Removed old elfloader.c and replaced with the current code (previously in elfloader-tmp.c)
This commit is contained in:
adamdunkels
parent
5d3baef0d2
commit
70170b65b6
|
|
@ -1,77 +1,61 @@
|
|||
/*
|
||||
* Copyright (c) 2005, Swedish Institute of Computer Science
|
||||
* All rights reserved.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. Neither the name of the Institute nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. Neither the name of the Institute nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* This file is part of the Contiki operating system.
|
||||
*
|
||||
* @(#)$Id: elfloader.c,v 1.1 2006/06/17 22:41:18 adamdunkels Exp $
|
||||
* @(#)$Id: elfloader.c,v 1.2 2006/12/18 11:55:42 adamdunkels Exp $
|
||||
*/
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
#include <sys/unistd.h>
|
||||
|
||||
#include "contiki.h"
|
||||
|
||||
#include "loader/elfloader.h"
|
||||
#include "loader/elfloader-tmp.h"
|
||||
#include "loader/elfloader-arch.h"
|
||||
|
||||
#include "cfs/cfs.h"
|
||||
#include "loader/symtab.h"
|
||||
|
||||
#include "lib/malloc.h"
|
||||
#include "dev/rom.h"
|
||||
#include "dev/xmem.h"
|
||||
#include <stddef.h>
|
||||
#include <string.h>
|
||||
#include <stdio.h>
|
||||
|
||||
#if 0
|
||||
#include <stdio.h>
|
||||
#define PRINTF(...) printf(__VA_ARGS__)
|
||||
#else
|
||||
#define PRINTF(...) do {} while (0)
|
||||
#endif
|
||||
|
||||
#define IMAX(a, b) (((a) > (b)) ? (a) : (b))
|
||||
|
||||
static char *datamemory;
|
||||
|
||||
#define TEXTADDRESS \
|
||||
(((uintptr_t)&_etext + (uintptr_t)&_edata - (uintptr_t)&__data_start \
|
||||
+ ROM_ERASE_UNIT_SIZE) & ~(ROM_ERASE_UNIT_SIZE - 1))
|
||||
|
||||
#define EI_NIDENT 16
|
||||
|
||||
typedef unsigned long elf32_word;
|
||||
typedef signed long elf32_sword;
|
||||
typedef unsigned short elf32_half;
|
||||
typedef unsigned long elf32_off;
|
||||
typedef unsigned long elf32_addr;
|
||||
|
||||
|
||||
struct elf32_ehdr {
|
||||
unsigned char e_ident[EI_NIDENT]; /* ident bytes */
|
||||
elf32_half e_type; /* file type */
|
||||
elf32_half e_type; /* file type */
|
||||
elf32_half e_machine; /* target machine */
|
||||
elf32_word e_version; /* file version */
|
||||
elf32_addr e_entry; /* start address */
|
||||
|
|
@ -129,12 +113,6 @@ struct elf32_rel {
|
|||
elf32_word r_info; /* Relocation type and symbol index. */
|
||||
};
|
||||
|
||||
struct elf32_rela {
|
||||
elf32_addr r_offset; /* Location to be relocated. */
|
||||
elf32_word r_info; /* Relocation type and symbol index. */
|
||||
elf32_sword r_addend; /* Addend. */
|
||||
};
|
||||
|
||||
struct elf32_sym {
|
||||
elf32_word st_name; /* String table index of name. */
|
||||
elf32_addr st_value; /* Symbol value. */
|
||||
|
|
@ -149,46 +127,119 @@ struct elf32_sym {
|
|||
|
||||
struct relevant_section {
|
||||
unsigned char number;
|
||||
//off_t offset;
|
||||
unsigned int offset;
|
||||
char *address;
|
||||
};
|
||||
|
||||
char elfloader_unknown[30]; /* Name that caused link error. */
|
||||
|
||||
struct process **elfloader_autostart_processes;
|
||||
|
||||
static struct relevant_section bss, data, text;
|
||||
|
||||
/*static unsigned char bss_sectionno, data_sectionno, text_sectionno;*/
|
||||
|
||||
static const unsigned char elf_magic_header[] =
