arch/sh/kernel/disassemble.c

   1 /*
   2  * Disassemble SuperH instructions.
   3  *
   4  * Copyright (C) 1999 kaz Kojima
   5  * Copyright (C) 2008 Paul Mundt
   6  *
   7  * This file is subject to the terms and conditions of the GNU General Public
   8  * License.  See the file "COPYING" in the main directory of this archive
   9  * for more details.
  10  */
  11 #include <linux/kernel.h>
  12 #include <linux/string.h>
  13 #include <linux/uaccess.h>
  14
  15 /*
  16  * Format of an instruction in memory.
  17  */
  18 typedef enum {
  19         HEX_0, HEX_1, HEX_2, HEX_3, HEX_4, HEX_5, HEX_6, HEX_7,
  20         HEX_8, HEX_9, HEX_A, HEX_B, HEX_C, HEX_D, HEX_E, HEX_F,
  21         REG_N, REG_M, REG_NM, REG_B,
  22         BRANCH_12, BRANCH_8,
  23         DISP_8, DISP_4,
  24         IMM_4, IMM_4BY2, IMM_4BY4, PCRELIMM_8BY2, PCRELIMM_8BY4,
  25         IMM_8, IMM_8BY2, IMM_8BY4,
  26 } sh_nibble_type;
  27
  28 typedef enum {
  29         A_END, A_BDISP12, A_BDISP8,
  30         A_DEC_M, A_DEC_N,
  31         A_DISP_GBR, A_DISP_PC, A_DISP_REG_M, A_DISP_REG_N,
  32         A_GBR,
  33         A_IMM,
  34         A_INC_M, A_INC_N,
  35         A_IND_M, A_IND_N, A_IND_R0_REG_M, A_IND_R0_REG_N,
  36         A_MACH, A_MACL,
  37         A_PR, A_R0, A_R0_GBR, A_REG_M, A_REG_N, A_REG_B,
  38         A_SR, A_VBR, A_SSR, A_SPC, A_SGR, A_DBR,
  39         F_REG_N, F_REG_M, D_REG_N, D_REG_M,
  40         X_REG_N, /* Only used for argument parsing */
  41         X_REG_M, /* Only used for argument parsing */
  42         DX_REG_N, DX_REG_M, V_REG_N, V_REG_M,
  43         FD_REG_N,
  44         XMTRX_M4,
  45         F_FR0,
  46         FPUL_N, FPUL_M, FPSCR_N, FPSCR_M,
  47 } sh_arg_type;
  48
  49 static struct sh_opcode_info {
  50         char *name;
  51         sh_arg_type arg[7];
  52         sh_nibble_type nibbles[4];
  53 } sh_table[] = {
  54         {"add",{A_IMM,A_REG_N},{HEX_7,REG_N,IMM_8}},
  55         {"add",{ A_REG_M,A_REG_N},{HEX_3,REG_N,REG_M,HEX_C}},
  56         {"addc",{ A_REG_M,A_REG_N},{HEX_3,REG_N,REG_M,HEX_E}},
  57         {"addv",{ A_REG_M,A_REG_N},{HEX_3,REG_N,REG_M,HEX_F}},
  58         {"and",{A_IMM,A_R0},{HEX_C,HEX_9,IMM_8}},
  59         {"and",{ A_REG_M,A_REG_N},{HEX_2,REG_N,REG_M,HEX_9}},
  60         {"and.b",{A_IMM,A_R0_GBR},{HEX_C,HEX_D,IMM_8}},
  61         {"bra",{A_BDISP12},{HEX_A,BRANCH_12}},
  62         {"bsr",{A_BDISP12},{HEX_B,BRANCH_12}},
  63         {"bt",{A_BDISP8},{HEX_8,HEX_9,BRANCH_8}},
  64         {"bf",{A_BDISP8},{HEX_8,HEX_B,BRANCH_8}},
  65         {"bt.s",{A_BDISP8},{HEX_8,HEX_D,BRANCH_8}},
  66         {"bt/s",{A_BDISP8},{HEX_8,HEX_D,BRANCH_8}},
  67         {"bf.s",{A_BDISP8},{HEX_8,HEX_F,BRANCH_8}},
  68         {"bf/s",{A_BDISP8},{HEX_8,HEX_F,BRANCH_8}},
  69         {"clrmac",{0},{HEX_0,HEX_0,HEX_2,HEX_8}},
  70         {"clrs",{0},{HEX_0,HEX_0,HEX_4,HEX_8}},
  71         {"clrt",{0},{HEX_0,HEX_0,HEX_0,HEX_8}},
  72         {"cmp/eq",{A_IMM,A_R0},{HEX_8,HEX_8,IMM_8}},
  73         {"cmp/eq",{ A_REG_M,A_REG_N},{HEX_3,REG_N,REG_M,HEX_0}},
  74         {"cmp/ge",{ A_REG_M,A_REG_N},{HEX_3,REG_N,REG_M,HEX_3}},
  75         {"cmp/gt",{ A_REG_M,A_REG_N},{HEX_3,REG_N,REG_M,HEX_7}},
  76         {"cmp/hi",{ A_REG_M,A_REG_N},{HEX_3,REG_N,REG_M,HEX_6}},
  77         {"cmp/hs",{ A_REG_M,A_REG_N},{HEX_3,REG_N,REG_M,HEX_2}},
  78         {"cmp/pl",{A_REG_N},{HEX_4,REG_N,HEX_1,HEX_5}},
  79         {"cmp/pz",{A_REG_N},{HEX_4,REG_N,HEX_1,HEX_1}},
  80         {"cmp/str",{ A_REG_M,A_REG_N},{HEX_2,REG_N,REG_M,HEX_C}},
  81         {"div0s",{ A_REG_M,A_REG_N},{HEX_2,REG_N,REG_M,HEX_7}},
  82         {"div0u",{0},{HEX_0,HEX_0,HEX_1,HEX_9}},
  83         {"div1",{ A_REG_M,A_REG_N},{HEX_3,REG_N,REG_M,HEX_4}},
  84         {"exts.b",{ A_REG_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_E}},
