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1 | 9df217a3 | bellard | /*
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2 | 9df217a3 | bellard | * KQEMU support
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3 | 9df217a3 | bellard | *
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4 | 9df217a3 | bellard | * Copyright (c) 2005 Fabrice Bellard
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5 | 9df217a3 | bellard | *
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6 | 9df217a3 | bellard | * This library is free software; you can redistribute it and/or
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7 | 9df217a3 | bellard | * modify it under the terms of the GNU Lesser General Public
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8 | 9df217a3 | bellard | * License as published by the Free Software Foundation; either
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9 | 9df217a3 | bellard | * version 2 of the License, or (at your option) any later version.
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10 | 9df217a3 | bellard | *
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11 | 9df217a3 | bellard | * This library is distributed in the hope that it will be useful,
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12 | 9df217a3 | bellard | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | 9df217a3 | bellard | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | 9df217a3 | bellard | * Lesser General Public License for more details.
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15 | 9df217a3 | bellard | *
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16 | 9df217a3 | bellard | * You should have received a copy of the GNU Lesser General Public
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17 | 9df217a3 | bellard | * License along with this library; if not, write to the Free Software
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18 | 9df217a3 | bellard | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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19 | 9df217a3 | bellard | */
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20 | 9df217a3 | bellard | #include "config.h" |
21 | 9df217a3 | bellard | #ifdef _WIN32
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22 | 9df217a3 | bellard | #include <windows.h> |
23 | 9df217a3 | bellard | #else
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24 | 9df217a3 | bellard | #include <sys/types.h> |
25 | 9df217a3 | bellard | #include <sys/mman.h> |
26 | 9df217a3 | bellard | #endif
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27 | 9df217a3 | bellard | #include <stdlib.h> |
28 | 9df217a3 | bellard | #include <stdio.h> |
29 | 9df217a3 | bellard | #include <stdarg.h> |
30 | 9df217a3 | bellard | #include <string.h> |
31 | 9df217a3 | bellard | #include <errno.h> |
32 | 9df217a3 | bellard | #include <unistd.h> |
33 | 9df217a3 | bellard | #include <inttypes.h> |
34 | 9df217a3 | bellard | |
35 | 9df217a3 | bellard | #include "cpu.h" |
36 | 9df217a3 | bellard | #include "exec-all.h" |
37 | 9df217a3 | bellard | |
38 | 9df217a3 | bellard | #ifdef USE_KQEMU
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39 | 9df217a3 | bellard | |
40 | 9df217a3 | bellard | #define DEBUG
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41 | 9df217a3 | bellard | |
42 | 9df217a3 | bellard | #include <unistd.h> |
43 | 9df217a3 | bellard | #include <fcntl.h> |
44 | 9df217a3 | bellard | #include <sys/ioctl.h> |
45 | 9df217a3 | bellard | #include "kqemu/kqemu.h" |
46 | 9df217a3 | bellard | |
47 | 9df217a3 | bellard | #define KQEMU_DEVICE "/dev/kqemu" |
48 | 9df217a3 | bellard | |
49 | 9df217a3 | bellard | int kqemu_allowed = 1; |
