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target-ppc: retain l{w,d}arx loaded value

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We do this so we can check on the corresponding stc{w,d}x. whether the
value has changed.  It's a poor man's form of implementing atomic
operations and is valid only for NPTL usermode Linux emulation.

Signed-off-by: Nathan Froyd <froydnj@codesourcery.com>
Signed-off-by: malc <av1474@comtv.ru>
This commit is contained in:
Nathan Froyd 2009-08-03 08:43:25 -07:00 • committed by malc
parent 174c80d516
commit 18b21a2f83
5 changed files with 17 additions and 10 deletions
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2
target-ppc/helper.c
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@ -2805,7 +2805,7 @@ void cpu_ppc_reset (void *opaque)
env->msr |= (1ULL << MSR_SF);
#endif
hreg_compute_hflags(env);
env->reserve = (target_ulong)-1ULL;
env->reserve_addr = (target_ulong)-1ULL;
/* Be sure no exception or interrupt is pending */
env->pending_interrupts = 0;
env->exception_index = POWERPC_EXCP_NONE;