| * Portions Copyright (c) 1999-2003 Apple Computer, Inc. All Rights␊ |
| * Reserved. This file contains Original Code and/or Modifications of␊ |
| * Original Code as defined in and that are subject to the Apple Public␊ |
| * Source License Version 2.0 (the "License"). You may not use this file␊ |
| * Source License Version 2.0 (the "License").␉You may not use this file␊ |
| * except in compliance with the License. Please obtain a copy of the␊ |
| * License at http://www.apple.com/publicsource and read it before using␊ |
| * this file.␊ |
|
| * ␊ |
| * @APPLE_LICENSE_HEADER_END@␊ |
| */␊ |
| ␊ |
| /* ␊ |
| * Mach Operating System␊ |
| * Copyright (c) 1990 Carnegie-Mellon University␊ |
| * Copyright (c) 1989 Carnegie-Mellon University␊ |
| * All rights reserved. The CMU software License Agreement specifies␊ |
| * All rights reserved.␉ The CMU software License Agreement specifies␊ |
| * the terms and conditions for use and redistribution.␊ |
| */␊ |
| ␊ |
| /*␊ |
| * INTEL CORPORATION PROPRIETARY INFORMATION␊ |
| *␉␉␉INTEL CORPORATION PROPRIETARY INFORMATION␊ |
| *␊ |
| * This software is supplied under the terms of a license agreement or ␊ |
| * nondisclosure agreement with Intel Corporation and may not be copied ␊ |
| * nor disclosed except in accordance with the terms of that agreement.␊ |
| *␉This software is supplied under the terms of a license␉agreement or ␊ |
| *␉nondisclosure agreement with Intel Corporation and may not be copied ␊ |
| *␉nor disclosed except in accordance with the terms of that agreement.␊ |
| *␊ |
| * Copyright 1988, 1989 by Intel Corporation␊ |
| *␉Copyright 1988, 1989 by Intel Corporation␊ |
| */␊ |
| ␊ |
| /*␊ |
|
| * Reworked again by Curtis Galloway (galloway@NeXT.com)␊ |
| */␊ |
| ␊ |
| ␊ |
| #include "boot.h"␊ |
| #include "bootstruct.h"␊ |
| #include "fake_efi.h"␊ |
|
| #include "platform.h"␊ |
| #include "modules.h"␊ |
| ␊ |
| long gBootMode; /* defaults to 0 == kBootModeNormal */␊ |
| bool gOverrideKernel;␊ |
| static char gBootKernelCacheFile[512];␊ |
| static char gCacheNameAdler[64 + 256];␊ |
| char *gPlatformName = gCacheNameAdler;␊ |
| char gRootDevice[512];␊ |
| char gMKextName[512];␊ |
| char gMacOSVersion[8];␊ |
| bool gEnableCDROMRescan;␊ |
| bool gScanSingleDrive;␊ |
| ␊ |
| int bvCount = 0;␊ |
| //int␉␉menucount = 0;␊ |
| int gDeviceCount = 0; ␊ |
| ␊ |
| BVRef bvr;␊ |
| BVRef menuBVR;␊ |
| BVRef bvChain;␊ |
| bool useGUI;␊ |
| ␊ |
| //static void selectBiosDevice(void);␊ |
| static unsigned long Adler32(unsigned char *buffer, long length);␊ |
| static bool checkOSVersion(const char * version);␊ |
| static bool getOSVersion();␊ |
| ␊ |
| static bool gUnloadPXEOnExit = false;␊ |
| ␊ |
| /*␊ |
| * How long to wait (in seconds) to load the␊ |
| * kernel after displaying the "boot:" prompt.␊ |
| */␊ |
| #define kBootErrorTimeout 5␊ |
| ␊ |
| bool␉␉gOverrideKernel, gEnableCDROMRescan, gScanSingleDrive, useGUI;␊ |
| static bool␉gUnloadPXEOnExit = false;␊ |
| ␊ |
| static char␉gCacheNameAdler[64 + 256];␊ |
| char␉␉*gPlatformName = gCacheNameAdler;␊ |
| ␊ |
| char␉␉gRootDevice[512];␊ |
| char␉␉gMKextName[512];␊ |
| char␉␉gMacOSVersion[8];␊ |
| static char␉gBootKernelCacheFile[512];␊ |
| int␉␉␉bvCount = 0, gDeviceCount = 0;␊ |
| //int␉␉menucount = 0;␊ |
| long␉␉gBootMode; /* defaults to 0 == kBootModeNormal */␊ |
| BVRef␉␉bvr, menuBVR, bvChain;␊ |
| ␊ |
| static bool␉␉␉␉checkOSVersion(const char * version);␊ |
| static bool␉␉␉␉getOSVersion();␊ |
| static unsigned long␉Adler32(unsigned char *buffer, long length);␊ |
| //static void␉␉␉selectBiosDevice(void);␊ |
| ␊ |
| ␊ |
| //==========================================================================␊ |
| // Zero the BSS.␊ |
| ␊ |
|
| ␊ |
| static void malloc_error(char *addr, size_t size, const char *file, int line)␊ |
| {␊ |
| ␉stop("\nMemory allocation error! Addr=0x%x, Size=0x%x, File=%s, Line=%d\n", (unsigned)addr, (unsigned)size, file, line);␊ |
| ␉stop("\nMemory allocation error! Addr: 0x%x, Size: 0x%x, File: %s, Line: %d\n",␊ |
| ␉␉␉␉␉␉␉␉␉ (unsigned)addr, (unsigned)size, file, line);␊ |
| }␊ |
| ␊ |
