commit 2d8a1824071275770218116e041355c8243c1405
author Gilles Peskine <Gilles.Peskine@arm.com> Mon Nov 08 22:20:03 2021 +0100
committer Gilles Peskine <Gilles.Peskine@arm.com> Fri Nov 26 12:46:28 2021 +0100
tree f5dfc49a4601a71e4e8a08c8b33966f27242eee3
parent e3d9c9d99bbb7536b75557ed190c2e18d30d9471

PSA global data: move fields around to save code size

Move fields around to have fewer accesses outside the 128-element Thumb
direct access window.

Make the same change as in 2.27+, for the same small benefit.

Results (arm-none-eabi-gcc 7.3.1, build_arm_none_eabi_gcc_m0plus build):
library/psa_crypto.o: 16434 -> 16414 (diff: 20)

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>

library/psa_crypto.c

diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index 0a04ba1..c74cb3c 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -103,9 +103,9 @@
 
 typedef struct
 {
-    mbedtls_psa_random_context_t rng;
     unsigned initialized : 1;
     unsigned rng_state : 2;
+    mbedtls_psa_random_context_t rng;
 } psa_global_data_t;
 
 static psa_global_data_t global_data;