disassemble.h

  1/* SPDX-License-Identifier: GPL-2.0-only */
  2/*
  3 *
  4 * Copyright IBM Corp. 2008
  5 *
  6 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
  7 */
  8
  9#ifndef __ASM_PPC_DISASSEMBLE_H__
 10#define __ASM_PPC_DISASSEMBLE_H__
 11
 12#include <linux/types.h>
 13
 14static inline unsigned int get_op(u32 inst)
 15{
 16	return inst >> 26;
 17}
 18
 19static inline unsigned int get_xop(u32 inst)
 20{
 21	return (inst >> 1) & 0x3ff;
 22}
 23
 24static inline unsigned int get_sprn(u32 inst)
 25{
 26	return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0);
 27}
 28
 29static inline unsigned int get_dcrn(u32 inst)
 30{
 31	return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0);
 32}
 33
 34static inline unsigned int get_tmrn(u32 inst)
 35{
 36	return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0);
 37}
 38
 39static inline unsigned int get_rt(u32 inst)
 40{
 41	return (inst >> 21) & 0x1f;
 42}
 43
 44static inline unsigned int get_rs(u32 inst)
 45{
 46	return (inst >> 21) & 0x1f;
 47}
 48
 49static inline unsigned int get_ra(u32 inst)
 50{
 51	return (inst >> 16) & 0x1f;
 52}
 53
 54static inline unsigned int get_rb(u32 inst)
 55{
 56	return (inst >> 11) & 0x1f;
 57}
 58
 59static inline unsigned int get_rc(u32 inst)
 60{
 61	return inst & 0x1;
 62}
 63
 64static inline unsigned int get_ws(u32 inst)
 65{
 66	return (inst >> 11) & 0x1f;
 67}
 68
 69static inline unsigned int get_d(u32 inst)
 70{
 71	return inst & 0xffff;
 72}
 73
 74static inline unsigned int get_oc(u32 inst)
 75{
 76	return (inst >> 11) & 0x7fff;
 77}
 78
 79static inline unsigned int get_tx_or_sx(u32 inst)
 80{
 81	return (inst) & 0x1;
 82}
 83
 84#define IS_XFORM(inst)	(get_op(inst)  == 31)
 85#define IS_DSFORM(inst)	(get_op(inst) >= 56)
 86
 87/*
 88 * Create a DSISR value from the instruction
 89 */
 90static inline unsigned make_dsisr(unsigned instr)
 91{
 92	unsigned dsisr;
 93
 94
 95	/* bits  6:15 --> 22:31 */
 96	dsisr = (instr & 0x03ff0000) >> 16;
 97
 98	if (IS_XFORM(instr)) {
 99		/* bits 29:30 --> 15:16 */
100		dsisr |= (instr & 0x00000006) << 14;
101		/* bit     25 -->    17 */
102		dsisr |= (instr & 0x00000040) << 8;
103		/* bits 21:24 --> 18:21 */
104		dsisr |= (instr & 0x00000780) << 3;
105	} else {
106		/* bit      5 -->    17 */
107		dsisr |= (instr & 0x04000000) >> 12;
108		/* bits  1: 4 --> 18:21 */
109		dsisr |= (instr & 0x78000000) >> 17;
110		/* bits 30:31 --> 12:13 */
111		if (IS_DSFORM(instr))
112			dsisr |= (instr & 0x00000003) << 18;
113	}
114
115	return dsisr;
116}
117#endif /* __ASM_PPC_DISASSEMBLE_H__ */