From 849e4b12d62e87f11277916cea92573fc3eaab9a Mon Sep 17 00:00:00 2001
From: Michael Brown
Date: Tue, 18 Nov 2008 16:37:15 -0800
Subject: [libgcc] Make __libgcc architecture-specific

---
 src/arch/i386/include/bits/compiler.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'src/arch')

diff --git a/src/arch/i386/include/bits/compiler.h b/src/arch/i386/include/bits/compiler.h
index af796069f..119a9a21d 100644
--- a/src/arch/i386/include/bits/compiler.h
+++ b/src/arch/i386/include/bits/compiler.h
@@ -6,6 +6,20 @@
 /** Declare a function with standard calling conventions */
 #define __asmcall __attribute__ (( cdecl, regparm(0) ))
 
+/**
+ * Declare a function with libgcc implicit linkage
+ *
+ * It seems as though gcc expects its implicit arithmetic functions to
+ * be cdecl, even if -mrtd is specified.  This is somewhat
+ * inconsistent; for example, if -mregparm=3 is used then the implicit
+ * functions do become regparm(3).
+ *
+ * The implicit calls to memcpy() and memset() which gcc can generate
+ * do not seem to have this inconsistency; -mregparm and -mrtd affect
+ * them in the same way as any other function.
+ */
+#define __libgcc __attribute__ (( cdecl ))
+
 #endif /* ASSEMBLY */
 
 #endif /* _BITS_COMPILER_H */
-- 
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