MbedTLS tests fails to cross compile for arm cortex m33

[maulik-arm]

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Description

• Type: Bug
• Priority: Minor

---

Bug

OS
Host : Linux

mbed TLS build:
Version: 2.26.0
OS version: 18.04
Configuration: please attach config.h file where possible
Added ns_mbedtls_config.h file which is passed for default configuration.
ns_mbedtls_config.h.gz

Compiler and options (if you used a pre-built binary, please indicate how you obtained it): arm-none-eabi-gcc (GNU Arm Embedded Toolchain 9-2020-q2-update) 9.3.1 20200408 (release)
Additional environment information:
Cross-compiling for arm mps2 an521

Expected behavior
While trying to cross-compile mbedtls for embedded mps2 an521 target on host Linux Ubuntu 18.04 machine, all test suites should compile at least.

Actual behavior
Compile error as mentioned below:
[ 44%] Building C object app/mbedtls226/tests/CMakeFiles/test_suite_ssl.dir/test_suite_ssl.o
arm-none-eabi-gcc -D_POSIX_C_SOURCE=200809L -I/mbedtls226/tests/include -I/mbedtls226/tests/../library -I/mbedtls226/include -mcpu=cortex-m33+nodsp -Wall -Wextra -Wwrite-strings -Wformat=2 -Wno-format-nonliteral -Wvla -Wlogical-op -Wshadow -Wformat-overflow=2 -Wformat-truncation=2 -Wno-unused-function -O2 --specs=nano.specs -Wall -Wno-format -Wno-return-type -Wno-unused-but-set-variable -c -fdata-sections -ffunction-sections -fno-builtin -fshort-enums -funsigned-char -mthumb -nostdlib -std=c99 -msoft-float -o CMakeFiles/test_suite_ssl.dir/test_suite_ssl.o -c /home/maupat01/workspace/ns-tls/3931/tf-m/build/app/mbedtls226/tests/test_suite_ssl.c
suites/host_test.function: In function 'convert_params':
suites/host_test.function:299:43: warning: passing argument 2 of 'get_expression' from incompatible pointer type [-Wincompatible-pointer-types]
299 | if ( get_expression ( exp_id, int_params_store ) == 0 )
| ^~~~~~~~~~~~~~~~
| |
| int *
suites/main_test.function:80:47: note: expected 'int32_t *' {aka 'long int *'} but argument is of type 'int *'
80 | int get_expression( int32_t exp_id, int32_t * out_value )

[gilles-peskine-arm]

I've made a PR for a fix, which should get you further: after this, I expect a link failure. How to resolve the link failure depends on the platform you're building for. The test suites need several standard library functions, they don't run on bare metal.

[ronald-cron-arm]

@maulik-arm Please confirm that #4532 fixes this issue.

[maulik-arm]

Hi @gilles-peskine-arm , @ronald-cron-arm ,sorry for delayed reply. Yes, I confirm the patch does fixes the compiler warning. Thank you

[ronald-cron-arm]

@maulik-arm thanks for the confirmation. Good to go then.