[mirror_ubuntu-eoan-kernel.git] / arch / s390 / include / asm / fpu / api.h

/*
 * In-kernel FPU support functions
 *
 * Copyright IBM Corp. 2015
 * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
 */

#ifndef _ASM_S390_FPU_API_H
#define _ASM_S390_FPU_API_H

void save_fpu_regs(void);

static inline int test_fp_ctl(u32 fpc)
{
	u32 orig_fpc;
	int rc;

	asm volatile(
		"	efpc    %1\n"
		"	sfpc	%2\n"
		"0:	sfpc	%1\n"
		"	la	%0,0\n"
		"1:\n"
		EX_TABLE(0b,1b)
		: "=d" (rc), "=&d" (orig_fpc)
		: "d" (fpc), "0" (-EINVAL));
	return rc;
}

#endif /* _ASM_S390_FPU_API_H */
Commit	Line	Data
b0753902 HB	1	/*
	2	* In-kernel FPU support functions
	3	*
	4	* Copyright IBM Corp. 2015
	5	* Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
	6	*/
	7
	8	#ifndef _ASM_S390_FPU_API_H
	9	#define _ASM_S390_FPU_API_H
	10
	11	void save_fpu_regs(void);
	12
	13	static inline int test_fp_ctl(u32 fpc)
	14	{
	15	u32 orig_fpc;
	16	int rc;
	17
	18	asm volatile(
	19	" efpc %1\n"
	20	" sfpc %2\n"
	21	"0: sfpc %1\n"
	22	" la %0,0\n"
	23	"1:\n"
	24	EX_TABLE(0b,1b)
bcf4dd5f	25	: "=d" (rc), "=&d" (orig_fpc)
b0753902 HB	26	: "d" (fpc), "0" (-EINVAL));
	27	return rc;
	28	}
	29
	30	#endif /* _ASM_S390_FPU_API_H */