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authorAndrew Thoelke <andrew.thoelke@arm.com>2014-04-28 12:32:02 +0100
committerAndrew Thoelke <andrew.thoelke@arm.com>2014-05-07 11:29:50 +0100
commit7935d0a59d439c993b79814ab414d37e4a90d9a6 (patch)
treeb441893641316f785bf782b24ac8877252eb8afb /include/common
parent2f5dcfef1db42f3b073ae657f8a94925abecd768 (diff)
downloadarm-trusted-firmware-7935d0a59d439c993b79814ab414d37e4a90d9a6.tar.gz
Access system registers directly in assembler
Instead of using the system register helper functions to read or write system registers, assembler coded functions should use MRS/MSR instructions. This results in faster and more compact code. This change replaces all usage of the helper functions with direct register accesses. Change-Id: I791d5f11f257010bb3e6a72c6c5ab8779f1982b3
Diffstat (limited to 'include/common')
-rw-r--r--include/common/asm_macros.S2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/common/asm_macros.S b/include/common/asm_macros.S
index 6cf1a19..a41b729 100644
--- a/include/common/asm_macros.S
+++ b/include/common/asm_macros.S
@@ -58,7 +58,7 @@
.macro smc_check label
- bl read_esr
+ mrs x0, esr_el3
ubfx x0, x0, #ESR_EC_SHIFT, #ESR_EC_LENGTH
cmp x0, #EC_AARCH64_SMC
b.ne $label