contrib/octeon-sdk/cvmx-spinlock.h

136     unsigned int tmp;
140     "1: ll   %[tmp], %[val] \n"
141     "   bnez %[tmp], 2f     \n"  // if lock held, fail immediately
142     "   li   %[tmp], 1      \n"
143     "   sc   %[tmp], %[val] \n"
144     "   beqz %[tmp], 1b     \n"
145     "   li   %[tmp], 0      \n"
148     : [val] "+m" (lock->value), [tmp] "=&r" (tmp)
152     return (!!tmp);  /* normalize to 0 or 1 */
162     unsigned int tmp;
166     "1: ll   %[tmp], %[val]  \n"
167     "   bnez %[tmp], 1b     \n"
168     "   li   %[tmp], 1      \n"
169     "   sc   %[tmp], %[val] \n"
170     "   beqz %[tmp], 1b     \n"
173     : [val] "+m" (lock->value), [tmp] "=&r" (tmp)
199     unsigned int tmp;
205     "1: ll    %[tmp], %[val]  \n"
206     "   bbit1 %[tmp], 31, 1b    \n"
208     "   ins   %[tmp], $at, 31, 1  \n"
209     "   sc    %[tmp], %[val] \n"
210     "   beqz  %[tmp], 1b     \n"
214     : [val] "+m" (*word), [tmp] "=&r" (tmp), [sav] "=&r" (sav)
233     unsigned int tmp;
238     "1: ll    %[tmp], %[val] \n"
239     "   bbit1 %[tmp], 31, 2f     \n"  // if lock held, fail immediately
241     "   ins   %[tmp], $at, 31, 1  \n"
242     "   sc    %[tmp], %[val] \n"
243     "   beqz  %[tmp], 1b     \n"
244     "   li    %[tmp], 0      \n"
248     : [val] "+m" (*word), [tmp] "=&r" (tmp)
252     return (!!tmp);  /* normalize to 0 or 1 */
336 		"     addi  %[tmp], %[pid], 0x80 \n"
337 		"     sw    %[tmp], %[lid]       # set lid to invalid value\n"
339 		"1:   ll    %[tmp], %[val]       \n"
340 		"     addu  %[res], %[tmp], -1   # decrement lock count\n"
344 		"     beq   %[tmp], %[res], 2f   # res is 1 on successful sc       \n"
350 		: [res] "=&r" (result), [tmp] "=&r" (temp), [val] "+m" (lock->value), [lid] "+m" (lock->core_num)
390 	volatile unsigned int tmp;
398 		"1: ll   %[tmp], %[val]       # load the count\n"
399 		"   bnez %[tmp], 2f           # if count!=zero branch to 2\n"
400 		"   addu %[tmp], %[tmp], 1    \n"
401 		"   sc   %[tmp], %[val]       \n"
402 		"   beqz %[tmp], 1b           # go back if not success\n"
405 		"2: lw   %[tmp], %[lid]       # load the core_num \n"
406 		"   bne  %[tmp], %[pid], 1b   # core_num no match, restart\n"
408 		"   lw   %[tmp], %[val]       \n"
409 		"   addu %[tmp], %[tmp], 1    \n"
410 		"   sw   %[tmp], %[val]       # update the count\n"
414 		: [tmp] "=&r" (tmp), [val] "+m" (lock->value), [lid] "+m" (lock->core_num)