root / target-microblaze / op_helper.c @ c08ba66f
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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 | dadc1064 | Peter A. G. Crosthwaite | * Copyright (c) 2009-2012 PetaLogix Qld Pty Ltd.
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6 | 4acb54ba | Edgar E. Iglesias | *
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7 | 4acb54ba | Edgar E. Iglesias | * This library is free software; you can redistribute it and/or
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8 | 4acb54ba | Edgar E. Iglesias | * modify it under the terms of the GNU Lesser General Public
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9 | 4acb54ba | Edgar E. Iglesias | * License as published by the Free Software Foundation; either
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10 | 4acb54ba | Edgar E. Iglesias | * version 2 of the License, or (at your option) any later version.
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11 | 4acb54ba | Edgar E. Iglesias | *
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12 | 4acb54ba | Edgar E. Iglesias | * This library is distributed in the hope that it will be useful,
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13 | 4acb54ba | Edgar E. Iglesias | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | 4acb54ba | Edgar E. Iglesias | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 | 4acb54ba | Edgar E. Iglesias | * Lesser General Public License for more details.
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16 | 4acb54ba | Edgar E. Iglesias | *
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17 | 4acb54ba | Edgar E. Iglesias | * You should have received a copy of the GNU Lesser General Public
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18 | 8167ee88 | Blue Swirl | * License along with this library; if not, see <http://www.gnu.org/licenses/>.
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19 | 4acb54ba | Edgar E. Iglesias | */
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20 | 4acb54ba | Edgar E. Iglesias | |
21 | 4acb54ba | Edgar E. Iglesias | #include <assert.h> |
22 | 3e457172 | Blue Swirl | #include "cpu.h" |
23 | 4acb54ba | Edgar E. Iglesias | #include "helper.h" |
24 | 4acb54ba | Edgar E. Iglesias | #include "host-utils.h" |
25 | 4acb54ba | Edgar E. Iglesias | |
26 | 4acb54ba | Edgar E. Iglesias | #define D(x)
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27 | 4acb54ba | Edgar E. Iglesias | |
28 | 4acb54ba | Edgar E. Iglesias | #if !defined(CONFIG_USER_ONLY)
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29 | 3e457172 | Blue Swirl | #include "softmmu_exec.h" |
30 | 3e457172 | Blue Swirl | |
31 | 4acb54ba | Edgar E. Iglesias | #define MMUSUFFIX _mmu
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32 | 4acb54ba | Edgar E. Iglesias | #define SHIFT 0 |
33 | 4acb54ba | Edgar E. Iglesias | #include "softmmu_template.h" |
34 | 4acb54ba | Edgar E. Iglesias | #define SHIFT 1 |
35 | 4acb54ba | Edgar E. Iglesias | #include "softmmu_template.h" |
36 | 4acb54ba | Edgar E. Iglesias | #define SHIFT 2 |
37 | 4acb54ba | Edgar E. Iglesias | #include "softmmu_template.h" |
38 | 4acb54ba | Edgar E. Iglesias | #define SHIFT 3 |
39 | 4acb54ba | Edgar E. Iglesias | #include "softmmu_template.h" |
40 | 4acb54ba | Edgar E. Iglesias | |
41 | 4acb54ba | Edgar E. Iglesias | /* Try to fill the TLB and return an exception if error. If retaddr is
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42 | 4acb54ba | Edgar E. Iglesias | NULL, it means that the function was called in C code (i.e. not
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43 | 4acb54ba | Edgar E. Iglesias | from generated code or from helper.c) */
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44 | 64254eba | Blue Swirl | void tlb_fill(CPUMBState *env, target_ulong addr, int is_write, int mmu_idx, |
45 | 20503968 | Blue Swirl | uintptr_t retaddr) |
46 | 4acb54ba | Edgar E. Iglesias | { |
47 | 4acb54ba | Edgar E. Iglesias | TranslationBlock *tb; |
48 | 4acb54ba | Edgar E. Iglesias | int ret;
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49 | 4acb54ba | Edgar E. Iglesias | |
50 | 97b348e7 | Blue Swirl | ret = cpu_mb_handle_mmu_fault(env, addr, is_write, mmu_idx); |
51 | 4acb54ba | Edgar E. Iglesias | if (unlikely(ret)) {
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52 | 4acb54ba | Edgar E. Iglesias | if (retaddr) {
