Package: sprng
Version: 2.0a-6
Severity: serious
Tags: patch
Since GCC 4.4 it's not possible anymore to use the 'h' constraints for
MIPS inline assembly code when doing a multiplication. That's why sprng
fails to build from source on mips and mipsel.
That said GCC supports 32x32 => 64 multiplication on 32-bit architecture
for a lot of time, so there is no need to use assembly code for that.
The patch below fixes the problem by using standard multiplication
instead of assembly code.
diff -u sprng-2.0a/SRC/pmlcg/longlong.h sprng-2.0a/SRC/pmlcg/longlong.h
--- sprng-2.0a/SRC/pmlcg/longlong.h
+++ sprng-2.0a/SRC/pmlcg/longlong.h
@@ -701,23 +701,12 @@
#endif /* __m88000__ */
#if defined (__mips__) && W_TYPE_SIZE == 32
-#if __GNUC__ > 2 || __GNUC_MINOR__ >= 7
-#define umul_ppmm(w1, w0, u, v) \
- __asm__ ("multu %2,%3" \
- : "=l" ((USItype)(w0)), \
- "=h" ((USItype)(w1)) \
- : "d" ((USItype)(u)), \
- "d" ((USItype)(v)))
-#else
-#define umul_ppmm(w1, w0, u, v) \
- __asm__ ("multu %2,%3"
- "\n mflo %0"
- "\n mfhi %1" \
- : "=d" ((USItype)(w0)), \
- "=d" ((USItype)(w1)) \
- : "d" ((USItype)(u)), \
- "d" ((USItype)(v)))
-#endif
+#define umul_ppmm(w1, w0, u, v) \
+ do { \
+ UDItype __x = (UDItype) (USItype) (u) * (USItype) (v); \
+ (w1) = (USItype) (__x >> 32); \
+ (w0) = (USItype) (__x); \
+ } while (0)
#define UMUL_TIME 10
#define UDIV_TIME 100
#endif /* __mips__ */
-- System Information:
Debian Release: wheezy/sid
APT prefers unstable
APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: mips (mips64)
Kernel: Linux 2.6.32-5-5kc-malta
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
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