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f94d66d7c5
openocd/src/target/image.c
drath f94d66d7c5 - reworked image handling to support multiple sections (tested with ihex file containing gaps) 
This checkin is still experimental, not recommended for general use



git-svn-id: svn://svn.berlios.de/openocd/trunk@159 b42882b7-edfa-0310-969c-e2dbd0fdcd60
2007-05-30 15:47:18 +00:00

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/***************************************************************************
* Copyright (C) 2007 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
* 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., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <string.h>
#include "image.h"
#include "types.h"
#include "replacements.h"
#include "log.h"
#include "fileio.h"
#include "target.h"
int image_ihex_buffer_complete(image_t *image)
{
image_ihex_t *ihex = image->type_private;
fileio_t *fileio = &ihex->fileio;
u32 raw_bytes_read, raw_bytes;
int retval;
u32 full_address = 0x0;
char *buffer = malloc(fileio->size);
u32 cooked_bytes;
int i;
/* we can't determine the number of sections that we'll have to create ahead of time,
* so we locally hold them until parsing is finished */
image_section_t section[IMAGE_MAX_SECTIONS];
u8 *section_pointer[IMAGE_MAX_SECTIONS];
if ((retval = fileio_read(fileio, fileio->size, (u8*)buffer, &raw_bytes_read)) != ERROR_OK)
{
free(buffer);
ERROR("failed buffering IHEX file, read failed");
return ERROR_FILEIO_OPERATION_FAILED;
}
if (raw_bytes_read != fileio->size)
{
free(buffer);
ERROR("failed buffering complete IHEX file, only partially read");
return ERROR_FILEIO_OPERATION_FAILED;
}
ihex->buffer = malloc(fileio->size >> 1);
raw_bytes = 0x0;
cooked_bytes = 0x0;
image->num_sections = 0;
section_pointer[image->num_sections] = &ihex->buffer[cooked_bytes];
section[image->num_sections].base_address = 0x0;
section[image->num_sections].size = 0x0;
section[image->num_sections].flags = 0;
while (raw_bytes < raw_bytes_read)
{
u32 count;
u32 address;
u32 record_type;
u32 checksum;
if (sscanf(&buffer[raw_bytes], ":%2x%4x%2x", &count, &address, &record_type) != 3)
{
return ERROR_IMAGE_FORMAT_ERROR;
}
raw_bytes += 9;
if (record_type == 0) /* Data Record */
{
if ((full_address & 0xffff) != address)
{
/* we encountered a nonconsecutive location, create a new section,
* unless the current section has zero size, in which case this specifies
* the current section's base address
*/
if (section[image->num_sections].size != 0)
{
image->num_sections++;
section[image->num_sections].size = 0x0;
section[image->num_sections].flags = 0;
section_pointer[image->num_sections] = &ihex->buffer[cooked_bytes];
}
section[image->num_sections].base_address =
(full_address & 0xffff0000) | address;
full_address = (full_address & 0xffff0000) | address;
}
while (count-- > 0)
{
sscanf(&buffer[raw_bytes], "%2hhx", &ihex->buffer[cooked_bytes]);
raw_bytes += 2;
cooked_bytes += 1;
section[image->num_sections].size += 1;
full_address++;
}
}
else if (record_type == 1) /* End of File Record */
{
/* finish the current section */
image->num_sections++;
/* copy section information */
ihex->section_pointer = malloc(sizeof(u8*) * image->num_sections);
image->sections = malloc(sizeof(image_section_t) * image->num_sections);
for (i = 0; i < image->num_sections; i++)
{
ihex->section_pointer[i] = section_pointer[i];
image->sections[i].base_address = section[i].base_address +
((image->base_address_set) ? image->base_address : 0);
image->sections[i].size = section[i].size;
image->sections[i].flags = section[i].flags;
}
free(buffer);
return ERROR_OK;
}
else if (record_type == 4) /* Extended Linear Address Record */
{
u16 upper_address;
sscanf(&buffer[raw_bytes], "%4hx", &upper_address);
raw_bytes += 4;
if ((full_address >> 16) != upper_address)
{
/* we encountered a nonconsecutive location, create a new section,
* unless the current section has zero size, in which case this specifies
* the current section's base address
*/
if (section[image->num_sections].size != 0)
{
image->num_sections++;
section[image->num_sections].size = 0x0;
section[image->num_sections].flags = 0;
section_pointer[image->num_sections] = &ihex->buffer[cooked_bytes];
}
section[image->num_sections].base_address =
(full_address & 0xffff) | (upper_address << 16);
full_address = (full_address & 0xffff) | (upper_address << 16);
}
}
else if (record_type == 5) /* Start Linear Address Record */
{
u32 start_address;
sscanf(&buffer[raw_bytes], "%8x", &start_address);
