xfnw/plan9fox
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

libmp: add mpvecadd()/mpvecsub() assembly versions for arm

Browse source
This commit is contained in:
cinap_lenrek 2015-11-20 06:25:56 +01:00
parent 2559e19e19
commit 9fccf1629e
5 changed files with 68 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

2
sys/src/libmp/arm/mkfile
View file

@ -2,7 +2,7 @@ objtype=arm
</$objtype/mkfile </$objtype/mkfile
LIB=/$objtype/lib/libmp.a LIB=/$objtype/lib/libmp.a
SFILES=mpvecdigmuladd.s mpvecdigmulsub.s SFILES=mpvecdigmuladd.s mpvecdigmulsub.s mpvecadd.s mpvecsub.s
HFILES=/$objtype/include/u.h /sys/include/mp.h ../port/dat.h HFILES=/$objtype/include/u.h /sys/include/mp.h ../port/dat.h

32
sys/src/libmp/arm/mpvecadd.s Normal file
View file

@ -0,0 +1,32 @@
TEXT mpvecadd(SB),$0
MOVW alen+4(FP), R4
MOVW b+8(FP), R5
MOVW blen+12(FP), R6
MOVW sum+16(FP), R7
MOVW $0, R8
MOVW R8, R3
CMP R8, R6
B.EQ _add1
SUB R6, R4, R4
_addloop1:
MOVW.WP 4(R0), R1
MOVW.WP 4(R5), R2
CMP $1, R3
ADC.S R2, R1
ADC R8, R8, R3
MOVW.WP R1, 4(R7)
SUB.S $1, R6
B.NE _addloop1
_add1:
CMP R8, R4
B.EQ _addend
_addloop2:
MOVW.WP 4(R0), R1
ADD.S R3, R1
ADC R8, R8, R3
MOVW.WP R1, 4(R7)
SUB.S $1, R4
B.NE _addloop2
_addend:
MOVW R3, (R7)
RET

4
sys/src/libmp/arm/mpvecdigmuladd.s
View file

@ -5,12 +5,12 @@ TEXT mpvecdigmuladd(SB),$0
MOVW $0, R2 MOVW $0, R2
_muladdloop: _muladdloop:
MOVW $0, R1 MOVW $0, R1
MOVW.W.P 4(R0), R3 MOVW.WP 4(R0), R3
MULALU R3, R5, (R1, R2) MULALU R3, R5, (R1, R2)
MOVW (R6), R7 MOVW (R6), R7
ADD.S R2, R7 ADD.S R2, R7
ADC $0, R1, R2 ADC $0, R1, R2
MOVW.W.P R7, 4(R6) MOVW.WP R7, 4(R6)
SUB.S $1, R4 SUB.S $1, R4
B.NE _muladdloop B.NE _muladdloop
MOVW (R6), R7 MOVW (R6), R7

4
sys/src/libmp/arm/mpvecdigmulsub.s
View file

@ -5,13 +5,13 @@ TEXT mpvecdigmulsub(SB),$0
MOVW $0, R2 MOVW $0, R2
_mulsubloop: _mulsubloop:
MOVW $0, R1 MOVW $0, R1
MOVW.W.P 4(R0), R3 MOVW.WP 4(R0), R3
MULALU R3, R5, (R1, R2) MULALU R3, R5, (R1, R2)
MOVW (R6), R7 MOVW (R6), R7
SUB.S R2, R7 SUB.S R2, R7
ADD.CC $1, R1 ADD.CC $1, R1
MOVW R1, R2 MOVW R1, R2
MOVW.W.P R7, 4(R6) MOVW.WP R7, 4(R6)
SUB.S $1, R4 SUB.S $1, R4
B.NE _mulsubloop B.NE _mulsubloop
MOVW (R6), R7 MOVW (R6), R7

31
sys/src/libmp/arm/mpvecsub.s Normal file
View file

@ -0,0 +1,31 @@
TEXT mpvecsub(SB),$0
MOVW alen+4(FP), R4
MOVW b+8(FP), R5
MOVW blen+12(FP), R6
MOVW diff+16(FP), R7
MOVW $0, R8
MOVW R8, R3
CMP R8, R6
B.EQ _sub1
SUB R6, R4, R4
_subloop1:
MOVW.WP 4(R0), R1
MOVW.WP 4(R5), R2
CMP R3, R8
SBC.S R2, R1
SBC R8, R8, R3
MOVW.WP R1, 4(R7)
SUB.S $1, R6
B.NE _subloop1
_sub1:
CMP R8, R4
RET.EQ
_subloop2:
MOVW.WP 4(R0), R1
CMP R3, R8
SBC.S R8, R1
SBC R8, R8, R3
MOVW.WP R1, 4(R7)
SUB.S $1, R4
B.NE _subloop2
RET