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53 | 4acb54ba | Edgar E. Iglesias | /* now we have a real cpu fault */
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54 | 20503968 | Blue Swirl | tb = tb_find_pc(retaddr); |
55 | 4acb54ba | Edgar E. Iglesias | if (tb) {
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56 | 4acb54ba | Edgar E. Iglesias | /* the PC is inside the translated code. It means that we have
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57 | 4acb54ba | Edgar E. Iglesias | a virtual CPU fault */
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58 | 20503968 | Blue Swirl | cpu_restore_state(tb, env, retaddr); |
59 | 4acb54ba | Edgar E. Iglesias | } |
60 | 4acb54ba | Edgar E. Iglesias | } |
61 | 1162c041 | Blue Swirl | cpu_loop_exit(env); |
62 | 4acb54ba | Edgar E. Iglesias | } |
63 | 4acb54ba | Edgar E. Iglesias | } |
64 | 4acb54ba | Edgar E. Iglesias | #endif
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65 | 4acb54ba | Edgar E. Iglesias | |
66 | 6d76d23e | Edgar E. Iglesias | void helper_put(uint32_t id, uint32_t ctrl, uint32_t data)
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67 | 6d76d23e | Edgar E. Iglesias | { |
68 | 6d76d23e | Edgar E. Iglesias | int test = ctrl & STREAM_TEST;
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69 | 6d76d23e | Edgar E. Iglesias | int atomic = ctrl & STREAM_ATOMIC;
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70 | 6d76d23e | Edgar E. Iglesias | int control = ctrl & STREAM_CONTROL;
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71 | 6d76d23e | Edgar E. Iglesias | int nonblock = ctrl & STREAM_NONBLOCK;
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72 | 6d76d23e | Edgar E. Iglesias | int exception = ctrl & STREAM_EXCEPTION;
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73 | 6d76d23e | Edgar E. Iglesias | |
74 | 6d76d23e | Edgar E. Iglesias | qemu_log("Unhandled stream put to stream-id=%d data=%x %s%s%s%s%s\n",
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75 | 6d76d23e | Edgar E. Iglesias | id, data, |
76 | 6d76d23e | Edgar E. Iglesias | test ? "t" : "", |
77 | 6d76d23e | Edgar E. Iglesias | nonblock ? "n" : "", |
78 | 6d76d23e | Edgar E. Iglesias | exception ? "e" : "", |
79 | 6d76d23e | Edgar E. Iglesias | control ? "c" : "", |
80 | 6d76d23e | Edgar E. Iglesias | atomic ? "a" : ""); |
81 | 6d76d23e | Edgar E. Iglesias | } |
82 | 6d76d23e | Edgar E. Iglesias | |
83 | 6d76d23e | Edgar E. Iglesias | uint32_t helper_get(uint32_t id, uint32_t ctrl) |
84 | 6d76d23e | Edgar E. Iglesias | { |
85 | 6d76d23e | Edgar E. Iglesias | int test = ctrl & STREAM_TEST;
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86 | 6d76d23e | Edgar E. Iglesias | int atomic = ctrl & STREAM_ATOMIC;
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87 | 6d76d23e | Edgar E. Iglesias | int control = ctrl & STREAM_CONTROL;
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88 | 6d76d23e | Edgar E. Iglesias | int nonblock = ctrl & STREAM_NONBLOCK;
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89 | 6d76d23e | Edgar E. Iglesias | int exception = ctrl & STREAM_EXCEPTION;
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90 | 6d76d23e | Edgar E. Iglesias | |
91 | 6d76d23e | Edgar E. Iglesias | qemu_log("Unhandled stream get from stream-id=%d %s%s%s%s%s\n",
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92 | 6d76d23e | Edgar E. Iglesias | id, |
93 | 6d76d23e | Edgar E. Iglesias | test ? "t" : "", |
94 | 6d76d23e | Edgar E. Iglesias | nonblock ? "n" : "", |
95 | 6d76d23e | Edgar E. Iglesias | exception ? "e" : "", |
96 | 6d76d23e | Edgar E. Iglesias | control ? "c" : "", |
97 | 6d76d23e | Edgar E. Iglesias | atomic ? "a" : ""); |
98 | 6d76d23e | Edgar E. Iglesias | return 0xdead0000 | id; |
99 | 6d76d23e | Edgar E. Iglesias | } |
100 | 6d76d23e | Edgar E. Iglesias | |
101 | 64254eba | Blue Swirl | void helper_raise_exception(CPUMBState *env, uint32_t index)
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102 | 4acb54ba | Edgar E. Iglesias | { |
103 | 4acb54ba | Edgar E. Iglesias | env->exception_index = index; |
104 | 1162c041 | Blue Swirl | cpu_loop_exit(env); |
105 | 4acb54ba | Edgar E. Iglesias | } |
106 | 4acb54ba | Edgar E. Iglesias | |
107 | 64254eba | Blue Swirl | void helper_debug(CPUMBState *env)
