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//
// Copyright (c) 2008-2009, Apple Inc. All rights reserved.
//
// All rights reserved. This program and the accompanying materials
// are licensed and made available under the terms and conditions of the BSD License
// which accompanies this distribution. The full text of the license may be found at
// http://opensource.org/licenses/bsd-license.php
//
// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
//
define /R int compare_guid(guid1, guid2)
unsigned char *guid1;
unsigned char *guid2;
{
return strncmp(guid1, guid2, 16);
}
.
define /R unsigned char * find_system_table(mem_start, mem_size)
unsigned char *mem_start;
unsigned long mem_size;
{
unsigned char *mem_ptr;
mem_ptr = mem_start + mem_size;
do
{
mem_ptr -= 0x400000; // 4 MB
if (strncmp(mem_ptr, "IBI SYST", 8) == 0)
{
return *(unsigned long *)(mem_ptr + 8); // EfiSystemTableBase
}
} while (mem_ptr > mem_start);
return 0;
}
.
define /R unsigned char * find_debug_info_table_header(system_table)
unsigned char *system_table;
{
unsigned long configuration_table_entries;
unsigned char *configuration_table;
unsigned long index;
unsigned char debug_table_guid[16];
// Fill in the debug table's guid
debug_table_guid[ 0] = 0x77;
debug_table_guid[ 1] = 0x2E;
debug_table_guid[ 2] = 0x15;
debug_table_guid[ 3] = 0x49;
debug_table_guid[ 4] = 0xDA;
debug_table_guid[ 5] = 0x1A;
debug_table_guid[ 6] = 0x64;
debug_table_guid[ 7] = 0x47;
debug_table_guid[ 8] = 0xB7;
debug_table_guid[ 9] = 0xA2;
debug_table_guid[10] = 0x7A;
debug_table_guid[11] = 0xFE;
debug_table_guid[12] = 0xFE;
debug_table_guid[13] = 0xD9;
debug_table_guid[14] = 0x5E;
debug_table_guid[15] = 0x8B;
configuration_table_entries = *(unsigned long *)(system_table + 64);
configuration_table = *(unsigned long *)(system_table + 68);
for (index = 0; index < configuration_table_entries; index++)
{
if (compare_guid(configuration_table, debug_table_guid) == 0)
{
return *(unsigned long *)(configuration_table + 16);
}
configuration_table += 20;
}
return 0;
}
.
define /R int valid_pe_header(header)
unsigned char *header;
{
if ((header[0x00] == 'M') &&
(header[0x01] == 'Z') &&
(header[0x80] == 'P') &&
(header[0x81] == 'E'))
{
return 1;
}
return 0;
}
.
define /R unsigned long pe_headersize(header)
unsigned char *header;
{
unsigned long *size;
size = header + 0x00AC;
return *size;
}
.
define /R unsigned char *pe_filename(header)
unsigned char *header;
{
unsigned long *debugOffset;
unsigned char *stringOffset;
if (valid_pe_header(header))
{
debugOffset = header + 0x0128;
stringOffset = header + *debugOffset + 0x002C;
return stringOffset;
}
return 0;
}
.
define /R int char_is_valid(c)
unsigned char c;
{
if (c >= 32 && c < 127)
return 1;
return 0;
}
.
define /R write_symbols_file(filename, mem_start, mem_size)
unsigned char *filename;
unsigned char *mem_start;
unsigned long mem_size;
{
unsigned char *system_table;
unsigned char *debug_info_table_header;
unsigned char *debug_info_table;
unsigned long debug_info_table_size;
unsigned long index;
unsigned char *debug_image_info;
unsigned char *loaded_image_protocol;
unsigned char *image_base;
unsigned char *debug_filename;
unsigned long header_size;
int status;
system_table = find_system_table(mem_start, mem_size);
if (system_table == 0)
{
return;
}
status = fopen(88, filename, "w");
debug_info_table_header = find_debug_info_table_header(system_table);
debug_info_table = *(unsigned long *)(debug_info_table_header + 8);
debug_info_table_size = *(unsigned long *)(debug_info_table_header + 4);
for (index = 0; index < (debug_info_table_size * 4); index += 4)
{
debug_image_info = *(unsigned long *)(debug_info_table + index);
if (debug_image_info == 0)
{
break;
}
loaded_image_protocol = *(unsigned long *)(debug_image_info + 4);
image_base = *(unsigned long *)(loaded_image_protocol + 32);
debug_filename = pe_filename(image_base);
header_size = pe_headersize(image_base);
$fprintf 88, "%s 0x%08x\n", debug_filename, image_base + header_size$;
}
fclose(88);
}
.
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