|
||||
const static unsigned char elf_magic_header[] =
|
||||
{0x7f, 0x45, 0x4c, 0x46, /* 0x7f, 'E', 'L', 'F' */
|
||||
0x01, /* Only 32-bit objects. */
|
||||
0x01, /* Only LSB data. */
|
||||
0x01, /* Only ELF version 1. */
|
||||
};
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
static void
|
||||
seek_read(int fd, unsigned int offset, char *buf, int len)
|
||||
{
|
||||
cfs_seek(fd, offset);
|
||||
cfs_read(fd, buf, len);
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/*
|
||||
static void
|
||||
seek_write(int fd, unsigned int offset, char *buf, int len)
|
||||
{
|
||||
cfs_seek(fd, offset);
|
||||
cfs_write(fd, buf, len);
|
||||
}
|
||||
*/
|
||||
/*---------------------------------------------------------------------------*/
|
||||
static void *
|
||||
find_local_symbol(int fd, const char *symbol,
|
||||
unsigned int symtab, unsigned short symtabsize,
|
||||
unsigned int strtab)
|
||||
{
|
||||
struct elf32_sym s;
|
||||
unsigned int a;
|
||||
char name[30];
|
||||
struct relevant_section *sect;
|
||||
|
||||
for(a = symtab; a < symtab + symtabsize; a += sizeof(s)) {
|
||||
seek_read(fd, a, (char *)&s, sizeof(s));
|
||||
|
||||
if(s.st_name != 0) {
|
||||
seek_read(fd, strtab + s.st_name, name, sizeof(name));
|
||||
if(strcmp(name, symbol) == 0) {
|
||||
if(s.st_shndx == bss.number) {
|
||||
sect = &bss;
|
||||
} else if(s.st_shndx == data.number) {
|
||||
sect = &data;
|
||||
} else if(s.st_shndx == text.number) {
|
||||
sect = &text;
|
||||
} else {
|
||||
return NULL;
|
||||
}
|
||||
return &(sect->address[s.st_value]);
|
||||
}
|
||||
}
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
static int
|
||||
relocate_section(off_t section, unsigned short size,
|
||||
off_t sectionaddr,
|
||||
off_t strs,
|
||||
off_t strtab,
|
||||
off_t symtab,
|
||||
char *mem)
|
||||
relocate_section(int fd,
|
||||
unsigned int section, unsigned short size,
|
||||
unsigned int sectionaddr,
|
||||
unsigned int strs,
|
||||
unsigned int strtab,
|
||||
unsigned int symtab, unsigned short symtabsize)
|
||||
{
|
||||
struct elf32_rela rela;
|
||||
struct elf32_sym s;
|
||||
off_t a;
|
||||
unsigned int a;
|
||||
char name[30];
|
||||
char *addr;
|
||||
struct relevant_section *sect;
|
||||
|
||||
|
||||
for(a = section; a < section + size; a += sizeof(struct elf32_rela)) {
|
||||
xmem_pread(&rela, sizeof(rela), a);
|
||||
xmem_pread(&s, sizeof(s),
|
||||
symtab + sizeof(struct elf32_sym) * ELF32_R_SYM(rela.r_info));
|
||||
if(s.st_name == 0) { /* Local symbol (static) */
|
||||
if(s.st_shndx == bss.number) {
|
||||
seek_read(fd, a, (char *)&rela, sizeof(rela));
|
||||
seek_read(fd,
|
||||
symtab + sizeof(struct elf32_sym) * ELF32_R_SYM(rela.r_info),
|
||||
(char *)&s, sizeof(s));
|
||||
if(s.st_name != 0) {
|
||||
seek_read(fd, strtab + s.st_name, name, sizeof(name));
|
||||
PRINTF("name: %s\n", name);
|
||||
addr = (char *)symtab_lookup(name);
|
||||
/* ADDED */
|
||||
if(addr == NULL) {
|
||||
PRINTF("name not found in global: %s\n", name);
|
||||
addr = find_local_symbol(fd, name, symtab, symtabsize, strtab);
|
||||
PRINTF("found address %p\n", addr);
|
||||
}
|
||||
if(addr == NULL) {
|
||||
if(s.st_shndx == bss.number) {
|
||||
sect = &bss;
|
||||
} else if(s.st_shndx == data.number) {
