Added MSP430X ELFLOADER support to load image with large memory model.
Sumankumar Panchal
suman_panchal
parent
6ac939bc58
commit
db4df30366
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@ -0,0 +1,10 @@
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codeprop-tmp_src = codeprop-tmp.c
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# Enable LARGE MEMORY MODEL supports for WISMOTE and EXP5438 platform
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ifeq ($(TARGET),wismote)
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TARGET_MEMORY_MODEL = large
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endif
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ifeq ($(TARGET),exp5438)
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TARGET_MEMORY_MODEL = large
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endif
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@ -0,0 +1,810 @@
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/*
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* Copyright (c) 2015, Indian Institute of Science
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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*/
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/**
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* \file
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* MSP430x elfloader.
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* \author
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* Sumankumar Panchal <suman@ece.iisc.ernet.in>
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*
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*/
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#include "contiki.h"
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#include "loader/elfloader.h"
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#include "loader/elfloader-arch.h"
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#include "cfs/cfs.h"
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#include "loader/symtab.h"
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#include <stddef.h>
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#include <string.h>
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#include <stdio.h>
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#include "dev/flash.h"
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#define DEBUG 0
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#if DEBUG
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#include <stdio.h>
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#define PRINTF(...) printf(__VA_ARGS__)
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#else
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#define PRINTF(...) do {} while(0)
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#endif
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#define EI_NIDENT 16
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struct elf32_ehdr {
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unsigned char e_ident[EI_NIDENT]; /* ident bytes */
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elf32_half e_type; /* file type */
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elf32_half e_machine; /* target machine */
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elf32_word e_version; /* file version */
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elf32_addr e_entry; /* start address */
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elf32_off e_phoff; /* phdr file offset */
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elf32_off e_shoff; /* shdr file offset */
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elf32_word e_flags; /* file flags */
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elf32_half e_ehsize; /* sizeof ehdr */
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elf32_half e_phentsize; /* sizeof phdr */
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elf32_half e_phnum; /* number phdrs */
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elf32_half e_shentsize; /* sizeof shdr */
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elf32_half e_shnum; /* number shdrs */
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elf32_half e_shstrndx; /* shdr string index */
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};
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/* Values for e_type. */
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#define ET_NONE 0 /* Unknown type. */
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#define ET_REL 1 /* Relocatable. */
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#define ET_EXEC 2 /* Executable. */
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#define ET_DYN 3 /* Shared object. */
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#define ET_CORE 4 /* Core file. */
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struct elf32_shdr {
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elf32_word sh_name; /* section name */
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elf32_word sh_type; /* SHT_... */
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elf32_word sh_flags; /* SHF_... */
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elf32_addr sh_addr; /* virtual address */
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elf32_off sh_offset; /* file offset */
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elf32_word sh_size; /* section size */
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elf32_word sh_link; /* misc info */
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elf32_word sh_info; /* misc info */
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elf32_word sh_addralign; /* memory alignment */
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elf32_word sh_entsize; /* entry size if table */
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};
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/* sh_type */
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#define SHT_NULL 0 /* inactive */
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#define SHT_PROGBITS 1 /* program defined information */
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#define SHT_SYMTAB 2 /* symbol table section */
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#define SHT_STRTAB 3 /* string table section */
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#define SHT_RELA 4 /* relocation section with addends*/
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#define SHT_HASH 5 /* symbol hash table section */
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#define SHT_DYNAMIC 6 /* dynamic section */
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#define SHT_NOTE 7 /* note section */
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#define SHT_NOBITS 8 /* no space section */
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#define SHT_REL 9 /* relation section without addends */
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#define SHT_SHLIB 10 /* reserved - purpose unknown */
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#define SHT_DYNSYM 11 /* dynamic symbol table section */
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#define SHT_LOPROC 0x70000000 /* reserved range for processor */
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#define SHT_HIPROC 0x7fffffff /* specific section header types */
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#define SHT_LOUSER 0x80000000 /* reserved range for application */
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#define SHT_HIUSER 0xffffffff /* specific indexes */
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struct elf32_rel {
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elf32_addr r_offset; /* Location to be relocated. */
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elf32_word r_info; /* Relocation type and symbol index. */
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};
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struct elf32_sym {
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elf32_word st_name; /* String table index of name. */
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elf32_addr st_value; /* Symbol value. */
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elf32_word st_size; /* Size of associated object. */
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unsigned char st_info; /* Type and binding information. */
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unsigned char st_other; /* Reserved (not used). */
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elf32_half st_shndx; /* Section index of symbol. */
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};
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#define ELF32_R_SYM(info) ((info) >> 8)
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struct relevant_section {
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unsigned char number;
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unsigned int offset;
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char *address;
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};
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char elfloader_unknown[30]; /* Name that caused link error. */
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struct process *const *elfloader_autostart_processes;
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static struct relevant_section bss, data, rodata, rodatafar, text, textfar;
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static const unsigned char elf_magic_header[] =
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{ 0x7f, 0x45, 0x4c, 0x46, /* 0x7f, 'E', 'L', 'F' */
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0x01, /* Only 32-bit objects. */
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0x01, /* Only LSB data. */
