/usr/include/emu/emu_memory.h is in libemu-dev 0.2.0+git20120122-1.2+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* libemu
*
* - x86 shellcode emulation -
*
*
* Copyright (C) 2007 Paul Baecher & Markus Koetter
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*
* contact nepenthesdev@users.sourceforge.net
*
*******************************************************************************/
#ifndef HAVE_EMU_MEMORY_H
#define HAVE_EMU_MEMORY_H
#include <inttypes.h>
#include <sys/types.h>
enum emu_segment {
s_cs = 0, s_ss, s_ds, s_es, s_fs, s_gs
};
struct emu;
struct emu_memory;
struct emu_string;
struct emu_memory *emu_memory_new(struct emu *e);
void emu_memory_clear(struct emu_memory *em);
void emu_memory_free(struct emu_memory *em);
/* read access, these functions return -1 on error */
int32_t emu_memory_read_byte(struct emu_memory *m, uint32_t addr, uint8_t *byte);
int32_t emu_memory_read_word(struct emu_memory *m, uint32_t addr, uint16_t *word);
int32_t emu_memory_read_dword(struct emu_memory *m, uint32_t addr, uint32_t *dword);
int32_t emu_memory_read_block(struct emu_memory *m, uint32_t addr, void *dest, size_t len);
int32_t emu_memory_read_string(struct emu_memory *m, uint32_t addr, struct emu_string *s, uint32_t maxsize);
/* write access */
int32_t emu_memory_write_byte(struct emu_memory *m, uint32_t addr, uint8_t byte);
int32_t emu_memory_write_word(struct emu_memory *m, uint32_t addr, uint16_t word);
int32_t emu_memory_write_dword(struct emu_memory *m, uint32_t addr, uint32_t dword);
int32_t emu_memory_write_block(struct emu_memory *m, uint32_t addr, const void *src, size_t len);
/* segment selection */
void emu_memory_segment_select(struct emu_memory *m, enum emu_segment s);
enum emu_segment emu_memory_segment_get(struct emu_memory *m);
/* alloc */
int32_t emu_memory_alloc(struct emu_memory *m, uint32_t *addr, size_t len);
/*int32_t emu_memory_alloc_at(struct emu_memory *m, uint32_t addr, size_t len);*/
/* information */
uint32_t emu_memory_get_usage(struct emu_memory *m);
void emu_memory_mode_ro(struct emu_memory *m);
void emu_memory_mode_rw(struct emu_memory *m);
#define MEM_BYTE_READ(cpu_p, addr, data_p) \
{ int32_t ret = emu_memory_read_byte((cpu_p)->mem, addr, data_p); \
if( ret != 0 ) \
return ret; }
#define MEM_BYTE_WRITE(cpu_p, addr, data) \
{ int32_t ret = emu_memory_write_byte((cpu_p)->mem, addr, data); \
if( ret != 0 ) \
return ret; }
#define MEM_WORD_READ(cpu_p, addr, data_p) \
{ int32_t ret = emu_memory_read_word((cpu_p)->mem, addr, data_p); \
if( ret != 0 ) \
return ret; }
#define MEM_WORD_WRITE(cpu_p, addr, data) \
{ uint16_t val; \
bcopy(&(data), &val, 2); \
int32_t ret = emu_memory_write_word((cpu_p)->mem, addr, val); \
if( ret != 0 ) \
return ret; }
#define MEM_DWORD_READ(cpu_p, addr, data_p) \
{ int32_t ret = emu_memory_read_dword((cpu_p)->mem, addr, data_p); \
if( ret != 0 ) \
return ret; }
#define MEM_DWORD_WRITE(cpu_p, addr, data) \
{ uint32_t val; \
bcopy(&(data), &val, 4); \
int32_t ret = emu_memory_write_dword((cpu_p)->mem, addr, val); \
if( ret != 0 ) \
return ret; }
#endif // HAVE_EMU_MEMORY_H
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