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| author |  Vincent Chen <vincentc@andestech.com>
| 2018-11-22 11:14:34 +0800 |
|---|---|---|
| committer |  Greentime Hu <greentime@andestech.com>
| 2018-11-22 18:13:13 +0800 |
| commit | e46bf83c1864a20f9dd17d597ec9be18ed05add8 (patch) | |
| tree | b790f6d6935256140cb8e02d9a5dffd64ad74d14 /arch/nds32/kernel/ex-scall.S | |
| parent | nds32: Remove duplicated include from pm.c (diff) | |
| download | linux-e46bf83c1864a20f9dd17d597ec9be18ed05add8.tar.gz linux-e46bf83c1864a20f9dd17d597ec9be18ed05add8.tar.bz2 linux-e46bf83c1864a20f9dd17d597ec9be18ed05add8.zip | |
nds32: nds32 FPU port
This patch set contains basic components for supporting the nds32 FPU,
such as exception handlers and context switch for FPU registers. By
default, the lazy FPU scheme is supported and the user can configure it via
CONFIG_LZAY_FPU.
Signed-off-by: Vincent Chen <vincentc@andestech.com>
Acked-by: Greentime Hu <greentime@andestech.com>
Signed-off-by: Greentime Hu <greentime@andestech.com>
Diffstat (limited to 'arch/nds32/kernel/ex-scall.S')
| -rw-r--r-- | arch/nds32/kernel/ex-scall.S | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/nds32/kernel/ex-scall.S b/arch/nds32/kernel/ex-scall.S index 36aa87ecdabd..270050f1b7b1 100644 --- a/arch/nds32/kernel/ex-scall.S +++ b/arch/nds32/kernel/ex-scall.S @@ -19,11 +19,13 @@ ENTRY(__switch_to) la $p0, __entry_task sw $r1, [$p0] - move $p1, $r0 - addi $p1, $p1, #THREAD_CPU_CONTEXT + addi $p1, $r0, #THREAD_CPU_CONTEXT smw.bi $r6, [$p1], $r14, #0xb ! push r6~r14, fp, lp, sp move $r25, $r1 - addi $r1, $r1, #THREAD_CPU_CONTEXT +#if defined(CONFIG_FPU) + call _switch_fpu +#endif + addi $r1, $r25, #THREAD_CPU_CONTEXT lmw.bi $r6, [$r1], $r14, #0xb ! pop r6~r14, fp, lp, sp ret |