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Diffstat (limited to 'src/target/breakpoints.c')
| -rw-r--r-- | src/target/breakpoints.c | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/src/target/breakpoints.c b/src/target/breakpoints.c new file mode 100644 index 00000000..efba25c9 --- /dev/null +++ b/src/target/breakpoints.c @@ -0,0 +1,219 @@ +/*************************************************************************** + * Copyright (C) 2005 by Dominic Rath * + * Dominic.Rath@gmx.de * + * * + * 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. * + ***************************************************************************/ +#include "config.h" + +#include <stdlib.h> + +#include "binarybuffer.h" +#include "target.h" +#include "log.h" +#include "types.h" + +#include "breakpoints.h" + +char *breakpoint_type_strings[] = +{ + "hardware", + "software" +}; + +char *watchpoint_rw_strings[] = +{ + "read", + "write", + "access" +}; + +int breakpoint_add(target_t *target, u32 address, u32 length, enum breakpoint_type type) +{ + breakpoint_t *breakpoint = target->breakpoints; + breakpoint_t **breakpoint_p = &target->breakpoints; + int retval; + + while (breakpoint) + { + if (breakpoint->address == address) + return ERROR_OK; + breakpoint_p = &breakpoint->next; + breakpoint = breakpoint->next; + } + + if ((retval = target->type->add_breakpoint(target, address, length, type)) != ERROR_OK) + { + switch (retval) + { + case ERROR_TARGET_RESOURCE_NOT_AVAILABLE: + INFO("can't add %s breakpoint, resource not available", breakpoint_type_strings[type]); + return retval; + break; + case ERROR_TARGET_NOT_HALTED: + INFO("can't add breakpoint while target is running"); + return retval; + break; + default: + ERROR("unknown error"); + exit(-1); + break; + } + } + + (*breakpoint_p) = malloc(sizeof(breakpoint_t)); + (*breakpoint_p)->address = address; + (*breakpoint_p)->length = length; + (*breakpoint_p)->type = type; + (*breakpoint_p)->set = 0; + (*breakpoint_p)->orig_instr = malloc(CEIL(length, 8)); + (*breakpoint_p)->next = NULL; + + DEBUG("added %s breakpoint at 0x%8.8x of length 0x%8.8x", breakpoint_type_strings[type], address, length); + + return ERROR_OK; +} + +int breakpoint_remove(target_t *target, u32 address) +{ + breakpoint_t *breakpoint = target->breakpoints; + breakpoint_t **breakpoint_p = &target->breakpoints; + int retval; + + while (breakpoint) + { + if (breakpoint->address == address) + break; + breakpoint_p = &breakpoint->next; + breakpoint = breakpoint->next; + } + + if (breakpoint) + { + if ((retval = target->type->remove_breakpoint(target, breakpoint)) != ERROR_OK) + { + switch (retval) + { + case ERROR_TARGET_NOT_HALTED: + INFO("can't remove breakpoint while target is running"); + return retval; + break; + default: + ERROR("unknown error"); + exit(-1); + break; + } + } + (*breakpoint_p) = breakpoint->next; + free(breakpoint->orig_instr); + free(breakpoint); + } + else + { + ERROR("no breakpoint at address 0x%8.8x found", address); + } + + return ERROR_OK; +} + +breakpoint_t* breakpoint_find(target_t *target, u32 address) +{ + breakpoint_t *breakpoint = target->breakpoints; + + while (breakpoint) + { + if (breakpoint->address == address) + return breakpoint; + breakpoint = breakpoint->next; + } + + return NULL; +} + +int watchpoint_add(target_t *target, u32 address, u32 length, enum watchpoint_rw rw, u32 value, u32 mask) +{ + watchpoint_t *watchpoint = target->watchpoints; + watchpoint_t **watchpoint_p = &target->watchpoints; + int retval; + + while (watchpoint) + { + if (watchpoint->address == address) + return ERROR_OK; + watchpoint_p = &watchpoint->next; + watchpoint = watchpoint->next; + } + + if ((retval = target->type->add_watchpoint(target, address, length, rw)) != ERROR_OK) + { + switch (retval) + { + case ERROR_TARGET_RESOURCE_NOT_AVAILABLE: + INFO("can't add %s watchpoint, resource not available", watchpoint_rw_strings[rw]); + return retval; + break; + default: + ERROR("unknown error"); + exit(-1); + break; + } + } + + (*watchpoint_p) = malloc(sizeof(watchpoint_t)); + (*watchpoint_p)->address = address; + (*watchpoint_p)->length = length; + (*watchpoint_p)->value = value; + (*watchpoint_p)->mask = mask; + (*watchpoint_p)->rw = rw; + (*watchpoint_p)->set = 0; + (*watchpoint_p)->next = NULL; + + DEBUG("added %s watchpoint at 0x%8.8x of length 0x%8.8x", watchpoint_rw_strings[rw], address, length); + + return ERROR_OK; +} + +int watchpoint_remove(target_t *target, u32 address) +{ + watchpoint_t *watchpoint = target->watchpoints; + watchpoint_t **watchpoint_p = &target->watchpoints; + int retval; + + while (watchpoint) + { + if (watchpoint->address == address) + break; + watchpoint_p = &watchpoint->next; + watchpoint = watchpoint->next; + } + + if (watchpoint) + { + if ((retval = target->type->remove_watchpoint(target, watchpoint)) != ERROR_OK) + { + ERROR("BUG: can't remove watchpoint"); + exit(-1); + } + (*watchpoint_p) = watchpoint->next; + free(watchpoint); + } + else + { + ERROR("no watchpoint at address 0x%8.8x found", address); + } + + return ERROR_OK; +} |