Chameleon

Chameleon Commit Details

Date:2010-11-26 17:59:54 (13 years 4 months ago)
Author:Evan Lojewski
Commit:649
Parents: 648
Message:Module changes
Changes:
M/branches/meklort/i386/boot2/boot.c
M/branches/meklort/i386/boot2/modules.c
M/branches/meklort/i386/boot2/Makefile
M/branches/meklort/i386/boot2/modules.h

File differences

branches/meklort/i386/boot2/boot.c
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␉␊
// Load boot.plist config file␊
status = loadSystemConfig(&bootInfo->bootConfig);␊
␉␊
␊
if (getBoolForKey(kQuietBootKey, &quiet, &bootInfo->bootConfig) && quiet) {␊
gBootMode |= kBootModeQuiet;␊
}␊
␉const char *val;␊
␉int len;␊
␉␊
␉if (!loadConfigFile("System/Library/CoreServices/SystemVersion.plist", &systemVersion))␊
␉if (!loadConfigFile("/System/Library/CoreServices/SystemVersion.plist", &systemVersion))␊
␉{␊
␉␉valid = true;␊
␉}␊
␉else if (!loadConfigFile("System/Library/CoreServices/ServerVersion.plist", &systemVersion))␊
␉else if (!loadConfigFile("/System/Library/CoreServices/ServerVersion.plist", &systemVersion))␊
␉{␊
␉␉valid = true;␊
␉}␊
branches/meklort/i386/boot2/modules.c
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␉// Intialize module system␊
␉if(symbols_module_start == (void*)0xFFFFFFFF)␊
␉{␊
␉␉printf("Module system not compiled in\n");␊
␉␉DBG("Module system not compiled in\n");␊
␉␉load_module(SYMBOLS_MODULE);␊
␉␉␊
␉␉lookup_symbol = (void*)lookup_all_symbols(SYMBOL_LOOKUP_SYMBOL);␊
␉␉␊
␉␉if((UInt32)lookup_symbol != 0xFFFFFFFF)␊
␉␉{␊
␉␉␉return 1;␊
␉␉}␊
␉␉␊
␉␉return 0;␊
␉}␊
␊
␉␉␊
␉␉switch ((loadCommand->cmd & 0x7FFFFFFF))␊
␉␉{␊
␉␉␉␉// TODO: sepeare function to handel appropriate sections␊
␉␉␉case LC_SYMTAB:␊
␉␉␉␉symtabCommand = binary + binaryIndex;␊
␉␉␉␉break;␊
␉␉␉␉␉␉}␉␉␉␉␉␊
␉␉␉␉␉}␊
␉␉␉␉}␊
␉␉␉␉else if(strcmp("__DATA", segCommand->segname) == 0)␊
␉␉␉␉{␊
␉␉␉␉␉UInt32 sectionIndex;␊
␉␉␉␉␉␊
␉␉␉␉␉sectionIndex = sizeof(struct segment_command);␊
␉␉␉␉␉␊
␉␉␉␉␉struct section *sect;␊
␉␉␉␉␉␊
␉␉␉␉␉while(sectionIndex < segCommand->cmdsize)␊
␉␉␉␉␉{␊
␉␉␉␉␉␉sect = binary + binaryIndex + sectionIndex;␊
␉␉␉␉␉␉␊
␉␉␉␉␉␉sectionIndex += sizeof(struct section);␊
␉␉␉␉␉␉␊
␉␉␉␉␉␉␊
␉␉␉␉␉␉if(strcmp("__bss", sect->sectname) == 0)␊
␉␉␉␉␉␉{␊
␉␉␉␉␉␉␉// __TEXT,__text found, save the offset and address for when looking for the calls.␊
␉␉␉␉␉␉␉//printf("__DATA,__bss found.\n"); getc();␊
␉␉␉␉␉␉␉break;␊
␉␉␉␉␉␉}␉␉␉␉␉␊
␉␉␉␉␉}␊
␉␉␉␉␉␊
␉␉␉␉}␊
␊
␉␉␉␉break;␊
␉␉␉case LC_SEGMENT_64:␉// 64bit macho's␊
␉␉␉␉segCommand64 = binary + binaryIndex;␊
␉␉␉␉␉␉}␉␉␉␉␉␊
␉␉␉␉␉}␊
␉␉␉␉}␊
␉␉␉␉else if(strcmp("__DATA", segCommand->segname) == 0)␊
