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Rev | Author | Line No. | Line |
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31 | halyavin | 1 | |
2 | ; Copyright (c) 1999-2006, Tomasz Grysztar. |
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109 | heavyiron | 3 | ; All rights reserved. |
31 | halyavin | 4 | |
5 | |||
6 | xor eax,eax |
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157 | heavyiron | 7 | mov [stub_size],eax |
8 | mov [number_of_sections],eax |
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9 | mov [current_pass],ax |
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10 | mov [resolver_flags],eax |
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11 | assembler_loop: |
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31 | halyavin | 12 | mov eax,[labels_list] |
157 | heavyiron | 13 | mov [display_buffer],eax |
14 | mov eax,[additional_memory] |
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15 | mov [free_additional_memory],eax |
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16 | mov eax,[additional_memory_end] |
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17 | mov [structures_buffer],eax |
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18 | mov esi,[source_start] |
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19 | mov edi,[code_start] |
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20 | xor eax,eax |
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21 | mov dword [adjustment],eax |
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22 | mov dword [adjustment+4],eax |
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23 | mov dword [org_origin],edi |
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24 | mov dword [org_origin+4],eax |
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25 | mov [org_start],edi |
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26 | mov [org_registers],eax |
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27 | mov [org_symbol],eax |
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28 | mov [error_line],eax |
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29 | mov [counter],eax |
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30 | mov [format_flags],eax |
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31 | mov [number_of_relocations],eax |
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32 | mov [undefined_data_end],eax |
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33 | mov [next_pass_needed],al |
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34 | mov [output_format],al |
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35 | mov [labels_type],al |
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36 | mov [virtual_data],al |
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37 | mov [code_type],16 |
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38 | pass_loop: |
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31 | halyavin | 39 | call assemble_line |
157 | heavyiron | 40 | jnc pass_loop |
41 | mov eax,[additional_memory_end] |
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42 | cmp eax,[structures_buffer] |
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43 | je pass_done |
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44 | sub eax,20h |
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45 | mov eax,[eax+4] |
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46 | mov [current_line],eax |
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47 | jmp missing_end_directive |
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48 | pass_done: |
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31 | halyavin | 49 | call close_pass |
157 | heavyiron | 50 | mov eax,[labels_list] |
51 | check_symbols: |
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31 | halyavin | 52 | cmp eax,[memory_end] |
157 | heavyiron | 53 | jae symbols_checked |
54 | test byte [eax+8],8 |
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55 | jz symbol_defined_ok |
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56 | mov cx,[current_pass] |
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57 | cmp cx,[eax+18] |
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58 | jne symbol_defined_ok |
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59 | test byte [eax+8],1 |
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60 | jz symbol_defined_ok |
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61 | sub cx,[eax+16] |
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62 | cmp cx,1 |
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63 | jne symbol_defined_ok |
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64 | and byte [eax+8],not 1 |
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65 | or [next_pass_needed],-1 |
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66 | symbol_defined_ok: |
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31 | halyavin | 67 | test byte [eax+8],10h |
157 | heavyiron | 68 | jz use_prediction_ok |
69 | mov cx,[current_pass] |
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70 | and byte [eax+8],not 10h |
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71 | test byte [eax+8],20h |
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72 | jnz check_use_prediction |
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73 | cmp cx,[eax+18] |
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74 | jne use_prediction_ok |
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75 | test byte [eax+8],8 |
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76 | jz use_prediction_ok |
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77 | jmp use_misprediction |
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78 | check_use_prediction: |
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31 | halyavin | 79 | test byte [eax+8],8 |
157 | heavyiron | 80 | jz use_misprediction |
81 | cmp cx,[eax+18] |
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82 | je use_prediction_ok |
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83 | use_misprediction: |
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31 | halyavin | 84 | or [next_pass_needed],-1 |
157 | heavyiron | 85 | use_prediction_ok: |
31 | halyavin | 86 | test byte [eax+8],40h |
157 | heavyiron | 87 | jz check_next_symbol |
88 | and byte [eax+8],not 40h |
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89 | test byte [eax+8],4 |
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90 | jnz define_misprediction |
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91 | mov cx,[current_pass] |
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92 | test byte [eax+8],80h |
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93 | jnz check_define_prediction |
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94 | cmp cx,[eax+16] |
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95 | jne check_next_symbol |
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96 | test byte [eax+8],1 |
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97 | jz check_next_symbol |
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98 | jmp define_misprediction |
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99 | check_define_prediction: |
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31 | halyavin | 100 | test byte [eax+8],1 |
157 | heavyiron | 101 | jz define_misprediction |
102 | cmp cx,[eax+16] |
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103 | je check_next_symbol |
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104 | define_misprediction: |
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31 | halyavin | 105 | or [next_pass_needed],-1 |
157 | heavyiron | 106 | check_next_symbol: |
31 | halyavin | 107 | add eax,LABEL_STRUCTURE_SIZE |
157 | heavyiron | 108 | jmp check_symbols |
109 | symbols_checked: |
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31 | halyavin | 110 | cmp [next_pass_needed],0 |
157 | heavyiron | 111 | jne next_pass |
112 | mov eax,[error_line] |
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113 | or eax,eax |
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114 | jz assemble_ok |
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115 | mov [current_line],eax |
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116 | jmp near [error] |
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117 | next_pass: |
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31 | halyavin | 118 | inc [current_pass] |
157 | heavyiron | 119 | mov ax,[current_pass] |
120 | cmp ax,[passes_limit] |
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121 | je code_cannot_be_generated |
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122 | jmp assembler_loop |
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123 | assemble_ok: |
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31 | halyavin | 124 | ret |
157 | heavyiron | 125 | |
31 | halyavin | 126 | |
127 | mov eax,[display_buffer] |
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157 | heavyiron | 128 | sub eax,100h |
129 | cmp edi,eax |
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130 | ja out_of_memory |
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131 | lods byte [esi] |
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132 | cmp al,1 |
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133 | je assemble_instruction |
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134 | jb source_end |
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135 | cmp al,3 |
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136 | jb define_label |
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137 | je define_constant |
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138 | cmp al,0Fh |
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139 | je new_line |
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140 | cmp al,13h |
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141 | je code_type_setting |
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142 | cmp al,10h |
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143 | jne illegal_instruction |
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144 | lods byte [esi] |
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145 | jmp segment_prefix |
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146 | code_type_setting: |
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31 | halyavin | 147 | lods byte [esi] |
157 | heavyiron | 148 | mov [code_type],al |
149 | jmp line_assembled |
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150 | new_line: |
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31 | halyavin | 151 | lods dword [esi] |
157 | heavyiron | 152 | mov [current_line],eax |
153 | mov [prefixed_instruction],0 |
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154 | continue_line: |
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31 | halyavin | 155 | cmp byte [esi],0Fh |
157 | heavyiron | 156 | je line_assembled |
157 | jmp assemble_line |
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158 | define_label: |
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31 | halyavin | 159 | lods dword [esi] |
157 | heavyiron | 160 | cmp eax,0Fh |
161 | jb invalid_use_of_symbol |
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162 | je reserved_word_used_as_symbol |
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163 | mov ebx,eax |
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164 | lods byte [esi] |
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165 | mov cl,al |
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166 | mov eax,edi |
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167 | xor edx,edx |
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168 | sub eax,dword [org_origin] |
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169 | sbb edx,dword [org_origin+4] |
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170 | mov ch,[labels_type] |
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171 | cmp [virtual_data],0 |
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172 | jne make_virtual_label |
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173 | or byte [ebx+9],1 |
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174 | xchg eax,[ebx] |
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175 | xchg edx,[ebx+4] |
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176 | sub eax,[ebx] |
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177 | sbb edx,[ebx+4] |
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178 | mov dword [adjustment],eax |
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179 | mov dword [adjustment+4],edx |
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180 | or eax,edx |
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181 | setnz ah |
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182 | jmp finish_label_symbol |
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183 | make_virtual_label: |
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31 | halyavin | 184 | and byte [ebx+9],not 1 |
157 | heavyiron | 185 | cmp eax,[ebx] |
186 | mov [ebx],eax |
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187 | setne ah |
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188 | cmp edx,[ebx+4] |
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189 | mov [ebx+4],edx |
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190 | setne al |
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191 | or ah,al |
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192 | finish_label_symbol: |
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31 | halyavin | 193 | cmp cl,[ebx+10] |
157 | heavyiron | 194 | mov [ebx+10],cl |
195 | setne al |
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196 | or ah,al |
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197 | cmp ch,[ebx+11] |
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198 | mov [ebx+11],ch |
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199 | setne al |
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200 | or ah,al |
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201 | mov edx,[org_registers] |
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202 | cmp edx,[ebx+12] |
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203 | mov [ebx+12],edx |
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204 | setne al |
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205 | or ah,al |
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206 | or ch,ch |
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207 | jz label_symbol_ok |
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208 | mov edx,[org_symbol] |
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209 | cmp edx,[ebx+20] |
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210 | mov [ebx+20],edx |
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211 | setne al |
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212 | or ah,al |
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213 | label_symbol_ok: |
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31 | halyavin | 214 | mov cx,[current_pass] |
157 | heavyiron | 215 | xchg [ebx+16],cx |
216 | mov edx,[current_line] |
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217 | mov [ebx+28],edx |
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218 | and byte [ebx+8],not 2 |
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219 | test byte [ebx+8],1 |
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220 | jz new_label |
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221 | cmp cx,[ebx+16] |
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222 | je symbol_already_defined |
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223 | inc cx |
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224 | sub cx,[ebx+16] |
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225 | setnz al |
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226 | or ah,al |
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227 | jz continue_line |
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228 | test byte [ebx+8],8 |
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229 | jz continue_line |
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230 | mov cx,[current_pass] |
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231 | cmp cx,[ebx+18] |
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232 | jne continue_line |
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233 | or [next_pass_needed],-1 |
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234 | jmp continue_line |
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235 | new_label: |
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31 | halyavin | 236 | or byte [ebx+8],1 |
157 | heavyiron | 237 | jmp continue_line |
238 | define_constant: |
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31 | halyavin | 239 | lods dword [esi] |
157 | heavyiron | 240 | inc esi |
241 | cmp eax,0Fh |
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242 | jb invalid_use_of_symbol |
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243 | je reserved_word_used_as_symbol |
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244 | mov edx,[eax+8] |
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245 | push edx |
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246 | cmp [current_pass],0 |
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247 | je get_constant_value |
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248 | test dl,4 |
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249 | jnz get_constant_value |
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250 | mov cx,[current_pass] |
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251 | cmp cx,[eax+16] |
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252 | je get_constant_value |
