1fcf5ef2aSThomas Huth /* 2fcf5ef2aSThomas Huth * m68k/ColdFire Semihosting syscall interface 3fcf5ef2aSThomas Huth * 4fcf5ef2aSThomas Huth * Copyright (c) 2005-2007 CodeSourcery. 5fcf5ef2aSThomas Huth * 6fcf5ef2aSThomas Huth * This program is free software; you can redistribute it and/or modify 7fcf5ef2aSThomas Huth * it under the terms of the GNU General Public License as published by 8fcf5ef2aSThomas Huth * the Free Software Foundation; either version 2 of the License, or 9fcf5ef2aSThomas Huth * (at your option) any later version. 10fcf5ef2aSThomas Huth * 11fcf5ef2aSThomas Huth * This program is distributed in the hope that it will be useful, 12fcf5ef2aSThomas Huth * but WITHOUT ANY WARRANTY; without even the implied warranty of 13fcf5ef2aSThomas Huth * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14fcf5ef2aSThomas Huth * GNU General Public License for more details. 15fcf5ef2aSThomas Huth * 16fcf5ef2aSThomas Huth * You should have received a copy of the GNU General Public License 17fcf5ef2aSThomas Huth * along with this program; if not, see <http://www.gnu.org/licenses/>. 18fcf5ef2aSThomas Huth */ 19fcf5ef2aSThomas Huth 20fcf5ef2aSThomas Huth #include "qemu/osdep.h" 21fcf5ef2aSThomas Huth 22fcf5ef2aSThomas Huth #include "cpu.h" 23fcf5ef2aSThomas Huth #if defined(CONFIG_USER_ONLY) 24fcf5ef2aSThomas Huth #include "qemu.h" 25fcf5ef2aSThomas Huth #define SEMIHOSTING_HEAP_SIZE (128 * 1024 * 1024) 26fcf5ef2aSThomas Huth #else 27fcf5ef2aSThomas Huth #include "exec/gdbstub.h" 28fcf5ef2aSThomas Huth #include "exec/softmmu-semi.h" 29fcf5ef2aSThomas Huth #endif 30fcf5ef2aSThomas Huth #include "qemu/log.h" 31fcf5ef2aSThomas Huth #include "sysemu/sysemu.h" 32fcf5ef2aSThomas Huth 33fcf5ef2aSThomas Huth #define HOSTED_EXIT 0 34fcf5ef2aSThomas Huth #define HOSTED_INIT_SIM 1 35fcf5ef2aSThomas Huth #define HOSTED_OPEN 2 36fcf5ef2aSThomas Huth #define HOSTED_CLOSE 3 37fcf5ef2aSThomas Huth #define HOSTED_READ 4 38fcf5ef2aSThomas Huth #define HOSTED_WRITE 5 39fcf5ef2aSThomas Huth #define HOSTED_LSEEK 6 40fcf5ef2aSThomas Huth #define HOSTED_RENAME 7 41fcf5ef2aSThomas Huth #define HOSTED_UNLINK 8 42fcf5ef2aSThomas Huth #define HOSTED_STAT 9 43fcf5ef2aSThomas Huth #define HOSTED_FSTAT 10 44fcf5ef2aSThomas Huth #define HOSTED_GETTIMEOFDAY 11 45fcf5ef2aSThomas Huth #define HOSTED_ISATTY 12 46fcf5ef2aSThomas Huth #define HOSTED_SYSTEM 13 47fcf5ef2aSThomas Huth 48fcf5ef2aSThomas Huth typedef uint32_t gdb_mode_t; 49fcf5ef2aSThomas Huth typedef uint32_t gdb_time_t; 50fcf5ef2aSThomas Huth 51fcf5ef2aSThomas Huth struct m68k_gdb_stat { 52fcf5ef2aSThomas Huth uint32_t gdb_st_dev; /* device */ 53fcf5ef2aSThomas Huth uint32_t gdb_st_ino; /* inode */ 54fcf5ef2aSThomas Huth