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0x01, /* Only ELF version 1. */
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};
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/* relocation type */
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#define R_MSP430_NONE 0
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#define R_MSP430_32 1
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#define R_MSP430_10_PCREL 2
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#define R_MSP430_16 3
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#define R_MSP430_16_PCREL 4
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#define R_MSP430_16_BYTE 5
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#define R_MSP430_16_PCREL_BYTE 6
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#define R_MSP430_2X_PCREL 7
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#define R_MSP430_RL_PCREL 8
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#define R_MSP430X_SRC_BYTE 9
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#define R_MSP430X_SRC 10
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#define R_MSP430X_DST_BYTE 11
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#define R_MSP430X_DST 12
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#define R_MSP430X_DST_2ND_BYTE 13
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#define R_MSP430X_DST_2ND 14
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#define R_MSP430X_PCREL_SRC_BYTE 15
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#define R_MSP430X_PCREL_SRC 16
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#define R_MSP430X_PCREL_DST_BYTE 17
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#define R_MSP430X_PCREL_DST 18
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#define R_MSP430X_PCREL_DST_2ND 19
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#define R_MSP430X_PCREL_DST_2ND_BYTE 20
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#define R_MSP430X_S_BYTE 21
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#define R_MSP430X_S 22
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#define R_MSP430X_D_BYTE 23
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#define R_MSP430X_D 24
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#define R_MSP430X_PCREL_D 25
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#define R_MSP430X_INDXD 26
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#define R_MSP430X_PCREL_INDXD 27
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#define R_MSP430_10 28
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#define ELF32_R_TYPE(info) ((unsigned char)(info))
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static uint16_t datamemory_aligned[ELFLOADER_DATAMEMORY_SIZE / 2 + 1];
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static uint8_t *datamemory = (uint8_t *)datamemory_aligned;
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#if ELFLOADER_CONF_TEXT_IN_ROM
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static const char textmemory[ELFLOADER_TEXTMEMORY_SIZE] = { 0 };
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#else /* ELFLOADER_CONF_TEXT_IN_ROM */
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static char textmemory[ELFLOADER_TEXTMEMORY_SIZE];
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#endif /* ELFLOADER_CONF_TEXT_IN_ROM */
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/*---------------------------------------------------------------------------*/
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static void
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seek_read(int fd, unsigned int offset, char *buf, int len)
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{
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cfs_seek(fd, offset, CFS_SEEK_SET);
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cfs_read(fd, buf, len);
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#if DEBUG
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{
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int i;
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PRINTF("seek_read: Read len %d from offset %d\n",
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len, offset);
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for(i = 0; i < len; ++i) {
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PRINTF("%02x ", buf[i]);
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}
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printf("\n");
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}
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#endif /* DEBUG */
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}
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/*---------------------------------------------------------------------------*/
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static void *
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find_local_symbol(int fd, const char *symbol,
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unsigned int symtab, unsigned short symtabsize,
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unsigned int strtab)
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{
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struct elf32_sym s;
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unsigned int a;
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char name[30];
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struct relevant_section *sect;
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for(a = symtab; a < symtab + symtabsize; a += sizeof(s)) {
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seek_read(fd, a, (char *)&s, sizeof(s));
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if(s.st_name != 0) {
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seek_read(fd, strtab + s.st_name, name, sizeof(name));
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if(strcmp(name, symbol) == 0) {
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if(s.st_shndx == bss.number) {
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sect = &bss;
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} else if(s.st_shndx == data.number) {
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sect = &data;
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} else if(s.st_shndx == rodatafar.number) {
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sect = &rodatafar;
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} else if(s.st_shndx == textfar.number) {
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sect = &textfar;
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} else {
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return NULL;
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}
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return &(sect->address[s.st_value]);
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}
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}
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}
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return NULL;
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}
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/*---------------------------------------------------------------------------*/
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static int
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relocate_section(int fd,
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unsigned int section, unsigned short size,
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unsigned int sectionaddr,
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char *sectionbase,
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unsigned int strs,
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unsigned int strtab,
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unsigned int symtab, unsigned short symtabsize,
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unsigned char using_relas)
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{
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/*
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* sectionbase added; runtime start address of current section
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*/
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struct elf32_rela rela; /* Now used both for rel and rela data! */
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int rel_size = 0;
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struct elf32_sym s;
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unsigned int a;
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char name[30];
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char *addr;
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struct relevant_section *sect;
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/* determine correct relocation entry sizes */
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if(using_relas) {
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rel_size = sizeof(struct elf32_rela);
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} else {
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rel_size = sizeof(struct elf32_rel);
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}
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for(a = section; a < section + size; a += rel_size) {
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seek_read(fd, a, (char *)&rela, rel_size);
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seek_read(fd,
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symtab + sizeof(struct elf32_sym) * ELF32_R_SYM(rela.r_info),
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(char *)&s, sizeof(s));
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if(s.st_name != 0) {
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seek_read(fd, strtab + s.st_name, name, sizeof(name));
