N64ModernRuntime/librecomp/src/math_routines.cpp at 17afeaee6528195e620b7a9e0f2d2bd996148bd5 · N64Recomp/N64ModernRuntime · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
#include <ultramodern/ultramodern.hpp>
#include "recomp.h"

// TODO remove these by implementing the necessary instructions and control flow handling in the recompiler.
// This has already been partially completed.

extern "C" void __udivdi3_recomp(uint8_t * rdram, recomp_context * ctx) {
    uint64_t a = (ctx->r4 << 32) | ((ctx->r5 << 0) & 0xFFFFFFFFu);
    uint64_t b = (ctx->r6 << 32) | ((ctx->r7 << 0) & 0xFFFFFFFFu);
    uint64_t ret = a / b;

    ctx->r2 = (int32_t)(ret >> 32);
    ctx->r3 = (int32_t)(ret >> 0);
}

extern "C" void __divdi3_recomp(uint8_t * rdram, recomp_context * ctx) {
    int64_t a = (ctx->r4 << 32) | ((ctx->r5 << 0) & 0xFFFFFFFFu);
    int64_t b = (ctx->r6 << 32) | ((ctx->r7 << 0) & 0xFFFFFFFFu);
    int64_t ret = a / b;

    ctx->r2 = (int32_t)(ret >> 32);
    ctx->r3 = (int32_t)(ret >> 0);
}

extern "C" void __umoddi3_recomp(uint8_t * rdram, recomp_context * ctx) {
    uint64_t a = (ctx->r4 << 32) | ((ctx->r5 << 0) & 0xFFFFFFFFu);
    uint64_t b = (ctx->r6 << 32) | ((ctx->r7 << 0) & 0xFFFFFFFFu);
    uint64_t ret = a % b;

    ctx->r2 = (int32_t)(ret >> 32);
    ctx->r3 = (int32_t)(ret >> 0);
}

extern "C" void __ull_div_recomp(uint8_t * rdram, recomp_context * ctx) {
    uint64_t a = (ctx->r4 << 32) | ((ctx->r5 << 0) & 0xFFFFFFFFu);
    uint64_t b = (ctx->r6 << 32) | ((ctx->r7 << 0) & 0xFFFFFFFFu);
    uint64_t ret = a / b;

    ctx->r2 = (int32_t)(ret >> 32);
    ctx->r3 = (int32_t)(ret >> 0);
}

extern "C" void __ll_div_recomp(uint8_t * rdram, recomp_context * ctx) {
    int64_t a = (ctx->r4 << 32) | ((ctx->r5 << 0) & 0xFFFFFFFFu);
    int64_t b = (ctx->r6 << 32) | ((ctx->r7 << 0) & 0xFFFFFFFFu);
    int64_t ret = a / b;

    ctx->r2 = (int32_t)(ret >> 32);
    ctx->r3 = (int32_t)(ret >> 0);
}

extern "C" void __ll_mul_recomp(uint8_t * rdram, recomp_context * ctx) {
    uint64_t a = (ctx->r4 << 32) | ((ctx->r5 << 0) & 0xFFFFFFFFu);
    uint64_t b = (ctx->r6 << 32) | ((ctx->r7 << 0) & 0xFFFFFFFFu);
    uint64_t ret = a * b;

    ctx->r2 = (int32_t)(ret >> 32);
    ctx->r3 = (int32_t)(ret >> 0);
}

extern "C" void __ull_rem_recomp(uint8_t * rdram, recomp_context * ctx) {
    uint64_t a = (ctx->r4 << 32) | ((ctx->r5 << 0) & 0xFFFFFFFFu);
    uint64_t b = (ctx->r6 << 32) | ((ctx->r7 << 0) & 0xFFFFFFFFu);
    uint64_t ret = a % b;

    ctx->r2 = (int32_t)(ret >> 32);
    ctx->r3 = (int32_t)(ret >> 0);
}

extern "C" void __ull_to_d_recomp(uint8_t * rdram, recomp_context * ctx) {
    uint64_t a = (ctx->r4 << 32) | ((ctx->r5 << 0) & 0xFFFFFFFFu);
    double ret = (double)a;

    ctx->f0.d = ret;
}

extern "C" void __ull_to_f_recomp(uint8_t * rdram, recomp_context * ctx) {
    uint64_t a = (ctx->r4 << 32) | ((ctx->r5 << 0) & 0xFFFFFFFFu);
    float ret = (float)a;

    ctx->f0.fl = ret;
}

extern "C" void __ull_rshift_recomp(uint8_t * rdram, recomp_context * ctx) {
    uint64_t a = (ctx->r4 << 32) | ((ctx->r5 << 0) & 0xFFFFFFFFu);
    uint64_t b = (ctx->r6 << 32) | ((ctx->r7 << 0) & 0xFFFFFFFFu);
    uint64_t ret = a >> b;

    ctx->r2 = (int32_t)(ret >> 32);
    ctx->r3 = (int32_t)(ret >> 0);
}

extern "C" void __ll_to_f_recomp(uint8_t * rdram, recomp_context * ctx) {
    int64_t a = (ctx->r4 << 32) | ((ctx->r5 << 0) & 0xFFFFFFFFu);
    float ret = (float)a;

    ctx->f0.fl = ret;
}

extern "C" void __f_to_ll_recomp(uint8_t * rdram, recomp_context * ctx) {
    int64_t ret = (int64_t)ctx->f12.fl;

    ctx->r2 = (int32_t)(ret >> 32);
    ctx->r3 = (int32_t)(ret >> 0);
}

extern "C" void __ll_lshift_recomp(uint8_t * rdram, recomp_context * ctx) {
    uint64_t a = (ctx->r4 << 32) | ((ctx->r5 << 0) & 0xFFFFFFFFu);
    uint64_t b = (ctx->r6 << 32) | ((ctx->r7 << 0) & 0xFFFFFFFFu);
    uint64_t ret = a << b;

    ctx->r2 = (int32_t)(ret >> 32);
    ctx->r3 = (int32_t)(ret >> 0);
}