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| author | Andreas Bießmann <andreas.devel@googlemail.com> | 2010-12-01 00:58:33 +0100 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2010-12-09 11:01:14 +0100 |
| commit | a78fb68f718383ba7eea410340be66e94cd3540d (patch) | |
| tree | a5e41668b607603d00aeed96d07b718cc308db3e /arch/arm/cpu/arm720t/start.S | |
| parent | bb141079d34bebb073c5b0566313e1441973ec01 (diff) | |
| download | olio-uboot-2014.01-a78fb68f718383ba7eea410340be66e94cd3540d.tar.xz olio-uboot-2014.01-a78fb68f718383ba7eea410340be66e94cd3540d.zip | |
arm: copy_loop(): use scratch register
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 <andreas.devel@googlemail.com>
Diffstat (limited to 'arch/arm/cpu/arm720t/start.S')
| -rw-r--r-- | arch/arm/cpu/arm720t/start.S | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/arm/cpu/arm720t/start.S b/arch/arm/cpu/arm720t/start.S index da0e61e6d..e3d81597d 100644 --- a/arch/arm/cpu/arm720t/start.S +++ b/arch/arm/cpu/arm720t/start.S @@ -156,13 +156,13 @@ 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 */ @@ -171,7 +171,7 @@ 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 @@ -180,7 +180,7 @@ 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 */ @@ -221,7 +221,7 @@ 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 */ @@ -245,7 +245,7 @@ clbss_l:str r2, [r0] /* clear loop... */ 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 |