arm/probes/decode.c

196 prepare_emulated_insn(probes_opcode_t insn, struct arch_probes_insn *asi,
201 		u16 *thumb_insn = (u16 *)asi->insn;
205 		return insn;
207 	asi->insn[1] = __opcode_to_mem_arm(0xe12fff1e); /* ARM bx lr */
209 	asi->insn[1] = __opcode_to_mem_arm(0xe1a0f00e); /* mov pc, lr */
212 	if (insn < 0xe0000000)
213 		insn = (insn | 0xe0000000) & ~0x10000000;
214 	return insn;
222 set_emulated_insn(probes_opcode_t insn, struct arch_probes_insn *asi,
227 		u16 *ip = (u16 *)asi->insn;
228 		if (is_wide_instruction(insn))
229 			*ip++ = __opcode_to_mem_thumb16(insn >> 16);
230 		*ip++ = __opcode_to_mem_thumb16(insn);
234 	asi->insn[0] = __opcode_to_mem_arm(insn);
260 	probes_opcode_t insn = *pinsn;
284 			if ((insn ^ 0xdddddddd) & mask)
290 			if ((insn ^ 0xffffffff) & mask)
296 			if (((insn ^ 0xdddddddd) & mask) == 0)
303 			if (((insn ^ 0xdddddddd) & 0xdddddddd & mask) == 0)
308 			if (!is_writeback(insn))
314 			if (((insn ^ 0xffffffff) & mask) == 0)
320 		insn &= ~mask;
321 		insn |= new_bits & mask;
325 		*pinsn = insn;
343 		int action, probes_opcode_t insn,
359 			retval = checker_func(insn, asi, h);
396  *	(insn & mask) == value
411 probes_decode_insn(probes_opcode_t insn, struct arch_probes_insn *asi,
420 	 * @insn can be modified by decode_regs. Save its original
423 	probes_opcode_t origin_insn = insn;
443 		insn = prepare_emulated_insn(insn, asi, thumb);
455 		if (!matched && (insn & h->mask.bits) != h->value.bits)
458 		if (!decode_regs(&insn, regs, emulate))
477 			return actions[action].decoder(insn, asi, h);
502 				return actions[action].decoder(insn, asi, h);
505 			set_emulated_insn(insn, asi, thumb);