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253 | and dl,not 1 |
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254 | mov [eax+8],dl |
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255 | get_constant_value: |
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31 | halyavin | 256 | push eax |
157 | heavyiron | 257 | mov al,byte [esi-1] |
258 | push eax |
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259 | call get_value |
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260 | pop ebx |
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261 | mov ch,bl |
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262 | pop ebx |
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263 | pop dword [ebx+8] |
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264 | cmp ebx,0Fh |
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265 | jb invalid_use_of_symbol |
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266 | je reserved_word_used_as_symbol |
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267 | xor cl,cl |
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268 | mov ch,[value_type] |
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269 | cmp ch,3 |
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270 | je invalid_use_of_symbol |
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271 | make_constant: |
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31 | halyavin | 272 | and byte [ebx+9],not 1 |
157 | heavyiron | 273 | cmp eax,[ebx] |
274 | mov [ebx],eax |
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275 | setne ah |
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276 | cmp edx,[ebx+4] |
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277 | mov [ebx+4],edx |
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278 | setne al |
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279 | or ah,al |
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280 | cmp cl,[ebx+10] |
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281 | mov [ebx+10],cl |
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282 | setne al |
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283 | or ah,al |
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284 | cmp ch,[ebx+11] |
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285 | mov [ebx+11],ch |
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286 | setne al |
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287 | or ah,al |
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288 | xor edx,edx |
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289 | cmp edx,[ebx+12] |
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290 | mov [ebx+12],edx |
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291 | setne al |
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292 | or ah,al |
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293 | or ch,ch |
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294 | jz constant_symbol_ok |
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295 | mov edx,[symbol_identifier] |
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296 | cmp edx,[ebx+20] |
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297 | mov [ebx+20],edx |
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298 | setne al |
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299 | or ah,al |
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300 | constant_symbol_ok: |
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31 | halyavin | 301 | mov cx,[current_pass] |
157 | heavyiron | 302 | xchg [ebx+16],cx |
303 | mov edx,[current_line] |
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304 | mov [ebx+28],edx |
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305 | test byte [ebx+8],1 |
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306 | jz new_constant |
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307 | cmp cx,[ebx+16] |
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308 | jne redeclare_constant |
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309 | test byte [ebx+8],2 |
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310 | jz symbol_already_defined |
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311 | or byte [ebx+8],4 |
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312 | jmp instruction_assembled |
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313 | redeclare_constant: |
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31 | halyavin | 314 | inc cx |
157 | heavyiron | 315 | sub cx,[ebx+16] |
316 | setnz al |
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317 | or ah,al |
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318 | jz instruction_assembled |
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319 | test byte [ebx+8],4 |
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320 | jnz instruction_assembled |
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321 | test byte [ebx+8],8 |
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322 | jz instruction_assembled |
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323 | mov cx,[current_pass] |
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324 | cmp cx,[ebx+18] |
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325 | jne instruction_assembled |
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326 | or [next_pass_needed],-1 |
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327 | jmp instruction_assembled |
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328 | new_constant: |
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31 | halyavin | 329 | or byte [ebx+8],1+2 |
157 | heavyiron | 330 | jmp instruction_assembled |
331 | assemble_instruction: |
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31 | halyavin | 332 | mov [operand_size],0 |
157 | heavyiron | 333 | mov [size_override],0 |
334 | mov [operand_prefix],0 |
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335 | mov [rex_prefix],0 |
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336 | mov [immediate_size],0 |
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337 | movzx ebx,word [esi] |
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338 | mov al,[esi+2] |
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339 | add ebx,assembler |
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340 | add esi,3 |
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341 | jmp near ebx |
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342 | instruction_assembled: |
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31 | halyavin | 343 | mov al,[esi] |
157 | heavyiron | 344 | cmp al,0Fh |
345 | je line_assembled |
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346 | or al,al |
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347 | jnz extra_characters_on_line |
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348 | line_assembled: |
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31 | halyavin | 349 | clc |
157 | heavyiron | 350 | ret |
351 | source_end: |
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31 | halyavin | 352 | dec esi |
157 | heavyiron | 353 | stc |
354 | ret |
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355 | skip_line: |
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31 | halyavin | 356 | call skip_symbol |
157 | heavyiron | 357 | jnc skip_line |
358 | ret |
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359 | skip_symbol: |
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31 | halyavin | 360 | lods byte [esi] |
157 | heavyiron | 361 | or al,al |
362 | jz nothing_to_skip |
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363 | cmp al,0Fh |
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364 | je nothing_to_skip |
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365 | cmp al,1 |
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366 | je skip_instruction |
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367 | cmp al,2 |
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368 | je skip_label |
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369 | cmp al,3 |
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370 | je skip_label |
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371 | cmp al,20h |
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372 | jb skip_assembler_symbol |
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373 | cmp al,'(' |
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374 | je skip_expression |
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375 | cmp al,'[' |
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376 | je skip_address |
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377 | skip_done: |
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31 | halyavin | 378 | clc |
157 | heavyiron | 379 | ret |
380 | skip_label: |
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31 | halyavin | 381 | add esi,2 |