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PRINTF("name: %s\n", name);
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addr = (char *)symtab_lookup(name);
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if(addr == NULL) {
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PRINTF("name not found in global: %s\n", name);
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addr = find_local_symbol(fd, name, symtab, symtabsize, strtab);
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PRINTF("found address %p\n", addr);
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}
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if(addr == NULL) {
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if(s.st_shndx == bss.number) {
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sect = &bss;
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} else if(s.st_shndx == data.number) {
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sect = &data;
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} else if(s.st_shndx == rodatafar.number) {
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sect = &rodatafar;
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} else if(s.st_shndx == textfar.number) {
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sect = &textfar;
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} else {
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PRINTF("elfloader unknown name: '%30s'\n", name);
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memcpy(elfloader_unknown, name, sizeof(elfloader_unknown));
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elfloader_unknown[sizeof(elfloader_unknown) - 1] = 0;
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return ELFLOADER_SYMBOL_NOT_FOUND;
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}
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addr = sect->address;
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}
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} else {
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if(s.st_shndx == bss.number) {
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sect = &bss;
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} else if(s.st_shndx == data.number) {
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sect = &data;
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} else if(s.st_shndx == rodatafar.number) {
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sect = &rodatafar;
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} else if(s.st_shndx == textfar.number) {
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sect = &textfar;
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} else {
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return ELFLOADER_SEGMENT_NOT_FOUND;
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}
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addr = sect->address;
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}
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if(!using_relas) {
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/* copy addend to rela structure */
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seek_read(fd, sectionaddr + rela.r_offset, (char *)&rela.r_addend, 4);
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}
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elfloader_arch_relocate(fd, sectionaddr, sectionbase, &rela, addr);
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}
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return ELFLOADER_OK;
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}
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/*---------------------------------------------------------------------------*/
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static void *
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find_program_processes(int fd,
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unsigned int symtab, unsigned short size,
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unsigned int strtab)
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{
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struct elf32_sym s;
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unsigned int a;
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char name[30];
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for(a = symtab; a < symtab + size; a += sizeof(s)) {
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seek_read(fd, a, (char *)&s, sizeof(s));
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if(s.st_name != 0) {
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seek_read(fd, strtab + s.st_name, name, sizeof(name));
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if(strcmp(name, "autostart_processes") == 0) {
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return &data.address[s.st_value];
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}
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}
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}
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return NULL;
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}
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/*---------------------------------------------------------------------------*/
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void
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elfloader_init(void)
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{
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elfloader_autostart_processes = NULL;
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}
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/*---------------------------------------------------------------------------*/
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int
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elfloader_load(int fd)
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{
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struct elf32_ehdr ehdr;
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struct elf32_shdr shdr;
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struct elf32_shdr strtable;
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unsigned int strs;
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unsigned int shdrptr;
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unsigned int nameptr;
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char name[17];
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int i;
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unsigned short shdrnum, shdrsize;
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unsigned char using_relas = -1;
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unsigned short textoff = 0, textfaroff = 0, textsize, textfarsize,
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textrelaoff = 0, textrelasize, textfarrelaoff = 0, textfarrelasize;
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unsigned short dataoff = 0, datasize, datarelaoff = 0, datarelasize;
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unsigned short rodataoff = 0, rodatafaroff = 0, rodatasize, rodatafarsize,
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rodatarelaoff = 0, rodatarelasize, rodatafarrelaoff = 0,
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rodatafarrelasize;
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unsigned short symtaboff = 0, symtabsize;
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unsigned short strtaboff = 0, strtabsize;
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unsigned short bsssize = 0;
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struct process **process;
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int ret;
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elfloader_unknown[0] = 0;
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/* The ELF header is located at the start of the buffer. */
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seek_read(fd, 0, (char *)&ehdr, sizeof(ehdr));
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/* Make sure that we have a correct and compatible ELF header. */
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if(memcmp(ehdr.e_ident, elf_magic_header, sizeof(elf_magic_header)) != 0) {
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PRINTF("ELF header problems\n");
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return ELFLOADER_BAD_ELF_HEADER;
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}
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/* Grab the section header. */
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shdrptr = ehdr.e_shoff;
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seek_read(fd, shdrptr, (char *)&shdr, sizeof(shdr));
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/* Get the size and number of entries of the section header. */
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shdrsize = ehdr.e_shentsize;
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shdrnum = ehdr.e_shnum;
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PRINTF("Section header: size %d num %d\n", shdrsize, shdrnum);
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/* The string table section: holds the names of the sections. */
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seek_read(fd, ehdr.e_shoff + shdrsize * ehdr.e_shstrndx,
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(char *)&strtable, sizeof(strtable));
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/*
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* Get a pointer to the actual table of strings. This table holds
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* the names of the sections, not the names of other symbols in the
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* file (these are in the sybtam section).
