projects / thirdparty / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 5076de82 FF |
1 | /* Target machine description for VxWorks 68k's, for GDB, the GNU debugger. |
| 2 | Copyright 1986, 1987, 1989, 1991, 1992, 1993 Free Software Foundation, Inc. | |
| 3 | Contributed by Cygnus Support. | |
| 4 | ||
| 5 | This file is part of GDB. | |
| 6 | ||
| 7 | This program is free software; you can redistribute it and/or modify | |
| 8 | it under the terms of the GNU General Public License as published by | |
| 9 | the Free Software Foundation; either version 2 of the License, or | |
| 10 | (at your option) any later version. | |
| 11 | ||
| 12 | This program is distributed in the hope that it will be useful, | |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 | GNU General Public License for more details. | |
| 16 | ||
| 17 | You should have received a copy of the GNU General Public License | |
| 18 | along with this program; if not, write to the Free Software | |
| 19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
| 20 | ||
| 21 | #define GDBINIT_FILENAME ".vxgdbinit" | |
| 22 | ||
| 23 | #define DEFAULT_PROMPT "(vxgdb) " | |
| 24 | ||
| 25 | #define HAVE_68881 | |
| 26 | ||
| 27 | /* We have more complex, useful breakpoints on the target. */ | |
| 28 | #define DECR_PC_AFTER_BREAK 0 | |
| 29 | ||
| 30 | #include "m68k/tm-68k.h" | |
| 31 | ||
| 32 | /* We are guaranteed to have a zero frame pointer at bottom of stack, too. */ | |
| 33 | #undef FRAME_CHAIN | |
| 34 | #undef FRAME_CHAIN_VALID | |
| 35 | ||
| 36 | /* Takes the current frame-struct pointer and returns the chain-pointer | |
| 37 | to get to the calling frame. | |
| 38 | ||
| 39 | If our current frame pointer is zero, we're at the top; else read out | |
| 40 | the saved FP from memory pointed to by the current FP. */ | |
| 41 | ||
| 42 | #define FRAME_CHAIN(thisframe) ((thisframe)->frame? read_memory_integer ((thisframe)->frame, 4): 0) | |
| 43 | ||
| 44 | /* If the chain pointer is zero (either because the saved value fetched | |
| 45 | by FRAME_CHAIN was zero, or because the current FP was zero so FRAME_CHAIN | |
| 46 | never fetched anything), we are at the top of the stack. */ | |
| 47 | ||
| 48 | #define FRAME_CHAIN_VALID(chain, thisframe) (chain != 0) | |
| 49 | ||
| 50 | /* FIXME, Longjmp information stolen from Sun-3 config. Dunno if right. */ | |
| 51 | /* Offsets (in target ints) into jmp_buf. Not defined by Sun, but at least | |
| 52 | documented in a comment in <machine/setjmp.h>! */ | |
| 53 | ||
| 54 | #define JB_ELEMENT_SIZE 4 | |
| 55 | ||
| 56 | #define JB_ONSSTACK 0 | |
| 57 | #define JB_SIGMASK 1 | |
| 58 | #define JB_SP 2 | |
| 59 | #define JB_PC 3 | |
| 60 | #define JB_PSL 4 | |
| 61 | #define JB_D2 5 | |
| 62 | #define JB_D3 6 | |
| 63 | #define JB_D4 7 | |
| 64 | #define JB_D5 8 | |
| 65 | #define JB_D6 9 | |
| 66 | #define JB_D7 10 | |
| 67 | #define JB_A2 11 | |
| 68 | #define JB_A3 12 | |
| 69 | #define JB_A4 13 | |
| 70 | #define JB_A5 14 | |
| 71 | #define JB_A6 15 | |
| 72 | ||
| 73 | /* Figure out where the longjmp will land. Slurp the args out of the stack. | |
| 74 | We expect the first arg to be a pointer to the jmp_buf structure from which | |
| 75 | we extract the pc (JB_PC) that we will land at. The pc is copied into ADDR. | |
| 76 | This routine returns true on success */ | |
| 77 | ||
| 78 | #define GET_LONGJMP_TARGET(ADDR) get_longjmp_target(ADDR) |