␉␉␉␉{␊
␉␉␉␉␉UInt32 sectionIndex;␊
␉␉␉␉␉␊
␉␉␉␉␉sectionIndex = sizeof(struct segment_command_64);␊
␉␉␉␉␉␊
␉␉␉␉␉struct section_64 *sect;␊
␉␉␉␉␉␊
␉␉␉␉␉while(sectionIndex < segCommand->cmdsize)␊
␉␉␉␉␉{␊
␉␉␉␉␉␉sect = binary + binaryIndex + sectionIndex;␊
␉␉␉␉␉␉␊
␉␉␉␉␉␉sectionIndex += sizeof(struct section);␊
␉␉␉␉␉␉␊
␉␉␉␉␉␉␊
␉␉␉␉␉␉if(strcmp("__bss", sect->sectname) == 0)␊
␉␉␉␉␉␉{␊
␉␉␉␉␉␉␉// __TEXT,__text found, save the offset and address for when looking for the calls.␊
␉␉␉␉␉␉␉//printf("__DATA,__bss found.\n"); getc();␊
␉␉␉␉␉␉␉break;␊
␉␉␉␉␉␉}␉␉␉␉␉␊
␉␉␉␉␉}␊
␉␉␉␉␉␊
␉␉␉␉}␊
␉␉␉␉␊
␉␉␉␉␊
␉␉␉␉break;␊
␉␉␉␉␊
␉␉␉case LC_DYSYMTAB:␊
␉char* binary = (char*)addr;␊
␉if(addr != 0xFFFFFFFF)␊
␉{␊
␉␉DBG("Replacing %s to point to 0x%x\n", symbol, newAddress);␊
␉␉*binary++ = 0xFF;␉// Jump␊
␉␉*binary++ = 0x25;␉// Long Jump␊
␉␉*((UInt32*)binary) = (UInt32)jumpPointer;␊
branches/meklort/i386/boot2/modules.h
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#ifndef __BOOT_MODULES_H␊
#define __BOOT_MODULES_H␊
␊
#define SYMBOLS_MODULE "Symbols.dylib"␊
␊
#define SYMBOL_DYLD_STUB_BINDER␉"dyld_stub_binder"␊
#define SYMBOL_LOOKUP_SYMBOL␉"_lookup_symbol"␊
#define STUB_ENTRY_SIZE␉6␊
␊
#define SECT_NON_LAZY_SYMBOL_PTR␉"__nl_symbol_ptr"␊
#define SECT_SYMBOL_STUBS␉␉␉"__symbol_stub"␊
␊
␊
#define VALID_FUNCTION(__x__)␉(__x__ && (void*)__x__ != (void*)0xFFFFFFFF)␊
␊
extern unsigned long long textAddress;␊
extern unsigned long long textSection;␊
␊
␉struct moduleHook_t* next;␊
} moduleHook_t;␊
␊
#define SYMBOLS_MODULE "Symbols.dylib"␊
␊
#define SYMBOL_DYLD_STUB_BINDER␉"dyld_stub_binder"␊
#define SYMBOL_LOOKUP_SYMBOL␉"_lookup_symbol"␊
#define STUB_ENTRY_SIZE␉6␊
␊
#define SECT_NON_LAZY_SYMBOL_PTR␉"__nl_symbol_ptr"␊
#define SECT_SYMBOL_STUBS␉␉␉"__symbol_stub"␊
␊
␊
␊
int init_module_system();␊
void load_all_modules();␊
␊
branches/meklort/i386/boot2/Makefile
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␊
␉@make embed_symbols␉␉# this is done in a sub process after boot.sys exists so the strings are populated correctly␊
␊
␉${RM} $(SYMROOT)/${SYMBOLS_MODULE}␊
␉##${RM} $(SYMROOT)/${SYMBOLS_MODULE}␊
␊
␉size $(SYMROOT)/boot.sys␊
␉ls -l $(SYMROOT)/boot␊
␉echo ******* Patching at $(PATCH_ADDR) ******␊
␉stat -f%z $(SYMROOT)/boot | perl -ane "print pack('V',@F[0]);" | dd conv=notrunc of=${SYMROOT}/boot_embeded.sys bs=1 count=4 seek=$(PATCH_ADDR)␉␊
␊
␉machOconv $(SYMROOT)/boot_embeded.sys $(SYMROOT)/boot␊
␉machOconv $(SYMROOT)/boot_embeded.sys $(SYMROOT)/boot_embeded␊
␊
␊
prompt.o: vers.h␊

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Revision: 649