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ppc32.h
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1 #ifndef _PPC64_PPC32_H
2 #define _PPC64_PPC32_H
3 
4 #include <linux/compat.h>
5 #include <asm/siginfo.h>
6 #include <asm/signal.h>
7 
8 /*
9  * Data types and macros for providing 32b PowerPC support.
10  *
11  * This program is free software; you can redistribute it and/or
12  * modify it under the terms of the GNU General Public License
13  * as published by the Free Software Foundation; either version
14  * 2 of the License, or (at your option) any later version.
15  */
16 
17 /* These are here to support 32-bit syscalls on a 64-bit kernel. */
18 
19 #define __old_sigaction32 old_sigaction32
20 
21 struct __old_sigaction32 {
22  compat_uptr_t sa_handler;
23  compat_old_sigset_t sa_mask;
24  unsigned int sa_flags;
25  compat_uptr_t sa_restorer; /* not used by Linux/SPARC yet */
26 };
27 
28 
29 
30 struct sigaction32 {
31  compat_uptr_t sa_handler; /* Really a pointer, but need to deal with 32 bits */
32  unsigned int sa_flags;
33  compat_uptr_t sa_restorer; /* Another 32 bit pointer */
34  compat_sigset_t sa_mask; /* A 32 bit mask */
35 };
36 
37 typedef struct sigaltstack_32 {
38  unsigned int ss_sp;
39  int ss_flags;
40  compat_size_t ss_size;
41 } stack_32_t;
42 
43 struct pt_regs32 {
44  unsigned int gpr[32];
45  unsigned int nip;
46  unsigned int msr;
47  unsigned int orig_gpr3; /* Used for restarting system calls */
48  unsigned int ctr;
49  unsigned int link;
50  unsigned int xer;
51  unsigned int ccr;
52  unsigned int mq; /* 601 only (not used at present) */
53  unsigned int trap; /* Reason for being here */
54  unsigned int dar; /* Fault registers */
55  unsigned int dsisr;
56  unsigned int result; /* Result of a system call */
57 };
58 
59 struct sigcontext32 {
60  unsigned int _unused[4];
61  int signal;
62  compat_uptr_t handler;
63  unsigned int oldmask;
64  compat_uptr_t regs; /* 4 byte pointer to the pt_regs32 structure. */
65 };
66 
67 struct mcontext32 {
68  elf_gregset_t32 mc_gregs;
69  elf_fpregset_t mc_fregs;
70  unsigned int mc_pad[2];
71  elf_vrregset_t32 mc_vregs __attribute__((__aligned__(16)));
72  elf_vsrreghalf_t32 mc_vsregs __attribute__((__aligned__(16)));
73 };
74 
75 struct ucontext32 {
76  unsigned int uc_flags;
77  unsigned int uc_link;
78  stack_32_t uc_stack;
79  int uc_pad[7];
80  compat_uptr_t uc_regs; /* points to uc_mcontext field */
81  compat_sigset_t uc_sigmask; /* mask last for extensibility */
82  /* glibc has 1024-bit signal masks, ours are 64-bit */
83  int uc_maskext[30];
84  int uc_pad2[3];
85  struct mcontext32 uc_mcontext;
86 };
87 
88 #endif /* _PPC64_PPC32_H */
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