root / target-microblaze / op_helper.c @ cbcc6336
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1 | 4acb54ba | Edgar E. Iglesias | /*
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2 | 4acb54ba | Edgar E. Iglesias | * Microblaze helper routines.
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3 | 4acb54ba | Edgar E. Iglesias | *
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4 | 4acb54ba | Edgar E. Iglesias | * Copyright (c) 2009 Edgar E. Iglesias <edgar.iglesias@gmail.com>.
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5 | 4acb54ba | Edgar E. Iglesias | *
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6 | 4acb54ba | Edgar E. Iglesias | * This library is free software; you can redistribute it and/or
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7 | 4acb54ba | Edgar E. Iglesias | * modify it under the terms of the GNU Lesser General Public
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8 | 4acb54ba | Edgar E. Iglesias | * License as published by the Free Software Foundation; either
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9 | 4acb54ba | Edgar E. Iglesias | * version 2 of the License, or (at your option) any later version.
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10 | 4acb54ba | Edgar E. Iglesias | *
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11 | 4acb54ba | Edgar E. Iglesias | * This library is distributed in the hope that it will be useful,
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12 | 4acb54ba | Edgar E. Iglesias | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | 4acb54ba | Edgar E. Iglesias | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | 4acb54ba | Edgar E. Iglesias | * Lesser General Public License for more details.
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15 | 4acb54ba | Edgar E. Iglesias | *
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16 | 4acb54ba | Edgar E. Iglesias | * You should have received a copy of the GNU Lesser General Public
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17 | 8167ee88 | Blue Swirl | * License along with this library; if not, see <http://www.gnu.org/licenses/>.
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18 | 4acb54ba | Edgar E. Iglesias | */
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19 | 4acb54ba | Edgar E. Iglesias | |
20 | 4acb54ba | Edgar E. Iglesias | #include <assert.h> |
21 | 4acb54ba | Edgar E. Iglesias | #include "exec.h" |
22 | 4acb54ba | Edgar E. Iglesias | #include "helper.h" |
23 | 4acb54ba | Edgar E. Iglesias | #include "host-utils.h" |
24 | 4acb54ba | Edgar E. Iglesias | |
25 | 4acb54ba | Edgar E. Iglesias | #define D(x)
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26 | 4acb54ba | Edgar E. Iglesias | |
27 | 4acb54ba | Edgar E. Iglesias | #if !defined(CONFIG_USER_ONLY)
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28 | 4acb54ba | Edgar E. Iglesias | #define MMUSUFFIX _mmu
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29 | 4acb54ba | Edgar E. Iglesias | #define SHIFT 0 |
30 | 4acb54ba | Edgar E. Iglesias | #include "softmmu_template.h" |
31 | 4acb54ba | Edgar E. Iglesias | #define SHIFT 1 |
32 | 4acb54ba | Edgar E. Iglesias | #include "softmmu_template.h" |
33 | 4acb54ba | Edgar E. Iglesias | #define SHIFT 2 |
34 | 4acb54ba | Edgar E. Iglesias | #include "softmmu_template.h" |
35 | 4acb54ba | Edgar E. Iglesias | #define SHIFT 3 |
36 | 4acb54ba | Edgar E. Iglesias | #include "softmmu_template.h" |
37 | 4acb54ba | Edgar E. Iglesias | |
38 | 4acb54ba | Edgar E. Iglesias | /* Try to fill the TLB and return an exception if error. If retaddr is
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39 | 4acb54ba | Edgar E. Iglesias | NULL, it means that the function was called in C code (i.e. not
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40 | 4acb54ba | Edgar E. Iglesias | from generated code or from helper.c) */
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41 | 4acb54ba | Edgar E. Iglesias | /* XXX: fix it to restore all registers */
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42 | 4acb54ba | Edgar E. Iglesias | void tlb_fill (target_ulong addr, int is_write, int mmu_idx, void *retaddr) |
