Date: Sun, 25 Aug 2013 11:23:38 +0000 (UTC) From: Andrew Turner <andrew@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r254847 - head/sys/arm/arm Message-ID: <201308251123.r7PBNdnj034380@svn.freebsd.org>
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Author: andrew Date: Sun Aug 25 11:23:38 2013 New Revision: 254847 URL: http://svnweb.freebsd.org/changeset/base/254847 Log: Add the frame information to cpu_switch to allow us to unwind out of it, for example when dumping threads in the kernel debugger. Modified: head/sys/arm/arm/swtch.S Modified: head/sys/arm/arm/swtch.S ============================================================================== --- head/sys/arm/arm/swtch.S Sun Aug 25 11:21:10 2013 (r254846) +++ head/sys/arm/arm/swtch.S Sun Aug 25 11:23:38 2013 (r254847) @@ -218,6 +218,11 @@ END(cpu_throw) ENTRY(cpu_switch) stmfd sp!, {r4-r7, lr} sub sp, sp, #4; +#ifdef __ARM_EABI__ + .save {r4-r7, lr} + .pad #4 +#endif + mov r6, r2 /* Save the mutex */ .Lswitch_resume:
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