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authordavem69 <davem69>2001-06-06 11:46:04 +0000
committerdavem69 <davem69>2001-06-06 11:46:04 +0000
commit6f365c21d796310a9ea70d8420e6879eb5abb6ae (patch)
treea17d087d3affc09de3caf515b5a05b063ad72dfa /src/mesa/sparc/norm.S
parent775355a88a0927e2e3a855036c26950397a61d7b (diff)
SPARC normal tnl optimizations.
Diffstat (limited to 'src/mesa/sparc/norm.S')
-rw-r--r--src/mesa/sparc/norm.S603
1 files changed, 603 insertions, 0 deletions
diff --git a/src/mesa/sparc/norm.S b/src/mesa/sparc/norm.S
new file mode 100644
index 0000000000..8ec6334d70
--- /dev/null
+++ b/src/mesa/sparc/norm.S
@@ -0,0 +1,603 @@
+/* $Id: norm.S,v 1.1 2001/06/06 11:46:04 davem69 Exp $ */
+
+#include "sparc_matrix.h"
+
+ .text
+
+#ifdef __sparc_v9__
+#define STACK_VAR_OFF (2047 + (8 * 16))
+#else
+#define STACK_VAR_OFF (4 * 16)
+#endif
+
+ /* Newton-Raphson approximation turns out to be slower
+ * (and less accurate) than direct fsqrts/fdivs.
+ */
+#define ONE_DOT_ZERO 0x3f800000
+
+ .globl _mesa_sparc_transform_normalize_normals
+_mesa_sparc_transform_normalize_normals:
+ /* o0=mat o1=scale o2=in o3=lengths o4=dest */
+
+ sethi %hi(ONE_DOT_ZERO), %g2
+ sub %sp, 16, %sp
+ st %g2, [%sp + STACK_VAR_OFF+0x0]
+ st %o1, [%sp + STACK_VAR_OFF+0x4]
+ ld [%sp + STACK_VAR_OFF+0x0], %f12 ! f12 = 1.0f
+ ld [%sp + STACK_VAR_OFF+0x4], %f15 ! f15 = scale
+ add %sp, 16, %sp
+
+ LDPTR [%o0 + MAT_INV], %o0 ! o0 = mat->inv
+ LDPTR [%o2 + V4F_START], %o5 ! o5 = 'from' in->start
+ ld [%o2 + V4F_COUNT], %g1 ! g1 = in->count
+ ld [%o2 + V4F_STRIDE], %g2 ! g2 = in->stride
+ LDPTR [%o4 + V4F_START], %g3 ! g3 = 'out' dest->start
+
+ LDMATRIX_0_1_2_4_5_6_8_9_10(%o0)
+
+ /* dest->count = in->count */
+ st %g1, [%o4 + V4F_COUNT]
+
+ cmp %g1, 1
+ bl 7f
+ cmp %o3, 0
+ bne 4f
+ clr %o4 ! 'i' for STRIDE_LOOP
+
+1: /* LENGTHS == NULL */
+ ld [%o5 + 0x00], %f0 ! ux = from[0]
+ ld [%o5 + 0x04], %f1 ! uy = from[1]
+ ld [%o5 + 0x08], %f2 ! uz = from[2]
+ add %o5, %g2, %o5 ! STRIDE_F(from, stride)
+ add %o4, 1, %o4 ! i++
+
+ /* tx (f3) = (ux * m0) + (uy * m1) + (uz * m2)
+ * ty (f5) = (ux * m4) + (uy * m5) + (uz * m6)
+ * tz (f7) = (ux * m8) + (uy * m9) + (uz * m10)
+ */
+ fmuls %f0, M0, %f3 ! FGM Group
+ fmuls %f1, M1, %f4 ! FGM Group
+ fmuls %f0, M4, %f5 ! FGM Group
+ fmuls %f1, M5, %f6 ! FGM Group
+ fmuls %f0, M8, %f7 ! FGM Group f3 available
+ fmuls %f1, M9, %f8 ! FGM Group f4 available
+ fadds %f3, %f4, %f3 ! FGA
+ fmuls %f2, M2, %f10 ! FGM Group f5 available