| //==========================================================================␊ |
| //Initializes the runtime. Right now this means zeroing the BSS and initializing malloc.␊ |
| //Initializes the runtime. Right now this means zeroing the BSS and initializing malloc.␊ |
| //␊ |
| void initialize_runtime(void)␊ |
| {␊ |
|
| ␊ |
| static int ExecKernel(void *binary)␊ |
| {␊ |
| ␉entry_t␉␉␉␉␉ kernelEntry;␊ |
| ␉int␉␉␉␉␉␉ ret;␊ |
| ␉int␉␉␉ret;␊ |
| ␉entry_t␉␉kernelEntry;␊ |
| ␉␊ |
| ␉bootArgs->kaddr = bootArgs->ksize = 0;␊ |
| ␉execute_hook("ExecKernel", (void*)binary, NULL, NULL, NULL);␊ |
|
| ␉// Notify modules that the kernel has been decoded␊ |
| ␉execute_hook("DecodedKernel", (void*)binary, NULL, NULL, NULL);␊ |
| ␉␊ |
| setupFakeEfi();␊ |
| ␊ |
| ␉setupFakeEfi();␊ |
| ␉␊ |
| ␉// Load boot drivers from the specifed root path.␊ |
| //if (!gHaveKernelCache)␊ |
| LoadDrivers("/");␊ |
| ␉//if (!gHaveKernelCache)␊ |
| ␉LoadDrivers("/");␊ |
| ␉␊ |
| execute_hook("DriversLoaded", (void*)binary, NULL, NULL, NULL);␊ |
| ␊ |
| ␉execute_hook("DriversLoaded", (void*)binary, NULL, NULL, NULL);␊ |
| ␉␊ |
| ␉clearActivityIndicator();␊ |
| ␉␊ |
| ␉if (gErrors) {␊ |
|
| ␉␉printf("Pausing %d seconds...\n", kBootErrorTimeout);␊ |
| ␉␉sleep(kBootErrorTimeout);␊ |
| ␉}␊ |
| ␉␉␊ |
| ␉␊ |
| ␉md0Ramdisk();␊ |
| ␉␊ |
| ␉verbose("Starting Darwin %s\n",( archCpuType == CPU_TYPE_I386 ) ? "x86" : "x86_64");␊ |
|
| ␉␊ |
| ␉usb_loop();␊ |
| ␉␊ |
| if (checkOSVersion("10.7"))␊ |
| {␊ |
| execute_hook("Kernel Start", (void*)kernelEntry, (void*)bootArgs, NULL, NULL);␉// Notify modules that the kernel is about to be started␊ |
| }␊ |
| else␊ |
| {␊ |
| execute_hook("Kernel Start", (void*)kernelEntry, (void*)bootArgsPreLion, NULL, NULL);␉// Notify modules that the kernel is about to be started␊ |
| }␊ |
| ␊ |
| ␉// Notify modules that the kernel is about to be started␊ |
| ␉if (checkOSVersion("10.7"))␊ |
| ␉{␊ |
| ␉␉execute_hook("Kernel Start", (void*)kernelEntry, (void*)bootArgs, NULL, NULL);␊ |
| ␉}␊ |
| ␉else␊ |
| ␉{␊ |
| ␉␉execute_hook("Kernel Start", (void*)kernelEntry, (void*)bootArgsPreLion, NULL, NULL);␊ |
| ␉}␊ |
| ␉␊ |
| ␉// If we were in text mode, switch to graphics mode.␊ |
| ␉// This will draw the boot graphics unless we are in␊ |
| ␉// verbose mode.␊ |
| ␉␊ |
| ␉if(gVerboseMode)␊ |
| ␉ setVideoMode( GRAPHICS_MODE, 0 );␊ |
| ␉if (gVerboseMode)␊ |
| ␉␉setVideoMode( GRAPHICS_MODE, 0 );␊ |
| ␉else␊ |
| ␉ drawBootGraphics();␊ |
| ␉␉drawBootGraphics();␊ |
| ␉␊ |
| ␉setupBooterLog();␊ |
| ␉␊ |
| ␉finalizeBootStruct();␊ |
| ␉␊ |
| if (checkOSVersion("10.7")) {␊ |
| ␉// Jump to kernel's entry point. There's no going back now.␊ |
| ␉if (checkOSVersion("10.7")) {␊ |
| ␉␉␊ |
| ␉␉// Masking out so that Lion doesn't doublefault␊ |
| ␉␉// Jump to kernel's entry point. There's no going back now.␊ |
| ␊ |
| ␉␉startprog( kernelEntry, bootArgs );␊ |
| ␉}␊ |
| ␉else {␊ |
| ␉␉// Jump to kernel's entry point. There's no going back now.␊ |
| ␉␉␊ |
| ␉␉startprog( kernelEntry, bootArgsPreLion );␊ |
| ␉}␊ |
| ␊ |
|
| // from a block device, or by the network booter.␊ |
| //␊ |
| // arguments:␊ |
| // biosdev - Value passed from boot1/NBP to specify the device␊ |
| // that the booter was loaded from.␊ |
| //␉ biosdev - Value passed from boot1/NBP to specify the device␊ |
| //␉␉␉ that the booter was loaded from.␊ |
| //␊ |
| // If biosdev is kBIOSDevNetwork, then this function will return if␊ |
| // booting was unsuccessful. This allows the PXE firmware to try the␊ |
| // next boot device on its list.␊ |
| void common_boot(int biosdev)␊ |
| {␊ |
| int status;␊ |
| char *bootFile;␊ |
| unsigned long adler32;␊ |
| bool quiet;␊ |
| bool firstRun = true;␊ |
| bool instantMenu;␊ |
| bool rescanPrompt;␊ |
| unsigned int allowBVFlags = kBVFlagSystemVolume | kBVFlagForeignBoot;␊ |
| unsigned int denyBVFlags = kBVFlagEFISystem;␊ |
| ␊ |
| // Set reminder to unload the PXE base code. Neglect to unload␊ |
| // the base code will result in a hang or kernel panic.␊ |
| gUnloadPXEOnExit = true;␊ |
| ␊ |
| // Record the device that the booter was loaded from.␊ |
