#include <stdlib.h>
#include <string.h>
+#ifdef HAVE_ELF_H
+#include <elf.h>
+#endif
#include "image.h"
#include "fileio.h"
#include "target.h"
+/* convert ELF header field to host endianness */
+#define field16(elf,field)\
+ ((elf->endianness==ELFDATA2LSB)? \
+ le_to_h_u16((u8*)&field):be_to_h_u16((u8*)&field))
+
+#define field32(elf,field)\
+ ((elf->endianness==ELFDATA2LSB)? \
+ le_to_h_u32((u8*)&field):be_to_h_u32((u8*)&field))
+
+static int autodetect_image_type(image_t *image, char *url)
+{
+ int retval;
+ fileio_t fileio;
+ u32 read_bytes;
+ u8 buffer[9];
+
+ /* read the first 4 bytes of image */
+ if ((retval = fileio_open(&fileio, url, FILEIO_READ, FILEIO_BINARY)) != ERROR_OK)
+ {
+ snprintf(image->error_str, IMAGE_MAX_ERROR_STRING, "cannot open image: %s", fileio.error_str);
+ ERROR(image->error_str);
+ return retval;
+ }
+ if ((retval = fileio_read(&fileio, 9, buffer, &read_bytes)) != ERROR_OK)
+ {
+ snprintf(image->error_str, IMAGE_MAX_ERROR_STRING, "cannot read image header: %s", fileio.error_str);
+ ERROR(image->error_str);
+ return ERROR_FILEIO_OPERATION_FAILED;
+ }
+ if (read_bytes != 9)
+ {
+ snprintf(image->error_str, IMAGE_MAX_ERROR_STRING, "cannot read image, only partially read");
+ ERROR(image->error_str);
+ return ERROR_FILEIO_OPERATION_FAILED;
+ }
+ fileio_close(&fileio);
+
+ /* check header against known signatures */
+ if (strncmp((char*)buffer,ELFMAG,SELFMAG)==0)
+ {
+ DEBUG("ELF image detected.");
+ image->type = IMAGE_ELF;
+ }
+ else if ((buffer[0]==':') /* record start byte */
+ &&(isxdigit(buffer[1]))
+ &&(isxdigit(buffer[2]))
+ &&(isxdigit(buffer[3]))
+ &&(isxdigit(buffer[4]))
+ &&(isxdigit(buffer[5]))
+ &&(isxdigit(buffer[6]))
+ &&(buffer[7]=='0') /* record type : 00 -> 05 */
+ &&(buffer[8]>='0')&&(buffer[8]<'6'))
+ {
+ DEBUG("IHEX image detected.");
+ image->type = IMAGE_IHEX;
+ }
+ else
+ {
+ image->type = IMAGE_BINARY;
+ }
+
+ return ERROR_OK;
+}
+
+int identify_image_type(image_t *image, char *type_string, char *url)
+{
+ if (type_string)
+ {
+ if (!strcmp(type_string, "bin"))
+ {
+ image->type = IMAGE_BINARY;
+ }
+ else if (!strcmp(type_string, "ihex"))
+ {
+ image->type = IMAGE_IHEX;
+ }
+ else if (!strcmp(type_string, "elf"))
+ {
+ image->type = IMAGE_ELF;
+ }
+ else if (!strcmp(type_string, "mem"))
+ {
+ image->type = IMAGE_MEMORY;
+ }
+ else
+ {
+ return ERROR_IMAGE_TYPE_UNKNOWN;
+ }
+ }
+ else
+ {
+ return autodetect_image_type(image, url);
+ }
+
+ return ERROR_OK;
+}
+
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 = image->base_address;
- char *buffer = malloc(ihex->raw_size);
- u32 cooked_bytes = 0x0;
+ u32 full_address = 0x0;
+ char *buffer = malloc(fileio->size);
+ u32 cooked_bytes;
+ int i;
- ihex->raw_size = fileio->size;
- ihex->buffer = malloc(ihex->raw_size >> 1);
+ /* 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];
- if ((retval = fileio_read(fileio, ihex->raw_size, (u8*)buffer, &raw_bytes_read)) != ERROR_OK)
+ 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 != ihex->raw_size)
+ if (raw_bytes_read != fileio->size)
{
free(buffer);
ERROR("failed buffering complete IHEX file, only partially read");
return ERROR_FILEIO_OPERATION_FAILED;
}
-
- image->size = 0x0;
+
+ ihex->buffer = malloc(fileio->size >> 1);
raw_bytes = 0x0;
+ cooked_bytes = 0x0;
+ image->num_sections = 0;
+ section[image->num_sections].private = &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;
}
raw_bytes += 9;
- if (record_type == 0)
+ if (record_type == 0) /* Data Record */
{
if ((full_address & 0xffff) != address)
{
- free(buffer);
- ERROR("can't handle non-linear IHEX file");
- return ERROR_IMAGE_FORMAT_ERROR;
