From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wei Yongjun Subject: [PATCH] test: add test for bsf/bsr instruction Date: Mon, 09 Aug 2010 18:01:13 +0800 Message-ID: <4C5FD1E9.1030906@cn.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=GB2312 Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org To: Avi Kivity Return-path: Received: from cn.fujitsu.com ([222.73.24.84]:56854 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1755958Ab0HIKDi (ORCPT ); Mon, 9 Aug 2010 06:03:38 -0400 Sender: kvm-owner@vger.kernel.org List-ID: This patch add test for bsf/bsr instruction. Signed-off-by: Wei Yongjun --- x86/emulator.c | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 64 insertions(+), 0 deletions(-) diff --git a/x86/emulator.c b/x86/emulator.c index aef5d90..348d548 100644 --- a/x86/emulator.c +++ b/x86/emulator.c @@ -462,6 +462,69 @@ void test_setcc(void *mem) report("setnle r/m8", *memb == 0); } +void test_bsfbsr(void *mem) +{ + unsigned long *memq = mem, rax; + + asm volatile("movw $0xC000, (%[memq])\n\t" + "bsfw (%[memq]), %%ax\n\t" + ::[memq]"r"(memq)); + asm ("mov %%rax, %[rax]": [rax]"=m"(rax)); + report("bsfw r/m, reg", rax == 14); + + asm volatile("movl $0xC0000000, (%[memq])\n\t" + "bsfl (%[memq]), %%eax\n\t" + ::[memq]"r"(memq)); + asm ("mov %%rax, %[rax]": [rax]"=m"(rax)); + report("bsfl r/m, reg", rax == 30); + + asm volatile("movq $0xC00000000000, %%rax\n\t" + "movq %%rax, (%[memq])\n\t" + "bsfq (%[memq]), %%rax\n\t" + ::[memq]"r"(memq)); + asm ("mov %%rax, %[rax]": [rax]"=m"(rax)); + report("bsfq r/m, reg", rax == 46); + + asm volatile("movq $0, %%rax\n\t" + "movq %%rax, (%[memq])\n\t" + "bsfq (%[memq]), %%rax\n\t" + "jnz 1f\n\t" + "movl $1, %[rax]\n\t" + "1:\n\t" + :[rax]"=m"(rax) + :[memq]"r"(memq)); + report("bsfq r/m, reg", rax == 1); + + asm volatile("movw $0xC000, (%[memq])\n\t" + "bsrw (%[memq]), %%ax\n\t" + ::[memq]"r"(memq)); + asm ("mov %%rax, %[rax]": [rax]"=m"(rax)); + report("bsrw r/m, reg", rax == 15); + + asm volatile("movl $0xC0000000, (%[memq])\n\t" + "bsrl (%[memq]), %%eax\n\t" + ::[memq]"r"(memq)); + asm ("mov %%rax, %[rax]": [rax]"=m"(rax)); + report("bsrl r/m, reg", rax == 31); + + asm volatile("movq $0xC00000000000, %%rax\n\t" + "movq %%rax, (%[memq])\n\t" + "bsrq (%[memq]), %%rax\n\t" + ::[memq]"r"(memq)); + asm ("mov %%rax, %[rax]": [rax]"=m"(rax)); + report("bsrq r/m, reg", rax == 47); + + asm volatile("movq $0, %%rax\n\t" + "movq %%rax, (%[memq])\n\t" + "bsrq (%[memq]), %%rax\n\t" + "jnz 1f\n\t" + "movl $1, %[rax]\n\t" + "1:\n\t" + :[rax]"=m"(rax) + :[memq]"r"(memq)); + report("bsrq r/m, reg", rax == 1); +} + int main() { void *mem; @@ -495,6 +558,7 @@ int main() test_incdecnotneg(mem); test_btc(mem); test_setcc(mem); + test_bsfbsr(mem); printf("\nSUMMARY: %d tests, %d failures\n", tests, fails); return fails ? 1 : 0; -- 1.7.0.4