50 | 9df217a3 | bellard | int kqemu_fd = -1; |
51 | 9df217a3 | bellard | unsigned long *pages_to_flush; |
52 | 9df217a3 | bellard | unsigned int nb_pages_to_flush; |
53 | 9df217a3 | bellard | extern uint32_t **l1_phys_map;
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54 | 9df217a3 | bellard | |
55 | 9df217a3 | bellard | #define cpuid(index, eax, ebx, ecx, edx) \
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56 | 9df217a3 | bellard | asm volatile ("cpuid" \ |
57 | 9df217a3 | bellard | : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx) \ |
58 | 9df217a3 | bellard | : "0" (index))
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59 | 9df217a3 | bellard | |
60 | 9df217a3 | bellard | static int is_cpuid_supported(void) |
61 | 9df217a3 | bellard | { |
62 | 9df217a3 | bellard | int v0, v1;
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63 | 9df217a3 | bellard | asm volatile ("pushf\n" |
64 | 9df217a3 | bellard | "popl %0\n"
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65 | 9df217a3 | bellard | "movl %0, %1\n"
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66 | 9df217a3 | bellard | "xorl $0x00200000, %0\n"
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67 | 9df217a3 | bellard | "pushl %0\n"
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68 | 9df217a3 | bellard | "popf\n"
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69 | 9df217a3 | bellard | "pushf\n"
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70 | 9df217a3 | bellard | "popl %0\n"
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71 | 9df217a3 | bellard | : "=a" (v0), "=d" (v1) |
72 | 9df217a3 | bellard | : |
73 | 9df217a3 | bellard | : "cc");
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74 | 9df217a3 | bellard | return (v0 != v1);
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75 | 9df217a3 | bellard | } |
76 | 9df217a3 | bellard | |
77 | 9df217a3 | bellard | static void kqemu_update_cpuid(CPUState *env) |
78 | 9df217a3 | bellard | { |
79 | 9df217a3 | bellard | int critical_features_mask, features;
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80 | 9df217a3 | bellard | uint32_t eax, ebx, ecx, edx; |
81 | 9df217a3 | bellard | |
82 | 9df217a3 | bellard | /* the following features are kept identical on the host and
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83 | 9df217a3 | bellard | target cpus because they are important for user code. Strictly
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84 | 9df217a3 | bellard | speaking, only SSE really matters because the OS must support
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85 | 9df217a3 | bellard | it if the user code uses it. */
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86 | 9df217a3 | bellard | critical_features_mask = |
87 | 9df217a3 | bellard | CPUID_CMOV | CPUID_CX8 | |
88 | 9df217a3 | bellard | CPUID_FXSR | CPUID_MMX | CPUID_SSE | |
89 | 9df217a3 | bellard | CPUID_SSE2; |
90 | 9df217a3 | bellard | if (!is_cpuid_supported()) {
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91 | 9df217a3 | bellard | features = 0;
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92 | 9df217a3 | bellard | } else {
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93 | 9df217a3 | bellard | cpuid(1, eax, ebx, ecx, edx);
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94 | 9df217a3 | bellard | features = edx; |
95 | 9df217a3 | bellard | } |
96 | 9df217a3 | bellard | env->cpuid_features = (env->cpuid_features & ~critical_features_mask) | |
97 | 9df217a3 | bellard | (features & critical_features_mask); |
98 | 9df217a3 | bellard | /* XXX: we could update more of the target CPUID state so that the
