SPU Isolated Modules Reverse Engineering: Difference between revisions
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| 0x1440 || debug_print || As the name already states... | | 0x1440 || debug_print || As the name already states... | ||
|- | |- | ||
| 0x3168 || | | 0x30c0 || do_dma || Used to dma data in and out of the isolated module's LS. | ||
|- | |||
| 0x3168 || write_tag_mask_bit || This function has one argument ($4). | |||
|} | |} | ||
==== Disasm ==== | ==== Disasm ==== | ||
===== | ===== write_tag_mask_bit ===== | ||
//( | //(tag_mask_bit:$4) | ||
{ | { | ||
//3168: 40 80 00 02 il $2,0 //Update immediately, unconditional. | //3168: 40 80 00 02 il $2,0 //Update immediately, unconditional. | ||
| Line 40: | Line 42: | ||
//3180: 0b 61 01 86 shl $6,$3,$4 | //3180: 0b 61 01 86 shl $6,$3,$4 | ||
//3184: 21 a0 0b 06 wrch $MFC_WrTagMask,$6 | //3184: 21 a0 0b 06 wrch $MFC_WrTagMask,$6 | ||
wrch(MFC_WrTagMask, 1 << | wrch(MFC_WrTagMask, 1 << tag_mask_bit); | ||
//3188: 40 80 01 03 il $3,2 //Update tag status if or when all enabled tag groups have “no outstanding operation” status. | //3188: 40 80 01 03 il $3,2 //Update tag status if or when all enabled tag groups have “no outstanding operation” status. | ||
//318c: 21 a0 0b 83 wrch $MFC_WrTagUpdate,$3 | //318c: 21 a0 0b 83 wrch $MFC_WrTagUpdate,$3 | ||
Revision as of 19:09, 25 February 2011
aim_spu_module
It is used to retrieve the device type, device id, open psid and the pscode from the EID data that is passed in.
Debug messages
| Address | Message |
| 0x36f0 | "(spu)start aim spu module!\n" |
| 0x3710 | "(spu) PU DMA area start address is not align 16byte\n" |
| 0x3750 | "(spu) PU EID area start address is not align 16byte\n" |
| 0x3790 | "(spu) PU DMA area size is not equall to AIM_DMA_SIZE\n" |
Functions
| Address | Name | Info |
| 0x1440 | debug_print | As the name already states... |
| 0x30c0 | do_dma | Used to dma data in and out of the isolated module's LS. |
| 0x3168 | write_tag_mask_bit | This function has one argument ($4). |
Disasm
write_tag_mask_bit
//(tag_mask_bit:$4)
{
//3168: 40 80 00 02 il $2,0 //Update immediately, unconditional.
//316c: 21 a0 0b 82 wrch $MFC_WrTagUpdate,$2
wrch(MFC_WrTagUpdate, 0);
//3170: 01 e0 0b 83 rchcnt $3,$MFC_WrTagUpdate
//3174: 7c 00 41 85 ceqi $5,$3,1
//3178: 20 7f ff 05 brz $5,0x3170 # 3170
while(rchcnt(MFC_WrTagUpdate) != 1);
//317c: 01 a0 0c 02 rdch $2,$MFC_RdTagStat
$2 = rdch(MFC_RdTagStat);
//3180: 0b 61 01 86 shl $6,$3,$4
//3184: 21 a0 0b 06 wrch $MFC_WrTagMask,$6
wrch(MFC_WrTagMask, 1 << tag_mask_bit);
//3188: 40 80 01 03 il $3,2 //Update tag status if or when all enabled tag groups have “no outstanding operation” status.
//318c: 21 a0 0b 83 wrch $MFC_WrTagUpdate,$3
wrch(MFC_WrTagUpdate, 2);
//3190: 01 a0 0c 02 rdch $2,$MFC_RdTagStat
$2 = rdch(MFC_RdTagStat);
//3194: 35 00 00 00 bi $lr
return;
}