From a78fb68f718383ba7eea410340be66e94cd3540d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andreas=20Bie=C3=9Fmann?= Date: Wed, 1 Dec 2010 00:58:33 +0100 Subject: arm: copy_loop(): use scratch register MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch uses r1 as scratch register for copy_loop(). Therefore we do not longer need r7 for the storage of relocate_code()'s 'addr_moni' (the destination address of relocation). Therefore r7 can be used later on for other purposes. Signed-off-by: Andreas Bießmann --- arch/arm/cpu/arm946es/start.S | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'arch/arm/cpu/arm946es') diff --git a/arch/arm/cpu/arm946es/start.S b/arch/arm/cpu/arm946es/start.S index 80fee3107..e3a84a136 100644 --- a/arch/arm/cpu/arm946es/start.S +++ b/arch/arm/cpu/arm946es/start.S @@ -164,13 +164,13 @@ relocate_code: mov r4, r0 /* save addr_sp */ mov r5, r1 /* save addr of gd */ mov r6, r2 /* save addr of destination */ - mov r7, r2 /* save addr of destination */ /* Set up the stack */ stack_setup: mov sp, r4 adr r0, _start + 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 */ @@ -179,7 +179,7 @@ stack_setup: copy_loop: ldmia r0!, {r9-r10} /* copy from source address [r0] */ - stmia r6!, {r9-r10} /* copy to target address [r1] */ + stmia r1!, {r9-r10} /* copy to target address [r1] */ cmp r0, r2 /* until source end address [r2] */ blo copy_loop @@ -188,7 +188,7 @@ copy_loop: * fix .rel.dyn relocations */ ldr r0, _TEXT_BASE /* r0 <- Text base */ - sub r9, r7, r0 /* r9 <- relocation offset */ + sub r9, r6, r0 /* r9 <- relocation offset */ ldr r10, _dynsym_start_ofs /* r10 <- sym table ofs */ add r10, r10, r0 /* r10 <- sym table in FLASH */ ldr r2, _rel_dyn_start_ofs /* r2 <- rel dyn start ofs */ @@ -229,7 +229,7 @@ clear_bss: ldr r0, _bss_start_ofs ldr r1, _bss_end_ofs ldr r3, _TEXT_BASE /* Text base */ - mov r4, r7 /* reloc addr */ + mov r4, r6 /* reloc addr */ add r0, r0, r4 add r1, r1, r4 mov r2, #0x00000000 /* clear */ @@ -255,7 +255,7 @@ _nand_boot: .word nand_boot add lr, lr, r9 /* setup parameters for board_init_r */ mov r0, r5 /* gd_t */ - mov r1, r7 /* dest_addr */ + mov r1, r6 /* dest_addr */ /* jump to it ... */ mov pc, lr -- cgit v1.2.3