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99 | 9df217a3 | bellard | non accelerated code sees exactly the same CPU features as the
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100 | 9df217a3 | bellard | accelerated code */
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101 | 9df217a3 | bellard | } |
102 | 9df217a3 | bellard | |
103 | 9df217a3 | bellard | int kqemu_init(CPUState *env)
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104 | 9df217a3 | bellard | { |
105 | 9df217a3 | bellard | struct kqemu_init init;
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106 | 9df217a3 | bellard | int ret, version;
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107 | 9df217a3 | bellard | |
108 | 9df217a3 | bellard | if (!kqemu_allowed)
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109 | 9df217a3 | bellard | return -1; |
110 | 9df217a3 | bellard | |
111 | 9df217a3 | bellard | kqemu_fd = open(KQEMU_DEVICE, O_RDWR); |
112 | 9df217a3 | bellard | if (kqemu_fd < 0) { |
113 | 9df217a3 | bellard | fprintf(stderr, "Could not open '%s' - QEMU acceleration layer not activated\n", KQEMU_DEVICE);
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114 | 9df217a3 | bellard | return -1; |
115 | 9df217a3 | bellard | } |
116 | 9df217a3 | bellard | version = 0;
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117 | 9df217a3 | bellard | ioctl(kqemu_fd, KQEMU_GET_VERSION, &version); |
118 | 9df217a3 | bellard | if (version != KQEMU_VERSION) {
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119 | 9df217a3 | bellard | fprintf(stderr, "Version mismatch between kqemu module and qemu (%08x %08x) - disabling kqemu use\n",
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120 | 9df217a3 | bellard | version, KQEMU_VERSION); |
121 | 9df217a3 | bellard | goto fail;
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122 | 9df217a3 | bellard | } |
123 | 9df217a3 | bellard | |
124 | 9df217a3 | bellard | pages_to_flush = qemu_vmalloc(KQEMU_MAX_PAGES_TO_FLUSH * |
125 | 9df217a3 | bellard | sizeof(unsigned long)); |
126 | 9df217a3 | bellard | if (!pages_to_flush)
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127 | 9df217a3 | bellard | goto fail;
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128 | 9df217a3 | bellard | |
129 | 9df217a3 | bellard | init.ram_base = phys_ram_base; |
130 | 9df217a3 | bellard | init.ram_size = phys_ram_size; |
131 | 9df217a3 | bellard | init.ram_dirty = phys_ram_dirty; |
132 | 9df217a3 | bellard | init.phys_to_ram_map = l1_phys_map; |
133 | 9df217a3 | bellard | init.pages_to_flush = pages_to_flush; |
134 | 9df217a3 | bellard | ret = ioctl(kqemu_fd, KQEMU_INIT, &init); |
135 | 9df217a3 | bellard | if (ret < 0) { |
136 | 9df217a3 | bellard | fprintf(stderr, "Error %d while initializing QEMU acceleration layer - disabling it for now\n", ret);
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137 | 9df217a3 | bellard | fail:
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138 | 9df217a3 | bellard | close(kqemu_fd); |
139 | 9df217a3 | bellard | kqemu_fd = -1;
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140 | 9df217a3 | bellard | return -1; |
141 | 9df217a3 | bellard | } |
142 | 9df217a3 | bellard | kqemu_update_cpuid(env); |
143 | 9df217a3 | bellard | env->kqemu_enabled = 1;
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144 | 9df217a3 | bellard | nb_pages_to_flush = 0;
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145 | 9df217a3 | bellard | return 0; |
146 | 9df217a3 | bellard | } |
147 | 9df217a3 | bellard | |
148 | 9df217a3 | bellard | void kqemu_flush_page(CPUState *env, target_ulong addr)
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149 | 9df217a3 | bellard | { |
