1  /* Perform a `longjmp' on a Mach thread_state.  x86_64 version.
       2     Copyright (C) 1991-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       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  #include <hurd/signal.h>
      20  #include <setjmp.h>
      21  #include <jmpbuf-offsets.h>
      22  #include <mach/thread_status.h>
      23  
      24  
      25  /* Set up STATE to do the equivalent of `longjmp (ENV, VAL);'.  */
      26  
      27  void
      28  _hurd_longjmp_thread_state (void *state, jmp_buf env, int val)
      29  {
      30    struct i386_thread_state *ts = state;
      31  
      32    ts->rbx = env[0].__jmpbuf[JB_RBX];
      33    ts->rbp = env[0].__jmpbuf[JB_RBP];
      34    ts->r12 = env[0].__jmpbuf[JB_R12];
      35    ts->r13 = env[0].__jmpbuf[JB_R13];
      36    ts->r14 = env[0].__jmpbuf[JB_R14];
      37    ts->r15 = env[0].__jmpbuf[JB_R15];
      38    ts->ursp = env[0].__jmpbuf[JB_RSP];
      39    ts->rip = env[0].__jmpbuf[JB_PC];
      40    ts->rax = val ?: 1;
      41  }