raw_bytes += 8;
image->start_address_set = 1;
image->start_address = be_to_h_u32((u8*)&start_address);
}
else
{
free(buffer);
ERROR("unhandled IHEX record type: %i", record_type);
return ERROR_IMAGE_FORMAT_ERROR;
}
sscanf(&buffer[raw_bytes], "%2x", &checksum);
raw_bytes += 2;
/* consume new-line character(s) */
if ((buffer[raw_bytes] == '\n') || (buffer[raw_bytes] == '\r'))
raw_bytes++;
if ((buffer[raw_bytes] == '\n') || (buffer[raw_bytes] == '\r'))
raw_bytes++;
}
free(buffer);
ERROR("premature end of IHEX file, no end-of-file record found");
return ERROR_IMAGE_FORMAT_ERROR;
}
int image_open(image_t *image, void *source, enum fileio_access access)
{
int retval = ERROR_OK;
if (image->type == IMAGE_BINARY)
{
image_binary_t *image_binary;
char *url = source;
image_binary = image->type_private = malloc(sizeof(image_binary_t));
if ((retval = fileio_open(&image_binary->fileio, url, access, FILEIO_BINARY)) != ERROR_OK)
{
strncpy(image->error_str, image_binary->fileio.error_str, IMAGE_MAX_ERROR_STRING);
ERROR(image->error_str);
return retval;
}
image->num_sections = 1;
image->sections = malloc(sizeof(image_section_t));
image->sections[0].base_address = 0x0;
image->sections[0].size = image_binary->fileio.size;
image->sections[0].flags = 0;
if (image->base_address_set == 1)
image->sections[0].base_address = image->base_address;
return ERROR_OK;
}
else if (image->type == IMAGE_IHEX)
{
image_ihex_t *image_ihex;
char *url = source;
if (access != FILEIO_READ)
{
snprintf(image->error_str, IMAGE_MAX_ERROR_STRING,
"can't open IHEX file for writing");
ERROR(image->error_str);
return ERROR_FILEIO_ACCESS_NOT_SUPPORTED;
}
image_ihex = image->type_private = malloc(sizeof(image_ihex_t));
if ((retval = fileio_open(&image_ihex->fileio, url, FILEIO_READ, FILEIO_TEXT)) != ERROR_OK)
{
strncpy(image->error_str, image_ihex->fileio.error_str, IMAGE_MAX_ERROR_STRING);
ERROR(image->error_str);
return retval;
}
if ((retval = image_ihex_buffer_complete(image)) != ERROR_OK)
{
snprintf(image->error_str, IMAGE_MAX_ERROR_STRING,
"failed buffering IHEX image, check daemon output for additional information");
ERROR(image->error_str);
fileio_close(&image_ihex->fileio);
return retval;
}
}
else if (image->type == IMAGE_MEMORY)
{
image_memory_t *image_memory;
target_t *target = source;
image_memory = image->type_private = malloc(sizeof(image_memory_t));
image_memory->target = target;
}
return retval;
};
int image_read_section(image_t *image, int section, u32 offset, u32 size, u8 *buffer, u32 *size_read)
{
int retval;
if (image->type == IMAGE_BINARY)
{
image_binary_t *image_binary = image->type_private;
/* only one section in a plain binary */
if (section != 0)
return ERROR_INVALID_ARGUMENTS;
if ((offset > image->sections[0].size) || (offset + size > image->sections[0].size))
return ERROR_INVALID_ARGUMENTS;
/* seek to offset */
if ((retval = fileio_seek(&image_binary->fileio, offset)) != ERROR_OK)
{
strncpy(image->error_str, image_binary->fileio.error_str, IMAGE_MAX_ERROR_STRING);
return retval;
}
/* return requested bytes */
if ((retval = fileio_read(&image_binary->fileio, size, buffer, size_read)) != ERROR_OK)
{
strncpy(image->error_str, image_binary->fileio.error_str, IMAGE_MAX_ERROR_STRING);
return retval;
}
}
else if (image->type == IMAGE_IHEX)
{
image_ihex_t *image_ihex = image->type_private;
memcpy(buffer, image_ihex->section_pointer[section] + offset, size);
*size_read = size;
image->error_str[0] = '\0';
return ERROR_OK;
}
else if (image->type == IMAGE_MEMORY)
{
/* TODO: handle target memory pseudo image */
}
return ERROR_OK;
}
int image_close(image_t *image)
{
if (image->type == IMAGE_BINARY)
{
image_binary_t *image_binary = image->type_private;
fileio_close(&image_binary->fileio);
}
else if (image->type == IMAGE_IHEX)
{
image_ihex_t *image_ihex = image->type_private;
fileio_close(&image_ihex->fileio);
if (image_ihex->section_pointer)
free(image_ihex->section_pointer);
if (image_ihex->buffer)
free(image_ihex->buffer);
}
else if (image->type == IMAGE_MEMORY)
{
/* do nothing for now */
}
if (image->type_private)
free(image->type_private);
if (image->sections)
free(image->sections);
return ERROR_OK;
}
int identify_image_type(image_type_t *type, char *type_string)
{
if (type_string)
{
if (!strcmp(type_string, "bin"))
{
*type = IMAGE_BINARY;
}
else if (!strcmp(type_string, "ihex"))
{
*type = IMAGE_IHEX;
}
else
{
return ERROR_IMAGE_TYPE_UNKNOWN;
}
}
else
{
*type = IMAGE_BINARY;
}
return ERROR_OK;
}
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