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*/
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strs = strtable.sh_offset;
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PRINTF("Strtable offset %d\n", strs);
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/*
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* Go through all sections and pick out the relevant ones. The
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* ".text" and ".far.text" segments holds the actual code from
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* the ELF file. The ".data" segment contains initialized data.
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* The ".bss" segment holds the size of the unitialized data segment.
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* The ".rodata" and ".far.rodata" segments contains constant data.
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* The ".rela[a].text" and ".rela[a].far.text" segments contains
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* relocation information for the contents of the ".text" and
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* ".far.text" segments, respectively. The ".rela[a].rodata" and
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* ".rela[a].far.rodata" segments contains relocation information
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* for the contents of the ".rodata" and ".far.rodata" segments,
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* respectively. The ".rela[a].data" segment contains relocation
|
||||
* information for the contents of the ".data" segment. The ".symtab"
|
||||
* segment contains the symbol table for this file. The ".strtab"
|
||||
* segment points to the actual string names used by the symbol table.
|
||||
*
|
||||
* In addition to grabbing pointers to the relevant sections, we
|
||||
* also save the section number for resolving addresses in the
|
||||
* relocator code.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Initialize the segment sizes to zero so that we can check if
|
||||
* their sections was found in the file or not.
|
||||
*/
|
||||
textsize = textfarsize = textrelasize = textfarrelasize =
|
||||
datasize = datarelasize = rodatasize = rodatafarsize =
|
||||
rodatarelasize = rodatafarrelasize = symtabsize = strtabsize = 0;
|
||||
|
||||
bss.number = data.number = rodata.number = rodatafar.number =
|
||||
text.number = textfar.number = -1;
|
||||
|
||||
shdrptr = ehdr.e_shoff;
|
||||
for(i = 0; i < shdrnum; ++i) {
|
||||
seek_read(fd, shdrptr, (char *)&shdr, sizeof(shdr));
|
||||
|
||||
/* The name of the section is contained in the strings table. */
|
||||
nameptr = strs + shdr.sh_name;
|
||||
seek_read(fd, nameptr, name, sizeof(name));
|
||||
PRINTF("Section shdrptr 0x%x, %d + %d type %d\n",
|
||||
shdrptr,
|
||||
strs, shdr.sh_name,
|
||||
(int)shdr.sh_type);
|
||||
/*
|
||||
* Match the name of the section with a predefined set of names
|
||||
* (.text, .far.text, .data, .bss, .rodata, .far.rodata, .rela.text, .rela.far.text,
|
||||
* .rela.data, .rela.rodata, .rela.far.rodata, .symtab, and .strtab).
