root / target-microblaze / op_helper.c @ 1de7afc9
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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 | 1de7afc9 | Paolo Bonzini | #include "qemu/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 | 022c62cb | Paolo Bonzini | #include "exec/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 | 022c62cb | Paolo Bonzini | #include "exec/softmmu_template.h" |
34 | 4acb54ba | Edgar E. Iglesias | #define SHIFT 1 |
35 | 022c62cb | Paolo Bonzini | #include "exec/softmmu_template.h" |
36 | 4acb54ba | Edgar E. Iglesias | #define SHIFT 2 |
37 | 022c62cb | Paolo Bonzini | #include "exec/softmmu_template.h" |
38 | 4acb54ba | Edgar E. Iglesias | #define SHIFT 3 |
39 | 022c62cb | Paolo Bonzini | #include "exec/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 | int ret;
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48 | 4acb54ba | Edgar E. Iglesias | |
49 | 97b348e7 | Blue Swirl | ret = cpu_mb_handle_mmu_fault(env, addr, is_write, mmu_idx); |
50 | 4acb54ba | Edgar E. Iglesias | if (unlikely(ret)) {
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51 | 4acb54ba | Edgar E. Iglesias | if (retaddr) {
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52 | 4acb54ba | Edgar E. Iglesias | /* now we have a real cpu fault */
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53 | a8a826a3 | Blue Swirl | cpu_restore_state(env, retaddr); |
54 | 4acb54ba | Edgar E. Iglesias | } |
55 | 1162c041 | Blue Swirl | cpu_loop_exit(env); |
56 | 4acb54ba | Edgar E. Iglesias | } |
57 | 4acb54ba | Edgar E. Iglesias | } |
58 | 4acb54ba | Edgar E. Iglesias | #endif
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59 | 4acb54ba | Edgar E. Iglesias | |
60 | 6d76d23e | Edgar E. Iglesias | void helper_put(uint32_t id, uint32_t ctrl, uint32_t data)
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61 | 6d76d23e | Edgar E. Iglesias | { |
62 | 6d76d23e | Edgar E. Iglesias | int test = ctrl & STREAM_TEST;
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63 | 6d76d23e | Edgar E. Iglesias | int atomic = ctrl & STREAM_ATOMIC;
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64 | 6d76d23e | Edgar E. Iglesias | int control = ctrl & STREAM_CONTROL;
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65 | 6d76d23e | Edgar E. Iglesias | int nonblock = ctrl & STREAM_NONBLOCK;
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66 | 6d76d23e | Edgar E. Iglesias | int exception = ctrl & STREAM_EXCEPTION;
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67 | 6d76d23e | Edgar E. Iglesias | |
68 | 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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69 | 6d76d23e | Edgar E. Iglesias | id, data, |
70 | 6d76d23e | Edgar E. Iglesias | test ? "t" : "", |
71 | 6d76d23e | Edgar E. Iglesias | nonblock ? "n" : "", |
72 | 6d76d23e | Edgar E. Iglesias | exception ? "e" : "", |
73 | 6d76d23e | Edgar E. Iglesias | control ? "c" : "", |
74 | 6d76d23e | Edgar E. Iglesias | atomic ? "a" : ""); |
75 | 6d76d23e | Edgar E. Iglesias | } |
76 | 6d76d23e | Edgar E. Iglesias | |
77 | 6d76d23e | Edgar E. Iglesias | uint32_t helper_get(uint32_t id, uint32_t ctrl) |
78 | 6d76d23e | Edgar E. Iglesias | { |
79 | 6d76d23e | Edgar E. Iglesias | int test = ctrl & STREAM_TEST;
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80 | 6d76d23e | Edgar E. Iglesias | int atomic = ctrl & STREAM_ATOMIC;
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81 | 6d76d23e | Edgar E. Iglesias | int control = ctrl & STREAM_CONTROL;
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82 | 6d76d23e | Edgar E. Iglesias | int nonblock = ctrl & STREAM_NONBLOCK;
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83 | 6d76d23e | Edgar E. Iglesias | int exception = ctrl & STREAM_EXCEPTION;
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84 | 6d76d23e | Edgar E. Iglesias | |
85 | 6d76d23e | Edgar E. Iglesias | qemu_log("Unhandled stream get from stream-id=%d %s%s%s%s%s\n",
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86 | 6d76d23e | Edgar E. Iglesias | id, |
