Bug #69978 Fails to build on mips64(el)

• Submitted: 10 Aug 2013 3:31
• Modified: 4 Aug 2014 11:25
• Reporter: Clint Byrum
• Status: Verified
• Category: MySQL Server: Compiling
• Severity: S3 (Non-critical)
• Version: 5.5.31, 5.6.20
• OS: Linux (Debian 7.0)
• CPU Architecture: Any

[10 Aug 2013 3:31] Clint Byrum

Description:
This was originally reported in Debian. The embedded yassl encryption library fails to build on mips:

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=719196

How to repeat:
* Compile mysql 5.5.31 on Debian 7.0 with embedded yaSSL.

Suggested fix:
1 character fix

http://stackoverflow.com/questions/3652153/impossible-constraint-in-asm

Index: mysql-5.5/extra/yassl/taocrypt/src/integer.cpp
===================================================================
--- mysql-5.5.orig/extra/yassl/taocrypt/src/integer.cpp	2013-08-08 18:22:54.008293778 +0800
+++ mysql-5.5/extra/yassl/taocrypt/src/integer.cpp	2013-08-08 19:22:53.416259452 +0800
@@ -192,7 +192,7 @@
                 "a" (a), "rm" (b) : "cc");
 
         #elif defined(__mips64)
-            __asm__("dmultu %2,%3" : "=h" (r.halfs_.high), "=l" (r.halfs_.low)
+            __asm__("dmultu %2,%3" : "=d" (r.halfs_.high), "=lc" (r.halfs_.low)
                 : "r" (a), "r" (b));
 
         #elif defined(_M_IX86)

[12 Aug 2013 13:34] Todd Farmer

Thanks for the bug report, Clint.  I can't immediately verify the bug (due to lack of access to MIPS platform), but will work to do so shortly.