1 /* { dg-do assemble { target x86_64-*-* } } */
2 /* { dg-require-effective-target lp64 } */
3
4 #include "../analyzer-decls.h"
5
6 typedef unsigned __INT32_TYPE__ u32;
7 typedef unsigned __INT64_TYPE__ u64;
8
9 extern void check_init_u32 (u32 v);
10 extern void check_init_u64 (u32 v);
11
12 /* Adapted from linux kernel: arch/x86/include/asm/processor.h (GPL-2.0). */
13
native_cpuid(unsigned int * eax,unsigned int * ebx,unsigned int * ecx,unsigned int * edx)14 static inline void native_cpuid(unsigned int *eax, unsigned int *ebx,
15 unsigned int *ecx, unsigned int *edx)
16 {
17 /* ecx is often an input as well as an output. */
18 asm volatile("cpuid"
19 : "=a" (*eax),
20 "=b" (*ebx),
21 "=c" (*ecx),
22 "=d" (*edx)
23 : "0" (*eax), "2" (*ecx)
24 : "memory");
25 }
26
cpuid(unsigned int op,unsigned int * eax,unsigned int * ebx,unsigned int * ecx,unsigned int * edx)27 static inline void cpuid(unsigned int op,
28 unsigned int *eax, unsigned int *ebx,
29 unsigned int *ecx, unsigned int *edx)
30 {
31 *eax = op;
32 *ecx = 0;
33 native_cpuid(eax, ebx, ecx, edx);
34 }
35
test_1(void)36 void test_1 (void)
37 {
38 u32 eax, ebx, ecx, edx;
39 cpuid(0x8000001e, &eax, &ebx, &ecx, &edx); /* from "amd_get_topology". */
40
41 /* Verify that they are now initialized. */
42 check_init_u32 (eax);
43 check_init_u32 (ebx);
44 check_init_u32 (ecx);
45 check_init_u32 (edx);
46 }
47