  85         {"exts.w",{ A_REG_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_F}},
  86         {"extu.b",{ A_REG_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_C}},
  87         {"extu.w",{ A_REG_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_D}},
  88         {"jmp",{A_IND_N},{HEX_4,REG_N,HEX_2,HEX_B}},
  89         {"jsr",{A_IND_N},{HEX_4,REG_N,HEX_0,HEX_B}},
  90         {"ldc",{A_REG_N,A_SR},{HEX_4,REG_N,HEX_0,HEX_E}},
  91         {"ldc",{A_REG_N,A_GBR},{HEX_4,REG_N,HEX_1,HEX_E}},
  92         {"ldc",{A_REG_N,A_VBR},{HEX_4,REG_N,HEX_2,HEX_E}},
  93         {"ldc",{A_REG_N,A_SSR},{HEX_4,REG_N,HEX_3,HEX_E}},
  94         {"ldc",{A_REG_N,A_SPC},{HEX_4,REG_N,HEX_4,HEX_E}},
  95         {"ldc",{A_REG_N,A_DBR},{HEX_4,REG_N,HEX_7,HEX_E}},
  96         {"ldc",{A_REG_N,A_REG_B},{HEX_4,REG_N,REG_B,HEX_E}},
  97         {"ldc.l",{A_INC_N,A_SR},{HEX_4,REG_N,HEX_0,HEX_7}},
  98         {"ldc.l",{A_INC_N,A_GBR},{HEX_4,REG_N,HEX_1,HEX_7}},
  99         {"ldc.l",{A_INC_N,A_VBR},{HEX_4,REG_N,HEX_2,HEX_7}},
 100         {"ldc.l",{A_INC_N,A_SSR},{HEX_4,REG_N,HEX_3,HEX_7}},
 101         {"ldc.l",{A_INC_N,A_SPC},{HEX_4,REG_N,HEX_4,HEX_7}},
 102         {"ldc.l",{A_INC_N,A_DBR},{HEX_4,REG_N,HEX_7,HEX_7}},
 103         {"ldc.l",{A_INC_N,A_REG_B},{HEX_4,REG_N,REG_B,HEX_7}},
 104         {"lds",{A_REG_N,A_MACH},{HEX_4,REG_N,HEX_0,HEX_A}},
 105         {"lds",{A_REG_N,A_MACL},{HEX_4,REG_N,HEX_1,HEX_A}},
 106         {"lds",{A_REG_N,A_PR},{HEX_4,REG_N,HEX_2,HEX_A}},
 107         {"lds",{A_REG_M,FPUL_N},{HEX_4,REG_M,HEX_5,HEX_A}},
 108         {"lds",{A_REG_M,FPSCR_N},{HEX_4,REG_M,HEX_6,HEX_A}},
 109         {"lds.l",{A_INC_N,A_MACH},{HEX_4,REG_N,HEX_0,HEX_6}},
 110         {"lds.l",{A_INC_N,A_MACL},{HEX_4,REG_N,HEX_1,HEX_6}},
 111         {"lds.l",{A_INC_N,A_PR},{HEX_4,REG_N,HEX_2,HEX_6}},
 112         {"lds.l",{A_INC_M,FPUL_N},{HEX_4,REG_M,HEX_5,HEX_6}},
 113         {"lds.l",{A_INC_M,FPSCR_N},{HEX_4,REG_M,HEX_6,HEX_6}},
 114         {"ldtlb",{0},{HEX_0,HEX_0,HEX_3,HEX_8}},
 115         {"mac.w",{A_INC_M,A_INC_N},{HEX_4,REG_N,REG_M,HEX_F}},
 116         {"mov",{A_IMM,A_REG_N},{HEX_E,REG_N,IMM_8}},
 117         {"mov",{ A_REG_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_3}},
 118         {"mov.b",{ A_REG_M,A_IND_R0_REG_N},{HEX_0,REG_N,REG_M,HEX_4}},
 119         {"mov.b",{ A_REG_M,A_DEC_N},{HEX_2,REG_N,REG_M,HEX_4}},
 120         {"mov.b",{ A_REG_M,A_IND_N},{HEX_2,REG_N,REG_M,HEX_0}},
 121         {"mov.b",{A_DISP_REG_M,A_R0},{HEX_8,HEX_4,REG_M,IMM_4}},
 122         {"mov.b",{A_DISP_GBR,A_R0},{HEX_C,HEX_4,IMM_8}},
 123         {"mov.b",{A_IND_R0_REG_M,A_REG_N},{HEX_0,REG_N,REG_M,HEX_C}},
 124         {"mov.b",{A_INC_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_4}},
 125         {"mov.b",{A_IND_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_0}},
 126         {"mov.b",{A_R0,A_DISP_REG_M},{HEX_8,HEX_0,REG_M,IMM_4}},
 127         {"mov.b",{A_R0,A_DISP_GBR},{HEX_C,HEX_0,IMM_8}},
 128         {"mov.l",{ A_REG_M,A_DISP_REG_N},{HEX_1,REG_N,REG_M,IMM_4BY4}},
 129         {"mov.l",{ A_REG_M,A_IND_R0_REG_N},{HEX_0,REG_N,REG_M,HEX_6}},
 130         {"mov.l",{ A_REG_M,A_DEC_N},{HEX_2,REG_N,REG_M,HEX_6}},
 131         {"mov.l",{ A_REG_M,A_IND_N},{HEX_2,REG_N,REG_M,HEX_2}},
 132         {"mov.l",{A_DISP_REG_M,A_REG_N},{HEX_5,REG_N,REG_M,IMM_4BY4}},
 133         {"mov.l",{A_DISP_GBR,A_R0},{HEX_C,HEX_6,IMM_8BY4}},
 134         {"mov.l",{A_DISP_PC,A_REG_N},{HEX_D,REG_N,PCRELIMM_8BY4}},
 135         {"mov.l",{A_IND_R0_REG_M,A_REG_N},{HEX_0,REG_N,REG_M,HEX_E}},
 136         {"mov.l",{A_INC_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_6}},
 137         {"mov.l",{A_IND_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_2}},