|
||||
*/
|
||||
|
||||
if(shdr.sh_type == SHT_SYMTAB) {
|
||||
PRINTF("symtab\n");
|
||||
symtaboff = shdr.sh_offset;
|
||||
symtabsize = shdr.sh_size;
|
||||
} else if(shdr.sh_type == SHT_STRTAB) {
|
||||
PRINTF("strtab\n");
|
||||
strtaboff = shdr.sh_offset;
|
||||
strtabsize = shdr.sh_size;
|
||||
} else if(strncmp(name, ".text", 5) == 0) {
|
||||
textoff = shdr.sh_offset;
|
||||
textsize = shdr.sh_size;
|
||||
text.number = i;
|
||||
text.offset = textoff;
|
||||
} else if(strncmp(name, ".far.text", 9) == 0) {
|
||||
textfaroff = shdr.sh_offset;
|
||||
textfarsize = shdr.sh_size;
|
||||
textfar.number = i;
|
||||
textfar.offset = textfaroff;
|
||||
} else if(strncmp(name, ".rel.text", 9) == 0) {
|
||||
using_relas = 0;
|
||||
textrelaoff = shdr.sh_offset;
|
||||
textrelasize = shdr.sh_size;
|
||||
} else if(strncmp(name, ".rela.text", 10) == 0) {
|
||||
using_relas = 1;
|
||||
textrelaoff = shdr.sh_offset;
|
||||
textrelasize = shdr.sh_size;
|
||||
} else if(strncmp(name, ".rela.far.text", 14) == 0) {
|
||||
using_relas = 1;
|
||||
textfarrelaoff = shdr.sh_offset;
|
||||
textfarrelasize = shdr.sh_size;
|
||||
} else if(strncmp(name, ".data", 5) == 0) {
|
||||
dataoff = shdr.sh_offset;
|
||||
datasize = shdr.sh_size;
|
||||
data.number = i;
|
||||
data.offset = dataoff;
|
||||
} else if(strncmp(name, ".rodata", 7) == 0) {
|
||||
/* read-only data handled the same way as regular text section */
|
||||
rodataoff = shdr.sh_offset;
|
||||
rodatasize = shdr.sh_size;
|
||||
rodata.number = i;
|
||||
rodata.offset = rodataoff;
|
||||
} else if(strncmp(name, ".far.rodata", 11) == 0) {
|
||||
rodatafaroff = shdr.sh_offset;
|
||||
rodatafarsize = shdr.sh_size;
|
||||
rodatafar.number = i;
|
||||
rodatafar.offset = rodataoff;
|
||||
} else if(strncmp(name, ".rel.rodata", 11) == 0) {
|
||||
/* using elf32_rel instead of rela */
|
||||
using_relas = 0;
|
||||
rodatarelaoff = shdr.sh_offset;
|
||||
rodatarelasize = shdr.sh_size;
|
||||
} else if(strncmp(name, ".rela.rodata", 12) == 0) {
|
||||
using_relas = 1;
|
||||
rodatarelaoff = shdr.sh_offset;
|
||||
rodatarelasize = shdr.sh_size;
|
||||
} else if(strncmp(name, ".rela.far.rodata", 16) == 0) {
|
||||
using_relas = 1;
|
||||
rodatafarrelaoff = shdr.sh_offset;
|
||||
rodatafarrelasize = shdr.sh_size;
|
||||
} else if(strncmp(name, ".rel.data", 9) == 0) {
|
||||
/* using elf32_rel instead of rela */
|
||||
using_relas = 0;
|
||||
datarelaoff = shdr.sh_offset;
|
||||
datarelasize = shdr.sh_size;
|
||||
} else if(strncmp(name, ".rela.data", 10) == 0) {
|
||||
using_relas = 1;
|
||||
datarelaoff = shdr.sh_offset;
|
||||
datarelasize = shdr.sh_size;
|
||||
} else if(strncmp(name, ".bss", 4) == 0) {
|
||||
bsssize = shdr.sh_size;
|
||||
bss.number = i;
|
||||
bss.offset = 0;
|
||||
}
|
||||
|
||||
/* Move on to the next section header. */
|
||||
shdrptr += shdrsize;
|
||||
}
|
||||
if(symtabsize == 0) {
|
||||
return ELFLOADER_NO_SYMTAB;
|
||||
}
|
||||
if(strtabsize == 0) {
|
||||
return ELFLOADER_NO_STRTAB;
|
||||
}
|
||||
if(textfarsize == 0) {
|
||||
return ELFLOADER_NO_TEXT;
|
||||
}
|
||||
|
||||
PRINTF("before allocate ram\n");
|
||||
bss.address = (char *)elfloader_arch_allocate_ram(bsssize + datasize);
|
||||
data.address = (char *)bss.address + bsssize;
|
||||
PRINTF("before allocate rom\n");
|
||||
textfar.address = (char *)elfloader_arch_allocate_rom(textfarsize + rodatafarsize);
|
||||
rodatafar.address = (char *)textfar.address + textfarsize;
|
||||
|
||||
PRINTF("bss base address: bss.address = 0x%08x\n", bss.address);
|
||||
PRINTF("data base address: data.address = 0x%08x\n", data.address);
|
||||
PRINTF("textfar base address: textfar.address = 0x%08x\n", textfar.address);
|
||||