+ fmuls %f2, M6, %f0 ! FGM Group f6 available
+ fadds %f5, %f6, %f5 ! FGA
+ fmuls %f2, M10, %f4 ! FGM Group f7 available
+ fadds %f7, %f8, %f7 ! FGA Group f8,f3 available
+ fadds %f3, %f10, %f3 ! FGA Group f10 available
+ fadds %f5, %f0, %f5 ! FGA Group stall f0,f5 available
+ fadds %f7, %f4, %f7 ! FGA Group stall f4,f7 available
+
+ /* f3=tx, f5=ty, f7=tz */
+
+ /* len (f6) = (tx * tx) + (ty * ty) + (tz * tz) */
+ fmuls %f3, %f3, %f6 ! FGM Group f3 available
+ fmuls %f5, %f5, %f8 ! FGM Group f5 available
+ fmuls %f7, %f7, %f10 ! FGM Group f7 available
+ fadds %f6, %f8, %f6 ! FGA Group 2cyc stall f6,f8 available
+ fadds %f6, %f10, %f6 ! FGA Group 4cyc stall f6,f10 available
+
+ /* scale (f6) = 1.0 / sqrt(len) */
+ fsqrts %f6, %f6 ! FDIV 20 cycles
+ fdivs %f12, %f6, %f6 ! FDIV 14 cycles
+
+ fmuls %f3, %f6, %f3
+ st %f3, [%g3 + 0x00] ! out[i][0] = tx * scale
+ fmuls %f5, %f6, %f5
+ st %f5, [%g3 + 0x04] ! out[i][1] = ty * scale
+ fmuls %f7, %f6, %f7
+ st %f7, [%g3 + 0x08] ! out[i][2] = tz * scale
+
+ cmp %o4, %g1 ! continue if (i < count)
+ bl 1b
+ add %g3, 0x0c, %g3 ! advance out vector pointer
+
+ ba 7f
+ nop
+
+4: /* LENGTHS != NULL */
+ fmuls M0, %f15, M0
+ fmuls M1, %f15, M1
+ fmuls M2, %f15, M2
+ fmuls M4, %f15, M4
+ fmuls M5, %f15, M5
+ fmuls M6, %f15, M6
+ fmuls M8, %f15, M8
+ fmuls M9, %f15, M9
+ fmuls M10, %f15, M10
+
+5:
+ ld [%o5 + 0x00], %f0 ! ux = from[0]
+ ld [%o5 + 0x04], %f1 ! uy = from[1]
+ ld [%o5 + 0x08], %f2 ! uz = from[2]
+ add %o5, %g2, %o5 ! STRIDE_F(from, stride)
+ add %o4, 1, %o4 ! i++
+
+ /* tx (f3) = (ux * m0) + (uy * m1) + (uz * m2)
+ * ty (f5) = (ux * m4) + (uy * m5) + (uz * m6)
+ * tz (f7) = (ux * m8) + (uy * m9) + (uz * m10)
+ */
+ fmuls %f0, M0, %f3 ! FGM Group
+ fmuls %f1, M1, %f4 ! FGM Group
+ fmuls %f0, M4, %f5 ! FGM Group
+ fmuls %f1, M5, %f6 ! FGM Group
+ fmuls %f0, M8, %f7 ! FGM Group f3 available
+ fmuls %f1, M9, %f8 ! FGM Group f4 available
+ fadds %f3, %f4, %f3 ! FGA
+ fmuls %f2, M2, %f10 ! FGM Group f5 available
+ fmuls %f2, M6, %f0 ! FGM Group f6 available
+ fadds %f5, %f6, %f5 ! FGA
+ fmuls %f2, M10, %f4 ! FGM Group f7 available
+ fadds %f7, %f8, %f7 ! FGA Group f8,f3 available
+ fadds %f3, %f10, %f3 ! FGA Group f10 available
+ ld [%o3], %f13 ! LSU
+ fadds %f5, %f0, %f5 ! FGA Group stall f0,f5 available
+ add %o3, 4, %o3 ! IEU0
+ fadds %f7, %f4, %f7 ! FGA Group stall f4,f7 available
+
+ /* f3=tx, f5=ty, f7=tz, f13=lengths[i] */
+
+ fmuls %f3, %f13, %f3
+ st %f3, [%g3 + 0x00] ! out[i][0] = tx * len