87 | 6d76d23e | Edgar E. Iglesias | test ? "t" : "", |
88 | 6d76d23e | Edgar E. Iglesias | nonblock ? "n" : "", |
89 | 6d76d23e | Edgar E. Iglesias | exception ? "e" : "", |
90 | 6d76d23e | Edgar E. Iglesias | control ? "c" : "", |
91 | 6d76d23e | Edgar E. Iglesias | atomic ? "a" : ""); |
92 | 6d76d23e | Edgar E. Iglesias | return 0xdead0000 | id; |
93 | 6d76d23e | Edgar E. Iglesias | } |
94 | 6d76d23e | Edgar E. Iglesias | |
95 | 64254eba | Blue Swirl | void helper_raise_exception(CPUMBState *env, uint32_t index)
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96 | 4acb54ba | Edgar E. Iglesias | { |
97 | 4acb54ba | Edgar E. Iglesias | env->exception_index = index; |
98 | 1162c041 | Blue Swirl | cpu_loop_exit(env); |
99 | 4acb54ba | Edgar E. Iglesias | } |
100 | 4acb54ba | Edgar E. Iglesias | |
101 | 64254eba | Blue Swirl | void helper_debug(CPUMBState *env)
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102 | 4acb54ba | Edgar E. Iglesias | { |
103 | 4acb54ba | Edgar E. Iglesias | int i;
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104 | 4acb54ba | Edgar E. Iglesias | |
105 | 4acb54ba | Edgar E. Iglesias | qemu_log("PC=%8.8x\n", env->sregs[SR_PC]);
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106 | 4c24aa0a | Michal Simek | qemu_log("rmsr=%x resr=%x rear=%x debug[%x] imm=%x iflags=%x\n",
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107 | 4c24aa0a | Michal Simek | env->sregs[SR_MSR], env->sregs[SR_ESR], env->sregs[SR_EAR], |
108 | 17c52a43 | Edgar E. Iglesias | env->debug, env->imm, env->iflags); |
109 | 17c52a43 | Edgar E. Iglesias | qemu_log("btaken=%d btarget=%x mode=%s(saved=%s) eip=%d ie=%d\n",
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110 | 17c52a43 | Edgar E. Iglesias | env->btaken, env->btarget, |
111 | 17c52a43 | Edgar E. Iglesias | (env->sregs[SR_MSR] & MSR_UM) ? "user" : "kernel", |
112 | 17c52a43 | Edgar E. Iglesias | (env->sregs[SR_MSR] & MSR_UMS) ? "user" : "kernel", |
113 | 17c52a43 | Edgar E. Iglesias | (env->sregs[SR_MSR] & MSR_EIP), |
114 | 17c52a43 | Edgar E. Iglesias | (env->sregs[SR_MSR] & MSR_IE)); |
115 | 4acb54ba | Edgar E. Iglesias | for (i = 0; i < 32; i++) { |
116 | 4acb54ba | Edgar E. Iglesias | qemu_log("r%2.2d=%8.8x ", i, env->regs[i]);
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117 | 4acb54ba | Edgar E. Iglesias | if ((i + 1) % 4 == 0) |
118 | 4acb54ba | Edgar E. Iglesias | qemu_log("\n");
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119 | 4acb54ba | Edgar E. Iglesias | } |
120 | 4acb54ba | Edgar E. Iglesias | qemu_log("\n\n");
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121 | 4acb54ba | Edgar E. Iglesias | } |
122 | 4acb54ba | Edgar E. Iglesias | |
123 | 4acb54ba | Edgar E. Iglesias | static inline uint32_t compute_carry(uint32_t a, uint32_t b, uint32_t cin) |
124 | 4acb54ba | Edgar E. Iglesias | { |
125 | 4acb54ba | Edgar E. Iglesias | uint32_t cout = 0;
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126 | 4acb54ba | Edgar E. Iglesias | |
127 | 4acb54ba | Edgar E. Iglesias | if ((b == ~0) && cin) |
128 | 4acb54ba | Edgar E. Iglesias | cout = 1;
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129 | 4acb54ba | Edgar E. Iglesias | else if ((~0 - a) < (b + cin)) |
130 | 4acb54ba | Edgar E. Iglesias | cout = 1;
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131 | 4acb54ba | Edgar E. Iglesias | return cout;
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132 | 4acb54ba | Edgar E. Iglesias | } |
133 | 4acb54ba | Edgar E. Iglesias | |
134 | 4acb54ba | Edgar E. Iglesias | uint32_t helper_cmp(uint32_t a, uint32_t b) |
135 | 4acb54ba | Edgar E. Iglesias | { |
136 | 4acb54ba | Edgar E. Iglesias | uint32_t t; |
137 | 4acb54ba | Edgar E. Iglesias | |
138 | 4acb54ba | Edgar E. Iglesias | t = b + ~a + 1;
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139 | 4acb54ba | Edgar E. Iglesias | if ((b & 0x80000000) ^ (a & 0x80000000)) |
140 | 4acb54ba | Edgar E. Iglesias | t = (t & 0x7fffffff) | (b & 0x80000000); |
141 | 4acb54ba | Edgar E. Iglesias | return t;
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142 | 4acb54ba | Edgar E. Iglesias | } |
