mirror of
https://gitlab.rtems.org/rtems/rtos/rtems.git
synced 2026-08-26 04:18:29 +08:00
Chris Johns
3b0de038c7
The block logic uses realloc to resize memory used by libdebugger when creating a snapshot of threads. Thread registers take a reference to the block and if a realloc changes the base address any references are invalid. Add rebase handler support to blocks that is called when the block base changes and add a handler to thread register blocks to rebase a thread's registers. Exclude threads using both types of names they can have. This lets all names be reported in extra thread info packets. Closes #5635
82 lines
2.8 KiB
C
82 lines
2.8 KiB
C
/*
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* Copyright (c) 2016 Chris Johns <chrisj@rtems.org>.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <errno.h>
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#include <stdlib.h>
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#include "rtems-debugger-block.h"
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int rtems_debugger_block_create(rtems_debugger_block* block, size_t step,
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size_t size,
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rtems_debugger_block_rebase rebaser) {
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block->level = 0;
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block->step = step;
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block->count = step;
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block->size = size;
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block->rebaser = rebaser;
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block->block = calloc(block->count, block->size);
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if (block->block == NULL) {
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errno = ENOMEM;
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return -1;
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}
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return 0;
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}
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int rtems_debugger_block_destroy(rtems_debugger_block* block) {
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free(block->block);
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block->block = NULL;
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block->level = 0;
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block->count = 0;
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block->size = 0;
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return 0;
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}
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int rtems_debugger_block_resize(rtems_debugger_block* block) {
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if (block->level >= block->count) {
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block->count += block->step;
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void* new_block = realloc(block->block, block->count * block->size);
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if (new_block == NULL) {
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block->block = NULL;
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block->level = 0;
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block->count = 0;
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errno = ENOMEM;
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return -1;
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}
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if (block->block != new_block && block->rebaser != NULL) {
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block->rebaser(block->block, new_block);
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}
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block->block = new_block;
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}
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return 0;
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}
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void* rtems_debugger_block_transform(void* previous, void* new, void* addr) {
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uintptr_t previous_u = (uintptr_t)previous;
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uintptr_t new_u = (uintptr_t)new;
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uintptr_t addr_u = (uintptr_t)addr;
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return (void*)((addr_u - previous_u) + new_u);
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}
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