+ fmuls %f5, %f13, %f5
+ st %f5, [%g3 + 0x04] ! out[i][1] = ty * len
+ fmuls %f7, %f13, %f7
+ st %f7, [%g3 + 0x08] ! out[i][2] = tz * len
+
+ cmp %o4, %g1 ! continue if (i < count)
+ bl 5b
+ add %g3, 0x0c, %g3 ! advance out vector pointer
+
+7: retl
+ nop
+
+ .globl _mesa_sparc_transform_normalize_normals_no_rot
+_mesa_sparc_transform_normalize_normals_no_rot:
+ /* o0=mat o1=scale o2=in o3=lengths o4=dest */
+
+ sethi %hi(ONE_DOT_ZERO), %g2
+ sub %sp, 16, %sp
+ st %g2, [%sp + STACK_VAR_OFF+0x0]
+ st %o1, [%sp + STACK_VAR_OFF+0x4]
+ ld [%sp + STACK_VAR_OFF+0x0], %f12 ! f12 = 1.0f
+ ld [%sp + STACK_VAR_OFF+0x4], %f15 ! f15 = scale
+ add %sp, 16, %sp
+
+ LDPTR [%o0 + MAT_INV], %o0 ! o0 = mat->inv
+ LDPTR [%o2 + V4F_START], %o5 ! o5 = 'from' in->start
+ ld [%o2 + V4F_COUNT], %g1 ! g1 = in->count
+ ld [%o2 + V4F_STRIDE], %g2 ! g2 = in->stride
+ LDPTR [%o4 + V4F_START], %g3 ! g3 = 'out' dest->start
+
+ LDMATRIX_0_5_10(%o0)
+
+ /* dest->count = in->count */
+ st %g1, [%o4 + V4F_COUNT]
+
+ cmp %g1, 1
+ bl 7f
+ cmp %o3, 0
+ bne 4f
+ clr %o4 ! 'i' for STRIDE_LOOP
+
+1: /* LENGTHS == NULL */
+ ld [%o5 + 0x00], %f0 ! ux = from[0]
+ ld [%o5 + 0x04], %f1 ! uy = from[1]
+ ld [%o5 + 0x08], %f2 ! uz = from[2]
+ add %o5, %g2, %o5 ! STRIDE_F(from, stride)
+ add %o4, 1, %o4 ! i++
+
+ /* tx (f3) = (ux * m0)
+ * ty (f5) = (uy * m5)
+ * tz (f7) = (uz * m10)
+ */
+ fmuls %f0, M0, %f3 ! FGM Group
+ fmuls %f1, M5, %f5 ! FGM Group
+ fmuls %f2, M10, %f7 ! FGM Group
+
+ /* f3=tx, f5=ty, f7=tz */
+
+ /* len (f6) = (tx * tx) + (ty * ty) + (tz * tz) */
+ fmuls %f3, %f3, %f6 ! FGM Group stall, f3 available
+ fmuls %f5, %f5, %f8 ! FGM Group f5 available
+ fmuls %f7, %f7, %f10 ! FGM Group f7 available
+ fadds %f6, %f8, %f6 ! FGA Group 2cyc stall f6,f8 available
+ fadds %f6, %f10, %f6 ! FGA Group 4cyc stall f6,f10 available
+
+ /* scale (f6) = 1.0 / sqrt(len) */
+ fsqrts %f6, %f6 ! FDIV 20 cycles
+ fdivs %f12, %f6, %f6 ! FDIV 14 cycles
+
+ fmuls %f3, %f6, %f3
+ st %f3, [%g3 + 0x00] ! out[i][0] = tx * scale
+ fmuls %f5, %f6, %f5
+ st %f5, [%g3 + 0x04] ! out[i][1] = ty * scale
+ fmuls %f7, %f6, %f7
+ st %f7, [%g3 + 0x08] ! out[i][2] = tz * scale
+
+ cmp %o4, %g1 ! continue if (i < count)
+ bl 1b
+ add %g3, 0x0c, %g3 ! advance out vector pointer
+
+ ba 7f
+ nop
+
+4: /* LENGTHS != NULL */
+ fmuls M0, %f15, M0
+ fmuls M5, %f15, M5
+ fmuls M10, %f15, M10
+
+5:
+ ld [%o5 + 0x00], %f0 ! ux = from[0]
+ ld [%o5 + 0x04], %f1 ! uy = from[1]
+ ld [%o5 + 0x08], %f2 ! uz = from[2]
