include/asm/disassemble.h

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /*
0003  *
0004  * Copyright IBM Corp. 2008
0005  *
0006  * Authors: Hollis Blanchard <hollisb@us.ibm.com>
0007  */
0008
0009 #ifndef __ASM_PPC_DISASSEMBLE_H__
0010 #define __ASM_PPC_DISASSEMBLE_H__
0011
0012 #include <linux/types.h>
0013
0014 static inline unsigned int get_op(u32 inst)
0015 {
0016     return inst >> 26;
0017 }
0018
0019 static inline unsigned int get_xop(u32 inst)
0020 {
0021     return (inst >> 1) & 0x3ff;
0022 }
0023
0024 static inline unsigned int get_sprn(u32 inst)
0025 {
0026     return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0);
0027 }
0028
0029 static inline unsigned int get_dcrn(u32 inst)
0030 {
0031     return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0);
0032 }
0033
0034 static inline unsigned int get_tmrn(u32 inst)
0035 {
0036     return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0);
0037 }
0038
0039 static inline unsigned int get_rt(u32 inst)
0040 {
0041     return (inst >> 21) & 0x1f;
0042 }
0043
0044 static inline unsigned int get_rs(u32 inst)
0045 {
0046     return (inst >> 21) & 0x1f;
0047 }
0048
0049 static inline unsigned int get_ra(u32 inst)
0050 {
0051     return (inst >> 16) & 0x1f;
0052 }
0053
0054 static inline unsigned int get_rb(u32 inst)
0055 {
0056     return (inst >> 11) & 0x1f;
0057 }
0058
0059 static inline unsigned int get_rc(u32 inst)
0060 {
0061     return inst & 0x1;
0062 }
0063
0064 static inline unsigned int get_ws(u32 inst)
0065 {
0066     return (inst >> 11) & 0x1f;
0067 }
0068
0069 static inline unsigned int get_d(u32 inst)
0070 {
0071     return inst & 0xffff;
0072 }
0073
0074 static inline unsigned int get_oc(u32 inst)
0075 {
0076     return (inst >> 11) & 0x7fff;
0077 }
0078
0079 static inline unsigned int get_tx_or_sx(u32 inst)
0080 {
0081     return (inst) & 0x1;
0082 }
0083
0084 #define IS_XFORM(inst)  (get_op(inst)  == 31)
0085 #define IS_DSFORM(inst) (get_op(inst) >= 56)
0086
0087 /*
0088  * Create a DSISR value from the instruction
0089  */
0090 static inline unsigned make_dsisr(unsigned instr)
0091 {
0092     unsigned dsisr;
0093
0094
0095     /* bits  6:15 --> 22:31 */
0096     dsisr = (instr & 0x03ff0000) >> 16;
0097
0098     if (IS_XFORM(instr)) {
0099         /* bits 29:30 --> 15:16 */
0100         dsisr |= (instr & 0x00000006) << 14;
0101         /* bit     25 -->    17 */
0102         dsisr |= (instr & 0x00000040) << 8;
0103         /* bits 21:24 --> 18:21 */
0104         dsisr |= (instr & 0x00000780) << 3;
0105     } else {
0106         /* bit      5 -->    17 */
0107         dsisr |= (instr & 0x04000000) >> 12;
0108         /* bits  1: 4 --> 18:21 */
0109         dsisr |= (instr & 0x78000000) >> 17;
0110         /* bits 30:31 --> 12:13 */
0111         if (IS_DSFORM(instr))
0112             dsisr |= (instr & 0x00000003) << 18;
0113     }
0114
0115     return dsisr;
0116 }
0117 #endif /* __ASM_PPC_DISASSEMBLE_H__ */