arm_memory_mmap.c File Reference

#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <sys/mman.h>
#include <errno.h>
#include <string.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <ctype.h>
#include <unistd.h>
#include "dbg_msg.h"
#include "jt_arm.h"
#include "jt_flash.h"
#include "arm_gdbstub.h"
#include "arm_memory_mmap.h"
#include "arm_sfa_cmdseq.h"

Defines

#define XML_PROLOG_STRING
#define XML_EPILOG_STRING "</memory-map>\n"
#define PAGE_BUF 512*2

Functions

int AllocMemMaps (int total_number_of_MemMaps)
struct memMapHead * searchMemMapHead (int num)
int AllocateMemMapEntrys (struct memMapHead *mh, int total_num)
struct memMap * searchMemMapEntry (struct memMapHead *mh, int num)
struct memMap * findMemMapOfAddr (uint32_t addr)
int updateMemMap (struct memMapHead *mh, int num, enum memMapType type, uint32_t busSize, uint32_t baseAddr, uint32_t length)
static int detectFlash (struct memMap *m)
static int defaultFlash (struct memMap *m)
int activateMemMap (int num)
void deactivateMemMap (void)
int printmemMapCB_info (int currMemMapHeadCnt, int currEntryCnt, struct context *contextSrc)

Variables

struct memMapContainer memMapContainer

Detailed Description

Example memory map layout

  _________________
 | memMapContainer |
 +-----------------+
 | numberOfMemMaps | = 2
 +-----------------+
 | firstMap        |
 +-----------------+
         |
         |
  _______Y_________        _________________ 
 |   memMapHead    |      |   memMapHead    |
 +-----------------+      +-----------------+
 |    nextHead     |----->|    nextHead     |--->(NULL)
 +-----------------+      +-----------------+
 | numberOfEntrys  | = 3  | numberOfEntrys  | = 0
 +-----------------+      +-----------------+
 |  firstMapEntry  |      |  firstMapEntry  |
 +-----------------+      +-----------------+
         |                        |
         |                        Y
         |                     (NULL)
         |
  _______Y_________      _________________      _________________
 |     memMap      |    |     memMap      |    |     memMap      |
 +-----------------+    +-----------------+    +-----------------+
 |     nextMap     |--->|     nextMap     |--->|     nextMap     |--->(NULL)
 +-----------------+    +-----------------+    +-----------------+

Define Documentation

#define XML_PROLOG_STRING

Referenced by activateMemMap().

#define XML_EPILOG_STRING "</memory-map>\n"

Referenced by activateMemMap().

#define PAGE_BUF 512*2

Referenced by activateMemMap().

Function Documentation

int AllocMemMaps ( int total_number_of_MemMaps )

  _________________
 | memMapContainer |
 +-----------------+
 | numberOfMemMaps | = 3
 +-----------------+
 | firstMap        |
 +-----------------+
         |
  _______Y_________      _________________      _________________
 |   memMapHead    |    |   memMapHead    |    |   memMapHead    |
 +-----------------+    +-----------------+    +-----------------+
 |    nextHead     |--->|    nextHead     |--->|    nextHead     |--->(NULL)
 +-----------------+    +-----------------+    +-----------------+

Allocate one (or more or non) memory MAP's and append it (or those) at our list.

Parameters:

total_number_of_MemMaps

request a maximum number of MAP's (memMapHeads)

Return values:

	0	on success
	!=0	error number

References memMapContainer::firstMap, memMapHead::nextHead, and memMapContainer::numberOfMemMaps.

Referenced by gdb_monitor_Rcmd().

struct memMapHead* searchMemMapHead ( int num ) [read]

collect memMapHead number num from list

Parameters:

num

number of map

Return values:

	NULL	map dosn't exist
	!=NULL	pointer to memMapHead

References memMapContainer::firstMap, memMapHead::nextHead, and memMapContainer::numberOfMemMaps.

Referenced by activateMemMap(), and gdb_monitor_Rcmd().

int AllocateMemMapEntrys	(	struct memMapHead *	mh,
		int	total_num
	)

  _________________
 |   memMapHead    |
 +-----------------+
 | numberOfEntrys  | = 3
 +-----------------+
 |  firstMapEntry  |
 +-----------------+
         |
  _______Y_________      _________________      _________________
 |     memMap      |    |     memMap      |    |     memMap      |
 +-----------------+    +-----------------+    +-----------------+
 |     nextMap     |--->|     nextMap     |--->|     nextMap     |--->(NULL)
 +-----------------+    +-----------------+    +-----------------+

Allocate one (or more or non) memory map entries and append it (or those) at our list.

Parameters:

	total_num	request a maximum number of memMap entries
	mh	pointer to head of MAP

Return values:

	0	OK
	EINVAL	if no head given
	ENOMEM	if out of memory

References memMapHead::firstMapEntry, memMap::nextMap, and memMapHead::numberOfEntrys.

Referenced by gdb_monitor_Rcmd().

struct memMap* searchMemMapEntry	(	struct memMapHead *	mh,
		int	num
	)			`[read]`

collect memMap entry number (num) of MAP memMapHead (mh) from list

Parameters:

	num	entry number of memMap
	mh	pointer to head of MAP

Return values:

	NULL	map entry dosn't exist
	!=NULL	pointer to memMap entry

References memMapHead::firstMapEntry, memMap::nextMap, and memMapHead::numberOfEntrys.

struct memMap* findMemMapOfAddr ( uint32_t addr ) [read]

search at our active MAP for an entry where the address is somewhere within this entry.

Parameters:

addr

address

Returns:: pointer to memMap entry or NULL

References memMapContainer::activeMap, memMap::baseAddr, memMapHead::firstMapEntry, memMap::length, memMap::nextMap, and memMapHead::numberOfEntrys.

Referenced by doCmdSequence(), gdb_monitor_Rcmd(), gdb_read_mem(), gdb_write_mem(), gdbLookupArmInstr(), gdbLookupThumbInstr(), and InsertBreakpoint().

int updateMemMap	(	struct memMapHead *	mh,
		int	num,
		enum memMapType	type,
		uint32_t	busSize,
		uint32_t	baseAddr,
		uint32_t	length
	)

update a single memMap entry

Parameters:

	mh	pointer to head of MAP
	num	number of entry (to update)
	type	type of memory
	busSize	bus size
	baseAddr	start adderss of memMap entry (at target)
	length	length of memory space (at target)

Returns:: 0 if OK or EINVAL if not

References memMapContainer::activeNumber, memMap::MemBufferType::Flash::algo, memMap::baseAddr, memMap::busSize, DBG_LEVEL_GDB_ARM_WARN, dbgPrintf(), memMapHead::firstMapEntry, memMap::MemBufferType::Flash, FLASH_ALGORITHEM_UNKNOWN, memMap::MemBufferType::Flash::infoString, memMap::length, memMap::memBufferType, MMAP_T_APPLICATION_FLASH, MMAP_T_FLASH, MMAP_T_UNUSED, memMap::nextMap, memMapHead::numberOfEntrys, memMap::MemBufferType::Flash::numberOfSectors, memMap::MemBufferType::Flash::sectorList, and memMap::type.

Referenced by gdb_monitor_Rcmd().

static int detectFlash ( struct memMap * m ) [static]

The memMap entry telling us something about here is a FLASH. But we need some more information about the FLASH-layout. Here we try to detect this info.

Parameters:

m

pointer to memMap entry

Return values: