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| author | Treeki <treeki@gmail.com> | 2011-03-12 23:17:12 +0100 |
|---|---|---|
| committer | Treeki <treeki@gmail.com> | 2011-03-12 23:17:12 +0100 |
| commit | 7d4e4c0b34a613dd3c0220475ae4e448197522c1 (patch) | |
| tree | 4f5cee367de3fdef4f9a7c84af59ffe76a2bb1c3 /src/layoutlib.S | |
| download | kamek-7d4e4c0b34a613dd3c0220475ae4e448197522c1.tar.gz kamek-7d4e4c0b34a613dd3c0220475ae4e448197522c1.zip | |
initial commit. now I can start playing with stuff!
Diffstat (limited to '')
| -rw-r--r-- | src/layoutlib.S | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/src/layoutlib.S b/src/layoutlib.S new file mode 100644 index 0000000..2fae70a --- /dev/null +++ b/src/layoutlib.S @@ -0,0 +1,131 @@ +.extern LayoutHelper_Link
+
+#ifndef __MWERKS__
+.extern _Z8LoadFileP10FileHandlePc
+.extern _Z8FreeFileP10FileHandle
+#define LoadFileFunc _Z8LoadFileP10FileHandlePc
+#define FreeFileFunc _Z8FreeFileP10FileHandle
+.set r0,0; .set r1,1; .set r2,2; .set r3,3; .set r4,4
+.set r5,5; .set r6,6; .set r7,7; .set r8,8; .set r9,9
+.set r10,10; .set r11,11; .set r12,12; .set r13,13; .set r14,14
+.set r15,15; .set r16,16; .set r17,17; .set r18,18; .set r19,19
+.set r20,20; .set r21,21; .set r22,22; .set r23,23; .set r24,24
+.set r25,25; .set r26,26; .set r27,27; .set r28,28; .set r29,29
+.set r30,30; .set r31,31; .set f0,0; .set f2,2; .set f3,3
+#else
+.extern LoadFile__FP10FileHandlePCc
+.extern FreeFile__FP10FileHandle
+#define LoadFileFunc LoadFile__FP10FileHandlePCc
+#define FreeFileFunc FreeFile__FP10FileHandle
+#endif
+
+.text
+
+.set sp,1
+.set rtoc,2
+.set this,31
+
+
+
+
+.global EmbeddedLayout_LoadArc
+EmbeddedLayout_LoadArc:
+ # stack setup
+ stwu sp, -0x20(sp)
+ mflr r0
+ stw r0, 0x24(sp)
+ stw r31, 0x1C(sp)
+ stw r30, 0x18(sp)
+
+ # r31 is a pointer to the LayoutHelper (must be converted)
+ # r30 stores the filename
+ addi r31, r3, 0xAC
+ mr r30, r4
+
+ # check to see if an arc has already been loaded
+ lwz r0, 0xBC(r3)
+ cmpwi r0, 0
+ bne return_0
+
+ # ok, no
+ # create a FileHandle where a NSMBWFile would be
+ # don't know if this will work but it's worth a try
+ addi r3, r31, 0xC0
+ mr r4, r30
+ bl LoadFileFunc
+
+ # check retval
+ cmpwi r3, 0
+ stw r3, 0xBC(r31)
+ beq return_0
+
+ # link it
+ mr r4, r3
+ mr r3, r31
+ lis r5, arcString@h
+ ori r5, r5, arcString@l
+ bl LayoutHelper_Link
+
+ # now add a pointer to the LayoutHelper into the Layout at offset 0x84
+ # turn r3 into an EmbeddedLayout pointer
+ subi r3, r31, 0xAC
+ stw r31, 0x84(r3)
+
+ b return_1
+
+return_0:
+ li r3, 0
+ b return
+
+return_1:
+ li r3, 1
+
+return:
+ lwz r30, 0x18(sp)
+ lwz r31, 0x1C(sp)
+ lwz r0, 0x24(sp)
+ mtlr r0
+ addi sp, sp, 0x20
+ blr
+
+.align 4
+
+.global EmbeddedLayout_FreeArc
+EmbeddedLayout_FreeArc:
+ # stack setup
+ stwu sp, -0x10(sp)
+ mflr r0
+ stw r0, 0x14(sp)
+ stw r31, 0xC(sp)
+
+ # r31 is a pointer to the LayoutHelper (must be converted)
+ addi r31, r3, 0xAC
+
+ # - if an arc has been loaded, then free the NSMBWFile
+ lwz r0, 0xBC(r3)
+ cmpwi r0, 0
+ beq xreturn_1
+
+ # no, so free it
+ addi r3, r31, 0xC0
+ bl FreeFileFunc
+
+ li r3, 0
+ stw r3, 0xBC(r31)
+
+xreturn_1:
+ li r3, 1
+ lwz r31, 0xC(sp)
+ lwz r0, 0x14(sp)
+ mtlr r0
+ addi sp, sp, 0x10
+ blr
+
+
+
+.data
+arcString:
+ .string "arc"
+
+.align 4
+
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