PRINTF("rodatafar base address: rodatafar.address = 0x%08x\n", rodatafar.address);
|
||||
|
||||
/* If we have text segment relocations, we process them. */
|
||||
PRINTF("elfloader: relocate textfar\n");
|
||||
if(textfarrelasize > 0) {
|
||||
ret = relocate_section(fd,
|
||||
textfarrelaoff, textfarrelasize,
|
||||
textfaroff,
|
||||
textfar.address,
|
||||
strs,
|
||||
strtaboff,
|
||||
symtaboff, symtabsize, using_relas);
|
||||
if(ret != ELFLOADER_OK) {
|
||||
return ret;
|
||||
}
|
||||
}
|
||||
|
||||
/* If we have any rodata segment relocations, we process them too. */
|
||||
PRINTF("elfloader: relocate rodata\n");
|
||||
if(rodatafarrelasize > 0) {
|
||||
ret = relocate_section(fd,
|
||||
rodatafarrelaoff, rodatafarrelasize,
|
||||
rodatafaroff,
|
||||
rodatafar.address,
|
||||
strs,
|
||||
strtaboff,
|
||||
symtaboff, symtabsize, using_relas);
|
||||
if(ret != ELFLOADER_OK) {
|
||||
PRINTF("elfloader: data failed\n");
|
||||
return ret;
|
||||
}
|
||||
}
|
||||
|
||||
/* If we have any data segment relocations, we process them too. */
|
||||
PRINTF("elfloader: relocate data\n");
|
||||
if(datarelasize > 0) {
|
||||
ret = relocate_section(fd,
|
||||
datarelaoff, datarelasize,
|
||||
dataoff,
|
||||
data.address,
|
||||
strs,
|
||||
strtaboff,
|
||||
symtaboff, symtabsize, using_relas);
|
||||
if(ret != ELFLOADER_OK) {
|
||||
PRINTF("elfloader: data failed\n");
|
||||
return ret;
|
||||
}
|
||||
}
|
||||
|
||||
/* Write text and rodata segment into flash and data segment into RAM. */
|
||||
elfloader_arch_write_rom(fd, textfaroff, textfarsize, textfar.address);
|
||||
elfloader_arch_write_rom(fd, rodatafaroff, rodatafarsize, rodatafar.address);
|
||||
|
||||
memset(bss.address, 0, bsssize);
|
||||
seek_read(fd, dataoff, data.address, datasize);
|
||||
|
||||
PRINTF("elfloader: autostart search\n");
|
||||
process = (struct 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 = (struct process **)find_program_processes(fd, symtaboff,
|
||||
symtabsize, strtaboff);
|
||||
if(process != NULL) {
|
||||
PRINTF("elfloader: FOUND PRG\n");
|
||||
}
|
||||
return ELFLOADER_NO_STARTPOINT;
|
||||
}
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void *
|
||||
elfloader_arch_allocate_ram(int size)
|
||||
{
|
||||
return datamemory;
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void *
|
||||
elfloader_arch_allocate_rom(int size)
|
||||
{
|
||||
#if ELFLOADER_CONF_TEXT_IN_ROM
|
||||
/* Return an 512-byte aligned pointer. */
|
||||
return (char *)
|
||||
((unsigned long)&textmemory[0] & 0xfffffe00) +
|
||||
(((unsigned long)&textmemory[0] & 0x1ff) == 0 ? 0 : 0x200);
|
||||
#else /* ELFLOADER_CONF_TEXT_IN_ROM */
|
||||
return textmemory;
|
||||
#endif /* ELFLOADER_CONF_TEXT_IN_ROM */
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
#define READSIZE 32
|
||||
void
|
||||
elfloader_arch_write_rom(int fd, unsigned short textoff, unsigned int size, char *mem)
|
||||
{
|
||||
#if ELFLOADER_CONF_TEXT_IN_ROM
|
||||
int i;
|
||||
unsigned int ptr;
|
||||
unsigned short *flashptr;
|
||||
|
||||
flash_setup();
|
||||
|
||||
flashptr = (unsigned short *)mem;
|
||||
|
||||
cfs_seek(fd, textoff, CFS_SEEK_SET);
|
||||
for(ptr = 0; ptr < size; ptr += READSIZE) {
|
||||
|
||||
/* Read data from file into RAM. */
|
||||
cfs_read(fd, (unsigned char *)datamemory, READSIZE);
|
||||
|
||||
/* Clear flash page on 512 byte boundary. */
|
||||
if((((unsigned short)flashptr) & 0x01ff) == 0) {
|
||||
flash_clear(flashptr);
|
||||
}
|
||||
|
||||
/*
|
||||
* Burn data from RAM into flash ROM. Flash is burned one 16-bit
|
||||
* word at a time, so we need to be careful when incrementing
|
||||
* pointers. The flashptr is already a short pointer, so
|
||||
* incrementing it by one will actually increment the address by
|
||||
* two.