150 | 9df217a3 | bellard | #ifdef DEBUG
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151 | 9df217a3 | bellard | if (loglevel & CPU_LOG_INT) {
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152 | 9df217a3 | bellard | fprintf(logfile, "kqemu_flush_page: addr=" TARGET_FMT_lx "\n", addr); |
153 | 9df217a3 | bellard | } |
154 | 9df217a3 | bellard | #endif
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155 | 9df217a3 | bellard | if (nb_pages_to_flush >= KQEMU_MAX_PAGES_TO_FLUSH)
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156 | 9df217a3 | bellard | nb_pages_to_flush = KQEMU_FLUSH_ALL; |
157 | 9df217a3 | bellard | else
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158 | 9df217a3 | bellard | pages_to_flush[nb_pages_to_flush++] = addr; |
159 | 9df217a3 | bellard | } |
160 | 9df217a3 | bellard | |
161 | 9df217a3 | bellard | void kqemu_flush(CPUState *env, int global) |
162 | 9df217a3 | bellard | { |
163 | 9df217a3 | bellard | #ifdef DEBUG
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164 | 9df217a3 | bellard | if (loglevel & CPU_LOG_INT) {
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165 | 9df217a3 | bellard | fprintf(logfile, "kqemu_flush:\n");
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166 | 9df217a3 | bellard | } |
167 | 9df217a3 | bellard | #endif
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168 | 9df217a3 | bellard | nb_pages_to_flush = KQEMU_FLUSH_ALL; |
169 | 9df217a3 | bellard | } |
170 | 9df217a3 | bellard | |
171 | 9df217a3 | bellard | struct fpstate {
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172 | 9df217a3 | bellard | uint16_t fpuc; |
173 | 9df217a3 | bellard | uint16_t dummy1; |
174 | 9df217a3 | bellard | uint16_t fpus; |
175 | 9df217a3 | bellard | uint16_t dummy2; |
176 | 9df217a3 | bellard | uint16_t fptag; |
177 | 9df217a3 | bellard | uint16_t dummy3; |
178 | 9df217a3 | bellard | |
179 | 9df217a3 | bellard | uint32_t fpip; |
180 | 9df217a3 | bellard | uint32_t fpcs; |
181 | 9df217a3 | bellard | uint32_t fpoo; |
182 | 9df217a3 | bellard | uint32_t fpos; |
183 | 9df217a3 | bellard | uint8_t fpregs1[8 * 10]; |
184 | 9df217a3 | bellard | }; |
185 | 9df217a3 | bellard | |
186 | 9df217a3 | bellard | struct fpxstate {
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187 | 9df217a3 | bellard | uint16_t fpuc; |
188 | 9df217a3 | bellard | uint16_t fpus; |
189 | 9df217a3 | bellard | uint16_t fptag; |
190 | 9df217a3 | bellard | uint16_t fop; |
191 | 9df217a3 | bellard | uint32_t fpuip; |
192 | 9df217a3 | bellard | uint16_t cs_sel; |
193 | 9df217a3 | bellard | uint16_t dummy0; |
194 | 9df217a3 | bellard | uint32_t fpudp; |
195 | 9df217a3 | bellard | uint16_t ds_sel; |
196 | 9df217a3 | bellard | uint16_t dummy1; |
197 | 9df217a3 | bellard | uint32_t mxcsr; |
198 | 9df217a3 | bellard | uint32_t mxcsr_mask; |
199 | 9df217a3 | bellard | uint8_t fpregs1[8 * 16]; |
200 | 9df217a3 | bellard | uint8_t xmm_regs[8 * 16]; |
201 | 9df217a3 | bellard | uint8_t dummy2[224];
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202 | 9df217a3 | bellard | }; |
203 | 9df217a3 | bellard | |
204 | 9df217a3 | bellard | static struct fpxstate fpx1 __attribute__((aligned(16))); |
205 | 9df217a3 | bellard | |
206 | 9df217a3 | bellard | static void restore_native_fp_frstor(CPUState *env) |
207 | 9df217a3 | bellard | { |
208 | 9df217a3 | bellard | int fptag, i, j;
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209 | 9df217a3 | bellard | struct fpstate fp1, *fp = &fp1;
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210 | 9df217a3 | bellard | |
211 | 9df217a3 | bellard | fp->fpuc = env->fpuc; |
212 | 9df217a3 | bellard | fp->fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; |
