Max Filippov | 1ddeaa5 | 2011-09-06 03:55:47 +0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2011, Max Filippov, Open Source and Linux Lab. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions are met: |
| 7 | * * Redistributions of source code must retain the above copyright |
| 8 | * notice, this list of conditions and the following disclaimer. |
| 9 | * * Redistributions in binary form must reproduce the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer in the |
| 11 | * documentation and/or other materials provided with the distribution. |
| 12 | * * Neither the name of the Open Source and Linux Lab nor the |
| 13 | * names of its contributors may be used to endorse or promote products |
| 14 | * derived from this software without specific prior written permission. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| 20 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 21 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 22 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 23 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 25 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 26 | */ |
| 27 | |
| 28 | #include <errno.h> |
| 29 | #include <unistd.h> |
| 30 | #include <string.h> |
| 31 | #include <stddef.h> |
| 32 | #include "cpu.h" |
Lluís Vilanova | 16c1dea | 2012-02-13 16:33:58 +0100 | [diff] [blame] | 33 | #include "helper.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 34 | #include "qemu/log.h" |
Max Filippov | 1ddeaa5 | 2011-09-06 03:55:47 +0400 | [diff] [blame] | 35 | |
| 36 | enum { |
| 37 | TARGET_SYS_exit = 1, |
| 38 | TARGET_SYS_read = 3, |
| 39 | TARGET_SYS_write = 4, |
| 40 | TARGET_SYS_open = 5, |
| 41 | TARGET_SYS_close = 6, |
| 42 | TARGET_SYS_lseek = 19, |
| 43 | TARGET_SYS_select_one = 29, |
| 44 | |
| 45 | TARGET_SYS_argc = 1000, |
| 46 | TARGET_SYS_argv_sz = 1001, |
| 47 | TARGET_SYS_argv = 1002, |
| 48 | TARGET_SYS_memset = 1004, |
| 49 | }; |
| 50 | |
| 51 | enum { |
| 52 | SELECT_ONE_READ = 1, |
| 53 | SELECT_ONE_WRITE = 2, |
| 54 | SELECT_ONE_EXCEPT = 3, |
| 55 | }; |
| 56 | |
Max Filippov | d6ce52c | 2012-08-29 23:54:25 +0400 | [diff] [blame] | 57 | enum { |
| 58 | TARGET_EPERM = 1, |
| 59 | TARGET_ENOENT = 2, |
| 60 | TARGET_ESRCH = 3, |
| 61 | TARGET_EINTR = 4, |
| 62 | TARGET_EIO = 5, |
| 63 | TARGET_ENXIO = 6, |
| 64 | TARGET_E2BIG = 7, |
| 65 | TARGET_ENOEXEC = 8, |
| 66 | TARGET_EBADF = 9, |
| 67 | TARGET_ECHILD = 10, |
| 68 | TARGET_EAGAIN = 11, |
| 69 | TARGET_ENOMEM = 12, |
| 70 | TARGET_EACCES = 13, |
| 71 | TARGET_EFAULT = 14, |
| 72 | TARGET_ENOTBLK = 15, |
| 73 | TARGET_EBUSY = 16, |
| 74 | TARGET_EEXIST = 17, |
| 75 | TARGET_EXDEV = 18, |
| 76 | TARGET_ENODEV = 19, |
| 77 | TARGET_ENOTDIR = 20, |
| 78 | TARGET_EISDIR = 21, |
| 79 | TARGET_EINVAL = 22, |
| 80 | TARGET_ENFILE = 23, |
| 81 | TARGET_EMFILE = 24, |
| 82 | TARGET_ENOTTY = 25, |
| 83 | TARGET_ETXTBSY = 26, |
| 84 | TARGET_EFBIG = 27, |
| 85 | TARGET_ENOSPC = 28, |
| 86 | TARGET_ESPIPE = 29, |
| 87 | TARGET_EROFS = 30, |
| 88 | TARGET_EMLINK = 31, |