|
||||
*/
|
||||
for(i = 0; i < READSIZE / 2; ++i) {
|
||||
flash_write(flashptr, ((unsigned short *)datamemory)[i]);
|
||||
++flashptr;
|
||||
}
|
||||
}
|
||||
|
||||
flash_done();
|
||||
#else /* ELFLOADER_CONF_TEXT_IN_ROM */
|
||||
cfs_seek(fd, textoff, CFS_SEEK_SET);
|
||||
cfs_read(fd, (unsigned char *)mem, size);
|
||||
#endif /* ELFLOADER_CONF_TEXT_IN_ROM */
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/* Relocate an MSP430X ELF section. */
|
||||
void
|
||||
elfloader_arch_relocate(int fd, unsigned int sectionoffset,
|
||||
char *sectionaddr,
|
||||
struct elf32_rela *rela, char *addr)
|
||||
{
|
||||
unsigned int type;
|
||||
unsigned char instr[2];
|
||||
|
||||
type = ELF32_R_TYPE(rela->r_info);
|
||||
addr += rela->r_addend;
|
||||
|
||||
switch(type) {
|
||||
case R_MSP430_16:
|
||||
case R_MSP430_16_PCREL:
|
||||
case R_MSP430_16_BYTE:
|
||||
case R_MSP430_16_PCREL_BYTE:
|
||||
cfs_seek(fd, sectionoffset + rela->r_offset, CFS_SEEK_SET);
|
||||
cfs_write(fd, (char *)&addr, 2);
|
||||
break;
|
||||
case R_MSP430_32:
|
||||
cfs_seek(fd, sectionoffset + rela->r_offset, CFS_SEEK_SET);
|
||||
cfs_write(fd, (char *)&addr, 2);
|
||||
break;
|
||||
case R_MSP430X_S:
|
||||
case R_MSP430X_S_BYTE:
|
||||
/* src(19:16) located at positions 11:8 of opcode */
|
||||
/* src(15:0) located just after opcode */
|
||||
cfs_seek(fd, sectionoffset + rela->r_offset, CFS_SEEK_SET);
|
||||
cfs_read(fd, instr, 2);
|
||||
instr[1] = (int)(instr[1]) & 0xf0 | (((long int)addr >> 8) & 0x0f00);
|
||||
instr[0] = (int)(instr[0]) & 0xff;
|
||||
cfs_seek(fd, sectionoffset + rela->r_offset, CFS_SEEK_SET);
|
||||
cfs_write(fd, instr, 2);
|
||||
cfs_write(fd, (char *)&addr, 2);
|
||||
break;
|
||||
case R_MSP430X_D:
|
||||
case R_MSP430X_PCREL_D:
|
||||
case R_MSP430X_D_BYTE:
|
||||
/* dst(19:16) located at positions 3:0 of opcode */
|
||||
/* dst(15:0) located just after opcode */
|
||||
cfs_seek(fd, sectionoffset + rela->r_offset, CFS_SEEK_SET);
|
||||
cfs_read(fd, instr, 2);
|
||||
instr[1] = (int)(instr[1]) & 0xff;
|
||||
instr[0] = (int)(instr[0]) & 0xf0 | (((long int)addr >> 16) & 0x000f);
|
||||
cfs_seek(fd, sectionoffset + rela->r_offset, CFS_SEEK_SET);
|
||||
cfs_write(fd, instr, 2);
|
||||
cfs_write(fd, (char *)&addr, 2);
|
||||
break;
|
||||
case R_MSP430X_PCREL_SRC_BYTE:
|
||||
case R_MSP430X_SRC_BYTE:
|
||||
case R_MSP430X_PCREL_SRC:
|
||||
case R_MSP430X_SRC:
|
||||
/* src(19:16) located at positions 10:7 of extension word */
|
||||
/* src(15:0) located just after opcode */
|
||||
cfs_seek(fd, sectionoffset + rela->r_offset, CFS_SEEK_SET);
|
||||
cfs_read(fd, instr, 2);
|
||||
/* 4 most-significant bits */
|
||||
instr[1] = (int)(instr[1]) & 0xf8 | (((long int)addr >> 9) & 0x0780);
|
||||
instr[0] = (int)(instr[0]) & 0x7f | (((long int)addr >> 9) & 0x0780);
|
||||
cfs_seek(fd, sectionoffset + rela->r_offset, CFS_SEEK_SET);
|
||||
cfs_write(fd, instr, 2);
|
||||
/* 16 least-significant bits */
|
||||
cfs_seek(fd, sectionoffset + rela->r_offset + 0x04, CFS_SEEK_SET);
|
||||