213 | 9df217a3 | bellard | fptag = 0;
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214 | 9df217a3 | bellard | for (i=7; i>=0; i--) { |
215 | 9df217a3 | bellard | fptag <<= 2;
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216 | 9df217a3 | bellard | if (env->fptags[i]) {
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217 | 9df217a3 | bellard | fptag |= 3;
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218 | 9df217a3 | bellard | } else {
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219 | 9df217a3 | bellard | /* the FPU automatically computes it */
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220 | 9df217a3 | bellard | } |
221 | 9df217a3 | bellard | } |
222 | 9df217a3 | bellard | fp->fptag = fptag; |
223 | 9df217a3 | bellard | j = env->fpstt; |
224 | 9df217a3 | bellard | for(i = 0;i < 8; i++) { |
225 | 9df217a3 | bellard | memcpy(&fp->fpregs1[i * 10], &env->fpregs[j].d, 10); |
226 | 9df217a3 | bellard | j = (j + 1) & 7; |
227 | 9df217a3 | bellard | } |
228 | 9df217a3 | bellard | asm volatile ("frstor %0" : "=m" (*fp)); |
229 | 9df217a3 | bellard | } |
230 | 9df217a3 | bellard | |
231 | 9df217a3 | bellard | static void save_native_fp_fsave(CPUState *env) |
232 | 9df217a3 | bellard | { |
233 | 9df217a3 | bellard | int fptag, i, j;
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234 | 9df217a3 | bellard | uint16_t fpuc; |
235 | 9df217a3 | bellard | struct fpstate fp1, *fp = &fp1;
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236 | 9df217a3 | bellard | |
237 | 9df217a3 | bellard | asm volatile ("fsave %0" : : "m" (*fp)); |
238 | 9df217a3 | bellard | env->fpuc = fp->fpuc; |
239 | 9df217a3 | bellard | env->fpstt = (fp->fpus >> 11) & 7; |
240 | 9df217a3 | bellard | env->fpus = fp->fpus & ~0x3800;
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241 | 9df217a3 | bellard | fptag = fp->fptag; |
242 | 9df217a3 | bellard | for(i = 0;i < 8; i++) { |
243 | 9df217a3 | bellard | env->fptags[i] = ((fptag & 3) == 3); |
244 | 9df217a3 | bellard | fptag >>= 2;
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245 | 9df217a3 | bellard | } |
246 | 9df217a3 | bellard | j = env->fpstt; |
247 | 9df217a3 | bellard | for(i = 0;i < 8; i++) { |
248 | 9df217a3 | bellard | memcpy(&env->fpregs[j].d, &fp->fpregs1[i * 10], 10); |
249 | 9df217a3 | bellard | j = (j + 1) & 7; |
250 | 9df217a3 | bellard | } |
251 | 9df217a3 | bellard | /* we must restore the default rounding state */
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252 | 9df217a3 | bellard | fpuc = 0x037f | (env->fpuc & (3 << 10)); |
253 | 9df217a3 | bellard | asm volatile("fldcw %0" : : "m" (fpuc)); |
254 | 9df217a3 | bellard | } |
255 | 9df217a3 | bellard | |
256 | 9df217a3 | bellard | static void restore_native_fp_fxrstor(CPUState *env) |
257 | 9df217a3 | bellard | { |
258 | 9df217a3 | bellard | struct fpxstate *fp = &fpx1;
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259 | 9df217a3 | bellard | int i, j, fptag;
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260 | 9df217a3 | bellard | |
261 | 9df217a3 | bellard | fp->fpuc = env->fpuc; |
262 | 9df217a3 | bellard | fp->fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; |
263 | 9df217a3 | bellard | fptag = 0;
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264 | 9df217a3 | bellard | for(i = 0; i < 8; i++) |
265 | 9df217a3 | bellard | fptag |= (env->fptags[i] << i); |
266 | 9df217a3 | bellard | fp->fptag = fptag ^ 0xff;
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267 | 9df217a3 | bellard | |
268 | 9df217a3 | bellard | j = env->fpstt; |
269 | 9df217a3 | bellard | for(i = 0;i < 8; i++) { |
270 | 9df217a3 | bellard | memcpy(&fp->fpregs1[i * 16], &env->fpregs[j].d, 10); |