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108 | 4acb54ba | Edgar E. Iglesias | { |
109 | 4acb54ba | Edgar E. Iglesias | int i;
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110 | 4acb54ba | Edgar E. Iglesias | |
111 | 4acb54ba | Edgar E. Iglesias | qemu_log("PC=%8.8x\n", env->sregs[SR_PC]);
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112 | 4c24aa0a | Michal Simek | qemu_log("rmsr=%x resr=%x rear=%x debug[%x] imm=%x iflags=%x\n",
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113 | 4c24aa0a | Michal Simek | env->sregs[SR_MSR], env->sregs[SR_ESR], env->sregs[SR_EAR], |
114 | 17c52a43 | Edgar E. Iglesias | env->debug, env->imm, env->iflags); |
115 | 17c52a43 | Edgar E. Iglesias | qemu_log("btaken=%d btarget=%x mode=%s(saved=%s) eip=%d ie=%d\n",
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116 | 17c52a43 | Edgar E. Iglesias | env->btaken, env->btarget, |
117 | 17c52a43 | Edgar E. Iglesias | (env->sregs[SR_MSR] & MSR_UM) ? "user" : "kernel", |
118 | 17c52a43 | Edgar E. Iglesias | (env->sregs[SR_MSR] & MSR_UMS) ? "user" : "kernel", |
119 | 17c52a43 | Edgar E. Iglesias | (env->sregs[SR_MSR] & MSR_EIP), |
120 | 17c52a43 | Edgar E. Iglesias | (env->sregs[SR_MSR] & MSR_IE)); |
121 | 4acb54ba | Edgar E. Iglesias | for (i = 0; i < 32; i++) { |
122 | 4acb54ba | Edgar E. Iglesias | qemu_log("r%2.2d=%8.8x ", i, env->regs[i]);
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123 | 4acb54ba | Edgar E. Iglesias | if ((i + 1) % 4 == 0) |
124 | 4acb54ba | Edgar E. Iglesias | qemu_log("\n");
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125 | 4acb54ba | Edgar E. Iglesias | } |
126 | 4acb54ba | Edgar E. Iglesias | qemu_log("\n\n");
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127 | 4acb54ba | Edgar E. Iglesias | } |
128 | 4acb54ba | Edgar E. Iglesias | |
129 | 4acb54ba | Edgar E. Iglesias | static inline uint32_t compute_carry(uint32_t a, uint32_t b, uint32_t cin) |
130 | 4acb54ba | Edgar E. Iglesias | { |
131 | 4acb54ba | Edgar E. Iglesias | uint32_t cout = 0;
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132 | 4acb54ba | Edgar E. Iglesias | |
133 | 4acb54ba | Edgar E. Iglesias | if ((b == ~0) && cin) |
134 | 4acb54ba | Edgar E. Iglesias | cout = 1;
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135 | 4acb54ba | Edgar E. Iglesias | else if ((~0 - a) < (b + cin)) |
136 | 4acb54ba | Edgar E. Iglesias | cout = 1;
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137 | 4acb54ba | Edgar E. Iglesias | return cout;
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138 | 4acb54ba | Edgar E. Iglesias | } |
139 | 4acb54ba | Edgar E. Iglesias | |
140 | 4acb54ba | Edgar E. Iglesias | uint32_t helper_cmp(uint32_t a, uint32_t b) |
141 | 4acb54ba | Edgar E. Iglesias | { |
142 | 4acb54ba | Edgar E. Iglesias | uint32_t t; |
143 | 4acb54ba | Edgar E. Iglesias | |
144 | 4acb54ba | Edgar E. Iglesias | t = b + ~a + 1;
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145 | 4acb54ba | Edgar E. Iglesias | if ((b & 0x80000000) ^ (a & 0x80000000)) |
146 | 4acb54ba | Edgar E. Iglesias | t = (t & 0x7fffffff) | (b & 0x80000000); |
147 | 4acb54ba | Edgar E. Iglesias | return t;
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148 | 4acb54ba | Edgar E. Iglesias | } |
149 | 4acb54ba | Edgar E. Iglesias | |
150 | 4acb54ba | Edgar E. Iglesias | uint32_t helper_cmpu(uint32_t a, uint32_t b) |
151 | 4acb54ba | Edgar E. Iglesias | { |
152 | 4acb54ba | Edgar E. Iglesias | uint32_t t; |
153 | 4acb54ba | Edgar E. Iglesias | |
154 | 4acb54ba | Edgar E. Iglesias | t = b + ~a + 1;
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155 | 4acb54ba | Edgar E. Iglesias | if ((b & 0x80000000) ^ (a & 0x80000000)) |
156 | 4acb54ba | Edgar E. Iglesias | t = (t & 0x7fffffff) | (a & 0x80000000); |
157 | 4acb54ba | Edgar E. Iglesias | return t;
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158 | 4acb54ba | Edgar E. Iglesias | } |
159 | 4acb54ba | Edgar E. Iglesias | |
160 | 48b5e96f | Edgar E. Iglesias | uint32_t helper_clz(uint32_t t0) |
161 | 48b5e96f | Edgar E. Iglesias | { |
162 | 48b5e96f | Edgar E. Iglesias | return clz32(t0);
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163 | 48b5e96f | Edgar E. Iglesias | } |
164 | 48b5e96f | Edgar E. Iglesias | |
165 | 5d0bb823 | Edgar E. Iglesias | uint32_t helper_carry(uint32_t a, uint32_t b, uint32_t cf) |
166 | 4acb54ba | Edgar E. Iglesias | { |