43 | 4acb54ba | Edgar E. Iglesias | { |
44 | 4acb54ba | Edgar E. Iglesias | TranslationBlock *tb; |
45 | 4acb54ba | Edgar E. Iglesias | CPUState *saved_env; |
46 | 4acb54ba | Edgar E. Iglesias | unsigned long pc; |
47 | 4acb54ba | Edgar E. Iglesias | int ret;
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48 | 4acb54ba | Edgar E. Iglesias | |
49 | 4acb54ba | Edgar E. Iglesias | /* XXX: hack to restore env in all cases, even if not called from
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50 | 4acb54ba | Edgar E. Iglesias | generated code */
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51 | 4acb54ba | Edgar E. Iglesias | saved_env = env; |
52 | 4acb54ba | Edgar E. Iglesias | env = cpu_single_env; |
53 | 4acb54ba | Edgar E. Iglesias | |
54 | 4acb54ba | Edgar E. Iglesias | ret = cpu_mb_handle_mmu_fault(env, addr, is_write, mmu_idx, 1);
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55 | 4acb54ba | Edgar E. Iglesias | if (unlikely(ret)) {
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56 | 4acb54ba | Edgar E. Iglesias | if (retaddr) {
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57 | 4acb54ba | Edgar E. Iglesias | /* now we have a real cpu fault */
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58 | 4acb54ba | Edgar E. Iglesias | pc = (unsigned long)retaddr; |
59 | 4acb54ba | Edgar E. Iglesias | tb = tb_find_pc(pc); |
60 | 4acb54ba | Edgar E. Iglesias | if (tb) {
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61 | 4acb54ba | Edgar E. Iglesias | /* the PC is inside the translated code. It means that we have
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62 | 4acb54ba | Edgar E. Iglesias | a virtual CPU fault */
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63 | 4acb54ba | Edgar E. Iglesias | cpu_restore_state(tb, env, pc, NULL);
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64 | 4acb54ba | Edgar E. Iglesias | } |
65 | 4acb54ba | Edgar E. Iglesias | } |
66 | 4acb54ba | Edgar E. Iglesias | cpu_loop_exit(); |
67 | 4acb54ba | Edgar E. Iglesias | } |
68 | 4acb54ba | Edgar E. Iglesias | env = saved_env; |
69 | 4acb54ba | Edgar E. Iglesias | } |
70 | 4acb54ba | Edgar E. Iglesias | #endif
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71 | 4acb54ba | Edgar E. Iglesias | |
72 | 4acb54ba | Edgar E. Iglesias | void helper_raise_exception(uint32_t index)
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73 | 4acb54ba | Edgar E. Iglesias | { |
74 | 4acb54ba | Edgar E. Iglesias | env->exception_index = index; |
75 | 4acb54ba | Edgar E. Iglesias | cpu_loop_exit(); |
76 | 4acb54ba | Edgar E. Iglesias | } |
77 | 4acb54ba | Edgar E. Iglesias | |
78 | 4acb54ba | Edgar E. Iglesias | void helper_debug(void) |
79 | 4acb54ba | Edgar E. Iglesias | { |
80 | 4acb54ba | Edgar E. Iglesias | int i;
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81 | 4acb54ba | Edgar E. Iglesias | |
82 | 4acb54ba | Edgar E. Iglesias | qemu_log("PC=%8.8x\n", env->sregs[SR_PC]);
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83 | 4c24aa0a | Michal Simek | qemu_log("rmsr=%x resr=%x rear=%x debug[%x] imm=%x iflags=%x\n",
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84 | 4c24aa0a | Michal Simek | env->sregs[SR_MSR], env->sregs[SR_ESR], env->sregs[SR_EAR], |
85 | 17c52a43 | Edgar E. Iglesias | env->debug, env->imm, env->iflags); |
86 | 17c52a43 | Edgar E. Iglesias | qemu_log("btaken=%d btarget=%x mode=%s(saved=%s) eip=%d ie=%d\n",
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87 | 17c52a43 | Edgar E. Iglesias | env->btaken, env->btarget, |
88 | 17c52a43 | Edgar E. Iglesias | (env->sregs[SR_MSR] & MSR_UM) ? "user" : "kernel", |
89 | 17c52a43 | Edgar E. Iglesias | (env->sregs[SR_MSR] & MSR_UMS) ? "user" : "kernel", |
90 | 17c52a43 | Edgar E. Iglesias | (env->sregs[SR_MSR] & MSR_EIP), |
91 | 17c52a43 | Edgar E. Iglesias | (env->sregs[SR_MSR] & MSR_IE)); |
92 | 4acb54ba | Edgar E. Iglesias | for (i = 0; i < 32; i++) { |
93 | 4acb54ba | Edgar E. Iglesias | qemu_log("r%2.2d=%8.8x ", i, env->regs[i]);
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94 | 4acb54ba | Edgar E. Iglesias | if ((i + 1) % 4 == 0) |
95 | 4acb54ba | Edgar E. Iglesias | qemu_log("\n");
