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MIPS: Don't compile math-emu when CONFIG_MIPS_FP_SUPPORT=n
When CONFIG_MIPS_FP_SUPPORT=n we don't support floating point, so
there's no point compiling in our FPU emulator. Avoid doing so,
providing stub versions of dsemul cleanup functions that are called from
signal & task handling code.
Signed-off-by: Paul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/21012/
Cc: linux-mips@linux-mips.org
+29
-2
+1
-1
arch/mips/Makefile
+1
-1
arch/mips/Makefile
+28
-1
arch/mips/include/asm/dsemul.h
+28
-1
arch/mips/include/asm/dsemul.h
···
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*
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* Return: True if an emulation frame was returned from, else false.
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*/
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#ifdef CONFIG_MIPS_FP_SUPPORT
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extern bool do_dsemulret(struct pt_regs *xcp);
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#else
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static inline bool do_dsemulret(struct pt_regs *xcp)
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{
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return false;
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}
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#endif
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/**
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* dsemul_thread_cleanup() - Cleanup thread 'emulation' frame
···
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*
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* Return: True if a frame was freed, else false.
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*/
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#ifdef CONFIG_MIPS_FP_SUPPORT
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extern bool dsemul_thread_cleanup(struct task_struct *tsk);
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-
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#else
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static inline bool dsemul_thread_cleanup(struct task_struct *tsk)
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{
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return false;
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}
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#endif
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/**
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* dsemul_thread_rollback() - Rollback from an 'emulation' frame
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* @regs: User thread register context.
···
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*
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* Return: True if a frame was exited, else false.
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*/
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#ifdef CONFIG_MIPS_FP_SUPPORT
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extern bool dsemul_thread_rollback(struct pt_regs *regs);
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#else
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static inline bool dsemul_thread_rollback(struct pt_regs *regs)
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{
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return false;
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}
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#endif
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/**
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* dsemul_mm_cleanup() - Cleanup per-mm delay slot 'emulation' state
···
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* for delay slot 'emulation' book-keeping is freed. This is to be called
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* before @mm is freed in order to avoid memory leaks.
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*/
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#ifdef CONFIG_MIPS_FP_SUPPORT
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extern void dsemul_mm_cleanup(struct mm_struct *mm);
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#else
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static inline void dsemul_mm_cleanup(struct mm_struct *mm)
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{
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/* no-op */
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}
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#endif
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#endif /* __MIPS_ASM_DSEMUL_H__ */