From: Wei Yongjun <[email protected]> This patch add test for bsf/bsr instruction.
Signed-off-by: Wei Yongjun<[email protected]> Signed-off-by: Avi Kivity <[email protected]> diff --git a/x86/emulator.c b/x86/emulator.c index e278812..571f48d 100644 --- a/x86/emulator.c +++ b/x86/emulator.c @@ -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; -- To unsubscribe from this list: send the line "unsubscribe kvm-commits" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