271 | 9df217a3 | bellard | j = (j + 1) & 7; |
272 | 9df217a3 | bellard | } |
273 | 9df217a3 | bellard | if (env->cpuid_features & CPUID_SSE) {
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274 | 9df217a3 | bellard | fp->mxcsr = env->mxcsr; |
275 | 9df217a3 | bellard | /* XXX: check if DAZ is not available */
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276 | 9df217a3 | bellard | fp->mxcsr_mask = 0xffff;
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277 | 9df217a3 | bellard | memcpy(fp->xmm_regs, env->xmm_regs, 8 * 16); |
278 | 9df217a3 | bellard | } |
279 | 9df217a3 | bellard | asm volatile ("fxrstor %0" : "=m" (*fp)); |
280 | 9df217a3 | bellard | } |
281 | 9df217a3 | bellard | |
282 | 9df217a3 | bellard | static void save_native_fp_fxsave(CPUState *env) |
283 | 9df217a3 | bellard | { |
284 | 9df217a3 | bellard | struct fpxstate *fp = &fpx1;
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285 | 9df217a3 | bellard | int fptag, i, j;
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286 | 9df217a3 | bellard | uint16_t fpuc; |
287 | 9df217a3 | bellard | |
288 | 9df217a3 | bellard | asm volatile ("fxsave %0" : : "m" (*fp)); |
289 | 9df217a3 | bellard | env->fpuc = fp->fpuc; |
290 | 9df217a3 | bellard | env->fpstt = (fp->fpus >> 11) & 7; |
291 | 9df217a3 | bellard | env->fpus = fp->fpus & ~0x3800;
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292 | 9df217a3 | bellard | fptag = fp->fptag ^ 0xff;
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293 | 9df217a3 | bellard | for(i = 0;i < 8; i++) { |
294 | 9df217a3 | bellard | env->fptags[i] = (fptag >> i) & 1;
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295 | 9df217a3 | bellard | } |
296 | 9df217a3 | bellard | j = env->fpstt; |
297 | 9df217a3 | bellard | for(i = 0;i < 8; i++) { |
298 | 9df217a3 | bellard | memcpy(&env->fpregs[j].d, &fp->fpregs1[i * 16], 10); |
299 | 9df217a3 | bellard | j = (j + 1) & 7; |
300 | 9df217a3 | bellard | } |
301 | 9df217a3 | bellard | if (env->cpuid_features & CPUID_SSE) {
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302 | 9df217a3 | bellard | env->mxcsr = fp->mxcsr; |
303 | 9df217a3 | bellard | memcpy(env->xmm_regs, fp->xmm_regs, 8 * 16); |
304 | 9df217a3 | bellard | } |
305 | 9df217a3 | bellard | |
306 | 9df217a3 | bellard | /* we must restore the default rounding state */
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307 | 9df217a3 | bellard | asm volatile ("fninit"); |
308 | 9df217a3 | bellard | fpuc = 0x037f | (env->fpuc & (3 << 10)); |
309 | 9df217a3 | bellard | asm volatile("fldcw %0" : : "m" (fpuc)); |
310 | 9df217a3 | bellard | } |
311 | 9df217a3 | bellard | |
312 | 9df217a3 | bellard | int kqemu_cpu_exec(CPUState *env)
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313 | 9df217a3 | bellard | { |
314 | 9df217a3 | bellard | struct kqemu_cpu_state kcpu_state, *kenv = &kcpu_state;
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315 | 9df217a3 | bellard | int ret;
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316 | 9df217a3 | bellard | |
317 | 9df217a3 | bellard | #ifdef DEBUG
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318 | 9df217a3 | bellard | if (loglevel & CPU_LOG_INT) {
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319 | 9df217a3 | bellard | fprintf(logfile, "kqemu: cpu_exec: enter\n");
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320 | 9df217a3 | bellard | cpu_dump_state(env, logfile, fprintf, 0);
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321 | 9df217a3 | bellard | } |
322 | 9df217a3 | bellard | #endif
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323 | 9df217a3 | bellard | memcpy(kenv->regs, env->regs, sizeof(kenv->regs));
