Date: Fri, 16 Dec 2011 23:40:57 +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: r228605 - head/sys/powerpc/aim Message-ID: <201112162340.pBGNevbe032528@svn.freebsd.org>
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Author: nwhitehorn Date: Fri Dec 16 23:40:56 2011 New Revision: 228605 URL: http://svn.freebsd.org/changeset/base/228605 Log: Zero BSS on start, in case the ELF loader that started the kernel did not do this for us. This can happen on some embedded systems. Submitted by: rpaulo Modified: head/sys/powerpc/aim/locore32.S Modified: head/sys/powerpc/aim/locore32.S ============================================================================== --- head/sys/powerpc/aim/locore32.S Fri Dec 16 23:15:11 2011 (r228604) +++ head/sys/powerpc/aim/locore32.S Fri Dec 16 23:40:56 2011 (r228605) @@ -128,6 +128,17 @@ __start: sync isync + /* Zero bss, in case we were started by something unhelpful */ + li 0,0 + lis 8,_edata@ha + addi 8,8,_edata@l + lis 9,_end@ha + addi 9,9,_end@l +2: stw 0,0(8) + addi 8,8,4 + cmplw 8,9 + blt 2b + /* Save the argument pointer and length */ mr 20,6 mr 21,7
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