linux/arch/powerpc/kernel/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
  19typedef 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
  72struct __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
  81struct 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
  88typedef struct sigaltstack_32 {
  89        unsigned int ss_sp;
  90        int ss_flags;
  91        compat_size_t ss_size;
  92} stack_32_t;
  93
  94struct 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
 110struct 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
 118struct 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        elf_vsrreghalf_t32      mc_vsregs __attribute__((__aligned__(16)));
 124};
 125
 126struct ucontext32 { 
 127        unsigned int            uc_flags;
 128        unsigned int            uc_link;
 129        stack_32_t              uc_stack;
 130        int                     uc_pad[7];
 131        compat_uptr_t           uc_regs;        /* points to uc_mcontext field */
 132        compat_sigset_t         uc_sigmask;     /* mask last for extensibility */
 133        /* glibc has 1024-bit signal masks, ours are 64-bit */
 134        int                     uc_maskext[30];
 135        int                     uc_pad2[3];
 136        struct mcontext32       uc_mcontext;
 137};
 138
 139#endif  /* _PPC64_PPC32_H */
 140
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