143 | 4acb54ba | Edgar E. Iglesias | |
144 | 4acb54ba | Edgar E. Iglesias | uint32_t helper_cmpu(uint32_t a, uint32_t b) |
145 | 4acb54ba | Edgar E. Iglesias | { |
146 | 4acb54ba | Edgar E. Iglesias | uint32_t t; |
147 | 4acb54ba | Edgar E. Iglesias | |
148 | 4acb54ba | Edgar E. Iglesias | t = b + ~a + 1;
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149 | 4acb54ba | Edgar E. Iglesias | if ((b & 0x80000000) ^ (a & 0x80000000)) |
150 | 4acb54ba | Edgar E. Iglesias | t = (t & 0x7fffffff) | (a & 0x80000000); |
151 | 4acb54ba | Edgar E. Iglesias | return t;
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152 | 4acb54ba | Edgar E. Iglesias | } |
153 | 4acb54ba | Edgar E. Iglesias | |
154 | 48b5e96f | Edgar E. Iglesias | uint32_t helper_clz(uint32_t t0) |
155 | 48b5e96f | Edgar E. Iglesias | { |
156 | 48b5e96f | Edgar E. Iglesias | return clz32(t0);
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157 | 48b5e96f | Edgar E. Iglesias | } |
158 | 48b5e96f | Edgar E. Iglesias | |
159 | 5d0bb823 | Edgar E. Iglesias | uint32_t helper_carry(uint32_t a, uint32_t b, uint32_t cf) |
160 | 4acb54ba | Edgar E. Iglesias | { |
161 | 5d0bb823 | Edgar E. Iglesias | uint32_t ncf; |
162 | 40cbf5b7 | Edgar E. Iglesias | ncf = compute_carry(a, b, cf); |
163 | 40cbf5b7 | Edgar E. Iglesias | return ncf;
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164 | 4acb54ba | Edgar E. Iglesias | } |
165 | 4acb54ba | Edgar E. Iglesias | |
166 | 64254eba | Blue Swirl | static inline int div_prepare(CPUMBState *env, uint32_t a, uint32_t b) |
167 | 4acb54ba | Edgar E. Iglesias | { |
168 | 4acb54ba | Edgar E. Iglesias | if (b == 0) { |
169 | 4acb54ba | Edgar E. Iglesias | env->sregs[SR_MSR] |= MSR_DZ; |
170 | 821ebb33 | Edgar E. Iglesias | |
171 | 821ebb33 | Edgar E. Iglesias | if ((env->sregs[SR_MSR] & MSR_EE)
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172 | 821ebb33 | Edgar E. Iglesias | && !(env->pvr.regs[2] & PVR2_DIV_ZERO_EXC_MASK)) {
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173 | 821ebb33 | Edgar E. Iglesias | env->sregs[SR_ESR] = ESR_EC_DIVZERO; |
174 | 64254eba | Blue Swirl | helper_raise_exception(env, EXCP_HW_EXCP); |
175 | 821ebb33 | Edgar E. Iglesias | } |
176 | 4acb54ba | Edgar E. Iglesias | return 0; |
177 | 4acb54ba | Edgar E. Iglesias | } |
178 | 4acb54ba | Edgar E. Iglesias | env->sregs[SR_MSR] &= ~MSR_DZ; |
179 | 4acb54ba | Edgar E. Iglesias | return 1; |
180 | 4acb54ba | Edgar E. Iglesias | } |
181 | 4acb54ba | Edgar E. Iglesias | |
182 | 64254eba | Blue Swirl | uint32_t helper_divs(CPUMBState *env, uint32_t a, uint32_t b) |
183 | 4acb54ba | Edgar E. Iglesias | { |
184 | 64254eba | Blue Swirl | if (!div_prepare(env, a, b)) {
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185 | 4acb54ba | Edgar E. Iglesias | return 0; |
186 | 64254eba | Blue Swirl | } |
187 | 4acb54ba | Edgar E. Iglesias | return (int32_t)a / (int32_t)b;
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188 | 4acb54ba | Edgar E. Iglesias | } |
189 | 4acb54ba | Edgar E. Iglesias | |
190 | 64254eba | Blue Swirl | uint32_t helper_divu(CPUMBState *env, uint32_t a, uint32_t b) |
191 | 4acb54ba | Edgar E. Iglesias | { |
192 | 64254eba | Blue Swirl | if (!div_prepare(env, a, b)) {
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193 | 4acb54ba | Edgar E. Iglesias | return 0; |
194 | 64254eba | Blue Swirl | } |
195 | 4acb54ba | Edgar E. Iglesias | return a / b;
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196 | 4acb54ba | Edgar E. Iglesias | } |
197 | 4acb54ba | Edgar E. Iglesias | |
198 | 97694c57 | Edgar E. Iglesias | /* raise FPU exception. */
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199 | 64254eba | Blue Swirl | static void raise_fpu_exception(CPUMBState *env) |
200 | 97694c57 | Edgar E. Iglesias | { |
201 | 97694c57 | Edgar E. Iglesias | env->sregs[SR_ESR] = ESR_EC_FPU; |
202 | 64254eba | Blue Swirl | helper_raise_exception(env, EXCP_HW_EXCP); |
203 | 97694c57 | Edgar E. Iglesias | } |
204 | 97694c57 | Edgar E. Iglesias | |
205 | 64254eba | Blue Swirl | static void update_fpu_flags(CPUMBState *env, int flags) |