gdb_mode_t gdb_st_mode; /* protection */ 55fcf5ef2aSThomas Huth uint32_t gdb_st_nlink; /* number of hard links */ 56fcf5ef2aSThomas Huth uint32_t gdb_st_uid; /* user ID of owner */ 57fcf5ef2aSThomas Huth uint32_t gdb_st_gid; /* group ID of owner */ 58fcf5ef2aSThomas Huth uint32_t gdb_st_rdev; /* device type (if inode device) */ 59fcf5ef2aSThomas Huth uint64_t gdb_st_size; /* total size, in bytes */ 60fcf5ef2aSThomas Huth uint64_t gdb_st_blksize; /* blocksize for filesystem I/O */ 61fcf5ef2aSThomas Huth uint64_t gdb_st_blocks; /* number of blocks allocated */ 62fcf5ef2aSThomas Huth gdb_time_t gdb_st_atime; /* time of last access */ 63fcf5ef2aSThomas Huth gdb_time_t gdb_st_mtime; /* time of last modification */ 64fcf5ef2aSThomas Huth gdb_time_t gdb_st_ctime; /* time of last change */ 65fcf5ef2aSThomas Huth } QEMU_PACKED; 66fcf5ef2aSThomas Huth 67fcf5ef2aSThomas Huth struct gdb_timeval { 68fcf5ef2aSThomas Huth gdb_time_t tv_sec; /* second */ 69fcf5ef2aSThomas Huth uint64_t tv_usec; /* microsecond */ 70fcf5ef2aSThomas Huth } QEMU_PACKED; 71fcf5ef2aSThomas Huth 72fcf5ef2aSThomas Huth #define GDB_O_RDONLY 0x0 73fcf5ef2aSThomas Huth #define GDB_O_WRONLY 0x1 74fcf5ef2aSThomas Huth #define GDB_O_RDWR 0x2 75fcf5ef2aSThomas Huth #define GDB_O_APPEND 0x8 76fcf5ef2aSThomas Huth #define GDB_O_CREAT 0x200 77fcf5ef2aSThomas Huth #define GDB_O_TRUNC 0x400 78fcf5ef2aSThomas Huth #define GDB_O_EXCL 0x800 79fcf5ef2aSThomas Huth 80fcf5ef2aSThomas Huth static int translate_openflags(int flags) 81fcf5ef2aSThomas Huth { 82fcf5ef2aSThomas Huth int hf; 83fcf5ef2aSThomas Huth 84fcf5ef2aSThomas Huth if (flags & GDB_O_WRONLY) 85fcf5ef2aSThomas Huth hf = O_WRONLY; 86fcf5ef2aSThomas Huth else if (flags & GDB_O_RDWR) 87fcf5ef2aSThomas Huth hf = O_RDWR; 88fcf5ef2aSThomas Huth else 89fcf5ef2aSThomas Huth hf = O_RDONLY; 90fcf5ef2aSThomas Huth 91fcf5ef2aSThomas Huth if (flags & GDB_O_APPEND) hf |= O_APPEND; 92fcf5ef2aSThomas Huth if (flags & GDB_O_CREAT) hf |= O_CREAT; 93fcf5ef2aSThomas Huth if (flags & GDB_O_TRUNC) hf |= O_TRUNC; 94fcf5ef2aSThomas Huth if (flags & GDB_O_EXCL) hf |= O_EXCL; 95fcf5ef2aSThomas Huth 96fcf5ef2aSThomas Huth return hf; 97fcf5ef2aSThomas Huth } 98fcf5ef2aSThomas Huth 99fcf5ef2aSThomas Huth static void translate_stat(CPUM68KState *env, target_ulong addr, struct stat *s) 100fcf5ef2aSThomas Huth { 101fcf5ef2aSThomas Huth struct m68k_gdb_stat *p; 102fcf5ef2aSThomas Huth 103fcf5ef2aSThomas Huth if (!