Imported pristine psxsdk-20190410 from official repo

1 files changed, 74 insertions, 0 deletions

diff --git a/libmeidogte/mulmatrix0.s b/libmeidogte/mulmatrix0.s
new file mode 100644
index 0000000..874226b
--- /dev/null
+++ b/libmeidogte/mulmatrix0.s
@@ -0,0 +1,74 @@
+.set noreorder
+
+.include "gtereg.h"
+.include "inline_s.h"
+
+.section .text
+
+
+.global MulMatrix0
+.type MulMatrix0, @function
+MulMatrix0:
+
+	# Load m1 to GTE
+	lw		$t0, 0($a0)
+	lw		$t1, 4($a0)
+	ctc2	$t0, $0
+	ctc2	$t1, $1
+	lw		$t0, 8($a0)
+	lw		$t1, 12($a0)
+	lhu		$t2, 16($a0)
+	ctc2	$t0, $2
+	ctc2	$t1, $3
+	ctc2	$t2, $4
+
+	lhu		$t1, 2*(0+(3*1))($a1)		# Load values for first
+	lhu		$t0, 2*(0+(3*0))($a1)		# R11 R21 R31
+	sll		$t1, 16
+	or		$t0, $t1
+	lhu		$t1, 2*(0+(3*2))($a1)
+	mtc2	$t0, C2_VXY0
+	mtc2	$t1, C2_VZ0
+
+	lhu		$t1, 2*(1+(3*1))($a1)		# Load values for second
+	lhu		$t0, 2*(1+(3*0))($a1)		# R12 R22 R32
+	MVMVA(1, 0, 0, 3, 0)				# First multiply
+	sll		$t1, 16
+	or		$t0, $t1
+	lhu		$t1, 2*(1+(3*2))($a1)
+	mtc2	$t0, C2_VXY0
+	mtc2	$t1, C2_VZ0
+
+	mfc2	$t0, C2_IR1					# Store results of first
+	mfc2	$t1, C2_IR2
+	sh		$t0, 2*(0+(3*0))($a2)
+	mfc2	$t0, C2_IR3
+	sh		$t1, 2*(0+(3*1))($a2)
+	sh		$t0, 2*(0+(3*2))($a2)
+
+	lhu		$t1, 2*(2+(3*1))($a1)		# Load values for third
+	lhu		$t0, 2*(2+(3*0))($a1)		# R13 R23 R33
+	MVMVA(1, 0, 0, 3, 0)				# Second multiply
+	sll		$t1, 16
+	or		$t0, $t1
+	lhu		$t1, 2*(2+(3*2))($a1)
+	mtc2	$t0, C2_VXY0
+	mtc2	$t1, C2_VZ0
+
+	mfc2	$t0, C2_IR1					# Store results of second
+	mfc2	$t1, C2_IR2
+	sh		$t0, 2*(1+(3*0))($a2)
+	mfc2	$t0, C2_IR3
+	sh		$t1, 2*(1+(3*1))($a2)
+	sh		$t0, 2*(1+(3*2))($a2)
+	MVMVA(1, 0, 0, 3, 0)				# Third multiply
+
+	mfc2	$t0, C2_IR1					# Store results of third
+	mfc2	$t1, C2_IR2
+	sh		$t0, 2*(2+(3*0))($a2)
+	mfc2	$t0, C2_IR3
+	sh		$t1, 2*(2+(3*1))($a2)
+	sh		$t0, 2*(2+(3*2))($a2)
+
+	jr		$ra
+	move	$v0, $a2