llvm dev - Jun 2008 - [LLVMdev] lli/JIT missing libgcc symbols on Mingw32/x86

Hello,

I have a bytecode doing 64 bits division and on Mingw32/x86, lli
complains it cannot resolve __udivdi3 when running it. 

Those symbols are all part of libgcc and all present in lli, but they
cannot be found by SearchForAddressOfSymbol (not in any DLL). To
workaround that, I explicitely define them in Win32/DynamicLibrary.inc
if the current target is Mingw32 (patch attached).

Anybody had this problem before ? Is this a proper fix ?

Thanks,
Julien

-- 
Julien Lerouge
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-------------- next part --------------
Index: lib/System/Win32/DynamicLibrary.inc
==================================================================---
lib/System/Win32/DynamicLibrary.inc	(revision 51993)
+++ lib/System/Win32/DynamicLibrary.inc	(working copy)
@@ -134,6 +134,21 @@
   #if defined(__MINGW32__)
     EXPLICIT_SYMBOL_DEF(_alloca);
     EXPLICIT_SYMBOL_DEF(__main);
+    EXPLICIT_SYMBOL_DEF(__ashldi3);
+    EXPLICIT_SYMBOL_DEF(__ashrdi3);
+    EXPLICIT_SYMBOL_DEF(__cmpdi2);
+    EXPLICIT_SYMBOL_DEF(__divdi3);
+    EXPLICIT_SYMBOL_DEF(__eprintf);
+    EXPLICIT_SYMBOL_DEF(__fixdfdi);
+    EXPLICIT_SYMBOL_DEF(__fixsfdi);
+    EXPLICIT_SYMBOL_DEF(__fixunsdfdi);
+    EXPLICIT_SYMBOL_DEF(__fixunssfdi);
+    EXPLICIT_SYMBOL_DEF(__floatdidf);
+    EXPLICIT_SYMBOL_DEF(__floatdisf);
+    EXPLICIT_SYMBOL_DEF(__lshrdi3);
+    EXPLICIT_SYMBOL_DEF(__moddi3);
+    EXPLICIT_SYMBOL_DEF(__udivdi3);
+    EXPLICIT_SYMBOL_DEF(__umoddi3);
   #elif defined(_MSC_VER)
     EXPLICIT_SYMBOL_DEF(_alloca_probe);
   #endif
@@ -157,6 +172,21 @@
   {
     EXPLICIT_SYMBOL(_alloca);
     EXPLICIT_SYMBOL(__main);
+    EXPLICIT_SYMBOL(__ashldi3);
+    EXPLICIT_SYMBOL(__ashrdi3);
+    EXPLICIT_SYMBOL(__cmpdi2);
+    EXPLICIT_SYMBOL(__divdi3);
+    EXPLICIT_SYMBOL(__eprintf);
+    EXPLICIT_SYMBOL(__fixdfdi);
+    EXPLICIT_SYMBOL(__fixsfdi);
+    EXPLICIT_SYMBOL(__fixunsdfdi);
+    EXPLICIT_SYMBOL(__fixunssfdi);
+    EXPLICIT_SYMBOL(__floatdidf);
+    EXPLICIT_SYMBOL(__floatdisf);
+    EXPLICIT_SYMBOL(__lshrdi3);
+    EXPLICIT_SYMBOL(__moddi3);
+    EXPLICIT_SYMBOL(__udivdi3);
+    EXPLICIT_SYMBOL(__umoddi3);
 
     EXPLICIT_SYMBOL2(alloca, _alloca);
 #undef EXPLICIT_SYMBOL

On Jun 5, 2008, at 3:32 PM, Julien Lerouge wrote:
> Hello,
>
> I have a bytecode doing 64 bits division and on Mingw32/x86, lli
> complains it cannot resolve __udivdi3 when running it.
>
> Those symbols are all part of libgcc and all present in lli, but they
> cannot be found by SearchForAddressOfSymbol (not in any DLL). To
> workaround that, I explicitely define them in Win32/DynamicLibrary.inc
> if the current target is Mingw32 (patch attached).
This patch looks fine to me, but I'm not a Mingw person.  Anton, does  
this look good to you?  If so, please apply.

-Chris