sys7.1-doc-wip/ProcessMgr/Startup.c

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/*
Hacks to match MacOS (most recent first):
<Sys7.1> 8/3/92 Reverted <26> by using the non-standard "MyGestalt" glue.
9/2/94 SuperMario ROM source dump (header preserved below)
*/
2019-07-27 14:37:48 +00:00
/*
File: Startup.c
Contains: Main startup for the Process Manager.
Written by: Erich Ringewald
Copyright: © 1986-1993 by Apple Computer, Inc., all rights reserved.
Change History (most recent first):
<SM28> 7/21/93 joe Back out <SM27>.
<27> 10/28/92 DTY Use new Get/Set macros to access ExpandMem.
<26> 9/25/92 DRF Get rid of MyGestalt, since inline glue exists
<25> 8/26/92 DTY Change ModSquads funky conditional to use #ifdefs like everyone
else.
<24> 8/26/92 DTY Roll in latest changes for A/UX.
<23> 8/17/92 hjcr Adding support for OCE's "defer drag" feature. Conditionally
compiled under MODSQUAD
<22> 5/11/92 JSM #1029437 <DC>: Set emProcessMgrExists to true after calling
MyNewGestalt().
<21> 3/30/92 DTY #1025416,<DDG>: Look for Skia in InitConfig and set skiaExists
accordingly.
<20> 3/23/92 JSM OSEvents.h is obsolete, use Events.h.
<19> 1/11/92 YK Initialize new globals for the TSM.
<18> 11/22/91 DTY Initialize allocateGMBlkInSysHeap to be false. GMBlk normally
tries to allocate its block in the Process Manager zone first,
except when an 'obit' event is being sent.
<17> 11/1/91 DTY Set TOPMAPHANDLE to point to the first system override map
instead of SYSMAPHANDLE in main().
<16> 10/15/91 YK Added initializing code for the Text Service Manager.
<15> 9/16/91 DFH Set initialProcessSR in InitializeScheduler. Needed for
NuKernel.
<14> 5/23/91 dba do a style of coercion that MPW 3.2 C likes
<13> 1/28/91 DFH JSM,#81425: Removed inhibit_DAs mechanism.
<12> 1/15/91 DFH (VL) Conditionalize out FloatAUXUp.
<11> 1/14/91 DFH (dba) Make system mode per process.
<10> 1/14/91 DFH (JDR) Conditionalize out AUX support.
<8> 1/8/91 DFH (rdd) Got rid of pErrantProcess since it is no longer needed.
<7> 12/15/90 DFH Main now initializes srcMyScrapInfo.pScrapOwner.
<6> 12/14/90 DFH InitializeScheduler now initializes kernelMode.
<5> 12/13/90 JWM For 7.0B3, sending the AppleEvent message to the network
extension (Network Setup) in the shell program (Finder 7.0)
about the PPCToolbox not initializing was removed.
<4> 12/5/90 DFH Integrated AUX support.
<3> 11/26/90 DFH Change trespass() to dbmsg().
<0> 9/2/86 ELR New Today.
