Chameleon

Chameleon Commit Details

Date:2010-09-07 01:37:03 (13 years 7 months ago)
Author:Azimutz
Commit:499
Parents: 498
Message:Changed modules loading path to bt(0,0)/Extra/modules, according to booter concept; there's an issue with this, check Modules.txt-->Issues. Minor cosmetic, doc, comment and typo (is_module_laoded) edits.
Changes:
M/branches/azimutz/Chazi/doc-azi/Modules.txt
M/branches/azimutz/Chazi/i386/boot2/modules.h
M/branches/azimutz/Chazi/i386/modules/KernelPatcher/kernel_patcher.c
M/branches/azimutz/Chazi/i386/boot2/boot.c
M/branches/azimutz/Chazi/i386/boot2/boot.h
M/branches/azimutz/Chazi/i386/boot2/modules.c

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branches/azimutz/Chazi/doc-azi/Modules.txt
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␉SSE3 instructions, will benefit of the same treatment!␊
␉Let's just say that the only patch needed by the 925 on Legacy Mode(**) is cpuid_set!␊
␉␊
␉Note: Kernel Patcher can stop working due to changes on the kernel code.␊
␉␊
- HelloWorld.dylib: just a notifier (not mandatory).␊
␊
␊
␊
Issues:␊
␊
- modules may fail to load, if you have the booter on a separate device/partition and try␊
␉to load modules from selected volume. Confirmed on MBR/boot0hfs install only.␊
- the default path for loading modules (/Extra/modules/) is not being respected, the booter␊
␉always checks bt(0,0)/Extra/modules/ instead.␊
␉Anyway, i already intended to change the path due to the concept of this booter␊
␉and so i did it. Of course the problem is still there and needs to be fixed, at least if␊
␉one wants to be able to load modules from selected volume.␊
␊
- the Kernel Patcher can stop working due to changes on the kernel code, though that can be␊
␉"previewed" to some extent. Just so you know what to expect.␊
␊
- this is work in progress; i will add updates as Meklort commits.␊
␊
␉---------------//---------------//---------------␊
␊
␉␊
branches/azimutz/Chazi/i386/boot2/boot.c
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}␊
␊
␉// Intialize module system␊
␉if(init_module_system())␊
␉if (init_module_system())␊
␉{␊
␉␉load_all_modules();␊
␉}␊
branches/azimutz/Chazi/i386/boot2/modules.c
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int init_module_system()␊
{␊
␉// Intialize module system␊
␉if(load_module(SYMBOLS_MODULE))␊
␉if (load_module(SYMBOLS_MODULE))␊
␉{␊
␉␉lookup_symbol = (void*)lookup_all_symbols(SYMBOL_LOOKUP_SYMBOL);␊
␉␉␊
␉␉if((UInt32)lookup_symbol != 0xFFFFFFFF)␊
␉␉if ((UInt32)lookup_symbol != 0xFFFFFFFF)␊
␉␉{␊
␉␉␉return 1;␊
␉␉}␊
* link one module with the other. For dyld to allow this, you must␊
* reference at least one symbol within the module.␊
*/␊
void load_all_modules()␊
void load_all_modules() // called on boot.c␊
{␊
␉char* name;␊
␉long flags;␊
␉long time;␊
␉struct dirstuff* moduleDir = opendir("/Extra/modules/");␊
␉//Azi: Modules.txt-->Issues␊
␉struct dirstuff* moduleDir = opendir("bt(0,0)/Extra/modules/");␊
␉while(readdir(moduleDir, (const char**)&name, &flags, &time) >= 0)␊
␉{␊
␉␉if(strcmp(&name[strlen(name) - sizeof("dylib")], ".dylib") == 0)␊
int load_module(char* module)␊
{␊
␉// Check to see if the module has already been loaded␊
␉if(is_module_laoded(module))␊
␉if(is_module_loaded(module))␊
␉{␊
␉␉// NOTE: Symbols.dylib tries to load twice, this catches it as well␊
␉␉// as when a module links with an already loaded module␊
␉␊
␉char modString[128];␊
␉int fh = -1;␊
␉sprintf(modString, "/Extra/modules/%s", module);␊
␉//Azi: Modules.txt-->Issues␊
␉sprintf(modString, "bt(0,0)/Extra/modules/%s", module);␊
␉fh = open(modString, 0);␊
␉if(fh < 0)␊
␉{␊
␉␊
}␊
␊
int is_module_laoded(const char* name)␊
int is_module_loaded(const char* name)␊
{␊
␉moduleList_t* entry = loadedModules;␊
␉while(entry)␊
branches/azimutz/Chazi/i386/boot2/boot.h
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#define kTestConfigKey␉␉"config"␉␉␉// stringTable.c␊
#define kCanOverrideKey␉␉"CanOverride"␉␉// stringTable.c␊
#define kAutoResolutionKey␉"AutoResolution"␉// boot.c␊
#define kKPatcherKey␉␉"PatchKernel"␉␉// boot.c␊
#define kKPatcherKey␉␉"PatchKernel"␉␉// kernel_patcher.c␊
␊
/*␊
* Flags to the booter and/or kernel - these end with "Flag".␊
branches/azimutz/Chazi/i386/boot2/modules.h
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void bind_macho(void* base, char* bind_stream, UInt32 size);␊
␊
int load_module(char* module);␊
int is_module_laoded(const char* name);␊
int is_module_loaded(const char* name);␊
void module_loaded(const char* name/*, UInt32 version, UInt32 compat*/);␊
␊
long long add_symbol(char* symbol, long long addr, char is64);␊
branches/azimutz/Chazi/i386/modules/KernelPatcher/kernel_patcher.c
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␉bytes[patchLocation + 4] = 0x90;␊
␉printf("0x%X 0x%X 0x%X 0x%X 0x%X\n", bytes[patchLocation ], bytes[patchLocation +1], bytes[patchLocation +2], bytes[patchLocation +3], bytes[patchLocation +4]);␊
␊
␉getc();␊
␉//getc();␊
␉␊
␉// Locate the jump call, so that 10 bytes can be reclamed.␊
␉// NOTE: This will *NOT* be located on pre 10.6.2 kernels␊

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Revision: 499