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

   1 /* Copyright (C) 1999-2024 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #ifndef _SIGCONTEXTINFO_H
  19 #define _SIGCONTEXTINFO_H
  20
  21 /* The sparc32 kernel signal frame for SA_SIGINFO is defined as:
  22
  23   struct rt_signal_frame32
  24   {
  25     struct sparc_stackf32 ss;
  26     compat_siginfo_t info;
  27     struct pt_regs32 regs;          <- void *ctx
  28     compat_sigset_t mask;
  29     u32 fpu_save;
  30     unsigned int insns[2];
  31     compat_stack_t stack;
  32     unsigned int extra_size;
  33     siginfo_extra_v8plus_t v8plus;
  34     u32 rwin_save;
  35   } __attribute__((aligned(8)));
  36
  37   Unlike other architectures, sparc32 passes pt_regs32 REGS pointer as
  38   the third argument to a sa_sigaction handler with SA_SIGINFO enabled.  */
  39
  40 struct pt_regs32
  41 {
  42   unsigned int psr;
  43   unsigned int pc;
  44   unsigned int npc;
  45   unsigned int y;
  46   unsigned int u_regs[16];
  47 };
  48
  49 static inline uintptr_t
  50 sigcontext_get_pc (const struct pt_regs32 *ctx)
  51 {
  52   return ctx->pc;
  53 }
  54
  55 #endif