9  * The issue can be checked on LE machines simply by zeroing load_fp
20  * bit trickier to check it on BE machines because MSR.LE bit is set
24  * from the signal handler (as it happens on LE machines). Thus to test
25  * it on BE machines LE endianness is forced after a first trap and then
49 #define LE     1UL  macro
57 int le;  variable
66 	/* Get thread endianness: extract bit LE from MSR */  in trap_signal_handler()
73 	if (le) {  in trap_signal_handler()
87 			 * endianness was still LE (not flipped inadvertently)  in trap_signal_handler()
91 			 * LE endianness does in effect nothing, instruction (2)  in trap_signal_handler()
100 			 * Either way, it's now possible to check the MSR LE bit  in trap_signal_handler()
114 			if (thread_endianness == LE) {  in trap_signal_handler()
120 				 * inadvertently. Thus we flip back to LE and  in trap_signal_handler()
137 			 * Force thread endianness to be LE. Instructions (1),  in trap_signal_handler()
149 			 * continue to be LE, just as it was set above.  in trap_signal_handler()
157 			 * as LE, generating a third trap event. In that case  in trap_signal_handler()
158 			 * endianness is still LE as set on return from the  in trap_signal_handler()
204 		 * tells how a instruction is executed as a LE instruction; con-  in ping()
205 		 * versely, on a LE machine, it tells how a instruction is  in ping()
216 		" b %l[failure]  ;" /* (5) b [NA]; MSR.LE flipped (bug)    */  in ping()
217 		" b %l[success]  ;" /* (6) b [NA]; MSR.LE did not flip (ok)*/  in ping()
292 	le = (int) *(uint8_t *)&k;  in tm_trap_test()
295 		le ? "Little-Endian" : "Big-Endian",  in tm_trap_test()