78 lines
2.5 KiB
C
78 lines
2.5 KiB
C
#include <ultra64.h>
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#include "constants.h"
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#include "game/data/data_000000.h"
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#include "game/data/data_0083d0.h"
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#include "game/data/data_00e460.h"
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#include "game/data/data_0160b0.h"
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#include "game/data/data_01a3a0.h"
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#include "game/data/data_020df0.h"
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#include "game/data/data_02a0e0.h"
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#include "game/data/data_02da90.h"
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#include "gvars/gvars.h"
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#include "lib/rng.h"
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#include "lib/lib_2fa00.h"
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#include "types.h"
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u64 g_RngSeed = 0xab8d9f7781280783;
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GLOBAL_ASM(
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glabel random
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/* 12dc0: 3c048006 */ lui $a0,%hi(g_RngSeed)
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/* 12dc4: dc84ee00 */ ld $a0,%lo(g_RngSeed)($a0)
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/* 12dc8: 3c018006 */ lui $at,%hi(g_RngSeed)
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/* 12dcc: 000437fc */ dsll32 $a2,$a0,0x1f
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/* 12dd0: 00042ff8 */ dsll $a1,$a0,0x1f
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/* 12dd4: 000637fa */ dsrl $a2,$a2,0x1f
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/* 12dd8: 0005283e */ dsrl32 $a1,$a1,0x0
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/* 12ddc: 0004233c */ dsll32 $a0,$a0,0xc
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/* 12de0: 00c53025 */ or $a2,$a2,$a1
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/* 12de4: 0004203e */ dsrl32 $a0,$a0,0x0
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/* 12de8: 00c43026 */ xor $a2,$a2,$a0
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/* 12dec: 0006253a */ dsrl $a0,$a2,0x14
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/* 12df0: 30840fff */ andi $a0,$a0,0xfff
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/* 12df4: 00862026 */ xor $a0,$a0,$a2
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/* 12df8: 0004103c */ dsll32 $v0,$a0,0x0
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/* 12dfc: fc24ee00 */ sd $a0,%lo(g_RngSeed)($at)
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/* 12e00: 03e00008 */ jr $ra
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/* 12e04: 0002103f */ dsra32 $v0,$v0,0x0
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);
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// Commented because ld isn't happy with bitshifting a u64.
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//u32 random(void)
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//{
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// g_RngSeed = ((g_RngSeed << 63) >> 31 | (g_RngSeed << 31) >> 32) ^ (g_RngSeed << 44) >> 32;
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// g_RngSeed = g_RngSeed >> 20 & 0xfff ^ g_RngSeed;
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//
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// return g_RngSeed;
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//}
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GLOBAL_ASM(
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glabel rngSetSeed
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/* 12e08: 64840001 */ daddiu $a0,$a0,0x1
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/* 12e0c: 3c018006 */ lui $at,%hi(g_RngSeed)
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/* 12e10: fc24ee00 */ sd $a0,%lo(g_RngSeed)($at)
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/* 12e14: 03e00008 */ jr $ra
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/* 12e18: 24040000 */ addiu $a0,$zero,0x0
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);
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GLOBAL_ASM(
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glabel func00012e1c
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/* 12e1c: dc870000 */ ld $a3,0x0($a0)
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/* 12e20: 000737fc */ dsll32 $a2,$a3,0x1f
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/* 12e24: 00072ff8 */ dsll $a1,$a3,0x1f
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/* 12e28: 000637fa */ dsrl $a2,$a2,0x1f
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/* 12e2c: 0005283e */ dsrl32 $a1,$a1,0x0
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/* 12e30: 00073b3c */ dsll32 $a3,$a3,0xc
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/* 12e34: 00c53025 */ or $a2,$a2,$a1
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/* 12e38: 0007383e */ dsrl32 $a3,$a3,0x0
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/* 12e3c: 00c73026 */ xor $a2,$a2,$a3
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/* 12e40: 00063d3a */ dsrl $a3,$a2,0x14
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/* 12e44: 30e70fff */ andi $a3,$a3,0xfff
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/* 12e48: 00e63826 */ xor $a3,$a3,$a2
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/* 12e4c: 0007103c */ dsll32 $v0,$a3,0x0
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/* 12e50: fc870000 */ sd $a3,0x0($a0)
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/* 12e54: 03e00008 */ jr $ra
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/* 12e58: 0002103f */ dsra32 $v0,$v0,0x0
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/* 12e5c: 00000000 */ nop
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);
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