gdb/config/mips/tm-linux.h

   1 /* Target-dependent definitions for Linux/MIPS.
   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_MIPSLINUX_H
  22 #define TM_MIPSLINUX_H
  23
  24 #include "mips/tm-mips.h"
  25
  26 /* We don't want to inherit tm-mips.h's shared library trampoline code.  */
  27
  28 #undef IN_SOLIB_CALL_TRAMPOLINE
  29 #undef IN_SOLIB_RETURN_TRAMPOLINE
  30 #undef SKIP_TRAMPOLINE_CODE
  31 #undef IGNORE_HELPER_CALL
  32
  33 /* FIXME: Do not include "tm-linux.h", because we do not want the host's
  34    <signal.h>.  Instead, copy the non-signal bits for now.  */
  35
  36 /* We need this file for the SOLIB_TRAMPOLINE stuff.  */
  37
  38 #include "tm-sysv4.h"
  39
  40 /* We define SVR4_SHARED_LIBS unconditionally, on the assumption that
  41    link.h is available on all linux platforms.  For I386 and SH3/4,
  42    we hard-code the information rather than use link.h anyway (for
  43    the benefit of cross-debugging).  We may move to doing that for
  44    other architectures as well.  */
  45
  46 #define SVR4_SHARED_LIBS
  47 #include "solib.h"              /* Support for shared libraries.  */
  48
  49 /* End from "tm-linux.h".  */
  50
  51 /* There's an E_MIPS_ABI_O32 flag in e_flags, but we don't use it - in
  52    fact, using it may violate the o32 ABI.  */
  53
  54 #define MIPS_DEFAULT_ABI MIPS_ABI_O32
  55
  56 /* Linux/MIPS has __SIGRTMAX == 127.  */
  57
  58 #define REALTIME_LO 32
  59 #define REALTIME_HI 128
  60
  61 /* Use target_specific function to define link map offsets.  */
  62
  63 extern struct link_map_offsets *mips_linux_svr4_fetch_link_map_offsets (void);
  64 #define SVR4_FETCH_LINK_MAP_OFFSETS() \
  65   mips_linux_svr4_fetch_link_map_offsets ()
  66
  67 /* Details about jmp_buf.  */
  68
  69 #define JB_ELEMENT_SIZE 4
  70 #define JB_PC 0
  71
  72 /* Figure out where the longjmp will land.  Slurp the arguments out of the
  73    stack.  We expect the first arg to be a pointer to the jmp_buf structure
  74    from which we extract the pc (JB_PC) that we will land at.  The pc is
  75    copied into ADDR.  This routine returns 1 on success.  */
  76
  77 #define GET_LONGJMP_TARGET(ADDR) mips_linux_get_longjmp_target(ADDR)
  78 extern int mips_linux_get_longjmp_target (CORE_ADDR *);
  79
  80 /* We do single stepping in software.  */
  81
  82 #define SOFTWARE_SINGLE_STEP_P() 1
  83 #define SOFTWARE_SINGLE_STEP(sig,bp_p) mips_software_single_step (sig, bp_p)
  84
  85 /* FIXME: This still needs to be implemented.  */
  86
  87 #undef  IN_SIGTRAMP
  88 #define IN_SIGTRAMP(pc, name)   (0)
  89
  90 #endif /* TM_MIPSLINUX_H */