arch/sh/kernel/disassemble.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Disassemble SuperH instructions.
   4  *
   5  * Copyright (C) 1999 kaz Kojima
   6  * Copyright (C) 2008 Paul Mundt
   7  */
   8 #include <linux/kernel.h>
   9 #include <linux/string.h>
  10 #include <linux/uaccess.h>
  11
  12 #include <asm/ptrace.h>
  13
  14 /*
  15  * Format of an instruction in memory.
  16  */
  17 typedef enum {
  18         HEX_0, HEX_1, HEX_2, HEX_3, HEX_4, HEX_5, HEX_6, HEX_7,
  19         HEX_8, HEX_9, HEX_A, HEX_B, HEX_C, HEX_D, HEX_E, HEX_F,
  20         REG_N, REG_M, REG_NM, REG_B,
  21         BRANCH_12, BRANCH_8,
  22         DISP_8, DISP_4,
  23         IMM_4, IMM_4BY2, IMM_4BY4, PCRELIMM_8BY2, PCRELIMM_8BY4,
  24         IMM_8, IMM_8BY2, IMM_8BY4,
  25 } sh_nibble_type;
  26
  27 typedef enum {
  28         A_END, A_BDISP12, A_BDISP8,
  29         A_DEC_M, A_DEC_N,
  30         A_DISP_GBR, A_DISP_PC, A_DISP_REG_M, A_DISP_REG_N,
  31         A_GBR,
  32         A_IMM,
  33         A_INC_M, A_INC_N,
  34         A_IND_M, A_IND_N, A_IND_R0_REG_M, A_IND_R0_REG_N,
  35         A_MACH, A_MACL,
  36         A_PR, A_R0, A_R0_GBR, A_REG_M, A_REG_N, A_REG_B,
  37         A_SR, A_VBR, A_SSR, A_SPC, A_SGR, A_DBR,
  38         F_REG_N, F_REG_M, D_REG_N, D_REG_M,
  39         X_REG_N, /* Only used for argument parsing */
  40         X_REG_M, /* Only used for argument parsing */
  41         DX_REG_N, DX_REG_M, V_REG_N, V_REG_M,
  42         FD_REG_N,
  43         XMTRX_M4,
  44         F_FR0,
  45         FPUL_N, FPUL_M, FPSCR_N, FPSCR_M,
  46 } sh_arg_type;
  47
  48 static struct sh_opcode_info {
  49         char *name;
  50         sh_arg_type arg[7];
  51         sh_nibble_type nibbles[4];
  52 } sh_table[] = {
  53         {"add",{A_IMM,A_REG_N},{HEX_7,REG_N,IMM_8}},
  54         {"add",{ A_REG_M,A_REG_N},{HEX_3,REG_N,REG_M,HEX_C}},
  55         {"addc",{ A_REG_M,A_REG_N},{HEX_3,REG_N,REG_M,HEX_E}},
  56         {"addv",{ A_REG_M,A_REG_N},{HEX_3,REG_N,REG_M,HEX_F}},
  57         {"and",{A_IMM,A_R0},{HEX_C,HEX_9,IMM_8}},
  58         {"and",{ A_REG_M,A_REG_N},{HEX_2,REG_N,REG_M,HEX_9}},
  59         {"and.b",{A_IMM,A_R0_GBR},{HEX_C,HEX_D,IMM_8}},
  60         {"bra",{A_BDISP12},{HEX_A,BRANCH_12}},
  61         {"bsr",{A_BDISP12},{HEX_B,BRANCH_12}},
  62         {"bt",{A_BDISP8},{HEX_8,HEX_9,BRANCH_8}},
  63         {"bf",{A_BDISP8},{HEX_8,HEX_B,BRANCH_8}},
  64         {"bt.s",{A_BDISP8},{HEX_8,HEX_D,BRANCH_8}},
  65         {"bt/s",{A_BDISP8},{HEX_8,HEX_D,BRANCH_8}},
  66         {"bf.s",{A_BDISP8},{HEX_8,HEX_F,BRANCH_8}},
  67         {"bf/s",{A_BDISP8},{HEX_8,HEX_F,BRANCH_8}},
  68         {"clrmac",{0},{HEX_0,HEX_0,HEX_2,HEX_8}},
  69         {"clrs",{0},{HEX_0,HEX_0,HEX_4,HEX_8}},
  70         {"clrt",{0},{HEX_0,HEX_0,HEX_0,HEX_8}},
  71         {"cmp/eq",{A_IMM,A_R0},{HEX_8,HEX_8,IMM_8}},
  72         {"cmp/eq",{ A_REG_M,A_REG_N},{HEX_3,REG_N,REG_M,HEX_0}},
  73         {"cmp/ge",{ A_REG_M,A_REG_N},{HEX_3,REG_N,REG_M,HEX_3}},
  74         {"cmp/gt",{ A_REG_M,A_REG_N},{HEX_3,REG_N,REG_M,HEX_7}},
  75         {"cmp/hi",{ A_REG_M,A_REG_N},{HEX_3,REG_N,REG_M,HEX_6}},
  76         {"cmp/hs",{ A_REG_M,A_REG_N},{HEX_3,REG_N,REG_M,HEX_2}},
  77         {"cmp/pl",{A_REG_N},{HEX_4,REG_N,HEX_1,HEX_5}},
  78         {"cmp/pz",{A_REG_N},{HEX_4,REG_N,HEX_1,HEX_1}},
  79         {"cmp/str",{ A_REG_M,A_REG_N},{HEX_2,REG_N,REG_M,HEX_C}},
  80         {"div0s",{ A_REG_M,A_REG_N},{HEX_2,REG_N,REG_M,HEX_7}},
  81         {"div0u",{0},{HEX_0,HEX_0,HEX_1,HEX_9}},
  82         {"div1",{ A_REG_M,A_REG_N},{HEX_3,REG_N,REG_M,HEX_4}},
  83         {"exts.b",{ A_REG_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_E}},
  84         {"exts.w",{ A_REG_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_F}},
