Transform 'u16' to 'uint16_t'
[fw/openocd] / src / target / image.c
index a457b567b450bcc5521b427c87202a901908c37c..f944cf1ddcc9a684848a3dc3930ce1ee04ada391 100644 (file)
@@ -2,6 +2,12 @@
  *   Copyright (C) 2007 by Dominic Rath                                    *
  *   Dominic.Rath@gmx.de                                                   *
  *                                                                         *
+ *   Copyright (C) 2007,2008 Ã˜yvind Harboe                                 *
+ *   oyvind.harboe@zylin.com                                               *
+ *                                                                         *
+ *   Copyright (C) 2008 by Spencer Oliver                                  *
+ *   spen@spen-soft.co.uk                                                  *
+ *                                                                         *
  *   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     *
 #include "config.h"
 #endif
 
-#include <stdlib.h>
-#include <string.h>
-#ifdef HAVE_ELF_H
-#include <elf.h>
-#endif
-
 #include "image.h"
-
-#include "types.h"
-#include "replacements.h"
+#include "target.h"
 #include "log.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 field16(elf,field)\
+       ((elf->endianness==ELFDATA2LSB)? \
+               le_to_h_u16((uint8_t*)&field):be_to_h_u16((uint8_t*)&field))
 
-#define field32(elf, field)\
-       ((elf->endianness == ELFDATA2LSB)? \
-               le_to_h_u32((u8*)&field) : be_to_h_u32((u8*)&field))
+#define field32(elf,field)\
+       ((elf->endianness==ELFDATA2LSB)? \
+               le_to_h_u32((uint8_t*)&field):be_to_h_u32((uint8_t*)&field))
 
 static int autodetect_image_type(image_t *image, char *url)
 {
        int retval;
        fileio_t fileio;
        u32 read_bytes;
-       u8 buffer[9];
+       uint8_t 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)
+       retval = fileio_read(&fileio, 9, buffer, &read_bytes);
+
+       if (retval==ERROR_OK)
        {
-               snprintf(image->error_str, IMAGE_MAX_ERROR_STRING, "cannot read image, only partially read");
-               ERROR(image->error_str);
-               return ERROR_FILEIO_OPERATION_FAILED;
+               if (read_bytes != 9)
+               {
+                       retval=ERROR_FILEIO_OPERATION_FAILED;
+               }
        }
        fileio_close(&fileio);
 
+       if (retval!=ERROR_OK)
+               return retval;
+
        /* check header against known signatures */
        if (strncmp((char*)buffer,ELFMAG,SELFMAG)==0)
        {
-               DEBUG("ELF image detected.");
+               LOG_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'))
+       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.");
+               LOG_DEBUG("IHEX image detected.");
                image->type = IMAGE_IHEX;
        }
        else if ((buffer[0] == 'S') /* record start byte */
@@ -98,7 +92,7 @@ static int autodetect_image_type(image_t *image, char *url)
                &&(isxdigit(buffer[3]))
                &&(buffer[1] >= '0') && (buffer[1] < '9'))
        {
-               DEBUG("S19 image detected.");
+               LOG_DEBUG("S19 image detected.");
                image->type = IMAGE_SRECORD;
        }
        else
@@ -109,7 +103,7 @@ static int autodetect_image_type(image_t *image, char *url)
        return ERROR_OK;
 }
 
-int identify_image_type(image_t *image, char *type_string, char *url)
+static int identify_image_type(image_t *image, char *type_string, char *url)
 {
        if (type_string)
        {
@@ -150,7 +144,7 @@ int identify_image_type(image_t *image, char *type_string, char *url)
        return ERROR_OK;
 }
 