167 | 5d0bb823 | Edgar E. Iglesias | uint32_t ncf; |
168 | 40cbf5b7 | Edgar E. Iglesias | ncf = compute_carry(a, b, cf); |
169 | 40cbf5b7 | Edgar E. Iglesias | return ncf;
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170 | 4acb54ba | Edgar E. Iglesias | } |
171 | 4acb54ba | Edgar E. Iglesias | |
172 | 64254eba | Blue Swirl | static inline int div_prepare(CPUMBState *env, uint32_t a, uint32_t b) |
173 | 4acb54ba | Edgar E. Iglesias | { |
174 | 4acb54ba | Edgar E. Iglesias | if (b == 0) { |
175 | 4acb54ba | Edgar E. Iglesias | env->sregs[SR_MSR] |= MSR_DZ; |
176 | 821ebb33 | Edgar E. Iglesias | |
177 | 821ebb33 | Edgar E. Iglesias | if ((env->sregs[SR_MSR] & MSR_EE)
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178 | 821ebb33 | Edgar E. Iglesias | && !(env->pvr.regs[2] & PVR2_DIV_ZERO_EXC_MASK)) {
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179 | 821ebb33 | Edgar E. Iglesias | env->sregs[SR_ESR] = ESR_EC_DIVZERO; |
180 | 64254eba | Blue Swirl | helper_raise_exception(env, EXCP_HW_EXCP); |
181 | 821ebb33 | Edgar E. Iglesias | } |
182 | 4acb54ba | Edgar E. Iglesias | return 0; |
183 | 4acb54ba | Edgar E. Iglesias | } |
184 | 4acb54ba | Edgar E. Iglesias | env->sregs[SR_MSR] &= ~MSR_DZ; |
185 | 4acb54ba | Edgar E. Iglesias | return 1; |
186 | 4acb54ba | Edgar E. Iglesias | } |
187 | 4acb54ba | Edgar E. Iglesias | |
188 | 64254eba | Blue Swirl | uint32_t helper_divs(CPUMBState *env, uint32_t a, uint32_t b) |
189 | 4acb54ba | Edgar E. Iglesias | { |
190 | 64254eba | Blue Swirl | if (!div_prepare(env, a, b)) {
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191 | 4acb54ba | Edgar E. Iglesias | return 0; |
192 | 64254eba | Blue Swirl | } |
193 | 4acb54ba | Edgar E. Iglesias | return (int32_t)a / (int32_t)b;
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194 | 4acb54ba | Edgar E. Iglesias | } |
195 | 4acb54ba | Edgar E. Iglesias | |
196 | 64254eba | Blue Swirl | uint32_t helper_divu(CPUMBState *env, uint32_t a, uint32_t b) |
197 | 4acb54ba | Edgar E. Iglesias | { |
198 | 64254eba | Blue Swirl | if (!div_prepare(env, a, b)) {
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199 | 4acb54ba | Edgar E. Iglesias | return 0; |
200 | 64254eba | Blue Swirl | } |
201 | 4acb54ba | Edgar E. Iglesias | return a / b;
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202 | 4acb54ba | Edgar E. Iglesias | } |
203 | 4acb54ba | Edgar E. Iglesias | |
204 | 97694c57 | Edgar E. Iglesias | /* raise FPU exception. */
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205 | 64254eba | Blue Swirl | static void raise_fpu_exception(CPUMBState *env) |
206 | 97694c57 | Edgar E. Iglesias | { |
207 | 97694c57 | Edgar E. Iglesias | env->sregs[SR_ESR] = ESR_EC_FPU; |
208 | 64254eba | Blue Swirl | helper_raise_exception(env, EXCP_HW_EXCP); |
209 | 97694c57 | Edgar E. Iglesias | } |
210 | 97694c57 | Edgar E. Iglesias | |
211 | 64254eba | Blue Swirl | static void update_fpu_flags(CPUMBState *env, int flags) |
212 | 97694c57 | Edgar E. Iglesias | { |
213 | 97694c57 | Edgar E. Iglesias | int raise = 0; |
214 | 97694c57 | Edgar E. Iglesias | |
215 | 97694c57 | Edgar E. Iglesias | if (flags & float_flag_invalid) {
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216 | 97694c57 | Edgar E. Iglesias | env->sregs[SR_FSR] |= FSR_IO; |
217 | 97694c57 | Edgar E. Iglesias | raise = 1;
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218 | 97694c57 | Edgar E. Iglesias | } |
219 | 97694c57 | Edgar E. Iglesias | if (flags & float_flag_divbyzero) {
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220 | 97694c57 | Edgar E. Iglesias | env->sregs[SR_FSR] |= FSR_DZ; |
221 | 97694c57 | Edgar E. Iglesias | raise = 1;
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222 | 97694c57 | Edgar E. Iglesias | } |
223 | 97694c57 | Edgar E. Iglesias | if (flags & float_flag_overflow) {
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224 | 97694c57 | Edgar E. Iglesias | env->sregs[SR_FSR] |= FSR_OF; |
225 | 97694c57 | Edgar E. Iglesias | raise = 1;
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226 | 97694c57 | Edgar E. Iglesias | } |
227 | 97694c57 | Edgar E. Iglesias | if (flags & float_flag_underflow) {
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228 | 97694c57 | Edgar E. Iglesias | env->sregs[SR_FSR] |= FSR_UF; |
229 | 97694c57 | Edgar E. Iglesias | raise = 1;