+ /* 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[image->num_sections].private = &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)
+ else if (record_type == 1) /* End of File Record */
{
+ /* finish the current section */
+ image->num_sections++;
+
+ /* copy section information */
+ image->sections = malloc(sizeof(image_section_t) * image->num_sections);
+ for (i = 0; i < image->num_sections; i++)
+ {
+ image->sections[i].private = section[i].private;
+ 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);
- image->size = cooked_bytes;
return ERROR_OK;
}
- else if (record_type == 4)
+ else if (record_type == 4) /* Extended Linear Address Record */
{
u16 upper_address;
if ((full_address >> 16) != upper_address)
{
- free(buffer);
- ERROR("can't handle non-linear IHEX file");
- return ERROR_IMAGE_FORMAT_ERROR;
+ /* 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[image->num_sections].private = &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)
+ else if (record_type == 5) /* Start Linear Address Record */
{
u32 start_address;
return ERROR_IMAGE_FORMAT_ERROR;
}
-int image_open(image_t *image, void *source, enum fileio_access access)
+int image_elf_read_headers(image_t *image)
+{
+ image_elf_t *elf = image->type_private;
+ u32 read_bytes;
+ u32 i,j;
+ int retval;
+
+ elf->header = malloc(sizeof(Elf32_Ehdr));
+
+ if ((retval = fileio_read(&elf->fileio, sizeof(Elf32_Ehdr), (u8*)elf->header, &read_bytes)) != ERROR_OK)
+ {
+ ERROR("cannot read ELF file header, read failed");
+ return ERROR_FILEIO_OPERATION_FAILED;
+ }
+ if (read_bytes != sizeof(Elf32_Ehdr))
+ {
+ ERROR("cannot read ELF file header, only partially read");
+ return ERROR_FILEIO_OPERATION_FAILED;
+ }
+
+ if (strncmp((char*)elf->header->e_ident,ELFMAG,SELFMAG)!=0)
+ {
+ ERROR("invalid ELF file, bad magic number");
+ return ERROR_IMAGE_FORMAT_ERROR;
+ }
+ if (elf->header->e_ident[EI_CLASS]!=ELFCLASS32)
+ {
+ ERROR("invalid ELF file, only 32bits files are supported");
+ return ERROR_IMAGE_FORMAT_ERROR;
+ }
+
+
+ elf->endianness = elf->header->e_ident[EI_DATA];
+ if ((elf->endianness!=ELFDATA2LSB)
+ &&(elf->endianness!=ELFDATA2MSB))
+ {
+ ERROR("invalid ELF file, unknown endianess setting");
+ return ERROR_IMAGE_FORMAT_ERROR;
+ }
+
+ elf->segment_count = field16(elf,elf->header->e_phnum);
+ if (elf->segment_count==0)
+ {
+ ERROR("invalid ELF file, no program headers");
+ return ERROR_IMAGE_FORMAT_ERROR;
+ }
+
+ elf->segments = malloc(elf->segment_count*sizeof(Elf32_Phdr));
+
+ if ((retval = fileio_read(&elf->fileio, elf->segment_count*sizeof(Elf32_Phdr), (u8*)elf->segments, &read_bytes)) != ERROR_OK)
+ {
+ ERROR("cannot read ELF segment headers, read failed");
+ return retval;
+ }
+ if (read_bytes != elf->segment_count*sizeof(Elf32_Phdr))
+ {
+ ERROR("cannot read ELF segment headers, only partially read");
+ return ERROR_FILEIO_OPERATION_FAILED;
+ }
+
+ /* count useful segments (loadable) */
+ image->num_sections = 0;
+ for (i=0;i<elf->segment_count;i++)
+ if (field32(elf,elf->segments[i].p_type) == PT_LOAD)
+ image->num_sections++;
+ /* alloc and fill sections array with loadable segments */
+ image->sections = malloc(image->num_sections * sizeof(image_section_t));
+ for (i=0,j=0;i<elf->segment_count;i++)
+ {
+ if (field32(elf,elf->segments[i].p_type) == PT_LOAD)
+ {
+ image->sections[j].size = field32(elf,elf->segments[i].p_memsz);
+ image->sections[j].base_address = field32(elf,elf->segments[i].p_vaddr);
+ image->sections[j].private = &elf->segments[i];
+ image->sections[j].flags = field32(elf,elf->segments[i].p_flags);
+ j++;
+ }
+ }
+
+ image->start_address_set = 1;
+ image->start_address = field32(elf,elf->header->e_entry);