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96 | 4acb54ba | Edgar E. Iglesias | } |
97 | 4acb54ba | Edgar E. Iglesias | qemu_log("\n\n");
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98 | 4acb54ba | Edgar E. Iglesias | } |
99 | 4acb54ba | Edgar E. Iglesias | |
100 | 4acb54ba | Edgar E. Iglesias | static inline uint32_t compute_carry(uint32_t a, uint32_t b, uint32_t cin) |
101 | 4acb54ba | Edgar E. Iglesias | { |
102 | 4acb54ba | Edgar E. Iglesias | uint32_t cout = 0;
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103 | 4acb54ba | Edgar E. Iglesias | |
104 | 4acb54ba | Edgar E. Iglesias | if ((b == ~0) && cin) |
105 | 4acb54ba | Edgar E. Iglesias | cout = 1;
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106 | 4acb54ba | Edgar E. Iglesias | else if ((~0 - a) < (b + cin)) |
107 | 4acb54ba | Edgar E. Iglesias | cout = 1;
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108 | 4acb54ba | Edgar E. Iglesias | return cout;
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109 | 4acb54ba | Edgar E. Iglesias | } |
110 | 4acb54ba | Edgar E. Iglesias | |
111 | 4acb54ba | Edgar E. Iglesias | uint32_t helper_cmp(uint32_t a, uint32_t b) |
112 | 4acb54ba | Edgar E. Iglesias | { |
113 | 4acb54ba | Edgar E. Iglesias | uint32_t t; |
114 | 4acb54ba | Edgar E. Iglesias | |
115 | 4acb54ba | Edgar E. Iglesias | t = b + ~a + 1;
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116 | 4acb54ba | Edgar E. Iglesias | if ((b & 0x80000000) ^ (a & 0x80000000)) |
117 | 4acb54ba | Edgar E. Iglesias | t = (t & 0x7fffffff) | (b & 0x80000000); |
118 | 4acb54ba | Edgar E. Iglesias | return t;
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119 | 4acb54ba | Edgar E. Iglesias | } |
120 | 4acb54ba | Edgar E. Iglesias | |
121 | 4acb54ba | Edgar E. Iglesias | uint32_t helper_cmpu(uint32_t a, uint32_t b) |
122 | 4acb54ba | Edgar E. Iglesias | { |
123 | 4acb54ba | Edgar E. Iglesias | uint32_t t; |
124 | 4acb54ba | Edgar E. Iglesias | |
125 | 4acb54ba | Edgar E. Iglesias | t = b + ~a + 1;
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126 | 4acb54ba | Edgar E. Iglesias | if ((b & 0x80000000) ^ (a & 0x80000000)) |
127 | 4acb54ba | Edgar E. Iglesias | t = (t & 0x7fffffff) | (a & 0x80000000); |
128 | 4acb54ba | Edgar E. Iglesias | return t;
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129 | 4acb54ba | Edgar E. Iglesias | } |
130 | 4acb54ba | Edgar E. Iglesias | |
131 | 5d0bb823 | Edgar E. Iglesias | uint32_t helper_carry(uint32_t a, uint32_t b, uint32_t cf) |
132 | 4acb54ba | Edgar E. Iglesias | { |
133 | 5d0bb823 | Edgar E. Iglesias | uint32_t ncf; |
134 | 40cbf5b7 | Edgar E. Iglesias | ncf = compute_carry(a, b, cf); |
135 | 40cbf5b7 | Edgar E. Iglesias | return ncf;
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136 | 4acb54ba | Edgar E. Iglesias | } |
137 | 4acb54ba | Edgar E. Iglesias | |
138 | 4acb54ba | Edgar E. Iglesias | static inline int div_prepare(uint32_t a, uint32_t b) |
139 | 4acb54ba | Edgar E. Iglesias | { |
140 | 4acb54ba | Edgar E. Iglesias | if (b == 0) { |
141 | 4acb54ba | Edgar E. Iglesias | env->sregs[SR_MSR] |= MSR_DZ; |
142 | 821ebb33 | Edgar E. Iglesias | |
143 | 821ebb33 | Edgar E. Iglesias | if ((env->sregs[SR_MSR] & MSR_EE)
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144 | 821ebb33 | Edgar E. Iglesias | && !(env->pvr.regs[2] & PVR2_DIV_ZERO_EXC_MASK)) {
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145 | 821ebb33 | Edgar E. Iglesias | env->sregs[SR_ESR] = ESR_EC_DIVZERO; |
146 | 821ebb33 | Edgar E. Iglesias | helper_raise_exception(EXCP_HW_EXCP); |
147 | 821ebb33 | Edgar E. Iglesias | } |
148 | 4acb54ba | Edgar E. Iglesias | return 0; |
149 | 4acb54ba | Edgar E. Iglesias | } |
150 | 4acb54ba | Edgar E. Iglesias | env->sregs[SR_MSR] &= ~MSR_DZ; |
151 | 4acb54ba | Edgar E. Iglesias | return 1; |
152 | 4acb54ba | Edgar E. Iglesias | } |
153 | 4acb54ba | Edgar E. Iglesias | |
154 | 4acb54ba | Edgar E. Iglesias | uint32_t helper_divs(uint32_t a, uint32_t b) |
155 | 4acb54ba | Edgar E. Iglesias | { |
156 | 4acb54ba | Edgar E. Iglesias | if (!div_prepare(a, b))
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157 | 4acb54ba | Edgar E. Iglesias | return 0; |
