First commit

1 files changed, 68 insertions, 0 deletions

diff --git a/libpsn00b/psxgte/scalematrix.s b/libpsn00b/psxgte/scalematrix.s
new file mode 100644
index 0000000..3e83800
--- /dev/null
+++ b/libpsn00b/psxgte/scalematrix.s
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+.set noreorder
+
+.include "gtereg.h"
+.include "inline_s.h"
+
+.section .text
+
+
+.global ScaleMatrix
+.type ScaleMatrix, @function
+ScaleMatrix:
+
+	lwc2	C2_IR0,	0($a1)			# X
+
+	lh		$v0, 2*(0+(3*0))($a0)
+	lh		$v1, 2*(0+(3*1))($a0)
+	mtc2	$v0, C2_IR1
+	lh		$v0, 2*(0+(3*2))($a0)
+	mtc2	$v1, C2_IR2
+	mtc2	$v0, C2_IR3
+
+	nGPF(1)
+
+	mfc2	$v0, C2_IR1
+	mfc2	$v1, C2_IR2
+	sh		$v0, 2*(0+(3*0))($a0)
+	mfc2	$v0, C2_IR3
+	sh		$v1, 2*(0+(3*1))($a0)
+	sh		$v0, 2*(0+(3*2))($a0)
+
+	lwc2	C2_IR0,	4($a1)			# Y
+
+	lh		$v0, 2*(1+(3*0))($a0)
+	lh		$v1, 2*(1+(3*1))($a0)
+	mtc2	$v0, C2_IR1
+	lh		$v0, 2*(1+(3*2))($a0)
+	mtc2	$v1, C2_IR2
+	mtc2	$v0, C2_IR3
+
+	nGPF(1)
+
+	mfc2	$v0, C2_IR1
+	mfc2	$v1, C2_IR2
+	sh		$v0, 2*(1+(3*0))($a0)
+	mfc2	$v0, C2_IR3
+	sh		$v1, 2*(1+(3*1))($a0)
+	sh		$v0, 2*(1+(3*2))($a0)
+
+	lwc2	C2_IR0,	8($a1)			# Z
+
+	lh		$v0, 2*(2+(3*0))($a0)
+	lh		$v1, 2*(2+(3*1))($a0)
+	mtc2	$v0, C2_IR1
+	lh		$v0, 2*(2+(3*2))($a0)
+	mtc2	$v1, C2_IR2
+	mtc2	$v0, C2_IR3
+
+	nGPF(1)
+
+	mfc2	$v0, C2_IR1
+	mfc2	$v1, C2_IR2
+	sh		$v0, 2*(2+(3*0))($a0)
+	mfc2	$v0, C2_IR3
+	sh		$v1, 2*(2+(3*1))($a0)
+	sh		$v0, 2*(2+(3*2))($a0)
+
+	jr		$ra
+	move	$v0, $a0