206 | 97694c57 | Edgar E. Iglesias | { |
207 | 97694c57 | Edgar E. Iglesias | int raise = 0; |
208 | 97694c57 | Edgar E. Iglesias | |
209 | 97694c57 | Edgar E. Iglesias | if (flags & float_flag_invalid) {
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210 | 97694c57 | Edgar E. Iglesias | env->sregs[SR_FSR] |= FSR_IO; |
211 | 97694c57 | Edgar E. Iglesias | raise = 1;
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212 | 97694c57 | Edgar E. Iglesias | } |
213 | 97694c57 | Edgar E. Iglesias | if (flags & float_flag_divbyzero) {
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214 | 97694c57 | Edgar E. Iglesias | env->sregs[SR_FSR] |= FSR_DZ; |
215 | 97694c57 | Edgar E. Iglesias | raise = 1;
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216 | 97694c57 | Edgar E. Iglesias | } |
217 | 97694c57 | Edgar E. Iglesias | if (flags & float_flag_overflow) {
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218 | 97694c57 | Edgar E. Iglesias | env->sregs[SR_FSR] |= FSR_OF; |
219 | 97694c57 | Edgar E. Iglesias | raise = 1;
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220 | 97694c57 | Edgar E. Iglesias | } |
221 | 97694c57 | Edgar E. Iglesias | if (flags & float_flag_underflow) {
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222 | 97694c57 | Edgar E. Iglesias | env->sregs[SR_FSR] |= FSR_UF; |
223 | 97694c57 | Edgar E. Iglesias | raise = 1;
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224 | 97694c57 | Edgar E. Iglesias | } |
225 | 97694c57 | Edgar E. Iglesias | if (raise
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226 | 97694c57 | Edgar E. Iglesias | && (env->pvr.regs[2] & PVR2_FPU_EXC_MASK)
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227 | 97694c57 | Edgar E. Iglesias | && (env->sregs[SR_MSR] & MSR_EE)) { |
228 | 64254eba | Blue Swirl | raise_fpu_exception(env); |
229 | 97694c57 | Edgar E. Iglesias | } |
230 | 97694c57 | Edgar E. Iglesias | } |
231 | 97694c57 | Edgar E. Iglesias | |
232 | 64254eba | Blue Swirl | uint32_t helper_fadd(CPUMBState *env, uint32_t a, uint32_t b) |
233 | 97694c57 | Edgar E. Iglesias | { |
234 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fd, fa, fb; |
235 | 97694c57 | Edgar E. Iglesias | int flags;
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236 | 97694c57 | Edgar E. Iglesias | |
237 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
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238 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
239 | 97694c57 | Edgar E. Iglesias | fb.l = b; |
240 | 97694c57 | Edgar E. Iglesias | fd.f = float32_add(fa.f, fb.f, &env->fp_status); |
241 | 97694c57 | Edgar E. Iglesias | |
242 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
243 | 64254eba | Blue Swirl | update_fpu_flags(env, flags); |
244 | 97694c57 | Edgar E. Iglesias | return fd.l;
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245 | 97694c57 | Edgar E. Iglesias | } |
246 | 97694c57 | Edgar E. Iglesias | |
247 | 64254eba | Blue Swirl | uint32_t helper_frsub(CPUMBState *env, uint32_t a, uint32_t b) |
248 | 97694c57 | Edgar E. Iglesias | { |
249 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fd, fa, fb; |
250 | 97694c57 | Edgar E. Iglesias | int flags;
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251 | 97694c57 | Edgar E. Iglesias | |
252 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
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253 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
254 | 97694c57 | Edgar E. Iglesias | fb.l = b; |
255 | 97694c57 | Edgar E. Iglesias | fd.f = float32_sub(fb.f, fa.f, &env->fp_status); |
256 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
257 | 64254eba | Blue Swirl | update_fpu_flags(env, flags); |
258 | 97694c57 | Edgar E. Iglesias | return fd.l;
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259 | 97694c57 | Edgar E. Iglesias | } |
260 | 97694c57 | Edgar E. Iglesias | |
261 | 64254eba | Blue Swirl | uint32_t helper_fmul(CPUMBState *env, uint32_t a, uint32_t b) |
262 | 97694c57 | Edgar E. Iglesias | { |
263 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fd, fa, fb; |
