tree c580c737ced0f41a358200d27b05219fc39ec4b2
parent a8ae21c88efea1d5bed7f581a1bbd1d65199a720
author Ths.quiniou <52278257+sauleThsQuin@users.noreply.github.com> 1759756031 +0200
committer GitHub <noreply@github.com> 1759756031 +0530
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fix[RL78 Port] incorrect register image for pvParameters in FAR model (#1316) (#1317)

In the RL78 FAR data model, pxPortInitialiseStack() did not initialize
the register image for the task parameter (pvParameters) correctly.
A:DE registers were saved with dummy values instead of the actual pointer.

Effect: on first context restore the function prologue read a corrupted
parameter. NEAR builds were not affected.

This patch aligns the FAR path with the calling convention and compiler
version:
 - IAR V2: pass pvParameters via registers → DE = low 16 bits, A = high 8
 - IAR V1 (fallback): keep legacy stack write
Also keeps the original stack-frame layout and updates the comment to
reflect that pointer sizes depend on __DATA_MODEL__.

Result: tasks in FAR receive the correct parameter at entry; NEAR remains
unchanged.

Co-authored-by: Thomas Quiniou <tquiniou@fdi-access.com>