--- /dev/null
+dnl Alpha EV5 mpn_lshift -- Shift a number left.
+
+dnl Copyright 1994, 1995, 2000, 2003 Free Software Foundation, Inc.
+
+dnl This file is part of the GNU MP Library.
+
+dnl The GNU MP Library is free software; you can redistribute it and/or modify
+dnl it under the terms of the GNU Lesser General Public License as published
+dnl by the Free Software Foundation; either version 3 of the License, or (at
+dnl your option) any later version.
+
+dnl The GNU MP Library is distributed in the hope that it will be useful, but
+dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
+dnl License for more details.
+
+dnl You should have received a copy of the GNU Lesser General Public License
+dnl along with the GNU MP Library. If not, see http://www.gnu.org/licenses/.
+
+include(`../config.m4')
+
+C cycles/limb
+C EV4: ?
+C EV5: 3.25
+C EV6: 1.75
+
+C INPUT PARAMETERS
+C rp r16
+C up r17
+C n r18
+C cnt r19
+
+
+ASM_START()
+PROLOGUE(mpn_lshift)
+ s8addq r18,r17,r17 C make r17 point at end of s1
+ ldq r4,-8(r17) C load first limb
+ subq r31,r19,r20
+ s8addq r18,r16,r16 C make r16 point at end of RES
+ subq r18,1,r18
+ and r18,4-1,r28 C number of limbs in first loop
+ srl r4,r20,r0 C compute function result
+
+ beq r28,$L0
+ subq r18,r28,r18
+
+ ALIGN(8)
+$Loop0: ldq r3,-16(r17)
+ subq r16,8,r16
+ sll r4,r19,r5
+ subq r17,8,r17
+ subq r28,1,r28
+ srl r3,r20,r6
+ bis r3,r3,r4
+ bis r5,r6,r8
+ stq r8,0(r16)
+ bne r28,$Loop0
+
+$L0: sll r4,r19,r24
+ beq r18,$Lend
+C warm up phase 1
+ ldq r1,-16(r17)
+ subq r18,4,r18
+ ldq r2,-24(r17)
+ ldq r3,-32(r17)
+ ldq r4,-40(r17)
+ beq r18,$Lend1
+C warm up phase 2
+ srl r1,r20,r7
+ sll r1,r19,r21
+ srl r2,r20,r8
+ ldq r1,-48(r17)
+ sll r2,r19,r22
+ ldq r2,-56(r17)
+ srl r3,r20,r5
+ bis r7,r24,r7
+ sll r3,r19,r23
+ bis r8,r21,r8
+ srl r4,r20,r6
+ ldq r3,-64(r17)
+ sll r4,r19,r24
+ ldq r4,-72(r17)
+ subq r18,4,r18
+ beq r18,$Lend2
+ ALIGN(16)
+C main loop
+$Loop: stq r7,-8(r16)
+ bis r5,r22,r5
+ stq r8,-16(r16)
+ bis r6,r23,r6
+
+ srl r1,r20,r7
+ subq r18,4,r18
+ sll r1,r19,r21
+ unop C ldq r31,-96(r17)
+
+ srl r2,r20,r8
+ ldq r1,-80(r17)
+ sll r2,r19,r22
+ ldq r2,-88(r17)
+
+ stq r5,-24(r16)
+ bis r7,r24,r7
+ stq r6,-32(r16)
+ bis r8,r21,r8
+
+ srl r3,r20,r5
+ unop C ldq r31,-96(r17)
+ sll r3,r19,r23
+ subq r16,32,r16
+
+ srl r4,r20,r6
+ ldq r3,-96(r17)
+ sll r4,r19,r24
+ ldq r4,-104(r17)
+
+ subq r17,32,r17
+ bne r18,$Loop
+C cool down phase 2/1
+$Lend2: stq r7,-8(r16)
+ bis r5,r22,r5
+ stq r8,-16(r16)
+ bis r6,r23,r6
+ srl r1,r20,r7
+ sll r1,r19,r21
+ srl r2,r20,r8
+ sll r2,r19,r22
+ stq r5,-24(r16)
+ bis r7,r24,r7
+ stq r6,-32(r16)
+ bis r8,r21,r8
+ srl r3,r20,r5
+ sll r3,r19,r23
+ srl r4,r20,r6
+ sll r4,r19,r24
+C cool down phase 2/2
+ stq r7,-40(r16)
+ bis r5,r22,r5
+ stq r8,-48(r16)
+ bis r6,r23,r6
+ stq r5,-56(r16)
+ stq r6,-64(r16)
+C cool down phase 2/3
+ stq r24,-72(r16)
+ ret r31,(r26),1
+
+C cool down phase 1/1
+$Lend1: srl r1,r20,r7
+ sll r1,r19,r21
+ srl r2,r20,r8
+ sll r2,r19,r22
+ srl r3,r20,r5
+ bis r7,r24,r7
+ sll r3,r19,r23
+ bis r8,r21,r8
+ srl r4,r20,r6
+ sll r4,r19,r24
+C cool down phase 1/2
+ stq r7,-8(r16)
+ bis r5,r22,r5
+ stq r8,-16(r16)
+ bis r6,r23,r6
+ stq r5,-24(r16)
+ stq r6,-32(r16)
+ stq r24,-40(r16)
+ ret r31,(r26),1
+
+$Lend: stq r24,-8(r16)
+ ret r31,(r26),1
+EPILOGUE(mpn_lshift)
+ASM_END()
projects / msp430-gcc.git / blobdiff