264 | 97694c57 | Edgar E. Iglesias | int flags;
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265 | 97694c57 | Edgar E. Iglesias | |
266 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
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267 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
268 | 97694c57 | Edgar E. Iglesias | fb.l = b; |
269 | 97694c57 | Edgar E. Iglesias | fd.f = float32_mul(fa.f, fb.f, &env->fp_status); |
270 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
271 | 64254eba | Blue Swirl | update_fpu_flags(env, flags); |
272 | 97694c57 | Edgar E. Iglesias | |
273 | 97694c57 | Edgar E. Iglesias | return fd.l;
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274 | 97694c57 | Edgar E. Iglesias | } |
275 | 97694c57 | Edgar E. Iglesias | |
276 | 64254eba | Blue Swirl | uint32_t helper_fdiv(CPUMBState *env, uint32_t a, uint32_t b) |
277 | 97694c57 | Edgar E. Iglesias | { |
278 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fd, fa, fb; |
279 | 97694c57 | Edgar E. Iglesias | int flags;
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280 | 97694c57 | Edgar E. Iglesias | |
281 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
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282 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
283 | 97694c57 | Edgar E. Iglesias | fb.l = b; |
284 | 97694c57 | Edgar E. Iglesias | fd.f = float32_div(fb.f, fa.f, &env->fp_status); |
285 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
286 | 64254eba | Blue Swirl | update_fpu_flags(env, flags); |
287 | 97694c57 | Edgar E. Iglesias | |
288 | 97694c57 | Edgar E. Iglesias | return fd.l;
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289 | 97694c57 | Edgar E. Iglesias | } |
290 | 97694c57 | Edgar E. Iglesias | |
291 | 64254eba | Blue Swirl | uint32_t helper_fcmp_un(CPUMBState *env, uint32_t a, uint32_t b) |
292 | 97694c57 | Edgar E. Iglesias | { |
293 | ef9d48da | Edgar E. Iglesias | CPU_FloatU fa, fb; |
294 | ef9d48da | Edgar E. Iglesias | uint32_t r = 0;
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295 | ef9d48da | Edgar E. Iglesias | |
296 | ef9d48da | Edgar E. Iglesias | fa.l = a; |
297 | ef9d48da | Edgar E. Iglesias | fb.l = b; |
298 | ef9d48da | Edgar E. Iglesias | |
299 | ef9d48da | Edgar E. Iglesias | if (float32_is_signaling_nan(fa.f) || float32_is_signaling_nan(fb.f)) {
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300 | 64254eba | Blue Swirl | update_fpu_flags(env, float_flag_invalid); |
301 | ef9d48da | Edgar E. Iglesias | r = 1;
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302 | ef9d48da | Edgar E. Iglesias | } |
303 | ef9d48da | Edgar E. Iglesias | |
304 | 18569871 | Peter Maydell | if (float32_is_quiet_nan(fa.f) || float32_is_quiet_nan(fb.f)) {
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305 | ef9d48da | Edgar E. Iglesias | r = 1;
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306 | ef9d48da | Edgar E. Iglesias | } |
307 | ef9d48da | Edgar E. Iglesias | |
308 | ef9d48da | Edgar E. Iglesias | return r;
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309 | 97694c57 | Edgar E. Iglesias | } |
310 | 97694c57 | Edgar E. Iglesias | |
311 | 64254eba | Blue Swirl | uint32_t helper_fcmp_lt(CPUMBState *env, uint32_t a, uint32_t b) |
312 | 97694c57 | Edgar E. Iglesias | { |
313 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fa, fb; |
314 | 97694c57 | Edgar E. Iglesias | int r;
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315 | 97694c57 | Edgar E. Iglesias | int flags;
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316 | 97694c57 | Edgar E. Iglesias | |
317 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
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318 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
319 | 97694c57 | Edgar E. Iglesias | fb.l = b; |
320 | 97694c57 | Edgar E. Iglesias | r = float32_lt(fb.f, fa.f, &env->fp_status); |
321 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
322 | 64254eba | Blue Swirl | update_fpu_flags(env, flags & float_flag_invalid); |
323 | 97694c57 | Edgar E. Iglesias | |
