diff options
Diffstat (limited to 'gdb/mem-break.c')
| -rw-r--r-- | gdb/mem-break.c | 100 |
1 files changed, 12 insertions, 88 deletions
diff --git a/gdb/mem-break.c b/gdb/mem-break.c index eebe7e2..7e55233 100644 --- a/gdb/mem-break.c +++ b/gdb/mem-break.c @@ -1,24 +1,24 @@ -/* Simulate breakpoints by patching locations in the target system. - Copyright (C) 1990 Free Software Foundation, Inc. +/* Simulate breakpoints by patching locations in the target system, for GDB. + Copyright 1990, 1991 Free Software Foundation, Inc. + Contributed by Cygnus Support. Written by John Gilmore. This file is part of GDB. -GDB is free software; you can redistribute it and/or modify +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 1, or (at your option) -any later version. +the Free Software Foundation; either version 2 of the License, or +(at your option) any later version. -GDB is distributed in the hope that it will be useful, +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 GDB; see the file COPYING. If not, write to -the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ +along with this program; if not, write to the Free Software +Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include "defs.h" -#include "param.h" #ifdef BREAKPOINT /* This file is only useful if BREAKPOINT is set. If not, we punt. */ @@ -72,86 +72,8 @@ memory_remove_breakpoint (addr, contents_cache) } -#if 0 -/* This should move back into breakpoint.c, sad to say. Encapsulate - sizeof (BREAKPOINT) by export it as an int from mem-break.c. */ +int memory_breakpoint_size = sizeof (break_insn); -/* Like target_read_memory() but if breakpoints are inserted, return - the shadow contents instead of the breakpoints themselves. */ -int -read_memory_nobpt (memaddr, myaddr, len) - CORE_ADDR memaddr; - char *myaddr; - unsigned len; -{ - int status; - struct breakpoint *b; - ALL_BREAKPOINTS (b) - { - if (b->address == NULL || !b->inserted) - continue; - else if (b->address + sizeof (break_insn) <= memaddr) - /* The breakpoint is entirely before the chunk of memory - we are reading. */ - continue; - else if (b->address >= memaddr + len) - /* The breakpoint is entirely after the chunk of memory we - are reading. */ - continue; - else - { - /* Copy the breakpoint from the shadow contents, and recurse - for the things before and after. */ - - /* Addresses and length of the part of the breakpoint that - we need to copy. */ - CORE_ADDR membpt = b->address; - unsigned int bptlen = sizeof (break_insn); - /* Offset within shadow_contents. */ - int bptoffset = 0; - - if (membpt < memaddr) - { - /* Only copy the second part of the breakpoint. */ - bptlen -= memaddr - membpt; - bptoffset = memaddr - membpt; - membpt = memaddr; - } - - if (membpt + bptlen > memaddr + len) - { - /* Only copy the first part of the breakpoint. */ - bptlen -= (membpt + bptlen) - (memaddr + len); - } - - bcopy (b->shadow_contents + bptoffset, - myaddr + membpt - memaddr, bptlen); - - if (membpt > memaddr) - { - /* Copy the section of memory before the breakpoint. */ - status = read_memory_nobpt (memaddr, myaddr, membpt - memaddr); - if (status != 0) - return status; - } - - if (membpt + bptlen < memaddr + len) - { - /* Copy the section of memory after the breakpoint. */ - status = read_memory_nobpt - (membpt + bptlen, - myaddr + membpt + bptlen - memaddr, - memaddr + len - (membpt + bptlen)); - if (status != 0) - return status; - } - return 0; - } - } - /* Nothing overlaps. Just call read_memory_noerr. */ - return target_read_memory (memaddr, myaddr, len); -} -#endif /* 0 */ #else /* BREAKPOINT */ @@ -175,4 +97,6 @@ memory_remove_breakpoint (addr, contents_cache) return 0; /* lint */ } +int memory_breakpoint_size = -1; + #endif /* BREAKPOINT */ |