Date: Wed, 17 Nov 2010 19:28:49 +0000 (UTC) From: Andreas Tobler <andreast@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r215436 - head/sys/boot/powerpc/ofw Message-ID: <201011171928.oAHJSnao001880@svn.freebsd.org>
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Author: andreast Date: Wed Nov 17 19:28:48 2010 New Revision: 215436 URL: http://svn.freebsd.org/changeset/base/215436 Log: Make sure the .bss is cleared at the beginning. The pSeries OF ELF loader does not clear .bss automatically. Approved by: nwhitehorn (mentor) Modified: head/sys/boot/powerpc/ofw/start.c Modified: head/sys/boot/powerpc/ofw/start.c ============================================================================== --- head/sys/boot/powerpc/ofw/start.c Wed Nov 17 19:25:37 2010 (r215435) +++ head/sys/boot/powerpc/ofw/start.c Wed Nov 17 19:28:48 2010 (r215436) @@ -50,7 +50,20 @@ _start: \n\ addi %r1,%r1,stack@l \n\ addi %r1,%r1,16384 \n\ \n\ - b startup \n\ + /* Clear the .bss!!! */ \n\ + li %r0,0 \n\ + lis %r8,_edata@ha \n\ + addi %r8,%r8,_edata@l\n\ + lis %r9,_end@ha \n\ + addi %r9,%r9,_end@l \n\ + \n\ +1: cmpw 0,%r8,%r9 \n\ + bge 2f \n\ + stw %r0,0(%r8) \n\ + addi %r8,%r8,4 \n\ + b 1b \n\ + \n\ +2: b startup \n\ "); void
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