158 | 4acb54ba | Edgar E. Iglesias | return (int32_t)a / (int32_t)b;
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159 | 4acb54ba | Edgar E. Iglesias | } |
160 | 4acb54ba | Edgar E. Iglesias | |
161 | 4acb54ba | Edgar E. Iglesias | uint32_t helper_divu(uint32_t a, uint32_t b) |
162 | 4acb54ba | Edgar E. Iglesias | { |
163 | 4acb54ba | Edgar E. Iglesias | if (!div_prepare(a, b))
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164 | 4acb54ba | Edgar E. Iglesias | return 0; |
165 | 4acb54ba | Edgar E. Iglesias | return a / b;
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166 | 4acb54ba | Edgar E. Iglesias | } |
167 | 4acb54ba | Edgar E. Iglesias | |
168 | 97694c57 | Edgar E. Iglesias | /* raise FPU exception. */
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169 | 97694c57 | Edgar E. Iglesias | static void raise_fpu_exception(void) |
170 | 97694c57 | Edgar E. Iglesias | { |
171 | 97694c57 | Edgar E. Iglesias | env->sregs[SR_ESR] = ESR_EC_FPU; |
172 | 97694c57 | Edgar E. Iglesias | helper_raise_exception(EXCP_HW_EXCP); |
173 | 97694c57 | Edgar E. Iglesias | } |
174 | 97694c57 | Edgar E. Iglesias | |
175 | 97694c57 | Edgar E. Iglesias | static void update_fpu_flags(int flags) |
176 | 97694c57 | Edgar E. Iglesias | { |
177 | 97694c57 | Edgar E. Iglesias | int raise = 0; |
178 | 97694c57 | Edgar E. Iglesias | |
179 | 97694c57 | Edgar E. Iglesias | if (flags & float_flag_invalid) {
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180 | 97694c57 | Edgar E. Iglesias | env->sregs[SR_FSR] |= FSR_IO; |
181 | 97694c57 | Edgar E. Iglesias | raise = 1;
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182 | 97694c57 | Edgar E. Iglesias | } |
183 | 97694c57 | Edgar E. Iglesias | if (flags & float_flag_divbyzero) {
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184 | 97694c57 | Edgar E. Iglesias | env->sregs[SR_FSR] |= FSR_DZ; |
185 | 97694c57 | Edgar E. Iglesias | raise = 1;
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186 | 97694c57 | Edgar E. Iglesias | } |
187 | 97694c57 | Edgar E. Iglesias | if (flags & float_flag_overflow) {
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188 | 97694c57 | Edgar E. Iglesias | env->sregs[SR_FSR] |= FSR_OF; |
189 | 97694c57 | Edgar E. Iglesias | raise = 1;
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190 | 97694c57 | Edgar E. Iglesias | } |
191 | 97694c57 | Edgar E. Iglesias | if (flags & float_flag_underflow) {
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192 | 97694c57 | Edgar E. Iglesias | env->sregs[SR_FSR] |= FSR_UF; |
193 | 97694c57 | Edgar E. Iglesias | raise = 1;
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194 | 97694c57 | Edgar E. Iglesias | } |
195 | 97694c57 | Edgar E. Iglesias | if (raise
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196 | 97694c57 | Edgar E. Iglesias | && (env->pvr.regs[2] & PVR2_FPU_EXC_MASK)
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197 | 97694c57 | Edgar E. Iglesias | && (env->sregs[SR_MSR] & MSR_EE)) { |
198 | 97694c57 | Edgar E. Iglesias | raise_fpu_exception(); |
199 | 97694c57 | Edgar E. Iglesias | } |
200 | 97694c57 | Edgar E. Iglesias | } |
201 | 97694c57 | Edgar E. Iglesias | |
202 | 97694c57 | Edgar E. Iglesias | uint32_t helper_fadd(uint32_t a, uint32_t b) |
203 | 97694c57 | Edgar E. Iglesias | { |
204 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fd, fa, fb; |
205 | 97694c57 | Edgar E. Iglesias | int flags;
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206 | 97694c57 | Edgar E. Iglesias | |
207 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
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208 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
209 | 97694c57 | Edgar E. Iglesias | fb.l = b; |
210 | 97694c57 | Edgar E. Iglesias | fd.f = float32_add(fa.f, fb.f, &env->fp_status); |
211 | 97694c57 | Edgar E. Iglesias | |
212 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
213 | 97694c57 | Edgar E. Iglesias | update_fpu_flags(flags); |
214 | 97694c57 | Edgar E. Iglesias | return fd.l;
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215 | 97694c57 | Edgar E. Iglesias | } |
216 | 97694c57 | Edgar E. Iglesias | |