324 | 97694c57 | Edgar E. Iglesias | return r;
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325 | 97694c57 | Edgar E. Iglesias | } |
326 | 97694c57 | Edgar E. Iglesias | |
327 | 64254eba | Blue Swirl | uint32_t helper_fcmp_eq(CPUMBState *env, uint32_t a, uint32_t b) |
328 | 97694c57 | Edgar E. Iglesias | { |
329 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fa, fb; |
330 | 97694c57 | Edgar E. Iglesias | int flags;
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331 | 97694c57 | Edgar E. Iglesias | int r;
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332 | 97694c57 | Edgar E. Iglesias | |
333 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
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334 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
335 | 97694c57 | Edgar E. Iglesias | fb.l = b; |
336 | 211315fb | Aurelien Jarno | r = float32_eq_quiet(fa.f, fb.f, &env->fp_status); |
337 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
338 | 64254eba | Blue Swirl | update_fpu_flags(env, flags & float_flag_invalid); |
339 | 97694c57 | Edgar E. Iglesias | |
340 | 97694c57 | Edgar E. Iglesias | return r;
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341 | 97694c57 | Edgar E. Iglesias | } |
342 | 97694c57 | Edgar E. Iglesias | |
343 | 64254eba | Blue Swirl | uint32_t helper_fcmp_le(CPUMBState *env, uint32_t a, uint32_t b) |
344 | 97694c57 | Edgar E. Iglesias | { |
345 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fa, fb; |
346 | 97694c57 | Edgar E. Iglesias | int flags;
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347 | 97694c57 | Edgar E. Iglesias | int r;
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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);
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352 | 97694c57 | Edgar E. Iglesias | r = float32_le(fa.f, fb.f, &env->fp_status); |
353 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
354 | 64254eba | Blue Swirl | update_fpu_flags(env, flags & float_flag_invalid); |
355 | 97694c57 | Edgar E. Iglesias | |
356 | 97694c57 | Edgar E. Iglesias | |
357 | 97694c57 | Edgar E. Iglesias | return r;
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358 | 97694c57 | Edgar E. Iglesias | } |
359 | 97694c57 | Edgar E. Iglesias | |
360 | 64254eba | Blue Swirl | uint32_t helper_fcmp_gt(CPUMBState *env, uint32_t a, uint32_t b) |
361 | 97694c57 | Edgar E. Iglesias | { |
362 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fa, fb; |
363 | 97694c57 | Edgar E. Iglesias | int flags, r;
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364 | 97694c57 | Edgar E. Iglesias | |
365 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
366 | 97694c57 | Edgar E. Iglesias | fb.l = b; |
367 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
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368 | 97694c57 | Edgar E. Iglesias | r = float32_lt(fa.f, fb.f, &env->fp_status); |
369 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
370 | 64254eba | Blue Swirl | update_fpu_flags(env, flags & float_flag_invalid); |
371 | 97694c57 | Edgar E. Iglesias | return r;
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372 | 97694c57 | Edgar E. Iglesias | } |
373 | 97694c57 | Edgar E. Iglesias | |
374 | 64254eba | Blue Swirl | uint32_t helper_fcmp_ne(CPUMBState *env, uint32_t a, uint32_t b) |
375 | 97694c57 | Edgar E. Iglesias | { |
376 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fa, fb; |
377 | 97694c57 | Edgar E. Iglesias | int flags, r;
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378 | 97694c57 | Edgar E. Iglesias | |
379 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
380 | 97694c57 | Edgar E. Iglesias | fb.l = b; |
381 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
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382 | 211315fb | Aurelien Jarno | r = !float32_eq_quiet(fa.f, fb.f, &env->fp_status); |
383 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
384 | 64254eba | Blue Swirl | update_fpu_flags(env, flags & float_flag_invalid); |
385 | 97694c57 | Edgar E. Iglesias | |
