Chameleon

Chameleon Commit Details

Date:2010-09-03 14:41:06 (13 years 7 months ago)
Author:Azimutz
Commit:486
Parents: 485
Message:Added a key to enable Kernel Patcher module, temporarily defaulting to "true". Killed some compiler warnings from last updates; also dead is the getc(); on HelloWorld.dylib. Doc edit.
Changes:
M/branches/azimutz/Chazi/doc-azi/CHANGES.txt
M/branches/azimutz/Chazi/doc-azi/Modules.txt
M/branches/azimutz/Chazi/i386/modules/KernelPatcher/kernel_patcher.c
M/branches/azimutz/Chazi/i386/libsaio/saio_types.h
M/branches/azimutz/Chazi/i386/boot2/boot.c
M/branches/azimutz/Chazi/i386/boot2/boot.h
M/branches/azimutz/Chazi/i386/modules/HelloWorld/HelloWorld.c

File differences

branches/azimutz/Chazi/doc-azi/CHANGES.txt
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␊
␉␉---------------//---------------//---------------␊
␊
- (rev 480)␊
- (starting at rev 480)␊
Change: Added Meklort's Modules support, plus Kernel Patcher (Kptchr) module.␊
␉␉Check Modules.txt for more info.␊
␉␉Some talk here: http://forum.voodooprojects.org/index.php/topic,1556.0.html␊
␉␉here: http://forum.voodooprojects.org/index.php/topic,1153.0.html␊
␉␉and here: http://forum.voodooprojects.org/index.php/topic,1565.0.html␊
␉␉␊
Note: Only i386 arch is supported at the moment; x86_64 support to be added.␊
␉␉PatchKernel=n disables Kernel Patcher. "Temporarily" enabled by default!!␊
␉␉␊
Note: Only i386 arch is supported at the moment; x86_64 support being added...␊
␊
Motif: ... as if, booting vanilla kernel, is not reason enough!?␊
␊
branches/azimutz/Chazi/doc-azi/Modules.txt
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␉"old" in RC5 world means before rev 168 (atm).␊
␊
How to use?␊
- nothing to do! Modules are loaded at startup, before the Gui loads, providing you place␊
␉them in the correct place (check Issues below).␊
␉␊
- Symbols.dylib is always and the first module loaded. The booter will still perform as␊
␉usual if this module fails to load.␊
- Check if a key is needed to activate the module you pretend to use.␊
␉Modules are loaded at startup, before the Gui loads, providing they are located in␊
␉the right place (check Issues below).␊
␊
␉---------------//---------------//---------------␊
␊
What are modules?␊
- good question! Well, can't add much on the "geek" side... need to study the stuff so␊
␉i don't start dumping bs. The easy answer is they are like plugins, adding/replacing␊
␉integrated on boot file like any other Chameleon function; with Modules support Kptchr␊
␉can now live as a module, freeing the space it occupied on boot file␊
␉(one of module's advantages).␊
␉The booter will still perform as usual if a module fails to load.␊
␉␊
Featured modules:␊
- Symbols.dylib: first and always loaded. No key is foreseen for this module.␊
␉No other module will work if this one fails to load.␊
␊
Kernel Patcher module:␊
- features cpuid_set, commpage_stuff and lapic_init patches (atm).␊
- KernelPatcher.dylib:␊
␉- "will" need PatchKernel=y to be enabled.␊
Note:*** this is still under consideration/testing so, for now the patcher is enabled by default***␊
␉␊
␉- features cpuid_set, commpage_stuff and lapic_init patches (atm).␊
␊
-␉as it is, Kptchr allows my Pentium D 925 to boot vanilla kernel, with the help of␊
␉-legacy flag; to enter x86_64 world i still need to patch the kernel, as the 925 has no␊
␉Supplemental SSE3 instructions. I assume that, the great majority of the legacy/unsupported␊
␉processors with at least SSE3 instructions, will benefit of the same treatment!␊
␉For now let's just say that the only patch needed by the 925 on Legacy Mode(*) is␊