|
||||
sect = &data;
|
||||
} else if(s.st_shndx == text.number) {
|
||||
sect = &text;
|
||||
} else {
|
||||
PRINTF("elfloader unknown name: '%30s'\n", name);
|
||||
memcpy(elfloader_unknown, name, sizeof(elfloader_unknown));
|
||||
elfloader_unknown[sizeof(elfloader_unknown) - 1] = 0;
|
||||
return ELFLOADER_SYMBOL_NOT_FOUND;
|
||||
}
|
||||
addr = sect->address;
|
||||
}
|
||||
} else {
|
||||
if(s.st_shndx == bss.number) {
|
||||
sect = &bss;
|
||||
} else if(s.st_shndx == data.number) {
|
||||
sect = &data;
|
||||
|
|
@ -197,77 +248,70 @@ relocate_section(off_t section, unsigned short size,
|
|||
} else {
|
||||
return ELFLOADER_SEGMENT_NOT_FOUND;
|
||||
}
|
||||
addr = sect->address + rela.r_addend;
|
||||
} else {
|
||||
xmem_pread(name, sizeof(name), strtab + s.st_name);
|
||||
addr = (char *)symtab_lookup(name);
|
||||
if(addr != NULL) { /* Global symbol */
|
||||
addr += rela.r_addend;
|
||||
} else { /* Exported symbol */
|
||||
if(s.st_shndx == bss.number) {
|
||||
sect = &bss;
|
||||
} else if(s.st_shndx == data.number) {
|
||||
sect = &data;
|
||||
} else if(s.st_shndx == text.number) {
|
||||
sect = &text;
|
||||
} else {
|
||||
PRINTF("elfloader unkown name: '%30s'\n", name);
|
||||
memcpy(elfloader_unknown, name, sizeof(elfloader_unknown));
|
||||
elfloader_unknown[sizeof(elfloader_unknown) - 1] = 0;
|
||||
return ELFLOADER_SYMBOL_NOT_FOUND;
|
||||
}
|
||||
addr = sect->address + s.st_value + rela.r_addend;
|
||||
}
|
||||
|
||||
addr = sect->address;
|
||||
}
|
||||
memcpy(&mem[rela.r_offset], &addr, 2); /* Write reloc */
|
||||
|
||||
elfloader_arch_relocate(fd, sectionaddr, &rela, addr);
|
||||
|
||||
}
|
||||
return ELFLOADER_OK;
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
typedef void (*PFV)(void);
|
||||
|
||||
struct process *elfloader_loaded_process;
|
||||
void (*elfloader_fini)(void);
|
||||
|
||||
static PFV
|
||||
find_init_and_fini(off_t symtab, unsigned short size, off_t strtab)
|
||||
static void *
|
||||
find_program_processes(int fd,
|
||||
unsigned int symtab, unsigned short size,
|
||||
unsigned int strtab)
|
||||
{
|
||||
struct elf32_sym s;
|
||||
off_t a;
|
||||
unsigned int a;
|
||||
char name[30];
|
||||
void (*elfloader_init)(void);
|
||||
|
||||
elfloader_init = NULL;
|
||||
|
||||
|
||||
for(a = symtab; a < symtab + size; a += sizeof(s)) {
|
||||
xmem_pread(&s, sizeof(s), a);
|
||||
seek_read(fd, a, (char *)&s, sizeof(s));
|
||||
|
||||
if(s.st_name != 0) {
|
||||
xmem_pread(name, sizeof(name), strtab + s.st_name);
|
||||
if(strcmp(name, "process_load") == 0) {
|
||||
elfloader_loaded_process =
|
||||
*(struct process **)&data.address[s.st_value];
|
||||
} else if (strcmp(name, "_init") == 0) {
|
||||
/* XXX Check segment == text. */
|
||||
elfloader_init = (PFV)&text.address[s.st_value];
|
||||
} else if (strcmp(name, "_fini") == 0) {
|
||||
/* XXX Check segment == text. */
|
||||
elfloader_fini = (PFV)&text.address[s.st_value];
|
||||
seek_read(fd, strtab + s.st_name, name, sizeof(name));
|
||||
if(strcmp(name, "autostart_processes") == 0) {
|
||||
return &data.address[s.st_value];
|
||||
}
|
||||
}
|
||||
}
|
||||
return elfloader_init;
|
||||
return NULL;
|
||||
/* return find_local_symbol(fd, "autostart_processes", symtab, size, strtab); */
