sysdeps/unix/sysv/linux/sparc/sparc32/sigcontextinfo.h

   1 /* Copyright (C) 1999-2020 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Jakub Jelinek <jakub@redhat.com>, 1999.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _SIGCONTEXTINFO_H
  20 #define _SIGCONTEXTINFO_H
  21
  22 /* The sparc32 kernel signal frame for SA_SIGINFO is defined as:
  23
  24   struct rt_signal_frame32
  25   {
  26     struct sparc_stackf32 ss;
  27     compat_siginfo_t info;
  28     struct pt_regs32 regs;          <- void *ctx
  29     compat_sigset_t mask;
  30     u32 fpu_save;
  31     unsigned int insns[2];
  32     compat_stack_t stack;
  33     unsigned int extra_size;
  34     siginfo_extra_v8plus_t v8plus;
  35     u32 rwin_save;
  36   } __attribute__((aligned(8)));
  37
  38   Unlike other architectures, sparc32 passes pt_regs32 REGS pointer as
  39   the third argument to a sa_sigaction handler with SA_SIGINFO enabled.  */
  40
  41 struct pt_regs32
  42 {
  43   unsigned int psr;
  44   unsigned int pc;
  45   unsigned int npc;
  46   unsigned int y;
  47   unsigned int u_regs[16];
  48 };
  49
  50 static inline uintptr_t
  51 sigcontext_get_pc (const struct pt_regs32 *ctx)
  52 {
  53   return ctx->pc;
  54 }
  55
  56 #endif