217 | 97694c57 | Edgar E. Iglesias | uint32_t helper_frsub(uint32_t a, uint32_t b) |
218 | 97694c57 | Edgar E. Iglesias | { |
219 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fd, fa, fb; |
220 | 97694c57 | Edgar E. Iglesias | int flags;
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221 | 97694c57 | Edgar E. Iglesias | |
222 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
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223 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
224 | 97694c57 | Edgar E. Iglesias | fb.l = b; |
225 | 97694c57 | Edgar E. Iglesias | fd.f = float32_sub(fb.f, fa.f, &env->fp_status); |
226 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
227 | 97694c57 | Edgar E. Iglesias | update_fpu_flags(flags); |
228 | 97694c57 | Edgar E. Iglesias | return fd.l;
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229 | 97694c57 | Edgar E. Iglesias | } |
230 | 97694c57 | Edgar E. Iglesias | |
231 | 97694c57 | Edgar E. Iglesias | uint32_t helper_fmul(uint32_t a, uint32_t b) |
232 | 97694c57 | Edgar E. Iglesias | { |
233 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fd, fa, fb; |
234 | 97694c57 | Edgar E. Iglesias | int flags;
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235 | 97694c57 | Edgar E. Iglesias | |
236 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
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237 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
238 | 97694c57 | Edgar E. Iglesias | fb.l = b; |
239 | 97694c57 | Edgar E. Iglesias | fd.f = float32_mul(fa.f, fb.f, &env->fp_status); |
240 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
241 | 97694c57 | Edgar E. Iglesias | update_fpu_flags(flags); |
242 | 97694c57 | Edgar E. Iglesias | |
243 | 97694c57 | Edgar E. Iglesias | return fd.l;
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244 | 97694c57 | Edgar E. Iglesias | } |
245 | 97694c57 | Edgar E. Iglesias | |
246 | 97694c57 | Edgar E. Iglesias | uint32_t helper_fdiv(uint32_t a, uint32_t b) |
247 | 97694c57 | Edgar E. Iglesias | { |
248 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fd, fa, fb; |
249 | 97694c57 | Edgar E. Iglesias | int flags;
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250 | 97694c57 | Edgar E. Iglesias | |
251 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
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252 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
253 | 97694c57 | Edgar E. Iglesias | fb.l = b; |
254 | 97694c57 | Edgar E. Iglesias | fd.f = float32_div(fb.f, fa.f, &env->fp_status); |
255 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
256 | 97694c57 | Edgar E. Iglesias | update_fpu_flags(flags); |
257 | 97694c57 | Edgar E. Iglesias | |
258 | 97694c57 | Edgar E. Iglesias | return fd.l;
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259 | 97694c57 | Edgar E. Iglesias | } |
260 | 97694c57 | Edgar E. Iglesias | |
261 | 97694c57 | Edgar E. Iglesias | uint32_t helper_fcmp_un(uint32_t a, uint32_t b) |
262 | 97694c57 | Edgar E. Iglesias | { |
263 | ef9d48da | Edgar E. Iglesias | CPU_FloatU fa, fb; |
264 | ef9d48da | Edgar E. Iglesias | uint32_t r = 0;
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265 | ef9d48da | Edgar E. Iglesias | |
266 | ef9d48da | Edgar E. Iglesias | fa.l = a; |
267 | ef9d48da | Edgar E. Iglesias | fb.l = b; |
268 | ef9d48da | Edgar E. Iglesias | |
269 | ef9d48da | Edgar E. Iglesias | if (float32_is_signaling_nan(fa.f) || float32_is_signaling_nan(fb.f)) {
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270 | ef9d48da | Edgar E. Iglesias | update_fpu_flags(float_flag_invalid); |
271 | ef9d48da | Edgar E. Iglesias | r = 1;
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272 | ef9d48da | Edgar E. Iglesias | } |
273 | ef9d48da | Edgar E. Iglesias | |
274 | 18569871 | Peter Maydell | if (float32_is_quiet_nan(fa.f) || float32_is_quiet_nan(fb.f)) {
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275 | ef9d48da | Edgar E. Iglesias | r = 1;
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276 | ef9d48da | Edgar E. Iglesias | } |
277 | ef9d48da | Edgar E. Iglesias | |
278 | ef9d48da | Edgar E. Iglesias | return r;
