MPI: Fix compilation on MIPS with GCC 4.4 and newer (a3cea989) · Commits · 戴 / test

Since 4.4 GCC on MIPS no longer recognizes the "h" constraint, leading to this build failure: CC lib/mpi/generic_mpih-mul1.o lib/mpi/generic_mpih-mul1.c: In function 'mpihelp_mul_1': lib/mpi/generic_mpih-mul1.c:50:3: error: impossible constraint in 'asm' This patch updates MPI with the latest umul_ppm implementations for MIPS. Signed-off-by:

Manuel Lauss <manuel.lauss@gmail.com> Cc: Linux-MIPS <linux-mips@linux-mips.org> Cc: Dmitry Kasatkin <dmitry.kasatkin@intel.com> Cc: James Morris <jmorris@namei.org> Patchwork: https://patchwork.linux-mips.org/patch/4612/ Signed-off-by:

Ralf Baechle <ralf@linux-mips.org>

lib/mpi/longlong.h

+17 −2

Original line number	Diff line number	Diff line
		@@ -641,7 +641,14 @@ do { \
		************ MIPS ***************
		***************************************/
		#if defined(__mips__) && W_TYPE_SIZE == 32
		#if __GNUC__ > 2 \|\| __GNUC_MINOR__ >= 7
		#if __GNUC__ >= 4 && __GNUC_MINOR__ >= 4
		#define umul_ppmm(w1, w0, u, v) \
		do { \
		UDItype __ll = (UDItype)(u) * (v); \
		w1 = __ll >> 32; \
		w0 = __ll; \
		} while (0)
		#elif __GNUC__ > 2 \|\| __GNUC_MINOR__ >= 7
		#define umul_ppmm(w1, w0, u, v) \
		__asm__ ("multu %2,%3" \
		: "=l" ((USItype)(w0)), \
		@@ -666,7 +673,15 @@ do { \
		************ MIPS/64 ************
		***************************************/
		#if (defined(__mips) && __mips >= 3) && W_TYPE_SIZE == 64
		#if __GNUC__ > 2 \|\| __GNUC_MINOR__ >= 7
		#if __GNUC__ >= 4 && __GNUC_MINOR__ >= 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)
		#elif __GNUC__ > 2 \|\| __GNUC_MINOR__ >= 7
		#define umul_ppmm(w1, w0, u, v) \
		__asm__ ("dmultu %2,%3" \
		: "=l" ((UDItype)(w0)), \

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