 138         {"mov.l",{A_R0,A_DISP_GBR},{HEX_C,HEX_2,IMM_8BY4}},
 139         {"mov.w",{ A_REG_M,A_IND_R0_REG_N},{HEX_0,REG_N,REG_M,HEX_5}},
 140         {"mov.w",{ A_REG_M,A_DEC_N},{HEX_2,REG_N,REG_M,HEX_5}},
 141         {"mov.w",{ A_REG_M,A_IND_N},{HEX_2,REG_N,REG_M,HEX_1}},
 142         {"mov.w",{A_DISP_REG_M,A_R0},{HEX_8,HEX_5,REG_M,IMM_4BY2}},
 143         {"mov.w",{A_DISP_GBR,A_R0},{HEX_C,HEX_5,IMM_8BY2}},
 144         {"mov.w",{A_DISP_PC,A_REG_N},{HEX_9,REG_N,PCRELIMM_8BY2}},
 145         {"mov.w",{A_IND_R0_REG_M,A_REG_N},{HEX_0,REG_N,REG_M,HEX_D}},
 146         {"mov.w",{A_INC_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_5}},
 147         {"mov.w",{A_IND_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_1}},
 148         {"mov.w",{A_R0,A_DISP_REG_M},{HEX_8,HEX_1,REG_M,IMM_4BY2}},
 149         {"mov.w",{A_R0,A_DISP_GBR},{HEX_C,HEX_1,IMM_8BY2}},
 150         {"mova",{A_DISP_PC,A_R0},{HEX_C,HEX_7,PCRELIMM_8BY4}},
 151         {"movca.l",{A_R0,A_IND_N},{HEX_0,REG_N,HEX_C,HEX_3}},
 152         {"movt",{A_REG_N},{HEX_0,REG_N,HEX_2,HEX_9}},
 153         {"muls",{ A_REG_M,A_REG_N},{HEX_2,REG_N,REG_M,HEX_F}},
 154         {"mul.l",{ A_REG_M,A_REG_N},{HEX_0,REG_N,REG_M,HEX_7}},
 155         {"mulu",{ A_REG_M,A_REG_N},{HEX_2,REG_N,REG_M,HEX_E}},
 156         {"neg",{ A_REG_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_B}},
 157         {"negc",{ A_REG_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_A}},
 158         {"nop",{0},{HEX_0,HEX_0,HEX_0,HEX_9}},
 159         {"not",{ A_REG_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_7}},
 160         {"ocbi",{A_IND_N},{HEX_0,REG_N,HEX_9,HEX_3}},
 161         {"ocbp",{A_IND_N},{HEX_0,REG_N,HEX_A,HEX_3}},
 162         {"ocbwb",{A_IND_N},{HEX_0,REG_N,HEX_B,HEX_3}},
 163         {"or",{A_IMM,A_R0},{HEX_C,HEX_B,IMM_8}},
 164         {"or",{ A_REG_M,A_REG_N},{HEX_2,REG_N,REG_M,HEX_B}},
 165         {"or.b",{A_IMM,A_R0_GBR},{HEX_C,HEX_F,IMM_8}},
 166         {"pref",{A_IND_N},{HEX_0,REG_N,HEX_8,HEX_3}},
 167         {"rotcl",{A_REG_N},{HEX_4,REG_N,HEX_2,HEX_4}},
 168         {"rotcr",{A_REG_N},{HEX_4,REG_N,HEX_2,HEX_5}},
 169         {"rotl",{A_REG_N},{HEX_4,REG_N,HEX_0,HEX_4}},
 170         {"rotr",{A_REG_N},{HEX_4,REG_N,HEX_0,HEX_5}},
 171         {"rte",{0},{HEX_0,HEX_0,HEX_2,HEX_B}},
 172         {"rts",{0},{HEX_0,HEX_0,HEX_0,HEX_B}},
 173         {"sets",{0},{HEX_0,HEX_0,HEX_5,HEX_8}},
 174         {"sett",{0},{HEX_0,HEX_0,HEX_1,HEX_8}},
 175         {"shad",{ A_REG_M,A_REG_N},{HEX_4,REG_N,REG_M,HEX_C}},
 176         {"shld",{ A_REG_M,A_REG_N},{HEX_4,REG_N,REG_M,HEX_D}},
 177         {"shal",{A_REG_N},{HEX_4,REG_N,HEX_2,HEX_0}},
 178         {"shar",{A_REG_N},{HEX_4,REG_N,HEX_2,HEX_1}},
 179         {"shll",{A_REG_N},{HEX_4,REG_N,HEX_0,HEX_0}},
 180         {"shll16",{A_REG_N},{HEX_4,REG_N,HEX_2,HEX_8}},
 181         {"shll2",{A_REG_N},{HEX_4,REG_N,HEX_0,HEX_8}},
 182         {"shll8",{A_REG_N},{HEX_4,REG_N,HEX_1,HEX_8}},
 183         {"shlr",{A_REG_N},{HEX_4,REG_N,HEX_0,HEX_1}},
 184         {"shlr16",{A_REG_N},{HEX_4,REG_N,HEX_2,HEX_9}},
 185         {"shlr2",{A_REG_N},{HEX_4,REG_N,HEX_0,HEX_9}},
 186         {"shlr8",{A_REG_N},{HEX_4,REG_N,HEX_1,HEX_9}},
 187         {"sleep",{0},{HEX_0,HEX_0,HEX_1,HEX_B}},
 188         {"stc",{A_SR,A_REG_N},{HEX_0,REG_N,HEX_0,HEX_2}},
 189         {"stc",{A_GBR,A_REG_N},{HEX_0,REG_N,HEX_1,HEX_2}},
 190         {"stc",{A_VBR,A_REG_N},{HEX_0,REG_N,HEX_2,HEX_2}},
 191         {"stc",{A_SSR,A_REG_N},{HEX_0,REG_N,HEX_3,HEX_2}},
 192         {"stc",{A_SPC,A_REG_N},{HEX_0,REG_N,HEX_4,HEX_2}},
 193         {"stc",{A_SGR,A_REG_N},{HEX_0,REG_N,HEX_6,HEX_2}},
 194         {"stc",{A_DBR,A_REG_N},{HEX_0,REG_N,HEX_7,HEX_2}},
 195         {"stc",{A_REG_B,A_REG_N},{HEX_0,REG_N,REG_B,HEX_2}},
 196         {"stc.l",{A_SR,A_DEC_N},{HEX_4,REG_N,HEX_0,HEX_3}},
