arch/powerpc/kernel/ppc32.h

   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 typedef struct compat_siginfo {
  20         int si_signo;
  21         int si_errno;
  22         int si_code;
  23
  24         union {
  25                 int _pad[SI_PAD_SIZE32];
  26
  27                 /* kill() */
  28                 struct {
  29                         compat_pid_t _pid;              /* sender's pid */
  30                         compat_uid_t _uid;              /* sender's uid */
  31                 } _kill;
  32
  33                 /* POSIX.1b timers */
  34                 struct {
  35                         compat_timer_t _tid;                    /* timer id */
  36                         int _overrun;                   /* overrun count */
  37                         compat_sigval_t _sigval;                /* same as below */
  38                         int _sys_private;               /* not to be passed to user */
  39                 } _timer;
  40
  41                 /* POSIX.1b signals */
  42                 struct {
  43                         compat_pid_t _pid;              /* sender's pid */
  44                         compat_uid_t _uid;              /* sender's uid */
  45                         compat_sigval_t _sigval;
  46                 } _rt;
  47
  48                 /* SIGCHLD */
  49                 struct {
  50                         compat_pid_t _pid;              /* which child */
  51                         compat_uid_t _uid;              /* sender's uid */
  52                         int _status;                    /* exit code */
  53                         compat_clock_t _utime;
  54                         compat_clock_t _stime;
  55                 } _sigchld;
  56
  57                 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGEMT */
  58                 struct {
  59                         unsigned int _addr; /* faulting insn/memory ref. */
  60                 } _sigfault;
  61
  62                 /* SIGPOLL */
  63                 struct {
  64                         int _band;      /* POLL_IN, POLL_OUT, POLL_MSG */
  65                         int _fd;
  66                 } _sigpoll;
  67         } _sifields;
  68 } compat_siginfo_t;
  69
  70 #define __old_sigaction32       old_sigaction32
  71
  72 struct __old_sigaction32 {
  73         compat_uptr_t           sa_handler;
  74         compat_old_sigset_t     sa_mask;
  75         unsigned int            sa_flags;
  76         compat_uptr_t           sa_restorer;     /* not used by Linux/SPARC yet */
  77 };
  78
  79
  80
  81 struct sigaction32 {
  82        compat_uptr_t  sa_handler;       /* Really a pointer, but need to deal with 32 bits */
  83        unsigned int sa_flags;
  84        compat_uptr_t sa_restorer;       /* Another 32 bit pointer */
  85        compat_sigset_t sa_mask;         /* A 32 bit mask */
  86 };
  87
  88 typedef struct sigaltstack_32 {
  89         unsigned int ss_sp;
  90         int ss_flags;
  91         compat_size_t ss_size;
  92 } stack_32_t;
  93
  94 struct pt_regs32 {
  95         unsigned int gpr[32];
  96         unsigned int nip;
  97         unsigned int msr;
  98         unsigned int orig_gpr3;         /* Used for restarting system calls */
  99         unsigned int ctr;
 100         unsigned int link;
 101         unsigned int xer;
 102         unsigned int ccr;
 103         unsigned int mq;                /* 601 only (not used at present) */
 104         unsigned int trap;              /* Reason for being here */
 105         unsigned int dar;               /* Fault registers */
 106         unsigned int dsisr;
 107         unsigned int result;            /* Result of a system call */
 108 };
 109
 110 struct sigcontext32 {
 111         unsigned int    _unused[4];
 112         int             signal;
 113         compat_uptr_t   handler;
 114         unsigned int    oldmask;
 115         compat_uptr_t   regs;  /* 4 byte pointer to the pt_regs32 structure. */
 116 };
 117
 118 struct mcontext32 {
 119         elf_gregset_t32         mc_gregs;
 120         elf_fpregset_t          mc_fregs;
 121         unsigned int            mc_pad[2];
 122         elf_vrregset_t32        mc_vregs __attribute__((__aligned__(16)));
 123 };
 124
 125 struct ucontext32 {
 126         unsigned int            uc_flags;
 127         unsigned int            uc_link;
 128         stack_32_t              uc_stack;
 129         int                     uc_pad[7];
 130         compat_uptr_t           uc_regs;        /* points to uc_mcontext field */
 131         compat_sigset_t         uc_sigmask;     /* mask last for extensibility */
 132         /* glibc has 1024-bit signal masks, ours are 64-bit */
 133         int                     uc_maskext[30];
 134         int                     uc_pad2[3];
 135         struct mcontext32       uc_mcontext;
 136 };
 137
 138 #endif  /* _PPC64_PPC32_H */