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230 | 97694c57 | Edgar E. Iglesias | } |
231 | 97694c57 | Edgar E. Iglesias | if (raise
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232 | 97694c57 | Edgar E. Iglesias | && (env->pvr.regs[2] & PVR2_FPU_EXC_MASK)
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233 | 97694c57 | Edgar E. Iglesias | && (env->sregs[SR_MSR] & MSR_EE)) { |
234 | 64254eba | Blue Swirl | raise_fpu_exception(env); |
235 | 97694c57 | Edgar E. Iglesias | } |
236 | 97694c57 | Edgar E. Iglesias | } |
237 | 97694c57 | Edgar E. Iglesias | |
238 | 64254eba | Blue Swirl | uint32_t helper_fadd(CPUMBState *env, uint32_t a, uint32_t b) |
239 | 97694c57 | Edgar E. Iglesias | { |
240 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fd, fa, fb; |
241 | 97694c57 | Edgar E. Iglesias | int flags;
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242 | 97694c57 | Edgar E. Iglesias | |
243 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
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244 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
245 | 97694c57 | Edgar E. Iglesias | fb.l = b; |
246 | 97694c57 | Edgar E. Iglesias | fd.f = float32_add(fa.f, fb.f, &env->fp_status); |
247 | 97694c57 | Edgar E. Iglesias | |
248 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
249 | 64254eba | Blue Swirl | update_fpu_flags(env, flags); |
250 | 97694c57 | Edgar E. Iglesias | return fd.l;
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251 | 97694c57 | Edgar E. Iglesias | } |
252 | 97694c57 | Edgar E. Iglesias | |
253 | 64254eba | Blue Swirl | uint32_t helper_frsub(CPUMBState *env, uint32_t a, uint32_t b) |
254 | 97694c57 | Edgar E. Iglesias | { |
255 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fd, fa, fb; |
256 | 97694c57 | Edgar E. Iglesias | int flags;
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257 | 97694c57 | Edgar E. Iglesias | |
258 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
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259 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
260 | 97694c57 | Edgar E. Iglesias | fb.l = b; |
261 | 97694c57 | Edgar E. Iglesias | fd.f = float32_sub(fb.f, fa.f, &env->fp_status); |
262 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
263 | 64254eba | Blue Swirl | update_fpu_flags(env, flags); |
264 | 97694c57 | Edgar E. Iglesias | return fd.l;
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265 | 97694c57 | Edgar E. Iglesias | } |
266 | 97694c57 | Edgar E. Iglesias | |
267 | 64254eba | Blue Swirl | uint32_t helper_fmul(CPUMBState *env, uint32_t a, uint32_t b) |
268 | 97694c57 | Edgar E. Iglesias | { |
269 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fd, fa, fb; |
270 | 97694c57 | Edgar E. Iglesias | int flags;
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271 | 97694c57 | Edgar E. Iglesias | |
272 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
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273 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
274 | 97694c57 | Edgar E. Iglesias | fb.l = b; |
275 | 97694c57 | Edgar E. Iglesias | fd.f = float32_mul(fa.f, fb.f, &env->fp_status); |
276 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
277 | 64254eba | Blue Swirl | update_fpu_flags(env, flags); |
278 | 97694c57 | Edgar E. Iglesias | |
279 | 97694c57 | Edgar E. Iglesias | return fd.l;
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280 | 97694c57 | Edgar E. Iglesias | } |
281 | 97694c57 | Edgar E. Iglesias | |
282 | 64254eba | Blue Swirl | uint32_t helper_fdiv(CPUMBState *env, uint32_t a, uint32_t b) |
283 | 97694c57 | Edgar E. Iglesias | { |
284 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fd, fa, fb; |
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 | fd.f = float32_div(fb.f, fa.f, &env->fp_status); |
291 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
292 | 64254eba | Blue Swirl | update_fpu_flags(env, flags); |
293 | 97694c57 | Edgar E. Iglesias | |
294 | 97694c57 | Edgar E. Iglesias | return fd.l;
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295 | 97694c57 | Edgar E. Iglesias | } |
296 | 97694c57 | Edgar E. Iglesias | |
297 | 64254eba | Blue Swirl | uint32_t helper_fcmp_un(CPUMBState *env, uint32_t a, uint32_t b) |
298 | 97694c57 | Edgar E. Iglesias | { |
299 | ef9d48da | Edgar E. Iglesias | CPU_FloatU fa, fb; |
300 | ef9d48da | Edgar E. Iglesias | uint32_t r = 0;