-int image_ihex_buffer_complete(image_t *image)
+static int image_ihex_buffer_complete(image_t *image)
 {
        image_ihex_t *ihex = image->type_private;
        fileio_t *fileio = &ihex->fileio;
@@ -177,7 +171,7 @@ int image_ihex_buffer_complete(image_t *image)
                u32 address;
                u32 record_type;
                u32 checksum;
-               u8 cal_checksum = 0;
+               uint8_t cal_checksum = 0;
                u32 bytes_read = 0;
 
                if (sscanf(&lpszLine[bytes_read], ":%2x%4x%2x", &count, &address, &record_type) != 3)
@@ -186,10 +180,10 @@ int image_ihex_buffer_complete(image_t *image)
                }
                bytes_read += 9;
 
-               cal_checksum += (u8)count;
-               cal_checksum += (u8)(address >> 8);
-               cal_checksum += (u8)address;
-               cal_checksum += (u8)record_type;
+               cal_checksum += (uint8_t)count;
+               cal_checksum += (uint8_t)(address >> 8);
+               cal_checksum += (uint8_t)address;
+               cal_checksum += (uint8_t)record_type;
 
                if (record_type == 0) /* Data Record */
                {
@@ -213,8 +207,10 @@ int image_ihex_buffer_complete(image_t *image)
 
                        while (count-- > 0)
                        {
-                               sscanf(&lpszLine[bytes_read], "%2x", (u32*)&ihex->buffer[cooked_bytes]);
-                               cal_checksum += (u8)ihex->buffer[cooked_bytes];
+                               unsigned value;
+                               sscanf(&lpszLine[bytes_read], "%2x", &value);
+                               ihex->buffer[cooked_bytes] = (uint8_t)value;
+                               cal_checksum += (uint8_t)ihex->buffer[cooked_bytes];
                                bytes_read += 2;
                                cooked_bytes += 1;
                                section[image->num_sections].size += 1;
@@ -240,11 +236,11 @@ int image_ihex_buffer_complete(image_t *image)
                }
                else if (record_type == 2) /* Linear Address Record */
                {
-                       u16 upper_address;
+                       uint16_t upper_address;
 
                        sscanf(&lpszLine[bytes_read], "%4hx", &upper_address);
-                       cal_checksum += (u8)(upper_address >> 8);
-                       cal_checksum += (u8)upper_address;
+                       cal_checksum += (uint8_t)(upper_address >> 8);
+                       cal_checksum += (uint8_t)upper_address;
                        bytes_read += 4;
 
                        if ((full_address >> 4) != upper_address)
@@ -274,17 +270,17 @@ int image_ihex_buffer_complete(image_t *image)
                        while (count-- > 0)
                        {
                                sscanf(&lpszLine[bytes_read], "%2x", &dummy);
-                               cal_checksum += (u8)dummy;
+                               cal_checksum += (uint8_t)dummy;
                                bytes_read += 2;
                        }
                }
                else if (record_type == 4) /* Extended Linear Address Record */
                {
-                       u16 upper_address;
+                       uint16_t upper_address;
 
                        sscanf(&lpszLine[bytes_read], "%4hx", &upper_address);
-                       cal_checksum += (u8)(upper_address >> 8);
-                       cal_checksum += (u8)upper_address;
+                       cal_checksum += (uint8_t)(upper_address >> 8);
+                       cal_checksum += (uint8_t)upper_address;
                        bytes_read += 4;
 
                        if ((full_address >> 16) != upper_address)
@@ -310,37 +306,37 @@ int image_ihex_buffer_complete(image_t *image)
                        u32 start_address;
 
                        sscanf(&lpszLine[bytes_read], "%8x", &start_address);
-                       cal_checksum += (u8)(start_address >> 24);
-                       cal_checksum += (u8)(start_address >> 16);
-                       cal_checksum += (u8)(start_address >> 8);
-                       cal_checksum += (u8)start_address;
+                       cal_checksum += (uint8_t)(start_address >> 24);
+                       cal_checksum += (uint8_t)(start_address >> 16);
+                       cal_checksum += (uint8_t)(start_address >> 8);
+                       cal_checksum += (uint8_t)start_address;
                        bytes_read += 8;
 