| gBIOSDev = biosdev & kBIOSDevMask;␊ |
| ␊ |
| // Initialize boot info structure.␊ |
| initKernBootStruct();␊ |
| ␊ |
| ␉bool␉ ␉␉quiet;␊ |
| ␉bool␉ ␉␉firstRun = true;␊ |
| ␉bool␉ ␉␉instantMenu;␊ |
| ␉bool␉ ␉␉rescanPrompt;␊ |
| ␉char␉ ␉␉*bootFile;␊ |
| ␉int␉␉␉␉status;␊ |
| ␉unsigned int␉allowBVFlags = kBVFlagSystemVolume | kBVFlagForeignBoot;␊ |
| ␉unsigned int␉denyBVFlags = kBVFlagEFISystem;␊ |
| ␉unsigned long␉adler32;␊ |
| ␉␊ |
| ␉// Set reminder to unload the PXE base code. Neglect to unload␊ |
| ␉// the base code will result in a hang or kernel panic.␊ |
| ␉gUnloadPXEOnExit = true;␊ |
| ␉␊ |
| ␉// Record the device that the booter was loaded from.␊ |
| ␉gBIOSDev = biosdev & kBIOSDevMask;␊ |
| ␉␊ |
| ␉// Initialize boot info structure.␊ |
| ␉initKernBootStruct();␊ |
| ␉␊ |
| ␉initBooterLog();␊ |
| ␊ |
| // Setup VGA text mode.␊ |
| // Not sure if it is safe to call setVideoMode() before the␊ |
| // config table has been loaded. Call video_mode() instead.␊ |
| ␉␊ |
| ␉// Setup VGA text mode.␊ |
| ␉// Not sure if it is safe to call setVideoMode() before the␊ |
| ␉// config table has been loaded. Call video_mode() instead.␊ |
| #if DEBUG␊ |
| printf("before video_mode\n");␊ |
| ␉printf("before video_mode\n");␊ |
| #endif␊ |
| video_mode( 2 ); // 80x25 mono text mode.␊ |
| ␉video_mode( 2 ); // 80x25 mono text mode.␊ |
| #if DEBUG␊ |
| printf("after video_mode\n");␊ |
| ␉printf("after video_mode\n");␊ |
| #endif␊ |
| ␊ |
| // Scan and record the system's hardware information.␊ |
| scan_platform();␊ |
| ␊ |
| // First get info for boot volume.␊ |
| scanBootVolumes(gBIOSDev, 0);␊ |
| bvChain = getBVChainForBIOSDev(gBIOSDev);␊ |
| setBootGlobals(bvChain);␊ |
| ␊ |
| // Load boot.plist config file␊ |
| status = loadChameleonConfig(&bootInfo->chameleonConfig);␊ |
| ␊ |
| if (getBoolForKey(kQuietBootKey, &quiet, &bootInfo->chameleonConfig) && quiet) {␊ |
| gBootMode |= kBootModeQuiet;␊ |
| }␊ |
| ␊ |
| // Override firstRun to get to the boot menu instantly by setting "Instant Menu"=y in system config␊ |
| if (getBoolForKey(kInsantMenuKey, &instantMenu, &bootInfo->chameleonConfig) && instantMenu) {␊ |
| firstRun = false;␊ |
| }␊ |
| ␊ |
| // Loading preboot ramdisk if exists.␊ |
| loadPrebootRAMDisk();␊ |
| ␊ |
| // Disable rescan option by default␊ |
| gEnableCDROMRescan = false;␊ |
| ␊ |
| // Enable it with Rescan=y in system config␊ |
| if (getBoolForKey(kRescanKey, &gEnableCDROMRescan, &bootInfo->chameleonConfig) && gEnableCDROMRescan) {␊ |
| gEnableCDROMRescan = true;␊ |
| }␊ |
| ␊ |
| // Ask the user for Rescan option by setting "Rescan Prompt"=y in system config.␊ |
| rescanPrompt = false;␊ |
| if (getBoolForKey(kRescanPromptKey, &rescanPrompt , &bootInfo->chameleonConfig) && rescanPrompt && biosDevIsCDROM(gBIOSDev)) {␊ |
| gEnableCDROMRescan = promptForRescanOption();␊ |
| }␊ |
| ␊ |
| // Enable touching a single BIOS device only if "Scan Single Drive"=y is set in system config.␊ |
| if (getBoolForKey(kScanSingleDriveKey, &gScanSingleDrive, &bootInfo->chameleonConfig) && gScanSingleDrive) {␊ |
| gScanSingleDrive = true;␊ |
| }␊ |
| ␊ |
| // Create a list of partitions on device(s).␊ |
| if (gScanSingleDrive) {␊ |
| scanBootVolumes(gBIOSDev, &bvCount);␊ |
| } else {␊ |
| scanDisks(gBIOSDev, &bvCount);␊ |
| }␊ |
| ␊ |
| // Create a separated bvr chain using the specified filters.␊ |
| bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊ |
| ␊ |
| gBootVolume = selectBootVolume(bvChain);␊ |
| ␊ |
| ␉␊ |
| ␉// Scan and record the system's hardware information.␊ |
| ␉scan_platform();␊ |
| ␉␊ |
| ␉// First get info for boot volume.␊ |
| ␉scanBootVolumes(gBIOSDev, 0);␊ |
| ␉bvChain = getBVChainForBIOSDev(gBIOSDev);␊ |
| ␉setBootGlobals(bvChain);␊ |
| ␉␊ |
| ␉// Load boot.plist config file␊ |
| ␉status = loadChameleonConfig(&bootInfo->chameleonConfig);␊ |
| ␉␊ |
| ␉if (getBoolForKey(kQuietBootKey, &quiet, &bootInfo->chameleonConfig) && quiet) {␊ |
| ␉␉gBootMode |= kBootModeQuiet;␊ |
| ␉}␊ |
| ␉␊ |
| ␉// Override firstRun to get to the boot menu instantly by setting "Instant Menu"=y in system config␊ |