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301 | ef9d48da | Edgar E. Iglesias | |
302 | ef9d48da | Edgar E. Iglesias | fa.l = a; |
303 | ef9d48da | Edgar E. Iglesias | fb.l = b; |
304 | ef9d48da | Edgar E. Iglesias | |
305 | ef9d48da | Edgar E. Iglesias | if (float32_is_signaling_nan(fa.f) || float32_is_signaling_nan(fb.f)) {
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306 | 64254eba | Blue Swirl | update_fpu_flags(env, float_flag_invalid); |
307 | ef9d48da | Edgar E. Iglesias | r = 1;
|
308 | ef9d48da | Edgar E. Iglesias | } |
309 | ef9d48da | Edgar E. Iglesias | |
310 | 18569871 | Peter Maydell | if (float32_is_quiet_nan(fa.f) || float32_is_quiet_nan(fb.f)) {
|
311 | ef9d48da | Edgar E. Iglesias | r = 1;
|
312 | ef9d48da | Edgar E. Iglesias | } |
313 | ef9d48da | Edgar E. Iglesias | |
314 | ef9d48da | Edgar E. Iglesias | return r;
|
315 | 97694c57 | Edgar E. Iglesias | } |
316 | 97694c57 | Edgar E. Iglesias | |
317 | 64254eba | Blue Swirl | uint32_t helper_fcmp_lt(CPUMBState *env, uint32_t a, uint32_t b) |
318 | 97694c57 | Edgar E. Iglesias | { |
319 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fa, fb; |
320 | 97694c57 | Edgar E. Iglesias | int r;
|
321 | 97694c57 | Edgar E. Iglesias | int flags;
|
322 | 97694c57 | Edgar E. Iglesias | |
323 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
|
324 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
325 | 97694c57 | Edgar E. Iglesias | fb.l = b; |
326 | 97694c57 | Edgar E. Iglesias | r = float32_lt(fb.f, fa.f, &env->fp_status); |
327 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
328 | 64254eba | Blue Swirl | update_fpu_flags(env, flags & float_flag_invalid); |
329 | 97694c57 | Edgar E. Iglesias | |
330 | 97694c57 | Edgar E. Iglesias | return r;
|
331 | 97694c57 | Edgar E. Iglesias | } |
332 | 97694c57 | Edgar E. Iglesias | |
333 | 64254eba | Blue Swirl | uint32_t helper_fcmp_eq(CPUMBState *env, uint32_t a, uint32_t b) |
334 | 97694c57 | Edgar E. Iglesias | { |
335 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fa, fb; |
336 | 97694c57 | Edgar E. Iglesias | int flags;
|
337 | 97694c57 | Edgar E. Iglesias | int r;
|
338 | 97694c57 | Edgar E. Iglesias | |
339 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
|
340 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
341 | 97694c57 | Edgar E. Iglesias | fb.l = b; |
342 | 211315fb | Aurelien Jarno | r = float32_eq_quiet(fa.f, fb.f, &env->fp_status); |
343 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
344 | 64254eba | Blue Swirl | update_fpu_flags(env, flags & float_flag_invalid); |
345 | 97694c57 | Edgar E. Iglesias | |
346 | 97694c57 | Edgar E. Iglesias | return r;
|
347 | 97694c57 | Edgar E. Iglesias | } |
348 | 97694c57 | Edgar E. Iglesias | |
349 | 64254eba | Blue Swirl | uint32_t helper_fcmp_le(CPUMBState *env, uint32_t a, uint32_t b) |
350 | 97694c57 | Edgar E. Iglesias | { |
351 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fa, fb; |
352 | 97694c57 | Edgar E. Iglesias | int flags;
|
353 | 97694c57 | Edgar E. Iglesias | int r;
|
354 | 97694c57 | Edgar E. Iglesias | |
355 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
356 | 97694c57 | Edgar E. Iglesias | fb.l = b; |
357 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
|
358 | 97694c57 | Edgar E. Iglesias | r = float32_le(fa.f, fb.f, &env->fp_status); |
359 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
360 | 64254eba | Blue Swirl | update_fpu_flags(env, flags & float_flag_invalid); |
361 | 97694c57 | Edgar E. Iglesias | |
362 | 97694c57 | Edgar E. Iglesias | |
363 | 97694c57 | Edgar E. Iglesias | return r;
|
364 | 97694c57 | Edgar E. Iglesias | } |
365 | 97694c57 | Edgar E. Iglesias | |
366 | 64254eba | Blue Swirl | uint32_t helper_fcmp_gt(CPUMBState *env, uint32_t a, uint32_t b) |
367 | 97694c57 | Edgar E. Iglesias | { |
368 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fa, fb; |
369 | 97694c57 | Edgar E. Iglesias | int flags, r;
|
370 | 97694c57 | Edgar E. Iglesias | |
371 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
372 | 97694c57 | Edgar E. Iglesias | fb.l = b; |
373 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
|
374 | 97694c57 | Edgar E. Iglesias | r = float32_lt(fa.f, fb.f, &env->fp_status); |
375 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
376 | 64254eba | Blue Swirl | update_fpu_flags(env, flags & float_flag_invalid); |