*/
#pragma segment INIT
#include <types.h>
#include <memory.h>
#include <menus.h>
#include <files.h>
#include <quickdraw.h>
#include <events.h>
#include <resources.h>
#include <scrap.h>
#include <osutils.h>
#include <retrace.h>
#include <fonts.h>
#include <dialogs.h>
#include <textedit.h>
#include <segload.h>
#include <errors.h>
#include <GestaltEqu.h>
#include <EPPC.h>
#include <AppleEventsInternal.h>
#include <MFPrivate.h>
#include <ResourceMgrPriv.h>
#include "Lomem.h"
#include "SysMisc.h"
#include "Glue.h"
#include "Data.h"
#include "OSDispatchPrivate.h"
#include "Patches.h"
#include "Aux.h"
#include "Puppet.h"
#include "HList.h"
#include "Zone.h"
#include "EppcPrivate.h"
#include "AppleEventExtensions.h"
/* Some function prototypes that should be in (yet another) header file */
void MyNewGestalt(void);
void InitExceptions(void);
void GetSwitchTab(void);
void InitSystemMenus(void);
void VNInit(void);
void FMKill(Boolean);
/* Function prototypes internal to this file */
void InitializeEnvironment(void);
void InitializeScheduler(void);
void InitConfig(void);
void FloatMainUp(void);
void FloatKernelUp(void);
void FloatEppcUp(void);
void FloatAUXUp(void);
main(void)
{
LaunchResults finderLaunchResults;
Handle ourScrapHdl;
HighLevelEventRecord theEvent;
FSSpec finderSpec;
_DataInit(); /* Initialize our global data */
InitializeEnvironment(); /* Adjust machine environment to our liking */
InstallPatches(); /* Install our patches */
InitializeScheduler(); /* Initialize our global structures */
/* Locate Process Mgr's scrap handle BEFORE launches */
ourScrapHdl = SCRAPHANDLE;
/* In case BG app dies before we launch FINDERNAME */
pShellProcess = ((Ptr) -1);
/* Launch startup background applications */
if ((EXTENSIONSENABLEBYTE & (1 << ExtensionsEnabledBit)) != 0)
LaunchFacelessTasks();
THEZONE = ProcessMgrZone;
if ((finderLaunchResults.LaunchError = FSMakeFSSpec(BOOTVOL, 0, FINDERNAME, &finderSpec)) == noErr)
StandardLaunch(&finderSpec, launchUseMinimum, 0, nil, &finderLaunchResults, nil);
/* Quick Restore: Have to set zone to sys to do _UnloadSeg correctly */
THEZONE = SYSZONE; CURMAP = SYSMAP; TOPMAPHANDLE = GetOverrideMap(SYSMAPHANDLE);
/* Bomb box if the Finder launch failed */
if (finderLaunchResults.LaunchError != noErr)
SysError(dsFinderErr);
/* Remember who we launched from this special place of honor */
pShellProcess = finderLaunchResults.pNewProcess;
pShellProcess->p_dadProcess = nil;
ShellWasFinderType = IS_FINDER(pShellProcess);
/* Dump scrap since we don't use it */
if (ourScrapHdl != nil)
DisposHandle(ourScrapHdl);
/* Next Process Mgr call should use Process Mgr stack as kernel stack */
kernelstack = initCurStackBase;
/* Prepare to execute Finder */
coercionState = CS_INIT;
srcMyScrapInfo.pScrapOwner = pFrontProcess = pShellProcess;
pFrontProcess->p_state = PRRUN;
/* Unload initialization code before leaving, and also
* remove the handle from the system res map.
* NOTE: This leaves us running in a dead code segment. But the current
* Resource Manager and Memory Manager let us get away with this
* for now. All we need to do is make the switch_task call, since its
* code is in another segment, and will never return.
*/
{
CodeEntry *pCodeEntry; /* Needed explicitly because of C compiler bug */
pCodeEntry = InitializeEnvironment;
UnloadSeg(pCodeEntry);
ReleaseResource(GET_SCOD_HDL_FROM_FNC_PTR(pCodeEntry));
}
/* Send Finder AppleEvents a) to say that machine was just booted, and b) to give a
* message to the network extension if PPC wouldn't initialize.
*/
SetAppleEvent(aeStartup, &theEvent);
(void) BeginSystemMode();
(void) PostHighLevelEvent((EventRecord *) &theEvent, (u_long) &pShellProcess->p_serialNumber, 0, nil, 0, receiverIDisPSN);
/* For 7.0B3 the message to the network extension in the shell program about the
* PPCToolbox not initializing was removed. No one to support Responder, so it
* was rewritten.