386 | 97694c57 | Edgar E. Iglesias | return r;
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387 | 97694c57 | Edgar E. Iglesias | } |
388 | 97694c57 | Edgar E. Iglesias | |
389 | 64254eba | Blue Swirl | uint32_t helper_fcmp_ge(CPUMBState *env, uint32_t a, uint32_t b) |
390 | 97694c57 | Edgar E. Iglesias | { |
391 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fa, fb; |
392 | 97694c57 | Edgar E. Iglesias | int flags, r;
|
393 | 97694c57 | Edgar E. Iglesias | |
394 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
395 | 97694c57 | Edgar E. Iglesias | fb.l = b; |
396 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
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397 | 97694c57 | Edgar E. Iglesias | r = !float32_lt(fa.f, fb.f, &env->fp_status); |
398 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
399 | 64254eba | Blue Swirl | update_fpu_flags(env, flags & float_flag_invalid); |
400 | 97694c57 | Edgar E. Iglesias | |
401 | 97694c57 | Edgar E. Iglesias | return r;
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402 | 97694c57 | Edgar E. Iglesias | } |
403 | 97694c57 | Edgar E. Iglesias | |
404 | 64254eba | Blue Swirl | uint32_t helper_flt(CPUMBState *env, uint32_t a) |
405 | 97694c57 | Edgar E. Iglesias | { |
406 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fd, fa; |
407 | 97694c57 | Edgar E. Iglesias | |
408 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
409 | 97694c57 | Edgar E. Iglesias | fd.f = int32_to_float32(fa.l, &env->fp_status); |
410 | 97694c57 | Edgar E. Iglesias | return fd.l;
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411 | 97694c57 | Edgar E. Iglesias | } |
412 | 97694c57 | Edgar E. Iglesias | |
413 | 64254eba | Blue Swirl | uint32_t helper_fint(CPUMBState *env, uint32_t a) |
414 | 97694c57 | Edgar E. Iglesias | { |
415 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fa; |
416 | 97694c57 | Edgar E. Iglesias | uint32_t r; |
417 | 97694c57 | Edgar E. Iglesias | int flags;
|
418 | 97694c57 | Edgar E. Iglesias | |
419 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
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420 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
421 | 97694c57 | Edgar E. Iglesias | r = float32_to_int32(fa.f, &env->fp_status); |
422 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
423 | 64254eba | Blue Swirl | update_fpu_flags(env, flags); |
424 | 97694c57 | Edgar E. Iglesias | |
425 | 97694c57 | Edgar E. Iglesias | return r;
|
426 | 97694c57 | Edgar E. Iglesias | } |
427 | 97694c57 | Edgar E. Iglesias | |
428 | 64254eba | Blue Swirl | uint32_t helper_fsqrt(CPUMBState *env, uint32_t a) |
429 | 97694c57 | Edgar E. Iglesias | { |
430 | 97694c57 | Edgar E. Iglesias | CPU_FloatU fd, fa; |
431 | 97694c57 | Edgar E. Iglesias | int flags;
|
432 | 97694c57 | Edgar E. Iglesias | |
433 | 97694c57 | Edgar E. Iglesias | set_float_exception_flags(0, &env->fp_status);
|
434 | 97694c57 | Edgar E. Iglesias | fa.l = a; |
435 | 97694c57 | Edgar E. Iglesias | fd.l = float32_sqrt(fa.f, &env->fp_status); |
436 | 97694c57 | Edgar E. Iglesias | flags = get_float_exception_flags(&env->fp_status); |
437 | 64254eba | Blue Swirl | update_fpu_flags(env, flags); |
438 | 97694c57 | Edgar E. Iglesias | |
439 | 97694c57 | Edgar E. Iglesias | return fd.l;
|
440 | 97694c57 | Edgar E. Iglesias | } |
441 | 97694c57 | Edgar E. Iglesias | |
442 | 4acb54ba | Edgar E. Iglesias | uint32_t helper_pcmpbf(uint32_t a, uint32_t b) |
443 | 4acb54ba | Edgar E. Iglesias | { |
444 | 4acb54ba | Edgar E. Iglesias | unsigned int i; |
445 | 4acb54ba | Edgar E. Iglesias | uint32_t mask = 0xff000000;
|
446 | 4acb54ba | Edgar E. Iglesias | |
447 | 4acb54ba | Edgar E. Iglesias | for (i = 0; i < 4; i++) { |
448 | 4acb54ba | Edgar E. Iglesias | if ((a & mask) == (b & mask))
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449 | 4acb54ba | Edgar E. Iglesias | return i + 1; |
450 | 4acb54ba | Edgar E. Iglesias | mask >>= 8;
|
451 | 4acb54ba | Edgar E. Iglesias | } |
452 | 4acb54ba | Edgar E. Iglesias | return 0; |
453 | 4acb54ba | Edgar E. Iglesias | } |
454 | 4acb54ba | Edgar E. Iglesias | |
