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/* Definitions to target GDB to GNU/Linux on 386.

   Copyright 1992, 1993, 1995, 1996, 1998, 1999, 2000, 2001

   Free Software Foundation, Inc.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 2 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, write to the Free Software

   Foundation, Inc., 59 Temple Place - Suite 330,

   Boston, MA 02111-1307, USA.  */

#ifndef TM_LINUX_H

#define TM_LINUX_H

#define I386_GNULINUX_TARGET

#define HAVE_I387_REGS

#ifdef HAVE_PTRACE_GETFPXREGS

#define HAVE_SSE_REGS

#endif

#include "i386/tm-i386.h"

#include "tm-linux.h"

/* Use target_specific function to define link map offsets.  */

extern struct link_map_offsets *i386_linux_svr4_fetch_link_map_offsets (void);

#define SVR4_FETCH_LINK_MAP_OFFSETS() i386_linux_svr4_fetch_link_map_offsets ()

/* The following works around a problem with /usr/include/sys/procfs.h  */

#define sys_quotactl 1

/* When the i386 Linux kernel calls a signal handler, the return

   address points to a bit of code on the stack.  These definitions

   are used to identify this bit of code as a signal trampoline in

   order to support backtracing through calls to signal handlers.  */

#define IN_SIGTRAMP(pc, name) i386_linux_in_sigtramp (pc, name)

extern int i386_linux_in_sigtramp (CORE_ADDR, char *);

#undef FRAME_CHAIN

#define FRAME_CHAIN(frame) i386_linux_frame_chain (frame)

extern CORE_ADDR i386_linux_frame_chain (struct frame_info *frame);

#undef FRAME_SAVED_PC

#define FRAME_SAVED_PC(frame) i386_linux_frame_saved_pc (frame)

extern CORE_ADDR i386_linux_frame_saved_pc (struct frame_info *frame);

#undef SAVED_PC_AFTER_CALL

#define SAVED_PC_AFTER_CALL(frame) i386_linux_saved_pc_after_call (frame)

extern CORE_ADDR i386_linux_saved_pc_after_call (struct frame_info *);

/* When we call a function in a shared library, and the PLT sends us

   into the dynamic linker to find the function's real address, we

   need to skip over the dynamic linker call.  This function decides

   when to skip, and where to skip to.  See the comments for

   SKIP_SOLIB_RESOLVER at the top of infrun.c.  */

#define SKIP_SOLIB_RESOLVER i386_linux_skip_solib_resolver

extern CORE_ADDR i386_linux_skip_solib_resolver (CORE_ADDR pc);

/* N_FUN symbols in shared libaries have 0 for their values and need

   to be relocated. */

#define SOFUN_ADDRESS_MAYBE_MISSING

/* Support for longjmp.  */

/* Details about jmp_buf.  It's supposed to be an array of integers.  */

#define JB_ELEMENT_SIZE 4       /* Size of elements in jmp_buf.  */

#define JB_PC           5       /* Array index of saved PC.  */

/* Figure out where the longjmp will land.  Slurp the args out of the

   stack.  We expect the first arg to be a pointer to the jmp_buf

   structure from which we extract the pc (JB_PC) that we will land

   at.  The pc is copied into ADDR.  This routine returns true on

   success.  */

#define GET_LONGJMP_TARGET(addr) get_longjmp_target (addr)

extern int get_longjmp_target (CORE_ADDR *addr);

#endif /* #ifndef TM_LINUX_H */