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Decompile __osSpRawStartDma

This commit is contained in:
Ryan Dwyer 2021-01-26 20:10:58 +10:00
parent 758a1a31f6
commit 6a5a67c882
6 changed files with 21 additions and 63 deletions
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2
ld/libfiles.inc
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@ -135,7 +135,7 @@
build/ROMID/lib/ultra/os/virtualtophysical.o (section); \
build/ROMID/lib/ultra/io/spsetstat.o (section); \
build/ROMID/lib/ultra/io/spsetpc.o (section); \
build/ROMID/lib/lib_4b550.o (section); \
build/ROMID/lib/ultra/io/sprawdma.o (section); \
build/ROMID/lib/ultra/io/sp.o (section); \
build/ROMID/lib/ultra/io/contramwrite.o (section); \
build/ROMID/lib/ultra/io/contramread.o (section); \

6
src/include/lib/lib_4b550.h
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@ -1,6 +0,0 @@
#ifndef _IN_LIB_LIB_4B550_H
#define _IN_LIB_LIB_4B550_H
#include <ultra64.h>
#include "types.h"
#endif

2
src/include/libultra_internal.h
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@ -37,7 +37,7 @@ u32 __osSpGetStatus();
s32 __osSpSetPc(u32);
s32 __osSpDeviceBusy();
s32 __osSiDeviceBusy();
s32 __osSpRawStartDma(u32 dir, u32 sp_ptr, void *dram_ptr, size_t size);
s32 __osSpRawStartDma(s32 direction, u32 devAddr, void *dramAddr, u32 size);
void __osViInit();
OSViContext * __osViGetCurrentContext();
void __osViSwapContext();

1
src/lib/lib_05e40.c
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@ -10,7 +10,6 @@
#include "gvars/gvars.h"
#include "lib/lib_05e40.h"
#include "lib/lib_4b170.h"
#include "lib/lib_4b550.h"
#include "types.h"
#include "libultra_internal.h"

54
src/lib/lib_4b550.c
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@ -1,54 +0,0 @@
#include <ultra64.h>
#include "constants.h"
#include "game/data/data_000000.h"
#include "game/data/data_0083d0.h"
#include "game/data/data_00e460.h"
#include "game/data/data_0160b0.h"
#include "game/data/data_01a3a0.h"
#include "game/data/data_020df0.h"
#include "game/data/data_02da90.h"
#include "gvars/gvars.h"
#include "types.h"
GLOBAL_ASM(
glabel __osSpRawStartDma
/* 4b550: 27bdffe8 */ addiu $sp,$sp,-24
/* 4b554: afbf0014 */ sw $ra,0x14($sp)
/* 4b558: afa40018 */ sw $a0,0x18($sp)
/* 4b55c: afa5001c */ sw $a1,0x1c($sp)
/* 4b560: afa60020 */ sw $a2,0x20($sp)
/* 4b564: 0c012d78 */ jal __osSpDeviceBusy
/* 4b568: afa70024 */ sw $a3,0x24($sp)
/* 4b56c: 10400003 */ beqz $v0,.L0004b57c
/* 4b570: 8fae001c */ lw $t6,0x1c($sp)
/* 4b574: 10000013 */ b .L0004b5c4
/* 4b578: 2402ffff */ addiu $v0,$zero,-1
.L0004b57c:
/* 4b57c: 3c0fa404 */ lui $t7,0xa404
/* 4b580: adee0000 */ sw $t6,0x0($t7)
/* 4b584: 0c012d20 */ jal osVirtualToPhysical
/* 4b588: 8fa40020 */ lw $a0,0x20($sp)
/* 4b58c: 3c18a404 */ lui $t8,0xa404
/* 4b590: af020004 */ sw $v0,0x4($t8)
/* 4b594: 8fb90018 */ lw $t9,0x18($sp)
/* 4b598: 8fab0024 */ lw $t3,0x24($sp)
/* 4b59c: 00001025 */ or $v0,$zero,$zero
/* 4b5a0: 17200006 */ bnez $t9,.L0004b5bc
/* 4b5a4: 256cffff */ addiu $t4,$t3,-1
/* 4b5a8: 8fa80024 */ lw $t0,0x24($sp)
/* 4b5ac: 3c0aa404 */ lui $t2,0xa404
/* 4b5b0: 2509ffff */ addiu $t1,$t0,-1
/* 4b5b4: 10000003 */ b .L0004b5c4
/* 4b5b8: ad49000c */ sw $t1,0xc($t2)
.L0004b5bc:
/* 4b5bc: 3c0da404 */ lui $t5,0xa404
/* 4b5c0: adac0008 */ sw $t4,0x8($t5)
.L0004b5c4:
/* 4b5c4: 8fbf0014 */ lw $ra,0x14($sp)
/* 4b5c8: 27bd0018 */ addiu $sp,$sp,0x18
/* 4b5cc: 03e00008 */ jr $ra
/* 4b5d0: 00000000 */ nop
/* 4b5d4: 00000000 */ nop
/* 4b5d8: 00000000 */ nop
/* 4b5dc: 00000000 */ nop
);

19
src/lib/ultra/io/sprawdma.c Normal file
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@ -0,0 +1,19 @@
#include "libultra_internal.h"
s32 __osSpRawStartDma(s32 direction, u32 devAddr, void *dramAddr, u32 size)
{
if (__osSpDeviceBusy()) {
return -1;
}
IO_WRITE(SP_MEM_ADDR_REG, devAddr);
IO_WRITE(SP_DRAM_ADDR_REG, osVirtualToPhysical(dramAddr));
if (direction == OS_READ) {
IO_WRITE(SP_WR_LEN_REG, size - 1);
} else {
IO_WRITE(SP_RD_LEN_REG, size - 1);
}
return 0;
}