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 struct pt_regs32 {
  20         unsigned int gpr[32];
  21         unsigned int nip;
  22         unsigned int msr;
  23         unsigned int orig_gpr3;         /* Used for restarting system calls */
  24         unsigned int ctr;
  25         unsigned int link;
  26         unsigned int xer;
  27         unsigned int ccr;
  28         unsigned int mq;                /* 601 only (not used at present) */
  29         unsigned int trap;              /* Reason for being here */
  30         unsigned int dar;               /* Fault registers */
  31         unsigned int dsisr;
  32         unsigned int result;            /* Result of a system call */
  33 };
  34
  35 struct sigcontext32 {
  36         unsigned int    _unused[4];
  37         int             signal;
  38         compat_uptr_t   handler;
  39         unsigned int    oldmask;
  40         compat_uptr_t   regs;  /* 4 byte pointer to the pt_regs32 structure. */
  41 };
  42
  43 struct mcontext32 {
  44         elf_gregset_t32         mc_gregs;
  45         elf_fpregset_t          mc_fregs;
  46         unsigned int            mc_pad[2];
  47         elf_vrregset_t32        mc_vregs __attribute__((__aligned__(16)));
  48         elf_vsrreghalf_t32      mc_vsregs __attribute__((__aligned__(16)));
  49 };
  50
  51 struct ucontext32 {
  52         unsigned int            uc_flags;
  53         unsigned int            uc_link;
  54         compat_stack_t          uc_stack;
  55         int                     uc_pad[7];
  56         compat_uptr_t           uc_regs;        /* points to uc_mcontext field */
  57         compat_sigset_t         uc_sigmask;     /* mask last for extensibility */
  58         /* glibc has 1024-bit signal masks, ours are 64-bit */
  59         int                     uc_maskext[30];
  60         int                     uc_pad2[3];
  61         struct mcontext32       uc_mcontext;
  62 };
  63
  64 #endif  /* _PPC64_PPC32_H */