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void
|
||||
elfloader_init(void)
|
||||
{
|
||||
elfloader_autostart_processes = NULL;
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
#if 0
|
||||
static void
|
||||
print_chars(unsigned char *ptr, int num)
|
||||
{
|
||||
int i;
|
||||
for(i = 0; i < num; ++i) {
|
||||
PRINTF("%d", ptr[i]);
|
||||
if(i == num - 1) {
|
||||
PRINTF("\n");
|
||||
} else {
|
||||
PRINTF(", ");
|
||||
}
|
||||
}
|
||||
}
|
||||
#endif /* 0 */
|
||||
/*---------------------------------------------------------------------------*/
|
||||
int
|
||||
elfloader_load(off_t eepromaddr)
|
||||
elfloader_load(int fd)
|
||||
{
|
||||
struct elf32_ehdr ehdr;
|
||||
struct elf32_shdr shdr;
|
||||
struct elf32_shdr strtable;
|
||||
off_t strs;
|
||||
off_t shdrptr;
|
||||
off_t nameptr;
|
||||
unsigned int strs;
|
||||
unsigned int shdrptr;
|
||||
unsigned int nameptr;
|
||||
char name[12];
|
||||
|
||||
int i;
|
||||
|
|
@ -279,35 +323,38 @@ elfloader_load(off_t eepromaddr)
|
|||
unsigned short strtaboff = 0, strtabsize;
|
||||
unsigned short bsssize = 0;
|
||||
|
||||
struct process **process;
|
||||
int ret;
|
||||
|
||||
void (*elfloader_init)(void);
|
||||
elfloader_unknown[0] = 0;
|
||||
|
||||
/* The ELF header is located at the start of the buffer. */
|
||||
xmem_pread(&ehdr, sizeof(ehdr), eepromaddr);
|
||||
seek_read(fd, 0, (char *)&ehdr, sizeof(ehdr));
|
||||
|
||||
/* print_chars(ehdr.e_ident, sizeof(elf_magic_header));
|
||||
print_chars(elf_magic_header, sizeof(elf_magic_header));*/
|
||||
/* Make sure that we have a correct and compatible ELF header. */
|
||||
if(memcmp(ehdr.e_ident, elf_magic_header, sizeof(elf_magic_header)) != 0) {
|
||||
PRINTF("ELF header problems\n");
|
||||
return ELFLOADER_BAD_ELF_HEADER;
|
||||
}
|
||||
|
||||
/* Grab the section header. */
|
||||
shdrptr = eepromaddr + ehdr.e_shoff;
|
||||
xmem_pread(&shdr, sizeof(shdr), shdrptr);
|
||||
shdrptr = ehdr.e_shoff;
|
||||
seek_read(fd, shdrptr, (char *)&shdr, sizeof(shdr));
|
||||
|
||||
/* Get the size and number of entries of the section header. */
|
||||
shdrsize = ehdr.e_shentsize;
|
||||
shdrnum = ehdr.e_shnum;
|
||||
|
||||
/* The string table section: holds the names of the sections. */
|
||||
xmem_pread(&strtable, sizeof(strtable),
|
||||
eepromaddr + ehdr.e_shoff + shdrsize * ehdr.e_shstrndx);
|
||||
seek_read(fd, ehdr.e_shoff + shdrsize * ehdr.e_shstrndx,
|
||||
(char *)&strtable, sizeof(strtable));
|
||||
|
||||
/* Get a pointer to the actual table of strings. This table holds
|
||||
the names of the sections, not the names of other symbols in the
|
||||
file (these are in the sybtam section). */
|
||||
strs = eepromaddr + strtable.sh_offset;
|
||||
strs = strtable.sh_offset;
|
||||
|
||||
/* Go through all sections and pick out the relevant ones. The
|
||||
".text" segment holds the actual code from the ELF file, the
|
||||
|
|
@ -332,24 +379,24 @@ elfloader_load(off_t eepromaddr)
|
|||
|
||||
bss.number = data.number = text.number = 0;
|
||||
|
||||
shdrptr = eepromaddr + ehdr.e_shoff;
|
||||
shdrptr = ehdr.e_shoff;
|
||||
for(i = 0; i < shdrnum; ++i) {
|
||||
|
||||
xmem_pread(&shdr, sizeof(shdr), shdrptr);
|
||||
seek_read(fd, shdrptr, (char *)&shdr, sizeof(shdr));