 197         {"stc.l",{A_GBR,A_DEC_N},{HEX_4,REG_N,HEX_1,HEX_3}},
 198         {"stc.l",{A_VBR,A_DEC_N},{HEX_4,REG_N,HEX_2,HEX_3}},
 199         {"stc.l",{A_SSR,A_DEC_N},{HEX_4,REG_N,HEX_3,HEX_3}},
 200         {"stc.l",{A_SPC,A_DEC_N},{HEX_4,REG_N,HEX_4,HEX_3}},
 201         {"stc.l",{A_SGR,A_DEC_N},{HEX_4,REG_N,HEX_6,HEX_3}},
 202         {"stc.l",{A_DBR,A_DEC_N},{HEX_4,REG_N,HEX_7,HEX_3}},
 203         {"stc.l",{A_REG_B,A_DEC_N},{HEX_4,REG_N,REG_B,HEX_3}},
 204         {"sts",{A_MACH,A_REG_N},{HEX_0,REG_N,HEX_0,HEX_A}},
 205         {"sts",{A_MACL,A_REG_N},{HEX_0,REG_N,HEX_1,HEX_A}},
 206         {"sts",{A_PR,A_REG_N},{HEX_0,REG_N,HEX_2,HEX_A}},
 207         {"sts",{FPUL_M,A_REG_N},{HEX_0,REG_N,HEX_5,HEX_A}},
 208         {"sts",{FPSCR_M,A_REG_N},{HEX_0,REG_N,HEX_6,HEX_A}},
 209         {"sts.l",{A_MACH,A_DEC_N},{HEX_4,REG_N,HEX_0,HEX_2}},
 210         {"sts.l",{A_MACL,A_DEC_N},{HEX_4,REG_N,HEX_1,HEX_2}},
 211         {"sts.l",{A_PR,A_DEC_N},{HEX_4,REG_N,HEX_2,HEX_2}},
 212         {"sts.l",{FPUL_M,A_DEC_N},{HEX_4,REG_N,HEX_5,HEX_2}},
 213         {"sts.l",{FPSCR_M,A_DEC_N},{HEX_4,REG_N,HEX_6,HEX_2}},
 214         {"sub",{ A_REG_M,A_REG_N},{HEX_3,REG_N,REG_M,HEX_8}},
 215         {"subc",{ A_REG_M,A_REG_N},{HEX_3,REG_N,REG_M,HEX_A}},
 216         {"subv",{ A_REG_M,A_REG_N},{HEX_3,REG_N,REG_M,HEX_B}},
 217         {"swap.b",{ A_REG_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_8}},
 218         {"swap.w",{ A_REG_M,A_REG_N},{HEX_6,REG_N,REG_M,HEX_9}},
 219         {"tas.b",{A_IND_N},{HEX_4,REG_N,HEX_1,HEX_B}},
 220         {"trapa",{A_IMM},{HEX_C,HEX_3,IMM_8}},
 221         {"tst",{A_IMM,A_R0},{HEX_C,HEX_8,IMM_8}},
 222         {"tst",{ A_REG_M,A_REG_N},{HEX_2,REG_N,REG_M,HEX_8}},
 223         {"tst.b",{A_IMM,A_R0_GBR},{HEX_C,HEX_C,IMM_8}},
 224         {"xor",{A_IMM,A_R0},{HEX_C,HEX_A,IMM_8}},
 225         {"xor",{ A_REG_M,A_REG_N},{HEX_2,REG_N,REG_M,HEX_A}},
 226         {"xor.b",{A_IMM,A_R0_GBR},{HEX_C,HEX_E,IMM_8}},
 227         {"xtrct",{ A_REG_M,A_REG_N},{HEX_2,REG_N,REG_M,HEX_D}},
 228         {"mul.l",{ A_REG_M,A_REG_N},{HEX_0,REG_N,REG_M,HEX_7}},
 229         {"dt",{A_REG_N},{HEX_4,REG_N,HEX_1,HEX_0}},
 230         {"dmuls.l",{ A_REG_M,A_REG_N},{HEX_3,REG_N,REG_M,HEX_D}},
 231         {"dmulu.l",{ A_REG_M,A_REG_N},{HEX_3,REG_N,REG_M,HEX_5}},
 232         {"mac.l",{A_INC_M,A_INC_N},{HEX_0,REG_N,REG_M,HEX_F}},
 233         {"braf",{A_REG_N},{HEX_0,REG_N,HEX_2,HEX_3}},
 234         {"bsrf",{A_REG_N},{HEX_0,REG_N,HEX_0,HEX_3}},
 235         {"fabs",{FD_REG_N},{HEX_F,REG_N,HEX_5,HEX_D}},
 236         {"fadd",{F_REG_M,F_REG_N},{HEX_F,REG_N,REG_M,HEX_0}},
 237         {"fadd",{D_REG_M,D_REG_N},{HEX_F,REG_N,REG_M,HEX_0}},
 238         {"fcmp/eq",{F_REG_M,F_REG_N},{HEX_F,REG_N,REG_M,HEX_4}},
 239         {"fcmp/eq",{D_REG_M,D_REG_N},{HEX_F,REG_N,REG_M,HEX_4}},
 240         {"fcmp/gt",{F_REG_M,F_REG_N},{HEX_F,REG_N,REG_M,HEX_5}},
 241         {"fcmp/gt",{D_REG_M,D_REG_N},{HEX_F,REG_N,REG_M,HEX_5}},
 242         {"fcnvds",{D_REG_N,FPUL_M},{HEX_F,REG_N,HEX_B,HEX_D}},
 243         {"fcnvsd",{FPUL_M,D_REG_N},{HEX_F,REG_N,HEX_A,HEX_D}},
 244         {"fdiv",{F_REG_M,F_REG_N},{HEX_F,REG_N,REG_M,HEX_3}},
 245         {"fdiv",{D_REG_M,D_REG_N},{HEX_F,REG_N,REG_M,HEX_3}},
 246         {"fipr",{V_REG_M,V_REG_N},{HEX_F,REG_NM,HEX_E,HEX_D}},
 247         {"fldi0",{F_REG_N},{HEX_F,REG_N,HEX_8,HEX_D}},
 248         {"fldi1",{F_REG_N},{HEX_F,REG_N,HEX_9,HEX_D}},
 249         {"flds",{F_REG_N,FPUL_M},{HEX_F,REG_N,HEX_1,HEX_D}},
 250         {"float",{FPUL_M,FD_REG_N},{HEX_F,REG_N,HEX_2,HEX_D}},
 251         {"fmac",{F_FR0,F_REG_M,F_REG_N},{HEX_F,REG_N,REG_M,HEX_E}},
 252         {"fmov",{F_REG_M,F_REG_N},{HEX_F,REG_N,REG_M,HEX_C}},
 253         {"fmov",{DX_REG_M,DX_REG_N},{HEX_F,REG_N,REG_M,HEX_C}},
