gdb/config/i386/tm-obsd.h

   1 /* Target-dependent definitions for OpenBSD/i386.
   2    Copyright 2001 Free Software Foundation, Inc.
   3
   4    This file is part of GDB.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 #ifndef TM_OBSD_H
  22 #define TM_OBSD_H
  23
  24 #include "i386/tm-i386.h"
  25
  26 /* OpenBSD uses the old gcc convention for struct returns.  */
  27
  28 #define USE_STRUCT_CONVENTION(gcc_p, type) \
  29   generic_use_struct_convention (1, type)
  30 \f
  31
  32 /* Support for longjmp.  */
  33
  34 /* Details about jmp_buf.  It's supposed to be an array of integers.  */
  35
  36 #define JB_ELEMENT_SIZE 4       /* Size of elements in jmp_buf.  */
  37 #define JB_PC           0       /* Array index of saved PC.  */
  38
  39 /* Figure out where the longjmp will land.  Store the address that
  40    longjmp will jump to in *ADDR, and return non-zero if successful.  */
  41
  42 #define GET_LONGJMP_TARGET(addr) get_longjmp_target (addr)
  43 extern int get_longjmp_target (CORE_ADDR *addr);
  44 \f
  45
  46 /* Support for signal handlers.  */
  47
  48 #define IN_SIGTRAMP(pc, name) i386bsd_in_sigtramp (pc, name)
  49 extern int i386bsd_in_sigtramp (CORE_ADDR pc, char *name);
  50
  51 /* These defines allow the recognition of sigtramps as a function name
  52    <sigtramp>.
  53
  54    FIXME: kettenis/2001-07-13: These should be added to the target
  55    vector and turned into functions when we go "multi-arch".  */
  56
  57 #define SIGTRAMP_START(pc) i386bsd_sigtramp_start
  58 #define SIGTRAMP_END(pc) i386bsd_sigtramp_end
  59 extern CORE_ADDR i386bsd_sigtramp_start;
  60 extern CORE_ADDR i386bsd_sigtramp_end;
  61
  62 /* Override FRAME_SAVED_PC to enable the recognition of signal handlers.  */
  63
  64 #undef FRAME_SAVED_PC
  65 #define FRAME_SAVED_PC(frame) i386bsd_frame_saved_pc (frame)
  66 extern CORE_ADDR i386bsd_frame_saved_pc (struct frame_info *frame);
  67 \f
  68
  69 /* Shared library support.  */
  70
  71 /* Return non-zero if we are in a shared library trampoline code stub.  */
  72
  73 #define IN_SOLIB_CALL_TRAMPOLINE(pc, name) \
  74   (name && !strcmp(name, "_DYNAMIC"))
  75
  76 #endif /* tm-obsd.h */