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The MIPS port for GCC-4.4 no longer recognizes the h asm constraint.
Patch from: https://forum.openwrt.org/viewtopic.php?id=20520
--- libgcrypt/mpi/longlong.h-asdf 2009-08-04 09:58:51.000000000 +0930
+++ libgcrypt/mpi/longlong.h 2009-08-04 10:10:27.000000000 +0930
@@ -710,18 +710,35 @@
#endif /* __m88110__ */
#endif /* __m88000__ */
+/* Test for gcc >= maj.min, as per __GNUC_PREREQ in glibc */
+#if defined (__GNUC__) && defined (__GNUC_MINOR__)
+#define __GNUC_PREREQ(maj, min) \
+ ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
+#else
+#define __GNUC_PREREQ(maj, min) 0
+#endif
+
/***************************************
************** MIPS *****************
***************************************/
#if defined (__mips__) && W_TYPE_SIZE == 32
-#if __GNUC__ > 2 || __GNUC_MINOR__ >= 7
+#if __GNUC_PREREQ (4,4)
+#define umul_ppmm(w1, w0, u, v) \
+ do { \
+ UDItype __ll = (UDItype)(u) * (v); \
+ w1 = __ll >> 32; \
+ w0 = __ll; \
+ } while (0)
+#endif
+#if !defined (umul_ppmm) && __GNUC_PREREQ (2,7)
#define umul_ppmm(w1, w0, u, v) \
__asm__ ("multu %2,%3" \
: "=l" ((USItype)(w0)), \
"=h" ((USItype)(w1)) \
: "d" ((USItype)(u)), \
"d" ((USItype)(v)))
-#else
+#endif
+#if !defined (umul_ppmm)
#define umul_ppmm(w1, w0, u, v) \
__asm__ ("multu %2,%3 \n" \
"mflo %0 \n" \
@@ -739,14 +756,24 @@
************** MIPS/64 **************
***************************************/
#if (defined (__mips) && __mips >= 3) && W_TYPE_SIZE == 64
-#if __GNUC__ > 2 || __GNUC_MINOR__ >= 7
+#if __GNUC_PREREQ (4,4)
+#define umul_ppmm(w1, w0, u, v) \
+ do { \
+ typedef unsigned int __ll_UTItype __attribute__((mode(TI))); \
+ __ll_UTItype __ll = (__ll_UTItype)(u) * (v); \
+ w1 = __ll >> 64; \
+ w0 = __ll; \
+ } while (0)
+#endif
+#if !defined (umul_ppmm) && __GNUC_PREREQ (2,7)
#define umul_ppmm(w1, w0, u, v) \
__asm__ ("dmultu %2,%3" \
: "=l" ((UDItype)(w0)), \
"=h" ((UDItype)(w1)) \
: "d" ((UDItype)(u)), \
"d" ((UDItype)(v)))
-#else
+#endif
+#if !defined (umul_ppmm)
#define umul_ppmm(w1, w0, u, v) \
__asm__ ("dmultu %2,%3 \n" \
"mflo %0 \n" \
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