157 | heavyiron | 382 | skip_instruction: |
31 | halyavin | 383 | add esi,2 |
157 | heavyiron | 384 | skip_assembler_symbol: |
31 | halyavin | 385 | inc esi |
157 | heavyiron | 386 | jmp skip_done |
387 | skip_address: |
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31 | halyavin | 388 | mov al,[esi] |
157 | heavyiron | 389 | and al,11110000b |
390 | cmp al,60h |
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391 | jb skip_expression |
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392 | cmp al,70h |
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393 | ja skip_expression |
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394 | inc esi |
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395 | jmp skip_address |
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396 | skip_expression: |
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31 | halyavin | 397 | lods byte [esi] |
157 | heavyiron | 398 | or al,al |
399 | jz skip_string |
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400 | cmp al,'.' |
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401 | je skip_fp_value |
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402 | cmp al,')' |
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403 | je skip_done |
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404 | cmp al,']' |
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405 | je skip_done |
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406 | cmp al,'!' |
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407 | je skip_expression |
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408 | cmp al,0Fh |
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409 | je skip_expression |
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410 | cmp al,10h |
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411 | je skip_register |
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412 | cmp al,11h |
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413 | je skip_label_value |
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414 | cmp al,80h |
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415 | jae skip_expression |
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416 | movzx eax,al |
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417 | add esi,eax |
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418 | jmp skip_expression |
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419 | skip_label_value: |
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31 | halyavin | 420 | add esi,3 |
157 | heavyiron | 421 | skip_register: |
31 | halyavin | 422 | inc esi |
157 | heavyiron | 423 | jmp skip_expression |
424 | skip_fp_value: |
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31 | halyavin | 425 | add esi,12 |
157 | heavyiron | 426 | jmp skip_done |
427 | skip_string: |
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31 | halyavin | 428 | lods dword [esi] |
157 | heavyiron | 429 | add esi,eax |
430 | inc esi |
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431 | jmp skip_done |
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432 | nothing_to_skip: |
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31 | halyavin | 433 | dec esi |
157 | heavyiron | 434 | stc |
435 | ret |
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436 | |||
31 | halyavin | 437 | |
438 | lods byte [esi] |
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157 | heavyiron | 439 | cmp al,'(' |
440 | jne invalid_argument |
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441 | cmp byte [esi],'.' |
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442 | je invalid_value |
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443 | call get_qword_value |
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444 | mov cl,[value_type] |
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445 | test cl,1 |
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446 | jnz invalid_use_of_symbol |
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447 | mov [labels_type],cl |
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448 | mov ecx,edi |
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449 | sub ecx,eax |
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450 | adc edx,0 |
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451 | neg edx |
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452 | mov dword [org_origin],ecx |
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453 | mov dword [org_origin+4],edx |
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454 | mov [org_registers],0 |
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455 | mov [org_start],edi |
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456 | mov edx,[symbol_identifier] |
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457 | mov [org_symbol],edx |
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458 | cmp [output_format],1 |
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459 | ja instruction_assembled |
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460 | cmp edi,[code_start] |
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461 | jne instruction_assembled |
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462 | cmp eax,100h |
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463 | jne instruction_assembled |
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464 | bts [format_flags],0 |
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465 | jmp instruction_assembled |
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466 | label_directive: |
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31 | halyavin | 467 | lods byte [esi] |
157 | heavyiron | 468 | cmp al,2 |
469 | jne invalid_argument |
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470 | lods dword [esi] |
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471 | cmp eax,0Fh |
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472 | jb invalid_use_of_symbol |
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473 | je reserved_word_used_as_symbol |
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474 | inc esi |
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475 | mov ebx,eax |
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476 | xor cl,cl |
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477 | lods byte [esi] |
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478 | cmp al,':' |
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479 | je get_label_size |
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480 | dec esi |
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481 | cmp al,11h |
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482 | jne label_size_ok |
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483 | get_label_size: |
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31 | halyavin | 484 | lods word [esi] |
157 | heavyiron | 485 | cmp al,11h |
486 | jne invalid_argument |
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487 | mov cl,ah |
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488 | label_size_ok: |
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31 | halyavin | 489 | mov eax,edi |
157 | heavyiron | 490 | xor edx,edx |
491 | sub eax,dword [org_origin] |
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492 | sbb edx,dword [org_origin+4] |
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493 | mov ebp,[org_registers] |
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494 | cmp byte [esi],80h |
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495 | je get_free_label_value |
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496 | mov ch,[labels_type] |
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497 | push [org_symbol] |
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498 | pop [address_symbol] |
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499 | cmp [virtual_data],0 |
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500 | jne make_free_label |
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501 | or byte [ebx+9],1 |
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502 | xchg eax,[ebx] |
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503 | xchg edx,[ebx+4] |
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504 | sub eax,[ebx] |
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505 | sbb edx,[ebx+4] |
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506 | mov dword [adjustment],eax |
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507 | mov dword [adjustment+4],edx |
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508 | or eax,edx |
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509 | setne ah |
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510 | jmp finish_label |
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511 | get_free_label_value: |
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31 | halyavin | 512 | inc esi |
157 | heavyiron | 513 | lods byte [esi] |