455 | 64254eba | Blue Swirl | void helper_memalign(CPUMBState *env, uint32_t addr, uint32_t dr, uint32_t wr,
|
456 | 64254eba | Blue Swirl | uint32_t mask) |
457 | 968a40f6 | Edgar E. Iglesias | { |
458 | 968a40f6 | Edgar E. Iglesias | if (addr & mask) {
|
459 | 97f90cbf | Edgar E. Iglesias | qemu_log_mask(CPU_LOG_INT, |
460 | 97f90cbf | Edgar E. Iglesias | "unaligned access addr=%x mask=%x, wr=%d dr=r%d\n",
|
461 | 97f90cbf | Edgar E. Iglesias | addr, mask, wr, dr); |
462 | 97f90cbf | Edgar E. Iglesias | env->sregs[SR_EAR] = addr; |
463 | 968a40f6 | Edgar E. Iglesias | env->sregs[SR_ESR] = ESR_EC_UNALIGNED_DATA | (wr << 10) \
|
464 | 968a40f6 | Edgar E. Iglesias | | (dr & 31) << 5; |
465 | 3aa80988 | Edgar E. Iglesias | if (mask == 3) { |
466 | 968a40f6 | Edgar E. Iglesias | env->sregs[SR_ESR] |= 1 << 11; |
467 | 968a40f6 | Edgar E. Iglesias | } |
468 | 97f90cbf | Edgar E. Iglesias | if (!(env->sregs[SR_MSR] & MSR_EE)) {
|
469 | 97f90cbf | Edgar E. Iglesias | return;
|
470 | 97f90cbf | Edgar E. Iglesias | } |
471 | 64254eba | Blue Swirl | helper_raise_exception(env, EXCP_HW_EXCP); |
472 | 968a40f6 | Edgar E. Iglesias | } |
473 | 968a40f6 | Edgar E. Iglesias | } |
474 | 968a40f6 | Edgar E. Iglesias | |
475 | 64254eba | Blue Swirl | void helper_stackprot(CPUMBState *env, uint32_t addr)
|
476 | 5818dee5 | Edgar E. Iglesias | { |
477 | 5818dee5 | Edgar E. Iglesias | if (addr < env->slr || addr > env->shr) {
|
478 | 5818dee5 | Edgar E. Iglesias | qemu_log("Stack protector violation at %x %x %x\n",
|
479 | 5818dee5 | Edgar E. Iglesias | addr, env->slr, env->shr); |
480 | 5818dee5 | Edgar E. Iglesias | env->sregs[SR_EAR] = addr; |
481 | 5818dee5 | Edgar E. Iglesias | env->sregs[SR_ESR] = ESR_EC_STACKPROT; |
482 | 64254eba | Blue Swirl | helper_raise_exception(env, EXCP_HW_EXCP); |
483 | 5818dee5 | Edgar E. Iglesias | } |
484 | 5818dee5 | Edgar E. Iglesias | } |
485 | 5818dee5 | Edgar E. Iglesias | |
486 | 4acb54ba | Edgar E. Iglesias | #if !defined(CONFIG_USER_ONLY)
|
487 | 4acb54ba | Edgar E. Iglesias | /* Writes/reads to the MMU's special regs end up here. */
|
488 | 64254eba | Blue Swirl | uint32_t helper_mmu_read(CPUMBState *env, uint32_t rn) |
489 | 4acb54ba | Edgar E. Iglesias | { |
490 | 4acb54ba | Edgar E. Iglesias | return mmu_read(env, rn);
|
491 | 4acb54ba | Edgar E. Iglesias | } |
492 | 4acb54ba | Edgar E. Iglesias | |
493 | 64254eba | Blue Swirl | void helper_mmu_write(CPUMBState *env, uint32_t rn, uint32_t v)
|
494 | 4acb54ba | Edgar E. Iglesias | { |
495 | 4acb54ba | Edgar E. Iglesias | mmu_write(env, rn, v); |
496 | 4acb54ba | Edgar E. Iglesias | } |
497 | faed1c2a | Edgar E. Iglesias | |
498 | a8170e5e | Avi Kivity | void cpu_unassigned_access(CPUMBState *env, hwaddr addr,
|
499 | b14ef7c9 | Blue Swirl | int is_write, int is_exec, int is_asi, int size) |
500 | faed1c2a | Edgar E. Iglesias | { |
501 | 97f90cbf | Edgar E. Iglesias | qemu_log_mask(CPU_LOG_INT, "Unassigned " TARGET_FMT_plx " wr=%d exe=%d\n", |
502 | faed1c2a | Edgar E. Iglesias | addr, is_write, is_exec); |
503 | faed1c2a | Edgar E. Iglesias | if (!(env->sregs[SR_MSR] & MSR_EE)) {
|
504 | faed1c2a | Edgar E. Iglesias | return;
|
505 | faed1c2a | Edgar E. Iglesias | } |
506 | faed1c2a | Edgar E. Iglesias | |
507 | 97f90cbf | Edgar E. Iglesias | env->sregs[SR_EAR] = addr; |
508 | faed1c2a | Edgar E. Iglesias | if (is_exec) {
|
509 | 97f90cbf | Edgar E. Iglesias | if ((env->pvr.regs[2] & PVR2_IOPB_BUS_EXC_MASK)) { |
510 | faed1c2a | Edgar E. Iglesias | env->sregs[SR_ESR] = ESR_EC_INSN_BUS; |
511 | 64254eba | Blue Swirl | helper_raise_exception(env, EXCP_HW_EXCP); |
512 | faed1c2a | Edgar E. Iglesias | } |
513 | faed1c2a | Edgar E. Iglesias | } else {
|
514 | 97f90cbf | Edgar E. Iglesias | if ((env->pvr.regs[2] & PVR2_DOPB_BUS_EXC_MASK)) { |
515 | faed1c2a | Edgar E. Iglesias | env->sregs[SR_ESR] = ESR_EC_DATA_BUS; |
516 | 64254eba | Blue Swirl | helper_raise_exception(env, EXCP_HW_EXCP); |
517 | faed1c2a | Edgar E. Iglesias | } |
518 | faed1c2a | Edgar E. Iglesias | } |
519 | faed1c2a | Edgar E. Iglesias | } |
520 | 3c7b48b7 | Paul Brook | #endif |