diff options
| author | Yatharth Kochar <yatharth.kochar@arm.com> | 2016-09-28 11:00:05 +0100 |
|---|---|---|
| committer | Yatharth Kochar <yatharth.kochar@arm.com> | 2016-09-28 14:03:47 +0100 |
| commit | 9c1dceb106474966211a3782f8e89e195b4c079c (patch) | |
| tree | fdac31949604c93e82fd9a535c07bce5baa9a826 /include | |
| parent | bfd925139fdbc2e87979849907b34843aa326994 (diff) | |
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
Diffstat (limited to 'include')
| -rw-r--r-- | include/common/aarch32/el3_common_macros.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/common/aarch32/el3_common_macros.S b/include/common/aarch32/el3_common_macros.S index a572ef99..50ce952f 100644 --- a/include/common/aarch32/el3_common_macros.S +++ b/include/common/aarch32/el3_common_macros.S @@ -261,7 +261,7 @@ ldr r0, =__DATA_RAM_START__ ldr r1, =__DATA_ROM_START__ ldr r2, =__DATA_SIZE__ - bl memcpy + bl memcpy4 #endif .endif /* _init_c_runtime */ |