(p = lock_user(VERIFY_WRITE, addr, sizeof(struct m68k_gdb_stat), 0))) 104fcf5ef2aSThomas Huth /* FIXME - should this return an error code? */ 105fcf5ef2aSThomas Huth return; 106fcf5ef2aSThomas Huth p->gdb_st_dev = cpu_to_be32(s->st_dev); 107fcf5ef2aSThomas Huth p->gdb_st_ino = cpu_to_be32(s->st_ino); 108fcf5ef2aSThomas Huth p->gdb_st_mode = cpu_to_be32(s->st_mode); 109fcf5ef2aSThomas Huth p->gdb_st_nlink = cpu_to_be32(s->st_nlink); 110fcf5ef2aSThomas Huth p->gdb_st_uid = cpu_to_be32(s->st_uid); 111fcf5ef2aSThomas Huth p->gdb_st_gid = cpu_to_be32(s->st_gid); 112fcf5ef2aSThomas Huth p->gdb_st_rdev = cpu_to_be32(s->st_rdev); 113fcf5ef2aSThomas Huth p->gdb_st_size = cpu_to_be64(s->st_size); 114fcf5ef2aSThomas Huth #ifdef _WIN32 115fcf5ef2aSThomas Huth /* Windows stat is missing some fields. */ 116fcf5ef2aSThomas Huth p->gdb_st_blksize = 0; 117fcf5ef2aSThomas Huth p->gdb_st_blocks = 0; 118fcf5ef2aSThomas Huth #else 119fcf5ef2aSThomas Huth p->gdb_st_blksize = cpu_to_be64(s->st_blksize); 120fcf5ef2aSThomas Huth p->gdb_st_blocks = cpu_to_be64(s->st_blocks); 121fcf5ef2aSThomas Huth #endif 122fcf5ef2aSThomas Huth p->gdb_st_atime = cpu_to_be32(s->st_atime); 123fcf5ef2aSThomas Huth p->gdb_st_mtime = cpu_to_be32(s->st_mtime); 124fcf5ef2aSThomas Huth p->gdb_st_ctime = cpu_to_be32(s->st_ctime); 125fcf5ef2aSThomas Huth unlock_user(p, addr, sizeof(struct m68k_gdb_stat)); 126fcf5ef2aSThomas Huth } 127fcf5ef2aSThomas Huth 128fcf5ef2aSThomas Huth static void m68k_semi_return_u32(CPUM68KState *env, uint32_t ret, uint32_t err) 129fcf5ef2aSThomas Huth { 130fcf5ef2aSThomas Huth target_ulong args = env->dregs[1]; 131fcf5ef2aSThomas Huth if (put_user_u32(ret, args) || 132fcf5ef2aSThomas Huth put_user_u32(err, args + 4)) { 133*808d77bcSLucien Murray-Pitts /* 134*808d77bcSLucien Murray-Pitts * The m68k semihosting ABI does not provide any way to report this 135fcf5ef2aSThomas Huth * error to the guest, so the best we can do is log it in qemu. 136fcf5ef2aSThomas Huth * It is always a guest error not to pass us a valid argument block. 137fcf5ef2aSThomas Huth */ 138fcf5ef2aSThomas Huth qemu_log_mask(LOG_GUEST_ERROR, "m68k-semihosting: return value " 139fcf5ef2aSThomas Huth "discarded because argument block not writable\n"); 140fcf5ef2aSThomas Huth } 141fcf5ef2aSThomas Huth } 142fcf5ef2aSThomas Huth 143fcf5ef2aSThomas Huth static void m68k_semi_return_u64(CPUM68KState *env, uint64_t ret, uint32_t err) 144fcf5ef2aSThomas Huth { 145fcf5ef2aSThomas Huth target_ulong args = env->dregs[1]; 146fcf5ef2aSThomas Huth if (put_user_u32(ret >> 32, args) || 147fcf5ef2aSThomas Huth put_user_u32(ret, args + 4) || 148fcf5ef2aSThomas Huth put_user_u32(err, args + 8)) { 149fcf5ef2aSThomas Huth /* No way to report this via m68k semihosting ABI; just log it */ 150fcf5ef2aSThomas Huth qemu_log_mask(LOG_GUEST_ERROR, "m68k-semihosting: return value " 151fcf5ef2aSThomas Huth "discarded because argument block not writable\n"); 152fcf5ef2aSThomas Huth } 153fcf5ef2aSThomas Huth } 154fcf5ef2aSThomas Huth 155fcf5ef2aSThomas Huth static int m68k_semi_is_fseek; 156fcf5ef2aSThomas Huth 157fcf5ef2aSThomas Huth static void m68k_semi_cb(CPUState *cs, target_ulong ret, target_ulong err) 158fcf5ef2aSThomas Huth { 159fcf5ef2aSThomas Huth M68kCPU *cpu = M68K_CPU(cs); 160fcf5ef2aSThomas Huth CPUM68KState *env = &cpu->env; 161fcf5ef2aSThomas Huth 162fcf5ef2aSThomas Huth if (m68k_semi_is_fseek) { 163*808d77bcSLucien Murray-Pitts /* 164*808d77bcSLucien Murray-Pitts * FIXME: We've already lost the high bits of the fseek 165*808d77bcSLucien Murray-Pitts * return value. 166*808d77bcSLucien Murray-Pitts */ 167fcf5ef2aSThomas Huth m68k_semi_return_u64(env, ret, err); 168fcf5ef2aSThomas Huth m68k_semi_is_fseek = 0; 169fcf5ef2aSThomas Huth } else { 170fcf5ef2aSThomas Huth m68k_semi_return_u32(env, ret, err); 171fcf5ef2aSThomas Huth } 172fcf5ef2aSThomas Huth } 173fcf5ef2aSThomas Huth 174*808d77bcSLucien Murray-Pitts /* 175*808d77bcSLucien Murray-Pitts * Read the input value from the argument block; fail the semihosting 176fcf5ef2aSThomas Huth * call if the memory read fails. 177fcf5ef2aSThomas Huth */ 178fcf5ef2aSThomas Huth #define GET_ARG(n) do { \ 179fcf5ef2aSThomas Huth if (get_user_ual(arg ## n, args + (n) * 4)) { \ 180fcf5ef2aSThomas Huth result = -1; \ 181fcf5ef2aSThomas Huth errno = EFAULT; \ 182fcf5ef2aSThomas Huth goto failed; \ 183fcf5ef2aSThomas Huth } \ 184fcf5ef2aSThomas Huth } while (0) 185fcf5ef2aSThomas Huth 186fcf5ef2aSThomas Huth void do_m68k_semihosting(CPUM68KState *env, int nr) 187fcf5ef2aSThomas Huth { 188fcf5ef2aSThomas Huth uint32_t args; 189fcf5ef2aSThomas Huth target_ulong arg0, arg1, arg2, arg3; 190fcf5ef2aSThomas Huth void *p; 191fcf5ef2aSThomas Huth void *q; 192fcf5ef2aSThomas Huth uint32_t len; 193fcf5ef2aSThomas Huth uint32_t result; 194fcf5ef2aSThomas Huth 195fcf5ef2aSThomas Huth args = env->dregs[1]; 196fcf5ef2aSThomas Huth switch (nr) { 197fcf5ef2aSThomas Huth case HOSTED_EXIT: 198fcf5ef2aSThomas Huth gdb_exit(env, env->dregs[0]); 199fcf5ef2aSThomas Huth exit(env->dregs[0]); 200fcf5ef2aSThomas Huth case HOSTED_OPEN: 201fcf5ef2aSThomas Huth GET_ARG(0); 202fcf5ef2aSThomas Huth GET_ARG(1); 203fcf5ef2aSThomas Huth GET_ARG(2); 204fcf5ef2aSThomas Huth GET_ARG(3); 205fcf5ef2aSThomas Huth if (use_gdb_syscalls()) { 206fcf5ef2aSThomas Huth gdb_do_syscall(m68k_semi_cb, "open,%s,%x,%x", arg0, (int)arg1, 207fcf5ef2aSThomas Huth arg2, arg3); 208fcf5ef2aSThomas Huth return; 209fcf5ef2aSThomas Huth } else { 210fcf5ef2aSThomas Huth p = lock_user_string(arg0); 211fcf5ef2aSThomas Huth if (!p) { 212fcf5ef2aSThomas Huth /* FIXME - check error code? */ 213fcf5ef2aSThomas Huth result = -1; 214fcf5ef2aSThomas Huth } else { 215fcf5ef2aSThomas Huth result = open(p, translate_openflags(arg2), arg3); 216fcf5ef2aSThomas Huth unlock_user(p, arg0, 0); 217fcf5ef2aSThomas Huth } 218fcf5ef2aSThomas Huth } 219fcf5ef2aSThomas Huth break; 220fcf5ef2aSThomas Huth case HOSTED_CLOSE: 221fcf5ef2aSThomas Huth { 222fcf5ef2aSThomas Huth /* Ignore attempts to close stdin/out/err. */ 223fcf5ef2aSThomas Huth GET_ARG(0); 224fcf5ef2aSThomas Huth int fd = arg0; 225fcf5ef2aSThomas Huth if (fd > 2) { 226fcf5ef2aSThomas Huth if (use_gdb_syscalls()) { 227fcf5ef2aSThomas Huth gdb_do_syscall(m68k_semi_cb, "close,%x", arg0); 228fcf5ef2aSThomas Huth return; 229fcf5ef2aSThomas Huth } else { 230fcf5ef2aSThomas Huth result = close(fd); 231fcf5ef2aSThomas Huth } 232fcf5ef2aSThomas Huth } else { 233fcf5ef2aSThomas Huth result = 0; 234fcf5ef2aSThomas Huth } 235fcf5ef2aSThomas Huth break; 236fcf5ef2aSThomas Huth } 237fcf5ef2aSThomas Huth case HOSTED_READ: 238fcf5ef2aSThomas Huth GET_ARG(0); 239fcf5ef2aSThomas Huth GET_ARG(1); 240fcf5ef2aSThomas Huth GET_ARG(2); 241fcf5ef2aSThomas Huth len = arg2; 242fcf5ef2aSThomas Huth if (use_gdb_syscalls()) { 243fcf5ef2aSThomas Huth gdb_do_syscall(m68k_semi_cb, "read,%x,%x,%x", 244fcf5ef2aSThomas Huth arg0, arg1, len); 245fcf5ef2aSThomas Huth return; 246fcf5ef2aSThomas Huth } else { 247fcf5ef2aSThomas Huth p = lock_user(VERIFY_WRITE, arg1, len, 0); 248fcf5ef2aSThomas Huth if (!p) { 249fcf5ef2aSThomas Huth /* FIXME - check error code? */ 250fcf5ef2aSThomas Huth result = -1; 251fcf5ef2aSThomas Huth } else { 252fcf5ef2aSThomas Huth result = read(arg0, p, len); 253fcf5ef2aSThomas Huth unlock_user(p, arg1, len); 254fcf5ef2aSThomas Huth } 255fcf5ef2aSThomas Huth } 256fcf5ef2aSThomas Huth break; 257fcf5ef2aSThomas Huth case HOSTED_WRITE: 258fcf5ef2aSThomas Huth GET_ARG(0); 259fcf5ef2aSThomas Huth GET_ARG(1); 260fcf5ef2aSThomas Huth GET_ARG(2); 261fcf5ef2aSThomas Huth len = arg2; 262fcf5ef2aSThomas Huth if (use_gdb_syscalls()) { 263fcf5ef2aSThomas Huth gdb_do_syscall(m68k_semi_cb, "write,%x,%x,%x", 264fcf5ef2aSThomas Huth arg0, arg1, len); 265fcf5ef2aSThomas Huth return; 266fcf5ef2aSThomas Huth } else { 267fcf5ef2aSThomas Huth p = lock_user(VERIFY_READ, arg1, len, 1); 268fcf5ef2aSThomas Huth if (!p) { 269fcf5ef2aSThomas Huth /* FIXME - check error code? */ 270fcf5ef2aSThomas Huth result = -1; 271fcf5ef2aSThomas Huth } else { 272fcf5ef2aSThomas Huth result = write(arg0, p, len); 273fcf5ef2aSThomas Huth unlock_user(p, arg0, 0); 274fcf5ef2aSThomas Huth } 275fcf5ef2aSThomas Huth } 276fcf5ef2aSThomas Huth break; 277fcf5ef2aSThomas Huth case HOSTED_LSEEK: 278fcf5ef2aSThomas Huth { 279fcf5ef2aSThomas Huth uint64_t off; 280fcf5ef2aSThomas Huth GET_ARG(0); 281fcf5ef2aSThomas Huth