LXR linux/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#define __old_sigaction32       old_sigaction32
  20
  21struct __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
  30struct 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
  37typedef struct sigaltstack_32 {
  38        unsigned int ss_sp;
  39        int ss_flags;
  40        compat_size_t ss_size;
  41} stack_32_t;
  42
  43struct 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
  59struct 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
  67struct 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
  75struct 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 */
  89