                        image->start_address_set = 1;
-                       image->start_address = be_to_h_u32((u8*)&start_address);
+                       image->start_address = be_to_h_u32((uint8_t*)&start_address);
                }
                else
                {
-                       ERROR("unhandled IHEX record type: %i", record_type);
+                       LOG_ERROR("unhandled IHEX record type: %i", record_type);
                        return ERROR_IMAGE_FORMAT_ERROR;
                }
 
                sscanf(&lpszLine[bytes_read], "%2x", &checksum);
                bytes_read += 2;
 
-               if ((u8)checksum != (u8)(~cal_checksum + 1))
+               if ((uint8_t)checksum != (uint8_t)(~cal_checksum + 1))
                {
                        /* checksum failed */
-                       ERROR("incorrect record checksum found in IHEX file");
+                       LOG_ERROR("incorrect record checksum found in IHEX file");
                        return ERROR_IMAGE_CHECKSUM;
                }
        }
 
-       ERROR("premature end of IHEX file, no end-of-file record found");
+       LOG_ERROR("premature end of IHEX file, no end-of-file record found");
        return ERROR_IMAGE_FORMAT_ERROR;
 }
 
-int image_elf_read_headers(image_t *image)
+static int image_elf_read_headers(image_t *image)
 {
        image_elf_t *elf = image->type_private;
        u32 read_bytes;
@@ -349,109 +345,125 @@ int image_elf_read_headers(image_t *image)
 
        elf->header = malloc(sizeof(Elf32_Ehdr));
 
-       if ((retval = fileio_read(&elf->fileio, sizeof(Elf32_Ehdr), (u8*)elf->header, &read_bytes)) != ERROR_OK)
+       if(elf->header == NULL)
        {
-               ERROR("cannot read ELF file header, read failed");
+               LOG_ERROR("insufficient memory to perform operation ");
+               return ERROR_FILEIO_OPERATION_FAILED;
+       }
+
+       if ((retval = fileio_read(&elf->fileio, sizeof(Elf32_Ehdr), (uint8_t*)elf->header, &read_bytes)) != ERROR_OK)
+       {
+               LOG_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");
+               LOG_ERROR("cannot read ELF file header, only partially read");
                return ERROR_FILEIO_OPERATION_FAILED;
        }
 
-       if (strncmp((char*)elf->header->e_ident,ELFMAG,SELFMAG) != 0)
+       if (strncmp((char*)elf->header->e_ident,ELFMAG,SELFMAG)!=0)
        {
-               ERROR("invalid ELF file, bad magic number");
+               LOG_ERROR("invalid ELF file, bad magic number");
                return ERROR_IMAGE_FORMAT_ERROR;
        }
-       if (elf->header->e_ident[EI_CLASS] != ELFCLASS32)
+       if (elf->header->e_ident[EI_CLASS]!=ELFCLASS32)
        {
-               ERROR("invalid ELF file, only 32bits files are supported");
+               LOG_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))
+       if ((elf->endianness!=ELFDATA2LSB)
+                &&(elf->endianness!=ELFDATA2MSB))
        {
-               ERROR("invalid ELF file, unknown endianess setting");
+               LOG_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)
+       elf->segment_count = field16(elf,elf->header->e_phnum);
+       if (elf->segment_count==0)
        {
-               ERROR("invalid ELF file, no program headers");
+               LOG_ERROR("invalid ELF file, no program headers");
                return ERROR_IMAGE_FORMAT_ERROR;
        }
 
-       elf->segments = malloc(elf->segment_count * sizeof(Elf32_Phdr));
+       if ((retval = fileio_seek(&elf->fileio, field32(elf,elf->header->e_phoff))) != ERROR_OK)
+       {
+               LOG_ERROR("cannot seek to ELF program header table, read failed");
+               return retval;
+       }
+
+       elf->segments = malloc(elf->segment_count*sizeof(Elf32_Phdr));
+       if(elf->segments == NULL)
+       {
+               LOG_ERROR("insufficient memory to perform operation ");
+               return ERROR_FILEIO_OPERATION_FAILED;
+       }
 