GET_ARG(1); 282fcf5ef2aSThomas Huth GET_ARG(2); 283fcf5ef2aSThomas Huth GET_ARG(3); 284fcf5ef2aSThomas Huth off = (uint32_t)arg2 | ((uint64_t)arg1 << 32); 285fcf5ef2aSThomas Huth if (use_gdb_syscalls()) { 286fcf5ef2aSThomas Huth m68k_semi_is_fseek = 1; 287fcf5ef2aSThomas Huth gdb_do_syscall(m68k_semi_cb, "fseek,%x,%lx,%x", 288fcf5ef2aSThomas Huth arg0, off, arg3); 289fcf5ef2aSThomas Huth } else { 290fcf5ef2aSThomas Huth off = lseek(arg0, off, arg3); 291fcf5ef2aSThomas Huth m68k_semi_return_u64(env, off, errno); 292fcf5ef2aSThomas Huth } 293fcf5ef2aSThomas Huth return; 294fcf5ef2aSThomas Huth } 295fcf5ef2aSThomas Huth case HOSTED_RENAME: 296fcf5ef2aSThomas Huth GET_ARG(0); 297fcf5ef2aSThomas Huth GET_ARG(1); 298fcf5ef2aSThomas Huth GET_ARG(2); 299fcf5ef2aSThomas Huth GET_ARG(3); 300fcf5ef2aSThomas Huth if (use_gdb_syscalls()) { 301fcf5ef2aSThomas Huth gdb_do_syscall(m68k_semi_cb, "rename,%s,%s", 302fcf5ef2aSThomas Huth arg0, (int)arg1, arg2, (int)arg3); 303fcf5ef2aSThomas Huth return; 304fcf5ef2aSThomas Huth } else { 305fcf5ef2aSThomas Huth p = lock_user_string(arg0); 306fcf5ef2aSThomas Huth q = lock_user_string(arg2); 307fcf5ef2aSThomas Huth if (!p || !q) { 308fcf5ef2aSThomas Huth /* FIXME - check error code? */ 309fcf5ef2aSThomas Huth result = -1; 310fcf5ef2aSThomas Huth } else { 311fcf5ef2aSThomas Huth result = rename(p, q); 312fcf5ef2aSThomas Huth } 313fcf5ef2aSThomas Huth unlock_user(p, arg0, 0); 314fcf5ef2aSThomas Huth unlock_user(q, arg2, 0); 315fcf5ef2aSThomas Huth } 316fcf5ef2aSThomas Huth break; 317fcf5ef2aSThomas Huth case HOSTED_UNLINK: 318fcf5ef2aSThomas Huth GET_ARG(0); 319fcf5ef2aSThomas Huth GET_ARG(1); 320fcf5ef2aSThomas Huth if (use_gdb_syscalls()) { 321fcf5ef2aSThomas Huth gdb_do_syscall(m68k_semi_cb, "unlink,%s", 322fcf5ef2aSThomas Huth arg0, (int)arg1); 323fcf5ef2aSThomas Huth return; 324fcf5ef2aSThomas Huth } else { 325fcf5ef2aSThomas Huth p = lock_user_string(arg0); 326fcf5ef2aSThomas Huth if (!p) { 327fcf5ef2aSThomas Huth /* FIXME - check error code? */ 328fcf5ef2aSThomas Huth result = -1; 329fcf5ef2aSThomas Huth } else { 330fcf5ef2aSThomas Huth result = unlink(p); 331fcf5ef2aSThomas Huth unlock_user(p, arg0, 0); 332fcf5ef2aSThomas Huth } 333fcf5ef2aSThomas Huth } 334fcf5ef2aSThomas Huth break; 335fcf5ef2aSThomas Huth case HOSTED_STAT: 336fcf5ef2aSThomas Huth GET_ARG(0); 337fcf5ef2aSThomas Huth GET_ARG(1); 338fcf5ef2aSThomas Huth GET_ARG(2); 339fcf5ef2aSThomas Huth if (use_gdb_syscalls()) { 340fcf5ef2aSThomas Huth gdb_do_syscall(m68k_semi_cb, "stat,%s,%x", 341fcf5ef2aSThomas Huth arg0, (int)arg1, arg2); 342fcf5ef2aSThomas Huth return; 343fcf5ef2aSThomas Huth } else { 344fcf5ef2aSThomas Huth struct stat s; 345fcf5ef2aSThomas