Imported pristine psxsdk-20190410 from official repo

1 files changed, 96 insertions, 0 deletions

diff --git a/libpsx/src/exc1.s b/libpsx/src/exc1.s
new file mode 100644
index 0000000..379ed6d
--- /dev/null
+++ b/libpsx/src/exc1.s
@@ -0,0 +1,96 @@
+
+.text
+.global __psxsdk_exception_manager
+
+__psxsdk_exception_manager:
+
+# Save registers on stack
+
+.set noat
+	addi $sp, -120
+.set noat
+	sw $at, 0($sp)
+	mfhi $at
+	sw $at, 112($sp)
+	mflo $at
+	sw $at, 116($sp)
+.set at
+	sw $v0, 4($sp)
+	sw $v1, 8($sp)
+	sw $a0, 12($sp)
+	sw $a1, 16($sp)
+	sw $a2, 20($sp)
+	sw $a3, 24($sp)
+	sw $t0,  28($sp)
+	sw $t1,  32($sp)
+	sw $t2,  36($sp)
+	sw $t3, 40($sp)
+	sw $t4, 44($sp)
+	sw $t5, 48($sp)
+	sw $t6, 52($sp)
+	sw $t7, 56($sp)
+	sw $s0, 60($sp)
+	sw $s1, 64($sp)
+	sw $s2, 68($sp)
+	sw $s3, 72($sp)
+	sw $s4, 76($sp)
+	sw $s5, 80($sp)
+	sw $s6, 84($sp)
+	sw $s7, 88($sp)
+	sw $t8, 92($sp)
+	sw $t9, 96($sp)
+	sw $gp, 100($sp)
+	sw $fp, 104($sp)
+	sw $ra, 108($sp)	
+	
+# Execute real exception handler
+	jal __psxsdk_real_exception_handler
+	nop
+
+# Load registers from stack
+
+.set noat
+	lw $at, 112($sp)
+	nop
+	mthi $at
+	lw $at, 116($sp)
+	nop
+	mtlo $at
+	lw $at, 0($sp)
+.set at
+	lw $v0, 4($sp)
+	lw $v1, 8($sp)
+	lw $a0, 12($sp)
+	lw $a1, 16($sp)
+	lw $a2, 20($sp)
+	lw $a3, 24($sp)
+	lw $t0, 28($sp)
+	lw $t1, 32($sp)
+	lw $t2, 36($sp)
+	lw $t3, 40($sp)
+	lw $t4, 44($sp)
+	lw $t5, 48($sp)
+	lw $t6, 52($sp)
+	lw $t7, 56($sp)
+	lw $s0, 60($sp)
+	lw $s1, 64($sp)
+	lw $s2, 68($sp)
+	lw $s3, 72($sp)
+	lw $s4, 76($sp)
+	lw $s5, 80($sp)
+	lw $s6, 84($sp)
+	lw $s7, 88($sp)
+	lw $t8, 92($sp)
+	lw $t9, 96($sp)
+	lw $gp, 100($sp)
+	lw $fp, 104($sp)
+	lw $ra, 108($sp)
+	addiu $sp, 120		
+	
+# Get exception return address..
+	mfc0 $k0, $14
+# Exit from exception handler
+.set noreorder # Do not let the assembler fill the delay slot!
+	jr $k0
+	rfe
+.set reorder # The assembler can fill the delay slot again.