+ add %o5, %g2, %o5 ! STRIDE_F(from, stride)
+ add %o4, 1, %o4 ! i++
+
+ /* tx (f3) = (ux * m0)
+ * ty (f5) = (uy * m5)
+ * tz (f7) = (uz * m10)
+ */
+ fmuls %f0, M0, %f3 ! FGM Group
+ ld [%o3], %f13 ! LSU
+ fmuls %f1, M5, %f5 ! FGM Group
+ add %o3, 4, %o3 ! IEU0
+ fmuls %f2, M10, %f7 ! FGM Group
+
+ /* f3=tx, f5=ty, f7=tz, f13=lengths[i] */
+
+ fmuls %f3, %f13, %f3
+ st %f3, [%g3 + 0x00] ! out[i][0] = tx * len
+ fmuls %f5, %f13, %f5
+ st %f5, [%g3 + 0x04] ! out[i][1] = ty * len
+ fmuls %f7, %f13, %f7
+ st %f7, [%g3 + 0x08] ! out[i][2] = tz * len
+
+ cmp %o4, %g1 ! continue if (i < count)
+ bl 5b
+ add %g3, 0x0c, %g3 ! advance out vector pointer
+
+7: retl
+ nop
+
+ .globl _mesa_sparc_transform_rescale_normals_no_rot
+_mesa_sparc_transform_rescale_normals_no_rot:
+ /* o0=mat o1=scale o2=in o3=lengths o4=dest */
+ sub %sp, 16, %sp
+ st %o1, [%sp + STACK_VAR_OFF+0x0]
+ ld [%sp + STACK_VAR_OFF+0x0], %f15 ! f15 = scale
+ add %sp, 16, %sp
+
+ LDPTR [%o0 + MAT_INV], %o0 ! o0 = mat->inv
+ LDPTR [%o2 + V4F_START], %o5 ! o5 = 'from' in->start
+ ld [%o2 + V4F_COUNT], %g1 ! g1 = in->count
+ ld [%o2 + V4F_STRIDE], %g2 ! g2 = in->stride
+ LDPTR [%o4 + V4F_START], %g3 ! g3 = 'out' dest->start
+
+ LDMATRIX_0_5_10(%o0)
+
+ /* dest->count = in->count */
+ st %g1, [%o4 + V4F_COUNT]
+
+ cmp %g1, 1
+ bl 7f
+ clr %o4 ! 'i' for STRIDE_LOOP
+
+ fmuls M0, %f15, M0
+ fmuls M5, %f15, M5
+ fmuls M10, %f15, M10
+
+1: ld [%o5 + 0x00], %f0 ! ux = from[0]
+ ld [%o5 + 0x04], %f1 ! uy = from[1]
+ ld [%o5 + 0x08], %f2 ! uz = from[2]
+ add %o5, %g2, %o5 ! STRIDE_F(from, stride)
+ add %o4, 1, %o4 ! i++
+
+ /* tx (f3) = (ux * m0)
+ * ty (f5) = (uy * m5)
+ * tz (f7) = (uz * m10)
+ */
+ fmuls %f0, M0, %f3 ! FGM Group
+ st %f3, [%g3 + 0x00] ! LSU
+ fmuls %f1, M5, %f5 ! FGM Group
+ st %f5, [%g3 + 0x04] ! LSU
+ fmuls %f2, M10, %f7 ! FGM Group
+ st %f7, [%g3 + 0x08] ! LSU
+
+ cmp %o4, %g1 ! continue if (i < count)
+ bl 1b
+ add %g3, 0x0c, %g3 ! advance out vector pointer
+
+7: retl
+ nop
+
+ .globl _mesa_sparc_transform_rescale_normals
+_mesa_sparc_transform_rescale_normals:
+ /* o0=mat o1=scale o2=in o3=lengths o4=dest */
+ sub %sp, 16, %sp
+ st %o1, [%sp + STACK_VAR_OFF+0x0]
+ ld [%sp + STACK_VAR_OFF+0x0], %f15 ! f15 = scale
+ add %sp, 16, %sp
+
+ LDPTR [%o0 + MAT_INV], %o0 ! o0 = mat->inv
+ LDPTR [%o2 + V4F_START], %o5 ! o5 = 'from' in->start
+ ld [%o2 + V4F_COUNT], %g1 ! g1 = in->count
+ ld [%o2 + V4F_STRIDE], %g2 ! g2 = in->stride
+ LDPTR [%o4 + V4F_START], %g3 ! g3 = 'out' dest->start