-       if ((retval = fileio_read(&elf->fileio, elf->segment_count * sizeof(Elf32_Phdr), (u8*)elf->segments, &read_bytes)) != ERROR_OK)
+       if ((retval = fileio_read(&elf->fileio, elf->segment_count*sizeof(Elf32_Phdr), (uint8_t*)elf->segments, &read_bytes)) != ERROR_OK)
        {
-               ERROR("cannot read ELF segment headers, read failed");
+               LOG_ERROR("cannot read ELF segment headers, read failed");
                return retval;
        }
-       if (read_bytes != elf->segment_count * sizeof(Elf32_Phdr))
+       if (read_bytes != elf->segment_count*sizeof(Elf32_Phdr))
        {
-               ERROR("cannot read ELF segment headers, only partially read");
+               LOG_ERROR("cannot read ELF segment headers, only partially read");
                return ERROR_FILEIO_OPERATION_FAILED;
        }
 
        /* count useful segments (loadable), ignore BSS section */
        image->num_sections = 0;
-       for (i = 0; i < elf->segment_count; i++)
+       for (i=0;i<elf->segment_count;i++)
                if ((field32(elf, elf->segments[i].p_type) == PT_LOAD) && (field32(elf, elf->segments[i].p_filesz) != 0))
                        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++)
+       for (i=0,j=0;i<elf->segment_count;i++)
        {
                if ((field32(elf, elf->segments[i].p_type) == PT_LOAD) && (field32(elf, elf->segments[i].p_filesz) != 0))
                {
-                       image->sections[j].size = field32(elf, elf->segments[i].p_filesz);
-                       image->sections[j].base_address = field32(elf, elf->segments[i].p_paddr);
+                       image->sections[j].size = field32(elf,elf->segments[i].p_filesz);
+                       image->sections[j].base_address = field32(elf,elf->segments[i].p_paddr);
                        image->sections[j].private = &elf->segments[i];
-                       image->sections[j].flags = field32(elf, elf->segments[i].p_flags);
+                       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);
+       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)
+static int image_elf_read_section(image_t *image, int section, u32 offset, u32 size, uint8_t *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;
+       u32 read_size,really_read;
        int retval;
 
        *size_read = 0;
 
-       DEBUG("load segment %d at 0x%x (sz = 0x%x)", section, offset, size);
+       LOG_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))
+       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_size = MIN(size, field32(elf,segment->p_filesz)-offset);
+               LOG_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)
+               if ((retval = fileio_seek(&elf->fileio, field32(elf,segment->p_offset)+offset)) != ERROR_OK)
                {
-                       ERROR("cannot find ELF segment content, seek failed");
+                       LOG_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");
+                       LOG_ERROR("cannot read ELF segment content, read failed");
                        return retval;
                }
                buffer += read_size;
@@ -466,7 +478,7 @@ int image_elf_read_section(image_t *image, int section, u32 offset, u32 size, u8
        return ERROR_OK;
 }
 
-int image_mot_buffer_complete(image_t *image)
+static int image_mot_buffer_complete(image_t *image)
 {
        image_mot_t *mot = image->type_private;
        fileio_t *fileio = &mot->fileio;
@@ -493,7 +505,7 @@ int image_mot_buffer_complete(image_t *image)
                u32 address;
                u32 record_type;
                u32 checksum;
-               u8 cal_checksum = 0;
+               uint8_t cal_checksum = 0;
                u32 bytes_read = 0;
 
                /* get record type and record length */
@@ -503,7 +515,7 @@ int image_mot_buffer_complete(image_t *image)
                }
 
                bytes_read += 4;
-               cal_checksum += (u8)count;
+               cal_checksum += (uint8_t)count;
 
                /* skip checksum byte */
                count -=1;
@@ -515,7 +527,7 @@ int image_mot_buffer_complete(image_t *image)
 
