diff options
Diffstat (limited to 'gdb/config/m68k/tm-vx68.h')
-rw-r--r-- | gdb/config/m68k/tm-vx68.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/gdb/config/m68k/tm-vx68.h b/gdb/config/m68k/tm-vx68.h new file mode 100644 index 00000000000..e601bda737c --- /dev/null +++ b/gdb/config/m68k/tm-vx68.h @@ -0,0 +1,91 @@ +/* Target machine description for VxWorks m68k's, for GDB, the GNU debugger. + Copyright 1986, 1987, 1989, 1991, 1992, 1993 Free Software Foundation, Inc. + Contributed by Cygnus Support. + +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. */ + +#define GDBINIT_FILENAME ".vxgdbinit" + +#define DEFAULT_PROMPT "(vxgdb) " + +/* GCC is probably the only compiler used on this configuration. So + get this right even if the code which detects gcc2_compiled. is + still broken. */ + +#define BELIEVE_PCC_PROMOTION 1 + +/* We have more complex, useful breakpoints on the target. */ +#define DECR_PC_AFTER_BREAK 0 + +#include "m68k/tm-m68k.h" + +/* Takes the current frame-struct pointer and returns the chain-pointer + to get to the calling frame. + + If our current frame pointer is zero, we're at the top; else read out + the saved FP from memory pointed to by the current FP. */ + +#undef FRAME_CHAIN +#define FRAME_CHAIN(thisframe) ((thisframe)->frame? read_memory_integer ((thisframe)->frame, 4): 0) + +/* If the chain pointer is zero (either because the saved value fetched + by FRAME_CHAIN was zero, or because the current FP was zero so FRAME_CHAIN + never fetched anything), we are at the top of the stack. */ +/* We are guaranteed to have a zero frame pointer at bottom of stack, too. */ + +#undef FRAME_CHAIN_VALID +#define FRAME_CHAIN_VALID(chain, thisframe) nonnull_frame_chain_valid (chain, thisframe) + +/* FIXME, Longjmp information stolen from Sun-3 config. Dunno if right. */ +/* Offsets (in target ints) into jmp_buf. Not defined by Sun, but at least + documented in a comment in <machine/setjmp.h>! */ + +#define JB_ELEMENT_SIZE 4 + +#define JB_ONSSTACK 0 +#define JB_SIGMASK 1 +#define JB_SP 2 +#define JB_PC 3 +#define JB_PSL 4 +#define JB_D2 5 +#define JB_D3 6 +#define JB_D4 7 +#define JB_D5 8 +#define JB_D6 9 +#define JB_D7 10 +#define JB_A2 11 +#define JB_A3 12 +#define JB_A4 13 +#define JB_A5 14 +#define JB_A6 15 + +/* 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 PARAMS ((CORE_ADDR *)); + +/* Number of registers in a ptrace_getregs call. */ + +#define VX_NUM_REGS (18) + +/* Number of registers in a ptrace_getfpregs call. */ + +#define VX_SIZE_FPREGS (8 * REGISTER_RAW_SIZE (FP0_REGNUM) \ + + (3 * REGISTER_SIZE)) |