  85         {"extu.b",{ A_REG_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_C}},
  86         {"extu.w",{ A_REG_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_D}},
  87         {"jmp",{A_IND_N},{HEX_4,REG_N,HEX_2,HEX_B}},
  88         {"jsr",{A_IND_N},{HEX_4,REG_N,HEX_0,HEX_B}},
  89         {"ldc",{A_REG_N,A_SR},{HEX_4,REG_N,HEX_0,HEX_E}},
  90         {"ldc",{A_REG_N,A_GBR},{HEX_4,REG_N,HEX_1,HEX_E}},
  91         {"ldc",{A_REG_N,A_VBR},{HEX_4,REG_N,HEX_2,HEX_E}},
  92         {"ldc",{A_REG_N,A_SSR},{HEX_4,REG_N,HEX_3,HEX_E}},
  93         {"ldc",{A_REG_N,A_SPC},{HEX_4,REG_N,HEX_4,HEX_E}},
  94         {"ldc",{A_REG_N,A_DBR},{HEX_4,REG_N,HEX_7,HEX_E}},
  95         {"ldc",{A_REG_N,A_REG_B},{HEX_4,REG_N,REG_B,HEX_E}},
  96         {"ldc.l",{A_INC_N,A_SR},{HEX_4,REG_N,HEX_0,HEX_7}},
  97         {"ldc.l",{A_INC_N,A_GBR},{HEX_4,REG_N,HEX_1,HEX_7}},
  98         {"ldc.l",{A_INC_N,A_VBR},{HEX_4,REG_N,HEX_2,HEX_7}},
  99         {"ldc.l",{A_INC_N,A_SSR},{HEX_4,REG_N,HEX_3,HEX_7}},
 100         {"ldc.l",{A_INC_N,A_SPC},{HEX_4,REG_N,HEX_4,HEX_7}},
 101         {"ldc.l",{A_INC_N,A_DBR},{HEX_4,REG_N,HEX_7,HEX_7}},
 102         {"ldc.l",{A_INC_N,A_REG_B},{HEX_4,REG_N,REG_B,HEX_7}},
 103         {"lds",{A_REG_N,A_MACH},{HEX_4,REG_N,HEX_0,HEX_A}},
 104         {"lds",{A_REG_N,A_MACL},{HEX_4,REG_N,HEX_1,HEX_A}},
 105         {"lds",{A_REG_N,A_PR},{HEX_4,REG_N,HEX_2,HEX_A}},
 106         {"lds",{A_REG_M,FPUL_N},{HEX_4,REG_M,HEX_5,HEX_A}},
 107         {"lds",{A_REG_M,FPSCR_N},{HEX_4,REG_M,HEX_6,HEX_A}},
 108         {"lds.l",{A_INC_N,A_MACH},{HEX_4,REG_N,HEX_0,HEX_6}},
 109         {"lds.l",{A_INC_N,A_MACL},{HEX_4,REG_N,HEX_1,HEX_6}},
 110         {"lds.l",{A_INC_N,A_PR},{HEX_4,REG_N,HEX_2,HEX_6}},
 111         {"lds.l",{A_INC_M,FPUL_N},{HEX_4,REG_M,HEX_5,HEX_6}},
 112         {"lds.l",{A_INC_M,FPSCR_N},{HEX_4,REG_M,HEX_6,HEX_6}},
 113         {"ldtlb",{0},{HEX_0,HEX_0,HEX_3,HEX_8}},
 114         {"mac.w",{A_INC_M,A_INC_N},{HEX_4,REG_N,REG_M,HEX_F}},
 115         {"mov",{A_IMM,A_REG_N},{HEX_E,REG_N,IMM_8}},
 116         {"mov",{ A_REG_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_3}},
 117         {"mov.b",{ A_REG_M,A_IND_R0_REG_N},{HEX_0,REG_N,REG_M,HEX_4}},
 118         {"mov.b",{ A_REG_M,A_DEC_N},{HEX_2,REG_N,REG_M,HEX_4}},
 119         {"mov.b",{ A_REG_M,A_IND_N},{HEX_2,REG_N,REG_M,HEX_0}},
 120         {"mov.b",{A_DISP_REG_M,A_R0},{HEX_8,HEX_4,REG_M,IMM_4}},
 121         {"mov.b",{A_DISP_GBR,A_R0},{HEX_C,HEX_4,IMM_8}},
 122         {"mov.b",{A_IND_R0_REG_M,A_REG_N},{HEX_0,REG_N,REG_M,HEX_C}},
 123         {"mov.b",{A_INC_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_4}},
 124         {"mov.b",{A_IND_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_0}},
 125         {"mov.b",{A_R0,A_DISP_REG_M},{HEX_8,HEX_0,REG_M,IMM_4}},
 126         {"mov.b",{A_R0,A_DISP_GBR},{HEX_C,HEX_0,IMM_8}},
 127         {"mov.l",{ A_REG_M,A_DISP_REG_N},{HEX_1,REG_N,REG_M,IMM_4BY4}},
 128         {"mov.l",{ A_REG_M,A_IND_R0_REG_N},{HEX_0,REG_N,REG_M,HEX_6}},
 129         {"mov.l",{ A_REG_M,A_DEC_N},{HEX_2,REG_N,REG_M,HEX_6}},
 130         {"mov.l",{ A_REG_M,A_IND_N},{HEX_2,REG_N,REG_M,HEX_2}},
 131         {"mov.l",{A_DISP_REG_M,A_REG_N},{HEX_5,REG_N,REG_M,IMM_4BY4}},
 132         {"mov.l",{A_DISP_GBR,A_R0},{HEX_C,HEX_6,IMM_8BY4}},
 133         {"mov.l",{A_DISP_PC,A_REG_N},{HEX_D,REG_N,PCRELIMM_8BY4}},
 134         {"mov.l",{A_IND_R0_REG_M,A_REG_N},{HEX_0,REG_N,REG_M,HEX_E}},
 135         {"mov.l",{A_INC_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_6}},
 136         {"mov.l",{A_IND_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_2}},
 137         {"mov.l",{A_R0,A_DISP_GBR},{HEX_C,HEX_2,IMM_8BY4}},
 138         {"mov.w",{ A_REG_M,A_IND_R0_REG_N},{HEX_0,REG_N,REG_M,HEX_5}},
