falso
/
perfect_dark
mirror of https://github.com/n64decomp/perfect_dark.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Decompile osAiSetNextBuffer

This commit is contained in:
Ryan Dwyer 2021-03-16 19:15:46 +10:00
parent 722693becb
commit aafd64886c
1 changed files with 22 additions and 75 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

97
src/lib/ultra/io/aisetnextbuf.c
View File

@ -1,79 +1,26 @@
#include <ultra64.h>
u32 var80060990 = 0;
s32 osAiSetNextBuffer(void *bufPtr, u32 size)
{
static u8 hdwrBugFlag = 0;
char *bptr = bufPtr;
GLOBAL_ASM(
glabel osAiSetNextBuffer
/* 4e3c0: 27bdffe0 */ addiu $sp,$sp,-32
/* 4e3c4: 3c0f8006 */ lui $t7,%hi(var80060990)
/* 4e3c8: 91ef0990 */ lbu $t7,%lo(var80060990)($t7)
/* 4e3cc: afa40020 */ sw $a0,0x20($sp)
/* 4e3d0: 8fae0020 */ lw $t6,0x20($sp)
/* 4e3d4: afbf0014 */ sw $ra,0x14($sp)
/* 4e3d8: afa50024 */ sw $a1,0x24($sp)
/* 4e3dc: 11e00003 */ beqz $t7,.L0004e3ec
/* 4e3e0: afae001c */ sw $t6,0x1c($sp)
/* 4e3e4: 25d8e000 */ addiu $t8,$t6,-8192
/* 4e3e8: afb8001c */ sw $t8,0x1c($sp)
.L0004e3ec:
/* 4e3ec: 8fb90020 */ lw $t9,0x20($sp)
/* 4e3f0: 8fa80024 */ lw $t0,0x24($sp)
/* 4e3f4: 03284821 */ addu $t1,$t9,$t0
/* 4e3f8: 312a1fff */ andi $t2,$t1,0x1fff
/* 4e3fc: 15400005 */ bnez $t2,.L0004e414
/* 4e400: 00000000 */ nop
/* 4e404: 240b0001 */ addiu $t3,$zero,0x1
/* 4e408: 3c018006 */ lui $at,%hi(var80060990)
/* 4e40c: 10000003 */ b .L0004e41c
/* 4e410: a02b0990 */ sb $t3,%lo(var80060990)($at)
.L0004e414:
/* 4e414: 3c018006 */ lui $at,%hi(var80060990)
/* 4e418: a0200990 */ sb $zero,%lo(var80060990)($at)
.L0004e41c:
/* 4e41c: 0c0147b0 */ jal __osAiDeviceBusy
/* 4e420: 00000000 */ nop
/* 4e424: 10400003 */ beqz $v0,.L0004e434
/* 4e428: 00000000 */ nop
/* 4e42c: 10000009 */ b .L0004e454
/* 4e430: 2402ffff */ addiu $v0,$zero,-1
.L0004e434:
/* 4e434: 0c012d20 */ jal osVirtualToPhysical
/* 4e438: 8fa4001c */ lw $a0,0x1c($sp)
/* 4e43c: 3c0ca450 */ lui $t4,0xa450
/* 4e440: ad820000 */ sw $v0,0x0($t4)
/* 4e444: 8fad0024 */ lw $t5,0x24($sp)
/* 4e448: 3c0fa450 */ lui $t7,0xa450
/* 4e44c: 00001025 */ or $v0,$zero,$zero
/* 4e450: aded0004 */ sw $t5,0x4($t7)
.L0004e454:
/* 4e454: 8fbf0014 */ lw $ra,0x14($sp)
/* 4e458: 27bd0020 */ addiu $sp,$sp,0x20
/* 4e45c: 03e00008 */ jr $ra
/* 4e460: 00000000 */ nop
);
if (hdwrBugFlag != 0) {
bptr -= 0x2000;
}
// Mismatch: Needs data relocation
//s32 osAiSetNextBuffer(void *bufPtr, u32 size)
//{
// static u8 hdwrBugFlag = 0;
// char *bptr = bufPtr;
//
// if (hdwrBugFlag != 0) {
// bptr -= 0x2000;
// }
//
// if ((((u32)bufPtr + size) & 0x1fff) == 0) {
// hdwrBugFlag = 1;
// } else {
// hdwrBugFlag = 0;
// }
//
// if (__osAiDeviceBusy()) {
// return -1;
// }
//
// IO_WRITE(AI_DRAM_ADDR_REG, osVirtualToPhysical(bptr));
// IO_WRITE(AI_LEN_REG, size);
//
// return 0;
//}
if ((((u32)bufPtr + size) & 0x1fff) == 0) {
hdwrBugFlag = 1;
} else {
hdwrBugFlag = 0;
}
if (__osAiDeviceBusy()) {
return -1;
}
IO_WRITE(AI_DRAM_ADDR_REG, osVirtualToPhysical(bptr));
IO_WRITE(AI_LEN_REG, size);
return 0;
}