| 1 |
61 |
csantifort |
/*----------------------------------------------------------------
|
| 2 |
|
|
// //
|
| 3 |
|
|
// elfsplitter.c //
|
| 4 |
|
|
// //
|
| 5 |
|
|
// This file is part of the Amber project //
|
| 6 |
|
|
// http://www.opencores.org/project,amber //
|
| 7 |
|
|
// //
|
| 8 |
|
|
// Description //
|
| 9 |
|
|
// Used by the boot loader to split an elf file and copy it //
|
| 10 |
|
|
// to the correct memory locations ready for execution. //
|
| 11 |
|
|
// //
|
| 12 |
|
|
// Author(s): //
|
| 13 |
|
|
// - Conor Santifort, csantifort.amber@gmail.com //
|
| 14 |
|
|
// //
|
| 15 |
|
|
//////////////////////////////////////////////////////////////////
|
| 16 |
|
|
// //
|
| 17 |
|
|
// Copyright (C) 2010 Authors and OPENCORES.ORG //
|
| 18 |
|
|
// //
|
| 19 |
|
|
// This source file may be used and distributed without //
|
| 20 |
|
|
// restriction provided that this copyright statement is not //
|
| 21 |
|
|
// removed from the file and that any derivative work contains //
|
| 22 |
|
|
// the original copyright notice and the associated disclaimer. //
|
| 23 |
|
|
// //
|
| 24 |
|
|
// This source file is free software; you can redistribute it //
|
| 25 |
|
|
// and/or modify it under the terms of the GNU Lesser General //
|
| 26 |
|
|
// Public License as published by the Free Software Foundation; //
|
| 27 |
|
|
// either version 2.1 of the License, or (at your option) any //
|
| 28 |
|
|
// later version. //
|
| 29 |
|
|
// //
|
| 30 |
|
|
// This source is distributed in the hope that it will be //
|
| 31 |
|
|
// useful, but WITHOUT ANY WARRANTY; without even the implied //
|
| 32 |
|
|
// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR //
|
| 33 |
|
|
// PURPOSE. See the GNU Lesser General Public License for more //
|
| 34 |
|
|
// details. //
|
| 35 |
|
|
// //
|
| 36 |
|
|
// You should have received a copy of the GNU Lesser General //
|
| 37 |
|
|
// Public License along with this source; if not, download it //
|
| 38 |
|
|
// from http://www.opencores.org/lgpl.shtml //
|
| 39 |
|
|
// //
|
| 40 |
|
|
----------------------------------------------------------------*/
|
| 41 |
|
|
|
| 42 |
|
|
#include "amber_registers.h"
|
| 43 |
|
|
#include "address_map.h"
|
| 44 |
|
|
#include "utilities.h"
|
| 45 |
|
|
#include "line-buffer.h"
|
| 46 |
|
|
#include "timer.h"
|
| 47 |
|
|
#include "packet.h"
|
| 48 |
80 |
csantifort |
#include "tcp.h"
|
| 49 |
61 |
csantifort |
#include "telnet.h"
|
| 50 |
|
|
#include "elfsplitter.h"
|
| 51 |
|
|
|
| 52 |
|
|
|
| 53 |
|
|
|
| 54 |
80 |
csantifort |
int elfsplitter (char* inbuf)
|
| 55 |
61 |
csantifort |
{
|
| 56 |
|
|
unsigned int i, j, k;
|
| 57 |
|
|
ElfHeader* elfHeader;
|
| 58 |
|
|
Elf32_Shdr* elfSection;
|
| 59 |
|
|
char *outbuf;
|
| 60 |
|
|
