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/*****************************************************************************/
/* pemagination: a (virtual) tour into portable bits and executable bytes */
/* Copyright (C) 2013--2020 SysDeer Technologies, LLC */
/* Released under GPLv2 and GPLv3; see COPYING.PEMAGINE. */
/*****************************************************************************/
#include <psxtypes/psxtypes.h>
#include <pemagine/pemagine.h>
#include "pe_os.h"
struct ldr_entry_addr_ctx {
uintptr_t addr;
struct pe_ldr_tbl_entry * entry;
};
static int ldr_entry_addr_compare(
struct pe_ldr_tbl_entry * image_ldr_tbl_entry,
enum pe_callback_reason reason,
void * context)
{
uintptr_t base;
uintptr_t cap;
struct ldr_entry_addr_ctx * ctx;
switch (reason) {
case PE_CALLBACK_REASON_INIT:
case PE_CALLBACK_REASON_INFO:
case PE_CALLBACK_REASON_QUERY:
return 1;
case PE_CALLBACK_REASON_DONE:
return 0;
case PE_CALLBACK_REASON_ERROR:
return OS_STATUS_INTERNAL_ERROR;
case PE_CALLBACK_REASON_ITEM:
break;
}
ctx = (struct ldr_entry_addr_ctx *)context;
base = (uintptr_t)image_ldr_tbl_entry->dll_base;
cap = base + image_ldr_tbl_entry->size_of_image;
if ((ctx->addr >= base) && (ctx->addr < cap)) {
ctx->entry = image_ldr_tbl_entry;
return 0;
}
return 1;
}
struct pe_ldr_tbl_entry * pe_get_ldr_entry_from_addr(const void * addr)
{
struct ldr_entry_addr_ctx ctx = {(uintptr_t)addr,0};
if (pe_enum_modules_in_load_order(
ldr_entry_addr_compare,
&ctx))
return 0;
return ctx.entry;
}
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