| ␉if (getBoolForKey(kInstantMenuKey, &instantMenu, &bootInfo->chameleonConfig) && instantMenu) {␊ |
| ␉␉firstRun = false;␊ |
| ␉}␊ |
| ␉␊ |
| ␉// Loading preboot ramdisk if exists.␊ |
| ␉loadPrebootRAMDisk();␊ |
| ␉␊ |
| ␉// Disable rescan option by default␊ |
| ␉gEnableCDROMRescan = false;␊ |
| ␉␊ |
| ␉// Enable it with Rescan=y in system config␊ |
| ␉if (getBoolForKey(kRescanKey, &gEnableCDROMRescan, &bootInfo->chameleonConfig)␊ |
| ␉␉&& gEnableCDROMRescan) {␊ |
| ␉␉gEnableCDROMRescan = true;␊ |
| ␉}␊ |
| ␉␊ |
| ␉// Ask the user for Rescan option by setting "Rescan Prompt"=y in system config.␊ |
| ␉rescanPrompt = false;␊ |
| ␉if (getBoolForKey(kRescanPromptKey, &rescanPrompt , &bootInfo->chameleonConfig)␊ |
| ␉␉&& rescanPrompt && biosDevIsCDROM(gBIOSDev))␊ |
| ␉{␊ |
| ␉␉gEnableCDROMRescan = promptForRescanOption();␊ |
| ␉}␊ |
| ␉␊ |
| ␉// Enable touching a single BIOS device only if "Scan Single Drive"=y is set in system config.␊ |
| ␉if (getBoolForKey(kScanSingleDriveKey, &gScanSingleDrive, &bootInfo->chameleonConfig)␊ |
| ␉␉&& gScanSingleDrive) {␊ |
| ␉␉gScanSingleDrive = true;␊ |
| ␉}␊ |
| ␉␊ |
| ␉// Create a list of partitions on device(s).␊ |
| ␉if (gScanSingleDrive) {␊ |
| ␉␉scanBootVolumes(gBIOSDev, &bvCount);␊ |
| ␉} else {␊ |
| ␉␉scanDisks(gBIOSDev, &bvCount);␊ |
| ␉}␊ |
| ␉␊ |
| ␉// Create a separated bvr chain using the specified filters.␊ |
| ␉bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊ |
| ␉␊ |
| ␉gBootVolume = selectBootVolume(bvChain);␊ |
| ␉␊ |
| ␉// Intialize module system ␊ |
| ␉init_module_system();␊ |
| ␊ |
| #if DEBUG␊ |
| printf(" Default: %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBootVolume, gBootVolume->biosdev, gBootVolume->part_no, gBootVolume->flags);␊ |
| printf(" bt(0,0): %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBIOSBootVolume, gBIOSBootVolume->biosdev, gBIOSBootVolume->part_no, gBIOSBootVolume->flags);␊ |
| getchar();␊ |
| ␉printf(" Default: %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n",␊ |
| ␉␉␉ gBootVolume, gBootVolume->biosdev, gBootVolume->part_no, gBootVolume->flags);␊ |
| ␉printf(" bt(0,0): %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n",␊ |
| ␉␉␉ gBIOSBootVolume, gBIOSBootVolume->biosdev, gBIOSBootVolume->part_no, gBIOSBootVolume->flags);␊ |
| ␉getchar();␊ |
| #endif␊ |
| ␊ |
| ␉useGUI = true;␊ |
|
| ␉␉// initGUI() returned with an error, disabling GUI.␊ |
| ␉␉useGUI = false;␊ |
| ␉}␊ |
| ␊ |
| setBootGlobals(bvChain);␊ |
| ␊ |
| // Parse args, load and start kernel.␊ |
| while (1) {␊ |
| const char *val;␊ |
| int len;␊ |
| int trycache;␊ |
| long flags, cachetime, kerneltime, exttime, sleeptime, time;␊ |
| int ret = -1;␊ |
| void *binary = (void *)kLoadAddr;␊ |
| bool tryresume;␊ |
| bool tryresumedefault;␊ |
| bool forceresume;␊ |
| ␉␉bool usecache = false;//true;␊ |
| ␊ |
| // additional variable for testing alternate kernel image locations on boot helper partitions.␊ |
| char bootFileSpec[512];␊ |
| ␉␊ |
| ␉setBootGlobals(bvChain);␊ |
| ␉␊ |
| ␉// Parse args, load and start kernel.␊ |
| ␉while (1)␊ |
| ␉{␊ |
| ␉␉bool␉␉tryresume, tryresumedefault, forceresume;␊ |
| ␉␉bool␉␉usecache = false;//true;␊ |
| ␉␉const char␉*val;␊ |
| ␉␉int␉␉␉len, trycache, ret = -1;␊ |
| ␉␉long␉␉flags, cachetime, kerneltime, exttime, sleeptime, time;␊ |
| ␉␉void␉␉*binary = (void *)kLoadAddr;␊ |
| ␉␉␊ |
| // Initialize globals.␊ |
| ␊ |
| sysConfigValid = false;␊ |
| gErrors = false;␊ |
| ␊ |
| status = getBootOptions(firstRun);␊ |
| firstRun = false;␊ |
| if (status == -1) continue;␊ |
| ␉␉// additional variable for testing alternate kernel image locations on boot helper partitions.␊ |
| ␉␉char␉␉bootFileSpec[512];␊ |
| ␉␉␊ |
| status = processBootOptions();␊ |
| // Status==1 means to chainboot␊ |
| if ( status == 1 ) break;␊ |
| // Status==-1 means that the config file couldn't be loaded or that gBootVolume is NULL␊ |
| if ( status == -1 )␊ |
| {␊ |
| // gBootVolume == NULL usually means the user hit escape.␊ |
| if(gBootVolume == NULL)␊ |
| {␊ |
| freeFilteredBVChain(bvChain);␊ |
| ␊ |
| if (gEnableCDROMRescan)␊ |