514 | cmp al,'(' |
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515 | jne invalid_argument |
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516 | push dword [ebx+8] |
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517 | push ebx ecx |
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518 | and byte [ebx+8],not 1 |
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519 | cmp byte [esi],'.' |
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520 | je invalid_value |
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521 | call get_address_value |
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522 | or bh,bh |
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523 | setnz ch |
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524 | xchg ch,cl |
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525 | mov bp,cx |
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526 | shl ebp,16 |
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527 | xchg bl,bh |
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528 | mov bp,bx |
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529 | pop ecx ebx |
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530 | pop dword [ebx+8] |
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531 | mov ch,[value_type] |
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532 | or ch,ch |
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533 | jz make_free_label |
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534 | cmp ch,4 |
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535 | je make_free_label |
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536 | cmp ch,2 |
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537 | jne invalid_use_of_symbol |
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538 | make_free_label: |
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31 | halyavin | 539 | and byte [ebx+9],not 1 |
157 | heavyiron | 540 | cmp eax,[ebx] |
541 | mov [ebx],eax |
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542 | setne ah |
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543 | cmp edx,[ebx+4] |
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544 | mov [ebx+4],edx |
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545 | setne al |
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546 | or ah,al |
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547 | jmp finish_label |
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548 | finish_label: |
||
31 | halyavin | 549 | cmp cl,[ebx+10] |
157 | heavyiron | 550 | mov [ebx+10],cl |
551 | setne al |
||
552 | or ah,al |
||
553 | cmp ch,[ebx+11] |
||
554 | mov [ebx+11],ch |
||
555 | setne al |
||
556 | or ah,al |
||
557 | cmp ebp,[ebx+12] |
||
558 | mov [ebx+12],ebp |
||
559 | setne al |
||
560 | or ah,al |
||
561 | or ch,ch |
||
562 | jz free_label_symbol_ok |
||
563 | mov edx,[address_symbol] |
||
564 | cmp edx,[ebx+20] |
||
565 | mov [ebx+20],edx |
||
566 | setne al |
||
567 | or ah,al |
||
568 | free_label_symbol_ok: |
||
31 | halyavin | 569 | mov cx,[current_pass] |
157 | heavyiron | 570 | xchg [ebx+16],cx |
571 | mov edx,[current_line] |
||
572 | mov [ebx+28],edx |
||
573 | and byte [ebx+8],not 2 |
||
574 | test byte [ebx+8],1 |
||
575 | jz new_free_label |
||
576 | cmp cx,[ebx+16] |
||
577 | je symbol_already_defined |
||
578 | inc cx |
||
579 | sub cx,[ebx+16] |
||
580 | setnz al |
||
581 | or ah,al |
||
582 | jz instruction_assembled |
||
583 | test byte [ebx+8],8 |
||
584 | jz instruction_assembled |
||
585 | mov cx,[current_pass] |
||
586 | cmp cx,[ebx+18] |
||
587 | jne instruction_assembled |
||
588 | or [next_pass_needed],-1 |
||
589 | jmp instruction_assembled |
||
590 | new_free_label: |
||
31 | halyavin | 591 | or byte [ebx+8],1 |
157 | heavyiron | 592 | jmp instruction_assembled |
593 | load_directive: |
||
31 | halyavin | 594 | lods byte [esi] |
157 | heavyiron | 595 | cmp al,2 |
596 | jne invalid_argument |
||
597 | lods dword [esi] |
||
598 | cmp eax,0Fh |
||
599 | jb invalid_use_of_symbol |
||
600 | je reserved_word_used_as_symbol |
||
601 | inc esi |
||
602 | push eax |
||
603 | mov al,1 |
||
604 | cmp byte [esi],11h |
||
605 | jne load_size_ok |
||
606 | lods byte [esi] |
||
607 | lods byte [esi] |
||
608 | load_size_ok: |
||
31 | halyavin | 609 | cmp al,8 |
157 | heavyiron | 610 | ja invalid_value |
611 | mov [operand_size],al |
||
612 | mov dword [value],0 |
||
613 | mov dword [value+4],0 |
||
614 | lods word [esi] |
||
615 | cmp ax,82h+'(' shl 8 |
||
616 | jne invalid_argument |
||
617 | load_from_code: |
||
31 | halyavin | 618 | cmp byte [esi],'.' |
157 | heavyiron | 619 | je invalid_value |
620 | call get_relative_offset |
||
621 | neg eax |
||
622 | cmp [next_pass_needed],0 |
||
623 | jne load_address_ok |
||
624 | cmp [value_type],0 |
||
625 | jne invalid_use_of_symbol |
||
626 | load_address_ok: |
||
31 | halyavin | 627 | push esi edi |
157 | heavyiron | 628 | mov esi,edi |
629 | sub esi,eax |
||
630 | jc bad_load_address |
||
631 | cmp esi,[org_start] |
||
632 | jb bad_load_address |
||
633 | mov edi,value |
||
634 | movzx ecx,[operand_size] |
||
635 | cmp ecx,eax |
||
636 | ja bad_load_address |
||
637 | rep movs byte [edi],[esi] |
||
638 | jmp value_loaded |
||
639 | bad_load_address: |
||
31 | halyavin | 640 | cmp [error_line],0 |
157 | heavyiron | 641 | jne value_loaded |
642 | mov eax,[current_line] |
||
643 | mov [error_line],eax |
||
644 | mov [error],value_out_of_range |
||
645 | value_loaded: |
||
31 | halyavin | 646 | pop edi esi |
157 | heavyiron | 647 | mov eax,dword [value] |
648 | mov edx,dword [value+4] |
||
649 | pop ebx |
||
650 | xor cx,cx |
||
651 | jmp make_constant |
||
652 | store_directive: |
||
31 | halyavin | 653 | cmp byte [esi],11h |
157 | heavyiron | 654 | je sized_store |
655 | lods byte [esi] |
||
656 | cmp al,'(' |
||
657 | jne invalid_argument |
||
658 | call get_byte_value |
||
659 | xor edx,edx |
||
660 | movzx eax,al |
||
661 | mov [operand_size],1 |
||
662 | jmp store_value_ok |
||
663 | sized_store: |
||
31 | halyavin | 664 | call get_value |
157 | heavyiron | 665 | store_value_ok: |
31 | halyavin | 666 | cmp [value_type],0 |
157 | heavyiron | 667 | jne invalid_use_of_symbol |
668 | mov dword [value],eax |
||
669 | mov dword [value+4],edx |
||
670 | lods word [esi] |
||
671 | cmp ax,80h+'(' shl 8 |
||
672 | jne invalid_argument |
||
673 | cmp byte [esi],'.' |
||
674 | je invalid_value |
||
675 | call get_relative_offset |
||
676 | neg eax |
||
677 | cmp [next_pass_needed],0 |
||
678 | jne store_address_ok |
||
679 | cmp [value_type],0 |
||
680 | jne invalid_use_of_symbol |
||
681 | store_address_ok: |
||
31 | halyavin | 682 | push esi edi |
157 | heavyiron | 683 | sub edi,eax |
684 | jc bad_store_address |
||
685 | cmp edi,[org_start] |
||
686 | jb bad_store_address |
||
687 | mov esi,value |
||
688 | movzx ecx,[operand_size] |
||
689 | cmp ecx,eax |
||
690 | ja bad_store_address |
||
691 | rep movs byte [edi],[esi] |
||
692 | mov eax,edi |
||
693 | pop edi esi |
||
694 | cmp edi,[undefined_data_end] |
||
695 | jne instruction_assembled |
||
696 | cmp eax,[undefined_data_start] |
||
697 | jbe instruction_assembled |
||
698 | mov [undefined_data_start],eax |
||
699 | jmp instruction_assembled |
||
700 | bad_store_address: |
||
31 | halyavin | 701 | pop edi esi |
157 | heavyiron | 702 | cmp [error_line],0 |
703 | jne instruction_assembled |
||
704 | mov eax,[current_line] |
||
705 | mov [error_line],eax |
||
706 | mov [error],value_out_of_range |
||
707 | jmp instruction_assembled |
||
708 | |||
31 | halyavin | 709 | |
710 | lods byte [esi] |
||
157 | heavyiron | 711 | cmp al,'(' |
712 | jne invalid_argument |
||
713 | cmp byte [esi],0 |
||
714 | jne display_byte |
||
715 | inc esi |
||
716 | lods dword [esi] |
||
717 | mov ecx,eax |
||
718 | push edi |
||
719 | mov edi,[display_buffer] |
||
720 | sub edi,4 |
||
721 | sub edi,eax |
||
722 | mov [display_buffer],edi |
||
723 | rep movs byte [edi],[esi] |
||
724 | stos dword [edi] |
||
725 | pop edi |
||
726 | inc esi |
||
727 | jmp display_next |
||
728 | display_byte: |
||
31 | halyavin | 729 | call get_byte_value |
157 | heavyiron | 730 | push edi |
731 | mov edi,[display_buffer] |
||
732 | sub edi,4+1 |
||
733 | mov [display_buffer],edi |
||
734 | stos byte [edi] |
||
735 | mov eax,1 |
||
736 | stos dword [edi] |
||
737 | pop edi |
||
738 | display_next: |
||
31 | halyavin | 739 | cmp edi,[display_buffer] |
157 | heavyiron | 740 | ja out_of_memory |
741 | lods byte [esi] |
||
742 | cmp al,',' |
||
743 | je display_directive |
||
744 | dec esi |
||
745 | jmp instruction_assembled |
||
746 | flush_display_buffer: |
||
31 | halyavin | 747 | mov eax,[display_buffer] |
157 | heavyiron | 748 | or eax,eax |
749 | jz display_done |
||
750 | mov esi,[labels_list] |
||
751 | cmp esi,eax |
||
752 | je display_done |
||
753 | display_messages: |
||
31 | halyavin | 754 | sub esi,4 |
157 | heavyiron | 755 | mov ecx,[esi] |
756 | sub esi,ecx |
||
757 | push esi |
||
758 | call display_block |