cfs_write(fd, (char *)&addr, 2);
|
||||
break;
|
||||
case R_MSP430X_DST_BYTE:
|
||||
case R_MSP430X_PCREL_DST_BYTE:
|
||||
case R_MSP430X_DST:
|
||||
case R_MSP430X_PCREL_DST:
|
||||
/* dst(19:16) located at positions 3:0 of extension word */
|
||||
/* dst(15:0) located just after opcode */
|
||||
cfs_seek(fd, sectionoffset + rela->r_offset, CFS_SEEK_SET);
|
||||
cfs_read(fd, instr, 2);
|
||||
instr[1] = (int)(instr[1]) & 0xff;
|
||||
instr[0] = (int)(instr[0]) & 0xf0 | (((long int)addr >> 16) & 0x000f);
|
||||
cfs_seek(fd, sectionoffset + rela->r_offset, CFS_SEEK_SET);
|
||||
cfs_write(fd, instr, 2);
|
||||
cfs_seek(fd, sectionoffset + rela->r_offset + 0x04, CFS_SEEK_SET);
|
||||
cfs_write(fd, (char *)&addr, 2);
|
||||
break;
|
||||
case R_MSP430X_DST_2ND:
|
||||
case R_MSP430X_PCREL_DST_2ND:
|
||||
case R_MSP430X_DST_2ND_BYTE:
|
||||
case R_MSP430X_PCREL_DST_2ND_BYTE:
|
||||
/* dst(19:16) located at positions 3:0 of extension word */
|
||||
/* dst(15:0) located after src(15:0) */
|
||||
cfs_seek(fd, sectionoffset + rela->r_offset, CFS_SEEK_SET);
|
||||
cfs_read(fd, instr, 2);
|
||||
instr[1] = (int)(instr[1]) & 0xff;
|
||||
instr[0] = (int)(instr[0]) & 0xf0 | (((long int)addr >> 16) & 0x000f);
|
||||
cfs_seek(fd, sectionoffset + rela->r_offset, CFS_SEEK_SET);
|
||||
cfs_write(fd, instr, 2);
|
||||
cfs_seek(fd, sectionoffset + rela->r_offset + 0x06, CFS_SEEK_SET);
|
||||
cfs_write(fd, (char *)&addr, 2);
|
||||
break;
|
||||
case R_MSP430X_INDXD:
|
||||
case R_MSP430X_PCREL_INDXD:
|
||||
cfs_seek(fd, sectionoffset + rela->r_offset + 0x02, CFS_SEEK_SET);
|
||||
cfs_write(fd, (char *)&addr, 2);
|
||||
break;
|
||||
default:
|
||||
PRINTF("Unknown relocation type!\n");
|
||||
break;
|
||||
}
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
|
|
@ -37,6 +37,10 @@ MSP430 = msp430.c flash.c clock.c leds.c leds-arch.c \
|
|||
UIPDRIVERS = me.c me_tabs.c slip.c crc16.c
|
||||
ELFLOADER = elfloader.c elfloader-msp430.c symtab.c
|
||||
|
||||
ifeq ($(TARGET_MEMORY_MODEL),large)
|
||||
ELFLOADER = elfloader-msp430x.c symtab.c
|
||||
endif
|
||||
|
||||
CONTIKI_TARGET_SOURCEFILES += $(MSP430) \
|
||||
$(SYSAPPS) $(ELFLOADER) \
|
||||
$(UIPDRIVERS)
|
||||
|
|
@ -149,10 +153,16 @@ endif
|
|||
ifndef IAR
|
||||
ifneq (,$(findstring 4.7.,$(shell msp430-gcc -dumpversion)))
|
||||
ifdef CPU_HAS_MSP430X
|
||||
TARGET_MEMORY_MODEL ?= medium
|
||||
ifeq ($(TARGET_MEMORY_MODEL),large)
|
||||
CFLAGS += -mmemory-model=$(TARGET_MEMORY_MODEL)
|
||||
CFLAGS += -mcode-region=far -mdata-region=far -msr20 -mc20 -md20
|
||||
LDFLAGS += -mmemory-model=$(TARGET_MEMORY_MODEL) -mcode-region=far -mdata-region=far -msr20 -mc20 -md20
|
||||
else
|
||||
TARGET_MEMORY_MODEL = medium
|
||||
CFLAGS += -mmemory-model=$(TARGET_MEMORY_MODEL)
|
||||
CFLAGS += -ffunction-sections -fdata-sections -mcode-region=any
|
||||
LDFLAGS += -mmemory-model=$(TARGET_MEMORY_MODEL) -Wl,-gc-sections
|
||||
endif
|
||||
endif
|
||||
endif
|
||||
endif
|
||||
|
|
|
|||
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Reference in New Issue