| rescanBIOSDevice(gBIOSDev);␊ |
| ␊ |
| bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊ |
| setBootGlobals(bvChain);␊ |
| setupDeviceList(&bootInfo->themeConfig);␊ |
| }␊ |
| continue;␊ |
| }␊ |
| ␉␉// Initialize globals.␊ |
| ␉␉sysConfigValid = false;␊ |
| ␉␉gErrors␉␉ = false;␊ |
| ␉␉␊ |
| // Other status (e.g. 0) means that we should proceed with boot.␊ |
| ␉␉status = getBootOptions(firstRun);␊ |
| ␉␉firstRun = false;␊ |
| ␉␉if (status == -1) continue;␊ |
| ␉␉ ␊ |
| ␉␉status = processBootOptions();␊ |
| ␉␉// Status == 1 means to chainboot␊ |
| ␉␉if ( status ==␉1 ) break;␊ |
| ␉␉// Status == -1 means that the config file couldn't be loaded or that gBootVolume is NULL␊ |
| ␉␉if ( status == -1 )␊ |
| ␉␉{␊ |
| ␉␉␉// gBootVolume == NULL usually means the user hit escape.␊ |
| ␉␉␉if (gBootVolume == NULL)␊ |
| ␉␉␉{␊ |
| ␉␉␉␉freeFilteredBVChain(bvChain);␊ |
| ␉␉␉␉␊ |
| ␉␉␉␉if (gEnableCDROMRescan)␊ |
| ␉␉␉␉␉rescanBIOSDevice(gBIOSDev);␊ |
| ␉␉␉␉␊ |
| ␉␉␉␉bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊ |
| ␉␉␉␉setBootGlobals(bvChain);␊ |
| ␉␉␉␉setupDeviceList(&bootInfo->themeConfig);␊ |
| ␉␉␉}␊ |
| ␉␉␉continue;␊ |
| ␉␉}␊ |
| ␉␉␊ |
| ␉␉// Other status (e.g. 0) means that we should proceed with boot.␊ |
| ␉␉␊ |
| ␉␉// Turn off any GUI elements␊ |
| ␉␉if( bootArgs->Video.v_display == GRAPHICS_MODE )␊ |
| ␉␉if ( bootArgs->Video.v_display == GRAPHICS_MODE )␊ |
| ␉␉{␊ |
| ␉␉␉gui.devicelist.draw = false;␊ |
| ␉␉␉gui.bootprompt.draw = false;␊ |
|
| ␉␉␉␉archCpuType = CPU_TYPE_I386;␊ |
| ␉␉␉}␊ |
| ␉␉}␊ |
| ␊ |
| ␉if (getValueForKey(kKernelArchKey, &val, &len, &bootInfo->chameleonConfig)) {␊ |
| ␉␉␊ |
| ␉␉if (getValueForKey(kKernelArchKey, &val, &len, &bootInfo->chameleonConfig)) {␊ |
| ␉␉␉if (strncmp(val, "i386", 4) == 0) {␊ |
| ␉␉␉␉archCpuType = CPU_TYPE_I386;␊ |
| ␉␉␉}␊ |
|
| ␉␉␉const char *tmp;␊ |
| ␉␉␉BVRef bvr;␊ |
| ␉␉␉if (!getValueForKey(kWakeImage, &val, &len, &bootInfo->chameleonConfig))␊ |
| ␉␉␉␉val="/private/var/vm/sleepimage";␊ |
| ␉␉␉␉val = "/private/var/vm/sleepimage";␊ |
| ␉␉␉␊ |
| ␉␉␉// Do this first to be sure that root volume is mounted␊ |
| ␉␉␉ret = GetFileInfo(0, val, &flags, &sleeptime);␊ |
|
| ␉␉␉␉break;␊ |
| ␉␉␉␊ |
| ␉␉␉if (!forceresume && ((sleeptime+3)<bvr->modTime)) {␊ |
| #if DEBUG ␊ |
| ␉␉␉␉printf ("Hibernate image is too old by %d seconds. Use ForceWake=y to override\n",bvr->modTime-sleeptime);␊ |
| #endif ␊ |
| #if DEBUG␉␊ |
| ␉␉␉␉printf ("Hibernate image is too old by %d seconds. Use ForceWake=y to override\n",␊ |
| ␉␉␉␉␉␉bvr->modTime-sleeptime);␊ |
| #endif␉␉␉␉ ␊ |
| ␉␉␉␉break;␊ |
| ␉␉␉}␊ |
| ␊ |
| ␉␉␉HibernateBoot((char *)val);␊ |
| ␉␉␉break;␊ |
| ␉␉}␊ |
| ␊ |
| ␊ |
| ␉␉getBoolForKey(kUseKernelCache, &usecache, &bootInfo->chameleonConfig);␊ |
| ␉␉if(usecache) {␊ |
| ␉␉if (usecache) {␊ |
| ␉␉␉if (getValueForKey(kKernelCacheKey, &val, &len, &bootInfo->bootConfig)) {␊ |
| if(val[0] == '\\')␊ |
| {␊ |
| len--;␊ |
| val++;␊ |
| }␊ |
| strlcpy(gBootKernelCacheFile, val, len+1);␊ |
| ␉␉␉␉if (val[0] == '\\')␊ |
| ␉␉␉␉{␊ |
| ␉␉␉␉␉len--;␊ |
| ␉␉␉␉␉val++;␊ |
| ␉␉␉␉}␊ |
| ␉␉␉␉strlcpy(gBootKernelCacheFile, val, len + 1);␊ |
| ␉␉␉}␊ |
| ␉␉␉else {␊ |
| ␉␉␉␉//Lion␊ |
|
| ␉␉␉␉}␊ |
| ␉␉␉␉// Snow Leopard␊ |
| ␉␉␉␉else if (checkOSVersion("10.6")) {␊ |
| ␉␉␉␉␉sprintf(gBootKernelCacheFile, "kernelcache_%s", (archCpuType == CPU_TYPE_I386) ? "i386" : "x86_64");␊ |
| ␉␉␉␉␉sprintf(gBootKernelCacheFile, "kernelcache_%s", (archCpuType == CPU_TYPE_I386)␊ |
| ␉␉␉␉␉␉␉? "i386" : "x86_64");␊ |
| ␉␉␉␉␉int lnam = sizeof(gBootKernelCacheFile) + 9; //with adler32␊ |
| ␉␉␉␉␉//Slice - TODO ???␊ |
| ␉␉␉␉␉// e.g. kernelcache_i386.E102928C.qSs0 = "unsaved" cache file.␊ |
| ␉␉␉␉␉//␊ |
| ␉␉␉␉␉// See kext_tools-180.2.1/kextcache_main.c:␊ |
| ␉␉␉␉␉// "Source directory has changed since starting; "␊ |
| ␉ // "not saving cache file %s."␊ |
| ␉␉␉␉␉// or␊ |
| ␉␉␉␉␉// "Source kernel has changed since starting; "␊ |
| ␉ // "not saving cache file %s."␊ |
| ␉␉␉␉␉␊ |
| ␉␉␉␉␉char* name;␊ |
| ␉␉␉␉␉long prev_time = 0;␊ |
|
| ␉␉␉␉␉␊ |
| ␉␉␉␉␉while(readdir(cacheDir, (const char**)&name, &flags, &time) >= 0)␊ |
