Date: Mon, 24 Feb 2014 09:30:51 +0000 (UTC) From: Andrew Turner <andrew@FreeBSD.org> To: src-committers@freebsd.org, svn-src-projects@freebsd.org Subject: svn commit: r262437 - in projects/arm64/sys: arm64/arm64 conf Message-ID: <201402240930.s1O9UpUl032746@svn.freebsd.org>
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Author: andrew Date: Mon Feb 24 09:30:50 2014 New Revision: 262437 URL: http://svnweb.freebsd.org/changeset/base/262437 Log: Zero the bss before entering initarm Modified: projects/arm64/sys/arm64/arm64/locore.S projects/arm64/sys/conf/ldscript.arm64 Modified: projects/arm64/sys/arm64/arm64/locore.S ============================================================================== --- projects/arm64/sys/arm64/arm64/locore.S Mon Feb 24 08:50:06 2014 (r262436) +++ projects/arm64/sys/arm64/arm64/locore.S Mon Feb 24 09:30:50 2014 (r262437) @@ -77,14 +77,28 @@ virtdone: adr x29, initstack mov sp, x29 + /* Zero the BSS */ + ldr x29, .Lbss + ldr x28, .Lend + b 2f +1: + str xzr, [x29], #8 + cmp x29, x28 + b.lo 1b +2: + /* Branch to C code */ bl initarm -1: b 1b +3: b 3b .align 3 .Lvirtdone: .quad virtdone +.Lbss: + .quad __bss_start +.Lend: + .quad _end /* * If we are started in EL2, configure the required hypervisor Modified: projects/arm64/sys/conf/ldscript.arm64 ============================================================================== --- projects/arm64/sys/conf/ldscript.arm64 Mon Feb 24 08:50:06 2014 (r262436) +++ projects/arm64/sys/conf/ldscript.arm64 Mon Feb 24 09:30:50 2014 (r262437) @@ -97,6 +97,7 @@ SECTIONS /* We want the small data sections together, so single-instruction offsets can access them all, and initialized data all before uninitialized, so we can shorten the on-disk segment size. */ + . = ALIGN(8); .sdata : { *(.sdata) } _edata = .; PROVIDE (edata = .); @@ -108,7 +109,7 @@ SECTIONS *(.bss) *(COMMON) } - . = ALIGN(32 / 8); + . = ALIGN(8); _end = . ; PROVIDE (end = .); /* Stabs debugging sections. */
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