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annotate arm7dis/armdis.c @ 92:708f2452d1ae

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armdis: full ldr/str decoding implemented
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Sun, 30 Mar 2014 01:47:28 +0000
parents daf69d5edb3f
children 5ebebbc74622
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #include <sys/types.h>
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2 #include <stdio.h>
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3 #include <stdlib.h>
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4 #include <string.h>
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5 #include <strings.h>
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6
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7 extern char *binfilename;
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8 extern u_char *filemap;
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9 extern unsigned disasm_len, base_vma;
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10
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11 extern unsigned get_u16(), get_u32();
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12
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13 extern char *regnames[16], *condition_decode[16];
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14
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15 static char *dataproc_ops[16] = {"and", "eor", "sub", "rsb",
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16 "add", "adc", "sbc", "rsc",
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17 "tst", "teq", "cmp", "cmn",
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18 "orr", "mov", "bic", "mvn"};
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19 static char *shift_types[4] = {"lsl", "lsr", "asr", "ror"};
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20
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21 static void
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22 arm_branch(off, word)
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23 unsigned off, word;
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24 {
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25 unsigned dest;
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26
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27 dest = (word & 0x00FFFFFF) << 2;
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28 if (dest & 0x02000000)
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29 dest |= 0xFC000000;
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30 dest += base_vma + off + 8;
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31 printf("b%s%s\t0x%x\n", word&0x1000000 ? "l" : "",
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32 condition_decode[word>>28], dest);
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33 }
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34
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35 static void
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36 op2_immed(word)
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37 unsigned word;
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38 {
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39 unsigned low8, rot, val;
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40
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41 low8 = word & 0xFF;
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42 rot = (word & 0xF00) >> 7;
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43 val = (low8 << (32 - rot)) | (low8 >> rot);
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44 if (val <= 9)
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45 printf("#%u\n", val);
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46 else
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47 printf("#%u\t; 0x%x\n", val, val);
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48 }
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49
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50 static void
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51 op2_regbyconst(word)
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52 unsigned word;
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53 {
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54 unsigned c, t;
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55
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56 c = (word >> 7) & 0x1F;
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57 t = (word >> 5) & 3;
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58 if (!c) {
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59 switch (t) {
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60 case 0:
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61 printf("%s", regnames[word&0xF]);
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62 return;
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63 case 3:
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64 printf("%s, rrx", regnames[word&0xF]);
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65 return;
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66 default:
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67 c = 32;
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68 }
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69 }
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70 printf("%s, %s #%u", regnames[word&0xF], shift_types[t], c);
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71 }
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72
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73 static void
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74 op2_regbyreg(word)
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75 unsigned word;
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76 {
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77 printf("%s, %s %s", regnames[word&0xF], shift_types[(word>>5)&3],
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78 regnames[(word>>8)&0xF]);
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79 }
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80
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81 static void
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82 op2_regshift(word)
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83 unsigned word;
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84 {
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85 if (word & 0x10)
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86 op2_regbyreg(word);
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87 else
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88 op2_regbyconst(word);
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89 putchar('\n');
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90 }
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91
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92 static void
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93 dataproc_op2(word)
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94 unsigned word;
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95 {
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96 if (word & 0x02000000)
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97 op2_immed(word);
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98 else
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99 op2_regshift(word);
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100 }
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101
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102 static void
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103 dataproc_tstcmp_overlay(word)
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104 unsigned word;
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105 {
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106 char msrmask[5], *cp;
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107
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108 if ((word & 0x0FFFFFF0) == 0x012FFF10) {
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109 printf("bx%s\t%s\n", condition_decode[word>>28],
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110 regnames[word&0xF]);
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111 return;
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112 } else if ((word & 0x0FBF0FFF) == 0x010F0000) {
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113 printf("mrs%s\t%s, %cPSR\n", condition_decode[word>>28],
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114 regnames[(word>>12)&0xF], word&0x400000 ? 'S' : 'C');
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115 return;
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116 } else if ((word & 0x0DB0F000) == 0x0120F000) {
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117 if (!(word & 0x02000000) && (word & 0xFF0)) {
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118 printf("<invalid MSR>\n");
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119 return;
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120 }
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121 if (word & 0xF0000) {
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122 cp = msrmask;
