include/asm/opcodes.h

1 /* SPDX-License-Identifier: GPL-2.0-only */
24 #define ___asm_opcode_swab32(x) (	\  argument
25 	  (((x) << 24) & 0xFF000000)	\
26 	| (((x) <<  8) & 0x00FF0000)	\
27 	| (((x) >>  8) & 0x0000FF00)	\
28 	| (((x) >> 24) & 0x000000FF)	\
30 #define ___asm_opcode_swab16(x) (	\  argument
31 	  (((x) << 8) & 0xFF00)		\
32 	| (((x) >> 8) & 0x00FF)		\
34 #define ___asm_opcode_swahb32(x) (	\  argument
35 	  (((x) << 8) & 0xFF00FF00)	\
36 	| (((x) >> 8) & 0x00FF00FF)	\
38 #define ___asm_opcode_swahw32(x) (	\  argument
39 	  (((x) << 16) & 0xFFFF0000)	\
40 	| (((x) >> 16) & 0x0000FFFF)	\
42 #define ___asm_opcode_identity32(x) ((x) & 0xFFFFFFFF)  argument
43 #define ___asm_opcode_identity16(x) ((x) & 0xFFFF)  argument
50  * format and in-memory representation, in an endianness-agnostic manner.
52  * __mem_to_opcode_*() convert from in-memory representation to canonical form.
53  * __opcode_to_mem_*() convert from canonical form to in-memory representation.
59  *	Thumb 16-bit:	0x0000KKLL, where KK < 0xE8
60  *	Thumb 32-bit:	0xKKLLMMNN, where KK >= 0xE8
67  * represent any valid Thumb-2 instruction.  For this range,
76 #define ___opcode_swab32(x) ___asm_opcode_swab32(x)
77 #define ___opcode_swab16(x) ___asm_opcode_swab16(x)
78 #define ___opcode_swahb32(x) ___asm_opcode_swahb32(x)
79 #define ___opcode_swahw32(x) ___asm_opcode_swahw32(x)
80 #define ___opcode_identity32(x) ___asm_opcode_identity32(x)
81 #define ___opcode_identity16(x) ___asm_opcode_identity16(x)
88 #define ___opcode_swab32(x) swab32(x)  argument
89 #define ___opcode_swab16(x) swab16(x)  argument
90 #define ___opcode_swahb32(x) swahb32(x)  argument
91 #define ___opcode_swahw32(x) swahw32(x)  argument
92 #define ___opcode_identity32(x) ((u32)(x))  argument
93 #define ___opcode_identity16(x) ((u16)(x))  argument
100 #define __opcode_to_mem_arm(x) ___opcode_swab32(x)  argument
101 #define __opcode_to_mem_thumb16(x) ___opcode_swab16(x)  argument
102 #define __opcode_to_mem_thumb32(x) ___opcode_swahb32(x)  argument
103 #define ___asm_opcode_to_mem_arm(x) ___asm_opcode_swab32(x)  argument
104 #define ___asm_opcode_to_mem_thumb16(x) ___asm_opcode_swab16(x)  argument
105 #define ___asm_opcode_to_mem_thumb32(x) ___asm_opcode_swahb32(x)  argument
109 #define __opcode_to_mem_arm(x) ___opcode_identity32(x)  argument
110 #define __opcode_to_mem_thumb16(x) ___opcode_identity16(x)  argument
111 #define ___asm_opcode_to_mem_arm(x) ___asm_opcode_identity32(x)  argument
112 #define ___asm_opcode_to_mem_thumb16(x) ___asm_opcode_identity16(x)  argument
116  * On BE32 systems, using 32-bit accesses to store Thumb instructions will not
124 #define __opcode_to_mem_thumb32(x) ___opcode_swahw32(x)  argument
125 #define ___asm_opcode_to_mem_thumb32(x) ___asm_opcode_swahw32(x)  argument
130 #define __mem_to_opcode_arm(x) __opcode_to_mem_arm(x)  argument
131 #define __mem_to_opcode_thumb16(x) __opcode_to_mem_thumb16(x)  argument
133 #define __mem_to_opcode_thumb32(x) __opcode_to_mem_thumb32(x)  argument
139 #define __opcode_is_thumb32(x) (		\  argument
140 	   ((x) & 0xF8000000) == 0xE8000000	\
141 	|| ((x) & 0xF0000000) == 0xF0000000	\
143 #define __opcode_is_thumb16(x) (					\  argument
144 	   ((x) & 0xFFFF0000) == 0					\
145 	&& !(((x) & 0xF800) == 0xE800 || ((x) & 0xF000) == 0xF000)	\
148 /* Operations to construct or split 32-bit Thumb instructions: */
149 #define __opcode_thumb32_first(x) (___opcode_identity16((x) >> 16))  argument
150 #define __opcode_thumb32_second(x) (___opcode_identity16(x))  argument
155 #define ___asm_opcode_thumb32_first(x) (___asm_opcode_identity16((x) >> 16))  argument
156 #define ___asm_opcode_thumb32_second(x) (___asm_opcode_identity16(x))  argument
179  * __inst_arm(x): emit the specified ARM opcode
180  * __inst_thumb16(x): emit the specified 16-bit Thumb opcode
181  * __inst_thumb32(x): emit the specified 32-bit Thumb opcode
184  *	16-bit Thumb opcode, depending on whether an ARM or Thumb-2
188  *	32-bit Thumb opcode, depending on whether an ARM or Thumb-2
193  * should use them to define human-readable wrapper macros to encode the
200  * Look at opcodes-virt.h for an example of how to use these macros.
204 #define __inst_arm(x) ___inst_arm(___asm_opcode_to_mem_arm(x))  argument
205 #define __inst_thumb32(x) ___inst_thumb32(				\  argument
206 	___asm_opcode_to_mem_thumb16(___asm_opcode_thumb32_first(x)),	\
207 	___asm_opcode_to_mem_thumb16(___asm_opcode_thumb32_second(x))	\
209 #define __inst_thumb16(x) ___inst_thumb16(___asm_opcode_to_mem_thumb16(x))  argument
223 #define ___inst_arm(x) .long x
224 #define ___inst_thumb16(x) .short x
227 #define ___inst_arm(x) ".long " __stringify(x) "\n\t"  argument
228 #define ___inst_thumb16(x) ".short " __stringify(x) "\n\t"  argument