Commit | Line | Data |
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c906108c | 1 | /* Target machine description for VxWorks m68k's, for GDB, the GNU debugger. |
51603483 DJ |
2 | Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1996, 1998, 1999, 2000, |
3 | 2002, 2003 | |
b6ba6518 | 4 | Free Software Foundation, Inc. |
c906108c SS |
5 | Contributed by Cygnus Support. |
6 | ||
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b JM |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
c906108c | 23 | |
c906108c SS |
24 | /* GCC is probably the only compiler used on this configuration. So |
25 | get this right even if the code which detects gcc2_compiled. is | |
26 | still broken. */ | |
27 | ||
28 | #define BELIEVE_PCC_PROMOTION 1 | |
29 | ||
30 | /* We have more complex, useful breakpoints on the target. */ | |
31 | #define DECR_PC_AFTER_BREAK 0 | |
32 | ||
33 | #include "m68k/tm-m68k.h" | |
4f2e4a4f | 34 | #include "config/tm-vxworks.h" |
c906108c SS |
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 | ||
618ce49f AC |
42 | #undef DEPRECATED_FRAME_CHAIN |
43 | #define DEPRECATED_FRAME_CHAIN(thisframe) ((thisframe)->frame? read_memory_integer ((thisframe)->frame, 4): 0) | |
c906108c | 44 | |
c906108c SS |
45 | /* FIXME, Longjmp information stolen from Sun-3 config. Dunno if right. */ |
46 | /* Offsets (in target ints) into jmp_buf. Not defined by Sun, but at least | |
47 | documented in a comment in <machine/setjmp.h>! */ | |
48 | ||
49 | #define JB_ELEMENT_SIZE 4 | |
50 | ||
51 | #define JB_ONSSTACK 0 | |
52 | #define JB_SIGMASK 1 | |
53 | #define JB_SP 2 | |
54 | #define JB_PC 3 | |
55 | #define JB_PSL 4 | |
56 | #define JB_D2 5 | |
57 | #define JB_D3 6 | |
58 | #define JB_D4 7 | |
59 | #define JB_D5 8 | |
60 | #define JB_D6 9 | |
61 | #define JB_D7 10 | |
62 | #define JB_A2 11 | |
63 | #define JB_A3 12 | |
64 | #define JB_A4 13 | |
65 | #define JB_A5 14 | |
66 | #define JB_A6 15 | |
67 | ||
68 | /* Figure out where the longjmp will land. Slurp the args out of the stack. | |
69 | We expect the first arg to be a pointer to the jmp_buf structure from which | |
70 | we extract the pc (JB_PC) that we will land at. The pc is copied into ADDR. | |
71 | This routine returns true on success */ | |
72 | ||
f4281f55 | 73 | #define GET_LONGJMP_TARGET(ADDR) m68k_get_longjmp_target(ADDR) |
c906108c SS |
74 | |
75 | /* Number of registers in a ptrace_getregs call. */ | |
76 | ||
77 | #define VX_NUM_REGS (18) | |
78 | ||
79 | /* Number of registers in a ptrace_getfpregs call. */ | |
80 | ||
81 | #define VX_SIZE_FPREGS (8 * REGISTER_RAW_SIZE (FP0_REGNUM) \ | |
b1e29e33 | 82 | + (3 * DEPRECATED_REGISTER_SIZE)) |