377 | 97694c57 | Edgar E. Iglesias | return r;
|
378 | 97694c57 | Edgar E. Iglesias | } |
379 | 97694c57 | Edgar E. Iglesias | |
380 | 64254eba | Blue Swirl | uint32_t helper_fcmp_ne(CPUMBState *env, uint32_t a, uint32_t b) |
381 | 97694c57 | Edgar E. Iglesias | { |
382 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fa, fb; |
383 | 97694c57 | Edgar E. Iglesias | int flags, r;
|
384 | 97694c57 | Edgar E. Iglesias | |
385 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
386 | 97694c57 | Edgar E. Iglesias | fb.l = b; |
387 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
|
388 | 211315fb | Aurelien Jarno | r = !float32_eq_quiet(fa.f, fb.f, &env->fp_status); |
389 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
390 | 64254eba | Blue Swirl | update_fpu_flags(env, flags & float_flag_invalid); |
391 | 97694c57 | Edgar E. Iglesias | |
392 | 97694c57 | Edgar E. Iglesias | return r;
|
393 | 97694c57 | Edgar E. Iglesias | } |
394 | 97694c57 | Edgar E. Iglesias | |
395 | 64254eba | Blue Swirl | uint32_t helper_fcmp_ge(CPUMBState *env, uint32_t a, uint32_t b) |
396 | 97694c57 | Edgar E. Iglesias | { |
397 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fa, fb; |
398 | 97694c57 | Edgar E. Iglesias | int flags, r;
|
399 | 97694c57 | Edgar E. Iglesias | |
400 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
401 | 97694c57 | Edgar E. Iglesias | fb.l = b; |
402 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
|
403 | 97694c57 | Edgar E. Iglesias | r = !float32_lt(fa.f, fb.f, &env->fp_status); |
404 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
405 | 64254eba | Blue Swirl | update_fpu_flags(env, flags & float_flag_invalid); |
406 | 97694c57 | Edgar E. Iglesias | |
407 | 97694c57 | Edgar E. Iglesias | return r;
|
408 | 97694c57 | Edgar E. Iglesias | } |
409 | 97694c57 | Edgar E. Iglesias | |
410 | 64254eba | Blue Swirl | uint32_t helper_flt(CPUMBState *env, uint32_t a) |
411 | 97694c57 | Edgar E. Iglesias | { |
412 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fd, fa; |
413 | 97694c57 | Edgar E. Iglesias | |
414 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
415 | 97694c57 | Edgar E. Iglesias | fd.f = int32_to_float32(fa.l, &env->fp_status); |
416 | 97694c57 | Edgar E. Iglesias | return fd.l;
|
417 | 97694c57 | Edgar E. Iglesias | } |
418 | 97694c57 | Edgar E. Iglesias | |
419 | 64254eba | Blue Swirl | uint32_t helper_fint(CPUMBState *env, uint32_t a) |
420 | 97694c57 | Edgar E. Iglesias | { |
421 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fa; |
422 | 97694c57 | Edgar E. Iglesias | uint32_t r; |
423 | 97694c57 | Edgar E. Iglesias | int flags;
|
424 | 97694c57 | Edgar E. Iglesias | |
425 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
|
426 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
427 | 97694c57 | Edgar E. Iglesias | r = float32_to_int32(fa.f, &env->fp_status); |
428 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
429 | 64254eba | Blue Swirl | update_fpu_flags(env, flags); |
430 | 97694c57 | Edgar E. Iglesias | |
431 | 97694c57 | Edgar E. Iglesias | return r;
|
432 | 97694c57 | Edgar E. Iglesias | } |
433 | 97694c57 | Edgar E. Iglesias | |
434 | 64254eba | Blue Swirl | uint32_t helper_fsqrt(CPUMBState *env, uint32_t a) |
435 | 97694c57 | Edgar E. Iglesias | { |
436 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fd, fa; |
437 | 97694c57 | Edgar E. Iglesias | int flags;
|
438 | 97694c57 | Edgar E. Iglesias | |
439 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
|
440 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
441 | 97694c57 | Edgar E. Iglesias | fd.l = float32_sqrt(fa.f, &env->fp_status); |
442 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
443 | 64254eba | Blue Swirl | update_fpu_flags(env, flags); |
444 | 97694c57 | Edgar E. Iglesias | |
445 | 97694c57 | Edgar E. Iglesias | return fd.l;
|
446 | 97694c57 | Edgar E. Iglesias | } |
447 | 97694c57 | Edgar E. Iglesias | |
448 | 4acb54ba | Edgar E. Iglesias | uint32_t helper_pcmpbf(uint32_t a, uint32_t b) |
449 | 4acb54ba | Edgar E. Iglesias | { |
450 | 4acb54ba | Edgar E. Iglesias | unsigned int i; |
451 | 4acb54ba | Edgar E. Iglesias | uint32_t mask = 0xff000000;
|
452 | 4acb54ba | Edgar E. Iglesias | |
453 | 4acb54ba | Edgar E. Iglesias | for (i = 0; i < 4; i++) { |
454 | 4acb54ba | Edgar E. Iglesias | if ((a & mask) == (b & mask))
|
