12 #define DB_VAL 0xDEADBEEF
19 	* - Write 0xDEADBEEF values during system call into registers  in z_impl_test_cpu_write_reg()
29 		"movl $0xDEADBEEF, %%eax;\n\t"  in z_impl_test_cpu_write_reg()
30 		"movl $0xDEADBEEF, %%ebx;\n\t"  in z_impl_test_cpu_write_reg()
31 		"movl $0xDEADBEEF, %%ecx;\n\t"  in z_impl_test_cpu_write_reg()
32 		"movl $0xDEADBEEF, %%edx;\n\t"  in z_impl_test_cpu_write_reg()
33 		"movl $0xDEADBEEF, %%edi;\n\t"  in z_impl_test_cpu_write_reg()
38 		"movq $0xDEADBEEF, %%rax;\n\t"  in z_impl_test_cpu_write_reg()
39 		"movq $0xDEADBEEF, %%rcx;\n\t"  in z_impl_test_cpu_write_reg()
40 		"movq $0xDEADBEEF, %%rdx;\n\t"  in z_impl_test_cpu_write_reg()
41 		"movq $0xDEADBEEF, %%rsi;\n\t"  in z_impl_test_cpu_write_reg()
42 		"movq $0xDEADBEEF, %%rdi;\n\t"  in z_impl_test_cpu_write_reg()
43 		"movq $0xDEADBEEF, %%r8;\n\t"  in z_impl_test_cpu_write_reg()
44 		"movq $0xDEADBEEF, %%r9;\n\t"  in z_impl_test_cpu_write_reg()
45 		"movq $0xDEADBEEF, %%r10;\n\t"  in z_impl_test_cpu_write_reg()
46 		"movq $0xDEADBEEF, %%r11;\n\t"  in z_impl_test_cpu_write_reg()
63  * the system call function writes into registers 0xDEADBEEF value
65  * if no 0xDEADBEEF value detected, that means CPU scrubbed registers
77 		"\t movl %%eax,%0" : "=r"(x86_reg_val[0]));  in ZTEST_USER()
79 		"\t movl %%ebx,%0" : "=r"(x86_reg_val[1]));  in ZTEST_USER()
81 		"\t movl %%ecx,%0" : "=r"(x86_reg_val[2]));  in ZTEST_USER()
83 		"\t movl %%edx,%0" : "=r"(x86_reg_val[3]));  in ZTEST_USER()
85 		"\t movl %%edi,%0" : "=r"(x86_reg_val[4]));  in ZTEST_USER()
87 	for (int i = 0; i < 5; i++) {  in ZTEST_USER()
89 				"reg val is 0xDEADBEEF, "  in ZTEST_USER()
98 		"\t movq %%rax,%0" : "=r"(x86_64_reg_val[0]));  in ZTEST_USER()
100 		"\t movq %%rcx,%0" : "=r"(x86_64_reg_val[1]));  in ZTEST_USER()
102 		"\t movq %%rdx,%0" : "=r"(x86_64_reg_val[2]));  in ZTEST_USER()
104 		"\t movq %%rsi,%0" : "=r"(x86_64_reg_val[3]));  in ZTEST_USER()
106 		"\t movq %%rdi,%0" : "=r"(x86_64_reg_val[4]));  in ZTEST_USER()
108 		"\t movq %%r8,%0" : "=r"(x86_64_reg_val[5]));  in ZTEST_USER()
110 		"\t movq %%r9,%0" : "=r"(x86_64_reg_val[6]));  in ZTEST_USER()
112 		"\t movq %%r10,%0" : "=r"(x86_64_reg_val[7]));  in ZTEST_USER()
114 		"\t movq %%r11,%0" : "=r"(x86_64_reg_val[8]));  in ZTEST_USER()
116 	for (int i = 0; i < 9; i++) {  in ZTEST_USER()
118 				"register value is 0xDEADBEEF, "  in ZTEST_USER()