/*
* (C) GraÅžvydas "notaz" Ignotas, 2011
*
- * This work is licensed under the terms of any of these licenses
- * (at your option):
- * - GNU GPL, version 2 or later.
- * - GNU LGPL, version 2.1 or later.
+ * This work is licensed under the terms of GNU GPL version 2 or later.
* See the COPYING file in the top-level directory.
*/
.text
.align 2
+@ XXX: gteMAC calc shouldn't be saturating, but it is here
+
@ approximate gteMAC|123 flags
@ in: rr 123 as gteMAC|123
@ trash: nothing
vadd.s64 d20, d7 @ | gteDQB + gteDQA * quotient
vmovn.s32 d18, q9 @ fS|XY2 [s16]
- vqshrn.s64 d20, q10, #12 @ | gteMAC0
+ vqmovn.s64 d20, q10 @ | gteMAC0
add r3, r0, #4*12
vst1.32 d16, [r3]! @ writeback fS|XY01
vst1.32 d18[0], [r3] @ ...2
add r3, r0, #4*24
+ vshr.s32 d21, d20, #12
vst1.32 d20[0], [r3] @ gteMAC0
movs r4, r4, lsr #17
orrne lr, #(1<<31)
orrne lr, #(1<<17) @ limE
- vmax.s32 d21, d20, d31
+ vmax.s32 d21, d31
vmov.i32 d22, #0x1000
vmin.s32 d21, d22
add r3, r0, #4*8
vst1.32 d12, [r3]! @ writeback fS|XY v=0,1
vst1.32 d13[0], [r3]
- vqshrn.s64 d26, q13, #12 @ | gteMAC0
+ vqmovn.s64 d26, q13 @ | gteMAC0
vmovl.u16 q5, d10 @ expand gteIR|123 v=2
vmov.i32 d13, #0x1000
- vmax.s32 d12, d26, d30
+ vshr.s32 d12, d26, #12
add r3, r0, #4*24
vst1.32 d26[0], [r3]! @ gteMAC0
+ vmax.s32 d12, d30
vst1.32 d8, [r3]! @ gteMAC123 (last iteration)
vst1.32 d9[0], [r3]
-@ the name is misnormer, this doesn't use NEON but oh well..
-.global gteNCLIP_neon @ r0=CP2 (d,c),
-gteNCLIP_neon:
- push {r4-r6,lr}
-
- add r1, r0, #4*12
- ldmia r1, {r1-r3}
- mov r4, r1, asr #16
- mov r5, r2, asr #16
- mov r6, r3, asr #16
- sub r12, r4, r5 @ 3: gteSY0 - gteSY1
- sub r5, r5, r6 @ 1: gteSY1 - gteSY2
- sxth r1, r1
- smull r1, r5, r1, r5 @ RdLo, RdHi
- sub r6, r4 @ 2: gteSY2 - gteSY0
- sxth r2, r2
- smlal r1, r5, r2, r6
- mov lr, #0 @ gteFLAG
- sxth r3, r3
- smlal r1, r5, r3, r12
- mov r6, #1<<31
- orr r6, #1<<15
- movs r2, r1, lsl #1
- adc r5, r5
- cmp r5, #0
- movtgt lr, #((1<<31)|(1<<16))>>16
- mvngt r1, #1<<31 @ maxint
- cmn r5, #1
- movmi r1, #1<<31 @ minint
- orrmi lr, r6
- str r1, [r0, #4*24]
- str lr, [r0, #4*(32+31)] @ gteFLAG
-
- pop {r4-r6,pc}
- .size gteNCLIP_neon, .-gteNCLIP_neon
-
-
@ vim:filetype=armasm