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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2014 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Felipe Pena <felipe@php.net> |
| Authors: Joe Watkins <joe.watkins@live.co.uk> |
| Authors: Bob Weinand <bwoebi@php.net> |
+----------------------------------------------------------------------+
*/
#include "zend.h"
#include "phpdbg.h"
phpdbg_btree phpdbg_memory_tree;
int mprotect(void *addr, size_t size, int protection) {
int var;
//printf("Set protection of %p to %s\n", addr, protection == (PROT_READ | PROT_WRITE) ? "rw": "r-");
return (int)VirtualProtect(addr, size, protection == (PROT_READ | PROT_WRITE) ? PAGE_READWRITE : PAGE_READONLY, &var);
}
size_t virtual_size(void *ptr) {
return (size_t)phpdbg_btree_find(&phpdbg_memory_tree, (zend_ulong)ptr)->ptr;
}
void *virtual_malloc(size_t size) {
size_t real_size = phpdbg_get_total_page_size(NULL, size);
void *addr = VirtualAlloc(NULL, real_size, MEM_COMMIT, PAGE_READWRITE);
phpdbg_btree_insert(&phpdbg_memory_tree, (zend_ulong)addr, (void *)real_size);
return addr;
}
void virtual_free(void *ptr) {
phpdbg_watch_efree(ptr);
VirtualFree(ptr, virtual_size(ptr), MEM_RELEASE);
phpdbg_btree_delete(&phpdbg_memory_tree, (zend_ulong)ptr);
}
void *virtual_realloc(void *ptr, size_t size) {
void *ret;
size_t original_size = virtual_size(ptr);
if (original_size >= size) {
return ptr;
}
ret = virtual_malloc(size);
memcpy(ret, ptr, original_size);
virtual_free(ptr);
return ret;
}
void phpdbg_win_set_mm_heap(zend_mm_heap *heap) {
phpdbg_btree_init(&phpdbg_memory_tree, sizeof(void *) * 8);
heap->_free = virtual_free;
heap->_realloc = virtual_realloc;
heap->_malloc = virtual_malloc;
}
int phpdbg_exception_handler_win32(EXCEPTION_POINTERS *xp) {
EXCEPTION_RECORD *xr = xp->ExceptionRecord;
CONTEXT *xc = xp->ContextRecord;
if(xr->ExceptionCode == EXCEPTION_ACCESS_VIOLATION) {
TSRMLS_FETCH();
//printf("Watchpoint hit at: %p\n", xr->ExceptionInformation[1]);
if (phpdbg_watchpoint_segfault_handler((void *)xr->ExceptionInformation[1] TSRMLS_CC) == SUCCESS) {
return EXCEPTION_CONTINUE_EXECUTION;
}
}
return EXCEPTION_CONTINUE_SEARCH;
}
|
