mirror of
https://gitlab.com/ryandwyer/perfect-dark
synced 2026-07-26 14:30:34 -04:00
Ryan Dwyer
111 lines
3.0 KiB
C
111 lines
3.0 KiB
C
#include <ultra64.h>
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#include "libultra_internal.h"
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#include "constants.h"
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#include "bss.h"
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#include "lib/libc/ll.h"
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#include "lib/lib_4d480.h"
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#include "data.h"
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#include "types.h"
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s32 osPfsDeleteFile(OSPfs *pfs, u16 company_code, u32 game_code, char *game_name, char *ext_name)
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{
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s32 file_no;
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s32 ret;
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__OSInode inode;
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__OSDir dir;
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__OSInodeUnit last_page;
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u8 startpage;
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u8 bank;
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if (company_code == 0 || game_code == 0) {
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return PFS_ERR_INVALID;
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}
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if ((ret = osPfsFindFile(pfs, company_code, game_code, game_name, ext_name, &file_no)) != 0) {
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return ret;
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}
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if (pfs->activebank != 0 && (ret = __osPfsSelectBank(pfs, 0)) != 0) {
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return ret;
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}
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if ((ret = __osContRamRead(pfs->queue, pfs->channel, pfs->dir_table + file_no, (u8*)&dir)) != 0) {
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return ret;
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}
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startpage = dir.start_page.inode_t.page;
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for (bank = dir.start_page.inode_t.bank; bank < pfs->banks;) {
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if ((ret = __osPfsRWInode(pfs, &inode, PFS_READ, bank)) != 0) {
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return ret;
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}
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if ((ret = __osPfsReleasePages(pfs, &inode, startpage, bank, &last_page)) != 0) {
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return ret;
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}
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if ((ret = __osPfsRWInode(pfs, &inode, PFS_WRITE, bank)) != 0) {
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return ret;
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}
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if (last_page.ipage == 1) {
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break;
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}
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bank = last_page.inode_t.bank;
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startpage = last_page.inode_t.page;
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}
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if (bank >= pfs->banks) {
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return PFS_ERR_INCONSISTENT;
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}
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bzero(&dir, sizeof(__OSDir));
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ret = __osContRamWrite(pfs->queue, pfs->channel, pfs->dir_table + file_no, (u8*)&dir, 0);
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return ret;
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}
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GLOBAL_ASM(
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glabel __osPfsReleasePages
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/* 4d658: 27bdfff0 */ addiu $sp,$sp,-16
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/* 4d65c: 30e200ff */ andi $v0,$a3,0xff
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/* 4d660: 30ce00ff */ andi $t6,$a2,0xff
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/* 4d664: 0002c200 */ sll $t8,$v0,0x8
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/* 4d668: afa60018 */ sw $a2,0x18($sp)
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/* 4d66c: afa7001c */ sw $a3,0x1c($sp)
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/* 4d670: 030ec821 */ addu $t9,$t8,$t6
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/* 4d674: a7b9000c */ sh $t9,0xc($sp)
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/* 4d678: 24070003 */ addiu $a3,$zero,0x3
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/* 4d67c: 27a6000c */ addiu $a2,$sp,0xc
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/* 4d680: 27a30008 */ addiu $v1,$sp,0x8
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/* 4d684: 94c10000 */ lhu $at,0x0($a2)
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.L0004d688:
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/* 4d688: a4610000 */ sh $at,0x0($v1)
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/* 4d68c: 93ab000d */ lbu $t3,0xd($sp)
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/* 4d690: 000b6040 */ sll $t4,$t3,0x1
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/* 4d694: 00ac6821 */ addu $t5,$a1,$t4
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/* 4d698: 95a10000 */ lhu $at,0x0($t5)
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/* 4d69c: a4c10000 */ sh $at,0x0($a2)
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/* 4d6a0: 93b90009 */ lbu $t9,0x9($sp)
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/* 4d6a4: 00194840 */ sll $t1,$t9,0x1
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/* 4d6a8: 00a94021 */ addu $t0,$a1,$t1
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/* 4d6ac: a5070000 */ sh $a3,0x0($t0)
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/* 4d6b0: 8c8b0060 */ lw $t3,0x60($a0)
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/* 4d6b4: 97aa000c */ lhu $t2,0xc($sp)
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/* 4d6b8: 93ac000c */ lbu $t4,0xc($sp)
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/* 4d6bc: 014b082a */ slt $at,$t2,$t3
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/* 4d6c0: 54200004 */ bnezl $at,.L0004d6d4
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/* 4d6c4: 8faf0020 */ lw $t7,0x20($sp)
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/* 4d6c8: 504cffef */ beql $v0,$t4,.L0004d688
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/* 4d6cc: 94c10000 */ lhu $at,0x0($a2)
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/* 4d6d0: 8faf0020 */ lw $t7,0x20($sp)
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.L0004d6d4:
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/* 4d6d4: 94c10000 */ lhu $at,0x0($a2)
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/* 4d6d8: 27bd0010 */ addiu $sp,$sp,0x10
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/* 4d6dc: 00001025 */ or $v0,$zero,$zero
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/* 4d6e0: 03e00008 */ jr $ra
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/* 4d6e4: a5e10000 */ sh $at,0x0($t7)
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);
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