t-head/thead-kernel
1
0
Fork 0
mirror of https://github.com/revyos/thead-kernel.git synced 2026-06-21 09:12:26 +02:00
Code Issues Packages Projects Releases Wiki Activity

feat: riscv: vector: No need T-head toolchain to build kernel with CONFIG_VECTOR

Browse Source 
from:
bced4a86e6

Signed-off-by: Han Gao <gaohan@iscas.ac.cn>
This commit is contained in:
Han Gao
2023-06-24 20:09:38 +08:00
committed by Han Gao
parent 0a18500133
commit 7feb2daff6
1 changed files with 11 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
arch/riscv/kernel/vector.S
View File

@@ -38,14 +38,14 @@ ENTRY(__vstate_save)
csrr t0, CSR_VTYPE
sd t0, TASK_THREAD_VTYPE_V0(a0)
vsetvli t0, x0, e8,m8
vsb.v v0, (a0)
.word 0x003072d7 /* vsetvli t0, x0, e8,m8 */
.word 0x02050027 /* vsb.v v0, (a0) */
addi a0, a0, RISCV_VECTOR_VLENB*8
vsb.v v8, (a0)
.word 0x02050427 /* vsb.v v8, (a0) */
addi a0, a0, RISCV_VECTOR_VLENB*8
vsb.v v16, (a0)
.word 0x02050827 /* vsb.v v16, (a0) */
addi a0, a0, RISCV_VECTOR_VLENB*8
vsb.v v24, (a0)
.word 0x02050c27 /* vsb.v v24, (a0) */
csrc sstatus, t1
ret
@@ -59,14 +59,14 @@ ENTRY(__vstate_restore)
li t1, (SR_VS | SR_FS)
csrs sstatus, t1
vsetvli t0, x0, e8,m8
vlb.v v0, (a0)
.word 0x003072d7 /* vsetvli t0, x0, e8,m8 */
.word 0x12050007 /* vlb.v v0, (a0) */
addi a0, a0, RISCV_VECTOR_VLENB*8
vlb.v v8, (a0)
.word 0x12050407 /* vlb.v v8, (a0) */
addi a0, a0, RISCV_VECTOR_VLENB*8
vlb.v v16, (a0)
.word 0x12050807 /* vlb.v v16, (a0) */
addi a0, a0, RISCV_VECTOR_VLENB*8
vlb.v v24, (a0)
.word 0x12050c07 /* vlb.v v24, (a0) */
mv a0, t2
ld t0, TASK_THREAD_VSTART_V0(a0)
@@ -78,7 +78,7 @@ ENTRY(__vstate_restore)
ld t0, TASK_THREAD_VL_V0(a0)
ld t2, TASK_THREAD_VTYPE_V0(a0)
vsetvl t3, t0, t2
.word 0x8072fe57 /* vsetvl t3, t0, t2 */
csrc sstatus, t1
ret