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ia32.h
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1 #ifndef _ASM_X86_IA32_H
2 #define _ASM_X86_IA32_H
3 
4 
5 #ifdef CONFIG_IA32_EMULATION
6 
7 #include <linux/compat.h>
8 
9 /*
10  * 32 bit structures for IA32 support.
11  */
12 
13 #include <asm/sigcontext32.h>
14 
15 /* signal.h */
16 struct sigaction32 {
17  unsigned int sa_handler; /* Really a pointer, but need to deal
18  with 32 bits */
19  unsigned int sa_flags;
20  unsigned int sa_restorer; /* Another 32 bit pointer */
21  compat_sigset_t sa_mask; /* A 32 bit mask */
22 };
23 
24 struct old_sigaction32 {
25  unsigned int sa_handler; /* Really a pointer, but need to deal
26  with 32 bits */
27  compat_old_sigset_t sa_mask; /* A 32 bit mask */
28  unsigned int sa_flags;
29  unsigned int sa_restorer; /* Another 32 bit pointer */
30 };
31 
32 typedef struct sigaltstack_ia32 {
33  unsigned int ss_sp;
34  int ss_flags;
35  unsigned int ss_size;
36 } stack_ia32_t;
37 
38 struct ucontext_ia32 {
39  unsigned int uc_flags;
40  unsigned int uc_link;
41  stack_ia32_t uc_stack;
42  struct sigcontext_ia32 uc_mcontext;
43  compat_sigset_t uc_sigmask; /* mask last for extensibility */
44 };
45 
46 struct ucontext_x32 {
47  unsigned int uc_flags;
48  unsigned int uc_link;
49  stack_ia32_t uc_stack;
50  unsigned int uc__pad0; /* needed for alignment */
51  struct sigcontext uc_mcontext; /* the 64-bit sigcontext type */
52  compat_sigset_t uc_sigmask; /* mask last for extensibility */
53 };
54 
55 /* This matches struct stat64 in glibc2.2, hence the absolutely
56  * insane amounts of padding around dev_t's.
57  */
58 struct stat64 {
59  unsigned long long st_dev;
60  unsigned char __pad0[4];
61 
62 #define STAT64_HAS_BROKEN_ST_INO 1
63  unsigned int __st_ino;
64 
65  unsigned int st_mode;
66  unsigned int st_nlink;
67 
68  unsigned int st_uid;
69  unsigned int st_gid;
70 
71  unsigned long long st_rdev;
72  unsigned char __pad3[4];
73 
74  long long st_size;
75  unsigned int st_blksize;
76 
77  long long st_blocks;/* Number 512-byte blocks allocated */
78 
79  unsigned st_atime;
80  unsigned st_atime_nsec;
81  unsigned st_mtime;
82  unsigned st_mtime_nsec;
83  unsigned st_ctime;
84  unsigned st_ctime_nsec;
85 
86  unsigned long long st_ino;
87 } __attribute__((packed));
88 
89 #define IA32_STACK_TOP IA32_PAGE_OFFSET
90 
91 #ifdef __KERNEL__
92 struct linux_binprm;
93 extern int ia32_setup_arg_pages(struct linux_binprm *bprm,
94  unsigned long stack_top, int exec_stack);
95 struct mm_struct;
96 extern void ia32_pick_mmap_layout(struct mm_struct *mm);
97 
98 #endif
99 
100 #endif /* !CONFIG_IA32_SUPPORT */
101 
102 #endif /* _ASM_X86_IA32_H */
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