Hi all,

I uploaded a patch (https://review.trustedfirmware.org/c/trusted-firmware-m/+/4009) to simplify/improve the entry points of secure functions in Library model.

In current Library model implementation, each secure function includes the same inline entry point tfm_core_partition_request(). Actually, only the NS client check is required to be inline. The duplicated entry points cost much code size.

Thus this patch extracts NS client check and make it as a simple inline function tfm_core_is_ns_client(). tfm_core_partition_request() becomes a normal function called by each secure function.

Some quantitative results of code size optimization (about 3KB) are shown below:

Profile Small (ConfigDefaultProfileS) is based on https://review.trustedfirmware.org/q/topic:%22symmetric-attest%22+(status:open%20OR%20status:merged)

ConfigDefault + Armclang 6.10 + Release + AN521

	Code	RO-data	RW-data	ZI-data
Current impl	129778	8994	272	50108
Improved	126294	8994	272	50108

ConfigDefaultProfileS + Armclang 6.10 + Release + AN521

	Code	RO-data	RW-data	ZI-data
Current impl	55886	3274	200	31664
Improved	52930	3274	200	31664

Best regards,

Hu Ziji