                        while (count-- > 0) {
                                sscanf(&lpszLine[bytes_read], "%2x", &iValue);
-                               cal_checksum += (u8)iValue;
+                               cal_checksum += (uint8_t)iValue;
                                bytes_read += 2;
                        }
                }
@@ -526,8 +538,8 @@ int image_mot_buffer_complete(image_t *image)
                                case 1:
                                        /* S1 - 16 bit address data record */
                                        sscanf(&lpszLine[bytes_read], "%4x", &address);
-                                       cal_checksum += (u8)(address >> 8);
-                                       cal_checksum += (u8)address;
+                                       cal_checksum += (uint8_t)(address >> 8);
+                                       cal_checksum += (uint8_t)address;
                                        bytes_read += 4;
                                        count -=2;
                                        break;
@@ -535,9 +547,9 @@ int image_mot_buffer_complete(image_t *image)
                                case 2:
                                        /* S2 - 24 bit address data record */
                                        sscanf(&lpszLine[bytes_read], "%6x", &address);
-                                       cal_checksum += (u8)(address >> 16);
-                                       cal_checksum += (u8)(address >> 8);
-                                       cal_checksum += (u8)address;
+                                       cal_checksum += (uint8_t)(address >> 16);
+                                       cal_checksum += (uint8_t)(address >> 8);
+                                       cal_checksum += (uint8_t)address;
                                        bytes_read += 6;
                                        count -=3;
                                        break;
@@ -545,13 +557,14 @@ int image_mot_buffer_complete(image_t *image)
                                case 3:
                                        /* S3 - 32 bit address data record */
                                        sscanf(&lpszLine[bytes_read], "%8x", &address);
-                                       cal_checksum += (u8)(address >> 24);
-                                       cal_checksum += (u8)(address >> 16);
-                                       cal_checksum += (u8)(address >> 8);
-                                       cal_checksum += (u8)address;
+                                       cal_checksum += (uint8_t)(address >> 24);
+                                       cal_checksum += (uint8_t)(address >> 16);
+                                       cal_checksum += (uint8_t)(address >> 8);
+                                       cal_checksum += (uint8_t)address;
                                        bytes_read += 8;
                                        count -=4;
                                        break;
+
                        }
 
                        if (full_address != address)
@@ -573,8 +586,10 @@ int image_mot_buffer_complete(image_t *image)
 
                        while (count-- > 0)
                        {
-                               sscanf(&lpszLine[bytes_read], "%2x", (u32*)&mot->buffer[cooked_bytes]);
-                               cal_checksum += (u8)mot->buffer[cooked_bytes];
+                               unsigned value;
+                               sscanf(&lpszLine[bytes_read], "%2x", &value);
+                               mot->buffer[cooked_bytes] = (uint8_t)value;
+                               cal_checksum += (uint8_t)mot->buffer[cooked_bytes];
                                bytes_read += 2;
                                cooked_bytes += 1;
                                section[image->num_sections].size += 1;
@@ -589,7 +604,7 @@ int image_mot_buffer_complete(image_t *image)
                        while (count-- > 0)
                        {
                                sscanf(&lpszLine[bytes_read], "%2x", &dummy);
-                               cal_checksum += (u8)dummy;
+                               cal_checksum += (uint8_t)dummy;
                                bytes_read += 2;
                        }
                }
@@ -612,24 +627,24 @@ int image_mot_buffer_complete(image_t *image)
                }
                else
                {
-                       ERROR("unhandled S19 record type: %i", record_type);
+                       LOG_ERROR("unhandled S19 record type: %i", record_type);
                        return ERROR_IMAGE_FORMAT_ERROR;
                }
 
                /* account for checksum, will always be 0xFF */
                sscanf(&lpszLine[bytes_read], "%2x", &checksum);
-               cal_checksum += (u8)checksum;
+               cal_checksum += (uint8_t)checksum;
                bytes_read += 2;
 
                if( cal_checksum != 0xFF )
                {
                        /* checksum failed */
-                       ERROR("incorrect record checksum found in S19 file");
+                       LOG_ERROR("incorrect record checksum found in S19 file");
                        return ERROR_IMAGE_CHECKSUM;
                }
        }
 