|
||||
|
||||
/* The name of the section is contained in the strings table. */
|
||||
nameptr = strs + shdr.sh_name;
|
||||
xmem_pread(name, sizeof(name), nameptr);
|
||||
|
||||
seek_read(fd, nameptr, name, sizeof(name));
|
||||
|
||||
/* Match the name of the section with a predefined set of names
|
||||
(.text, .data, .bss, .rela.text, .rela.data, .symtab, and
|
||||
.strtab). */
|
||||
|
||||
|
||||
if(strncmp(name, ".text", 5) == 0) {
|
||||
textoff = shdr.sh_offset;
|
||||
textsize = shdr.sh_size;
|
||||
text.number = i;
|
||||
//text.offset = eepromaddr + textoff;
|
||||
text.offset = textoff;
|
||||
} else if(strncmp(name, ".rela.text", 10) == 0) {
|
||||
textrelaoff = shdr.sh_offset;
|
||||
textrelasize = shdr.sh_size;
|
||||
|
|
@ -357,7 +404,7 @@ elfloader_load(off_t eepromaddr)
|
|||
dataoff = shdr.sh_offset;
|
||||
datasize = shdr.sh_size;
|
||||
data.number = i;
|
||||
//data.offset = eepromaddr + dataoff;
|
||||
data.offset = dataoff;
|
||||
} else if(strncmp(name, ".rela.data", 10) == 0) {
|
||||
datarelaoff = shdr.sh_offset;
|
||||
datarelasize = shdr.sh_size;
|
||||
|
|
@ -370,16 +417,13 @@ elfloader_load(off_t eepromaddr)
|
|||
} else if(strncmp(name, ".bss", 4) == 0) {
|
||||
bsssize = shdr.sh_size;
|
||||
bss.number = i;
|
||||
//bss.offset = 0;
|
||||
} else {
|
||||
PRINTF("elfloader: unknown '%12s' %d\n", name, shdrsize);
|
||||
bss.offset = 0;
|
||||
}
|
||||
|
||||
/* Move on to the next section header. */
|
||||
shdrptr += shdrsize;
|
||||
}
|
||||
|
||||
|
||||
if(symtabsize == 0) {
|
||||
return ELFLOADER_NO_SYMTAB;
|
||||
}
|
||||
|
|
@ -390,102 +434,60 @@ elfloader_load(off_t eepromaddr)
|
|||
return ELFLOADER_NO_TEXT;
|
||||
}
|
||||
|
||||
if(datamemory != NULL) {
|
||||
free(datamemory);
|
||||
}
|
||||
bss.address = (char *)elfloader_arch_allocate_ram(bsssize + datasize);
|
||||
data.address = (char *)bss.address + bsssize;
|
||||
text.address = (char *)elfloader_arch_allocate_rom(textsize);
|
||||
|
||||
/* We are making semi-permanent allocations, first compact heap! */
|
||||
malloc_compact();
|
||||
datamemory = malloc(IMAX(textsize, datasize + bsssize));
|
||||
if(datamemory == NULL) {
|
||||
return ELFLOADER_DATA_TO_LARGE; /* XXX or text to large */
|
||||
}
|
||||
|
||||
bss.address = (char *)datamemory;
|
||||
data.address = (char *)datamemory + bsssize;
|
||||
text.address = (char *)TEXTADDRESS;
|
||||
|
||||
PRINTF("elfloader: copy text segment to RAM %p %p\n",
|
||||
datamemory, datamemory + textsize);
|
||||
xmem_pread(datamemory, textsize, eepromaddr + textoff);
|
||||
|
||||
/* If we have text segment relocations, we process them. */
|
||||
PRINTF("elfloader: relocate text\n");
|
||||
if(textrelasize > 0) {
|
||||
PRINTF("elfloader: relocate text in RAM\n");
|
||||
ret = relocate_section(eepromaddr + textrelaoff, textrelasize,
|
||||
eepromaddr + textoff,
|
||||
ret = relocate_section(fd,
|
||||
textrelaoff, textrelasize,
|
||||
textoff,
|
||||
strs,
|
||||
eepromaddr + strtaboff,
|
||||
eepromaddr + symtaboff,
|
||||
datamemory);
|
||||
strtaboff,
|
||||
symtaboff, symtabsize);
|
||||
if(ret != ELFLOADER_OK) {
|
||||
return ret;
|
||||
}
|
||||
}
|
||||
PRINTF("elfloader: copy text segment to ROM %p %p\n",
|
||||
text.address, text.address + textsize);
