diff options
Diffstat (limited to 'mpi/longlong.h')
| -rw-r--r-- | mpi/longlong.h | 31 |
1 files changed, 14 insertions, 17 deletions
diff --git a/mpi/longlong.h b/mpi/longlong.h index d74055f89..c5c27b06c 100644 --- a/mpi/longlong.h +++ b/mpi/longlong.h @@ -200,28 +200,27 @@ extern UDItype __udiv_qrnnd (); "rI" ((USItype)(bh)), \ "r" ((USItype)(al)), \ "rI" ((USItype)(bl))) -#ifdef __ARM_ARCH_3__ -/* SAM This does not work on arm4 */ +#if defined __ARM_ARCH_2__ || defined __ARM_ARCH_3__ #define umul_ppmm(xh, xl, a, b) \ __asm__ ("%@ Inlined umul_ppmm - mov %|r0, %2, lsr #16 - mov %|r2, %3, lsr #16 - bic %|r1, %2, %|r0, lsl #16 - bic %|r2, %3, %|r2, lsl #16 - mul %1, %|r1, %|r2 - mul %|r2, %|r0, %|r2 - mul %|r1, %0, %|r1 - mul %0, %|r0, %0 - adds %|r1, %|r2, %|r1 - addcs %0, %0, #65536 - adds %1, %1, %|r1, lsl #16 - adc %0, %0, %|r1, lsr #16" \ + mov %|r0, %2, lsr #16 @ AAAA + mov %|r2, %3, lsr #16 @ BBBB + bic %|r1, %2, %|r0, lsl #16 @ aaaa + bic %0, %3, %|r2, lsl #16 @ bbbb + mul %1, %|r1, %|r2 @ aaaa * BBBB + mul %|r2, %|r0, %|r2 @ AAAA * BBBB + mul %|r1, %0, %|r1 @ aaaa * bbbb + mul %0, %|r0, %0 @ AAAA * bbbb + adds %|r0, %1, %0 @ central sum + addcs %|r2, %|r2, #65536 + adds %1, %|r1, %|r0, lsl #16 + adc %0, %|r2, %|r0, lsr #16" \ : "=&r" ((USItype)(xh)), \ "=r" ((USItype)(xl)) \ : "r" ((USItype)(a)), \ "r" ((USItype)(b)) \ : "r0", "r1", "r2") -#elif __ARM_ARCH_4__ +#else #define umul_ppmm(xh, xl, a, b) \ __asm__ ("%@ Inlined umul_ppmm umull %r1, %r0, %r2, %r3" \ @@ -230,8 +229,6 @@ extern UDItype __udiv_qrnnd (); : "r" ((USItype)(a)), \ "r" ((USItype)(b)) \ : "r0", "r1") -#else -#error Untested architecture #endif #define UMUL_TIME 20 #define UDIV_TIME 100 |