 139         {"mov.w",{ A_REG_M,A_DEC_N},{HEX_2,REG_N,REG_M,HEX_5}},
 140         {"mov.w",{ A_REG_M,A_IND_N},{HEX_2,REG_N,REG_M,HEX_1}},
 141         {"mov.w",{A_DISP_REG_M,A_R0},{HEX_8,HEX_5,REG_M,IMM_4BY2}},
 142         {"mov.w",{A_DISP_GBR,A_R0},{HEX_C,HEX_5,IMM_8BY2}},
 143         {"mov.w",{A_DISP_PC,A_REG_N},{HEX_9,REG_N,PCRELIMM_8BY2}},
 144         {"mov.w",{A_IND_R0_REG_M,A_REG_N},{HEX_0,REG_N,REG_M,HEX_D}},
 145         {"mov.w",{A_INC_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_5}},
 146         {"mov.w",{A_IND_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_1}},
 147         {"mov.w",{A_R0,A_DISP_REG_M},{HEX_8,HEX_1,REG_M,IMM_4BY2}},
 148         {"mov.w",{A_R0,A_DISP_GBR},{HEX_C,HEX_1,IMM_8BY2}},
 149         {"mova",{A_DISP_PC,A_R0},{HEX_C,HEX_7,PCRELIMM_8BY4}},
 150         {"movca.l",{A_R0,A_IND_N},{HEX_0,REG_N,HEX_C,HEX_3}},
 151         {"movt",{A_REG_N},{HEX_0,REG_N,HEX_2,HEX_9}},
 152         {"muls",{ A_REG_M,A_REG_N},{HEX_2,REG_N,REG_M,HEX_F}},
 153         {"mul.l",{ A_REG_M,A_REG_N},{HEX_0,REG_N,REG_M,HEX_7}},
 154         {"mulu",{ A_REG_M,A_REG_N},{HEX_2,REG_N,REG_M,HEX_E}},
 155         {"neg",{ A_REG_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_B}},
 156         {"negc",{ A_REG_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_A}},
 157         {"nop",{0},{HEX_0,HEX_0,HEX_0,HEX_9}},
 158         {"not",{ A_REG_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_7}},
 159         {"ocbi",{A_IND_N},{HEX_0,REG_N,HEX_9,HEX_3}},
 160         {"ocbp",{A_IND_N},{HEX_0,REG_N,HEX_A,HEX_3}},
 161         {"ocbwb",{A_IND_N},{HEX_0,REG_N,HEX_B,HEX_3}},
 162         {"or",{A_IMM,A_R0},{HEX_C,HEX_B,IMM_8}},
 163         {"or",{ A_REG_M,A_REG_N},{HEX_2,REG_N,REG_M,HEX_B}},
 164         {"or.b",{A_IMM,A_R0_GBR},{HEX_C,HEX_F,IMM_8}},
 165         {"pref",{A_IND_N},{HEX_0,REG_N,HEX_8,HEX_3}},
 166         {"rotcl",{A_REG_N},{HEX_4,REG_N,HEX_2,HEX_4}},
 167         {"rotcr",{A_REG_N},{HEX_4,REG_N,HEX_2,HEX_5}},
 168         {"rotl",{A_REG_N},{HEX_4,REG_N,HEX_0,HEX_4}},
 169         {"rotr",{A_REG_N},{HEX_4,REG_N,HEX_0,HEX_5}},
 170         {"rte",{0},{HEX_0,HEX_0,HEX_2,HEX_B}},
 171         {"rts",{0},{HEX_0,HEX_0,HEX_0,HEX_B}},
 172         {"sets",{0},{HEX_0,HEX_0,HEX_5,HEX_8}},
 173         {"sett",{0},{HEX_0,HEX_0,HEX_1,HEX_8}},
 174         {"shad",{ A_REG_M,A_REG_N},{HEX_4,REG_N,REG_M,HEX_C}},
 175         {"shld",{ A_REG_M,A_REG_N},{HEX_4,REG_N,REG_M,HEX_D}},
 176         {"shal",{A_REG_N},{HEX_4,REG_N,HEX_2,HEX_0}},
 177         {"shar",{A_REG_N},{HEX_4,REG_N,HEX_2,HEX_1}},
 178         {"shll",{A_REG_N},{HEX_4,REG_N,HEX_0,HEX_0}},
 179         {"shll16",{A_REG_N},{HEX_4,REG_N,HEX_2,HEX_8}},
 180         {"shll2",{A_REG_N},{HEX_4,REG_N,HEX_0,HEX_8}},
 181         {"shll8",{A_REG_N},{HEX_4,REG_N,HEX_1,HEX_8}},
 182         {"shlr",{A_REG_N},{HEX_4,REG_N,HEX_0,HEX_1}},
 183         {"shlr16",{A_REG_N},{HEX_4,REG_N,HEX_2,HEX_9}},
 184         {"shlr2",{A_REG_N},{HEX_4,REG_N,HEX_0,HEX_9}},
 185         {"shlr8",{A_REG_N},{HEX_4,REG_N,HEX_1,HEX_9}},
 186         {"sleep",{0},{HEX_0,HEX_0,HEX_1,HEX_B}},
 187         {"stc",{A_SR,A_REG_N},{HEX_0,REG_N,HEX_0,HEX_2}},
 188         {"stc",{A_GBR,A_REG_N},{HEX_0,REG_N,HEX_1,HEX_2}},
 189         {"stc",{A_VBR,A_REG_N},{HEX_0,REG_N,HEX_2,HEX_2}},
 190         {"stc",{A_SSR,A_REG_N},{HEX_0,REG_N,HEX_3,HEX_2}},
 191         {"stc",{A_SPC,A_REG_N},{HEX_0,REG_N,HEX_4,HEX_2}},
 192         {"stc",{A_SGR,A_REG_N},{HEX_0,REG_N,HEX_6,HEX_2}},
 193         {"stc",{A_DBR,A_REG_N},{HEX_0,REG_N,HEX_7,HEX_2}},
 194         {"stc",{A_REG_B,A_REG_N},{HEX_0,REG_N,REG_B,HEX_2}},
 195         {"stc.l",{A_SR,A_DEC_N},{HEX_4,REG_N,HEX_0,HEX_3}},
 196         {"stc.l",{A_GBR,A_DEC_N},{HEX_4,REG_N,HEX_1,HEX_3}},