| 89 | TARGET_EPIPE = 32, |
| 90 | TARGET_EDOM = 33, |
| 91 | TARGET_ERANGE = 34, |
| 92 | TARGET_ENOSYS = 88, |
| 93 | TARGET_ELOOP = 92, |
| 94 | }; |
| 95 | |
| 96 | static uint32_t errno_h2g(int host_errno) |
| 97 | { |
| 98 | static const uint32_t guest_errno[] = { |
| 99 | [EPERM] = TARGET_EPERM, |
| 100 | [ENOENT] = TARGET_ENOENT, |
| 101 | [ESRCH] = TARGET_ESRCH, |
| 102 | [EINTR] = TARGET_EINTR, |
| 103 | [EIO] = TARGET_EIO, |
| 104 | [ENXIO] = TARGET_ENXIO, |
| 105 | [E2BIG] = TARGET_E2BIG, |
| 106 | [ENOEXEC] = TARGET_ENOEXEC, |
| 107 | [EBADF] = TARGET_EBADF, |
| 108 | [ECHILD] = TARGET_ECHILD, |
| 109 | [EAGAIN] = TARGET_EAGAIN, |
| 110 | [ENOMEM] = TARGET_ENOMEM, |
| 111 | [EACCES] = TARGET_EACCES, |
| 112 | [EFAULT] = TARGET_EFAULT, |
Max Filippov | c29b1be | 2012-09-06 04:36:46 +0400 | [diff] [blame] | 113 | #ifdef ENOTBLK |
Max Filippov | d6ce52c | 2012-08-29 23:54:25 +0400 | [diff] [blame] | 114 | [ENOTBLK] = TARGET_ENOTBLK, |
Max Filippov | c29b1be | 2012-09-06 04:36:46 +0400 | [diff] [blame] | 115 | #endif |
Max Filippov | d6ce52c | 2012-08-29 23:54:25 +0400 | [diff] [blame] | 116 | [EBUSY] = TARGET_EBUSY, |
| 117 | [EEXIST] = TARGET_EEXIST, |
| 118 | [EXDEV] = TARGET_EXDEV, |
| 119 | [ENODEV] = TARGET_ENODEV, |
| 120 | [ENOTDIR] = TARGET_ENOTDIR, |
| 121 | [EISDIR] = TARGET_EISDIR, |
| 122 | [EINVAL] = TARGET_EINVAL, |
| 123 | [ENFILE] = TARGET_ENFILE, |
| 124 | [EMFILE] = TARGET_EMFILE, |
| 125 | [ENOTTY] = TARGET_ENOTTY, |
Max Filippov | c29b1be | 2012-09-06 04:36:46 +0400 | [diff] [blame] | 126 | #ifdef ETXTBSY |
Max Filippov | d6ce52c | 2012-08-29 23:54:25 +0400 | [diff] [blame] | 127 | [ETXTBSY] = TARGET_ETXTBSY, |
Max Filippov | c29b1be | 2012-09-06 04:36:46 +0400 | [diff] [blame] | 128 | #endif |
Max Filippov | d6ce52c | 2012-08-29 23:54:25 +0400 | [diff] [blame] | 129 | [EFBIG] = TARGET_EFBIG, |
| 130 | [ENOSPC] = TARGET_ENOSPC, |
| 131 | [ESPIPE] = TARGET_ESPIPE, |
| 132 | [EROFS] = TARGET_EROFS, |
| 133 | [EMLINK] = TARGET_EMLINK, |
| 134 | [EPIPE] = TARGET_EPIPE, |
| 135 | [EDOM] = TARGET_EDOM, |
| 136 | [ERANGE] = TARGET_ERANGE, |
| 137 | [ENOSYS] = TARGET_ENOSYS, |
Max Filippov | c29b1be | 2012-09-06 04:36:46 +0400 | [diff] [blame] | 138 | #ifdef ELOOP |
Max Filippov | d6ce52c | 2012-08-29 23:54:25 +0400 | [diff] [blame] | 139 | [ELOOP] = TARGET_ELOOP, |
Max Filippov | c29b1be | 2012-09-06 04:36:46 +0400 | [diff] [blame] | 140 | #endif |
Max Filippov | d6ce52c | 2012-08-29 23:54:25 +0400 | [diff] [blame] | 141 | }; |
| 142 | |
| 143 | if (host_errno == 0) { |
| 144 | return 0; |
| 145 | } else if (host_errno > 0 && host_errno < ARRAY_SIZE(guest_errno) && |
| 146 | guest_errno[host_errno]) { |
| 147 | return guest_errno[host_errno]; |
| 148 | } else { |
| 149 | return TARGET_EINVAL; |
| 150 | } |
| 151 | } |
| 152 | |
Andreas Färber | d4a5b62 | 2012-03-14 01:38:23 +0100 | [diff] [blame] | 153 | void HELPER(simcall)(CPUXtensaState *env) |
Max Filippov | 1ddeaa5 | 2011-09-06 03:55:47 +0400 | [diff] [blame] | 154 | { |
| 155 | uint32_t *regs = env->regs; |
