From 32f0d3c6c3fb1fb9353ec0b82ddb099281b9328c Mon Sep 17 00:00:00 2001 From: Douglas Raillard Date: Thu, 26 Jan 2017 15:54:44 +0000 Subject: Replace some memset call by zeromem Replace all use of memset by zeromem when zeroing moderately-sized structure by applying the following transformation: memset(x, 0, sizeof(x)) => zeromem(x, sizeof(x)) As the Trusted Firmware is compiled with -ffreestanding, it forbids the compiler from using __builtin_memset and forces it to generate calls to the slow memset implementation. Zeromem is a near drop in replacement for this use case, with a more efficient implementation on both AArch32 and AArch64. Change-Id: Ia7f3a90e888b96d056881be09f0b4d65b41aa79e Signed-off-by: Douglas Raillard --- plat/qemu/qemu_bl2_setup.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'plat/qemu/qemu_bl2_setup.c') diff --git a/plat/qemu/qemu_bl2_setup.c b/plat/qemu/qemu_bl2_setup.c index dba3beeb..738d671a 100644 --- a/plat/qemu/qemu_bl2_setup.c +++ b/plat/qemu/qemu_bl2_setup.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2015-2016, ARM Limited and Contributors. All rights reserved. + * Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: @@ -35,7 +35,7 @@ #include #include "qemu_private.h" #include - +#include /* * The next 2 constants identify the extents of the code & RO data region. @@ -91,7 +91,7 @@ bl31_params_t *bl2_plat_get_bl31_params(void) * Initialise the memory for all the arguments that needs to * be passed to BL3-1 */ - memset(&bl31_params_mem, 0, sizeof(bl2_to_bl31_params_mem_t)); + zeromem(&bl31_params_mem, sizeof(bl2_to_bl31_params_mem_t)); /* Assign memory for TF related information */ bl2_to_bl31_params = &bl31_params_mem.bl31_params; -- cgit v1.2.3