| ␉␉␉␉␉{␊ |
| ␉␉␉␉␉␉if(((flags & kFileTypeMask) != kFileTypeDirectory) && time > prev_time && strstr(name, gBootKernelCacheFile) && (name[lnam] != '.'))␊ |
| ␉␉␉␉␉␉if (((flags & kFileTypeMask) != kFileTypeDirectory) && time > prev_time␊ |
| ␉␉␉␉␉␉␉&& strstr(name, gBootKernelCacheFile) && (name[lnam] != '.'))␊ |
| ␉␉␉␉␉␉{␊ |
| ␉␉␉␉␉␉␉sprintf(gBootKernelCacheFile, "%s%s", kDefaultCachePathSnow, name);␊ |
| ␉␉␉␉␉␉␉prev_time = time;␊ |
|
| ␉␉␉␉}␊ |
| ␉␉␉}␊ |
| ␉␉}␊ |
| ␊ |
| // Check for cache file.␊ |
| trycache = (usecache && ␊ |
| ␉␉␊ |
| ␉␉// Check for cache file.␊ |
| ␉␉trycache = (usecache && ␊ |
| ␉␉␉␉␉((gBootMode & kBootModeSafe) == 0) &&␊ |
| !gOverrideKernel &&␊ |
| (gBootFileType == kBlockDeviceType) &&␊ |
| (gMKextName[0] == '\0') &&␊ |
| (gBootKernelCacheFile[0] != '\0'));␊ |
| ␊ |
| ␉␉␉␉␉!gOverrideKernel &&␊ |
| ␉␉␉␉␉(gBootFileType == kBlockDeviceType) &&␊ |
| ␉␉␉␉␉(gMKextName[0] == '\0') &&␊ |
| ␉␉␉␉␉(gBootKernelCacheFile[0] != '\0'));␊ |
| ␉␉␊ |
| ␉␉verbose("Loading Darwin %s\n", gMacOSVersion);␊ |
| ␉␉␊ |
| if (trycache) do {␊ |
| ret = GetFileInfo(NULL, bootInfo->bootFile, &flags, &kerneltime);␊ |
| if(ret != 0) kerneltime = 0;␊ |
| else if ((flags & kFileTypeMask) != kFileTypeFlat) {␊ |
| trycache = 0;␊ |
| break;␊ |
| }␊ |
| ␉␉if (trycache) do {␊ |
| ␉␉␉ret = GetFileInfo(NULL, bootInfo->bootFile, &flags, &kerneltime);␊ |
| ␉␉␉if (ret != 0) kerneltime = 0;␊ |
| ␉␉␉else if ((flags & kFileTypeMask) != kFileTypeFlat) {␊ |
| ␉␉␉␉trycache = 0;␊ |
| ␉␉␉␉break;␊ |
| ␉␉␉}␊ |
| ␉␉␉␊ |
| ␉␉␉ret = GetFileInfo(NULL, gBootKernelCacheFile, &flags, &cachetime);␊ |
| ␉␉␉if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)␊ |
| ␉␉␉␉|| (cachetime < kerneltime)) {␊ |
| ␉␉␉␉trycache = 0;␊ |
| ␉␉␉␉break;␊ |
| ␉␉␉}␊ |
| ␉␉␉␊ |
| ␉␉␉ret = GetFileInfo("/System/Library/", "Extensions", &flags, &exttime);␊ |
| ␉␉␉if ((ret == 0) && ((flags & kFileTypeMask) == kFileTypeDirectory)␊ |
| ␉␉␉␉&& (cachetime < exttime)) {␊ |
| ␉␉␉␉trycache = 0;␊ |
| ␉␉␉␉break;␊ |
| ␉␉␉}␊ |
| ␉␉␉␊ |
| ␉␉␉if (ret == 0 && kerneltime > exttime) {␊ |
| ␉␉␉␉exttime = kerneltime;␊ |
| ␉␉␉}␊ |
| ␉␉␉␊ |
| ␉␉␉if (ret == 0 && cachetime != (exttime + 1)) {␊ |
| ␉␉␉␉trycache = 0;␊ |
| ␉␉␉␉break;␊ |
| ␉␉␉}␊ |
| ␉␉} while (0);␊ |
| ␊ |
| ret = GetFileInfo(NULL, gBootKernelCacheFile, &flags, &cachetime);␊ |
| if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)␊ |
| || (cachetime < kerneltime)) {␊ |
| trycache = 0;␊ |
| break;␊ |
| }␊ |
| ret = GetFileInfo("/System/Library/", "Extensions", &flags, &exttime);␊ |
| if ((ret == 0) && ((flags & kFileTypeMask) == kFileTypeDirectory)␊ |
| && (cachetime < exttime)) {␊ |
| trycache = 0;␊ |
| break;␊ |
| }␊ |
| if (ret == 0 && kerneltime > exttime) {␊ |
| exttime = kerneltime;␊ |
| }␊ |
| if (ret == 0 && cachetime != (exttime + 1)) {␊ |
| trycache = 0;␊ |
| break;␊ |
| }␊ |
| } while (0);␊ |
| ␊ |
| do {␊ |
| if (trycache) {␊ |
| bootFile = gBootKernelCacheFile;␊ |
| ␊ |
| ␉␉do {␊ |
| ␉␉␉if (trycache) {␊ |
| ␉␉␉␉bootFile = gBootKernelCacheFile;␊ |
| ␉␉␉␉␊ |
| ␉␉␉␉verbose("Loading kernel cache %s\n", bootFile);␊ |
| ␊ |
| if (checkOSVersion("10.7")) {␊ |
| ret = LoadThinFatFile(bootFile, &binary);␊ |
| ␉␉␉␉␊ |
| ␉␉␉␉if (checkOSVersion("10.7")) {␊ |
| ␉␉␉␉␉ret = LoadThinFatFile(bootFile, &binary);␊ |
| ␉␉␉␉}␊ |
| ␉␉␉␉else {␊ |
| ␉ret = LoadFile(bootFile);␊ |
| ␉␉␉␉␉ret = LoadFile(bootFile);␊ |
| ␉␉␉␉␉binary = (void *)kLoadAddr;␊ |
| ␉␉␉␉}␊ |
| ␉␉␉␉␊ |
| if (ret >= 0)␊ |
| break;␊ |
| ␉␉␉␉if (ret >= 0)␊ |
| ␉␉␉␉␉break;␊ |
| ␉␉␉␉␊ |
| ␉␉␉␉verbose("Kernel cache did not load %s\n ", bootFile);␊ |
| }␊ |
| ␊ |
| if (checkOSVersion("10.7")) {␊ |
| bootFile = gBootKernelCacheFile;␊ |
| }␊ |
| else {␊ |
| sprintf(bootFile, "\%s", bootInfo->bootFile);␊ |
| }␊ |
| ␊ |
| // Try to load kernel image from alternate locations on boot helper partitions.␊ |
| sprintf(bootFileSpec, "com.apple.boot.P%s", bootFile);␊ |
| ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊ |
| if (ret == -1)␊ |
| {␊ |
| sprintf(bootFileSpec, "com.apple.boot.R%s", bootFile);␊ |
| ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊ |
