symbian-qemu-0.9.1-12/qemu-symbian-svp/tests/cris/check_lz.c
author mikek
Mon, 05 Jul 2010 15:30:26 +0100
branchGCC_SURGE
changeset 87 42ae69d3c4a8
parent 1 2fb8b9db1c86
permissions -rw-r--r--
1) Fix for Bug 3157 - Compilation error in gui_common.h 2) Fix for Bug 3158 - Compilation error in qemu-char.c 3) Fix for Bug 3160 - [GCCE] Illegal instruction in baseport/syborg/bootstrap/syborg.s 4) Fix for Bug 3162 - [GCCE] VFP math support needs excluded to build syborg ROM 5) Fix for Bug 3163 - [GCCE] Syborg baseport build breaks when EPOCROOT is not filesystem root 6) Fix for Bug 3164 - [GCCE] baseport/syborg/bld.inf needs to discriminate GCCE from ARMCC

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include "sys.h"

extern inline int cris_lz(int x)
{
	int r;
	asm ("lz\t%1, %0\n" : "=r" (r) : "r" (x));
	return r;
}

void check_lz(void)
{
	int i;

	if (cris_lz(0) != 32)
		err();
	if (cris_lz(1) != 31)
		err();
	if (cris_lz(2) != 30)
		err();
	if (cris_lz(4) != 29)
		err();
	if (cris_lz(8) != 28)
		err();

	/* try all positions with a single bit.  */
	for (i = 1; i < 32; i++) {
		if (cris_lz(1 << (i-1)) != (32 - i))
			err();
	}

	/* try all positions with all bits.  */
	for (i = 1; i < 32; i++) {
		/* split up this computation to clarify it.  */
		uint32_t val;
		val = (unsigned int)-1 >> (32 - i);
		if (cris_lz(val) != (32 - i))
			err();
	}
}

int main(void)
{
	check_lz();
	pass();
	exit(0);
}