diff options
author | Shaohua Li <shaohua.li@intel.com> | 2008-09-18 03:49:14 -0400 |
---|---|---|
committer | Tony Luck <tony.luck@intel.com> | 2008-10-06 13:41:37 -0400 |
commit | cfb361f13c8136de78c406745abc4e4456e6d480 (patch) | |
tree | 3edb03ec94ee1f5d45f1e7299c461d397bdcbd5e /arch/ia64/include/asm/syscall.h | |
parent | fec6ed1d1f9b78a6acb4a3eb2c46c812ac2e96f0 (diff) |
[IA64] utrace syscall.h support for ia64
Add asm/syscall.h for IA64. Utrace requires this.
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/include/asm/syscall.h')
-rw-r--r-- | arch/ia64/include/asm/syscall.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/syscall.h b/arch/ia64/include/asm/syscall.h new file mode 100644 index 000000000000..3fd4fa6c48dd --- /dev/null +++ b/arch/ia64/include/asm/syscall.h | |||
@@ -0,0 +1,92 @@ | |||
1 | /* | ||
2 | * Access to user system call parameters and results | ||
3 | * | ||
4 | * Copyright (C) 2008 Intel Corp. Shaohua Li <shaohua.li@intel.com> | ||
5 | * | ||
6 | * This copyrighted material is made available to anyone wishing to use, | ||
7 | * modify, copy, or redistribute it subject to the terms and conditions | ||
8 | * of the GNU General Public License v.2. | ||
9 | * | ||
10 | * See asm-generic/syscall.h for descriptions of what we must do here. | ||
11 | */ | ||
12 | |||
13 | #ifndef _ASM_SYSCALL_H | ||
14 | #define _ASM_SYSCALL_H 1 | ||
15 | |||
16 | #include <linux/sched.h> | ||
17 | #include <linux/err.h> | ||
18 | |||
19 | static inline long syscall_get_nr(struct task_struct *task, | ||
20 | struct pt_regs *regs) | ||
21 | { | ||
22 | BUG_ON(IS_IA32_PROCESS(regs)); | ||
23 | |||
24 | if ((long)regs->cr_ifs < 0) /* Not a syscall */ | ||
25 | return -1; | ||
26 | return regs->r15; | ||
27 | } | ||
28 | |||
29 | static inline void syscall_rollback(struct task_struct *task, | ||
30 | struct pt_regs *regs) | ||
31 | { | ||
32 | BUG_ON(IS_IA32_PROCESS(regs)); | ||
33 | /* do nothing */ | ||
34 | } | ||
35 | |||
36 | static inline long syscall_get_error(struct task_struct *task, | ||
37 | struct pt_regs *regs) | ||
38 | { | ||
39 | BUG_ON(IS_IA32_PROCESS(regs)); | ||
40 | |||
41 | return regs->r10 == -1 ? regs->r8:0; | ||
42 | } | ||
43 | |||
44 | static inline long syscall_get_return_value(struct task_struct *task, | ||
45 | struct pt_regs *regs) | ||
46 | { | ||
47 | BUG_ON(IS_IA32_PROCESS(regs)); | ||
48 | |||
49 | return regs->r8; | ||
50 | } | ||
51 | |||
52 | static inline void syscall_set_return_value(struct task_struct *task, | ||
53 | struct pt_regs *regs, | ||
54 | int error, long val) | ||
55 | { | ||
56 | BUG_ON(IS_IA32_PROCESS(regs)); | ||
57 | |||
58 | if (error) { | ||
59 | /* error < 0, but ia64 uses > 0 return value */ | ||
60 | regs->r8 = -error; | ||
61 | regs->r10 = -1; | ||
62 | } else { | ||
63 | regs->r8 = val; | ||
64 | regs->r10 = 0; | ||
65 | } | ||
66 | } | ||
67 | |||
68 | extern void ia64_syscall_get_set_arguments(struct task_struct *task, | ||
69 | struct pt_regs *regs, unsigned int i, unsigned int n, | ||
70 | unsigned long *args, int rw); | ||
71 | static inline void syscall_get_arguments(struct task_struct *task, | ||
72 | struct pt_regs *regs, | ||
73 | unsigned int i, unsigned int n, | ||
74 | unsigned long *args) | ||
75 | { | ||
76 | BUG_ON(IS_IA32_PROCESS(regs)); | ||
77 | BUG_ON(i + n > 6); | ||
78 | |||
79 | ia64_syscall_get_set_arguments(task, regs, i, n, args, 0); | ||
80 | } | ||
81 | |||
82 | static inline void syscall_set_arguments(struct task_struct *task, | ||
83 | struct pt_regs *regs, | ||
84 | unsigned int i, unsigned int n, | ||
85 | unsigned long *args) | ||
86 | { | ||
87 | BUG_ON(IS_IA32_PROCESS(regs)); | ||
88 | BUG_ON(i + n > 6); | ||
89 | |||
90 | ia64_syscall_get_set_arguments(task, regs, i, n, args, 1); | ||
91 | } | ||
92 | #endif /* _ASM_SYSCALL_H */ | ||