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123 if (word & 0x80000)
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124 *cp++ = 'f';
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125 if (word & 0x40000)
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126 *cp++ = 's';
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127 if (word & 0x20000)
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128 *cp++ = 'x';
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129 if (word & 0x10000)
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130 *cp++ = 'c';
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131 *cp = '\0';
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132 } else
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133 strcpy(msrmask, "null");
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134 printf("msr%s\t%cPSR_%s, ", condition_decode[word>>28],
c5d52666d2eb armdis: BX/MRS/MSR decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 88
diff changeset
135 word&0x400000 ? 'S' : 'C', msrmask);
c5d52666d2eb armdis: BX/MRS/MSR decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 88
diff changeset
136 dataproc_op2(word);
c5d52666d2eb armdis: BX/MRS/MSR decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 88
diff changeset
137 return;
c5d52666d2eb armdis: BX/MRS/MSR decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 88
diff changeset
138 }
c5d52666d2eb armdis: BX/MRS/MSR decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 88
diff changeset
139 printf("<invalid BX/MRS/MSR>\n");
88
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
140 }
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
141
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
142 static void
90
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
143 dataproc(word)
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
144 unsigned word;
88
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
145 {
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
146 unsigned opc;
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
147
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
148 opc = (word >> 21) & 0xF;
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
149 switch (opc) {
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
150 case 0:
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
151 case 1:
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
152 case 2:
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
153 case 3:
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
154 case 4:
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
155 case 5:
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
156 case 6:
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
157 case 7:
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
158 case 0xC:
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
159 case 0xE:
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
160 printf("%s%s%s\t%s, %s, ", dataproc_ops[opc],
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
161 condition_decode[word>>28], word&0x100000 ? "s" : "",
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
162 regnames[(word>>12)&0xF], regnames[(word>>16)&0xF]);
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
163 dataproc_op2(word);
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
164 return;
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
165 case 0xD:
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
166 case 0xF:
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
167 printf("%s%s%s\t%s, ", dataproc_ops[opc],
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
168 condition_decode[word>>28], word&0x100000 ? "s" : "",
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
169 regnames[(word>>12)&0xF]);
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
170 dataproc_op2(word);
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
171 return;
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
172 case 8:
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
173 case 9:
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
174 case 0xA:
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
175 case 0xB:
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
176 if (word & 0x100000) {
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
177 printf("%s%s\t%s, ", dataproc_ops[opc],
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
178 condition_decode[word>>28],
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
179 regnames[(word>>16)&0xF]);
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
180 dataproc_op2(word);
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
181 } else
90
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
182 dataproc_tstcmp_overlay(word);
88
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
183 return;
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
184 }
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
185 }
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
186
90
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
187 static void
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
188 multiply(word)
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
189 unsigned word;
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
190 {
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
191 if ((word & 0x0FE000F0) == 0x90)
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
192 printf("mul%s%s\t%s, %s, %s\n", condition_decode[word>>28],
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
193 word&0x100000 ? "s" : "", regnames[(word>>16)&0xF],
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
194 regnames[word&0xF], regnames[(word>>8)&0xF]);
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
195 else if ((word & 0x0FE000F0) == 0x00200090)
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
196 printf("mla%s%s\t%s, %s, %s, %s\n", condition_decode[word>>28],
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
197 word&0x100000 ? "s" : "", regnames[(word>>16)&0xF],
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
198 regnames[word&0xF], regnames[(word>>8)&0xF],
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
199 regnames[(word>>12)&0xF]);
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
200 else if ((word & 0x0F8000F0) == 0x00800090)
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
201 printf("%c%sl%s%s\t%s, %s, %s, %s\n",
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
202 word&0x400000 ? 's' : 'u',
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
203 word&0x200000 ? "mla" : "mul",
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
204 condition_decode[word>>28],
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
205 word&0x100000 ? "s" : "",
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
206 regnames[(word>>12)&0xF], regnames[(word>>16)&0xF],
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
207 regnames[word&0xF], regnames[(word>>8)&0xF]);
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
208 else
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
209 printf("<invalid multiply>\n");
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
210 }
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
211
92
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
212 static int
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
213 check_ldr_litpool(off, word, loff, size)
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
214 unsigned off, word, loff;
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
215 {
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
216 unsigned litoff, datum;
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
217
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
218 /* base reg must be 15 */
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
219 if (((word >> 16) & 0xF) != 15)
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
220 return(0);
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
221 /* must be a load */
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
222 if (!(word & 0x100000))
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
223 return(0);
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
224 /* no writeback allowed */
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
225 if (word & 0x200000)
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
226 return(0);
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
227 /* alignment */
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
228 if (loff & (size - 1))
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
229 return(0);
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
230 /* range */
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
231 off += 8;
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
232 if (word & 0x800000)
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
233 litoff = off + loff;
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
234 else {
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
235 if (loff > off)
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
236 return(0);
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
237 litoff = off - loff;
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
238 }
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
239 if (litoff >= disasm_len)