| 156 | |
| 157 | switch (regs[2]) { |
| 158 | case TARGET_SYS_exit: |
| 159 | qemu_log("exit(%d) simcall\n", regs[3]); |
| 160 | exit(regs[3]); |
| 161 | break; |
| 162 | |
| 163 | case TARGET_SYS_read: |
| 164 | case TARGET_SYS_write: |
| 165 | { |
| 166 | bool is_write = regs[2] == TARGET_SYS_write; |
| 167 | uint32_t fd = regs[3]; |
| 168 | uint32_t vaddr = regs[4]; |
| 169 | uint32_t len = regs[5]; |
| 170 | |
| 171 | while (len > 0) { |
Avi Kivity | a8170e5 | 2012-10-23 12:30:10 +0200 | [diff] [blame] | 172 | hwaddr paddr = |
Max Filippov | 1ddeaa5 | 2011-09-06 03:55:47 +0400 | [diff] [blame] | 173 | cpu_get_phys_page_debug(env, vaddr); |
| 174 | uint32_t page_left = |
| 175 | TARGET_PAGE_SIZE - (vaddr & (TARGET_PAGE_SIZE - 1)); |
| 176 | uint32_t io_sz = page_left < len ? page_left : len; |
Avi Kivity | a8170e5 | 2012-10-23 12:30:10 +0200 | [diff] [blame] | 177 | hwaddr sz = io_sz; |
Max Filippov | 1ddeaa5 | 2011-09-06 03:55:47 +0400 | [diff] [blame] | 178 | void *buf = cpu_physical_memory_map(paddr, &sz, is_write); |
| 179 | |
| 180 | if (buf) { |
| 181 | vaddr += io_sz; |
| 182 | len -= io_sz; |
| 183 | regs[2] = is_write ? |
| 184 | write(fd, buf, io_sz) : |
| 185 | read(fd, buf, io_sz); |
Max Filippov | d6ce52c | 2012-08-29 23:54:25 +0400 | [diff] [blame] | 186 | regs[3] = errno_h2g(errno); |
Max Filippov | 1ddeaa5 | 2011-09-06 03:55:47 +0400 | [diff] [blame] | 187 | cpu_physical_memory_unmap(buf, sz, is_write, sz); |
| 188 | if (regs[2] == -1) { |
| 189 | break; |
| 190 | } |
| 191 | } else { |
| 192 | regs[2] = -1; |
Max Filippov | d6ce52c | 2012-08-29 23:54:25 +0400 | [diff] [blame] | 193 | regs[3] = TARGET_EINVAL; |
Max Filippov | 1ddeaa5 | 2011-09-06 03:55:47 +0400 | [diff] [blame] | 194 | break; |
| 195 | } |
| 196 | } |
| 197 | } |
| 198 | break; |
| 199 | |
| 200 | case TARGET_SYS_open: |
| 201 | { |
| 202 | char name[1024]; |
| 203 | int rc; |
| 204 | int i; |
| 205 | |
| 206 | for (i = 0; i < ARRAY_SIZE(name); ++i) { |
| 207 | rc = cpu_memory_rw_debug( |
| 208 | env, regs[3] + i, (uint8_t *)name + i, 1, 0); |
| 209 | if (rc != 0 || name[i] == 0) { |
| 210 | break; |
| 211 | } |
| 212 | } |
| 213 | |
| 214 | if (rc == 0 && i < ARRAY_SIZE(name)) { |
| 215 | regs[2] = open(name, regs[4], regs[5]); |
Max Filippov | d6ce52c | 2012-08-29 23:54:25 +0400 | [diff] [blame] | 216 | regs[3] = errno_h2g(errno); |
Max Filippov | 1ddeaa5 | 2011-09-06 03:55:47 +0400 | [diff] [blame] | 217 | } else { |
| 218 | regs[2] = -1; |
Max Filippov | d6ce52c | 2012-08-29 23:54:25 +0400 | [diff] [blame] | 219 | regs[3] = TARGET_EINVAL; |
Max Filippov | 1ddeaa5 | 2011-09-06 03:55:47 +0400 | [diff] [blame] | 220 | } |
| 221 | } |
| 222 | break; |
| 223 | |
| 224 | case TARGET_SYS_close: |
| 225 | if (regs[3] < 3) { |
| 226 | regs[2] = regs[3] = 0; |
| 227 | } else { |
| 228 | regs[2] = close(regs[3]); |
Max Filippov | d6ce52c | 2012-08-29 23:54:25 +0400 | [diff] [blame] | 229 | regs[3] = errno_h2g(errno); |
Max Filippov | 1ddeaa5 | 2011-09-06 03:55:47 +0400 | [diff] [blame] | 230 | } |
| 231 | break; |
