len0rd/FreeRTOS-Kernel
1
0
Fork 0
mirror of https://github.com/FreeRTOS/FreeRTOS-Kernel.git synced 2025-08-20 18:18:32 -04:00
Code Issues Projects Releases Packages Wiki Activity

Add IAR RISC-V 32 Embedded Extension Support (#588)

Browse source 
Adds RV32E support to the IAR port. This is done by
reducing our register usage to the first 16 registers
only.

Influenced by changes in https://github.com/FreeRTOS/FreeRTOS-Kernel/pull/543

Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>
Co-authored-by: Gaurav Aggarwal <aggarg@amazon.com>
This commit is contained in:
Kody Stribrny 2022-11-29 14:55:18 -08:00 • committed by GitHub
parent b213ad8b6e
commit 1d59f65007
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
4 changed files with 53 additions and 31 deletions
Download patch file Download diff file Expand all files Collapse all files

6
portable/IAR/RISC-V/portmacro.h
View file

@ -82,7 +82,11 @@ typedef portUBASE_TYPE TickType_t;
/* Architecture specifics. */
#define portSTACK_GROWTH ( -1 )
#define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
#define portBYTE_ALIGNMENT 16
#ifdef __riscv_32e
#define portBYTE_ALIGNMENT 8 /* RV32E uses RISC-V EABI with reduced stack alignment requirements. */
#else
#define portBYTE_ALIGNMENT 16
#endif
/*-----------------------------------------------------------*/
/* Scheduler utilities. */