 197         {"stc.l",{A_VBR,A_DEC_N},{HEX_4,REG_N,HEX_2,HEX_3}},
 198         {"stc.l",{A_SSR,A_DEC_N},{HEX_4,REG_N,HEX_3,HEX_3}},
 199         {"stc.l",{A_SPC,A_DEC_N},{HEX_4,REG_N,HEX_4,HEX_3}},
 200         {"stc.l",{A_SGR,A_DEC_N},{HEX_4,REG_N,HEX_6,HEX_3}},
 201         {"stc.l",{A_DBR,A_DEC_N},{HEX_4,REG_N,HEX_7,HEX_3}},
 202         {"stc.l",{A_REG_B,A_DEC_N},{HEX_4,REG_N,REG_B,HEX_3}},
 203         {"sts",{A_MACH,A_REG_N},{HEX_0,REG_N,HEX_0,HEX_A}},
 204         {"sts",{A_MACL,A_REG_N},{HEX_0,REG_N,HEX_1,HEX_A}},
 205         {"sts",{A_PR,A_REG_N},{HEX_0,REG_N,HEX_2,HEX_A}},
 206         {"sts",{FPUL_M,A_REG_N},{HEX_0,REG_N,HEX_5,HEX_A}},
 207         {"sts",{FPSCR_M,A_REG_N},{HEX_0,REG_N,HEX_6,HEX_A}},
 208         {"sts.l",{A_MACH,A_DEC_N},{HEX_4,REG_N,HEX_0,HEX_2}},
 209         {"sts.l",{A_MACL,A_DEC_N},{HEX_4,REG_N,HEX_1,HEX_2}},
 210         {"sts.l",{A_PR,A_DEC_N},{HEX_4,REG_N,HEX_2,HEX_2}},
 211         {"sts.l",{FPUL_M,A_DEC_N},{HEX_4,REG_N,HEX_5,HEX_2}},
 212         {"sts.l",{FPSCR_M,A_DEC_N},{HEX_4,REG_N,HEX_6,HEX_2}},
 213         {"sub",{ A_REG_M,A_REG_N},{HEX_3,REG_N,REG_M,HEX_8}},
 214         {"subc",{ A_REG_M,A_REG_N},{HEX_3,REG_N,REG_M,HEX_A}},
 215         {"subv",{ A_REG_M,A_REG_N},{HEX_3,REG_N,REG_M,HEX_B}},
 216         {"swap.b",{ A_REG_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_8}},
 217         {"swap.w",{ A_REG_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_9}},
 218         {"tas.b",{A_IND_N},{HEX_4,REG_N,HEX_1,HEX_B}},
 219         {"trapa",{A_IMM},{HEX_C,HEX_3,IMM_8}},
 220         {"tst",{A_IMM,A_R0},{HEX_C,HEX_8,IMM_8}},
 221         {"tst",{ A_REG_M,A_REG_N},{HEX_2,REG_N,REG_M,HEX_8}},
 222         {"tst.b",{A_IMM,A_R0_GBR},{HEX_C,HEX_C,IMM_8}},
 223         {"xor",{A_IMM,A_R0},{HEX_C,HEX_A,IMM_8}},
 224         {"xor",{ A_REG_M,A_REG_N},{HEX_2,REG_N,REG_M,HEX_A}},
 225         {"xor.b",{A_IMM,A_R0_GBR},{HEX_C,HEX_E,IMM_8}},
 226         {"xtrct",{ A_REG_M,A_REG_N},{HEX_2,REG_N,REG_M,HEX_D}},
 227         {"mul.l",{ A_REG_M,A_REG_N},{HEX_0,REG_N,REG_M,HEX_7}},
 228         {"dt",{A_REG_N},{HEX_4,REG_N,HEX_1,HEX_0}},
 229         {"dmuls.l",{ A_REG_M,A_REG_N},{HEX_3,REG_N,REG_M,HEX_D}},
 230         {"dmulu.l",{ A_REG_M,A_REG_N},{HEX_3,REG_N,REG_M,HEX_5}},
 231         {"mac.l",{A_INC_M,A_INC_N},{HEX_0,REG_N,REG_M,HEX_F}},
 232         {"braf",{A_REG_N},{HEX_0,REG_N,HEX_2,HEX_3}},
 233         {"bsrf",{A_REG_N},{HEX_0,REG_N,HEX_0,HEX_3}},
 234         {"fabs",{FD_REG_N},{HEX_F,REG_N,HEX_5,HEX_D}},
 235         {"fadd",{F_REG_M,F_REG_N},{HEX_F,REG_N,REG_M,HEX_0}},
 236         {"fadd",{D_REG_M,D_REG_N},{HEX_F,REG_N,REG_M,HEX_0}},
 237         {"fcmp/eq",{F_REG_M,F_REG_N},{HEX_F,REG_N,REG_M,HEX_4}},
 238         {"fcmp/eq",{D_REG_M,D_REG_N},{HEX_F,REG_N,REG_M,HEX_4}},
 239         {"fcmp/gt",{F_REG_M,F_REG_N},{HEX_F,REG_N,REG_M,HEX_5}},
 240         {"fcmp/gt",{D_REG_M,D_REG_N},{HEX_F,REG_N,REG_M,HEX_5}},
 241         {"fcnvds",{D_REG_N,FPUL_M},{HEX_F,REG_N,HEX_B,HEX_D}},
 242         {"fcnvsd",{FPUL_M,D_REG_N},{HEX_F,REG_N,HEX_A,HEX_D}},
 243         {"fdiv",{F_REG_M,F_REG_N},{HEX_F,REG_N,REG_M,HEX_3}},
 244         {"fdiv",{D_REG_M,D_REG_N},{HEX_F,REG_N,REG_M,HEX_3}},
 245         {"fipr",{V_REG_M,V_REG_N},{HEX_F,REG_NM,HEX_E,HEX_D}},
 246         {"fldi0",{F_REG_N},{HEX_F,REG_N,HEX_8,HEX_D}},
 247         {"fldi1",{F_REG_N},{HEX_F,REG_N,HEX_9,HEX_D}},
 248         {"flds",{F_REG_N,FPUL_M},{HEX_F,REG_N,HEX_1,HEX_D}},
 249         {"float",{FPUL_M,FD_REG_N},{HEX_F,REG_N,HEX_2,HEX_D}},
 250         {"fmac",{F_FR0,F_REG_M,F_REG_N},{HEX_F,REG_N,REG_M,HEX_E}},
 251         {"fmov",{F_REG_M,F_REG_N},{HEX_F,REG_N,REG_M,HEX_C}},
 252         {"fmov",{DX_REG_M,DX_REG_N},{HEX_F,REG_N,REG_M,HEX_C}},
 253         {"fmov",{A_IND_M,F_REG_N},{HEX_F,REG_N,REG_M,HEX_8}},