+
+ LDMATRIX_0_1_2_4_5_6_8_9_10(%o0)
+
+ /* dest->count = in->count */
+ st %g1, [%o4 + V4F_COUNT]
+
+ cmp %g1, 1
+ bl 7f
+ clr %o4 ! 'i' for STRIDE_LOOP
+
+ fmuls M0, %f15, M0
+ fmuls M1, %f15, M1
+ fmuls M2, %f15, M2
+ fmuls M4, %f15, M4
+ fmuls M5, %f15, M5
+ fmuls M6, %f15, M6
+ fmuls M8, %f15, M8
+ fmuls M9, %f15, M9
+ fmuls M10, %f15, M10
+
+1: ld [%o5 + 0x00], %f0 ! ux = from[0]
+ ld [%o5 + 0x04], %f1 ! uy = from[1]
+ ld [%o5 + 0x08], %f2 ! uz = from[2]
+ add %o5, %g2, %o5 ! STRIDE_F(from, stride)
+ add %o4, 1, %o4 ! i++
+
+ fmuls %f0, M0, %f3 ! FGM Group
+ fmuls %f1, M1, %f4 ! FGM Group
+ fmuls %f0, M4, %f5 ! FGM Group
+ fmuls %f1, M5, %f6 ! FGM Group
+ fmuls %f0, M8, %f7 ! FGM Group f3 available
+ fmuls %f1, M9, %f8 ! FGM Group f4 available
+ fadds %f3, %f4, %f3 ! FGA
+ fmuls %f2, M2, %f10 ! FGM Group f5 available
+ fmuls %f2, M6, %f0 ! FGM Group f6 available
+ fadds %f5, %f6, %f5 ! FGA
+ fmuls %f2, M10, %f4 ! FGM Group f7 available
+ fadds %f7, %f8, %f7 ! FGA Group f8,f3 available
+ fadds %f3, %f10, %f3 ! FGA Group f10 available
+ st %f3, [%g3 + 0x00] ! LSU
+ fadds %f5, %f0, %f5 ! FGA Group stall f0,f5 available
+ st %f5, [%g3 + 0x04] ! LSU
+ fadds %f7, %f4, %f7 ! FGA Group stall f4,f7 available
+ st %f7, [%g3 + 0x08] ! LSU
+
+ cmp %o4, %g1 ! continue if (i < count)
+ bl 1b
+ add %g3, 0x0c, %g3 ! advance out vector pointer
+
+7: retl
+ nop
+
+ .globl _mesa_sparc_transform_normals_no_rot
+_mesa_sparc_transform_normals_no_rot:
+ /* o0=mat o1=scale o2=in o3=lengths o4=dest */
+ LDPTR [%o0 + MAT_INV], %o0 ! o0 = mat->inv
+ LDPTR [%o2 + V4F_START], %o5 ! o5 = 'from' in->start
+ ld [%o2 + V4F_COUNT], %g1 ! g1 = in->count
+ ld [%o2 + V4F_STRIDE], %g2 ! g2 = in->stride
+ LDPTR [%o4 + V4F_START], %g3 ! g3 = 'out' dest->start
+
+ LDMATRIX_0_5_10(%o0)
+
+ /* dest->count = in->count */
+ st %g1, [%o4 + V4F_COUNT]
+
+ cmp %g1, 1
+ bl 7f
+ clr %o4 ! 'i' for STRIDE_LOOP
+
+1: ld [%o5 + 0x00], %f0 ! ux = from[0]
+ ld [%o5 + 0x04], %f1 ! uy = from[1]
+ ld [%o5 + 0x08], %f2 ! uz = from[2]
+ add %o5, %g2, %o5 ! STRIDE_F(from, stride)
+ add %o4, 1, %o4 ! i++
+
+ /* tx (f3) = (ux * m0)
+ * ty (f5) = (uy * m5)
+ * tz (f7) = (uz * m10)
+ */
+ fmuls %f0, M0, %f3 ! FGM Group
+ st %f3, [%g3 + 0x00] ! LSU
+ fmuls %f1, M5, %f5 ! FGM Group
+ st %f5, [%g3 + 0x04] ! LSU
+ fmuls %f2, M10, %f7 ! FGM Group
+ st %f7, [%g3 + 0x08] ! LSU
+
+ cmp %o4, %g1 ! continue if (i < count)
+ bl 1b
+ add %g3, 0x0c, %g3 ! advance out vector pointer
+
+7: retl
+ nop