||
759 | pop esi |
||
760 | cmp esi,[display_buffer] |
||
761 | jne display_messages |
||
762 | mov eax,[labels_list] |
||
763 | mov [display_buffer],eax |
||
764 | display_done: |
||
31 | halyavin | 765 | ret |
157 | heavyiron | 766 | times_directive: |
31 | halyavin | 767 | lods byte [esi] |
157 | heavyiron | 768 | cmp al,'(' |
769 | jne invalid_argument |
||
770 | cmp byte [esi],'.' |
||
771 | je invalid_value |
||
772 | call get_dword_value |
||
773 | cmp [next_pass_needed],0 |
||
774 | jne times_value_ok |
||
775 | cmp [value_type],0 |
||
776 | jne invalid_use_of_symbol |
||
777 | times_value_ok: |
||
31 | halyavin | 778 | cmp eax,0 |
157 | heavyiron | 779 | je zero_times |
780 | jl negative_times |
||
781 | cmp byte [esi],':' |
||
782 | jne times_argument_ok |
||
783 | inc esi |
||
784 | times_argument_ok: |
||
31 | halyavin | 785 | push [counter] |
157 | heavyiron | 786 | push [counter_limit] |
787 | mov [counter_limit],eax |
||
788 | mov [counter],1 |
||
789 | times_loop: |
||
31 | halyavin | 790 | mov eax,esp |
157 | heavyiron | 791 | sub eax,100h |
792 | jc stack_overflow |
||
793 | cmp eax,[stack_limit] |
||
794 | jb stack_overflow |
||
795 | push esi |
||
796 | or [prefixed_instruction],-1 |
||
797 | call continue_line |
||
798 | mov eax,[counter_limit] |
||
799 | cmp [counter],eax |
||
800 | je times_done |
||
801 | inc [counter] |
||
802 | pop esi |
||
803 | jmp times_loop |
||
804 | times_done: |
||
31 | halyavin | 805 | pop eax |
157 | heavyiron | 806 | pop [counter_limit] |
807 | pop [counter] |
||
808 | jmp instruction_assembled |
||
809 | negative_times: |
||
31 | halyavin | 810 | cmp [error_line],0 |
157 | heavyiron | 811 | jne zero_times |
812 | mov eax,[current_line] |
||
813 | mov [error_line],eax |
||
814 | mov [error],invalid_value |
||
815 | zero_times: |
||
31 | halyavin | 816 | call skip_line |
157 | heavyiron | 817 | jmp instruction_assembled |
818 | |||
31 | halyavin | 819 | |
820 | lods byte [esi] |
||
157 | heavyiron | 821 | cmp al,80h |
822 | jne virtual_at_current |
||
823 | lods byte [esi] |
||
824 | cmp al,'(' |
||
825 | jne invalid_argument |
||
826 | cmp byte [esi],'.' |
||
827 | je invalid_value |
||
828 | call get_address_value |
||
829 | mov ebp,[address_symbol] |
||
830 | xor ch,ch |
||
831 | or bh,bh |
||
832 | jz set_virtual |
||
833 | mov ch,1 |
||
834 | jmp set_virtual |
||
835 | virtual_at_current: |
||
31 | halyavin | 836 | dec esi |
157 | heavyiron | 837 | mov al,[labels_type] |
838 | mov [value_type],al |
||
839 | mov ebp,[org_symbol] |
||
840 | mov eax,edi |
||
841 | xor edx,edx |
||
842 | sub eax,dword [org_origin] |
||
843 | sbb edx,dword [org_origin+4] |
||
844 | mov bx,word [org_registers] |
||
845 | mov cx,word [org_registers+2] |
||
846 | xchg bh,bl |
||
847 | xchg ch,cl |
||
848 | set_virtual: |
||
31 | halyavin | 849 | push [org_registers] |
157 | heavyiron | 850 | mov byte [org_registers],bh |
851 | mov byte [org_registers+1],bl |
||
852 | mov byte [org_registers+2],ch |
||
853 | mov byte [org_registers+3],cl |
||
854 | call allocate_structure_data |
||
855 | mov word [ebx],virtual_directive-assembler |
||
856 | not eax |
||
857 | not edx |
||
858 | add eax,1 |
||
859 | adc edx,0 |
||
860 | add eax,edi |
||
861 | adc edx,0 |
||
862 | xchg dword [org_origin],eax |
||
863 | xchg dword [org_origin+4],edx |
||
864 | mov [ebx+10h],eax |
||
865 | mov [ebx+14h],edx |
||
866 | pop eax |
||
867 | mov [ebx+18h],eax |
||
868 | mov al,[virtual_data] |
||
869 | mov [ebx+2],al |
||
870 | mov al,[labels_type] |
||
871 | mov [ebx+3],al |
||
872 | mov eax,edi |
||
873 | xchg eax,[org_start] |
||
874 | mov [ebx+0Ch],eax |
||
875 | xchg ebp,[org_symbol] |
||
876 | mov [ebx+1Ch],ebp |
||
877 | mov [ebx+8],edi |
||
878 | mov eax,[current_line] |
||
879 | mov [ebx+4],eax |
||
880 | or [virtual_data],-1 |
||
881 | mov al,[value_type] |
||
882 | test al,1 |
||
883 | jnz invalid_use_of_symbol |
||
884 | mov [labels_type],al |
||
885 | jmp instruction_assembled |
||
886 | allocate_structure_data: |
||
31 | halyavin | 887 | mov ebx,[structures_buffer] |
157 | heavyiron | 888 | sub ebx,20h |
889 | cmp ebx,[free_additional_memory] |
||
890 | jb out_of_memory |
||
891 | mov [structures_buffer],ebx |
||
892 | ret |
||
893 | find_structure_data: |
||
31 | halyavin | 894 | mov ebx,[structures_buffer] |
157 | heavyiron | 895 | scan_structures: |
31 | halyavin | 896 | cmp ebx,[additional_memory_end] |
157 | heavyiron | 897 | je no_such_structure |
898 | cmp ax,[ebx] |
||
899 | je structure_data_found |
||
900 | add ebx,20h |
||
901 | jmp scan_structures |
||
902 | structure_data_found: |
||
109 | heavyiron | 903 | ret |
157 | heavyiron | 904 | no_such_structure: |
31 | halyavin | 905 | stc |
157 | heavyiron | 906 | ret |
907 | end_virtual: |
||
31 | halyavin | 908 | call find_structure_data |
157 | heavyiron | 909 | jc unexpected_instruction |
910 | mov al,[ebx+2] |
||
911 | mov [virtual_data],al |
||
912 | mov al,[ebx+3] |
||
913 | mov [labels_type],al |
||
914 | mov eax,[ebx+10h] |
||
915 | mov dword [org_origin],eax |
||
916 | mov eax,[ebx+14h] |
||
917 | mov dword [org_origin+4],eax |
||
918 | mov eax,[ebx+18h] |
||
919 | mov [org_registers],eax |
||
920 | mov eax,[ebx+0Ch] |
||
921 | mov [org_start],eax |
||
922 | mov eax,[ebx+1Ch] |
||
923 | mov [org_symbol],eax |
||
924 | mov edi,[ebx+8] |
||
925 | remove_structure_data: |
||
31 | halyavin | 926 | push esi edi |
157 | heavyiron | 927 | mov esi,[structures_buffer] |
928 | mov ecx,ebx |
||
929 | sub ecx,esi |
||
930 | lea edi,[esi+20h] |
||
931 | mov [structures_buffer],edi |
||
932 | shr ecx,2 |
||
933 | rep movs dword [edi],[esi] |
||
934 | pop edi esi |
||
935 | ret |
||
936 | repeat_directive: |
||
31 | halyavin | 937 | cmp [prefixed_instruction],0 |
157 | heavyiron | 938 | jne unexpected_instruction |
939 | lods byte [esi] |
||
940 | cmp al,'(' |
||
941 | jne invalid_argument |
||
942 | cmp byte [esi],'.' |
||
943 | je invalid_value |
||
944 | call get_dword_value |
||
945 | cmp [next_pass_needed],0 |
||
946 | jne repeat_value_ok |
||
947 | cmp [value_type],0 |
||
948 | jne invalid_use_of_symbol |
||
949 | repeat_value_ok: |
||
31 | halyavin | 950 | cmp eax,0 |
157 | heavyiron | 951 | je zero_repeat |
952 | jl negative_repeat |
||
953 | call allocate_structure_data |
||
954 | mov word [ebx],repeat_directive-assembler |
||
955 | xchg eax,[counter_limit] |
||
956 | mov [ebx+10h],eax |
||
957 | mov eax,1 |
||
958 | xchg eax,[counter] |
||
959 | mov [ebx+14h],eax |
||
960 | mov [ebx+8],esi |
||
961 | mov eax,[current_line] |
||
962 | mov [ebx+4],eax |
||
963 | jmp instruction_assembled |
||
964 | end_repeat: |
||
31 | halyavin | 965 | cmp [prefixed_instruction],0 |
157 | heavyiron | 966 | jne unexpected_instruction |
967 | call find_structure_data |
||
968 | jc unexpected_instruction |
||
969 | mov eax,[counter_limit] |
||
970 | inc [counter] |
||
971 | cmp [counter],eax |
||
972 | jbe continue_repeating |
||
973 | stop_repeat: |
||
31 | halyavin | 974 | mov eax,[ebx+10h] |
157 | heavyiron | 975 | mov [counter_limit],eax |
976 | mov eax,[ebx+14h] |
||
977 | mov [counter],eax |
||
978 | call remove_structure_data |
||
979 | jmp instruction_assembled |
||
980 | continue_repeating: |
||
31 | halyavin | 981 | mov esi,[ebx+8] |
157 | heavyiron | 982 | jmp instruction_assembled |
983 | negative_repeat: |
||
31 | halyavin | 984 | cmp [error_line],0 |
157 | heavyiron | 985 | jne zero_repeat |
986 | mov eax,[current_line] |
||
987 | mov [error_line],eax |
||
988 | mov [error],invalid_value |
||
989 | zero_repeat: |
||
31 | halyavin | 990 | mov al,[esi] |
157 | heavyiron | 991 | or al,al |
992 | jz missing_end_directive |
||
993 | cmp al,0Fh |
||
994 | jne extra_characters_on_line |
||
995 | call find_end_repeat |
||
996 | jmp instruction_assembled |
||
997 | find_end_repeat: |
||
31 | halyavin | 998 | call find_structure_end |
157 | heavyiron | 999 | cmp ax,repeat_directive-assembler |
1000 | jne unexpected_instruction |
||
1001 | ret |
||
1002 | while_directive: |
||
31 | halyavin | 1003 | cmp [prefixed_instruction],0 |
157 | heavyiron | 1004 | jne unexpected_instruction |
1005 | call allocate_structure_data |
||
1006 | mov word [ebx],while_directive-assembler |
||
1007 | mov eax,1 |
||
1008 | xchg eax,[counter] |
||
1009 | mov [ebx+10h],eax |
||
1010 | mov [ebx+8],esi |
||
1011 | mov eax,[current_line] |
||
1012 | mov [ebx+4],eax |
||
1013 | do_while: |
||
31 | halyavin | 1014 | push ebx |
157 | heavyiron | 1015 | call calculate_logical_expression |
1016 | or al,al |
||
1017 | jnz while_true |
||
1018 | mov al,[esi] |
||
1019 | or al,al |
||
1020 | jz missing_end_directive |
||
1021 | cmp al,0Fh |
||
1022 | jne extra_characters_on_line |
||
1023 | stop_while: |
||
31 | halyavin | 1024 | call find_end_while |
157 | heavyiron | 1025 | pop ebx |
1026 | mov eax,[ebx+10h] |
||
1027 | mov [counter],eax |
||
1028 | call remove_structure_data |
||
1029 | jmp instruction_assembled |
||
1030 | while_true: |
||
31 | halyavin | 1031 | pop ebx |
157 | heavyiron | 1032 | jmp instruction_assembled |
1033 | end_while: |
