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/*
* Clip testing in SPARC assembly
*/
#if __arch64__
#define LDPTR ldx
#define V4F_DATA 0x00
#define V4F_START 0x08
#define V4F_COUNT 0x10
#define V4F_STRIDE 0x14
#define V4F_SIZE 0x18
#define V4F_FLAGS 0x1c
#else
#define LDPTR ld
#define V4F_DATA 0x00
#define V4F_START 0x04
#define V4F_COUNT 0x08
#define V4F_STRIDE 0x0c
#define V4F_SIZE 0x10
#define V4F_FLAGS 0x14
#endif
#define VEC_SIZE_1 1
#define VEC_SIZE_2 3
#define VEC_SIZE_3 7
#define VEC_SIZE_4 15
.register %g2, #scratch
.register %g3, #scratch
.text
.align 64
one_dot_zero:
.word 0x3f800000 /* 1.0f */
/* This trick is shamelessly stolen from the x86
* Mesa asm. Very clever, and we can do it too
* since we have the necessary add with carry
* instructions on Sparc.
*/
clip_table:
.byte 0, 1, 0, 2, 4, 5, 4, 6
.byte 0, 1, 0, 2, 8, 9, 8, 10
.byte 32, 33, 32, 34, 36, 37, 36, 38
.byte 32, 33, 32, 34, 40, 41, 40, 42
.byte 0, 1, 0, 2, 4, 5, 4, 6
.byte 0, 1, 0, 2, 8, 9, 8, 10
.byte 16, 17, 16, 18, 20, 21, 20, 22
.byte 16, 17, 16, 18, 24, 25, 24, 26
.byte 63, 61, 63, 62, 55, 53, 55, 54
.byte 63, 61, 63, 62, 59, 57, 59, 58
.byte 47, 45, 47, 46, 39, 37, 39, 38
.byte 47, 45, 47, 46, 43, 41, 43, 42
.byte 63, 61, 63, 62, 55, 53, 55, 54
.byte 63, 61, 63, 62, 59, 57, 59, 58
.byte 31, 29, 31, 30, 23, 21, 23, 22
.byte 31, 29, 31, 30, 27, 25, 27, 26
/* GLvector4f *clip_vec, GLvector4f *proj_vec,
GLubyte clipMask[], GLubyte *orMask, GLubyte *andMask */
.align 64
__pc_tramp:
retl
nop
.globl _mesa_sparc_cliptest_points4
_mesa_sparc_cliptest_points4:
save %sp, -64, %sp
call __pc_tramp
sub %o7, (. - one_dot_zero - 4), %g1
ld [%g1 + 0x0], %f4
add %g1, 0x4, %g1
ld [%i0 + V4F_STRIDE], %l1
ld [%i0 + V4F_COUNT], %l3
LDPTR [%i0 + V4F_START], %i0
LDPTR [%i1 + V4F_START], %i5
ldub [%i3], %g2
ldub [%i4], %g3
sll %g3, 8, %g3
or %g2, %g3, %g2
ld [%i1 + V4F_FLAGS], %g3
or %g3, VEC_SIZE_4, %g3
st %g3, [%i1 + V4F_FLAGS]
mov 3, %g3
st %g3, [%i1 + V4F_SIZE]
st %l3, [%i1 + V4F_COUNT]
clr %l2
clr %l0
/* l0: i
* l3: count
* l1: stride
* l2: c
* g2: (tmpAndMask << 8) | tmpOrMask
* g1: clip_table
* i0: from[stride][i]
* i2: clipMask
* i5: vProj[4][i]
*/
1: ld [%i0 + 0x0c], %f3 ! LSU Group
ld [%i0 + 0x0c], %g5 ! LSU Group
ld [%i0 + 0x08], %g4 ! LSU Group
fdivs %f4, %f3, %f8 ! FGM
addcc %g5, %g5, %g5 ! IEU1 Group
addx %g0, 0x0, %g3 ! IEU1 Group
addcc %g4, %g4, %g4 ! IEU1 Group
addx %g3, %g3, %g3 ! IEU1 Group
subcc %g5, %g4, %g0 ! IEU1 Group
ld [%i0 + 0x04], %g4 ! LSU Group
addx %g3, %g3, %g3 ! IEU1 Group
addcc %g4, %g4, %g4 ! IEU1 Group
addx %g3, %g3, %g3 ! IEU1 Group
subcc %g5, %g4, %g0 ! IEU1 Group
ld [%i0 + 0x00], %g4 ! LSU Group
addx %g3, %g3, %g3 ! IEU1 Group
addcc %g4, %g4, %g4 ! IEU1 Group
addx %g3, %g3, %g3 ! IEU1 Group
