88 lines
1.2 KiB
ArmAsm
88 lines
1.2 KiB
ArmAsm
#include <asm.h>
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#
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# r3 chan
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# r4 old
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# r5 new
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# r6 cb
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CARDRename:
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mflr %r8
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cmpwi %r3, 0
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bne NoCard
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#send cmd to DM
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mr %r12, %r6
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li %r0, 0
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lis %r7, 0xC000
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addi %r7, %r7, 0x2F60
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#IPC area
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dcbi %r0, %r7
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addi %r7, %r7, 0x20
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dcbi %r0, %r7
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#cache workaround for the filename
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li %r3, 8
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mtctr %r3
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lis %r3, 0xC000
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invalidloopA:
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lwz %r0, 0(%r4)
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stw %r0, 0x17C0(%r3)
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addi %r4, %r4, 4
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addi %r3, %r3, 4
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bdnz invalidloopA
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#cache workaround for the filename
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li %r3, 8
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mtctr %r3
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lis %r3, 0xC000
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invalidloopB:
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lwz %r0, 0(%r5)
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stw %r0, 0x17E0(%r3)
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addi %r5, %r5, 4
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addi %r3, %r3, 4
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bdnz invalidloopB
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lis %r7, 0xC000
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lis %r0, 0xCB00
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stw %r0, 0x2F60(%r7)
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li %r0, 3
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stw %r0, 0x2F78(%r7)
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ready_loop:
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lwz %r0, 0x2F78(%r7)
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cmpwi %r0, 3
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beq ready_loop
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wait_loop:
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lwz %r0, 0x2F9C(%r7)
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andi. %r0, %r0, 0x14
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cmpwi %r0, 0
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beq wait_loop
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cmpwi %r12, 0
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beq skip_cb
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mtlr %r12
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li %r3, 0
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lwz %r4, 0x2F94(%r7)
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blrl
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skip_cb:
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lwz %r3, 0x2F94(%r7)
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b end
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NoCard:
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li %r3, -3
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end:
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mr %r4, %r3
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mtlr %r8
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blr
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