+
+ .globl _mesa_sparc_transform_normals
+_mesa_sparc_transform_normals:
+ /* o0=mat o1=scale o2=in o3=lengths o4=dest */
+ LDPTR [%o0 + MAT_INV], %o0 ! o0 = mat->inv
+ LDPTR [%o2 + V4F_START], %o5 ! o5 = 'from' in->start
+ ld [%o2 + V4F_COUNT], %g1 ! g1 = in->count
+ ld [%o2 + V4F_STRIDE], %g2 ! g2 = in->stride
+ LDPTR [%o4 + V4F_START], %g3 ! g3 = 'out' dest->start
+
+ LDMATRIX_0_1_2_4_5_6_8_9_10(%o0)
+
+ /* dest->count = in->count */
+ st %g1, [%o4 + V4F_COUNT]
+
+ cmp %g1, 1
+ bl 7f
+ clr %o4 ! 'i' for STRIDE_LOOP
+
+1: ld [%o5 + 0x00], %f0 ! ux = from[0]
+ ld [%o5 + 0x04], %f1 ! uy = from[1]
+ ld [%o5 + 0x08], %f2 ! uz = from[2]
+ add %o5, %g2, %o5 ! STRIDE_F(from, stride)
+ add %o4, 1, %o4 ! i++
+
+ fmuls %f0, M0, %f3 ! FGM Group
+ fmuls %f1, M1, %f4 ! FGM Group
+ fmuls %f0, M4, %f5 ! FGM Group
+ fmuls %f1, M5, %f6 ! FGM Group
+ fmuls %f0, M8, %f7 ! FGM Group f3 available
+ fmuls %f1, M9, %f8 ! FGM Group f4 available
+ fadds %f3, %f4, %f3 ! FGA
+ fmuls %f2, M2, %f10 ! FGM Group f5 available
+ fmuls %f2, M6, %f0 ! FGM Group f6 available
+ fadds %f5, %f6, %f5 ! FGA
+ fmuls %f2, M10, %f4 ! FGM Group f7 available
+ fadds %f7, %f8, %f7 ! FGA Group f8,f3 available
+ fadds %f3, %f10, %f3 ! FGA Group f10 available
+ st %f3, [%g3 + 0x00] ! LSU
+ fadds %f5, %f0, %f5 ! FGA Group stall f0,f5 available
+ st %f5, [%g3 + 0x04] ! LSU
+ fadds %f7, %f4, %f7 ! FGA Group stall f4,f7 available
+ st %f7, [%g3 + 0x08] ! LSU
+
+ cmp %o4, %g1 ! continue if (i < count)
+ bl 1b
+ add %g3, 0x0c, %g3 ! advance out vector pointer
+
+7: retl
+ nop
+
+ .globl _mesa_sparc_normalize_normals
+_mesa_sparc_normalize_normals:
+ /* o0=mat o1=scale o2=in o3=lengths o4=dest */
+
+ sethi %hi(ONE_DOT_ZERO), %g2
+ sub %sp, 16, %sp
+ st %g2, [%sp + STACK_VAR_OFF+0x0]
+ ld [%sp + STACK_VAR_OFF+0x0], %f12 ! f12 = 1.0f
+ add %sp, 16, %sp
+
+ LDPTR [%o2 + V4F_START], %o5 ! o5 = 'from' in->start
+ ld [%o2 + V4F_COUNT], %g1 ! g1 = in->count
+ ld [%o2 + V4F_STRIDE], %g2 ! g2 = in->stride
+ LDPTR [%o4 + V4F_START], %g3 ! g3 = 'out' dest->start
+
+ /* dest->count = in->count */
+ st %g1, [%o4 + V4F_COUNT]
+
+ cmp %g1, 1
+ bl 7f
+ cmp %o3, 0
+ bne 4f
+ clr %o4 ! 'i' for STRIDE_LOOP
+
+1: /* LENGTHS == NULL */
+ ld [%o5 + 0x00], %f3 ! ux = from[0]
+ ld [%o5 + 0x04], %f5 ! uy = from[1]
+ ld [%o5 + 0x08], %f7 ! uz = from[2]
+ add %o5, %g2, %o5 ! STRIDE_F(from, stride)
+ add %o4, 1, %o4 ! i++
+
+ /* f3=tx, f5=ty, f7=tz */
+
+ /* len (f6) = (tx * tx) + (ty * ty) + (tz * tz) */
