RT-Thread
/
rt-thread
mirror of https://github.com/RT-Thread/rt-thread
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

libcpu: riscv: fixed ARCH_RISCV_VECTOR issue 

description: Using the vector instruction set to trigger
an illegal instruction exception when ARCH_SISCV_VECTOR=y.

analysis: When initializing the thread stack,
the rt_cw_stack_init function did not enable VS for SSTATUS.

Solution: When ARCH_SISCV_VECTOR=y,
increment the initial value of sstatus by 0x600(SSTATUS_VS).

Signed-off-by: Liu Gui <kenneth.liu@sophgo.com>
This commit is contained in:
kenneth.liu 2025-01-24 11:35:19 +08:00 committed by Meco Man
parent b3225ec81a
commit 2be83d5cad
1 changed files with 8 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
libcpu/risc-v/common64/cpuport.c
View File

@ -19,9 +19,15 @@
#include <encoding.h>
#ifdef ARCH_RISCV_FPU
#define K_SSTATUS_DEFAULT (SSTATUS_SPP | SSTATUS_SPIE | SSTATUS_SUM | SSTATUS_FS)
#define K_SSTATUS_DEFAULT_BASE (SSTATUS_SPP | SSTATUS_SPIE | SSTATUS_SUM | SSTATUS_FS)
#else
#define K_SSTATUS_DEFAULT (SSTATUS_SPP | SSTATUS_SPIE | SSTATUS_SUM)
#define K_SSTATUS_DEFAULT_BASE (SSTATUS_SPP | SSTATUS_SPIE | SSTATUS_SUM)
#endif
#ifdef ARCH_RISCV_VECTOR
#define K_SSTATUS_DEFAULT (K_SSTATUS_DEFAULT_BASE | SSTATUS_VS)
#else
#define K_SSTATUS_DEFAULT K_SSTATUS_DEFAULT_BASE
#endif
#ifdef RT_USING_SMART
#include <lwp_arch.h>