 254         {"fmov",{A_IND_M,DX_REG_N},{HEX_F,REG_N,REG_M,HEX_8}},
 255         {"fmov",{F_REG_M,A_IND_N},{HEX_F,REG_N,REG_M,HEX_A}},
 256         {"fmov",{DX_REG_M,A_IND_N},{HEX_F,REG_N,REG_M,HEX_A}},
 257         {"fmov",{A_INC_M,F_REG_N},{HEX_F,REG_N,REG_M,HEX_9}},
 258         {"fmov",{A_INC_M,DX_REG_N},{HEX_F,REG_N,REG_M,HEX_9}},
 259         {"fmov",{F_REG_M,A_DEC_N},{HEX_F,REG_N,REG_M,HEX_B}},
 260         {"fmov",{DX_REG_M,A_DEC_N},{HEX_F,REG_N,REG_M,HEX_B}},
 261         {"fmov",{A_IND_R0_REG_M,F_REG_N},{HEX_F,REG_N,REG_M,HEX_6}},
 262         {"fmov",{A_IND_R0_REG_M,DX_REG_N},{HEX_F,REG_N,REG_M,HEX_6}},
 263         {"fmov",{F_REG_M,A_IND_R0_REG_N},{HEX_F,REG_N,REG_M,HEX_7}},
 264         {"fmov",{DX_REG_M,A_IND_R0_REG_N},{HEX_F,REG_N,REG_M,HEX_7}},
 265         {"fmov.d",{A_IND_M,DX_REG_N},{HEX_F,REG_N,REG_M,HEX_8}},
 266         {"fmov.d",{DX_REG_M,A_IND_N},{HEX_F,REG_N,REG_M,HEX_A}},
 267         {"fmov.d",{A_INC_M,DX_REG_N},{HEX_F,REG_N,REG_M,HEX_9}},
 268         {"fmov.d",{DX_REG_M,A_DEC_N},{HEX_F,REG_N,REG_M,HEX_B}},
 269         {"fmov.d",{A_IND_R0_REG_M,DX_REG_N},{HEX_F,REG_N,REG_M,HEX_6}},
 270         {"fmov.d",{DX_REG_M,A_IND_R0_REG_N},{HEX_F,REG_N,REG_M,HEX_7}},
 271         {"fmov.s",{A_IND_M,F_REG_N},{HEX_F,REG_N,REG_M,HEX_8}},
 272         {"fmov.s",{F_REG_M,A_IND_N},{HEX_F,REG_N,REG_M,HEX_A}},
 273         {"fmov.s",{A_INC_M,F_REG_N},{HEX_F,REG_N,REG_M,HEX_9}},
 274         {"fmov.s",{F_REG_M,A_DEC_N},{HEX_F,REG_N,REG_M,HEX_B}},
 275         {"fmov.s",{A_IND_R0_REG_M,F_REG_N},{HEX_F,REG_N,REG_M,HEX_6}},
 276         {"fmov.s",{F_REG_M,A_IND_R0_REG_N},{HEX_F,REG_N,REG_M,HEX_7}},
 277         {"fmul",{F_REG_M,F_REG_N},{HEX_F,REG_N,REG_M,HEX_2}},
 278         {"fmul",{D_REG_M,D_REG_N},{HEX_F,REG_N,REG_M,HEX_2}},
 279         {"fneg",{FD_REG_N},{HEX_F,REG_N,HEX_4,HEX_D}},
 280         {"frchg",{0},{HEX_F,HEX_B,HEX_F,HEX_D}},
 281         {"fschg",{0},{HEX_F,HEX_3,HEX_F,HEX_D}},
 282         {"fsqrt",{FD_REG_N},{HEX_F,REG_N,HEX_6,HEX_D}},
 283         {"fsts",{FPUL_M,F_REG_N},{HEX_F,REG_N,HEX_0,HEX_D}},
 284         {"fsub",{F_REG_M,F_REG_N},{HEX_F,REG_N,REG_M,HEX_1}},
 285         {"fsub",{D_REG_M,D_REG_N},{HEX_F,REG_N,REG_M,HEX_1}},
 286         {"ftrc",{FD_REG_N,FPUL_M},{HEX_F,REG_N,HEX_3,HEX_D}},
 287         {"ftrv",{XMTRX_M4,V_REG_N},{HEX_F,REG_NM,HEX_F,HEX_D}},
 288         { 0 },
 289 };
 290
 291 static void print_sh_insn(u32 memaddr, u16 insn)
 292 {
 293         int relmask = ~0;
 294         int nibs[4] = { (insn >> 12) & 0xf, (insn >> 8) & 0xf, (insn >> 4) & 0xf, insn & 0xf};
 295         int lastsp;
 296         struct sh_opcode_info *op = sh_table;
 297
 298         for (; op->name; op++) {
 299                 int n;
 300                 int imm = 0;
 301                 int rn = 0;
 302                 int rm = 0;
 303                 int rb = 0;
 304                 int disp_pc;
 305                 int disp_pc_addr = 0;
 306
 307                 for (n = 0; n < 4; n++) {
 308                         int i = op->nibbles[n];
 309
 310                         if (i < 16) {
 311                                 if (nibs[n] == i)
 312                                         continue;
 313                                 goto fail;
 314                         }
 315                         switch (i) {
 316                         case BRANCH_8:
 317                                 imm = (nibs[2] << 4) | (nibs[3]);
 318                                 if (imm & 0x80)
 319                                         imm |= ~0xff;
 320                                 imm = ((char)imm) * 2 + 4 ;
 321                                 goto ok;
 322                         case BRANCH_12:
 323                                 imm = ((nibs[1]) << 8) | (nibs[2] << 4) | (nibs[3]);
 324                                 if (imm & 0x800)
 325                                         imm |= ~0xfff;
 326                                 imm = imm * 2 + 4;
 327                                 goto ok;
 328                         case IMM_4:
 329                                 imm = nibs[3];
 330                                 goto ok;
 331                         case IMM_4BY2:
 332                                 imm = nibs[3] <<1;
 333                                 goto ok;
 334                         case IMM_4BY4:
 335                                 imm = nibs[3] <<2;
 336                                 goto ok;
 337                         case IMM_8:
 338                                 imm = (nibs[2] << 4) | nibs[3];
 339                                 goto ok;
 340                         case PCRELIMM_8BY2:
 341                                 imm = ((nibs[2] << 4) | nibs[3]) <<1;
 342                                 relmask = ~1;
 343                                 goto ok;
 344                         case PCRELIMM_8BY4:
 345                                 imm = ((nibs[2] << 4) | nibs[3]) <<2;
 346                                 relmask = ~3;
 347                                 goto ok;
 348                         case IMM_8BY2:
 349                                 imm = ((nibs[2] << 4) | nibs[3]) <<1;
 350                                 goto ok;
 351                         case IMM_8BY4:
 352                                 imm = ((nibs[2] << 4) | nibs[3]) <<2;
 353                                 goto ok;
 354                         case DISP_8:
 355                                 imm = (nibs[2] << 4) | (nibs[3]);
 356                                 goto ok;
 357                         case DISP_4:
 358                                 imm = nibs[3];
 359                                 goto ok;
 360                         case REG_N:
 361                                 rn = nibs[n];
 362                                 break;
 363                         case REG_M:
 364                                 rm = nibs[n];
 365                                 break;
 366                         case REG_NM:
 367                                 rn = (nibs[n] & 0xc) >> 2;
 368                                 rm = (nibs[n] & 0x3);
 369                                 break;
 370                         case REG_B:
 371                                 rb = nibs[n] & 0x07;
 372                                 break;
 373                         default:
 374                                 return;
 375                         }
 376                 }
 377
 378         ok:
 379                 pr_cont("%-8s  ", op->name);
 380                 lastsp = (op->arg[0] == A_END);
 381                 disp_pc = 0;
 382                 for (n = 0; n < 6 && op->arg[n] != A_END; n++) {
 383                         if (n && op->arg[1] != A_END)
 384                                 pr_cont(", ");
 385                         switch (op->arg[n]) {
 386                         case A_IMM:
 387                                 pr_cont("#%d", (char)(imm));
 388                                 break;
 389                         case A_R0:
 390                                 pr_cont("r0");
 391                                 break;
 392                         case A_REG_N:
 393                                 pr_cont("r%d", rn);
 394                                 break;
 395                         case A_INC_N:
 396                                 pr_cont("@r%d+", rn);
 397                                 break;
 398                         case A_DEC_N:
 399                                 pr_cont("@-r%d", rn);
 400                                 break;
