1 /* 2 * This program is free software; you can redistribute it and/or modify 3 * it under the terms of the GNU General Public License, version 2, as 4 * published by the Free Software Foundation. 5 * 6 * This program is distributed in the hope that it will be useful, 7 * but WITHOUT ANY WARRANTY; without even the implied warranty of 8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 9 * GNU General Public License for more details. 10 * 11 * You should have received a copy of the GNU General Public License 12 * along with this program; if not, write to the Free Software 13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 14 * 15 * Copyright IBM Corp. 2008 16 * 17 * Authors: Hollis Blanchard <hollisb@us.ibm.com> 18 */ 19 20 #ifndef __ASM_PPC_DISASSEMBLE_H__ 21 #define __ASM_PPC_DISASSEMBLE_H__ 22 23 #include <linux/types.h> 24 25 static inline unsigned int get_op(u32 inst) 26 { 27 return inst >> 26; 28 } 29 30 static inline unsigned int get_xop(u32 inst) 31 { 32 return (inst >> 1) & 0x3ff; 33 } 34 35 static inline unsigned int get_sprn(u32 inst) 36 { 37 return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0); 38 } 39 40 static inline unsigned int get_dcrn(u32 inst) 41 { 42 return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0); 43 } 44 45 static inline unsigned int get_tmrn(u32 inst) 46 { 47 return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0); 48 } 49 50 static inline unsigned int get_rt(u32 inst) 51 { 52 return (inst >> 21) & 0x1f; 53 } 54 55 static inline unsigned int get_rs(u32 inst) 56 { 57 return (inst >> 21) & 0x1f; 58 } 59 60 static inline unsigned int get_ra(u32 inst) 61 { 62 return (inst >> 16) & 0x1f; 63 } 64 65 static inline unsigned int get_rb(u32 inst) 66 { 67 return (inst >> 11) & 0x1f; 68 } 69 70 static inline unsigned int get_rc(u32 inst) 71 { 72 return inst & 0x1; 73 } 74 75 static inline unsigned int get_ws(u32 inst) 76 { 77 return (inst >> 11) & 0x1f; 78 } 79 80 static inline unsigned int get_d(u32 inst) 81 { 82 return inst & 0xffff; 83 } 84 85 static inline unsigned int get_oc(u32 inst) 86 { 87 return (inst >> 11) & 0x7fff; 88 } 89 90 static inline unsigned int get_tx_or_sx(u32 inst) 91 { 92 return (inst) & 0x1; 93 } 94 95 #define IS_XFORM(inst) (get_op(inst) == 31) 96 #define IS_DSFORM(inst) (get_op(inst) >= 56) 97 98 /* 99 * Create a DSISR value from the instruction 100 */ 101 static inline unsigned make_dsisr(unsigned instr) 102 { 103 unsigned dsisr; 104 105 106 /* bits 6:15 --> 22:31 */ 107 dsisr = (instr & 0x03ff0000) >> 16; 108 109 if (IS_XFORM(instr)) { 110 /* bits 29:30 --> 15:16 */ 111 dsisr |= (instr & 0x00000006) << 14; 112 /* bit 25 --> 17 */ 113 dsisr |= (instr & 0x00000040) << 8; 114 /* bits 21:24 --> 18:21 */ 115 dsisr |= (instr & 0x00000780) << 3; 116 } else { 117 /* bit 5 --> 17 */ 118 dsisr |= (instr & 0x04000000) >> 12; 119 /* bits 1: 4 --> 18:21 */ 120 dsisr |= (instr & 0x78000000) >> 17; 121 /* bits 30:31 --> 12:13 */ 122 if (IS_DSFORM(instr)) 123 dsisr |= (instr & 0x00000003) << 18; 124 } 125 126 return dsisr; 127 } 128 #endif /* __ASM_PPC_DISASSEMBLE_H__ */ 129