*/
(void) EndSystemMode();
/* Switch to the Finder we launched, never to return (hopefully) */
switch_task(pFrontProcess);
dbmsg("Illegal return to the Process Manager.");
}
/* Dummy routines to force load of CODE segments */
#pragma segment Main
void
FloatMainUp(void)
{
}
#pragma segment kernel_segment
void
FloatKernelUp(void)
{
}
#pragma segment eppc_segment
void
FloatEppcUp(void)
{
}
#ifdef HAS_AUX_PROCESSMGR
#pragma segment AUX_SEGMENT
/* null procedure so that segment can get loaded appropriately */
void FloatAUXUp(void)
{
}
#endif HAS_AUX_PROCESSMGR
#pragma segment INIT
/* This is the size we give the system heap at startup. It's exact value is somewhat
* unimportant. It mainly determines how many times we'll have to call the System
* zone or Process Mgr zone GrowZone procedures before things settle out. Make sure
* it's small enough that the initial Finder launch goes smoothly.
*/
#define INIT_SYS_HEAP_SIZE (96*1024)
/* InitializeEnvironment. Set up the initial world (i.e. heap, qd globals, etc.). */
void
InitializeEnvironment(void)
{
CodeEntry *pCodeEntry;
register OSDispatchEntry *pDispatchEntry;
/* Set up our own lomem A5 ptr */
PROCESSMGRGLOBALS = CURRENTA5;
/* Save initial location zero before we call any traps that might change it! */
initLocationZero = LOCATIONZERO;
/* Get configuration information */
InitConfig();
/* Get table of switchable low memory locations (in System Heap) */
GetSwitchTab();
/* Expand the zone up to the APPLLIMIT */
MaxApplZone();
/* initialize the scrap, if necessary */
THEZONE = SYSZONE;
if (SCRAPSTATE == (-1))
(void) ZeroScrap();
THEZONE = APPLZONE;
/* Unload data init seg and release its CODE resource (to get it out of map). */
pCodeEntry = _DataInit;
UnloadSeg(pCodeEntry);
ReleaseResource(GET_SCOD_HDL_FROM_FNC_PTR(pCodeEntry));
/* Set up dynamic heaps */
InitHeaps();
THEZONE = SYSZONE;
/* Load in the code segments now that zone expansion code is in place */
FloatMainUp();
FloatKernelUp();
FloatEppcUp();
#ifdef HAS_AUX_PROCESSMGR
if (AUXIsPresent)
FloatAUXUp();
#endif HAS_AUX_PROCESSMGR
/* Alter dispatch table to go directly to routine, bypassing the jump table */
pDispatchEntry = &OSDispatchTable[0];
while (pDispatchEntry->dispatchAddr != nil)
{
pDispatchEntry->dispatchAddr = ROUTINE_ADDR(pDispatchEntry->dispatchAddr);
pDispatchEntry += 1;
};
/* Make sure PROCESSMGRGLOBALS world is reasonable */
InitGraf(&qd.thePort);
#ifdef MM_DEBUG
{
pascal void DebugNotifyPurge(void);
extern Ptr oldPurgeProc;
oldPurgeProc = (Ptr)SYSZONE->purgeProc;
SYSZONE->purgeProc = (ProcPtr)DebugNotifyPurge;
}
#endif MM_DEBUG
/* Initialize window manager in system heap ('cause it's shared in our patch)
* NOTE: Calls InitFonts for InitWindow's sake on older machines.
*/
InitFonts();
InitWindows();
MFLayer = GetCurLayer();
IMLayer = nil;
THEZONE = APPLZONE;
#ifdef HAS_AUX_PROCESSMGR
/* Adjust ourselves to running under AUX */
if (AUXIsPresent)
AUX_Setup();
#endif HAS_AUX_PROCESSMGR
/* We want to run from the boot volume. */
SetVol(nil, BOOTVOL);
/* Set up volume notification mechanism */
VNInit();
}
/* GetKernelMode. Inline to fetch the processor's SR and save it sans all bits
* except the supervisor/user mode one.
*/
#pragma parameter GetKernelMode(__A0)
void
GetKernelMode(short *storage)
= {0x40C0, 0x0240, 0x2000, 0x3080};
/* MOVE SR,D0
* ANDI.W #$2000,D0
* MOVE.W D0,(A0)
*/
/* InitializeScheduler. Now that our machine environment looks good, prepare our data
* structures so we can run applications.