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
240 return(0);
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
241 /* all checks passed, proceed */
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
242 switch (size) {
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
243 case 1:
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
244 datum = filemap[litoff];
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
245 break;
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
246 case 2:
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
247 datum = get_u16(filemap + litoff);
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
248 break;
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
249 case 4:
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
250 datum = get_u32(filemap + litoff);
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
251 break;
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
252 }
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
253 printf("=0x%x\t; via 0x%x\n", datum, litoff);
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
254 return(1);
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
255 }
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
256
90
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
257 static void
91
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
258 ldr_str_imm_pre(off, word)
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
259 unsigned off, word;
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
260 {
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
261 unsigned loff = word & 0xFFF;
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
262
92
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
263 printf("%s%s%s\t%s, ", word&0x100000 ? "ldr" : "str",
91
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
264 condition_decode[word>>28], word&0x400000 ? "b" : "",
92
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
265 regnames[(word>>12)&0xF]);
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
266 if (check_ldr_litpool(off, word, loff, word&0x400000 ? 1 : 4))
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
267 return;
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
268 printf("[%s", regnames[(word>>16)&0xF]);
91
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
269 if (loff || word&0x200000)
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
270 printf(", #%s%u", word&0x800000 ? "" : "-", loff);
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
271 putchar(']');
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
272 if (word & 0x200000)
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
273 putchar('!');
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
274 if (loff >= 10)
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
275 printf("\t; 0x%x", loff);
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
276 putchar('\n');
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
277 }
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
278
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
279 static void
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
280 ldr_str_imm_post(word)
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
281 unsigned word;
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
282 {
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
283 unsigned loff = word & 0xFFF;
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
284
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
285 printf("%s%s%s%s\t%s, [%s], #%s%u", word&0x100000 ? "ldr" : "str",
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
286 condition_decode[word>>28], word&0x400000 ? "b" : "",
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
287 word&0x200000 ? "t" : "",
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
288 regnames[(word>>12)&0xF], regnames[(word>>16)&0xF],
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
289 word&0x800000 ? "" : "-", loff);
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
290 if (loff >= 10)
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
291 printf("\t; 0x%x", loff);
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
292 putchar('\n');
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
293 }
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
294
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
295 static void
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
296 ldr_str_reg_pre(word)
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
297 unsigned word;
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
298 {
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
299 if (word & 0x10) {
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
300 printf("<invalid ldr/str: offset reg shift by reg>\n");
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
301 return;
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
302 }
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
303 printf("%s%s%s\t%s, [%s, ", word&0x100000 ? "ldr" : "str",
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
304 condition_decode[word>>28], word&0x400000 ? "b" : "",
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
305 regnames[(word>>12)&0xF], regnames[(word>>16)&0xF]);
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
306 if (!(word & 0x800000))
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
307 putchar('-');
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
308 op2_regbyconst(word);
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
309 putchar(']');
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
310 if (word & 0x200000)
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
311 putchar('!');
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
312 putchar('\n');
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
313 }
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
314
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
315 static void
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
316 ldr_str_reg_post(word)
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
317 unsigned word;
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
318 {
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
319 if (word & 0x10) {
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
320 printf("<invalid ldr/str: offset reg shift by reg>\n");
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
321 return;
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
322 }
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
323 printf("%s%s%s%s\t%s, [%s], ", word&0x100000 ? "ldr" : "str",
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
324 condition_decode[word>>28], word&0x400000 ? "b" : "",
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
325 word&0x200000 ? "t" : "",
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
326 regnames[(word>>12)&0xF], regnames[(word>>16)&0xF]);
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
327 if (!(word & 0x800000))
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
328 putchar('-');
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
329 op2_regbyconst(word);
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
330 putchar('\n');
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
331 }
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
332
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
333 static void
90
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
334 ldr_str_ext(off, word)
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
335 unsigned off, word;
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
336 {
92
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
337 unsigned loff;
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
338
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
339 if (!(word&0x01000000) && word&0x200000) {
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
340 printf("<invalid ldrh/strh: P=0, W=1>\n");
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
341 return;
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
342 }
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
343 if (!(word&0x400000) && word&0xF00) {
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
344 printf("<invalid ldrh/strh: SBZ!=0>\n");
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
345 return;
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
346 }
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
347 printf("%s%s%s%c\t%s, ", word&0x100000 ? "ldr" : "str",
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
348 condition_decode[word>>28],
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
349 word&0x40 ? "s" : "",
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
350 word&0x20 ? 'h' : 'b',
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
351 regnames[(word>>12)&0xF]);
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
352 if (word & 0x400000)
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
353 loff = ((word & 0xF00) >> 4) | (word & 0xF);
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
354 switch (word & 0x01400000) {
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
355 case 0:
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
356 /* reg post */
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
