Commit 2e16c7f6 authored by Wei Yongjun's avatar Wei Yongjun Committed by Avi Kivity
Browse files

Add test for bsf/bsr instruction



This patch add test for bsf/bsr instruction.

Signed-off-by: Wei Yongjun<yjwei@cn.fujitsu.com>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent b3261e48
......@@ -375,6 +375,69 @@ void test_btc(void *mem)
report("btcl reg, r/m", a[0] == 1 && a[1] == 2 && a[2] == 0x80000004);
}
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;
......@@ -407,6 +470,7 @@ int main()
test_stringio();
test_incdecnotneg(mem);
test_btc(mem);
test_bsfbsr(mem);
printf("\nSUMMARY: %d tests, %d failures\n", tests, fails);
return fails ? 1 : 0;
......
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