 254         {"fmov",{A_IND_M,F_REG_N},{HEX_F,REG_N,REG_M,HEX_8}},
 255         {"fmov",{A_IND_M,DX_REG_N},{HEX_F,REG_N,REG_M,HEX_8}},
 256         {"fmov",{F_REG_M,A_IND_N},{HEX_F,REG_N,REG_M,HEX_A}},
 257         {"fmov",{DX_REG_M,A_IND_N},{HEX_F,REG_N,REG_M,HEX_A}},
 258         {"fmov",{A_INC_M,F_REG_N},{HEX_F,REG_N,REG_M,HEX_9}},
 259         {"fmov",{A_INC_M,DX_REG_N},{HEX_F,REG_N,REG_M,HEX_9}},
 260         {"fmov",{F_REG_M,A_DEC_N},{HEX_F,REG_N,REG_M,HEX_B}},
 261         {"fmov",{DX_REG_M,A_DEC_N},{HEX_F,REG_N,REG_M,HEX_B}},
 262         {"fmov",{A_IND_R0_REG_M,F_REG_N},{HEX_F,REG_N,REG_M,HEX_6}},
 263         {"fmov",{A_IND_R0_REG_M,DX_REG_N},{HEX_F,REG_N,REG_M,HEX_6}},
 264         {"fmov",{F_REG_M,A_IND_R0_REG_N},{HEX_F,REG_N,REG_M,HEX_7}},
 265         {"fmov",{DX_REG_M,A_IND_R0_REG_N},{HEX_F,REG_N,REG_M,HEX_7}},
 266         {"fmov.d",{A_IND_M,DX_REG_N},{HEX_F,REG_N,REG_M,HEX_8}},
 267         {"fmov.d",{DX_REG_M,A_IND_N},{HEX_F,REG_N,REG_M,HEX_A}},
 268         {"fmov.d",{A_INC_M,DX_REG_N},{HEX_F,REG_N,REG_M,HEX_9}},
 269         {"fmov.d",{DX_REG_M,A_DEC_N},{HEX_F,REG_N,REG_M,HEX_B}},
 270         {"fmov.d",{A_IND_R0_REG_M,DX_REG_N},{HEX_F,REG_N,REG_M,HEX_6}},
 271         {"fmov.d",{DX_REG_M,A_IND_R0_REG_N},{HEX_F,REG_N,REG_M,HEX_7}},
 272         {"fmov.s",{A_IND_M,F_REG_N},{HEX_F,REG_N,REG_M,HEX_8}},
 273         {"fmov.s",{F_REG_M,A_IND_N},{HEX_F,REG_N,REG_M,HEX_A}},
 274         {"fmov.s",{A_INC_M,F_REG_N},{HEX_F,REG_N,REG_M,HEX_9}},
 275         {"fmov.s",{F_REG_M,A_DEC_N},{HEX_F,REG_N,REG_M,HEX_B}},
 276         {"fmov.s",{A_IND_R0_REG_M,F_REG_N},{HEX_F,REG_N,REG_M,HEX_6}},
 277         {"fmov.s",{F_REG_M,A_IND_R0_REG_N},{HEX_F,REG_N,REG_M,HEX_7}},
 278         {"fmul",{F_REG_M,F_REG_N},{HEX_F,REG_N,REG_M,HEX_2}},
 279         {"fmul",{D_REG_M,D_REG_N},{HEX_F,REG_N,REG_M,HEX_2}},
 280         {"fneg",{FD_REG_N},{HEX_F,REG_N,HEX_4,HEX_D}},
 281         {"frchg",{0},{HEX_F,HEX_B,HEX_F,HEX_D}},
 282         {"fschg",{0},{HEX_F,HEX_3,HEX_F,HEX_D}},
 283         {"fsqrt",{FD_REG_N},{HEX_F,REG_N,HEX_6,HEX_D}},
 284         {"fsts",{FPUL_M,F_REG_N},{HEX_F,REG_N,HEX_0,HEX_D}},
 285         {"fsub",{F_REG_M,F_REG_N},{HEX_F,REG_N,REG_M,HEX_1}},
 286         {"fsub",{D_REG_M,D_REG_N},{HEX_F,REG_N,REG_M,HEX_1}},
 287         {"ftrc",{FD_REG_N,FPUL_M},{HEX_F,REG_N,HEX_3,HEX_D}},
 288         {"ftrv",{XMTRX_M4,V_REG_N},{HEX_F,REG_NM,HEX_F,HEX_D}},
 289         { 0 },
 290 };
 291
 292 static void print_sh_insn(u32 memaddr, u16 insn)
 293 {
 294         int relmask = ~0;
 295         int nibs[4] = { (insn >> 12) & 0xf, (insn >> 8) & 0xf, (insn >> 4) & 0xf, insn & 0xf};
 296         int lastsp;
 297         struct sh_opcode_info *op = sh_table;
 298
 299         for (; op->name; op++) {
 300                 int n;
 301                 int imm = 0;
 302                 int rn = 0;
 303                 int rm = 0;
 304                 int rb = 0;
 305                 int disp_pc;
 306                 int disp_pc_addr = 0;
 307
 308                 for (n = 0; n < 4; n++) {
 309                         int i = op->nibbles[n];
 310
 311                         if (i < 16) {
 312                                 if (nibs[n] == i)
 313                                         continue;
 314                                 goto fail;
 315                         }
 316                         switch (i) {
 317                         case BRANCH_8:
 318                                 imm = (nibs[2] << 4) | (nibs[3]);
 319                                 if (imm & 0x80)
 320                                         imm |= ~0xff;
 321                                 imm = ((char)imm) * 2 + 4 ;
 322                                 goto ok;
 323                         case BRANCH_12:
