diff options
Diffstat (limited to 'gdb/m-vax.h')
| -rw-r--r-- | gdb/m-vax.h | 78 |
1 files changed, 58 insertions, 20 deletions
diff --git a/gdb/m-vax.h b/gdb/m-vax.h index 60595cf..906ed03 100644 --- a/gdb/m-vax.h +++ b/gdb/m-vax.h @@ -1,27 +1,52 @@ /* Definitions to make GDB run on a vax under 4.2bsd. - Copyright (C) 1986, 1987 Free Software Foundation, Inc. - -GDB is distributed in the hope that it will be useful, but WITHOUT ANY -WARRANTY. No author or distributor accepts responsibility to anyone -for the consequences of using it or for whether it serves any -particular purpose or works at all, unless he says so in writing. -Refer to the GDB General Public License for full details. - -Everyone is granted permission to copy, modify and redistribute GDB, -but only under the conditions described in the GDB General Public -License. A copy of this license is supposed to have been given to you -along with GDB so you can know your rights and responsibilities. It -should be in a file named COPYING. Among other things, the copyright -notice and this notice must be preserved on all copies. - -In other words, go ahead and share GDB, but don't try to stop -anyone else from sharing it farther. Help stamp out software hoarding! -*/ + Copyright (C) 1986, 1987, 1989 Free Software Foundation, Inc. + +This file is part of GDB. + +GDB 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 1, or (at your option) +any later version. + +GDB 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 GDB; see the file COPYING. If not, write to +the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ + +/* There is one known bug with VAX support that I don't know how to + fix: if you do a backtrace from a signal handler, you get something + like: +#0 0xbc in kill (592, 3) +#1 0x7f in hand (...) (...) +#2 0x7fffec7e in ?? (2, 0, 2147478112, 94) + ^^ GDB doesn't know about sigtramp +#3 0x7fffec70 in ?? (592, 2) + ^^^^^^^^^^ wrong address +#4 0xae in main (...) (...) + +when the correct backtrace (as given by adb) is: +_kill(250,3) from _hand+21 +_hand(2,0,7fffea60,5e) from 7fffec7e +sigtramp(2,0,7fffea60,5e) from _kill+4 +_kill(250,2) from _main+2e +_main(1,7fffeac4,7fffeacc) from start+3d + +If anyone knows enough about VAX BSD to fix this, please send the +fix to bug-gdb@prep.ai.mit.edu. */ #ifndef vax #define vax #endif +/* Define the bit, byte, and word ordering of the machine. */ +/* #define BITS_BIG_ENDIAN */ +/* #define BYTES_BIG_ENDIAN */ +/* #define WORDS_BIG_ENDIAN */ + /* Get rid of any system-imposed stack limit if possible. */ #define SET_STACK_LIMIT_HUGE @@ -218,7 +243,9 @@ anyone else from sharing it farther. Help stamp out software hoarding! #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (*(int *)(REGBUF)) /* Compensate for lack of `vprintf' function. */ +#ifndef HAVE_VPRINTF #define vprintf(format, ap) _doprnt (format, ap, stdout) +#endif /* not HAVE_VPRINTF */ /* Describe the pointer in each stack frame to the previous stack frame (its caller). */ @@ -236,15 +263,26 @@ anyone else from sharing it farther. Help stamp out software hoarding! /* In the case of the Vax, the frame's nominal address is the FP value, and 12 bytes later comes the saved previous FP value as a 4-byte word. */ -#define FRAME_CHAIN(thisframe) (read_memory_integer ((thisframe)->frame + 12, 4)) +#define FRAME_CHAIN(thisframe) \ + (outside_startup_file ((thisframe)->pc) ? \ + read_memory_integer ((thisframe)->frame + 12, 4) :\ + 0) #define FRAME_CHAIN_VALID(chain, thisframe) \ - (chain != 0 && (FRAME_SAVED_PC (thisframe) >= first_object_file_end)) + (chain != 0 && (outside_startup_file (FRAME_SAVED_PC (thisframe)))) #define FRAME_CHAIN_COMBINE(chain, thisframe) (chain) /* Define other aspects of the stack frame. */ +/* A macro that tells us whether the function invocation represented + by FI does not have a frame on the stack associated with it. If it + does not, FRAMELESS is set to 1, else 0. */ +/* On the vax, all functions have frames. */ +#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) {(FRAMELESS) = 0;} + +/* Saved Pc. */ + #define FRAME_SAVED_PC(FRAME) (read_memory_integer ((FRAME)->frame + 16, 4)) /* Cannot find the AP register value directly from the FP value. |