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Linux_SDK_V1.4.2

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Signed-off-by: thead_admin <occ_thead@service.alibaba.com>
This commit is contained in:
thead_admin
2023-12-24 02:32:32 +00:00
committed by Han Gao
parent c20ad6292d
commit a9b3178041
164 changed files with 1942 additions and 24749 deletions
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12
arch/riscv/kernel/fpu.S
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@@ -65,9 +65,19 @@ ENDPROC(__fstate_save)
ENTRY(__fstate_restore)
li a2, TASK_THREAD_F0
add a0, a0, a2
/* Enable FPU */
li t1, SR_FS
lw t0, TASK_THREAD_FCSR_F0(a0)
csrs CSR_STATUS, t1
/* Restore fcsr[0-7] */
frcsr t1
srli t1, t1, 8
slli t1, t1, 8
lbu t0, TASK_THREAD_FCSR_F0(a0)
or t0, t1, t0
/* Restore f0 - f31 */
fld f0, TASK_THREAD_F0_F0(a0)
fld f1, TASK_THREAD_F1_F0(a0)
fld f2, TASK_THREAD_F2_F0(a0)