3  * mov_ss_trap.c: Exercise the bizarre side effects of a watchpoint on MOV SS
5  * This does MOV SS from a watchpointed address followed by various
6  * types of kernel entries.  A MOV SS that hits a watchpoint will queue
47 unsigned short ss;  variable
66 		dr0 = (unsigned long)&ss;  in enable_watchpoint()
135 	asm volatile ("mov %%ss, %[ss]" : [ss] "=m" (ss));  in main()
136 	printf("\tSS = 0x%hx, &SS = 0x%p\n", ss, &ss);  in main()
146 	asm volatile ("mov %[ss], %[tmp]" : [tmp] "=r" (nr) : [ss] "m" (ss));  in main()
148 	printf("[RUN]\tMOV SS; INT3\n");  in main()
149 	asm volatile ("mov %[ss], %%ss; int3" :: [ss] "m" (ss));  in main()
151 	printf("[RUN]\tMOV SS; INT 3\n");  in main()
152 	asm volatile ("mov %[ss], %%ss; .byte 0xcd, 0x3" :: [ss] "m" (ss));  in main()
154 	printf("[RUN]\tMOV SS; CS CS INT3\n");  in main()
155 	asm volatile ("mov %[ss], %%ss; .byte 0x2e, 0x2e; int3" :: [ss] "m" (ss));  in main()
157 	printf("[RUN]\tMOV SS; CSx14 INT3\n");  in main()
158 	asm volatile ("mov %[ss], %%ss; .fill 14,1,0x2e; int3" :: [ss] "m" (ss));  in main()
160 	printf("[RUN]\tMOV SS; INT 4\n");  in main()
162 	asm volatile ("mov %[ss], %%ss; int $4" :: [ss] "m" (ss));  in main()
165 	printf("[RUN]\tMOV SS; INTO\n");  in main()
168 	asm volatile ("add $1, %[tmp]; mov %[ss], %%ss; into"  in main()
169 		      : [tmp] "+r" (nr) : [ss] "m" (ss));  in main()
173 		printf("[RUN]\tMOV SS; ICEBP\n");  in main()
178 		asm volatile ("mov %[ss], %%ss; .byte 0xf1" :: [ss] "m" (ss));  in main()
182 		printf("[RUN]\tMOV SS; CLI\n");  in main()
184 		asm volatile ("mov %[ss], %%ss; cli" :: [ss] "m" (ss));  in main()
188 		printf("[RUN]\tMOV SS; #PF\n");  in main()
190 		asm volatile ("mov %[ss], %%ss; mov (-1), %[tmp]"  in main()
191 			      : [tmp] "=r" (nr) : [ss] "m" (ss));  in main()
199 		printf("[RUN]\tMOV SS; INT 1\n");  in main()
201 		asm volatile ("mov %[ss], %%ss; int $1" :: [ss] "m" (ss));  in main()
211 		printf("[RUN]\tMOV SS; SYSCALL\n");  in main()
219 			      "mov %[ss], %%ss; syscall\n\t"  in main()
221 			      : "+a" (nr) : [ss] "m" (ss)  in main()
230 	printf("[RUN]\tMOV SS; breakpointed NOP\n");  in main()
231 	asm volatile ("mov %[ss], %%ss; breakpoint_insn: nop" :: [ss] "m" (ss));  in main()
238 		printf("[RUN]\tMOV SS; SYSENTER\n");  in main()
249 		asm volatile ("xorl %%ebp, %%ebp; mov %[ss], %%ss; SYSENTER" : "+a" (nr)  in main()
250 			      : [ss] "m" (ss) : "flags", "rcx"  in main()
260 		printf("[RUN]\tMOV SS; INT $0x80\n");  in main()
263 		asm volatile ("mov %[ss], %%ss; int $0x80"  in main()
264 			      : "+a" (nr) : [ss] "m" (ss)  in main()