| /* Target machine description for VxWorks m68k's, for GDB, the GNU debugger. |
| Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1996, 1998, 1999, 2000, |
| 2002, 2003 |
| 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. */ |
| |
| /* 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" |
| #include "config/tm-vxworks.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 DEPRECATED_FRAME_CHAIN |
| #define DEPRECATED_FRAME_CHAIN(thisframe) ((thisframe)->frame? read_memory_integer ((thisframe)->frame, 4): 0) |
| |
| /* 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) m68k_get_longjmp_target(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)) |