arm/klibc/asmmacros.h

/*
 * usr/include/arch/arm/klibc/asmmacros.h
 *
 * Assembly macros used by ARM system call stubs
 */

#ifndef _KLIBC_ASMMACROS_H
#define _KLIBC_ASMMACROS_H

/* An immediate in ARM can be any 8-bit value rotated by an even number of bits */

#define ARM_VALID_IMM(x)	\
	((((x) & ~0x000000ff) == 0) || \
	 (((x) & ~0x000003fc) == 0) || \
	 (((x) & ~0x00000ff0) == 0) || \
	 (((x) & ~0x00003fc0) == 0) || \
	 (((x) & ~0x0000ff00) == 0) || \
	 (((x) & ~0x0003fc00) == 0) || \
	 (((x) & ~0x000ff000) == 0) || \
	 (((x) & ~0x003fc000) == 0) || \
	 (((x) & ~0x00ff0000) == 0) || \
	 (((x) & ~0x03fc0000) == 0) || \
	 (((x) & ~0x0ff00000) == 0) || \
	 (((x) & ~0x3fc00000) == 0) || \
	 (((x) & ~0xff000000) == 0) || \
	 (((x) & ~0xfc000003) == 0) || \
	 (((x) & ~0xf000000f) == 0) || \
	 (((x) & ~0xc000003f) == 0))

#endif /* _KLIBC_ASMMACROS_H */
1	/*
2	* usr/include/arch/arm/klibc/asmmacros.h
3	*
4	* Assembly macros used by ARM system call stubs
5	*/
6
7	#ifndef _KLIBC_ASMMACROS_H
8	#define _KLIBC_ASMMACROS_H
9
10	/* An immediate in ARM can be any 8-bit value rotated by an even number of bits */
11
12	#define ARM_VALID_IMM(x) \
13	((((x) & ~0x000000ff) == 0) \|\| \
14	(((x) & ~0x000003fc) == 0) \|\| \
15	(((x) & ~0x00000ff0) == 0) \|\| \
16	(((x) & ~0x00003fc0) == 0) \|\| \
17	(((x) & ~0x0000ff00) == 0) \|\| \
18	(((x) & ~0x0003fc00) == 0) \|\| \
19	(((x) & ~0x000ff000) == 0) \|\| \
20	(((x) & ~0x003fc000) == 0) \|\| \
21	(((x) & ~0x00ff0000) == 0) \|\| \
22	(((x) & ~0x03fc0000) == 0) \|\| \
23	(((x) & ~0x0ff00000) == 0) \|\| \
24	(((x) & ~0x3fc00000) == 0) \|\| \
25	(((x) & ~0xff000000) == 0) \|\| \
26	(((x) & ~0xfc000003) == 0) \|\| \
27	(((x) & ~0xf000000f) == 0) \|\| \
28	(((x) & ~0xc000003f) == 0))
29
30	#endif /* _KLIBC_ASMMACROS_H */