Return to pipe13.c CVS log

Up to [Power 6/32 Unix Tahoe 4.2BSD] / cci / d / fpevent

Power 6/32 Unix version 1.21

#include "evt_defs.h"

/*
 *********************************************************************
 *	FPP PIPELINED EVENTS TEST #13
 *
 *  This test will execute the following code: "LDF CVFL NEGF"
 * with an integer overflow fault on the CVFL. We will make sure that:
 * 1. The fault is detected, and
 * 2. the NEGF instruction is not executed.
 *********************************************************************
*/
pipe13()
{
	asm("moval (r13),_pre_event_fp");	/* save the frame pointer */
	asm("moval (r14),_pre_event_sp");	/* save the stack pointer */
	precision = SGL;
	test_event = ARITH_CODE;		/* expect an arithmetic fault */
	exp_code = INT_OVFL_CODE;		/*  - specificly underflow    */
	exp_event = FALSE;			/* ... but not yet            */
	asm("movab _pipe13_ret,_event_return"); /* set event return address  */
	max_index = cvdl_ov_cnt;		/* set max operand index      */
	for( index = 0; index < max_index; index++ )
	{
	     dbl_ld_acc = cvfl_ov_dat[index].op_1;	/* get the Acc data  */
	     if( dbl_ld_acc.m & 0x7f800000 )
		 dbl_expected.m = dbl_ld_acc.m;	     /* Acc shouldn't change */
	     else
		 dbl_expected.m = 0;			/* expect a 'good 0' */
	     asm("bispsw $0x60");			/* enable ovfl,undfl */
	     asm(".globl _pipe13_lp1");
	     asm("_pipe13_lp1:");
	     asm("ldf _dbl_ld_acc");			/* load the Acc.     */
	     exp_event = test_event;			/* expect event soon */
	     asm("cvfl _dbl_value_1");			/* trigger the event */
	     asm("negf");				/* shouldn't get here*/
/*
 * If we got to here then there was no event
*/
	     if( force_loop )
		  asm("brw _pipe13_lp1");;	/* loop on the error         */
	     exp_event = FALSE;			/* reset event expected flag */
	     asm("bicpsw $0x60");		/* disable ovfl & undfl evts */
	     asm("movl _pre_event_fp,fp");	/* restore the frame pointer */
	     asm("movl _pre_event_sp,sp");	/* restore the stack pointer */
	     asm("stf _dbl_st_acc");		/* save the accumulator      */
	     no_pipe13_evt();;			/* report the error          */
/*
 * Come here after the event
*/
	     asm(".globl _pipe13_ret");
	     asm("_pipe13_ret:");
	     asm("movl _pre_event_fp,fp");	/* restore the frame pointer */
	     asm("movl _pre_event_sp,sp");	/* restore the stack pointer */
	     if( force_loop )
		  asm("brw _pipe13_lp1");;	/* loop on the error         */
	     asm("bicpsw $0x60");		/* disable ovfl & undfl evts */
	     if( post_evt_acc.m == (dbl_ld_acc.m ^ 0x80000000) ) 
		  pipe13_queue_er();		/* the NEGF was executed     */
	     else if( post_evt_acc.m != dbl_expected.m )  /* Acc modified?   */
		  bad_pipe13_result();		/* incorrect result error    */
	     
	}
}



/****************************************************************************
*		Report an "EVENT NOT DETECTED" error
*
* Cycle: xx. EVT test xx. subtest xx. No overflow fault seen. index = xx
* inst = LDF op1, CVFL op2, NEGF    (integer overflow fault on the CVDF)
* op1 = xxxxxxxx,   op2 = xxxxxxxx,   final Acc. = xxxxxxxx
****************************************************************************/
no_pipe13_evt()
{
	errcnt++;				/* bump the error count    */
	if ( prt_error ) 
	{
	     print_pipe13_er( ". No overflow fault seen." );
	     writes("op1 = ");
	     write32h( dbl_ld_acc.m );
	     writes(",   op2 = ");
	     write32h( dbl_value_1.m );
	     writes(",   final Acc. = ");
	     write32h( dbl_st_acc.m );
	     writec('\n');
	}
	if ( halt_flg ) 			/* halt on error?          */
	     pipe13_halt( 1 );			/* halt with a code of 1   */
	if ( loop_on_err ) 
	{
	     force_loop = TRUE;			/* set the force loop flag */
	     asm("jmp _pipe13_lp1");		/* and loop                */
	};
}