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324 | 9df217a3 | bellard | kenv->eip = env->eip; |
325 | 9df217a3 | bellard | kenv->eflags = env->eflags; |
326 | 9df217a3 | bellard | memcpy(&kenv->segs, &env->segs, sizeof(env->segs));
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327 | 9df217a3 | bellard | memcpy(&kenv->ldt, &env->ldt, sizeof(env->ldt));
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328 | 9df217a3 | bellard | memcpy(&kenv->tr, &env->tr, sizeof(env->tr));
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329 | 9df217a3 | bellard | memcpy(&kenv->gdt, &env->gdt, sizeof(env->gdt));
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330 | 9df217a3 | bellard | memcpy(&kenv->idt, &env->idt, sizeof(env->idt));
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331 | 9df217a3 | bellard | kenv->cr0 = env->cr[0];
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332 | 9df217a3 | bellard | kenv->cr2 = env->cr[2];
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333 | 9df217a3 | bellard | kenv->cr3 = env->cr[3];
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334 | 9df217a3 | bellard | kenv->cr4 = env->cr[4];
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335 | 9df217a3 | bellard | kenv->a20_mask = env->a20_mask; |
336 | 9df217a3 | bellard | if (env->dr[7] & 0xff) { |
337 | 9df217a3 | bellard | kenv->dr7 = env->dr[7];
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338 | 9df217a3 | bellard | kenv->dr0 = env->dr[0];
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339 | 9df217a3 | bellard | kenv->dr1 = env->dr[1];
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340 | 9df217a3 | bellard | kenv->dr2 = env->dr[2];
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341 | 9df217a3 | bellard | kenv->dr3 = env->dr[3];
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342 | 9df217a3 | bellard | } else {
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343 | 9df217a3 | bellard | kenv->dr7 = 0;
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344 | 9df217a3 | bellard | } |
345 | 9df217a3 | bellard | kenv->dr6 = env->dr[6];
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346 | 9df217a3 | bellard | kenv->cpl = 3;
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347 | 9df217a3 | bellard | kenv->nb_pages_to_flush = nb_pages_to_flush; |
348 | 9df217a3 | bellard | nb_pages_to_flush = 0;
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349 | 9df217a3 | bellard | |
350 | 9df217a3 | bellard | if (!(kenv->cr0 & CR0_TS_MASK)) {
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351 | 9df217a3 | bellard | if (env->cpuid_features & CPUID_FXSR)
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352 | 9df217a3 | bellard | restore_native_fp_fxrstor(env); |
353 | 9df217a3 | bellard | else
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354 | 9df217a3 | bellard | restore_native_fp_frstor(env); |
355 | 9df217a3 | bellard | } |
356 | 9df217a3 | bellard | |
357 | 9df217a3 | bellard | ret = ioctl(kqemu_fd, KQEMU_EXEC, kenv); |
358 | 9df217a3 | bellard | |
359 | 9df217a3 | bellard | if (!(kenv->cr0 & CR0_TS_MASK)) {
|
360 | 9df217a3 | bellard | if (env->cpuid_features & CPUID_FXSR)
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361 | 9df217a3 | bellard | save_native_fp_fxsave(env); |
362 | 9df217a3 | bellard | else
|
363 | 9df217a3 | bellard | save_native_fp_fsave(env); |
364 | 9df217a3 | bellard | } |
365 | 9df217a3 | bellard | |
366 | 9df217a3 | bellard | memcpy(env->regs, kenv->regs, sizeof(env->regs));
|
367 | 9df217a3 | bellard | env->eip = kenv->eip; |
368 | 9df217a3 | bellard | env->eflags = kenv->eflags; |
369 | 9df217a3 | bellard | memcpy(env->segs, kenv->segs, sizeof(env->segs));