||
31 | halyavin | 1034 | cmp [prefixed_instruction],0 |
157 | heavyiron | 1035 | jne unexpected_instruction |
1036 | call find_structure_data |
||
1037 | jc unexpected_instruction |
||
1038 | mov eax,[ebx+4] |
||
1039 | mov [current_line],eax |
||
1040 | inc [counter] |
||
1041 | jz too_many_repeats |
||
1042 | mov esi,[ebx+8] |
||
1043 | jmp do_while |
||
1044 | find_end_while: |
||
31 | halyavin | 1045 | call find_structure_end |
157 | heavyiron | 1046 | cmp ax,while_directive-assembler |
1047 | jne unexpected_instruction |
||
1048 | ret |
||
1049 | if_directive: |
||
31 | halyavin | 1050 | cmp [prefixed_instruction],0 |
157 | heavyiron | 1051 | jne unexpected_instruction |
1052 | call calculate_logical_expression |
||
1053 | mov dl,al |
||
1054 | mov al,[esi] |
||
1055 | or al,al |
||
1056 | jz missing_end_directive |
||
1057 | cmp al,0Fh |
||
1058 | jne extra_characters_on_line |
||
1059 | or dl,dl |
||
1060 | jnz if_true |
||
1061 | call find_else |
||
1062 | jc instruction_assembled |
||
1063 | mov al,[esi] |
||
1064 | cmp al,1 |
||
1065 | jne else_true |
||
1066 | cmp word [esi+1],if_directive-assembler |
||
1067 | jne else_true |
||
1068 | add esi,4 |
||
1069 | jmp if_directive |
||
1070 | if_true: |
||
31 | halyavin | 1071 | xor al,al |
157 | heavyiron | 1072 | make_if_structure: |
31 | halyavin | 1073 | call allocate_structure_data |
157 | heavyiron | 1074 | mov word [ebx],if_directive-assembler |
1075 | mov byte [ebx+2],al |
||
1076 | mov eax,[current_line] |
||
1077 | mov [ebx+4],eax |
||
1078 | jmp instruction_assembled |
||
1079 | else_true: |
||
31 | halyavin | 1080 | or al,al |
157 | heavyiron | 1081 | jz missing_end_directive |
1082 | cmp al,0Fh |
||
1083 | jne extra_characters_on_line |
||
1084 | or al,-1 |
||
1085 | jmp make_if_structure |
||
1086 | else_directive: |
||
31 | halyavin | 1087 | cmp [prefixed_instruction],0 |
157 | heavyiron | 1088 | jne unexpected_instruction |
1089 | mov ax,if_directive-assembler |
||
1090 | call find_structure_data |
||
1091 | jc unexpected_instruction |
||
1092 | cmp byte [ebx+2],0 |
||
1093 | jne unexpected_instruction |
||
1094 | found_else: |
||
31 | halyavin | 1095 | mov al,[esi] |
157 | heavyiron | 1096 | cmp al,1 |
1097 | jne skip_else |
||
1098 | cmp word [esi+1],if_directive-assembler |
||
1099 | jne skip_else |
||
1100 | add esi,4 |
||
1101 | call find_else |
||
1102 | jnc found_else |
||
1103 | call remove_structure_data |
||
1104 | jmp instruction_assembled |
||
1105 | skip_else: |
||
31 | halyavin | 1106 | or al,al |
157 | heavyiron | 1107 | jz missing_end_directive |
1108 | cmp al,0Fh |
||
1109 | jne extra_characters_on_line |
||
1110 | call find_end_if |
||
1111 | call remove_structure_data |
||
1112 | jmp instruction_assembled |
||
1113 | end_if: |
||
31 | halyavin | 1114 | cmp [prefixed_instruction],0 |
157 | heavyiron | 1115 | jne unexpected_instruction |
1116 | call find_structure_data |
||
1117 | jc unexpected_instruction |
||
1118 | call remove_structure_data |
||
1119 | jmp instruction_assembled |
||
1120 | find_else: |
||
31 | halyavin | 1121 | call find_structure_end |
157 | heavyiron | 1122 | cmp ax,else_directive-assembler |
1123 | je else_found |
||
1124 | cmp ax,if_directive-assembler |
||
1125 | jne unexpected_instruction |
||
1126 | stc |
||
1127 | ret |
||
1128 | else_found: |
||
31 | halyavin | 1129 | clc |
157 | heavyiron | 1130 | ret |
1131 | find_end_if: |
||
31 | halyavin | 1132 | call find_structure_end |
157 | heavyiron | 1133 | cmp ax,if_directive-assembler |
1134 | jne unexpected_instruction |
||
1135 | ret |
||
1136 | find_structure_end: |
||
31 | halyavin | 1137 | push [error_line] |
157 | heavyiron | 1138 | mov eax,[current_line] |
1139 | mov [error_line],eax |
||
1140 | find_end_directive: |
||
31 | halyavin | 1141 | call skip_line |
157 | heavyiron | 1142 | lods byte [esi] |
1143 | cmp al,0Fh |
||
1144 | jne no_end_directive |
||
1145 | lods dword [esi] |
||
1146 | mov [current_line],eax |
||
1147 | skip_labels: |
||
31 | halyavin | 1148 | cmp byte [esi],2 |
157 | heavyiron | 1149 | jne labels_ok |
1150 | add esi,6 |
||
1151 | jmp skip_labels |
||
1152 | labels_ok: |
||
31 | halyavin | 1153 | cmp byte [esi],1 |
157 | heavyiron | 1154 | jne find_end_directive |
1155 | mov ax,[esi+1] |
||
1156 | cmp ax,prefix_instruction-assembler |
||
1157 | je find_end_directive |
||
1158 | add esi,4 |
||
1159 | cmp ax,repeat_directive-assembler |
||
1160 | je skip_repeat |
||
1161 | cmp ax,while_directive-assembler |
||
1162 | je skip_while |
||
1163 | cmp ax,if_directive-assembler |
||
1164 | je skip_if |
||
1165 | cmp ax,else_directive-assembler |
||
1166 | je structure_end |
||
1167 | cmp ax,end_directive-assembler |
||
1168 | jne find_end_directive |
||
1169 | cmp byte [esi],1 |
||
1170 | jne find_end_directive |
||
1171 | mov ax,[esi+1] |
||
1172 | add esi,4 |
||
1173 | cmp ax,repeat_directive-assembler |
||
1174 | je structure_end |
||
1175 | cmp ax,while_directive-assembler |
||
1176 | je structure_end |
||
1177 | cmp ax,if_directive-assembler |
||
1178 | jne find_end_directive |
||
1179 | structure_end: |
||
31 | halyavin | 1180 | pop [error_line] |
157 | heavyiron | 1181 | ret |
1182 | no_end_directive: |
||
31 | halyavin | 1183 | mov eax,[error_line] |
157 | heavyiron | 1184 | mov [current_line],eax |
1185 | jmp missing_end_directive |
||
1186 | skip_repeat: |
||
31 | halyavin | 1187 | call find_end_repeat |
157 | heavyiron | 1188 | jmp find_end_directive |
1189 | skip_while: |
||
31 | halyavin | 1190 | call find_end_while |
157 | heavyiron | 1191 | jmp find_end_directive |
1192 | skip_if: |
||
31 | halyavin | 1193 | call skip_if_block |
157 | heavyiron | 1194 | jmp find_end_directive |
1195 | skip_if_block: |
||
31 | halyavin | 1196 | call find_else |
157 | heavyiron | 1197 | jc if_block_skipped |
1198 | cmp byte [esi],1 |
||
1199 | jne skip_after_else |
||
1200 | cmp word [esi+1],if_directive-assembler |
||
1201 | jne skip_after_else |
||
1202 | add esi,4 |
||
1203 | jmp skip_if_block |
||
1204 | skip_after_else: |
||
31 | halyavin | 1205 | call find_end_if |
157 | heavyiron | 1206 | if_block_skipped: |
31 | halyavin | 1207 | ret |
157 | heavyiron | 1208 | end_directive: |
31 | halyavin | 1209 | lods byte [esi] |
157 | heavyiron | 1210 | cmp al,1 |
1211 | jne invalid_argument |
||
1212 | lods word [esi] |
||
1213 | inc esi |
||
1214 | cmp ax,virtual_directive-assembler |
||
1215 | je end_virtual |
||
1216 | cmp ax,repeat_directive-assembler |
||
1217 | je end_repeat |
||
1218 | cmp ax,while_directive-assembler |
||
1219 | je end_while |
||
1220 | cmp ax,if_directive-assembler |
||
1221 | je end_if |
||
1222 | cmp ax,data_directive-assembler |
||
1223 | je end_data |
||
1224 | jmp invalid_argument |
||
1225 | break_directive: |
||
31 | halyavin | 1226 | mov ebx,[structures_buffer] |
157 | heavyiron | 1227 | mov al,[esi] |
1228 | or al,al |
||
1229 | jz find_breakable_structure |
||
1230 | cmp al,0Fh |
||
1231 | jne extra_characters_on_line |
||
1232 | find_breakable_structure: |
||
31 | halyavin | 1233 | cmp ebx,[additional_memory_end] |
157 | heavyiron | 1234 | je unexpected_instruction |
1235 | mov ax,[ebx] |
||
1236 | cmp ax,repeat_directive-assembler |
||
1237 | je break_repeat |
||
1238 | cmp ax,while_directive-assembler |
||
1239 | je break_while |
||
1240 | cmp ax,if_directive-assembler |
||
1241 | je break_if |
||
1242 | add ebx,20h |
||
1243 | jmp find_breakable_structure |
||
1244 | break_if: |
||
31 | halyavin | 1245 | push [current_line] |
157 | heavyiron | 1246 | mov eax,[ebx+4] |
1247 | mov [current_line],eax |
||
1248 | call remove_structure_data |
||
1249 | call skip_if_block |
||
1250 | pop [current_line] |
||
1251 | mov ebx,[structures_buffer] |
||
1252 | jmp find_breakable_structure |
||
1253 | break_repeat: |
||
31 | halyavin | 1254 | push ebx |
157 | heavyiron | 1255 | call find_end_repeat |
1256 | pop ebx |
||
1257 | jmp stop_repeat |
||
1258 | break_while: |
||
31 | halyavin | 1259 | push ebx |
157 | heavyiron | 1260 | jmp stop_while |
1261 | |||
31 | halyavin | 1262 | |
1263 | call define_data |
||
157 | heavyiron | 1264 | lods byte [esi] |
1265 | cmp al,'(' |
||
1266 | je get_byte |
||
1267 | cmp al,'?' |
||
1268 | jne invalid_argument |
||
1269 | mov eax,edi |
||
1270 | mov byte [edi],0 |
||
1271 | inc edi |
||
1272 | jmp undefined_data |
||
1273 | get_byte: |
||
31 | halyavin | 1274 | cmp byte [esi],0 |
157 | heavyiron | 1275 | je get_string |
1276 | call get_byte_value |
||
1277 | stos byte [edi] |
||
1278 | ret |
||
1279 | get_string: |
||
31 | halyavin | 1280 | inc esi |
157 | heavyiron | 1281 | lods dword [esi] |
1282 | mov ecx,eax |
||
1283 | lea eax,[edi+ecx] |
||
1284 | cmp eax,[display_buffer] |
||
1285 | ja out_of_memory |
||
1286 | rep movs byte [edi],[esi] |
||
1287 | inc esi |
||
1288 | ret |
||
1289 | undefined_data: |
||
31 | halyavin | 1290 | cmp [virtual_data],0 |
157 | heavyiron | 1291 | je mark_undefined_data |
1292 | ret |
||
1293 | mark_undefined_data: |
||
31 | halyavin | 1294 | cmp eax,[undefined_data_end] |