357 printf("[%s], %s%s", regnames[(word>>16)&0xF],
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
358 word&0x800000 ? "" : "-", regnames[word&0xF]);
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
359 break;
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
360 case 0x400000:
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
361 /* imm post */
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
362 printf("[%s], #%s%u", regnames[(word>>16)&0xF],
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
363 word&0x800000 ? "" : "-", loff);
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
364 if (loff >= 10)
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
365 printf("\t; 0x%x", loff);
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
366 break;
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
367 case 0x01000000:
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
368 /* reg pre */
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
369 printf("[%s, %s%s]%s", regnames[(word>>16)&0xF],
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
370 word&0x800000 ? "" : "-", regnames[word&0xF],
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
371 word&0x200000 ? "!" : "");
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
372 break;
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
373 case 0x01400000:
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
374 /* imm pre */
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
375 if (check_ldr_litpool(off, word, loff, word&0x20 ? 2 : 1))
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
376 return;
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
377 printf("[%s", regnames[(word>>16)&0xF]);
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
378 if (loff || word&0x200000)
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
379 printf(", #%s%u", word&0x800000 ? "" : "-", loff);
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
380 putchar(']');
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
381 if (word & 0x200000)
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
382 putchar('!');
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
383 if (loff >= 10)
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
384 printf("\t; 0x%x", loff);
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
385 break;
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
386 }
708f2452d1ae armdis: full ldr/str decoding implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 91
diff changeset
387 putchar('\n');
90
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
388 }
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
389
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
390 static void
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
391 dataproc_74_overlay(off, word)
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
392 unsigned off, word;
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
393 {
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
394 if (word & 0x60)
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
395 ldr_str_ext(off, word);
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
396 else
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
397 multiply(word);
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
398 }
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
399
86
537cf2245d98 beginning of ARM7 disassembler
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
400 void
537cf2245d98 beginning of ARM7 disassembler
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
401 arm_disasm_line(off)
87
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
402 unsigned off;
86
537cf2245d98 beginning of ARM7 disassembler
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
403 {
87
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
404 unsigned word;
86
537cf2245d98 beginning of ARM7 disassembler
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
405
537cf2245d98 beginning of ARM7 disassembler
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
406 word = get_u32(filemap + off);
537cf2245d98 beginning of ARM7 disassembler
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
407 printf("%8x:\t%08x\t", base_vma + off, word);
537cf2245d98 beginning of ARM7 disassembler
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
408 if ((word >> 28) == 0xF) {
91
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
409 printf("<invalid-F>\n");
86
537cf2245d98 beginning of ARM7 disassembler
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
410 return;
537cf2245d98 beginning of ARM7 disassembler
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
411 }
87
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
412 switch ((word >> 24) & 0xF) {
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
413 case 0:
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
414 case 1:
88
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
415 if ((word & 0x90) == 0x90)
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
416 dataproc_74_overlay(off, word);
691551f0635b armdis: implemented decoding of data processing instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 87
diff changeset
417 else
90
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
418 dataproc(word);
87
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
419 return;
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
420 case 2:
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
421 case 3:
90
f68d8e7a904f armdis: implemented decoding of multiplication instructions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 89
diff changeset
422 dataproc(word);
87
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
423 return;
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
424 case 4:
91
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
425 ldr_str_imm_post(word);
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
426 return;
87
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
427 case 5:
91
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
428 ldr_str_imm_pre(off, word);
87
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
429 return;
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
430 case 6:
91
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
431 ldr_str_reg_post(word);
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
432 return;
87
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
433 case 7:
91
daf69d5edb3f armdis: ldr/str decoding implemented (but not PC-relative ldr yet)
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 90
diff changeset
434 ldr_str_reg_pre(word);
87
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
435 return;
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
436 case 8:
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
437 case 9:
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
438 printf("<ldm/stm>\n");
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
439 return;
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
440 case 0xA:
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
441 case 0xB:
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
442 arm_branch(off, word);
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
443 return;
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
444 case 0xC:
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
445 case 0xD:
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
446 case 0xE:
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
447 printf("<COPROCESSOR>\n");
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
448 return;
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
449 case 0xF:
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
450 printf("swi%s\t0x%x\n", condition_decode[word>>28],
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
451 word & 0xFFFFFF);
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
452 return;
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
453 }
86
537cf2245d98 beginning of ARM7 disassembler
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
454 }
537cf2245d98 beginning of ARM7 disassembler
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
455
537cf2245d98 beginning of ARM7 disassembler
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
456 main(argc, argv)
537cf2245d98 beginning of ARM7 disassembler
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
457 char **argv;
537cf2245d98 beginning of ARM7 disassembler
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
458 {
87
f7fba8518fa2 armdis: skeleton compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 86
diff changeset
459 unsigned off;
86
537cf2245d98 beginning of ARM7 disassembler
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
460
537cf2245d98 beginning of ARM7 disassembler
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
461 common_init(argc, argv, 4);
537cf2245d98 beginning of ARM7 disassembler
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
462 for (off = 0; off < disasm_len; off += 4)
537cf2245d98 beginning of ARM7 disassembler
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
463 arm_disasm_line(off);
537cf2245d98 beginning of ARM7 disassembler
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
464 exit(0);
537cf2245d98 beginning of ARM7 disassembler
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
465 }