/*** basiccrt.s generated on Dec 08, 2006 at 13:33:52.**** Copyright (C) 2000-2004 Analog Devices Inc., All Rights Reserved.** This contains Analog Devices Background IP and Development IP as** defined in the ADI/Intel Collaboration Agreement.**** This file is generated automatically based upon the options selected** in the Startup Code Wizard. Changes to the startup configuration** should be made by changing the appropriate options rather than** editing this file. Additional user code to be executed before calling** main can be inserted between the labels .start_of_user_code and** .end_of_user_code. This code is preserved if the CRT is re-generated.**** Configuration:-**     processor:                    ADSP-BF533**     cplb_init:                    false**     mem_init:                     false**     device_init:                  true**     init_regs:                    false**     zero_return_regs:             false**     profiling:                    false**     set_clock_and_power:          false***//////////////////////////////////////////////////////////////////// blackfin-edinburgh-core#include <Def_LPBlackfin.h>/////////////////////////////////////////////////////////////////// standard#define IVBh (EVT0 >> 16)#define IVBl (EVT0 & 0xFFFF)#define UNASSIGNED_VAL 0x8181#define INTERRUPT_BITS 0x400	// just IVG15#define SYSCFG_VALUE 0x30	.section/DOUBLEANY program;	.align 2;start://///////////////////////////////////////////////////////////////// blackfin-edinburgh-core	// Avoid BF532 Anomaly #22	R1 = SYSCFG_VALUE;	SYSCFG = R1;/////////////////////////////////////////////////////////////////// standard	// Zap loop counters to zero, to make sure that	// hw loops are disabled - it could be really baffling	// if the counters and bottom regs are set, and we happen	// to run into them.	R7 = 0;	LC0 = R7;	LC1 = R7;	// Clear the DAG Length regs too, so that it's safe to	// use I-regs without them wrapping around.	L0 = R7;	L1 = R7;	L2 = R7;	L3 = R7;	// Zero ITEST_COMMAND and DTEST_COMMAND	// (in case they have crud in them and	// does a write somewhere when we enable cache)	I0.L = (ITEST_COMMAND & 0xFFFF);	I0.H = (ITEST_COMMAND >> 16);	I1.L = (DTEST_COMMAND & 0xFFFF);	I1.H = (DTEST_COMMAND >> 16);	[I0] = R7;	[I1] = R7;	CSYNC;	// Initialise the Event Vector table.	P0.H = IVBh;	P0.L = IVBl;	// Install __unknown_exception_occurred in EVT so that 	// there is defined behaviour.	P0 += 2*4;		// Skip Emulation and Reset	P1 = 13;	R1.L = __unknown_exception_occurred;	R1.H = __unknown_exception_occurred;	LSETUP (.ivt,.ivt) LC0 = P1;.ivt:	[P0++] = R1;	// Set IVG15's handler to be the start of the mode-change	// code. Then, before we return from the Reset back to user	// mode, we'll raise IVG15. This will mean we stay in supervisor	// mode, and continue from the mode-change point, but at a	// much lower priority.	P1.H = supervisor_mode;	P1.L = supervisor_mode;	[P0] = P1;/////////////////////////////////////////////////////////////////// standard	// Initialise the stack.	// Note: this points just past the end of the section.	// First write should be with [--SP].	SP.L=ldf_stack_end;	SP.H=ldf_stack_end;	usp = sp;	// We're still in supervisor mode at the moment, so the FP	// needs to point to the supervisor stack.	FP = SP;	// And make space for incoming "parameters" for functions	// we call from here:	SP += -12;	R0 = INTERRUPT_BITS;	R0 <<= 5;	// Bits 0-4 not settable.	CALL.X __install_default_handlers;	R1 = SYSCFG;	R4 = R0;		// Save modified list for later	BITSET(R1,1);	SYSCFG = R1;	// Enable the cycle counter/////////////////////////////////////////////////////////////////// blackfin-edinburgh-core	// Set the port preferences of DAG0 and DAG1 to be	// different; this gives better performance when	// performing daul-dag operations on SDRAM.	P0.L = DMEM_CONTROL & 0xFFFF;	P0.H = DMEM_CONTROL >> 16;	R0 = [P0];	BITSET(R0, 12);	BITCLR(R0, 13);	[P0] = R0;	CSYNC;/////////////////////////////////////////////////////////////////// device-initialization	// initialise the devices known about for stdio.	CALL.X _init_devtab;.extern _init_devtab;.type _init_devtab,STT_FUNC;/////////////////////////////////////////////////////////////////// standard	//  Enable interrupts	STI R4;		// Using the mask from default handlers	RAISE 15;	// Move the processor into user mode.	P0.L=still_interrupt_in_ipend;	P0.H=still_interrupt_in_ipend;	RETI=P0;	NOP;		// Purely to prevent to stall warningstill_interrupt_in_ipend:	// execute RTI until we've `finished` servicing all	// interrupts of priority higher than IVG15. Normally one	// would expect to only have the reset interrupt in IPEND	// being serviced, but occasionally when debugging this may	// not be the case - if restart is hit when servicing an	// interrupt.	//	// When we clear all bits from IPEND, we'll enter user mode,	// then we'll automatically jump to supervisor_mode to start	// servicing IVG15 (which we will 'service' for the whole	// program, so that the program is in supervisor mode.	// Need to do this to 'finish' servicing the reset interupt.	RTI;supervisor_mode:	[--SP] = RETI;	// re-enables the interrupt system	R0.L = UNASSIGNED_VAL;	R0.H = UNASSIGNED_VAL;	// Push a RETS and Old FP onto the stack, for sanity.	[--SP]=R0;	[--SP]=R0;	// Make sure the FP is sensible.	FP = SP;	// And leave space for incoming "parameters"	SP += -12;/////////////////////////////////////////////////////////////////// cplusplus	CALL.X ___ctorloop; // run global scope C++ constructors.extern ___ctorloop;.type ___ctorloop,STT_FUNC;/*$VDSG<insert-code-before-main-entry>                          */.start_of_user_code:  // Insert additional code to be executed before main here.  // This code is preserved if the CRT is re-generated..end_of_user_code:/*$VDSG<insert-code-before-main-entry>                          *//////////////////////////////////////////////////////////////////// standard	// Read command-line arguments.	CALL.X __getargv;	r1.l=__Argv; 	r1.h=__Argv;.extern __getargv;.type __getargv,STT_FUNC;.extern __Argv;.type __Argv,STT_OBJECT;	// At long last, call the application program.	CALL.X _main;	CALL.X _exit;	// passing in main's return value.start.end:		// To keep the linker happy..global start;.type start,STT_FUNC;.global .start.end;.type .start.end,STT_FUNC;.extern _main;.type _main,STT_FUNC;.extern _exit;.type _exit,STT_FUNC;.extern ldf_stack_end;.extern __unknown_exception_occurred;.type __unknown_exception_occurred,STT_FUNC;.extern __install_default_handlers;.type __install_default_handlers,STT_FUNC;/////////////////////////////////////////////////////////////////// cplusplus.section/DOUBLEANY ctor;	.align 4;___ctor_table:	.byte4=0;				.global ___ctor_table;.type ___ctor_table,STT_OBJECT;.section/DOUBLEANY .gdt;        .align 4;___eh_gdt:.global ___eh_gdt;        .byte4=0;.type ___eh_gdt,STT_OBJECT;.section/DOUBLEANY .frt;        .align 4;___eh_frt:.global ___eh_frt;        .byte4=0;.type ___eh_frt,STT_OBJECT;