Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Copyright 2003 PathScale, Inc. | |
3 | * | |
4 | * Licensed under the GPL | |
5 | */ | |
6 | ||
7 | #include "linux/linkage.h" | |
8 | #include "linux/slab.h" | |
9 | #include "linux/shm.h" | |
f7fe8781 PBG |
10 | #include "linux/utsname.h" |
11 | #include "linux/personality.h" | |
1da177e4 LT |
12 | #include "asm/uaccess.h" |
13 | #define __FRAME_OFFSETS | |
14 | #include "asm/ptrace.h" | |
15 | #include "asm/unistd.h" | |
16 | #include "asm/prctl.h" /* XXX This should get the constants from libc */ | |
17 | #include "choose-mode.h" | |
ba9950c8 | 18 | #include "kern.h" |
1da177e4 | 19 | |
80f95078 PBG |
20 | asmlinkage long sys_uname64(struct new_utsname __user * name) |
21 | { | |
22 | int err; | |
23 | down_read(&uts_sem); | |
e9ff3990 | 24 | err = copy_to_user(name, utsname(), sizeof (*name)); |
80f95078 PBG |
25 | up_read(&uts_sem); |
26 | if (personality(current->personality) == PER_LINUX32) | |
27 | err |= copy_to_user(&name->machine, "i686", 5); | |
28 | return err ? -EFAULT : 0; | |
29 | } | |
30 | ||
1da177e4 LT |
31 | #ifdef CONFIG_MODE_TT |
32 | extern long arch_prctl(int code, unsigned long addr); | |
33 | ||
34 | static long arch_prctl_tt(int code, unsigned long addr) | |
35 | { | |
36 | unsigned long tmp; | |
37 | long ret; | |
38 | ||
39 | switch(code){ | |
40 | case ARCH_SET_GS: | |
41 | case ARCH_SET_FS: | |
42 | ret = arch_prctl(code, addr); | |
43 | break; | |
44 | case ARCH_GET_FS: | |
45 | case ARCH_GET_GS: | |
46 | ret = arch_prctl(code, (unsigned long) &tmp); | |
47 | if(!ret) | |
ca34fb1a | 48 | ret = put_user(tmp, (long __user *)addr); |
1da177e4 LT |
49 | break; |
50 | default: | |
51 | ret = -EINVAL; | |
52 | break; | |
53 | } | |
54 | ||
55 | return(ret); | |
56 | } | |
57 | #endif | |
58 | ||
59 | #ifdef CONFIG_MODE_SKAS | |
60 | ||
f767b02f | 61 | /* XXX: Must also call arch_prctl in the host, beside saving the segment bases! */ |
1da177e4 LT |
62 | static long arch_prctl_skas(int code, unsigned long addr) |
63 | { | |
64 | long ret = 0; | |
65 | ||
66 | switch(code){ | |
1da177e4 LT |
67 | case ARCH_SET_FS: |
68 | current->thread.regs.regs.skas.regs[FS_BASE / sizeof(unsigned long)] = addr; | |
69 | break; | |
f767b02f PBG |
70 | case ARCH_SET_GS: |
71 | current->thread.regs.regs.skas.regs[GS_BASE / sizeof(unsigned long)] = addr; | |
72 | break; | |
1da177e4 | 73 | case ARCH_GET_FS: |
f767b02f PBG |
74 | ret = put_user(current->thread.regs.regs.skas. |
75 | regs[FS_BASE / sizeof(unsigned long)], | |
76 | (unsigned long __user *)addr); | |
1da177e4 LT |
77 | break; |
78 | case ARCH_GET_GS: | |
f767b02f PBG |
79 | ret = put_user(current->thread.regs.regs.skas. |
80 | regs[GS_BASE / sizeof(unsigned long)], | |
81 | (unsigned long __user *)addr); | |
1da177e4 LT |
82 | break; |
83 | default: | |
84 | ret = -EINVAL; | |
85 | break; | |
86 | } | |
87 | ||
88 | return(ret); | |
89 | } | |
90 | #endif | |
91 | ||
92 | long sys_arch_prctl(int code, unsigned long addr) | |
93 | { | |
94 | return(CHOOSE_MODE_PROC(arch_prctl_tt, arch_prctl_skas, code, addr)); | |
95 | } | |
96 | ||
97 | long sys_clone(unsigned long clone_flags, unsigned long newsp, | |
98 | void __user *parent_tid, void __user *child_tid) | |
99 | { | |
100 | long ret; | |
101 | ||
e0877f07 JD |
102 | if (!newsp) |
103 | newsp = UPT_SP(¤t->thread.regs.regs); | |
1da177e4 | 104 | current->thread.forking = 1; |
e0877f07 JD |
105 | ret = do_fork(clone_flags, newsp, ¤t->thread.regs, 0, parent_tid, |
106 | child_tid); | |
1da177e4 LT |
107 | current->thread.forking = 0; |
108 | return(ret); | |
109 | } |