Date: Sat, 31 Oct 2009 20:59:13 +0000 (UTC) From: Nathan Whitehorn <nwhitehorn@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r198731 - head/sys/powerpc/aim Message-ID: <200910312059.n9VKxDjG002787@svn.freebsd.org>
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Author: nwhitehorn Date: Sat Oct 31 20:59:13 2009 New Revision: 198731 URL: http://svn.freebsd.org/changeset/base/198731 Log: Unbreak cpu_switch(). The register allocator in my brain is clearly broken. Also, Altivec context switching worked before only by accident, but should work now by design. Modified: head/sys/powerpc/aim/swtch.S Modified: head/sys/powerpc/aim/swtch.S ============================================================================== --- head/sys/powerpc/aim/swtch.S Sat Oct 31 19:22:12 2009 (r198730) +++ head/sys/powerpc/aim/swtch.S Sat Oct 31 20:59:13 2009 (r198731) @@ -99,17 +99,19 @@ ENTRY(cpu_switch) mr %r14,%r3 /* Copy the old thread ptr... */ mr %r15,%r4 /* and the new thread ptr in scratch */ mr %r16,%r5 /* and the new lock */ + mr %r17,%r6 /* and the PCB */ - lwz %r6,PCB_FLAGS(%r5) + lwz %r7,PCB_FLAGS(%r17) /* Save FPU context if needed */ - andi. %r6, %r6, PCB_FPU + andi. %r7, %r7, PCB_FPU beq .L1 bl save_fpu .L1: - lwz %r6,PCB_FLAGS(%r5) + mr %r3,%r14 /* restore old thread ptr */ + lwz %r7,PCB_FLAGS(%r17) /* Save Altivec context if needed */ - andi. %r6, %r6, PCB_VEC + andi. %r7, %r7, PCB_VEC beq .L2 bl save_vec
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