Huth p = lock_user_string(arg0); 346fcf5ef2aSThomas Huth if (!p) { 347fcf5ef2aSThomas Huth /* FIXME - check error code? */ 348fcf5ef2aSThomas Huth result = -1; 349fcf5ef2aSThomas Huth } else { 350fcf5ef2aSThomas Huth result = stat(p, &s); 351fcf5ef2aSThomas Huth unlock_user(p, arg0, 0); 352fcf5ef2aSThomas Huth } 353fcf5ef2aSThomas Huth if (result == 0) { 354fcf5ef2aSThomas Huth translate_stat(env, arg2, &s); 355fcf5ef2aSThomas Huth } 356fcf5ef2aSThomas Huth } 357fcf5ef2aSThomas Huth break; 358fcf5ef2aSThomas Huth case HOSTED_FSTAT: 359fcf5ef2aSThomas Huth GET_ARG(0); 360fcf5ef2aSThomas Huth GET_ARG(1); 361fcf5ef2aSThomas Huth if (use_gdb_syscalls()) { 362fcf5ef2aSThomas Huth gdb_do_syscall(m68k_semi_cb, "fstat,%x,%x", 363fcf5ef2aSThomas Huth arg0, arg1); 364fcf5ef2aSThomas Huth return; 365fcf5ef2aSThomas Huth } else { 366fcf5ef2aSThomas Huth struct stat s; 367fcf5ef2aSThomas Huth result = fstat(arg0, &s); 368fcf5ef2aSThomas Huth if (result == 0) { 369fcf5ef2aSThomas Huth translate_stat(env, arg1, &s); 370fcf5ef2aSThomas Huth } 371fcf5ef2aSThomas Huth } 372fcf5ef2aSThomas Huth break; 373fcf5ef2aSThomas Huth case HOSTED_GETTIMEOFDAY: 374fcf5ef2aSThomas Huth GET_ARG(0); 375fcf5ef2aSThomas Huth GET_ARG(1); 376fcf5ef2aSThomas Huth if (use_gdb_syscalls()) { 377fcf5ef2aSThomas Huth gdb_do_syscall(m68k_semi_cb, "gettimeofday,%x,%x", 378fcf5ef2aSThomas Huth arg0, arg1); 379fcf5ef2aSThomas Huth return; 380fcf5ef2aSThomas Huth } else { 381fcf5ef2aSThomas Huth qemu_timeval tv; 382fcf5ef2aSThomas Huth struct gdb_timeval *p; 383fcf5ef2aSThomas Huth result = qemu_gettimeofday(&tv); 384fcf5ef2aSThomas Huth if (result != 0) { 385fcf5ef2aSThomas Huth if (!(p = lock_user(VERIFY_WRITE, 386fcf5ef2aSThomas Huth arg0, sizeof(struct gdb_timeval), 0))) { 387fcf5ef2aSThomas Huth /* FIXME - check error code? */ 388fcf5ef2aSThomas Huth result = -1; 389fcf5ef2aSThomas Huth } else { 390fcf5ef2aSThomas Huth p->tv_sec = cpu_to_be32(tv.tv_sec); 391fcf5ef2aSThomas Huth p->tv_usec = cpu_to_be64(tv.tv_usec); 392fcf5ef2aSThomas Huth unlock_user(p, arg0, sizeof(struct gdb_timeval)); 393fcf5ef2aSThomas Huth } 394fcf5ef2aSThomas Huth } 395fcf5ef2aSThomas Huth } 396fcf5ef2aSThomas Huth break; 397fcf5ef2aSThomas Huth case HOSTED_ISATTY: 398fcf5ef2aSThomas Huth GET_ARG(0); 399fcf5ef2aSThomas Huth if (use_gdb_syscalls()) { 400fcf5ef2aSThomas Huth gdb_do_syscall(m68k_semi_cb, "isatty,%x", arg0); 401fcf5ef2aSThomas Huth return; 402fcf5ef2aSThomas Huth } else { 403fcf5ef2aSThomas Huth result = isatty(arg0); 404fcf5ef2aSThomas Huth } 405fcf5ef2aSThomas Huth break; 406fcf5ef2aSThomas Huth case HOSTED_SYSTEM: 407fcf5ef2aSThomas Huth GET_ARG(0); 408fcf5ef2aSThomas Huth GET_ARG(1); 409fcf5ef2aSThomas