[deliverable/linux.git] / arch / arm / include / asm / compiler.h

#ifndef __ASM_ARM_COMPILER_H
#define __ASM_ARM_COMPILER_H

/*
 * This is used to ensure the compiler did actually allocate the register we
 * asked it for some inline assembly sequences.  Apparently we can't trust
 * the compiler from one version to another so a bit of paranoia won't hurt.
 * This string is meant to be concatenated with the inline asm string and
 * will cause compilation to stop on mismatch.
 * (for details, see gcc PR 15089)
 * For compatibility with clang, we have to specifically take the equivalence
 * of 'r11' <-> 'fp' and 'r12' <-> 'ip' into account as well.
 */
#define __asmeq(x, y)				\
	".ifnc " x "," y "; "			\
	  ".ifnc " x y ",fpr11; " 		\
	    ".ifnc " x y ",r11fp; "		\
	      ".ifnc " x y ",ipr12; " 		\
	        ".ifnc " x y ",r12ip; "		\
	          ".err; "			\
	        ".endif; "			\
	      ".endif; "			\
	    ".endif; "				\
	  ".endif; "				\
	".endif\n\t"


#endif /* __ASM_ARM_COMPILER_H */
Commit	Line	Data
9f97da78 DH	1	#ifndef __ASM_ARM_COMPILER_H
	2	#define __ASM_ARM_COMPILER_H
	3
	4	/*
	5	* This is used to ensure the compiler did actually allocate the register we
	6	* asked it for some inline assembly sequences. Apparently we can't trust
	7	* the compiler from one version to another so a bit of paranoia won't hurt.
	8	* This string is meant to be concatenated with the inline asm string and
	9	* will cause compilation to stop on mismatch.
	10	* (for details, see gcc PR 15089)
ada63d40 AB	11	* For compatibility with clang, we have to specifically take the equivalence
ada63d40 AB	12	* of 'r11' <-> 'fp' and 'r12' <-> 'ip' into account as well.
9f97da78	13	*/
ada63d40 AB	14	#define __asmeq(x, y) \
	15	".ifnc " x "," y "; " \
	16	".ifnc " x y ",fpr11; " \
	17	".ifnc " x y ",r11fp; " \
	18	".ifnc " x y ",ipr12; " \
	19	".ifnc " x y ",r12ip; " \
	20	".err; " \
	21	".endif; " \
	22	".endif; " \
	23	".endif; " \
	24	".endif; " \
	25	".endif\n\t"
9f97da78 DH	26
	27
	28	#endif /* __ASM_ARM_COMPILER_H */