-       ERROR("premature end of S19 file, no end-of-file record found");
+       LOG_ERROR("premature end of S19 file, no end-of-file record found");
        return ERROR_IMAGE_FORMAT_ERROR;
 }
 
@@ -650,8 +665,6 @@ int image_open(image_t *image, char *url, char *type_string)
 
                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;
                }
 
@@ -669,16 +682,12 @@ int image_open(image_t *image, char *url, char *type_string)
 
                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);
+                       LOG_ERROR("failed buffering IHEX image, check daemon output for additional information");
                        fileio_close(&image_ihex->fileio);
                        return retval;
                }
@@ -691,22 +700,25 @@ int image_open(image_t *image, char *url, char *type_string)
 
                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)
        {
+               target_t *target = get_target(url);
+
+               if (target == NULL)
+               {
+                       LOG_ERROR("target '%s' not defined", url);
+                       return ERROR_FAIL;
+               }
+
                image_memory_t *image_memory;
 
                image->num_sections = 1;
@@ -717,7 +729,7 @@ int image_open(image_t *image, char *url, char *type_string)
 
                image_memory = image->type_private = malloc(sizeof(image_memory_t));
 
-               image_memory->target = get_target_by_num(strtoul(url, NULL, 0));;
+               image_memory->target = target;
                image_memory->cache = NULL;
                image_memory->cache_address = 0x0;
        }
@@ -729,16 +741,12 @@ int image_open(image_t *image, char *url, char *type_string)
 
                if ((retval = fileio_open(&image_mot->fileio, url, FILEIO_READ, FILEIO_TEXT)) != ERROR_OK)
                {
-                       strncpy(image->error_str, image_mot->fileio.error_str, IMAGE_MAX_ERROR_STRING);
-                       ERROR(image->error_str);
                        return retval;
                }
 
                if ((retval = image_mot_buffer_complete(image)) != ERROR_OK)
                {
-                       snprintf(image->error_str, IMAGE_MAX_ERROR_STRING,
-                               "failed buffering S19 image, check daemon output for additional information");
-                       ERROR(image->error_str);
+                       LOG_ERROR("failed buffering S19 image, check daemon output for additional information");
                        fileio_close(&image_mot->fileio);
                        return retval;
                }
@@ -754,28 +762,28 @@ int image_open(image_t *image, char *url, char *type_string)
        {
                /* relocate */
                int section;
-               for (section = 0; section < image->num_sections; section++)
+               for (section=0; section < image->num_sections; section++)
                {
-                       image->sections[section].base_address += image->base_address;
+                       image->sections[section].base_address+=image->base_address;
                }
                /* we're done relocating. The two statements below are mainly
                 * for documenation purposes: stop anyone from empirically
                 * thinking they should use these values henceforth. */
-               image->base_address = 0;
-               image->base_address_set = 0;
+               image->base_address=0;
+               image->base_address_set=0;
        }
 
        return retval;
 };
 
-int image_read_section(image_t *image, int section, u32 offset, u32 size, u8 *buffer, u32 *size_read)
+int image_read_section(image_t *image, int section, u32 offset, u32 size, uint8_t *buffer, u32 *size_read)
 {
        int retval;
 
        /* don't read past the end of a section */
        if (offset + size > image->sections[section].size)
        {
-               DEBUG("read past end of section: 0x%8.8x + 0x%8.8x > 0x%8.8x",
+               LOG_DEBUG("read past end of section: 0x%8.8x + 0x%8.8x > 0x%8.8x",
                                offset, size, image->sections[section].size);
                return ERROR_INVALID_ARGUMENTS;
        }
@@ -791,22 +799,19 @@ int image_read_section(image_t *image, int section, u32 offset, u32 size, u8 *bu
                /* 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)
        {
-               memcpy(buffer, (u8*)image->sections[section].private + offset, size);
+               memcpy(buffer, (uint8_t*)image->sections[section].private + offset, size);
                *size_read = size;
-               image->error_str[0] = '\0';
 
