diff options
| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2017-01-27 16:15:29 +0900 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2017-02-08 09:17:30 -0500 |
| commit | b913c3f0790a4785b2cf0afa49d4c3e4ffddc2cd (patch) | |
| tree | c2f7f3bfc24254304170029e175062fde3ec2cf5 | |
| parent | 446d4e048ee3b00f7907e15cd02aa404cc714c77 (diff) | |
arm64: use xzr to zero-out the bss section
AArch64 has a zero register (xzr). Use it instead of x2.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
| -rw-r--r-- | arch/arm/lib/crt0_64.S | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/arm/lib/crt0_64.S b/arch/arm/lib/crt0_64.S index 91b19e00da..f8e84b2fc8 100644 --- a/arch/arm/lib/crt0_64.S +++ b/arch/arm/lib/crt0_64.S @@ -117,9 +117,8 @@ relocation_return: */ ldr x0, =__bss_start /* this is auto-relocated! */ ldr x1, =__bss_end /* this is auto-relocated! */ - mov x2, #0 clear_loop: - str x2, [x0] + str xzr, [x0] add x0, x0, #8 cmp x0, x1 b.lo clear_loop |