Flash Ram Sim no malloc support. Integer sign fixes

[AlexLanzano]

Flash RAM Sim changes

Currently whFlashRamsim_Init uses malloc to allocate the simulated NVM space in RAM. This may be cumbersome for environments where dynamic memory allocation is not implemented or unavailable. This PR implements the following to address this:

• Removes any malloc/free dependencies within the library (a few lingers in test/benchmark)
• Adds memory field to whFlashRamsimCfg struct to allow the user to specify a memory
• Addresses Add ability to specify static memory location and size in whFlashRamsim_Init #139

Integer sign fixes

There were multiple instances uint32_t variable, return value, and/or field that gets set to an error code which are negative values. The TI arm compiler throws an error for this that can't be turned off or ignored. In this PR I changed these occurrences to use a signed integer instead.

[bigbrett]

Nice!

[billphipps]

Excellent catch on the signed values. I found some other messages that had errors in them too, but I'll fix those seperately.

Consider eliminating malloc() within this library by updating the test/examples/tools to malloc instead.

Just need a few parameter validations and I think we are probably good!

[billphipps]

Couple of lingering free()'s. Looks great!

Please pull before you do a final push to resolve the conflict in test_cert.

[Copilot]

Pull Request Overview

This PR removes malloc dependencies from the Flash RAM Simulator library and fixes integer sign mismatches for error codes. The changes enable usage in environments without dynamic memory allocation and address TI ARM compiler warnings about assigning negative error codes to unsigned integers.

• Adds a memory field to whFlashRamsimCfg to allow user-provided memory allocation instead of malloc
• Changes uint32_t return code fields to int32_t in SHE message structures to properly handle negative error values
• Updates the nfObject_Offset function to return error codes properly instead of mixing offsets with error values

Reviewed Changes

Copilot reviewed 15 out of 15 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
wolfhsm/wh_flash_ramsim.h	Adds memory field to configuration structure
wolfhsm/wh_message_she.h	Changes return code fields from uint32_t to int32_t
src/wh_flash_ramsim.c	Removes malloc dependency and uses user-provided memory
src/wh_nvm_flash.c	Fixes nfObject_Offset to return errors via output parameter
test/*.c	Updates test files to provide static memory buffers
examples/*.c	Updates examples to provide static memory buffers
benchmark/*.c	Updates benchmark to provide static memory buffer

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[billphipps]

Looks great! Thanks!

Changes have been implemented.