+ fmuls %f3, %f3, %f6 ! FGM Group f3 available
+ fmuls %f5, %f5, %f8 ! FGM Group f5 available
+ fmuls %f7, %f7, %f10 ! FGM Group f7 available
+ fadds %f6, %f8, %f6 ! FGA Group 2cyc stall f6,f8 available
+ fadds %f6, %f10, %f6 ! FGA Group 4cyc stall f6,f10 available
+
+ /* scale (f6) = 1.0 / sqrt(len) */
+ fsqrts %f6, %f6 ! FDIV 20 cycles
+ fdivs %f12, %f6, %f6 ! FDIV 14 cycles
+
+ fmuls %f3, %f6, %f3
+ st %f3, [%g3 + 0x00] ! out[i][0] = tx * scale
+ fmuls %f5, %f6, %f5
+ st %f5, [%g3 + 0x04] ! out[i][1] = ty * scale
+ fmuls %f7, %f6, %f7
+ st %f7, [%g3 + 0x08] ! out[i][2] = tz * scale
+
+ cmp %o4, %g1 ! continue if (i < count)
+ bl 1b
+ add %g3, 0x0c, %g3 ! advance out vector pointer
+
+ ba 7f
+ nop
+
+4: /* LENGTHS != NULL */
+
+5:
+ ld [%o5 + 0x00], %f3 ! ux = from[0]
+ ld [%o5 + 0x04], %f5 ! uy = from[1]
+ ld [%o5 + 0x08], %f7 ! uz = from[2]
+ add %o5, %g2, %o5 ! STRIDE_F(from, stride)
+ add %o4, 1, %o4 ! i++
+
+ ld [%o3], %f13 ! LSU
+ add %o3, 4, %o3 ! IEU0
+
+ /* f3=tx, f5=ty, f7=tz, f13=lengths[i] */
+
+ fmuls %f3, %f13, %f3
+ st %f3, [%g3 + 0x00] ! out[i][0] = tx * len
+ fmuls %f5, %f13, %f5
+ st %f5, [%g3 + 0x04] ! out[i][1] = ty * len
+ fmuls %f7, %f13, %f7
+ st %f7, [%g3 + 0x08] ! out[i][2] = tz * len
+
+ cmp %o4, %g1 ! continue if (i < count)
+ bl 5b
+ add %g3, 0x0c, %g3 ! advance out vector pointer
+
+7: retl
+ nop
+
+ .globl _mesa_sparc_rescale_normals
+_mesa_sparc_rescale_normals:
+ /* o0=mat o1=scale o2=in o3=lengths o4=dest */
+
+ sethi %hi(ONE_DOT_ZERO), %g2
+ sub %sp, 16, %sp
+ st %o1, [%sp + STACK_VAR_OFF+0x0]
+ ld [%sp + STACK_VAR_OFF+0x0], %f15 ! f15 = scale
+ add %sp, 16, %sp
+
+ LDPTR [%o2 + V4F_START], %o5 ! o5 = 'from' in->start
+ ld [%o2 + V4F_COUNT], %g1 ! g1 = in->count
+ ld [%o2 + V4F_STRIDE], %g2 ! g2 = in->stride
+ LDPTR [%o4 + V4F_START], %g3 ! g3 = 'out' dest->start
+
+ /* dest->count = in->count */
+ st %g1, [%o4 + V4F_COUNT]
+
+ cmp %g1, 1
+ bl 7f
+ clr %o4 ! 'i' for STRIDE_LOOP
+
+1:
+ ld [%o5 + 0x00], %f3 ! ux = from[0]
+ ld [%o5 + 0x04], %f5 ! uy = from[1]
+ ld [%o5 + 0x08], %f7 ! uz = from[2]
+ add %o5, %g2, %o5 ! STRIDE_F(from, stride)
+ add %o4, 1, %o4 ! i++
+
+ /* f3=tx, f5=ty, f7=tz */
+
+ fmuls %f3, %f15, %f3
+ st %f3, [%g3 + 0x00] ! out[i][0] = tx * scale
+ fmuls %f5, %f15, %f5
+ st %f5, [%g3 + 0x04] ! out[i][1] = ty * scale
+ fmuls %f7, %f15, %f7
+ st %f7, [%g3 + 0x08] ! out[i][2] = tz * scale
+
+ cmp %o4, %g1 ! continue if (i < count)
+ bl 1b
+ add %g3, 0x0c, %g3 ! advance out vector pointer
+
+7: retl
+ nop