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279 | 97694c57 | Edgar E. Iglesias | } |
280 | 97694c57 | Edgar E. Iglesias | |
281 | 97694c57 | Edgar E. Iglesias | uint32_t helper_fcmp_lt(uint32_t a, uint32_t b) |
282 | 97694c57 | Edgar E. Iglesias | { |
283 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fa, fb; |
284 | 97694c57 | Edgar E. Iglesias | int r;
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285 | 97694c57 | Edgar E. Iglesias | int flags;
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286 | 97694c57 | Edgar E. Iglesias | |
287 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
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288 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
289 | 97694c57 | Edgar E. Iglesias | fb.l = b; |
290 | 97694c57 | Edgar E. Iglesias | r = float32_lt(fb.f, fa.f, &env->fp_status); |
291 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
292 | 97694c57 | Edgar E. Iglesias | update_fpu_flags(flags & float_flag_invalid); |
293 | 97694c57 | Edgar E. Iglesias | |
294 | 97694c57 | Edgar E. Iglesias | return r;
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295 | 97694c57 | Edgar E. Iglesias | } |
296 | 97694c57 | Edgar E. Iglesias | |
297 | 97694c57 | Edgar E. Iglesias | uint32_t helper_fcmp_eq(uint32_t a, uint32_t b) |
298 | 97694c57 | Edgar E. Iglesias | { |
299 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fa, fb; |
300 | 97694c57 | Edgar E. Iglesias | int flags;
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301 | 97694c57 | Edgar E. Iglesias | int r;
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302 | 97694c57 | Edgar E. Iglesias | |
303 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
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304 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
305 | 97694c57 | Edgar E. Iglesias | fb.l = b; |
306 | 97694c57 | Edgar E. Iglesias | r = float32_eq(fa.f, fb.f, &env->fp_status); |
307 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
308 | 97694c57 | Edgar E. Iglesias | update_fpu_flags(flags & float_flag_invalid); |
309 | 97694c57 | Edgar E. Iglesias | |
310 | 97694c57 | Edgar E. Iglesias | return r;
|
311 | 97694c57 | Edgar E. Iglesias | } |
312 | 97694c57 | Edgar E. Iglesias | |
313 | 97694c57 | Edgar E. Iglesias | uint32_t helper_fcmp_le(uint32_t a, uint32_t b) |
314 | 97694c57 | Edgar E. Iglesias | { |
315 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fa, fb; |
316 | 97694c57 | Edgar E. Iglesias | int flags;
|
317 | 97694c57 | Edgar E. Iglesias | int r;
|
318 | 97694c57 | Edgar E. Iglesias | |
319 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
320 | 97694c57 | Edgar E. Iglesias | fb.l = b; |
321 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
|
322 | 97694c57 | Edgar E. Iglesias | r = float32_le(fa.f, fb.f, &env->fp_status); |
323 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
324 | 97694c57 | Edgar E. Iglesias | update_fpu_flags(flags & float_flag_invalid); |
325 | 97694c57 | Edgar E. Iglesias | |
326 | 97694c57 | Edgar E. Iglesias | |
327 | 97694c57 | Edgar E. Iglesias | return r;
|
328 | 97694c57 | Edgar E. Iglesias | } |
329 | 97694c57 | Edgar E. Iglesias | |
330 | 97694c57 | Edgar E. Iglesias | uint32_t helper_fcmp_gt(uint32_t a, uint32_t b) |
331 | 97694c57 | Edgar E. Iglesias | { |
332 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fa, fb; |
333 | 97694c57 | Edgar E. Iglesias | int flags, r;
|
334 | 97694c57 | Edgar E. Iglesias | |
335 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
336 | 97694c57 | Edgar E. Iglesias | fb.l = b; |
337 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
|
338 | 97694c57 | Edgar E. Iglesias | r = float32_lt(fa.f, fb.f, &env->fp_status); |
339 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
340 | 97694c57 | Edgar E. Iglesias | update_fpu_flags(flags & float_flag_invalid); |
341 | 97694c57 | Edgar E. Iglesias | return r;
|
342 | 97694c57 | Edgar E. Iglesias | } |
343 | 97694c57 | Edgar E. Iglesias | |
344 | 97694c57 | Edgar E. Iglesias | uint32_t helper_fcmp_ne(uint32_t a, uint32_t b) |
345 | 97694c57 | Edgar E. Iglesias | { |
346 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fa, fb; |