|
||||
rom_erase((textsize + ROM_ERASE_UNIT_SIZE) & ~(ROM_ERASE_UNIT_SIZE - 1),
|
||||
(uintptr_t)text.address);
|
||||
rom_pwrite(datamemory, textsize, (uintptr_t)text.address);
|
||||
|
||||
PRINTF("elfloader: copy data segment to RAM %p %p\n",
|
||||
data.address, data.address + datasize);
|
||||
xmem_pread(data.address, datasize, eepromaddr + dataoff);
|
||||
/* If we have any data segment relocations, we process them too. */
|
||||
PRINTF("elfloader: relocate data\n");
|
||||
if(datarelasize > 0) {
|
||||
PRINTF("elfloader: relocate data segment\n");
|
||||
ret = relocate_section(eepromaddr + datarelaoff, datarelasize,
|
||||
eepromaddr + dataoff,
|
||||
ret = relocate_section(fd,
|
||||
datarelaoff, datarelasize,
|
||||
dataoff,
|
||||
strs,
|
||||
eepromaddr + strtaboff,
|
||||
eepromaddr + symtaboff,
|
||||
data.address);
|
||||
strtaboff,
|
||||
symtaboff, symtabsize);
|
||||
if(ret != ELFLOADER_OK) {
|
||||
PRINTF("elfloader: data failed\n");
|
||||
return ret;
|
||||
}
|
||||
}
|
||||
|
||||
PRINTF("elfloader: zero bss %p %p\n", bss.address, bss.address + bsssize);
|
||||
/* Write text segment into flash and data segment into RAM. */
|
||||
cfs_seek(fd, textoff);
|
||||
elfloader_arch_write_text(fd, textsize, text.address);
|
||||
|
||||
memset(bss.address, 0, bsssize);
|
||||
datamemory = realloc(datamemory, datasize + bsssize);
|
||||
if(datamemory != bss.address) {
|
||||
free(bss.address);
|
||||
return ELFLOADER_BSS_TO_LARGE; /* XXX realloc moved data */
|
||||
}
|
||||
seek_read(fd, dataoff, data.address, datasize);
|
||||
|
||||
/* Find _init, _fini, and loaded_process. */
|
||||
elfloader_loaded_process = NULL;
|
||||
elfloader_fini = NULL;
|
||||
elfloader_init = find_init_and_fini(eepromaddr + symtaboff,
|
||||
symtabsize,
|
||||
eepromaddr + strtaboff);
|
||||
|
||||
if(elfloader_init != NULL) {
|
||||
PRINTF("init=%p fini=%p\n", elfloader_init, elfloader_fini);
|
||||
(*elfloader_init)();
|
||||
elfloader_loaded_process = NULL;
|
||||
return ELFLOADER_OK;
|
||||
}
|
||||
|
||||
if(elfloader_loaded_process != NULL) {
|
||||
PRINTF("elfloader: launch program\n");
|
||||
process_start(elfloader_loaded_process, NULL);
|
||||
elfloader_fini = NULL;
|
||||
PRINTF("elfloader: autostart search\n");
|
||||
process = find_local_symbol(fd, "autostart_processes", symtaboff, symtabsize, strtaboff);
|
||||
if(process != NULL) {
|
||||
PRINTF("elfloader: autostart found\n");
|
||||
elfloader_autostart_processes = process;
|
||||
return ELFLOADER_OK;
|
||||
} else {
|
||||
PRINTF("elfloader: no autostart\n");
|
||||
process = find_program_processes(fd, symtaboff, symtabsize, strtaboff);
|
||||
if(process != NULL) {
|
||||
PRINTF("elfloader: FOUND PRG\n");
|
||||
}
|
||||
return ELFLOADER_NO_STARTPOINT;
|
||||
}
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void
|
||||
elfloader_unload(void)
|
||||
{
|
||||
if(elfloader_fini != NULL) {
|
||||
(*elfloader_fini)();
|
||||
elfloader_fini = NULL;
|
||||
} else if(elfloader_loaded_process != NULL) {
|
||||
process_exit(elfloader_loaded_process);
|
||||
elfloader_loaded_process = NULL;
|
||||
}
|
||||
if(datamemory != NULL) {
|
||||
free(datamemory);
|
||||
datamemory = NULL;
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue