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 14 static inline unsigned int get_op(u32 inst) 15 { 16 return inst >> 26; 17 } 18 19 static inline unsigned int get_xop(u32 inst) 20 { 21 return (inst >> 1) & 0x3ff; 22 } 23 24 static inline unsigned int get_sprn(u32 inst) 25 { 26 return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0); 27 } 28 29 static inline unsigned int get_dcrn(u32 inst) 30 { 31 return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0); 32 } 33 34 static inline unsigned int get_tmrn(u32 inst) 35 { 36 return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0); 37 } 38 39 static inline unsigned int get_rt(u32 inst) 40 { 41 return (inst >> 21) & 0x1f; 42 } 43 44 static inline unsigned int get_rs(u32 inst) 45 { 46 return (inst >> 21) & 0x1f; 47 } 48 49 static inline unsigned int get_ra(u32 inst) 50 { 51 return (inst >> 16) & 0x1f; 52 } 53 54 static inline unsigned int get_rb(u32 inst) 55 { 56 return (inst >> 11) & 0x1f; 57 } 58 59 static inline unsigned int get_rc(u32 inst) 60 { 61 return inst & 0x1; 62 } 63 64 static inline unsigned int get_ws(u32 inst) 65 { 66 return (inst >> 11) & 0x1f; 67 } 68 69 static inline unsigned int get_d(u32 inst) 70 { 71 return inst & 0xffff; 72 } 73 74 static inline unsigned int get_oc(u32 inst) 75 { 76 return (inst >> 11) & 0x7fff; 77 } 78 79 static 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 */ 90 static 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__ */ 118