unsigned int outP;
|
| 61 |
|
|
int interrupt_table_written = 0;
|
| 62 |
|
|
int interrupt_table_zero_written = 0;
|
| 63 |
78 |
csantifort |
|
| 64 |
61 |
csantifort |
/* Create buffer to hold interrupt vector memory values
|
| 65 |
|
|
Can't copy these into mem0 locations until ready to pass control
|
| 66 |
|
|
t new program
|
| 67 |
|
|
*/
|
| 68 |
|
|
elf_mem0_g = malloc(sizeof(mem_buf_t));
|
| 69 |
|
|
for(i=0;i<MEM_BUF_ENTRIES;i++)
|
| 70 |
|
|
elf_mem0_g->entry[i].valid = 0;
|
| 71 |
78 |
csantifort |
|
| 72 |
|
|
|
| 73 |
61 |
csantifort |
elfHeader=(ElfHeader*)inbuf;
|
| 74 |
|
|
|
| 75 |
|
|
|
| 76 |
|
|
if (strncmp((char*)elfHeader->e_ident+1,"ELF",3)) {
|
| 77 |
|
|
return(1);
|
| 78 |
|
|
}
|
| 79 |
78 |
csantifort |
|
| 80 |
61 |
csantifort |
if (elfHeader->e_machine != 40) {
|
| 81 |
78 |
csantifort |
print_serial ("%s:L%d ERROR: ELF file not targetting correct processor type.\r\n",
|
| 82 |
|
|
__FILE__, __LINE__);
|
| 83 |
61 |
csantifort |
return(1);
|
| 84 |
|
|
}
|
| 85 |
|
|
|
| 86 |
|
|
|
| 87 |
78 |
csantifort |
for (i=0;i<elfHeader->e_shnum;++i) {
|
| 88 |
|
|
elfSection=(Elf32_Shdr*)(inbuf+elfHeader->e_shoff+elfHeader->e_shentsize*i);
|
| 89 |
|
|
|
| 90 |
|
|
/* section with non-zero bits, can be either text or data */
|
| 91 |
|
|
if (elfSection->sh_type == SHT_PROGBITS && elfSection->sh_size != 0) {
|
| 92 |
|
|
for (j=0; j<elfSection->sh_size; j++) {
|
| 93 |
|
|
k = j + elfSection->sh_offset;
|
| 94 |
|
|
outP = elfSection->sh_addr + j;
|
| 95 |
|
|
|
| 96 |
|
|
/* debug */
|
| 97 |
|
|
if (outP >= ADR_EXEC_BASE)
|
| 98 |
|
|
print_serial("%s:L%d ERROR: 1 outP value 0x%08x\r\n",__FILE__, __LINE__, outP);
|
| 99 |
|
|
else if (outP > MEM_BUF_ENTRIES)
|
| 100 |
|
|
outbuf[outP] = inbuf[k];
|
| 101 |
|
|
else {
|
| 102 |
|
|
elf_mem0_g->entry[outP].valid = 1;
|
| 103 |
|
|
elf_mem0_g->entry[outP].data = inbuf[k];
|
| 104 |
61 |
csantifort |
interrupt_table_written = 1;
|
| 105 |
|
|
}
|
| 106 |
78 |
csantifort |
}
|
| 107 |
|
|
}
|
| 108 |
|
|
|
| 109 |
|
|
if (elfSection->sh_type == SHT_NOBITS && elfSection->sh_size != 0) {
|
| 110 |
|
|
for (j=0; j<elfSection->sh_size; j++) {
|
| 111 |
|
|
outP = j + elfSection->sh_addr;
|
| 112 |
|
|
|
| 113 |
|
|
/* debug */
|
| 114 |
|
|
if (outP >= ADR_EXEC_BASE)
|
| 115 |
|
|
print_serial("%s:L%d ERROR: 2 outP value 0x%08x\r\n",__FILE__, __LINE__, outP);
|
| 116 |
|
|
else if (outP > MEM_BUF_ENTRIES)
|
| 117 |
|
|
outbuf[outP] = 0;
|
| 118 |
|
|
else {
|
| 119 |
|
|
elf_mem0_g->entry[outP].valid = 1;
|
| 120 |
|
|
elf_mem0_g->entry[outP].data = 0;
|
| 121 |
61 |
csantifort |
interrupt_table_zero_written = 1;
|
| 122 |
|
|
}
|
| 123 |
78 |
csantifort |
}
|
| 124 |
|
|
}
|
| 125 |
|
|
}
|
| 126 |
|
|
|
| 127 |
61 |
csantifort |
return 0;
|
| 128 |
|
|
}
|
| 129 |
|
|
|