subcc %g5, %g4, %g0 ! IEU1 Group
addx %g3, %g3, %g3 ! IEU1 Group
ldub [%g1 + %g3], %g3 ! LSU Group
cmp %g3, 0 ! IEU1 Group, stall
be 2f ! CTI
stb %g3, [%i2] ! LSU
sll %g3, 8, %g4 ! IEU1 Group
add %l2, 1, %l2 ! IEU0
st %g0, [%i5 + 0x00] ! LSU
or %g4, 0xff, %g4 ! IEU0 Group
or %g2, %g3, %g2 ! IEU1
st %g0, [%i5 + 0x04] ! LSU
and %g2, %g4, %g2 ! IEU0 Group
st %g0, [%i5 + 0x08] ! LSU
b 3f ! CTI
st %f4, [%i5 + 0x0c] ! LSU Group
2: ld [%i0 + 0x00], %f0 ! LSU Group
ld [%i0 + 0x04], %f1 ! LSU Group
ld [%i0 + 0x08], %f2 ! LSU Group
fmuls %f0, %f8, %f0 ! FGM
st %f0, [%i5 + 0x00] ! LSU Group
fmuls %f1, %f8, %f1 ! FGM
st %f1, [%i5 + 0x04] ! LSU Group
fmuls %f2, %f8, %f2 ! FGM
st %f2, [%i5 + 0x08] ! LSU Group
st %f8, [%i5 + 0x0c] ! LSU Group
3: add %i5, 0x10, %i5 ! IEU1
add %l0, 1, %l0 ! IEU0 Group
add %i2, 1, %i2 ! IEU0 Group
cmp %l0, %l3 ! IEU1 Group
bne 1b ! CTI
add %i0, %l1, %i0 ! IEU0 Group
stb %g2, [%i3] ! LSU
srl %g2, 8, %g3 ! IEU0 Group
cmp %l2, %l3 ! IEU1 Group
bl,a 1f ! CTI
clr %g3 ! IEU0
1: stb %g3, [%i4] ! LSU Group
ret ! CTI Group
restore %i1, 0x0, %o0
.globl _mesa_sparc_cliptest_points4_np
_mesa_sparc_cliptest_points4_np:
save %sp, -64, %sp
call __pc_tramp
sub %o7, (. - one_dot_zero - 4), %g1
add %g1, 0x4, %g1
ld [%i0 + V4F_STRIDE], %l1
ld [%i0 + V4F_COUNT], %l3
LDPTR [%i0 + V4F_START], %i0
ldub [%i3], %g2
ldub [%i4], %g3
sll %g3, 8, %g3
or %g2, %g3, %g2
clr %l2
clr %l0
/* l0: i
* l3: count
* l1: stride
* l2: c
* g2: (tmpAndMask << 8) | tmpOrMask
* g1: clip_table
* i0: from[stride][i]
* i2: clipMask
*/
1: ld [%i0 + 0x0c], %g5 ! LSU Group
ld [%i0 + 0x08], %g4 ! LSU Group
addcc %g5, %g5, %g5 ! IEU1 Group
addx %g0, 0x0, %g3 ! IEU1 Group
addcc %g4, %g4, %g4 ! IEU1 Group
addx %g3, %g3, %g3 ! IEU1 Group
subcc %g5, %g4, %g0 ! IEU1 Group
ld [%i0 + 0x04], %g4 ! LSU Group
addx %g3, %g3, %g3 ! IEU1 Group
addcc %g4, %g4, %g4 ! IEU1 Group
addx %g3, %g3, %g3 ! IEU1 Group
subcc %g5, %g4, %g0 ! IEU1 Group
ld [%i0 + 0x00], %g4 ! LSU Group
addx %g3, %g3, %g3 ! IEU1 Group
addcc %g4, %g4, %g4 ! IEU1 Group
addx %g3, %g3, %g3 ! IEU1 Group
subcc %g5, %g4, %g0 ! IEU1 Group
addx %g3, %g3, %g3 ! IEU1 Group
ldub [%g1 + %g3], %g3 ! LSU Group
cmp %g3, 0 ! IEU1 Group, stall
be 2f ! CTI
stb %g3, [%i2] ! LSU
sll %g3, 8, %g4 ! IEU1 Group
add %l2, 1, %l2 ! IEU0
or %g4, 0xff, %g4 ! IEU0 Group
or %g2, %g3, %g2 ! IEU1
and %g2, %g4, %g2 ! IEU0 Group
2: add %l0, 1, %l0 ! IEU0 Group
add %i2, 1, %i2 ! IEU0 Group
cmp %l0, %l3 ! IEU1 Group
bne 1b ! CTI
add %i0, %l1, %i0 ! IEU0 Group
stb %g2, [%i3] ! LSU
srl %g2, 8, %g3 ! IEU0 Group
cmp %l2, %l3 ! IEU1 Group
bl,a 1f ! CTI
clr %g3 ! IEU0
1: stb %g3, [%i4] ! LSU Group
ret ! CTI Group
restore %i1, 0x0, %o0
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