                return ERROR_OK;
        }
@@ -855,17 +860,15 @@ int image_read_section(image_t *image, int section, u32 offset, u32 size, u8 *bu
        }
        else if (image->type == IMAGE_SRECORD)
        {
-               memcpy(buffer, (u8*)image->sections[section].private + offset, size);
+               memcpy(buffer, (uint8_t*)image->sections[section].private + offset, size);
                *size_read = size;
-               image->error_str[0] = '\0';
 
                return ERROR_OK;
        }
        else if (image->type == IMAGE_BUILDER)
        {
-               memcpy(buffer, (u8*)image->sections[section].private + offset, size);
+               memcpy(buffer, (uint8_t*)image->sections[section].private + offset, size);
                *size_read = size;
-               image->error_str[0] = '\0';
 
                return ERROR_OK;
        }
@@ -873,7 +876,7 @@ int image_read_section(image_t *image, int section, u32 offset, u32 size, u8 *bu
        return ERROR_OK;
 }
 
-int image_add_section(image_t *image, u32 base, u32 size, int flags, u8 *data)
+int image_add_section(image_t *image, u32 base, u32 size, int flags, uint8_t *data)
 {
        image_section_t *section;
 
@@ -891,7 +894,7 @@ int image_add_section(image_t *image, u32 base, u32 size, int flags, u8 *data)
                if (((section->base_address + section->size) == base) && (section->flags == flags))
                {
                        section->private = realloc(section->private, section->size + size);
-                       memcpy((u8*)section->private + section->size, data, size);
+                       memcpy((uint8_t*)section->private + section->size, data, size);
                        section->size += size;
                        return ERROR_OK;
                }
@@ -904,13 +907,13 @@ int image_add_section(image_t *image, u32 base, u32 size, int flags, u8 *data)
        section->base_address = base;
        section->size = size;
        section->flags = flags;
-       section->private = malloc(sizeof(u8) * size);
-       memcpy((u8*)section->private, data, size);
+       section->private = malloc(sizeof(uint8_t) * size);
+       memcpy((uint8_t*)section->private, data, size);
 
        return ERROR_OK;
 }
 
-int image_close(image_t *image)
+void image_close(image_t *image)
 {
        if (image->type == IMAGE_BINARY)
        {
@@ -992,39 +995,44 @@ int image_close(image_t *image)
                free(image->sections);
                image->sections = NULL;
        }
-
-       return ERROR_OK;
 }
 
-static u32 crc32_table[256] = {0, 0};
-
-int image_calculate_checksum(u8* buffer, u32 nbytes, u32* checksum)
+int image_calculate_checksum(uint8_t* buffer, u32 nbytes, u32* checksum)
 {
        u32 crc = 0xffffffff;
+       LOG_DEBUG("Calculating checksum");
 
-       if (!crc32_table[1])
+       u32 crc32_table[256];
+
+       /* Initialize the CRC table and the decoding table.  */
+       int i, j;
+       unsigned int c;
+       for (i = 0; i < 256; i++)
        {
-               /* Initialize the CRC table and the decoding table.  */
-               int i, j;
-               unsigned int c;
-               for (i = 0; i < 256; i++)
+               /* as per gdb */
+               for (c = i << 24, j = 8; j > 0; --j)
+                       c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1);
+               crc32_table[i] = c;
+       }
+
+       while (nbytes>0)
+       {
+               int run=nbytes;
+               if (run>32768)
+               {
+                       run=32768;
+               }
+               nbytes-=run;
+               while (run--)
                {
                        /* as per gdb */
-                       for (c = i << 24, j = 8; j > 0; --j)
-                               c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1);
-                       crc32_table[i] = c;
+                       crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buffer++) & 255];
                }
+               keep_alive();
        }
 
-       while (nbytes--)
-       {
-               /* as per gdb */
-               crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buffer++) & 255];
-       }
+       LOG_DEBUG("Calculating checksum done");
 
        *checksum = crc;
        return ERROR_OK;
 }
-
-
-