*/
void
InitializeScheduler(void)
{
PEntryPtr pProc;
Handle hdl;
u_size currSysHeapSize;
extern StringPtr SSSPromptpStr, MacOSPortNamepStr;
/* Initialize these before calling InitExceptions() because the exception
* handlers will want to look at them.
*/
pProc = pCurrentProcess = pNullProcess;
/* Install our exception handlers */
InitExceptions();
/* initialize the process list globals */
ProcessNumberSource = LowestNonSystemPSN;
ProcessIDSource = MAX_PROCESSID;
pProcessList = nil;
pFrontProcess = pNullProcess;
/* we are taking over the nullprocess */
MemClear(pProc, sizeof(PEntry));
pProc->p_state = PRNULL;
pProc->p_signature = NULLPROC_SIGNATURE;
pProc->p_version = SYS_VERSION;
SetPSN(kSystemProcess, &pProc->p_serialNumber);
pProc->p_zone = THEZONE;
pProc->p_size = (unsigned long) BUFPTR - (unsigned long) THEZONE;
/* Save useful startup values */
initialProcessSR = GetCPUStatusRegister() & (kCPUSupervisorMode | kCPUMasterStack);
initMemTop = MEMTOP;
initFSQueueHook = FSQUEUEHOOK;
/* Get the stack for kernel use set up. */
initCurStackBase = CURSTACKBASE;
kernelstack = nil;
kernelstackbase = (unsigned long) APPLZONE->bkLim;
GetKernelMode(&kernelMode);
/* Because app zone can't grow anymore */
kernelbusy = 0;
/* initialize the state lists */
pSleepingStateList = nil;
pDyingStateList = nil;
/* Now init some of the more mundane things. */
pDebugProcess = nil;
debugKeyTryCount = -1; /* Based on -1 as start */
pSystemQuitAllMsg = nil;
pLastBGProcess = nil;
nbacks = 0;
cutCopyCount = 0;
dont_switch = 0;
napOver = false;
(void) GetDeskPort((GrafPtr *) &desklayer);
desklayerowner = nil;
SystemTempMemHList = CreateHList(0);
/* Allocate handle for supporting the Text Service Manager */
fakeKeyHandle = (FakeKeyHandle)NewHandle( 0);
fakeKeyCount = 0;
dontGetFakeKey = 0;
tsmLayerOwner = nil;
routeEvent = false;
/* Get all the resources we need. Do the Process Mgr ones first. Wait to do system
* ones until we have THEZONE == SYSZONE. See note below.
*/
THEZONE = SYSZONE;
/* Get menu strings for scrap coercion */
hdl = Get1Resource('STR#',-16414);
pStrListCopyNamePrefix = (hdl == nil) ? nil : *((StrListHdl)hdl);
/* Get the strings for ePPC */
SSSPromptpStr = nil;
MacOSPortNamepStr = nil;
if ((hdl = Get1Resource('STR#',-16457)) != nil)
{
SSSPromptpStr = *hdl+(Ptr)2;
MacOSPortNamepStr = (Ptr)SSSPromptpStr + (Ptr)(*(char *)SSSPromptpStr);
MacOSPortNamepStr += (Ptr)1;
}
/* <18> This semaphore is only true when an 'obit' event is being sent from
SendDeathNotice. Set it to false to start off. */
allocateGMBlkInSysHeap = false;
/* Make sure there is some minimum sys heap size so we won't call
* the grow zone proc so many times to launch Finder.
*/
currSysHeapSize = (Ptr)SYSZONE->bkLim - (Ptr)SYSZONE;
if (currSysHeapSize < INIT_SYS_HEAP_SIZE)
(void)ProcessMgrSysGZProc(INIT_SYS_HEAP_SIZE - currSysHeapSize);
/* Initialize the puppet strings */
PuppetStringsInit();
/* Get rid of old system resources that were in the system heap */
THEZONE = APPLZONE;
RsrcZoneInit();
/* Switch to SYSZONE because any of the _GetResource calls below could move
* memory within the call, which is a problem for the rsrc mgr routine
* CheckLoad(). It saves and restores THEZONE, but our heap can move so restoring
* the "original" value is incorrect.
