Date: Mon, 22 Mar 2010 02:01:34 +0000 (UTC) From: Marcel Moolenaar <marcel@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r205431 - head/sys/ia64/include Message-ID: <201003220201.o2M21YVZ080700@svn.freebsd.org>
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Author: marcel Date: Mon Mar 22 02:01:33 2010 New Revision: 205431 URL: http://svn.freebsd.org/changeset/base/205431 Log: Define curthread as an inline function that loads the thread pointer directly from r13, the pcpu pointer. This guarantees correct behaviour when the thread migrates to a different CPU. Modified: head/sys/ia64/include/pcpu.h Modified: head/sys/ia64/include/pcpu.h ============================================================================== --- head/sys/ia64/include/pcpu.h Mon Mar 22 00:11:31 2010 (r205430) +++ head/sys/ia64/include/pcpu.h Mon Mar 22 02:01:33 2010 (r205431) @@ -70,6 +70,16 @@ struct pcpu; register struct pcpu *pcpup __asm__("r13"); +static __inline struct thread * +__curthread(void) +{ + struct thread *td; + + __asm __volatile("ld8.acq %0=[r13]" : "=r"(td)); + return (td); +} +#define curthread (__curthread()) + #define PCPU_GET(member) (pcpup->pc_ ## member) /*
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