Commit cad8c3ab authored by Heiko Carstens's avatar Heiko Carstens
Browse files

s390/fpu: let fpu_vlm() and fpu_vstm() return number of registers 



Let fpu_vlm() and fpu_vstm() macros return the number of registers saved /
loaded. This is helpful to read easy to read code in case there are several
subsequent fpu_vlm() or fpu_vstm() calls:

	__vector128 *vxrs = ....

	vxrs += fpu_vstm(0, 15, vxrs);
	vxrs += fpu_vstm(16, 31, vxrs);

Reviewed-by: default avatarClaudio Imbrenda <imbrenda@linux.ibm.com>
Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
parent bdbd3acb

arch/s390/include/asm/fpu-insn.h

+16 −8
Original line number Diff line number Diff line
@@ -110,7 +110,8 @@ static __always_inline void fpu_stfpc(unsigned int *fpc) 


#ifdef CONFIG_CC_IS_CLANG



#define fpu_vlm(_v1, _v3, _vxrs) do {					\

#define fpu_vlm(_v1, _v3, _vxrs)					\

({									\

	unsigned int size = ((_v3) - (_v1) + 1) * sizeof(__vector128);	\

	struct {							\

		__vector128 _v[(_v3) - (_v1) + 1];			\
@@ -124,11 +125,13 @@ static __always_inline void fpu_stfpc(unsigned int *fpc) 
		: [vxrs] "R" (*_v),					\

		  [v1] "I" (_v1), [v3] "I" (_v3)			\

		: "memory", "1");					\

} while (0)

	(_v3) - (_v1) + 1;						\

})



#else /* CONFIG_CC_IS_CLANG */



#define fpu_vlm(_v1, _v3, _vxrs) do {					\

#define fpu_vlm(_v1, _v3, _vxrs)					\

({									\

	unsigned int size = ((_v3) - (_v1) + 1) * sizeof(__vector128);	\

	struct {							\

		__vector128 _v[(_v3) - (_v1) + 1];			\
@@ -140,13 +143,15 @@ static __always_inline void fpu_stfpc(unsigned int *fpc) 
		     : [vxrs] "Q" (*_v),				\

		       [v1] "I" (_v1), [v3] "I" (_v3)			\

		     : "memory");					\

} while (0)

	(_v3) - (_v1) + 1;						\

})



#endif /* CONFIG_CC_IS_CLANG */



#ifdef CONFIG_CC_IS_CLANG



#define fpu_vstm(_v1, _v3, _vxrs) do {					\

#define fpu_vstm(_v1, _v3, _vxrs)					\

({									\

	unsigned int size = ((_v3) - (_v1) + 1) * sizeof(__vector128);	\

	struct {							\

		__vector128 _v[(_v3) - (_v1) + 1];			\
@@ -159,11 +164,13 @@ static __always_inline void fpu_stfpc(unsigned int *fpc) 
		: [vxrs] "=R" (*_v)					\

		: [v1] "I" (_v1), [v3] "I" (_v3)			\

		: "memory", "1");					\

} while (0)

	(_v3) - (_v1) + 1;						\

})



#else /* CONFIG_CC_IS_CLANG */



#define fpu_vstm(_v1, _v3, _vxrs) do {					\

#define fpu_vstm(_v1, _v3, _vxrs)					\

({									\

	unsigned int size = ((_v3) - (_v1) + 1) * sizeof(__vector128);	\

	struct {							\

		__vector128 _v[(_v3) - (_v1) + 1];			\
@@ -174,7 +181,8 @@ static __always_inline void fpu_stfpc(unsigned int *fpc) 
		     : [vxrs] "=Q" (*_v)				\

		     : [v1] "I" (_v1), [v3] "I" (_v3)			\

		     : "memory");					\

} while (0)

	(_v3) - (_v1) + 1;						\

})



#endif /* CONFIG_CC_IS_CLANG */