/****************************************************************************
*		Report an "BAD ACCUMULATOR AFTER THE EVENT" error
*
* Cycle: xx. EVT test xx. subtest xx. Bad final Accumulator. index = xx
* inst = LDF op1, CVFL op2, NEGF    (integer overflow fault on the CVDF)
* The NEGF instruction should not be executed.
* op1 = xxxxxxxx,  final Acc. = xxxxxxxx,  expected = xxxxxxxx 
****************************************************************************/
bad_pipe13_result()
{
	errcnt++;				/* bump the error count    */
	if ( prt_error ) 
	{
	     print_pipe13_er( ". Bad final Accumulator" );
	     writes(
	      "The NEGF instruction should not be executed\n");
	     writes("op1 = ");
	     write32h( dbl_ld_acc.m );
	     writes(",  final Acc. = ");
	     write32h( post_evt_acc.m );
	     writes(",  expected = ");
	     write32h( dbl_expected.m );	/* expected = initial data */
	     writec('\n');
	}
	if ( halt_flg ) 			/* halt on error?           */
	     pipe13_halt( 2 );			/* halt with a code of 2    */
	if ( loop_on_err ) 
	{
	     force_loop = TRUE;		/* set the force loop flag */
	     asm("jmp _pipe13_lp1");	/* and loop                */
	};
}





/****************************************************************************
*		Report an "FPP queue not cleared" message
*
* Cycle: xx. EVT test xx. subtest xx. Fpp queue not cleared. index = xx
* inst = LDF op1, CVFL op2, NEGF    (integer overflow fault on the CVDF)
* The NEGF instruction was apparently executed.
* op1 = xxxxxxxx,   final Acc. = xxxxxxxx
* op2 = xxxxxxxx,     expected = xxxxxxxx
****************************************************************************/
pipe13_queue_er()
{
	errcnt++;				/* bump the error count    */
	if ( prt_error ) 
	{
	     print_pipe13_er( ". Fpp queue not cleared" );
	     writes(
	      "The NEGF instruction was apparently executed.\n");
	     writes("op1 = ");
	     write32h( dbl_ld_acc.m );
	     writes(",   final Acc. = ");
	     write32h( post_evt_acc.m );
	     writes("\nop2 = ");
	     write32h( dbl_value_1.m );
	     writes(",     expected = ");
	     write32h( dbl_expected.m );	/* expected = initial data */
	     writec('\n');
	}
	if ( halt_flg ) 			/* halt on error?           */
	     pipe13_halt( 3 );			/* halt with a code of 3    */
	if ( loop_on_err ) 
	{
	     force_loop = TRUE;		/* set the force loop flag */
	     asm("jmp _pipe13_lp1");	/* and loop                */
	};
}




/****************************************************************************
*		Report an error message of the form:
*
* Cycle: xx. EVT test xx. subtest xx. <your message here> index = xx
* inst = LDF op1, CVFL op2, NEGF    (integer overflow fault on the CVDF)
****************************************************************************/
print_pipe13_er( msg )
char *msg;					/* error message to print   */
{
	     if( errcnt == 1 )			/* 1st error?               */
		  writes(" \n");		/* start a new print line   */
	     writes("Cycle: ");
	     writed( cycle );
	     writes("  EVT test ");
	     writed( test_no );
	     writes(". subtest ");
	     writed( subtest );
	     writes( msg );			/* print the message */
	     writes(" index = ");
	     writed( index );
	     writes(
  "\ninst = LDF op1, CVFL op2, NEGF    (integer overflow fault on the CVDF)\n");
}



/****************************************************************************
*		halt on error routine
****************************************************************************/
pipe13_halt( code )
int code;				/* error code to halt with */
{
	err_code = code;
	sgl_value_1 = dbl_ld_acc.m;
	sgl_value_2 = post_evt_acc.m;
	sgl_value_3 = dbl_value_1.m;
	asm("movl _test_no,r0");		/* r0  = test number       */
	asm("movl _subtest,r1");		/* r1  = subtest number    */
	asm("movl _err_code,r2");		/* r2  = error code        */
	asm("movl _cycle,r3");			/* r3  = cycle count       */
	asm("movl _sgl_value_1,r4");		/* r4  = initial Acc.      */
	asm("movl _sgl_value_2,r5");		/* r5  = post event Acc.   */
	asm("movl _sgl_value_3,r6");		/* r6  = integer stored    */
	asm("movl _sgl_value_4,r7");		/* r7  = expected Acc.     */
	asm("movl _index,r8");			/* r8  = data index        */
	asm("halt");				/* HALT ...                */
}

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