 401                         case A_IND_N:
 402                                 pr_cont("@r%d", rn);
 403                                 break;
 404                         case A_DISP_REG_N:
 405                                 pr_cont("@(%d,r%d)", imm, rn);
 406                                 break;
 407                         case A_REG_M:
 408                                 pr_cont("r%d", rm);
 409                                 break;
 410                         case A_INC_M:
 411                                 pr_cont("@r%d+", rm);
 412                                 break;
 413                         case A_DEC_M:
 414                                 pr_cont("@-r%d", rm);
 415                                 break;
 416                         case A_IND_M:
 417                                 pr_cont("@r%d", rm);
 418                                 break;
 419                         case A_DISP_REG_M:
 420                                 pr_cont("@(%d,r%d)", imm, rm);
 421                                 break;
 422                         case A_REG_B:
 423                                 pr_cont("r%d_bank", rb);
 424                                 break;
 425                         case A_DISP_PC:
 426                                 disp_pc = 1;
 427                                 disp_pc_addr = imm + 4 + (memaddr & relmask);
 428                                 pr_cont("%08x <%pS>", disp_pc_addr,
 429                                         (void *)disp_pc_addr);
 430                                 break;
 431                         case A_IND_R0_REG_N:
 432                                 pr_cont("@(r0,r%d)", rn);
 433                                 break;
 434                         case A_IND_R0_REG_M:
 435                                 pr_cont("@(r0,r%d)", rm);
 436                                 break;
 437                         case A_DISP_GBR:
 438                                 pr_cont("@(%d,gbr)", imm);
 439                                 break;
 440                         case A_R0_GBR:
 441                                 pr_cont("@(r0,gbr)");
 442                                 break;
 443                         case A_BDISP12:
 444                         case A_BDISP8:
 445                                 pr_cont("%08x", imm + memaddr);
 446                                 break;
 447                         case A_SR:
 448                                 pr_cont("sr");
 449                                 break;
 450                         case A_GBR:
 451                                 pr_cont("gbr");
 452                                 break;
 453                         case A_VBR:
 454                                 pr_cont("vbr");
 455                                 break;
 456                         case A_SSR:
 457                                 pr_cont("ssr");
 458                                 break;
 459                         case A_SPC:
 460                                 pr_cont("spc");
 461                                 break;
 462                         case A_MACH:
 463                                 pr_cont("mach");
 464                                 break;
 465                         case A_MACL:
 466                                 pr_cont("macl");
 467                                 break;
 468                         case A_PR:
 469                                 pr_cont("pr");
 470                                 break;
 471                         case A_SGR:
 472                                 pr_cont("sgr");
 473                                 break;
 474                         case A_DBR:
 475                                 pr_cont("dbr");
 476                                 break;
