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/* Target-dependent definitions for FreeBSD/i386.
Copyright 1997, 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. */
/* $FreeBSD$ */
#ifndef TM_FBSD_H
#define TM_FBSD_H
#define HAVE_I387_REGS
#include "i386/tm-i386.h"
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
/* FreeBSD/ELF uses stabs-in-ELF with the DWARF register numbering
scheme by default, so we must redefine STAB_REG_TO_REGNUM. This
messes up the floating-point registers for a.out, but there is not
much we can do about that. */
#undef STAB_REG_TO_REGNUM
#define STAB_REG_TO_REGNUM(reg) i386_dwarf_reg_to_regnum ((reg))
/* FreeBSD uses the old gcc convention for struct returns. */
#define USE_STRUCT_CONVENTION(gcc_p, type) \
generic_use_struct_convention (1, type)
/* Support for longjmp. */
/* Details about jmp_buf. It's supposed to be an array of integers. */
#define GET_LONGJMP_TARGET(addr) get_longjmp_target (addr)
/* On FreeBSD, sigtramp has size 0x18 and is immediately below the
ps_strings struct which has size 0x10 and is at the top of the
user stack. */
#undef SIGTRAMP_START
#undef SIGTRAMP_END
#define SIGTRAMP_START(pc) 0xbfbfdfd8
#define SIGTRAMP_END(pc) 0xbfbfdff0
extern CORE_ADDR i386bsd_sigtramp_start;
extern CORE_ADDR i386bsd_sigtramp_end;
extern CORE_ADDR fbsd_kern_frame_saved_pc(struct frame_info *fr);
/* Override FRAME_SAVED_PC to enable the recognition of signal handlers. */
#undef FRAME_SAVED_PC
#if __FreeBSD_version >= 500032
#define FRAME_SAVED_PC(FRAME) \
(kernel_debugging ? fbsd_kern_frame_saved_pc(FRAME) : \
(((FRAME)->signal_handler_caller \
? sigtramp_saved_pc (FRAME) \
: read_memory_integer ((FRAME)->frame + 4, 4)) \
))
#else
#define FRAME_SAVED_PC(FRAME) \
(((FRAME)->signal_handler_caller \
? sigtramp_saved_pc (FRAME) \
: read_memory_integer ((FRAME)->frame + 4, 4)) \
)
#endif
/* Offset to saved PC in sigcontext, from <sys/signal.h>. */
#define SIGCONTEXT_PC_OFFSET 20
/* Shared library support. */
#ifndef SVR4_SHARED_LIBS
/* Return non-zero if we are in a shared library trampoline code stub. */
#define IN_SOLIB_CALL_TRAMPOLINE(pc, name) \
(name && !strcmp(name, "_DYNAMIC"))
#endif /* !SVR4_SHARED_LIBS */
#endif /* TM_FBSD_H */
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