Huth if (use_gdb_syscalls()) { 410fcf5ef2aSThomas Huth gdb_do_syscall(m68k_semi_cb, "system,%s", 411fcf5ef2aSThomas Huth arg0, (int)arg1); 412fcf5ef2aSThomas Huth return; 413fcf5ef2aSThomas Huth } else { 414fcf5ef2aSThomas Huth p = lock_user_string(arg0); 415fcf5ef2aSThomas Huth if (!p) { 416fcf5ef2aSThomas Huth /* FIXME - check error code? */ 417fcf5ef2aSThomas Huth result = -1; 418fcf5ef2aSThomas Huth } else { 419fcf5ef2aSThomas Huth result = system(p); 420fcf5ef2aSThomas Huth unlock_user(p, arg0, 0); 421fcf5ef2aSThomas Huth } 422fcf5ef2aSThomas Huth } 423fcf5ef2aSThomas Huth break; 424fcf5ef2aSThomas Huth case HOSTED_INIT_SIM: 425fcf5ef2aSThomas Huth #if defined(CONFIG_USER_ONLY) 426fcf5ef2aSThomas Huth { 427a8d92fd8SRichard Henderson CPUState *cs = env_cpu(env); 428fcf5ef2aSThomas Huth TaskState *ts = cs->opaque; 429fcf5ef2aSThomas Huth /* Allocate the heap using sbrk. */ 430fcf5ef2aSThomas Huth if (!ts->heap_limit) { 431fcf5ef2aSThomas Huth abi_ulong ret; 432fcf5ef2aSThomas Huth uint32_t size; 433fcf5ef2aSThomas Huth uint32_t base; 434fcf5ef2aSThomas Huth 435fcf5ef2aSThomas Huth base = do_brk(0); 436fcf5ef2aSThomas Huth size = SEMIHOSTING_HEAP_SIZE; 437fcf5ef2aSThomas Huth /* Try a big heap, and reduce the size if that fails. */ 438fcf5ef2aSThomas Huth for (;;) { 439fcf5ef2aSThomas Huth ret = do_brk(base + size); 440fcf5ef2aSThomas Huth if (ret >= (base + size)) { 441fcf5ef2aSThomas Huth break; 442fcf5ef2aSThomas Huth } 443fcf5ef2aSThomas Huth size >>= 1; 444fcf5ef2aSThomas Huth } 445fcf5ef2aSThomas Huth ts->heap_limit = base + size; 446fcf5ef2aSThomas Huth } 447*808d77bcSLucien Murray-Pitts /* 448*808d77bcSLucien Murray-Pitts * This call may happen before we have writable memory, so return 449*808d77bcSLucien Murray-Pitts * values directly in registers. 450*808d77bcSLucien Murray-Pitts */ 451fcf5ef2aSThomas Huth env->dregs[1] = ts->heap_limit; 452fcf5ef2aSThomas Huth env->aregs[7] = ts->stack_base; 453fcf5ef2aSThomas Huth } 454fcf5ef2aSThomas Huth #else 455*808d77bcSLucien Murray-Pitts /* 456*808d77bcSLucien Murray-Pitts * FIXME: This is wrong for boards where RAM does not start at 457*808d77bcSLucien Murray-Pitts * address zero. 458*808d77bcSLucien Murray-Pitts */ 459fcf5ef2aSThomas Huth env->dregs[1] = ram_size; 460fcf5ef2aSThomas Huth env->aregs[7] = ram_size; 461fcf5ef2aSThomas Huth #endif 462fcf5ef2aSThomas Huth return; 463fcf5ef2aSThomas Huth default: 464a8d92fd8SRichard Henderson cpu_abort(env_cpu(env), "Unsupported semihosting syscall %d\n", nr); 465fcf5ef2aSThomas Huth result = 0; 466fcf5ef2aSThomas Huth } 467fcf5ef2aSThomas Huth failed: 468fcf5ef2aSThomas Huth m68k_semi_return_u32(env, result, errno); 469fcf5ef2aSThomas Huth } 470