+
+ return ERROR_OK;
+}
+
+int image_elf_read_section(image_t *image, int section, u32 offset, u32 size, u8 *buffer, u32 *size_read)
+{
+ image_elf_t *elf = image->type_private;
+ Elf32_Phdr *segment = (Elf32_Phdr *)image->sections[section].private;
+ u32 read_size,really_read;
+ int retval;
+
+ *size_read = 0;
+
+ DEBUG("load segment %d at 0x%x (sz=0x%x)",section,offset,size);
+
+ /* read initialized data in current segment if any */
+ if (offset<field32(elf,segment->p_filesz))
+ {
+ /* maximal size present in file for the current segment */
+ read_size = MIN(size, field32(elf,segment->p_filesz)-offset);
+ DEBUG("read elf: size = 0x%x at 0x%x",read_size,
+ field32(elf,segment->p_offset)+offset);
+ /* read initialized area of the segment */
+ if ((retval = fileio_seek(&elf->fileio, field32(elf,segment->p_offset)+offset)) != ERROR_OK)
+ {
+ ERROR("cannot find ELF segment content, seek failed");
+ return retval;
+ }
+ if ((retval = fileio_read(&elf->fileio, read_size, buffer, &really_read)) != ERROR_OK)
+ {
+ ERROR("cannot read ELF segment content, read failed");
+ return retval;
+ }
+ buffer += read_size;
+ size -= read_size;
+ offset += read_size;
+ *size_read += read_size;
+ /* need more data ? */
+ if (!size)
+ return ERROR_OK;
+ }
+ /* if there is remaining zeroed area in current segment */
+ if (offset<field32(elf,segment->p_memsz))
+ {
+ /* fill zeroed part (BSS) of the segment */
+ read_size = MIN(size, field32(elf,segment->p_memsz)-offset);
+ DEBUG("zero fill: size = 0x%x",read_size);
+ memset(buffer,0,read_size);
+ *size_read += read_size;
+ }
+
+ return ERROR_OK;
+}
+
+int image_open(image_t *image, char *url, char *type_string)
{
int retval = ERROR_OK;
+ if ((retval = identify_image_type(image, type_string, url)) != ERROR_OK)
+ {
+ return retval;
+ }
+
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)
+ if ((retval = fileio_open(&image_binary->fileio, url, FILEIO_READ, FILEIO_BINARY)) != ERROR_OK)
{
strncpy(image->error_str, image_binary->fileio.error_str, IMAGE_MAX_ERROR_STRING);
ERROR(image->error_str);
return retval;
}
- if (access == FILEIO_WRITE)
- image->size = 0;
- else
- image->size = image_binary->fileio.size;
+ 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));
return retval;
}
- image_ihex->position = 0;
- image_ihex->raw_size = image_ihex->fileio.size;
-
if ((retval = image_ihex_buffer_complete(image)) != ERROR_OK)
{
snprintf(image->error_str, IMAGE_MAX_ERROR_STRING,
return retval;
}
}
+ else if (image->type == IMAGE_ELF)
+ {
+ image_elf_t *image_elf;
+
+ image_elf = image->type_private = malloc(sizeof(image_elf_t));
+
+ if ((retval = fileio_open(&image_elf->fileio, url, FILEIO_READ, FILEIO_BINARY)) != ERROR_OK)
+ {
+ strncpy(image->error_str, image_elf->fileio.error_str, IMAGE_MAX_ERROR_STRING);
+ ERROR(image->error_str);
+ return retval;
+ }
+
+ if ((retval = image_elf_read_headers(image)) != ERROR_OK)
+ {
+ snprintf(image->error_str, IMAGE_MAX_ERROR_STRING,
+ "failed to read ELF headers, check daemon output for additional information");
+ ERROR(image->error_str);
+ fileio_close(&image_elf->fileio);
+ return retval;
+ }
+ }
else if (image->type == IMAGE_MEMORY)
{
image_memory_t *image_memory;
- target_t *target = source;
+
+ image->num_sections = 1;
+ image->sections = malloc(sizeof(image_section_t));
+ image->sections[0].base_address = 0x0;
+ image->sections[0].size = 0xffffffff;
+ image->sections[0].flags = 0;
image_memory = image->type_private = malloc(sizeof(image_memory_t));
- image_memory->target = target;
+ image_memory->target = get_target_by_num(strtoul(url, NULL, 0));;
+ image_memory->cache = NULL;
+ image_memory->cache_address = 0x0;
}