347 | 97694c57 | Edgar E. Iglesias | int flags, r;
|
348 | 97694c57 | Edgar E. Iglesias | |
349 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
350 | 97694c57 | Edgar E. Iglesias | fb.l = b; |
351 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
|
352 | 97694c57 | Edgar E. Iglesias | r = !float32_eq(fa.f, fb.f, &env->fp_status); |
353 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
354 | 97694c57 | Edgar E. Iglesias | update_fpu_flags(flags & float_flag_invalid); |
355 | 97694c57 | Edgar E. Iglesias | |
356 | 97694c57 | Edgar E. Iglesias | return r;
|
357 | 97694c57 | Edgar E. Iglesias | } |
358 | 97694c57 | Edgar E. Iglesias | |
359 | 97694c57 | Edgar E. Iglesias | uint32_t helper_fcmp_ge(uint32_t a, uint32_t b) |
360 | 97694c57 | Edgar E. Iglesias | { |
361 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fa, fb; |
362 | 97694c57 | Edgar E. Iglesias | int flags, r;
|
363 | 97694c57 | Edgar E. Iglesias | |
364 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
365 | 97694c57 | Edgar E. Iglesias | fb.l = b; |
366 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
|
367 | 97694c57 | Edgar E. Iglesias | r = !float32_lt(fa.f, fb.f, &env->fp_status); |
368 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
369 | 97694c57 | Edgar E. Iglesias | update_fpu_flags(flags & float_flag_invalid); |
370 | 97694c57 | Edgar E. Iglesias | |
371 | 97694c57 | Edgar E. Iglesias | return r;
|
372 | 97694c57 | Edgar E. Iglesias | } |
373 | 97694c57 | Edgar E. Iglesias | |
374 | 97694c57 | Edgar E. Iglesias | uint32_t helper_flt(uint32_t a) |
375 | 97694c57 | Edgar E. Iglesias | { |
376 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fd, fa; |
377 | 97694c57 | Edgar E. Iglesias | |
378 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
379 | 97694c57 | Edgar E. Iglesias | fd.f = int32_to_float32(fa.l, &env->fp_status); |
380 | 97694c57 | Edgar E. Iglesias | return fd.l;
|
381 | 97694c57 | Edgar E. Iglesias | } |
382 | 97694c57 | Edgar E. Iglesias | |
383 | 97694c57 | Edgar E. Iglesias | uint32_t helper_fint(uint32_t a) |
384 | 97694c57 | Edgar E. Iglesias | { |
385 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fa; |
386 | 97694c57 | Edgar E. Iglesias | uint32_t r; |
387 | 97694c57 | Edgar E. Iglesias | int flags;
|
388 | 97694c57 | Edgar E. Iglesias | |
389 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
|
390 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
391 | 97694c57 | Edgar E. Iglesias | r = float32_to_int32(fa.f, &env->fp_status); |
392 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
393 | 97694c57 | Edgar E. Iglesias | update_fpu_flags(flags); |
394 | 97694c57 | Edgar E. Iglesias | |
395 | 97694c57 | Edgar E. Iglesias | return r;
|
396 | 97694c57 | Edgar E. Iglesias | } |
397 | 97694c57 | Edgar E. Iglesias | |
398 | 97694c57 | Edgar E. Iglesias | uint32_t helper_fsqrt(uint32_t a) |
399 | 97694c57 | Edgar E. Iglesias | { |
400 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fd, fa; |
401 | 97694c57 | Edgar E. Iglesias | int flags;
|
402 | 97694c57 | Edgar E. Iglesias | |
403 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
|
404 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
405 | 97694c57 | Edgar E. Iglesias | fd.l = float32_sqrt(fa.f, &env->fp_status); |
406 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
407 | 97694c57 | Edgar E. Iglesias | update_fpu_flags(flags); |
408 | 97694c57 | Edgar E. Iglesias | |
409 | 97694c57 | Edgar E. Iglesias | return fd.l;
|
410 | 97694c57 | Edgar E. Iglesias | } |
411 | 97694c57 | Edgar E. Iglesias | |
412 | 4acb54ba | Edgar E. Iglesias | uint32_t helper_pcmpbf(uint32_t a, uint32_t b) |
413 | 4acb54ba | Edgar E. Iglesias | { |
414 | 4acb54ba | Edgar E. Iglesias | unsigned int i; |
415 | 4acb54ba | Edgar E. Iglesias | uint32_t mask = 0xff000000;
|
416 | 4acb54ba | Edgar E. Iglesias | |
417 | 4acb54ba | Edgar E. Iglesias | for (i = 0; i < 4; i++) { |
418 | 4acb54ba | Edgar E. Iglesias | if ((a & mask) == (b & mask))
|
419 | 4acb54ba | Edgar E. Iglesias | return i + 1; |
420 | 4acb54ba | Edgar E. Iglesias | mask >>= 8;
|
421 | 4acb54ba | Edgar E. Iglesias | } |
