minor cleanup

kernel.asm

@@ -40,7 +40,7 @@ Start:
 
     // enable CPU interrupts.
     mfc0    t1, CP0_Status
-    ori     t1, t1, CP0_STATUS_IM_ALL | CP0_STATUS_IE
+    ori     t1, CP0_STATUS_IM_ALL | CP0_STATUS_IE
     mtc0    t1, CP0_Status
 
     // enable even more interrupts.
@@ -74,7 +74,7 @@ Start:
 
     // SP defaults to RSP instruction memory: 0xA4001FF0
     // we can do better than that.
-    li      sp, K_STACK_INIT
+    la      sp, K_STACK_INIT
     // SP should always be 8-byte aligned
     // so that SD and LD instructions don't fail on it.
     // we also need 4 empty words for storing

main.asm

@@ -23,9 +23,11 @@ if origin() != 0x1000 {
 include "kernel.asm"
 
 Main:
-    lui     s0, MAIN_BASE
 
 if 0 {
+DecompImage:
+    lui     s0, MAIN_BASE
+
     nop; nop; nop; nop
     mfc0    t0, CP0_Count
     sw      t0, MAIN_COUNTS+0(s0)
@@ -48,14 +50,11 @@ if 0 {
 
     jal     PokeDataCache
     nop
-}
 
     lui     a0, MAIN_BASE
+    jal     MainDumpWrite
     lli     a1, 0x20
-    ori     a2, a0, MAIN_XXD
-    jal     DumpAndWrite
-    lli     a3, 0x20 * 4
-    WriteString(KS_Newline)
+}
 
 Test3D:
     // write the jump to our actual commands
@@ -107,7 +106,6 @@ Start3D:
     lui     a0, SP_BASE
     lli     t0, SP_INT_ON_BREAK_SET | SP_SINGLE_STEP_CLR | SP_BREAK_CLR | SP_HALT_CLR
     sw      t0, SP_STATUS(a0)
-    nop
 
     SetIntMask()
 
@@ -154,6 +152,24 @@ if HICOLOR {
     jr      ra
     nop
 
+MainDumpWrite:
+    subiu   sp, 0x18
+    sw      ra, 0x10(sp)
+
+    lui     a2, MAIN_BASE
+    ori     a2, MAIN_XXD
+    jal     DumpAndWrite // a0,a1 passthru
+    lli     a3, 0x200
+    WriteString(KS_Newline)
+
+    lw      ra, 0x10(sp)
+    jr      ra
+    addiu   sp, 0x18
+
+Die:
+    j       Die
+    nop
+
 include "lzss.baku.unsafe.asm"
 include "dlist.asm"
 include "task.asm"

task.asm

@@ -1,6 +1,6 @@
 PushVideoTask:
     // a0: Task RDRAM Pointer (size: 0x40) (should probably be row-aligned)
-    subiu   sp, sp, 0x18
+    subiu   sp, 0x18
     sw      ra, 0x10(sp)
 
     lli     t0, 1 // mode: video
@@ -46,11 +46,11 @@ PushVideoTask:
 
     li      t9, ADDR_MASK
     jal     PushRSPTask
-    and     a0, a0, t9
+    and     a0, t9
 
     lw      ra, 0x10(sp)
     jr      ra
-    addiu   sp, sp, 0x18
+    addiu   sp, 0x18
 
 PushRSPTask:
     lli     t3, 0x40 - 1 // DMA quirk