␉cpuid_set!␊
␉- as it is, Kptchr allows my Pentium D 925 to boot vanilla kernel, with the help of␊
␉ -legacy flag; to enter x86_64 world i still need to patch the kernel, as the 925 has␊
␉ no Supplemental SSE3 instructions. I assume that, the great majority of the␊
␉ legacy/unsupported processors with at least 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!␊
␉␊
␉- HelloWorld.dylib: just a notifier, i guess :P␊
␊
(*) For those who "missed" the lesson, Legacy Mode is the mode, 32 bit only cpu's run on OS X.␊
␊
(*) For those who "missed" the lesson, Legacy Mode is the mode 32 bit only cpu's run on OS X.␊
␊
␉---------------//---------------//---------------␊
␊
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.␊
- this is work in progress; i will add updates as Meklort commits and only if they are in␊
␉functional state.␊
␊
␉---------------//---------------//---------------␊
␊
␊
Smith@@'s news :D␊
␊
« Sent to: Azimutz on: Fri 03/09/2010 at 05:55:08 »␊
␊
␉␉---------------//---------------//---------------␊
␊
Huge thanks fly out to Meklort for this precious work!␊
␊
␉␉---------------//---------------//---------------␊
␊
␊
␊
Azimutz␊
␊
␊
branches/azimutz/Chazi/i386/libsaio/saio_types.h
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enum {␊
kNetworkDeviceType = kBIOSDevTypeNetwork,␊
kBlockDeviceType = kBIOSDevTypeHardDrive␊
} gBootFileType_t; //Azi: kernel patcher module, rev 307␊
};// gBootFileType_t; //Kptchr module, rev 307␊
␊
enum {␊
kCursorTypeHidden = 0x0100,␊
branches/azimutz/Chazi/i386/boot2/boot.c
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bool tryresume;␊
bool tryresumedefault;␊
bool forceresume;␊
␉␉bool patchKernel = true; //Kptchr - temporarely set to true, ude to testing!␊
␊
// additional variable for testing alternate kernel image locations on boot helper partitions.␊
char bootFileSpec[512];␊
} else {␊
/* Won't return if successful. */␊
␉␉␉// Notify modules that ExecKernel is about to be called␊
␉␉␉execute_hook("ExecKernel", binary, NULL, NULL, NULL);␊
␉␉␉getBoolForKey(kKPatcherKey, &patchKernel, &bootInfo->bootConfig);␊
␊
␉␉␉if (patchKernel == true)␊
␉␉␉{␊
␉␉␉␉execute_hook("ExecKernel", binary, NULL, NULL, NULL);␊
␉␉␉}␊
ret = ExecKernel(binary);␊
}␊
}␊
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#define kTestConfigKey␉␉"config"␉␉␉// stringTable.c␊
#define kCanOverrideKey␉␉"CanOverride"␉␉// stringTable.c␊
#define kAutoResolutionKey␉"AutoResolution"␉// boot.c␊
#define kKPatcherKey␉␉"PatchKernel"␉␉// boot.c␊
␊
/*␊
* Flags to the booter and/or kernel - these end with "Flag".␊
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{␊
␊
␉struct load_command *loadCommand;␊
␉struct symtab_command *symtableData;␊
␉struct symtab_command *symtableData = 0; //Azi:warning␊
␉//␉struct nlist *symbolEntry;␊
␉␊
␉char* symbolString;␊
␉␉}␊
␉}␊
␉␊
␉handle_symtable((UInt32)kernelData, symtableData, &symbol_handler, determineKernelArchitecture(kernelData) == KERNEL_64);␊
␉return handle_symtable((UInt32)kernelData, symtableData, &symbol_handler,␊
␉␉␉␉␉␉␉determineKernelArchitecture(kernelData) == KERNEL_64);␊
}␊
␊
long long symbol_handler(char* symbolName, long long addr, char is64)␊
branches/azimutz/Chazi/i386/modules/HelloWorld/HelloWorld.c
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*/␊
␊
#include "libsaio.h"␊
#include "modules.h" //Azi:warning␊
␊
␊
void helloWorld(void* binary, void* arg2, void* arg3, void* arg4)␊
{␊
␉printf("Hello world from ExecKernel hook. Binary located at 0x%X\n", binary);␊
␉getc();␊
␉//getc();␊
␉␊
}␊
␊

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Revision: 486