return retval;
};
-int image_read(image_t *image, u32 size, u8 *buffer, u32 *size_read)
+int image_read_section(image_t *image, int section, u32 offset, u32 size, u8 *buffer, u32 *size_read)
{
int retval;
{
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);
}
else if (image->type == IMAGE_IHEX)
{
- image_ihex_t *image_ihex = image->type_private;
-
- if ((image_ihex->position + size) > image->size)
- {
- /* don't read past the end of the file */
- size = (image->size - image_ihex->position);
- }
-
- memcpy(buffer, image_ihex->buffer + image_ihex->position, size);
- image_ihex->position += size;
+ memcpy(buffer, (u8*)image->sections[section].private + offset, size);
*size_read = size;
image->error_str[0] = '\0';
return ERROR_OK;
}
- else if (image->type == IMAGE_MEMORY)
+ else if (image->type == IMAGE_ELF)
{
- /* TODO: handle target memory pseudo image */
+ return image_elf_read_section(image, section, offset, size, buffer, size_read);
}
-
- return ERROR_OK;
-}
-
-int image_write(image_t *image, u32 size, u8 *buffer, u32 *size_written)
-{
- int retval = ERROR_FILEIO_OPERATION_NOT_SUPPORTED;
-
- if (image->type == IMAGE_BINARY)
+ else if (image->type == IMAGE_MEMORY)
{
- image_binary_t *image_binary = image->type_private;
+ image_memory_t *image_memory = image->type_private;
+ u32 address = image->sections[section].base_address + offset;
+
+ *size_read = 0;
- if ((retval = fileio_write(&image_binary->fileio, size, buffer, size_written)) != ERROR_OK)
+ while ((size - *size_read) > 0)
{
- strncpy(image->error_str, image_binary->fileio.error_str, IMAGE_MAX_ERROR_STRING);
- return retval;
+ u32 size_in_cache;
+
+ if (!image_memory->cache
+ || (address < image_memory->cache_address)
+ || (address >= (image_memory->cache_address + IMAGE_MEMORY_CACHE_SIZE)))
+ {
+ if (!image_memory->cache)
+ image_memory->cache = malloc(IMAGE_MEMORY_CACHE_SIZE);
+
+ if (target_read_buffer(image_memory->target, address & ~(IMAGE_MEMORY_CACHE_SIZE - 1),
+ IMAGE_MEMORY_CACHE_SIZE, image_memory->cache) != ERROR_OK)
+ {
+ free(image_memory->cache);
+ return ERROR_IMAGE_TEMPORARILY_UNAVAILABLE;
+ }
+ image_memory->cache_address = address & ~(IMAGE_MEMORY_CACHE_SIZE - 1);
+ }
+
+ size_in_cache = (image_memory->cache_address + IMAGE_MEMORY_CACHE_SIZE) - address;
+
+ memcpy(buffer + *size_read,
+ image_memory->cache + (address - image_memory->cache_address),
+ (size_in_cache > size) ? size : size_in_cache
+ );
+
+ *size_read += (size_in_cache > size) ? size : size_in_cache;
+ address += (size_in_cache > size) ? size : size_in_cache;
}
}
- else if (image->type == IMAGE_IHEX)
- {
- return ERROR_FILEIO_OPERATION_NOT_SUPPORTED;
- }
- else if (image->type == IMAGE_MEMORY)
- {
- /* TODO: handle target memory pseudo image */
- }
-
- if (retval != ERROR_OK)
- return retval;
-
- image->size += size;
return ERROR_OK;
}
if (image_ihex->buffer)
free(image_ihex->buffer);
}
- else if (image->type == IMAGE_MEMORY)
+ else if (image->type == IMAGE_ELF)
{
- /* do nothing for now */
- }
+ image_elf_t *image_elf = image->type_private;
+
+ fileio_close(&image_elf->fileio);
- free(image->type_private);
-
- return ERROR_OK;
-}
+ if (image_elf->header)
+ free(image_elf->header);
-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;
- }
+ if (image_elf->segments)
+ free(image_elf->segments);
}
- else
+ else if (image->type == IMAGE_MEMORY)
{
- *type = IMAGE_BINARY;
+ image_memory_t *image_memory = image->type_private;
+
+ if (image_memory->cache)
+ free(image_memory->cache);
}
+
+ if (image->type_private)
+ free(image->type_private);
+
+ if (image->sections)
+ free(image->sections);
return ERROR_OK;
}
Code Review / openocd.git / blobdiff