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370 | 9df217a3 | bellard | #if 0
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371 | 9df217a3 | bellard | /* no need to restore that */
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372 | 9df217a3 | bellard | memcpy(env->ldt, kenv->ldt, sizeof(env->ldt));
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373 | 9df217a3 | bellard | memcpy(env->tr, kenv->tr, sizeof(env->tr));
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374 | 9df217a3 | bellard | memcpy(env->gdt, kenv->gdt, sizeof(env->gdt));
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375 | 9df217a3 | bellard | memcpy(env->idt, kenv->idt, sizeof(env->idt));
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376 | 9df217a3 | bellard | env->cr[0] = kenv->cr0;
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377 | 9df217a3 | bellard | env->cr[3] = kenv->cr3;
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378 | 9df217a3 | bellard | env->cr[4] = kenv->cr4;
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379 | 9df217a3 | bellard | env->a20_mask = kenv->a20_mask;
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380 | 9df217a3 | bellard | #endif
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381 | 9df217a3 | bellard | env->cr[2] = kenv->cr2;
|
382 | 9df217a3 | bellard | env->dr[6] = kenv->dr6;
|
383 | 9df217a3 | bellard | |
384 | 9df217a3 | bellard | #ifdef DEBUG
|
385 | 9df217a3 | bellard | if (loglevel & CPU_LOG_INT) {
|
386 | 9df217a3 | bellard | fprintf(logfile, "kqemu: kqemu_cpu_exec: ret=0x%x\n", ret);
|
387 | 9df217a3 | bellard | } |
388 | 9df217a3 | bellard | #endif
|
389 | 9df217a3 | bellard | if ((ret & 0xff00) == KQEMU_RET_INT) { |
390 | 9df217a3 | bellard | env->exception_index = ret & 0xff;
|
391 | 9df217a3 | bellard | env->error_code = 0;
|
392 | 9df217a3 | bellard | env->exception_is_int = 1;
|
393 | 9df217a3 | bellard | env->exception_next_eip = kenv->next_eip; |
394 | 9df217a3 | bellard | #ifdef DEBUG
|
395 | 9df217a3 | bellard | if (loglevel & CPU_LOG_INT) {
|
396 | 9df217a3 | bellard | fprintf(logfile, "kqemu: interrupt v=%02x:\n",
|
397 | 9df217a3 | bellard | env->exception_index); |
398 | 9df217a3 | bellard | cpu_dump_state(env, logfile, fprintf, 0);
|
399 | 9df217a3 | bellard | } |
400 | 9df217a3 | bellard | #endif
|
401 | 9df217a3 | bellard | return 1; |
402 | 9df217a3 | bellard | } else if ((ret & 0xff00) == KQEMU_RET_EXCEPTION) { |
403 | 9df217a3 | bellard | env->exception_index = ret & 0xff;
|
404 | 9df217a3 | bellard | env->error_code = kenv->error_code; |
405 | 9df217a3 | bellard | env->exception_is_int = 0;
|
406 | 9df217a3 | bellard | env->exception_next_eip = 0;
|
407 | 9df217a3 | bellard | #ifdef DEBUG
|
408 | 9df217a3 | bellard | if (loglevel & CPU_LOG_INT) {
|
409 | 9df217a3 | bellard | fprintf(logfile, "kqemu: exception v=%02x e=%04x:\n",
|
410 | 9df217a3 | bellard | env->exception_index, env->error_code); |
411 | 9df217a3 | bellard | cpu_dump_state(env, logfile, fprintf, 0);
|
412 | 9df217a3 | bellard | } |
413 | 9df217a3 | bellard | #endif
|
414 | 9df217a3 | bellard | return 1; |
415 | 9df217a3 | bellard | } else if (ret == KQEMU_RET_INTR) { |
416 | 9df217a3 | bellard | return 0; |
417 | 9df217a3 | bellard | } else if (ret == KQEMU_RET_SOFTMMU) { |
418 | 9df217a3 | bellard | return 2; |
419 | 9df217a3 | bellard | } else {
|
420 | 9df217a3 | bellard | cpu_dump_state(env, stderr, fprintf, 0);
|
421 | 9df217a3 | bellard | fprintf(stderr, "Unsupported return value: 0x%x\n", ret);
|
422 | 9df217a3 | bellard | exit(1);
|
423 | 9df217a3 | bellard | } |
424 | 9df217a3 | bellard | return 0; |
425 | 9df217a3 | bellard | } |
426 | 9df217a3 | bellard | |
427 | 9df217a3 | bellard | #endif |