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Make it a more effective test.

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git-svn-id: svn://svn.valgrind.org/vex/trunk@696
This commit is contained in:
Julian Seward 2005-01-06 15:46:22 +00:00
parent 694bd05976
commit bac1d406d1
1 changed files with 18 additions and 12 deletions
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30
VEX/test/frstor.c
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@ -2,6 +2,15 @@
#include <stdio.h>
#include <stdlib.h>
void do_fsave_interesting_stuff ( void* p )
{
asm __volatile__("fninit");
asm __volatile__("fldpi");
asm __volatile__("fld1");
asm __volatile__("fldln2");
asm __volatile__("fsave (%0)" : : "r" (p) : "memory" );
}
void do_fsave ( void* p )
{
asm __volatile__("fsave (%0)" : : "r" (p) : "memory" );
@ -54,23 +63,20 @@ void show_fpustate ( unsigned char* buf, int hide64to80 )
int main ( int argc, char** argv )
{
int i;
unsigned short* buf = malloc(54*sizeof(short));
unsigned short* buf1 = malloc(54*sizeof(short));
unsigned short* buf2 = malloc(54*sizeof(short));
int xx = argc > 1;
printf("Re-run with any arg to suppress least-significant\n"
" 16 bits of FP numbers\n");
for (i = 0; i < 54; i++)
buf[i] = i;
buf[0] = 0x037f;
/* Create an initial image. */
do_fsave_interesting_stuff(buf1);
show_fpustate( (unsigned char*)buf1, xx );
for (i = 0; i < 8; i++)
*(long double *)(&buf[14+5 *i]) = 20.0 + 0.1234 * i;
do_frstor(buf);
do_fsave(buf);
show_fpustate( (unsigned char*)buf, xx );
/* Reload it into buf2. */
do_frstor(buf1);
do_fsave(buf2);
show_fpustate( (unsigned char*)buf2, xx );
return 0;
}