Differential D13947 Diff 38134 head/sys/powerpc/powerpc/swtch64.S

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Show First 20 Lines • Show All 154 Lines • ▼ Show 20 Lines	blocked_loop:
ld %r7,TD_LOCK(%r13)		ld %r7,TD_LOCK(%r13)
cmpd %r6,%r7		cmpd %r6,%r7
beq- blocked_loop		beq- blocked_loop
isync		isync
#endif		#endif

ld %r17,TD_PCB(%r13) /* Get new PCB */		ld %r17,TD_PCB(%r13) /* Get new PCB */
ld %r1,PCB_SP(%r17) /* Load the stack pointer */		ld %r1,PCB_SP(%r17) /* Load the stack pointer */
		addi %r1,%r1,-48 /* Remember about cpu_switch stack frame */

/* Release old thread now that we have a stack pointer set up */		/* Release old thread now that we have a stack pointer set up */
cmpdi %r14,0		cmpdi %r14,0
beq- 1f		beq- 1f
std %r16,TD_LOCK(%r14) /* ULE: update old thread's lock */		std %r16,TD_LOCK(%r14) /* ULE: update old thread's lock */

1: mfsprg %r7,0 /* Get the pcpu pointer */		1: mfsprg %r7,0 /* Get the pcpu pointer */
std %r13,PC_CURTHREAD(%r7) /* Store new current thread */		std %r13,PC_CURTHREAD(%r7) /* Store new current thread */
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