| if (ret == -1)␊ |
| {␊ |
| sprintf(bootFileSpec, "com.apple.boot.S%s", bootFile);␊ |
| ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊ |
| if (ret == -1)␊ |
| {␊ |
| // No alternate location found, using the original kernel image path.␊ |
| strcpy(bootFileSpec, bootInfo->bootFile);␊ |
| }␊ |
| }␊ |
| }␊ |
| ␊ |
| if (checkOSVersion("10.7"))␊ |
| {␊ |
| //Lion, dont load kernel if haz cache␊ |
| if (!trycache) ␊ |
| {␊ |
| ␉␉verbose("Loading kernel %s\n", bootFileSpec);␊ |
| ␉␉ret = LoadThinFatFile(bootFileSpec, &binary);␊ |
| ␉␉if (ret <= 0 && archCpuType == CPU_TYPE_X86_64) ␊ |
| {␊ |
| ␉␉␉archCpuType = CPU_TYPE_I386;␊ |
| ␉␉␉ret = LoadThinFatFile(bootFileSpec, &binary);␉␉␉␉␊ |
| ␉␉}␊ |
| ␉␉ } ␊ |
| ␉␉␉}␊ |
| ␉␉␉␊ |
| ␉␉␉if (checkOSVersion("10.7")) {␊ |
| ␉␉␉␉bootFile = gBootKernelCacheFile;␊ |
| ␉␉␉}␊ |
| ␉␉␉else {␊ |
| ␉␉␉␉sprintf(bootFile, "\%s", bootInfo->bootFile);␊ |
| ␉␉␉}␊ |
| ␉␉␉␊ |
| ␉␉␉// Try to load kernel image from alternate locations on boot helper partitions.␊ |
| ␉␉␉sprintf(bootFileSpec, "com.apple.boot.P%s", bootFile);␊ |
| ␉␉␉ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊ |
| ␉␉␉if (ret == -1)␊ |
| ␉␉␉{␊ |
| ␉␉␉␉sprintf(bootFileSpec, "com.apple.boot.R%s", bootFile);␊ |
| ␉␉␉␉ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊ |
| ␉␉␉␉if (ret == -1)␊ |
| ␉␉␉␉{␊ |
| ␉␉␉␉␉sprintf(bootFileSpec, "com.apple.boot.S%s", bootFile);␊ |
| ␉␉␉␉␉ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊ |
| ␉␉␉␉␉if (ret == -1)␊ |
| ␉␉␉␉␉{␊ |
| ␉␉␉␉␉␉// No alternate location found, using the original kernel image path.␊ |
| ␉␉␉␉␉␉strcpy(bootFileSpec, bootInfo->bootFile);␊ |
| ␉␉␉␉␉}␊ |
| ␉␉␉␉}␊ |
| ␉␉␉}␊ |
| ␉␉␉␊ |
| ␉␉␉if (checkOSVersion("10.7"))␊ |
| ␉␉␉{␊ |
| ␉␉␉␉//Lion, dont load kernel if haz cache␊ |
| ␉␉␉␉if (!trycache) ␊ |
| ␉␉␉␉{␊ |
| ␉␉␉␉␉verbose("Loading kernel %s\n", bootFileSpec);␊ |
| ␉␉␉␉␉ret = LoadThinFatFile(bootFileSpec, &binary);␊ |
| ␉␉␉␉␉if (ret <= 0 && archCpuType == CPU_TYPE_X86_64) ␊ |
| ␉␉␉␉␉{␊ |
| ␉␉␉␉␉␉archCpuType = CPU_TYPE_I386;␊ |
| ␉␉␉␉␉␉ret = LoadThinFatFile(bootFileSpec, &binary);␉␉␉␉␊ |
| ␉␉␉␉␉}␊ |
| ␉␉␉␉} ␊ |
| ␉␉␉␉else ret = 1;␊ |
| } ␊ |
| ␉␉␉} ␊ |
| ␉␉␉else ␊ |
| {␊ |
| //Snow Leopard or older␊ |
| verbose("Loading kernel %s\n", bootFileSpec);␊ |
| ret = LoadThinFatFile(bootFileSpec, &binary);␊ |
| if (ret <= 0 && archCpuType == CPU_TYPE_X86_64) ␊ |
| {␊ |
| archCpuType = CPU_TYPE_I386;␊ |
| ret = LoadThinFatFile(bootFileSpec, &binary);␉␉␉␉␊ |
| }␊ |
| }␊ |
| } while (0);␊ |
| ␊ |
| clearActivityIndicator();␊ |
| ␉␉␉{␊ |
| ␉␉␉␉//Snow Leopard or older␊ |
| ␉␉␉␉verbose("Loading kernel %s\n", bootFileSpec);␊ |
| ␉␉␉␉ret = LoadThinFatFile(bootFileSpec, &binary);␊ |
| ␉␉␉␉if (ret <= 0 && archCpuType == CPU_TYPE_X86_64) ␊ |
| ␉␉␉␉{␊ |
| ␉␉␉␉␉archCpuType = CPU_TYPE_I386;␊ |
| ␉␉␉␉␉ret = LoadThinFatFile(bootFileSpec, &binary);␉␉␉␉␊ |
| ␉␉␉␉}␊ |
| ␉␉␉}␊ |
| ␉␉} while (0);␊ |
| ␉␉␊ |
| ␉␉clearActivityIndicator();␊ |
| ␉␉␊ |
| #if DEBUG␊ |
| printf("Pausing...");␊ |
| sleep(8);␊ |
| ␉␉printf("Pausing...");␊ |
| ␉␉sleep(8);␊ |
| #endif␊ |
| ␊ |
| if (ret <= 0) {␊ |
| ␉␉␊ |
| ␉␉if (ret <= 0) {␊ |
| ␉␉␉printf("Can't find %s\n", bootFile);␊ |
| ␊ |
| ␉␉␉␊ |
| ␉␉␉sleep(1);␊ |
| ␊ |
| if (gBootFileType == kNetworkDeviceType) {␊ |
| // Return control back to PXE. Don't unload PXE base code.␊ |
| gUnloadPXEOnExit = false;␊ |
| break;␊ |
| }␊ |
| } else {␊ |
| /* Won't return if successful. */␊ |
| ret = ExecKernel(binary);␊ |
| }␊ |
| }␊ |
| ␊ |
| // chainboot␊ |
| if (status==1) {␊ |
| ␉␉if (getVideoMode() == GRAPHICS_MODE) {␉// if we are already in graphics-mode,␊ |
| ␉␉␉setVideoMode(VGA_TEXT_MODE, 0);␉// switch back to text mode␊ |
| ␉␉␉␊ |
| ␉␉␉if (gBootFileType == kNetworkDeviceType) {␊ |
| ␉␉␉␉// Return control back to PXE. Don't unload PXE base code.␊ |
| ␉␉␉␉gUnloadPXEOnExit = false;␊ |
| ␉␉␉␉break;␊ |
| ␉␉␉}␊ |
| ␉␉} else {␊ |
| ␉␉␉/* Won't return if successful. */␊ |
| ␉␉␉ret = ExecKernel(binary);␊ |
| ␉␉}␊ |
| }␊ |
| ␉}␊ |
| ␉␊ |
| if ((gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit) {␊ |
| ␉// chainboot␊ |
| ␉if (status == 1) {␊ |
