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| author | Alan Kao <alankao@andestech.com> | 2018-10-09 10:18:33 +0800 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@sifive.com> | 2018-10-22 17:02:23 -0700 |
| commit | 9671f7061433e2c58b9894093eada1898595b85d (patch) | |
| tree | 29630911728d35d4aac5b6dd08c2b96947a70d01 /arch/riscv/kernel/signal.c | |
| parent | e8be5302330281bd9f77834600f63e8cc4560d3d (diff) | |
Allow to disable FPU support
FPU codes have been separated from common part in previous patches.
This patch add the CONFIG_FPU option and some stubs, so that a no-FPU
configuration is allowed.
Signed-off-by: Alan Kao <alankao@andestech.com>
Cc: Greentime Hu <greentime@andestech.com>
Cc: Vincent Chen <vincentc@andestech.com>
Cc: Zong Li <zong@andestech.com>
Cc: Nick Hu <nickhu@andestech.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Diffstat (limited to 'arch/riscv/kernel/signal.c')
| -rw-r--r-- | arch/riscv/kernel/signal.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/riscv/kernel/signal.c b/arch/riscv/kernel/signal.c index 6a18b9819ead..2450b824d799 100644 --- a/arch/riscv/kernel/signal.c +++ b/arch/riscv/kernel/signal.c @@ -37,6 +37,7 @@ struct rt_sigframe { struct ucontext uc; }; +#ifdef CONFIG_FPU static long restore_fp_state(struct pt_regs *regs, union __riscv_fp_state *sc_fpregs) { @@ -85,6 +86,10 @@ static long save_fp_state(struct pt_regs *regs, return err; } +#else +#define save_fp_state(task, regs) (0) +#define restore_fp_state(task, regs) (0) +#endif static long restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc) |