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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * linux/arch/h8300/kernel/sys_h8300.c | |
3 | * | |
4 | * This file contains various random system calls that | |
5 | * have a non-standard calling sequence on the H8/300 | |
6 | * platform. | |
7 | */ | |
8 | ||
9 | #include <linux/errno.h> | |
10 | #include <linux/sched.h> | |
11 | #include <linux/mm.h> | |
12 | #include <linux/smp.h> | |
1da177e4 LT |
13 | #include <linux/sem.h> |
14 | #include <linux/msg.h> | |
15 | #include <linux/shm.h> | |
16 | #include <linux/stat.h> | |
17 | #include <linux/syscalls.h> | |
18 | #include <linux/mman.h> | |
19 | #include <linux/file.h> | |
0cd82ef1 | 20 | #include <linux/fs.h> |
cba4fbbf | 21 | #include <linux/ipc.h> |
1da177e4 LT |
22 | |
23 | #include <asm/setup.h> | |
24 | #include <asm/uaccess.h> | |
25 | #include <asm/cachectl.h> | |
26 | #include <asm/traps.h> | |
fe74290d | 27 | #include <asm/unistd.h> |
1da177e4 | 28 | |
1da177e4 LT |
29 | /* |
30 | * sys_ipc() is the de-multiplexer for the SysV IPC calls.. | |
31 | * | |
32 | * This is really horribly ugly. | |
33 | */ | |
34 | asmlinkage int sys_ipc (uint call, int first, int second, | |
35 | int third, void *ptr, long fifth) | |
36 | { | |
37 | int version, ret; | |
38 | ||
39 | version = call >> 16; /* hack for backward compatibility */ | |
40 | call &= 0xffff; | |
41 | ||
42 | if (call <= SEMCTL) | |
43 | switch (call) { | |
44 | case SEMOP: | |
45 | return sys_semop (first, (struct sembuf *)ptr, second); | |
46 | case SEMGET: | |
47 | return sys_semget (first, second, third); | |
48 | case SEMCTL: { | |
49 | union semun fourth; | |
50 | if (!ptr) | |
51 | return -EINVAL; | |
52 | if (get_user(fourth.__pad, (void **) ptr)) | |
53 | return -EFAULT; | |
54 | return sys_semctl (first, second, third, fourth); | |
55 | } | |
56 | default: | |
57 | return -EINVAL; | |
58 | } | |
59 | if (call <= MSGCTL) | |
60 | switch (call) { | |
61 | case MSGSND: | |
62 | return sys_msgsnd (first, (struct msgbuf *) ptr, | |
63 | second, third); | |
64 | case MSGRCV: | |
65 | switch (version) { | |
66 | case 0: { | |
67 | struct ipc_kludge tmp; | |
68 | if (!ptr) | |
69 | return -EINVAL; | |
70 | if (copy_from_user (&tmp, | |
71 | (struct ipc_kludge *)ptr, | |
72 | sizeof (tmp))) | |
73 | return -EFAULT; | |
74 | return sys_msgrcv (first, tmp.msgp, second, | |
75 | tmp.msgtyp, third); | |
76 | } | |
77 | default: | |
78 | return sys_msgrcv (first, | |
79 | (struct msgbuf *) ptr, | |
80 | second, fifth, third); | |
81 | } | |
82 | case MSGGET: | |
83 | return sys_msgget ((key_t) first, second); | |
84 | case MSGCTL: | |
85 | return sys_msgctl (first, second, | |
86 | (struct msqid_ds *) ptr); | |
87 | default: | |
88 | return -EINVAL; | |
89 | } | |
90 | if (call <= SHMCTL) | |
91 | switch (call) { | |
92 | case SHMAT: | |
93 | switch (version) { | |
94 | default: { | |
95 | ulong raddr; | |
96 | ret = do_shmat (first, (char *) ptr, | |
97 | second, &raddr); | |
98 | if (ret) | |
99 | return ret; | |
100 | return put_user (raddr, (ulong *) third); | |
101 | } | |
102 | } | |
103 | case SHMDT: | |
104 | return sys_shmdt ((char *)ptr); | |
105 | case SHMGET: | |
106 | return sys_shmget (first, second, third); | |
107 | case SHMCTL: | |
108 | return sys_shmctl (first, second, | |
109 | (struct shmid_ds *) ptr); | |
110 | default: | |
111 | return -EINVAL; | |
112 | } | |
113 | ||
114 | return -EINVAL; | |
115 | } | |
116 | ||
117 | /* sys_cacheflush -- no support. */ | |
118 | asmlinkage int | |
119 | sys_cacheflush (unsigned long addr, int scope, int cache, unsigned long len) | |
120 | { | |
121 | return -EINVAL; | |
122 | } | |
123 | ||
124 | asmlinkage int sys_getpagesize(void) | |
125 | { | |
126 | return PAGE_SIZE; | |
127 | } | |
128 | ||
129 | #if defined(CONFIG_SYSCALL_PRINT) | |
130 | asmlinkage void syscall_print(void *dummy,...) | |
131 | { | |
132 | struct pt_regs *regs = (struct pt_regs *) ((unsigned char *)&dummy-4); | |
133 | printk("call %06lx:%ld 1:%08lx,2:%08lx,3:%08lx,ret:%08lx\n", | |
134 | ((regs->pc)&0xffffff)-2,regs->orig_er0,regs->er1,regs->er2,regs->er3,regs->er0); | |
135 | } | |
136 | #endif | |
fe74290d AB |
137 | |
138 | /* | |
139 | * Do a system call from kernel instead of calling sys_execve so we | |
140 | * end up with proper pt_regs. | |
141 | */ | |
142 | int kernel_execve(const char *filename, char *const argv[], char *const envp[]) | |
143 | { | |
144 | register long res __asm__("er0"); | |
8778beb9 YS |
145 | register char *const *_c __asm__("er3") = envp; |
146 | register char *const *_b __asm__("er2") = argv; | |
fe74290d | 147 | register const char * _a __asm__("er1") = filename; |
fe74290d AB |
148 | __asm__ __volatile__ ("mov.l %1,er0\n\t" |
149 | "trapa #0\n\t" | |
150 | : "=r" (res) | |
151 | : "g" (__NR_execve), | |
152 | "g" (_a), | |
153 | "g" (_b), | |
154 | "g" (_c) | |
155 | : "cc", "memory"); | |
156 | return res; | |
157 | } | |
158 | ||
159 |