| 232 | |
| 233 | case TARGET_SYS_lseek: |
| 234 | regs[2] = lseek(regs[3], (off_t)(int32_t)regs[4], regs[5]); |
Max Filippov | d6ce52c | 2012-08-29 23:54:25 +0400 | [diff] [blame] | 235 | regs[3] = errno_h2g(errno); |
Max Filippov | 1ddeaa5 | 2011-09-06 03:55:47 +0400 | [diff] [blame] | 236 | break; |
| 237 | |
| 238 | case TARGET_SYS_select_one: |
| 239 | { |
| 240 | uint32_t fd = regs[3]; |
| 241 | uint32_t rq = regs[4]; |
| 242 | uint32_t target_tv = regs[5]; |
| 243 | uint32_t target_tvv[2]; |
| 244 | |
| 245 | struct timeval tv = {0}; |
| 246 | fd_set fdset; |
| 247 | |
| 248 | FD_ZERO(&fdset); |
| 249 | FD_SET(fd, &fdset); |
| 250 | |
| 251 | if (target_tv) { |
| 252 | cpu_memory_rw_debug(env, target_tv, |
| 253 | (uint8_t *)target_tvv, sizeof(target_tvv), 0); |
| 254 | tv.tv_sec = (int32_t)tswap32(target_tvv[0]); |
| 255 | tv.tv_usec = (int32_t)tswap32(target_tvv[1]); |
| 256 | } |
| 257 | regs[2] = select(fd + 1, |
| 258 | rq == SELECT_ONE_READ ? &fdset : NULL, |
| 259 | rq == SELECT_ONE_WRITE ? &fdset : NULL, |
| 260 | rq == SELECT_ONE_EXCEPT ? &fdset : NULL, |
| 261 | target_tv ? &tv : NULL); |
Max Filippov | d6ce52c | 2012-08-29 23:54:25 +0400 | [diff] [blame] | 262 | regs[3] = errno_h2g(errno); |
Max Filippov | 1ddeaa5 | 2011-09-06 03:55:47 +0400 | [diff] [blame] | 263 | } |
| 264 | break; |
| 265 | |
| 266 | case TARGET_SYS_argc: |
| 267 | regs[2] = 1; |
| 268 | regs[3] = 0; |
| 269 | break; |
| 270 | |
| 271 | case TARGET_SYS_argv_sz: |
| 272 | regs[2] = 128; |
| 273 | regs[3] = 0; |
| 274 | break; |
| 275 | |
| 276 | case TARGET_SYS_argv: |
| 277 | { |
| 278 | struct Argv { |
| 279 | uint32_t argptr[2]; |
| 280 | char text[120]; |
| 281 | } argv = { |
| 282 | {0, 0}, |
| 283 | "test" |
| 284 | }; |
| 285 | |
| 286 | argv.argptr[0] = tswap32(regs[3] + offsetof(struct Argv, text)); |
| 287 | cpu_memory_rw_debug( |
| 288 | env, regs[3], (uint8_t *)&argv, sizeof(argv), 1); |
| 289 | } |
| 290 | break; |
| 291 | |
| 292 | case TARGET_SYS_memset: |
| 293 | { |
| 294 | uint32_t base = regs[3]; |
| 295 | uint32_t sz = regs[5]; |
| 296 | |
| 297 | while (sz) { |
Avi Kivity | a8170e5 | 2012-10-23 12:30:10 +0200 | [diff] [blame] | 298 | hwaddr len = sz; |
Max Filippov | 1ddeaa5 | 2011-09-06 03:55:47 +0400 | [diff] [blame] | 299 | void *buf = cpu_physical_memory_map(base, &len, 1); |
| 300 | |
| 301 | if (buf && len) { |
| 302 | memset(buf, regs[4], len); |
| 303 | cpu_physical_memory_unmap(buf, len, 1, len); |
| 304 | } else { |
| 305 | len = 1; |
| 306 | } |
| 307 | base += len; |
| 308 | sz -= len; |
| 309 | } |
| 310 | regs[2] = regs[3]; |
| 311 | regs[3] = 0; |
| 312 | } |
| 313 | break; |
| 314 | |
| 315 | default: |
| 316 | qemu_log("%s(%d): not implemented\n", __func__, regs[2]); |
Max Filippov | e7eee62 | 2012-08-22 22:03:35 +0400 | [diff] [blame] | 317 | regs[2] = -1; |
Max Filippov | d6ce52c | 2012-08-29 23:54:25 +0400 | [diff] [blame] | 318 | regs[3] = TARGET_ENOSYS; |
Max Filippov | 1ddeaa5 | 2011-09-06 03:55:47 +0400 | [diff] [blame] | 319 | break; |
| 320 | } |
| 321 | } |