 477                         case FD_REG_N:
 478                         case F_REG_N:
 479                                 pr_cont("fr%d", rn);
 480                                 break;
 481                         case F_REG_M:
 482                                 pr_cont("fr%d", rm);
 483                                 break;
 484                         case DX_REG_N:
 485                                 if (rn & 1) {
 486                                         pr_cont("xd%d", rn & ~1);
 487                                         break;
 488                                 }
 489                                 fallthrough;
 490                         case D_REG_N:
 491                                 pr_cont("dr%d", rn);
 492                                 break;
 493                         case DX_REG_M:
 494                                 if (rm & 1) {
 495                                         pr_cont("xd%d", rm & ~1);
 496                                         break;
 497                                 }
 498                                 fallthrough;
 499                         case D_REG_M:
 500                                 pr_cont("dr%d", rm);
 501                                 break;
 502                         case FPSCR_M:
 503                         case FPSCR_N:
 504                                 pr_cont("fpscr");
 505                                 break;
 506                         case FPUL_M:
 507                         case FPUL_N:
 508                                 pr_cont("fpul");
 509                                 break;
 510                         case F_FR0:
 511                                 pr_cont("fr0");
 512                                 break;
 513                         case V_REG_N:
 514                                 pr_cont("fv%d", rn*4);
 515                                 break;
 516                         case V_REG_M:
 517                                 pr_cont("fv%d", rm*4);
 518                                 break;
 519                         case XMTRX_M4:
 520                                 pr_cont("xmtrx");
 521                                 break;
 522                         default:
 523                                 return;
 524                         }
 525                 }
 526
 527                 if (disp_pc && strcmp(op->name, "mova") != 0) {
 528                         u32 val;
 529
 530                         if (relmask == ~1)
 531                                 __get_user(val, (u16 *)disp_pc_addr);
 532                         else
 533                                 __get_user(val, (u32 *)disp_pc_addr);
 534
 535                         pr_cont("  ! %08x <%pS>", val, (void *)val);
 536                 }
 537
 538                 return;
 539         fail:
 540                 ;
 541
 542         }
 543
 544         pr_info(".word 0x%x%x%x%x", nibs[0], nibs[1], nibs[2], nibs[3]);
 545 }
 546
 547 void show_code(struct pt_regs *regs)
 548 {
 549         unsigned short *pc = (unsigned short *)regs->pc;
 550         long i;
 551
 552         if (regs->pc & 0x1)
 553                 return;
 554
 555         pr_info("Code:\n");
 556
 557         for (i = -3 ; i < 6 ; i++) {
 558                 unsigned short insn;
 559
 560                 if (__get_user(insn, pc + i)) {
 561                         pr_err(" (Bad address in pc)\n");
 562                         break;
 563                 }
 564
 565                 pr_info("%s%08lx:  ", (i ? "  " : "->"),
 566                         (unsigned long)(pc + i));
 567                 print_sh_insn((unsigned long)(pc + i), insn);
 568                 pr_cont("\n");
 569         }
 570
 571         pr_info("\n");
 572 }