From a1a47d3c57e3bc3c49bc1eca94c00eba4880d2c3 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andreas=20Bie=C3=9Fmann?= Date: Wed, 1 Dec 2010 00:58:34 +0100 Subject: arm: relocate_code(): do not set register useless MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In case we are still at relocation target address before relocation we do not need to load the registers needed for relocation. We should instead skip the whole relocation part and jump over to clear_bss immediately. Signed-off-by: Andreas Bießmann --- arch/arm/cpu/arm926ejs/start.S | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch/arm/cpu/arm926ejs/start.S') diff --git a/arch/arm/cpu/arm926ejs/start.S b/arch/arm/cpu/arm926ejs/start.S index d3f5630..32001e8 100644 --- a/arch/arm/cpu/arm926ejs/start.S +++ b/arch/arm/cpu/arm926ejs/start.S @@ -198,12 +198,12 @@ stack_setup: mov sp, r4 adr r0, _start + cmp r0, r6 + beq clear_bss /* skip relocation */ mov r1, r6 /* r1 <- scratch for copy loop */ ldr r2, _TEXT_BASE ldr r3, _bss_start_ofs add r2, r0, r3 /* r2 <- source end address */ - cmp r0, r6 - beq clear_bss copy_loop: ldmia r0!, {r9-r10} /* copy from source address [r0] */ -- cgit v1.1