tree fdac31949604c93e82fd9a535c07bce5baa9a826
parent dc4d3d6feddf4ca15bd7160aa1b4375bfa662605
author Yatharth Kochar <yatharth.kochar@arm.com> 1475056805 +0100
committer Yatharth Kochar <yatharth.kochar@arm.com> 1475067827 +0100

AArch32: Add `memcpy4` function in assembly

At present the `el3_entrypoint_common` macro uses `memcpy`
function defined in lib/stdlib/mem.c file, to copy data
from ROM to RAM for BL1. Depending on the compiler being
used the stack could potentially be used, in `memcpy`,
for storing the local variables. Since the stack is
initialized much later in `el3_entrypoint_common` it
may result in unknown behaviour.

This patch adds `memcpy4` function definition in assembly so
that it can be used before the stack is initialized and it
also replaces `memcpy` by `memcpy4` in `el3_entrypoint_common`
macro, to copy data from ROM to RAM for BL1.

Change-Id: I3357a0e8095f05f71bbbf0b185585d9499bfd5e0