 324                                 imm = ((nibs[1]) << 8) | (nibs[2] << 4) | (nibs[3]);
 325                                 if (imm & 0x800)
 326                                         imm |= ~0xfff;
 327                                 imm = imm * 2 + 4;
 328                                 goto ok;
 329                         case IMM_4:
 330                                 imm = nibs[3];
 331                                 goto ok;
 332                         case IMM_4BY2:
 333                                 imm = nibs[3] <<1;
 334                                 goto ok;
 335                         case IMM_4BY4:
 336                                 imm = nibs[3] <<2;
 337                                 goto ok;
 338                         case IMM_8:
 339                                 imm = (nibs[2] << 4) | nibs[3];
 340                                 goto ok;
 341                         case PCRELIMM_8BY2:
 342                                 imm = ((nibs[2] << 4) | nibs[3]) <<1;
 343                                 relmask = ~1;
 344                                 goto ok;
 345                         case PCRELIMM_8BY4:
 346                                 imm = ((nibs[2] << 4) | nibs[3]) <<2;
 347                                 relmask = ~3;
 348                                 goto ok;
 349                         case IMM_8BY2:
 350                                 imm = ((nibs[2] << 4) | nibs[3]) <<1;
 351                                 goto ok;
 352                         case IMM_8BY4:
 353                                 imm = ((nibs[2] << 4) | nibs[3]) <<2;
 354                                 goto ok;
 355                         case DISP_8:
 356                                 imm = (nibs[2] << 4) | (nibs[3]);
 357                                 goto ok;
 358                         case DISP_4:
 359                                 imm = nibs[3];
 360                                 goto ok;
 361                         case REG_N:
 362                                 rn = nibs[n];
 363                                 break;
 364                         case REG_M:
 365                                 rm = nibs[n];
 366                                 break;
 367                         case REG_NM:
 368                                 rn = (nibs[n] & 0xc) >> 2;
 369                                 rm = (nibs[n] & 0x3);
 370                                 break;
 371                         case REG_B:
 372                                 rb = nibs[n] & 0x07;
 373                                 break;
 374                         default:
 375                                 return;
 376                         }
 377                 }
 378
 379         ok:
 380                 printk("%-8s  ", op->name);
 381                 lastsp = (op->arg[0] == A_END);
 382                 disp_pc = 0;
 383                 for (n = 0; n < 6 && op->arg[n] != A_END; n++) {
 384                         if (n && op->arg[1] != A_END)
 385                                 printk(", ");
 386                         switch (op->arg[n]) {
 387                         case A_IMM:
 388                                 printk("#%d", (char)(imm));
 389                                 break;
 390                         case A_R0:
 391                                 printk("r0");
 392                                 break;
 393                         case A_REG_N:
 394                                 printk("r%d", rn);
 395                                 break;
 396                         case A_INC_N:
 397                                 printk("@r%d+", rn);
 398                                 break;
 399                         case A_DEC_N:
 400                                 printk("@-r%d", rn);