*/
THEZONE = SYSZONE;
{
/* Get the standard MDEF for the system menus. We must do this because some apps
* (like Finder!) aren't picky about what they get. We need a good version!
*/
long mdef = 'MDEF';
short mdefIndex = 0;
long mdefVersionID = 0;
Handle realMDefHdl;
#define SMALLEST_GOOD_MDEF_ID (13)
while (mdefVersionID < SMALLEST_GOOD_MDEF_ID)
{
if ((realMDefHdl = GetResource(mdef, mdefIndex)) == nil)
{
/* Couldn't find any tables */
assert(RESERR == memFullErr);
SysError(dsMemFullErr);
}
/* NOTE: Create struct for this */
mdefVersionID = *((unsigned long *)(*((Handle)realMDefHdl) + 8));
mdefIndex++;
}
standardMenuDefProcRsrc = (Handle) StripAddress(realMDefHdl);
}
/* Insert the system menus now that we have the MDEF */
InitSystemMenus();
/* Get rid of useless font width tables, etc. Must be done after InitSystemMenus,
* because menu installers need font info set up.
*/
FMKill(false);
/* Announce our arrival */
MyNewGestalt();
/* Let other parts of system software know we are here without having to call the gestalt routine we just installed */
SetExpandMemProcessMgrExists((short)true);
/* Initialize the Event Program to Program Communication (can load drivers) */
ePPCInit();
/* End of sys resources */
THEZONE = ProcessMgrZone;
}
/* InitConfig. Set up hardware/software configuration information, based on the
* word of our wonderboy, Gestalt. Only gets the info we actually need. Sets
* defaults if selector not installed. The defaults are somewhat impossible to
* know for FPU and keyboard types, but their selectors should always be safe.
*/
void
InitConfig(void)
{
long gestaltResult;
/* set defaults in case selector undefined */
In32BitMode = false;
Colorized = false;
MachineHasFPU = false;
MachineHasMacPlusKbd = false;
#ifdef HAS_AUX_PROCESSMGR
AUXIsPresent = false;
#endif HAS_AUX_PROCESSMGR
/* Check processor addressing mode */
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if (MyGestalt(gestaltAddressingModeAttr,&gestaltResult) == noErr) // ex<26> <Sys7.1>
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In32BitMode = ((gestaltResult & (1 << gestalt32BitAddressing)) != 0);
/* Check QuickDraw version */
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if (MyGestalt(gestaltQuickdrawVersion,&gestaltResult) == noErr) // ex<26> <Sys7.1>
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Colorized = ((gestaltResult & 0xFFFF) >= gestalt8BitQD);
/* Does this machine have an FPU? */
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if (MyGestalt(gestaltFPUType,&gestaltResult) == noErr) // ex<26> <Sys7.1>
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MachineHasFPU = (gestaltResult != gestaltNoFPU);
/* Does this machine have an older style keyboard (without an escape key)? */
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if (MyGestalt(gestaltKeyboardType,&gestaltResult) == noErr) // ex<26> <Sys7.1>
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MachineHasMacPlusKbd = (gestaltResult <= gestaltMacPlusKbd);
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if (MyGestalt(gestaltGraphicsVersion,&gestaltResult) == noErr) // ex<26> <Sys7.1>
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skiaExists = true;
else
skiaExists = false;
#ifdef MODSQUAD
/* Check whether drag manager is installed. */
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if (MyGestalt(gestaltDragMgrVersion, &gestaltResult) == noErr) // ex<26> <Sys7.1>
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gDragMgrIsAvailable = true;
#endif
#ifdef HAS_AUX_PROCESSMGR
/* Check whether we're running under AUX. */
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if (MyGestalt(gestaltAUXVersion, &gestaltResult) == noErr && AUX_EnableCoffLaunch()) // ex<26> <Sys7.1>
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AUXIsPresent = true;
#endif HAS_AUX_PROCESSMGR
}