455 | 4acb54ba | Edgar E. Iglesias | return i + 1; |
456 | 4acb54ba | Edgar E. Iglesias | mask >>= 8;
|
457 | 4acb54ba | Edgar E. Iglesias | } |
458 | 4acb54ba | Edgar E. Iglesias | return 0; |
459 | 4acb54ba | Edgar E. Iglesias | } |
460 | 4acb54ba | Edgar E. Iglesias | |
461 | 64254eba | Blue Swirl | void helper_memalign(CPUMBState *env, uint32_t addr, uint32_t dr, uint32_t wr,
|
462 | 64254eba | Blue Swirl | uint32_t mask) |
463 | 968a40f6 | Edgar E. Iglesias | { |
464 | 968a40f6 | Edgar E. Iglesias | if (addr & mask) {
|
465 | 97f90cbf | Edgar E. Iglesias | qemu_log_mask(CPU_LOG_INT, |
466 | 97f90cbf | Edgar E. Iglesias | "unaligned access addr=%x mask=%x, wr=%d dr=r%d\n",
|
467 | 97f90cbf | Edgar E. Iglesias | addr, mask, wr, dr); |
468 | 97f90cbf | Edgar E. Iglesias | env->sregs[SR_EAR] = addr; |
469 | 968a40f6 | Edgar E. Iglesias | env->sregs[SR_ESR] = ESR_EC_UNALIGNED_DATA | (wr << 10) \
|
470 | 968a40f6 | Edgar E. Iglesias | | (dr & 31) << 5; |
471 | 3aa80988 | Edgar E. Iglesias | if (mask == 3) { |
472 | 968a40f6 | Edgar E. Iglesias | env->sregs[SR_ESR] |= 1 << 11; |
473 | 968a40f6 | Edgar E. Iglesias | } |
474 | 97f90cbf | Edgar E. Iglesias | if (!(env->sregs[SR_MSR] & MSR_EE)) {
|
475 | 97f90cbf | Edgar E. Iglesias | return;
|
476 | 97f90cbf | Edgar E. Iglesias | } |
477 | 64254eba | Blue Swirl | helper_raise_exception(env, EXCP_HW_EXCP); |
478 | 968a40f6 | Edgar E. Iglesias | } |
479 | 968a40f6 | Edgar E. Iglesias | } |
480 | 968a40f6 | Edgar E. Iglesias | |
481 | 64254eba | Blue Swirl | void helper_stackprot(CPUMBState *env, uint32_t addr)
|
482 | 5818dee5 | Edgar E. Iglesias | { |
483 | 5818dee5 | Edgar E. Iglesias | if (addr < env->slr || addr > env->shr) {
|
484 | 5818dee5 | Edgar E. Iglesias | qemu_log("Stack protector violation at %x %x %x\n",
|
485 | 5818dee5 | Edgar E. Iglesias | addr, env->slr, env->shr); |
486 | 5818dee5 | Edgar E. Iglesias | env->sregs[SR_EAR] = addr; |
487 | 5818dee5 | Edgar E. Iglesias | env->sregs[SR_ESR] = ESR_EC_STACKPROT; |
488 | 64254eba | Blue Swirl | helper_raise_exception(env, EXCP_HW_EXCP); |
489 | 5818dee5 | Edgar E. Iglesias | } |
490 | 5818dee5 | Edgar E. Iglesias | } |
491 | 5818dee5 | Edgar E. Iglesias | |
492 | 4acb54ba | Edgar E. Iglesias | #if !defined(CONFIG_USER_ONLY)
|
493 | 4acb54ba | Edgar E. Iglesias | /* Writes/reads to the MMU's special regs end up here. */
|
494 | 64254eba | Blue Swirl | uint32_t helper_mmu_read(CPUMBState *env, uint32_t rn) |
495 | 4acb54ba | Edgar E. Iglesias | { |
496 | 4acb54ba | Edgar E. Iglesias | return mmu_read(env, rn);
|
497 | 4acb54ba | Edgar E. Iglesias | } |
498 | 4acb54ba | Edgar E. Iglesias | |
499 | 64254eba | Blue Swirl | void helper_mmu_write(CPUMBState *env, uint32_t rn, uint32_t v)
|
500 | 4acb54ba | Edgar E. Iglesias | { |
501 | 4acb54ba | Edgar E. Iglesias | mmu_write(env, rn, v); |
502 | 4acb54ba | Edgar E. Iglesias | } |
503 | faed1c2a | Edgar E. Iglesias | |
504 | 64254eba | Blue Swirl | void cpu_unassigned_access(CPUMBState *env, target_phys_addr_t addr,
|
505 | b14ef7c9 | Blue Swirl | int is_write, int is_exec, int is_asi, int size) |
506 | faed1c2a | Edgar E. Iglesias | { |
507 | 97f90cbf | Edgar E. Iglesias | qemu_log_mask(CPU_LOG_INT, "Unassigned " TARGET_FMT_plx " wr=%d exe=%d\n", |
508 | faed1c2a | Edgar E. Iglesias | addr, is_write, is_exec); |
509 | faed1c2a | Edgar E. Iglesias | if (!(env->sregs[SR_MSR] & MSR_EE)) {
|
510 | faed1c2a | Edgar E. Iglesias | return;
|
511 | faed1c2a | Edgar E. Iglesias | } |
512 | faed1c2a | Edgar E. Iglesias | |
513 | 97f90cbf | Edgar E. Iglesias | env->sregs[SR_EAR] = addr; |
514 | faed1c2a | Edgar E. Iglesias | if (is_exec) {
|
515 | 97f90cbf | Edgar E. Iglesias | if ((env->pvr.regs[2] & PVR2_IOPB_BUS_EXC_MASK)) { |
516 | faed1c2a | Edgar E. Iglesias | env->sregs[SR_ESR] = ESR_EC_INSN_BUS; |
517 | 64254eba | Blue Swirl | helper_raise_exception(env, EXCP_HW_EXCP); |
518 | faed1c2a | Edgar E. Iglesias | } |
519 | faed1c2a | Edgar E. Iglesias | } else {
|
520 | 97f90cbf | Edgar E. Iglesias | if ((env->pvr.regs[2] & PVR2_DOPB_BUS_EXC_MASK)) { |
521 | faed1c2a | Edgar E. Iglesias | env->sregs[SR_ESR] = ESR_EC_DATA_BUS; |
522 | 64254eba | Blue Swirl | helper_raise_exception(env, EXCP_HW_EXCP); |
523 | faed1c2a | Edgar E. Iglesias | } |
524 | faed1c2a | Edgar E. Iglesias | } |
525 | faed1c2a | Edgar E. Iglesias | } |
526 | 3c7b48b7 | Paul Brook | #endif |