc/config/i386/bsd.h    | 12 ------------
 gcc/config/i386/sun386.h | 11 -----------
 gcc/config/i386/unix.h   | 41 ++++++++++++++++++++++++++++++++++++++++
 4 files changed, 41 insertions(+), 34 deletions(-)

diff --git a/gcc/config/i386/att.h b/gcc/config/i386/att.h
index 3612cd2acfa..ef095b7a67f 100644
--- a/gcc/config/i386/att.h
+++ b/gcc/config/i386/att.h
@@ -93,14 +93,3 @@ do								\
 #define ASM_OUTPUT_LABELREF(FILE,NAME)	\
   fprintf (FILE, "%s", NAME)
 
-/* Output code to add DELTA to the first argument, and then jump to FUNCTION.
-   Used for C++ multiple inheritance.  */
-
-#define ASM_OUTPUT_MI_THUNK(FILE, THUNK_FNDECL, DELTA, FUNCTION)	   \
-do {									   \
-  fprintf (FILE, "\taddl $%d,%s\n\tjmp ", DELTA,			   \
-	 i386_regparm > 0 ? "%eax" : "4(%esp)");			   \
-  assemble_name (FILE, IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (FUNCTION))); \
-  fprintf (FILE, "\n");							   \
-} while (0)
-
diff --git a/gcc/config/i386/bsd.h b/gcc/config/i386/bsd.h
index 4f8bdfe1459..6bf7399dc31 100644
--- a/gcc/config/i386/bsd.h
+++ b/gcc/config/i386/bsd.h
@@ -123,18 +123,6 @@ Boston, MA 02111-1307, USA.  */
 #define ASM_OUTPUT_LABELREF(FILE,NAME) fprintf (FILE, "_%s", NAME)
 #endif /* not NO_UNDERSCORES */
 
-/* Output code to add DELTA to the first argument, and then jump to FUNCTION.
-   Used for C++ multiple inheritance.  */
-
-#define ASM_OUTPUT_MI_THUNK(FILE, THUNK_FNDECL, DELTA, FUNCTION)	   \
-do {									   \
-  fprintf (FILE, "\taddl $%d,%s\n\tjmp ", DELTA,			   \
-	 i386_regparm > 0 ? "%eax" : "4(%esp)");			   \
-  assemble_name (FILE, IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (FUNCTION))); \
-  fprintf (FILE, "\n");							   \
-} while (0)
-
-
 /* Sequent has some changes in the format of DBX symbols.  */
 #define DBX_NO_XREFS 1
 
diff --git a/gcc/config/i386/sun386.h b/gcc/config/i386/sun386.h
index 0046e740324..6e2680789bd 100644
--- a/gcc/config/i386/sun386.h
+++ b/gcc/config/i386/sun386.h
@@ -141,14 +141,3 @@ do								\
 
 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM)	\
   fprintf (FILE, ".%s%d:\n", PREFIX, NUM)
-
-/* Output code to add DELTA to the first argument, and then jump to FUNCTION.
-   Used for C++ multiple inheritance.  */
-
-#define ASM_OUTPUT_MI_THUNK(FILE, THUNK_FNDECL, DELTA, FUNCTION)	   \
-do {									   \
-  fprintf (FILE, "\taddl $%d,%s\n\tjmp ", DELTA,			   \
-	 i386_regparm > 0 ? "%eax" : "4(%esp)");			   \
-  assemble_name (FILE, IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (FUNCTION))); \
-  fprintf (FILE, "\n");							   \
-} while (0)
diff --git a/gcc/config/i386/unix.h b/gcc/config/i386/unix.h
index f38fe270d89..237ff9a6423 100644
--- a/gcc/config/i386/unix.h
+++ b/gcc/config/i386/unix.h
@@ -146,3 +146,44 @@ Boston, MA 02111-1307, USA.  */
 #define FUNCTION_VALUE_REGNO_P(N) \
   ((N) == 0 || ((N)== FIRST_FLOAT_REG && TARGET_FLOAT_RETURNS_IN_80387))
 
+/* Output code to add DELTA to the first argument, and then jump to FUNCTION.
+   Used for C++ multiple inheritance.  */
+#define ASM_OUTPUT_MI_THUNK(FILE, THUNK_FNDECL, DELTA, FUNCTION)	  \
+do {									  \
+  tree parm;								  \
+									  \
+  if (i386_regparm > 0)							  \
+    parm = TYPE_ARG_TYPES (TREE_TYPE (function));			  \
+  else									  \
+    parm = NULL_TREE;							  \
+  for (; parm; parm = TREE_CHAIN (parm))				  \
+    if (TREE_VALUE (parm) == void_type_node)				  \
+      break;								  \
+  fprintf (FILE, "\taddl $%d,%s\n", DELTA, parm ? "%eax" : "4(%esp)");	  \
+									  \
+  if (flag_pic)								  \
+    {									  \
+      rtx xops[2];							  \
+      xops[0] = pic_offset_table_rtx;					  \
+      xops[1] = (rtx) gen_label_rtx ();					  \
+									  \
+      if (i386_regparm > 2)						  \
+	abort ();							  \
+      output_asm_insn ("push%L0 %0", xops);				  \
+      output_asm_insn (AS1 (call,%P1), xops);				  \
+      ASM_OUTPUT_INTERNAL_LABEL (FILE, "L", CODE_LABEL_NUMBER (xops[1])); \
+      output_asm_insn (AS1 (pop%L0,%0), xops);				  \
+      output_asm_insn ("addl $_GLOBAL_OFFSET_TABLE_+[.-%P1],%0", xops);	  \
+      fprintf (FILE, "\tmovl ");					  \
+      assemble_name							  \
+	(FILE, IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (FUNCTION)));	  \
+      fprintf (FILE, "@GOT(%%ebx),%%ecx\n\tpopl %%ebx\n\tjmp *%%ecx\n");  \
+    }									  \
+  else									  \
+    {									  \
+      fprintf (FILE, "\tjmp ");						  \
+      assemble_name							  \
+	(FILE, IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (FUNCTION)));	  \
+      fprintf (FILE, "\n");						  \
+    }									  \
+} while (0)