1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __ASM_ARM_COMPILER_H
3 #define __ASM_ARM_COMPILER_H
4 
5 /*
6  * This is used to ensure the compiler did actually allocate the register we
7  * asked it for some inline assembly sequences.  Apparently we can't trust
8  * the compiler from one version to another so a bit of paranoia won't hurt.
9  * This string is meant to be concatenated with the inline asm string and
10  * will cause compilation to stop on mismatch.
11  * (for details, see gcc PR 15089)
12  * For compatibility with clang, we have to specifically take the equivalence
13  * of 'r11' <-> 'fp' and 'r12' <-> 'ip' into account as well.
14  */
15 #define __asmeq(x, y)				\
16 	".ifnc " x "," y "; "			\
17 	  ".ifnc " x y ",fpr11; " 		\
18 	    ".ifnc " x y ",r11fp; "		\
19 	      ".ifnc " x y ",ipr12; " 		\
20 	        ".ifnc " x y ",r12ip; "		\
21 	          ".err; "			\
22 	        ".endif; "			\
23 	      ".endif; "			\
24 	    ".endif; "				\
25 	  ".endif; "				\
26 	".endif\n\t"
27 
28 
29 #endif /* __ASM_ARM_COMPILER_H */
30