]>
Commit | Line | Data |
---|---|---|
e8af50a3 FB |
1 | #include <math.h> |
2 | #include <fenv.h> | |
3 | #include "exec.h" | |
4 | ||
a0c4cb4a FB |
5 | #ifdef USE_INT_TO_FLOAT_HELPERS |
6 | void do_fitos(void) | |
7 | { | |
8 | FT0 = (float) *((int32_t *)&FT1); | |
9 | } | |
10 | ||
11 | void do_fitod(void) | |
12 | { | |
13 | DT0 = (double) *((int32_t *)&FT1); | |
14 | } | |
15 | #endif | |
16 | ||
17 | void do_fabss(void) | |
e8af50a3 FB |
18 | { |
19 | FT0 = fabsf(FT1); | |
20 | } | |
21 | ||
a0c4cb4a | 22 | void do_fsqrts(void) |
e8af50a3 FB |
23 | { |
24 | FT0 = sqrtf(FT1); | |
25 | } | |
26 | ||
a0c4cb4a | 27 | void do_fsqrtd(void) |
e8af50a3 FB |
28 | { |
29 | DT0 = sqrt(DT1); | |
30 | } | |
31 | ||
a0c4cb4a | 32 | void do_fcmps (void) |
e8af50a3 FB |
33 | { |
34 | if (isnan(FT0) || isnan(FT1)) { | |
35 | T0 = FSR_FCC1 | FSR_FCC0; | |
36 | } else if (FT0 < FT1) { | |
37 | T0 = FSR_FCC0; | |
38 | } else if (FT0 > FT1) { | |
39 | T0 = FSR_FCC1; | |
40 | } else { | |
41 | T0 = 0; | |
42 | } | |
43 | env->fsr = T0; | |
44 | } | |
45 | ||
a0c4cb4a | 46 | void do_fcmpd (void) |
e8af50a3 FB |
47 | { |
48 | if (isnan(DT0) || isnan(DT1)) { | |
49 | T0 = FSR_FCC1 | FSR_FCC0; | |
50 | } else if (DT0 < DT1) { | |
51 | T0 = FSR_FCC0; | |
52 | } else if (DT0 > DT1) { | |
53 | T0 = FSR_FCC1; | |
54 | } else { | |
55 | T0 = 0; | |
56 | } | |
57 | env->fsr = T0; | |
58 | } | |
59 | ||
a0c4cb4a | 60 | void helper_ld_asi(int asi, int size, int sign) |
e8af50a3 FB |
61 | { |
62 | switch(asi) { | |
63 | case 3: /* MMU probe */ | |
64 | T1 = 0; | |
65 | return; | |
66 | case 4: /* read MMU regs */ | |
67 | { | |
68 | int temp, reg = (T0 >> 8) & 0xf; | |
69 | ||
70 | temp = env->mmuregs[reg]; | |
71 | if (reg == 3 || reg == 4) /* Fault status, addr cleared on read*/ | |
72 | env->mmuregs[reg] = 0; | |
73 | T1 = temp; | |
74 | } | |
75 | return; | |
76 | case 0x20 ... 0x2f: /* MMU passthrough */ | |
77 | { | |
78 | int temp; | |
79 | ||
80 | cpu_physical_memory_read(T0, (void *) &temp, size); | |
81 | bswap32s(&temp); | |
82 | T1 = temp; | |
83 | } | |
84 | return; | |
85 | default: | |
86 | T1 = 0; | |
87 | return; | |
88 | } | |
89 | } | |
90 | ||
a0c4cb4a | 91 | void helper_st_asi(int asi, int size, int sign) |
e8af50a3 FB |
92 | { |
93 | switch(asi) { | |
94 | case 3: /* MMU flush */ | |
95 | return; | |
96 | case 4: /* write MMU regs */ | |
97 | { | |
98 | int reg = (T0 >> 8) & 0xf; | |
99 | if (reg == 0) { | |
100 | env->mmuregs[reg] &= ~(MMU_E | MMU_NF); | |
101 | env->mmuregs[reg] |= T1 & (MMU_E | MMU_NF); | |
102 | } else | |
103 | env->mmuregs[reg] = T1; | |
104 | return; | |
105 | } | |
106 | case 0x20 ... 0x2f: /* MMU passthrough */ | |
107 | { | |
108 | int temp = T1; | |
109 | ||
110 | bswap32s(&temp); | |
111 | cpu_physical_memory_write(T0, (void *) &temp, size); | |
112 | } | |
113 | return; | |
114 | default: | |
115 | return; | |
116 | } | |
117 | } | |
118 | ||
8d5f07fa FB |
119 | #if 0 |
120 | void do_ldd_raw(uint32_t addr) | |
121 | { | |
122 | T1 = ldl_raw((void *) addr); | |
123 | T0 = ldl_raw((void *) (addr + 4)); | |
124 | } | |
125 | ||
126 | #if !defined(CONFIG_USER_ONLY) | |
127 | void do_ldd_user(uint32_t addr) | |
128 | { | |
129 | T1 = ldl_user((void *) addr); | |
130 | T0 = ldl_user((void *) (addr + 4)); | |
131 | } | |
132 | void do_ldd_kernel(uint32_t addr) | |
133 | { | |
134 | T1 = ldl_kernel((void *) addr); | |
135 | T0 = ldl_kernel((void *) (addr + 4)); | |
136 | } | |
137 | #endif | |
138 | #endif | |
139 | ||
a0c4cb4a | 140 | void helper_rett() |
e8af50a3 FB |
141 | { |
142 | int cwp; | |
143 | env->psret = 1; | |
144 | cwp = (env->cwp + 1) & (NWINDOWS - 1); | |
145 | if (env->wim & (1 << cwp)) { | |
146 | raise_exception(TT_WIN_UNF); | |
147 | } | |
148 | set_cwp(cwp); | |
149 | env->psrs = env->psrps; | |
150 | } | |
151 | ||
8d5f07fa | 152 | void helper_ldfsr(void) |
e8af50a3 FB |
153 | { |
154 | switch (env->fsr & FSR_RD_MASK) { | |
155 | case FSR_RD_NEAREST: | |
156 | fesetround(FE_TONEAREST); | |
157 | break; | |
158 | case FSR_RD_ZERO: | |
159 | fesetround(FE_TOWARDZERO); | |
160 | break; | |
161 | case FSR_RD_POS: | |
162 | fesetround(FE_UPWARD); | |
163 | break; | |
164 | case FSR_RD_NEG: | |
165 | fesetround(FE_DOWNWARD); | |
166 | break; | |
167 | } | |
168 | } |