 401                                 break;
 402                         case A_IND_N:
 403                                 printk("@r%d", rn);
 404                                 break;
 405                         case A_DISP_REG_N:
 406                                 printk("@(%d,r%d)", imm, rn);
 407                                 break;
 408                         case A_REG_M:
 409                                 printk("r%d", rm);
 410                                 break;
 411                         case A_INC_M:
 412                                 printk("@r%d+", rm);
 413                                 break;
 414                         case A_DEC_M:
 415                                 printk("@-r%d", rm);
 416                                 break;
 417                         case A_IND_M:
 418                                 printk("@r%d", rm);
 419                                 break;
 420                         case A_DISP_REG_M:
 421                                 printk("@(%d,r%d)", imm, rm);
 422                                 break;
 423                         case A_REG_B:
 424                                 printk("r%d_bank", rb);
 425                                 break;
 426                         case A_DISP_PC:
 427                                 disp_pc = 1;
 428                                 disp_pc_addr = imm + 4 + (memaddr & relmask);
 429                                 printk("%08x <%pS>", disp_pc_addr,
 430                                        (void *)disp_pc_addr);
 431                                 break;
 432                         case A_IND_R0_REG_N:
 433                                 printk("@(r0,r%d)", rn);
 434                                 break;
 435                         case A_IND_R0_REG_M:
 436                                 printk("@(r0,r%d)", rm);
 437                                 break;
 438                         case A_DISP_GBR:
 439                                 printk("@(%d,gbr)",imm);
 440                                 break;
 441                         case A_R0_GBR:
 442                                 printk("@(r0,gbr)");
 443                                 break;
 444                         case A_BDISP12:
 445                         case A_BDISP8:
 446                                 printk("%08x", imm + memaddr);
 447                                 break;
 448                         case A_SR:
 449                                 printk("sr");
 450                                 break;
 451                         case A_GBR:
 452                                 printk("gbr");
 453                                 break;
 454                         case A_VBR:
 455                                 printk("vbr");
 456                                 break;
 457                         case A_SSR:
 458                                 printk("ssr");
 459                                 break;
 460                         case A_SPC:
 461                                 printk("spc");
 462                                 break;
 463                         case A_MACH:
 464                                 printk("mach");
 465                                 break;
 466                         case A_MACL:
 467                                 printk("macl");
 468                                 break;
 469                         case A_PR:
 470                                 printk("pr");
 471                                 break;
 472                         case A_SGR:
 473                                 printk("sgr");
 474                                 break;
 475                         case A_DBR:
 476                                 printk("dbr");
