[linux-2.6-block.git] / arch / x86 / include / asm / rmwcc.h

#ifndef _ASM_X86_RMWcc
#define _ASM_X86_RMWcc

#ifdef CC_HAVE_ASM_GOTO

#define __GEN_RMWcc(fullop, var, cc, ...)				\
do {									\
	asm_volatile_goto (fullop "; j" cc " %l[cc_label]"		\
			: : "m" (var), ## __VA_ARGS__ 			\
			: "memory" : cc_label);				\
	return 0;							\
cc_label:								\
	return 1;							\
} while (0)

#define GEN_UNARY_RMWcc(op, var, arg0, cc) 				\
	__GEN_RMWcc(op " " arg0, var, cc)

#define GEN_BINARY_RMWcc(op, var, vcon, val, arg0, cc)			\
	__GEN_RMWcc(op " %1, " arg0, var, cc, vcon (val))

#else /* !CC_HAVE_ASM_GOTO */

#define __GEN_RMWcc(fullop, var, cc, ...)				\
do {									\
	char c;								\
	asm volatile (fullop "; set" cc " %1"				\
			: "+m" (var), "=qm" (c)				\
			: __VA_ARGS__ : "memory");			\
	return c != 0;							\
} while (0)

#define GEN_UNARY_RMWcc(op, var, arg0, cc)				\
	__GEN_RMWcc(op " " arg0, var, cc)

#define GEN_BINARY_RMWcc(op, var, vcon, val, arg0, cc)			\
	__GEN_RMWcc(op " %2, " arg0, var, cc, vcon (val))

#endif /* CC_HAVE_ASM_GOTO */

#endif /* _ASM_X86_RMWcc */
Commit	Line	Data
0c44c2d0 PZ	1	#ifndef _ASM_X86_RMWcc
	2	#define _ASM_X86_RMWcc
	3
	4	#ifdef CC_HAVE_ASM_GOTO
	5
	6	#define __GEN_RMWcc(fullop, var, cc, ...) \
	7	do { \
88f182dd	8	asm_volatile_goto (fullop "; j" cc " %l[cc_label]" \
0c44c2d0 PZ	9	: : "m" (var), ## __VA_ARGS__ \
	10	: "memory" : cc_label); \
	11	return 0; \
	12	cc_label: \
	13	return 1; \
	14	} while (0)
	15
	16	#define GEN_UNARY_RMWcc(op, var, arg0, cc) \
	17	__GEN_RMWcc(op " " arg0, var, cc)
	18
e0f6dec3 PA	19	#define GEN_BINARY_RMWcc(op, var, vcon, val, arg0, cc) \
e0f6dec3 PA	20	__GEN_RMWcc(op " %1, " arg0, var, cc, vcon (val))
0c44c2d0 PZ	21
	22	#else /* !CC_HAVE_ASM_GOTO */
	23
	24	#define __GEN_RMWcc(fullop, var, cc, ...) \
	25	do { \
	26	char c; \
	27	asm volatile (fullop "; set" cc " %1" \
	28	: "+m" (var), "=qm" (c) \
	29	: __VA_ARGS__ : "memory"); \
	30	return c != 0; \
	31	} while (0)
	32
	33	#define GEN_UNARY_RMWcc(op, var, arg0, cc) \
	34	__GEN_RMWcc(op " " arg0, var, cc)
	35
e0f6dec3 PA	36	#define GEN_BINARY_RMWcc(op, var, vcon, val, arg0, cc) \
e0f6dec3 PA	37	__GEN_RMWcc(op " %2, " arg0, var, cc, vcon (val))
0c44c2d0 PZ	38
	39	#endif /* CC_HAVE_ASM_GOTO */
	40
	41	#endif /* _ASM_X86_RMWcc */