void do_m68k_simcall(CPUM68KState *env, int nr) { uint32_t *args; args = (uint32_t *)(env->aregs[7] + 4); switch (nr) { case SYS_EXIT: exit(ARG(0)); case SYS_READ: check_err(env, read(ARG(0), (void *)ARG(1), ARG(2))); break; case SYS_WRITE: check_err(env, write(ARG(0), (void *)ARG(1), ARG(2))); break; case SYS_OPEN: check_err(env, open((char *)ARG(0), translate_openflags(ARG(1)), ARG(2))); break; case SYS_CLOSE: { /* Ignore attempts to close stdin/out/err. */ int fd = ARG(0); if (fd > 2) check_err(env, close(fd)); else check_err(env, 0); break; } case SYS_BRK: { int32_t ret; ret = do_brk((void *)ARG(0)); if (ret == -ENOMEM) ret = -1; check_err(env, ret); } break; case SYS_FSTAT: { struct stat s; int rc; struct m86k_sim_stat *p; rc = check_err(env, fstat(ARG(0), &s)); if (rc == 0) { p = (struct m86k_sim_stat *)ARG(1); p->sim_st_dev = tswap16(s.st_dev); p->sim_st_ino = tswap16(s.st_ino); p->sim_st_mode = tswap32(s.st_mode); p->sim_st_nlink = tswap16(s.st_nlink); p->sim_st_uid = tswap16(s.st_uid); p->sim_st_gid = tswap16(s.st_gid); p->sim_st_rdev = tswap16(s.st_rdev); p->sim_st_size = tswap32(s.st_size); p->sim_st_atime = tswap32(s.st_atime); p->sim_st_mtime = tswap32(s.st_mtime); p->sim_st_ctime = tswap32(s.st_ctime); p->sim_st_blksize = tswap32(s.st_blksize); p->sim_st_blocks = tswap32(s.st_blocks); } } break; case SYS_ISATTY: check_err(env, isatty(ARG(0))); break; case SYS_LSEEK: check_err(env, lseek(ARG(0), (int32_t)ARG(1), ARG(2))); break; default: cpu_abort(env, "Unsupported m68k sim syscall %d\n", nr); } }