2 * m68k simulator syscall interface
4 * Copyright (c) 2005 CodeSourcery, LLC. Written by Paul Brook.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
20 #include <sys/types.h>
41 struct m68k_sim_stat {
45 uint16_t sim_st_nlink;
50 uint32_t sim_st_atime;
51 uint32_t sim_st_mtime;
52 uint32_t sim_st_ctime;
53 uint32_t sim_st_blksize;
54 uint32_t sim_st_blocks;
57 static inline uint32_t check_err(CPUM68KState *env, uint32_t code)
60 if (code == (uint32_t)-1) {
61 env->dregs[1] = errno;
68 #define SIM_O_APPEND 0x0008
69 #define SIM_O_CREAT 0x0200
70 #define SIM_O_TRUNC 0x0400
71 #define SIM_O_EXCL 0x0800
72 #define SIM_O_NONBLOCK 0x4000
73 #define SIM_O_NOCTTY 0x8000
74 #define SIM_O_SYNC 0x2000
76 static int translate_openflags(int flags)
81 case 0: hf = O_RDONLY; break;
82 case 1: hf = O_WRONLY; break;
83 case 2: hf = O_RDWR; break;
84 default: hf = O_RDWR; break;
87 if (flags & SIM_O_APPEND) hf |= O_APPEND;
88 if (flags & SIM_O_CREAT) hf |= O_CREAT;
89 if (flags & SIM_O_TRUNC) hf |= O_TRUNC;
90 if (flags & SIM_O_EXCL) hf |= O_EXCL;
91 if (flags & SIM_O_NONBLOCK) hf |= O_NONBLOCK;
92 if (flags & SIM_O_NOCTTY) hf |= O_NOCTTY;
93 if (flags & SIM_O_SYNC) hf |= O_SYNC;
98 #define ARG(x) tswap32(args[x])
99 void do_m68k_simcall(CPUM68KState *env, int nr)
101 M68kCPU *cpu = m68k_env_get_cpu(env);
104 args = (uint32_t *)(unsigned long)(env->aregs[7] + 4);
109 check_err(env, read(ARG(0), (void *)(unsigned long)ARG(1), ARG(2)));
112 check_err(env, write(ARG(0), (void *)(unsigned long)ARG(1), ARG(2)));
115 check_err(env, open((char *)(unsigned long)ARG(0),
116 translate_openflags(ARG(1)), ARG(2)));
120 /* Ignore attempts to close stdin/out/err. */
123 check_err(env, close(fd));
132 ret = do_brk((abi_ulong)ARG(0));
142 struct m68k_sim_stat *p;
143 rc = check_err(env, fstat(ARG(0), &s));
145 p = (struct m68k_sim_stat *)(unsigned long)ARG(1);
146 p->sim_st_dev = tswap16(s.st_dev);
147 p->sim_st_ino = tswap16(s.st_ino);
148 p->sim_st_mode = tswap32(s.st_mode);
149 p->sim_st_nlink = tswap16(s.st_nlink);
150 p->sim_st_uid = tswap16(s.st_uid);
151 p->sim_st_gid = tswap16(s.st_gid);
152 p->sim_st_rdev = tswap16(s.st_rdev);
153 p->sim_st_size = tswap32(s.st_size);
154 p->sim_st_atime = tswap32(s.st_atime);
155 p->sim_st_mtime = tswap32(s.st_mtime);
156 p->sim_st_ctime = tswap32(s.st_ctime);
157 p->sim_st_blksize = tswap32(s.st_blksize);
158 p->sim_st_blocks = tswap32(s.st_blocks);
163 check_err(env, isatty(ARG(0)));
166 check_err(env, lseek(ARG(0), (int32_t)ARG(1), ARG(2)));
169 cpu_abort(CPU(cpu), "Unsupported m68k sim syscall %d\n", nr);