422 | 4acb54ba | Edgar E. Iglesias | return 0; |
423 | 4acb54ba | Edgar E. Iglesias | } |
424 | 4acb54ba | Edgar E. Iglesias | |
425 | 3aa80988 | Edgar E. Iglesias | void helper_memalign(uint32_t addr, uint32_t dr, uint32_t wr, uint32_t mask)
|
426 | 968a40f6 | Edgar E. Iglesias | { |
427 | 968a40f6 | Edgar E. Iglesias | if (addr & mask) {
|
428 | 97f90cbf | Edgar E. Iglesias | qemu_log_mask(CPU_LOG_INT, |
429 | 97f90cbf | Edgar E. Iglesias | "unaligned access addr=%x mask=%x, wr=%d dr=r%d\n",
|
430 | 97f90cbf | Edgar E. Iglesias | addr, mask, wr, dr); |
431 | 97f90cbf | Edgar E. Iglesias | env->sregs[SR_EAR] = addr; |
432 | 968a40f6 | Edgar E. Iglesias | env->sregs[SR_ESR] = ESR_EC_UNALIGNED_DATA | (wr << 10) \
|
433 | 968a40f6 | Edgar E. Iglesias | | (dr & 31) << 5; |
434 | 3aa80988 | Edgar E. Iglesias | if (mask == 3) { |
435 | 968a40f6 | Edgar E. Iglesias | env->sregs[SR_ESR] |= 1 << 11; |
436 | 968a40f6 | Edgar E. Iglesias | } |
437 | 97f90cbf | Edgar E. Iglesias | if (!(env->sregs[SR_MSR] & MSR_EE)) {
|
438 | 97f90cbf | Edgar E. Iglesias | return;
|
439 | 97f90cbf | Edgar E. Iglesias | } |
440 | 968a40f6 | Edgar E. Iglesias | helper_raise_exception(EXCP_HW_EXCP); |
441 | 968a40f6 | Edgar E. Iglesias | } |
442 | 968a40f6 | Edgar E. Iglesias | } |
443 | 968a40f6 | Edgar E. Iglesias | |
444 | 4acb54ba | Edgar E. Iglesias | #if !defined(CONFIG_USER_ONLY)
|
445 | 4acb54ba | Edgar E. Iglesias | /* Writes/reads to the MMU's special regs end up here. */
|
446 | 4acb54ba | Edgar E. Iglesias | uint32_t helper_mmu_read(uint32_t rn) |
447 | 4acb54ba | Edgar E. Iglesias | { |
448 | 4acb54ba | Edgar E. Iglesias | return mmu_read(env, rn);
|
449 | 4acb54ba | Edgar E. Iglesias | } |
450 | 4acb54ba | Edgar E. Iglesias | |
451 | 4acb54ba | Edgar E. Iglesias | void helper_mmu_write(uint32_t rn, uint32_t v)
|
452 | 4acb54ba | Edgar E. Iglesias | { |
453 | 4acb54ba | Edgar E. Iglesias | mmu_write(env, rn, v); |
454 | 4acb54ba | Edgar E. Iglesias | } |
455 | faed1c2a | Edgar E. Iglesias | |
456 | c227f099 | Anthony Liguori | void do_unassigned_access(target_phys_addr_t addr, int is_write, int is_exec, |
457 | faed1c2a | Edgar E. Iglesias | int is_asi, int size) |
458 | faed1c2a | Edgar E. Iglesias | { |
459 | faed1c2a | Edgar E. Iglesias | CPUState *saved_env; |
460 | e1aa3254 | Edgar E. Iglesias | |
461 | e1aa3254 | Edgar E. Iglesias | if (!cpu_single_env) {
|
462 | e1aa3254 | Edgar E. Iglesias | /* XXX: ??? */
|
463 | e1aa3254 | Edgar E. Iglesias | return;
|
464 | e1aa3254 | Edgar E. Iglesias | } |
465 | e1aa3254 | Edgar E. Iglesias | |
466 | faed1c2a | Edgar E. Iglesias | /* XXX: hack to restore env in all cases, even if not called from
|
467 | faed1c2a | Edgar E. Iglesias | generated code */
|
468 | faed1c2a | Edgar E. Iglesias | saved_env = env; |
469 | faed1c2a | Edgar E. Iglesias | env = cpu_single_env; |
470 | 97f90cbf | Edgar E. Iglesias | qemu_log_mask(CPU_LOG_INT, "Unassigned " TARGET_FMT_plx " wr=%d exe=%d\n", |
471 | faed1c2a | Edgar E. Iglesias | addr, is_write, is_exec); |
472 | faed1c2a | Edgar E. Iglesias | if (!(env->sregs[SR_MSR] & MSR_EE)) {
|
473 | 95b279de | Edgar E. Iglesias | env = saved_env; |
474 | faed1c2a | Edgar E. Iglesias | return;
|
475 | faed1c2a | Edgar E. Iglesias | } |
476 | faed1c2a | Edgar E. Iglesias | |
477 | 97f90cbf | Edgar E. Iglesias | env->sregs[SR_EAR] = addr; |
478 | faed1c2a | Edgar E. Iglesias | if (is_exec) {
|
479 | 97f90cbf | Edgar E. Iglesias | if ((env->pvr.regs[2] & PVR2_IOPB_BUS_EXC_MASK)) { |
480 | faed1c2a | Edgar E. Iglesias | env->sregs[SR_ESR] = ESR_EC_INSN_BUS; |
481 | faed1c2a | Edgar E. Iglesias | helper_raise_exception(EXCP_HW_EXCP); |
482 | faed1c2a | Edgar E. Iglesias | } |
483 | faed1c2a | Edgar E. Iglesias | } else {
|
484 | 97f90cbf | Edgar E. Iglesias | if ((env->pvr.regs[2] & PVR2_DOPB_BUS_EXC_MASK)) { |
485 | faed1c2a | Edgar E. Iglesias | env->sregs[SR_ESR] = ESR_EC_DATA_BUS; |
486 | faed1c2a | Edgar E. Iglesias | helper_raise_exception(EXCP_HW_EXCP); |
487 | faed1c2a | Edgar E. Iglesias | } |
488 | faed1c2a | Edgar E. Iglesias | } |
489 | 95b279de | Edgar E. Iglesias | env = saved_env; |
490 | faed1c2a | Edgar E. Iglesias | } |
491 | 3c7b48b7 | Paul Brook | #endif |