 477                                 break;
 478                         case FD_REG_N:
 479                                 if (0)
 480                                         goto d_reg_n;
 481                         case F_REG_N:
 482                                 printk("fr%d", rn);
 483                                 break;
 484                         case F_REG_M:
 485                                 printk("fr%d", rm);
 486                                 break;
 487                         case DX_REG_N:
 488                                 if (rn & 1) {
 489                                         printk("xd%d", rn & ~1);
 490                                         break;
 491                                 }
 492                         d_reg_n:
 493                         case D_REG_N:
 494                                 printk("dr%d", rn);
 495                                 break;
 496                         case DX_REG_M:
 497                                 if (rm & 1) {
 498                                         printk("xd%d", rm & ~1);
 499                                         break;
 500                                 }
 501                         case D_REG_M:
 502                                 printk("dr%d", rm);
 503                                 break;
 504                         case FPSCR_M:
 505                         case FPSCR_N:
 506                                 printk("fpscr");
 507                                 break;
 508                         case FPUL_M:
 509                         case FPUL_N:
 510                                 printk("fpul");
 511                                 break;
 512                         case F_FR0:
 513                                 printk("fr0");
 514                                 break;
 515                         case V_REG_N:
 516                                 printk("fv%d", rn*4);
 517                                 break;
 518                         case V_REG_M:
 519                                 printk("fv%d", rm*4);
 520                                 break;
 521                         case XMTRX_M4:
 522                                 printk("xmtrx");
 523                                 break;
 524                         default:
 525                                 return;
 526                         }
 527                 }
 528
 529                 if (disp_pc && strcmp(op->name, "mova") != 0) {
 530                         u32 val;
 531
 532                         if (relmask == ~1)
 533                                 __get_user(val, (u16 *)disp_pc_addr);
 534                         else
 535                                 __get_user(val, (u32 *)disp_pc_addr);
 536
 537                         printk("  ! %08x <%pS>", val, (void *)val);
 538                 }
 539
 540                 return;
 541         fail:
 542                 ;
 543
 544         }
 545
 546         printk(".word 0x%x%x%x%x", nibs[0], nibs[1], nibs[2], nibs[3]);
 547 }
 548
 549 void show_code(struct pt_regs *regs)
 550 {
 551         unsigned short *pc = (unsigned short *)regs->pc;
 552         long i;
 553
 554         if (regs->pc & 0x1)
 555                 return;
 556
 557         printk("Code:\n");
 558
 559         for (i = -3 ; i < 6 ; i++) {
 560                 unsigned short insn;
 561
 562                 if (__get_user(insn, pc + i)) {
 563                         printk(" (Bad address in pc)\n");
 564                         break;
 565                 }
 566
 567                 printk("%s%08lx:  ", (i ? "  ": "->"), (unsigned long)(pc + i));
 568                 print_sh_insn((unsigned long)(pc + i), insn);
 569                 printk("\n");
 570         }
 571
 572         printk("\n");
 573 }