| ␉␉// if we are already in graphics-mode,␊ |
| ␉␉if (getVideoMode() == GRAPHICS_MODE) {␊ |
| ␉␉␉setVideoMode(VGA_TEXT_MODE, 0); // switch back to text mode.␊ |
| ␉␉}␊ |
| ␉}␊ |
| ␉␊ |
| ␉if ((gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit) {␊ |
| ␉␉nbpUnloadBaseCode();␊ |
| }␊ |
| ␉}␊ |
| }␊ |
| ␊ |
| /*!␊ |
| Selects a new BIOS device, taking care to update the global state appropriately.␊ |
| ␉Selects a new BIOS device, taking care to update the global state appropriately.␊ |
| */␊ |
| /*␊ |
| static void selectBiosDevice(void)␊ |
| {␊ |
| struct DiskBVMap *oldMap = diskResetBootVolumes(gBIOSDev);␊ |
| CacheReset();␊ |
| diskFreeMap(oldMap);␊ |
| oldMap = NULL;␊ |
| ␊ |
| int dev = selectAlternateBootDevice(gBIOSDev);␊ |
| ␊ |
| BVRef bvchain = scanBootVolumes(dev, 0);␊ |
| BVRef bootVol = selectBootVolume(bvchain);␊ |
| gBootVolume = bootVol;␊ |
| setRootVolume(bootVol);␊ |
| gBIOSDev = dev;␊ |
| ␉struct DiskBVMap *oldMap = diskResetBootVolumes(gBIOSDev);␊ |
| ␉CacheReset();␊ |
| ␉diskFreeMap(oldMap);␊ |
| ␉oldMap = NULL;␊ |
| ␉␊ |
| ␉int dev = selectAlternateBootDevice(gBIOSDev);␊ |
| ␉␊ |
| ␉BVRef bvchain = scanBootVolumes(dev, 0);␊ |
| ␉BVRef bootVol = selectBootVolume(bvchain);␊ |
| ␉gBootVolume = bootVol;␊ |
| ␉setRootVolume(bootVol);␊ |
| ␉gBIOSDev = dev;␊ |
| }␊ |
| */␊ |
| ␊ |
| bool checkOSVersion(const char * version) ␊ |
| {␊ |
| ␉return ((gMacOSVersion[0] == version[0]) && (gMacOSVersion[1] == version[1]) && (gMacOSVersion[2] == version[2]) && (gMacOSVersion[3] == version[3]));␊ |
| ␉return ((gMacOSVersion[0] == version[0]) && (gMacOSVersion[1] == version[1])␊ |
| ␉␉␉&& (gMacOSVersion[2] == version[2]) && (gMacOSVersion[3] == version[3]));␊ |
| }␊ |
| ␊ |
| bool getOSVersion()␊ |
| {␊ |
| ␉bool valid = false;␊ |
| ␉config_file_t systemVersion;␊ |
| ␉const char *val;␊ |
| ␉int len;␊ |
| ␊ |
| ␉bool␉␉␉valid = false;␊ |
| ␉const char␉␉*val;␊ |
| ␉int␉␉␉␉len;␊ |
| ␉config_file_t␉systemVersion;␊ |
| ␉␊ |
| ␉if (!loadConfigFile("System/Library/CoreServices/SystemVersion.plist", &systemVersion))␊ |
| ␉{␊ |
| ␉␉valid = true;␊ |
|
| ␊ |
| ␉if (valid)␊ |
| ␉{␊ |
| ␉␉if (getValueForKey(kProductVersion, &val, &len, &systemVersion))␊ |
| ␉␉if␉(getValueForKey(kProductVersion, &val, &len, &systemVersion))␊ |
| ␉␉{␊ |
| ␉␉␉// getValueForKey uses const char for val␊ |
| ␉␉␉// so copy it and trim␊ |
|
| #define NMAX 5000␊ |
| // NMAX (was 5521) the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1␊ |
| ␊ |
| #define DO1(buf,i) {s1 += buf[i]; s2 += s1;}␊ |
| #define DO2(buf,i) DO1(buf,i); DO1(buf,i+1);␊ |
| #define DO4(buf,i) DO2(buf,i); DO2(buf,i+2);␊ |
| #define DO8(buf,i) DO4(buf,i); DO4(buf,i+4);␊ |
| #define DO16(buf) DO8(buf,0); DO8(buf,8);␊ |
| #define DO1(buf, i)␉{s1 += buf[i]; s2 += s1;}␊ |
| #define DO2(buf, i)␉DO1(buf, i); DO1(buf, i + 1);␊ |
| #define DO4(buf, i)␉DO2(buf, i); DO2(buf, i + 2);␊ |
| #define DO8(buf, i)␉DO4(buf, i); DO4(buf, i + 4);␊ |
| #define DO16(buf)␉DO8(buf, 0); DO8(buf, 8);␊ |
| ␊ |
| unsigned long Adler32(unsigned char *buf, long len)␊ |
| {␊ |
| unsigned long s1 = 1; // adler & 0xffff;␊ |
| unsigned long s2 = 0; // (adler >> 16) & 0xffff;␊ |
| unsigned long result;␊ |
| int k;␊ |
| ␊ |
| while (len > 0) {␊ |
| k = len < NMAX ? len : NMAX;␊ |
| len -= k;␊ |
| while (k >= 16) {␊ |
| DO16(buf);␊ |
| buf += 16;␊ |
| k -= 16;␊ |
| }␊ |
| if (k != 0) do {␊ |
| s1 += *buf++;␊ |
| s2 += s1;␊ |
| } while (--k);␊ |
| s1 %= BASE;␊ |
| s2 %= BASE;␊ |
| }␊ |
| result = (s2 << 16) | s1;␊ |
| return OSSwapHostToBigInt32(result);␊ |
| ␉unsigned long s1 = 1; // adler & 0xffff;␊ |
| ␉unsigned long s2 = 0; // (adler >> 16) & 0xffff;␊ |
| ␉unsigned long result;␊ |
| ␉int k;␊ |
| ␉␊ |
| ␉while (len > 0) {␊ |
| ␉␉k = len < NMAX ? len : NMAX;␊ |
| ␉␉len -= k;␊ |
| ␉␉while (k >= 16) {␊ |
| ␉␉␉DO16(buf);␊ |
| ␉␉␉buf += 16;␊ |
| ␉␉␉k -= 16;␊ |
| ␉␉}␊ |
| ␉␉if (k != 0) do {␊ |
| ␉␉␉s1 += *buf++;␊ |
| ␉␉␉s2 += s1;␊ |
| ␉␉} while (--k);␊ |
| ␉␉s1 %= BASE;␊ |
| ␉␉s2 %= BASE;␊ |
| ␉}␊ |
| ␉result = (s2 << 16) | s1;␊ |
| ␉return OSSwapHostToBigInt32(result);␊ |
| }␊ |
