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106 lines
3.3 KiB
C
106 lines
3.3 KiB
C
/* -*-mode: C; fill-column: 78; c-basic-offset: 4; -*- */
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/*
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* Copyright 2004 by Eric House (fixin@peak.org). All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <PceNativeCall.h>
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#include "pnostate.h"
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#include "pace_gen.h"
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#include "palmmain.h"
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unsigned long
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realArmletEntryPoint( const void *emulStateP,
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void *userData68KP,
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Call68KFuncType* call68KFuncP );
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/* With arm-palmos-gcc, there can't be any .GOT references in the entry point
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(since those values get put inline BEFORE the function rather than
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after.) */
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unsigned long
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ArmletEntryPoint( const void *emulStateP,
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void *userData68KP,
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Call68KFuncType* call68KFuncP )
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{
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return realArmletEntryPoint( emulStateP,
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userData68KP,
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call68KFuncP );
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}
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unsigned long
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realArmletEntryPoint( const void *emulStateP,
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void *userData68KP,
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Call68KFuncType* call68KFuncP )
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{
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PNOState* loc;
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PNOState state;
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PnoletUserData* dataP;
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char* str;
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char buf[32];
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unsigned long result;
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unsigned long oldR10;
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unsigned long sp;
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loc = getStorageLoc();
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dataP = (PnoletUserData*)userData68KP;
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dataP->stateSrc = (PNOState*)Byte_Swap32((unsigned long)&state);
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dataP->stateDest = (PNOState*)Byte_Swap32((unsigned long)loc);
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state.emulStateP = emulStateP;
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state.call68KFuncP = call68KFuncP;
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state.gotTable = (unsigned long*)
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Byte_Swap32((unsigned long)dataP->gotTable);
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{
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STACK_START(unsigned char, stack, 4 );
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ADD_TO_STACK4(stack, userData68KP, 0);
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STACK_END(stack);
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(*call68KFuncP)( emulStateP,
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Byte_Swap32((unsigned long)dataP->storageCallback),
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stack, 4 );
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}
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asm( "mov %0, r10" : "=r" (oldR10) );
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asm( "mov r10, %0" : : "r" (state.gotTable) );
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asm( "mov %0, r13" : "=r" (sp) );
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StrPrintF( buf, "Launching PilotMain;sp=%lx", sp );
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WinDrawChars( buf, StrLen(buf), 5, 100 );
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result = PM2(PilotMain)( Byte_Swap16(dataP->cmd),
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Byte_Swap32((unsigned long)dataP->cmdPBP),
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Byte_Swap16(dataP->launchFlags) );
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str = "back from PilotMain";
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WinDrawChars( str, StrLen(str), 5, 150 );
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asm( "mov r10, %0" : : "r" (oldR10) );
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return result;
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}
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PNOState*
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getStorageLoc()
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{
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asm( "adr r0,data" );
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asm( "mov pc,lr" );
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asm( "data:" );
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asm( "nop" );
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asm( "nop" );
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asm( "nop" );
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/* The compiler's adding a "mov pc,lr" here too that we can overwrite. */
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}
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