157 | heavyiron | 1295 | je undefined_data_ok |
1296 | mov [undefined_data_start],eax |
||
1297 | undefined_data_ok: |
||
31 | halyavin | 1298 | mov [undefined_data_end],edi |
157 | heavyiron | 1299 | ret |
1300 | define_data: |
||
31 | halyavin | 1301 | cmp edi,[display_buffer] |
157 | heavyiron | 1302 | jae out_of_memory |
1303 | cmp byte [esi],'(' |
||
1304 | jne simple_data_value |
||
1305 | mov ebx,esi |
||
1306 | inc esi |
||
1307 | call skip_expression |
||
1308 | xchg esi,ebx |
||
1309 | cmp byte [ebx],81h |
||
1310 | jne simple_data_value |
||
1311 | inc esi |
||
1312 | call get_dword_value |
||
1313 | cmp [next_pass_needed],0 |
||
1314 | jne dup_value_ok |
||
1315 | cmp [value_type],0 |
||
1316 | jne invalid_use_of_symbol |
||
1317 | dup_value_ok: |
||
31 | halyavin | 1318 | inc esi |
157 | heavyiron | 1319 | cmp eax,0 |
1320 | jg dup_positive |
||
1321 | cmp [error_line],0 |
||
1322 | jne dup_invalid |
||
1323 | mov eax,[current_line] |
||
1324 | mov [error_line],eax |
||
1325 | mov [error],invalid_value |
||
1326 | dup_invalid: |
||
31 | halyavin | 1327 | mov eax,1 |
157 | heavyiron | 1328 | dup_positive: |
31 | halyavin | 1329 | cmp byte [esi],'{' |
157 | heavyiron | 1330 | jne duplicate_single_data_value |
1331 | inc esi |
||
1332 | duplicate_data: |
||
31 | halyavin | 1333 | push eax esi |
157 | heavyiron | 1334 | duplicated_values: |
31 | halyavin | 1335 | cmp edi,[display_buffer] |
157 | heavyiron | 1336 | jae out_of_memory |
1337 | call near dword [esp+8] |
||
1338 | lods byte [esi] |
||
1339 | cmp al,',' |
||
1340 | je duplicated_values |
||
1341 | cmp al,'}' |
||
1342 | jne invalid_argument |
||
1343 | pop ebx eax |
||
1344 | dec eax |
||
1345 | jz data_defined |
||
1346 | mov esi,ebx |
||
1347 | jmp duplicate_data |
||
1348 | duplicate_single_data_value: |
||
31 | halyavin | 1349 | cmp edi,[display_buffer] |
157 | heavyiron | 1350 | jae out_of_memory |
1351 | push eax esi |
||
1352 | call near dword [esp+8] |
||
1353 | pop ebx eax |
||
1354 | dec eax |
||
1355 | jz data_defined |
||
1356 | mov esi,ebx |
||
1357 | jmp duplicate_single_data_value |
||
1358 | simple_data_value: |
||
31 | halyavin | 1359 | cmp edi,[display_buffer] |
157 | heavyiron | 1360 | jae out_of_memory |
1361 | call near dword [esp] |
||
1362 | data_defined: |
||
31 | halyavin | 1363 | lods byte [esi] |
157 | heavyiron | 1364 | cmp al,',' |
1365 | je define_data |
||
1366 | dec esi |
||
1367 | add esp,4 |
||
1368 | jmp instruction_assembled |
||
1369 | data_unicode: |
||
31 | halyavin | 1370 | or [base_code],-1 |
157 | heavyiron | 1371 | jmp define_words |
1372 | data_words: |
||
31 | halyavin | 1373 | mov [base_code],0 |
157 | heavyiron | 1374 | define_words: |
31 | halyavin | 1375 | call define_data |
157 | heavyiron | 1376 | lods byte [esi] |
1377 | cmp al,'(' |
||
1378 | je get_word |
||
1379 | cmp al,'?' |
||
1380 | jne invalid_argument |
||
1381 | mov eax,edi |
||
1382 | mov word [edi],0 |
||
1383 | scas word [edi] |
||
1384 | jmp undefined_data |
||
1385 | ret |
||
1386 | get_word: |
||
31 | halyavin | 1387 | cmp [base_code],0 |
157 | heavyiron | 1388 | je word_data_value |
1389 | cmp byte [esi],0 |
||
1390 | je word_string |
||
1391 | word_data_value: |
||
31 | halyavin | 1392 | call get_word_value |
157 | heavyiron | 1393 | call mark_relocation |
1394 | stos word [edi] |
||
1395 | ret |
||
1396 | word_string: |
||
31 | halyavin | 1397 | inc esi |
157 | heavyiron | 1398 | lods dword [esi] |
1399 | mov ecx,eax |
||
1400 | jecxz word_string_ok |
||
1401 | lea eax,[edi+ecx*2] |
||
1402 | cmp eax,[display_buffer] |
||
1403 | ja out_of_memory |
||
1404 | xor ah,ah |
||
1405 | copy_word_string: |
||
31 | halyavin | 1406 | lods byte [esi] |
157 | heavyiron | 1407 | stos word [edi] |
1408 | loop copy_word_string |
||
1409 | word_string_ok: |
||
31 | halyavin | 1410 | inc esi |
157 | heavyiron | 1411 | ret |
1412 | data_dwords: |
||
31 | halyavin | 1413 | call define_data |
157 | heavyiron | 1414 | lods byte [esi] |
1415 | cmp al,'(' |
||
1416 | je get_dword |
||
1417 | cmp al,'?' |
||
1418 | jne invalid_argument |
||
1419 | mov eax,edi |
||
1420 | mov dword [edi],0 |
||
1421 | scas dword [edi] |
||
1422 | jmp undefined_data |
||
1423 | get_dword: |
||
31 | halyavin | 1424 | push esi |
157 | heavyiron | 1425 | call get_dword_value |
1426 | pop ebx |
||
1427 | cmp byte [esi],':' |
||
1428 | je complex_dword |
||
1429 | call mark_relocation |
||
1430 | stos dword [edi] |
||
1431 | ret |
||
1432 | complex_dword: |
||
31 | halyavin | 1433 | mov esi,ebx |
157 | heavyiron | 1434 | cmp byte [esi],'.' |
1435 | je invalid_value |
||
1436 | call get_word_value |
||
1437 | push eax |
||
1438 | inc esi |
||
1439 | lods byte [esi] |
||
1440 | cmp al,'(' |
||
1441 | jne invalid_operand |
||
1442 | mov al,[value_type] |
||
1443 | push eax |
||
1444 | cmp byte [esi],'.' |
||
1445 | je invalid_value |
||
1446 | call get_word_value |
||
1447 | call mark_relocation |
||
1448 | stos word [edi] |
||
1449 | pop eax |
||
1450 | mov [value_type],al |
||
1451 | pop eax |
||
1452 | call mark_relocation |
||
1453 | stos word [edi] |
||
1454 | ret |
||
1455 | data_pwords: |
||
31 | halyavin | 1456 | call define_data |
157 | heavyiron | 1457 | lods byte [esi] |
1458 | cmp al,'(' |
||
1459 | je get_pword |
||
1460 | cmp al,'?' |
||
1461 | jne invalid_argument |
||
1462 | mov eax,edi |
||
1463 | mov dword [edi],0 |
||
1464 | scas dword [edi] |
||
1465 | mov word [edi],0 |
||
1466 | scas word [edi] |
||
1467 | jmp undefined_data |
||
1468 | get_pword: |
||
31 | halyavin | 1469 | push esi |
157 | heavyiron | 1470 | call get_pword_value |
1471 | pop ebx |
||
1472 | cmp byte [esi],':' |
||
1473 | je complex_pword |
||
1474 | call mark_relocation |
||
1475 | stos dword [edi] |
||
1476 | mov ax,dx |
||
1477 | stos word [edi] |
||
1478 | ret |
||
1479 | complex_pword: |
||
31 | halyavin | 1480 | mov esi,ebx |
157 | heavyiron | 1481 | cmp byte [esi],'.' |
1482 | je invalid_value |
||
1483 | call get_word_value |
||
1484 | push eax |
||
1485 | inc esi |
||
1486 | lods byte [esi] |
||
1487 | cmp al,'(' |
||
1488 | jne invalid_operand |
||
1489 | mov al,[value_type] |
||
1490 | push eax |
||
1491 | cmp byte [esi],'.' |
||
1492 | je invalid_value |
||
1493 | call get_dword_value |
||
1494 | call mark_relocation |
||
1495 | stos dword [edi] |
||
1496 | pop eax |
||
1497 | mov [value_type],al |
||
1498 | pop eax |
||
1499 | call mark_relocation |
||
1500 | stos word [edi] |
||
1501 | ret |
||
1502 | data_qwords: |
||
31 | halyavin | 1503 | call define_data |
157 | heavyiron | 1504 | lods byte [esi] |
1505 | cmp al,'(' |
||
1506 | je get_qword |
||
1507 | cmp al,'?' |
||
1508 | jne invalid_argument |
||
1509 | mov eax,edi |
||
1510 | mov dword [edi],0 |
||
1511 | scas dword [edi] |
||
1512 | mov dword [edi],0 |
||
1513 | scas dword [edi] |
||
1514 | jmp undefined_data |
||
1515 | get_qword: |
||
31 | halyavin | 1516 | call get_qword_value |
157 | heavyiron | 1517 | call mark_relocation |
1518 | stos dword [edi] |
||
1519 | mov eax,edx |
||
1520 | stos dword [edi] |
||
1521 | ret |
||
1522 | data_twords: |
||
31 | halyavin | 1523 | call define_data |
157 | heavyiron | 1524 | lods byte [esi] |
1525 | cmp al,'(' |
||
1526 | je get_tword |
||
1527 | cmp al,'?' |
||
1528 | jne invalid_argument |
||
1529 | mov eax,edi |
||
1530 | mov dword [edi],0 |
||
1531 | scas dword [edi] |
||
1532 | mov dword [edi],0 |
||
1533 | scas dword [edi] |
||
1534 | mov word [edi],0 |
||
1535 | scas word [edi] |
||
1536 | jmp undefined_data |
||
1537 | get_tword: |
||
31 | halyavin | 1538 | cmp byte [esi],'.' |
157 | heavyiron | 1539 | jne complex_tword |
1540 | inc esi |
||
1541 | cmp word [esi+8],8000h |
||
1542 | je fp_zero_tword |
||
1543 | mov eax,[esi] |
||
1544 | stos dword [edi] |
||
1545 | mov eax,[esi+4] |
||
1546 | stos dword [edi] |
||
1547 | mov ax,[esi+8] |
||
1548 | add ax,3FFFh |
||
1549 | cmp ax,8000h |
||
1550 | jae value_out_of_range |
||
1551 | mov bl,[esi+11] |
||
1552 | shl bx,15 |
||
1553 | or ax,bx |
||
1554 | stos word [edi] |
||
1555 | add esi,13 |
||
1556 | ret |
||
1557 | fp_zero_tword: |
||
31 | halyavin | 1558 | xor eax,eax |
157 | heavyiron | 1559 | stos dword [edi] |
1560 | stos dword [edi] |
||
1561 | mov al,[esi+11] |
||
1562 | shl ax,15 |
||
1563 | stos word [edi] |
||
1564 | add esi,13 |
||
1565 | ret |
||
1566 | complex_tword: |
||
31 | halyavin | 1567 | call get_word_value |
157 | heavyiron | 1568 | push eax |
1569 | inc esi |
||
1570 | lods byte [esi] |
||
1571 | cmp al,'(' |
||
1572 | jne invalid_operand |
||
1573 | mov al,[value_type] |
||
1574 | push eax |
||
1575 | cmp byte [esi],'.' |
||
1576 | je invalid_value |
||
1577 | call get_qword_value |
||
1578 | call mark_relocation |
||
1579 | stos dword [edi] |
||
1580 | mov eax,edx |
||
1581 | stos dword [edi] |
||
1582 | pop eax |
||
1583 | mov [value_type],al |
||
1584 | pop eax |
||
1585 | call mark_relocation |
||
1586 | stos word [edi] |
||
1587 | ret |
||
1588 | data_file: |
||
31 | halyavin | 1589 | lods word [esi] |
157 | heavyiron | 1590 | cmp ax,'(' |
1591 | jne invalid_argument |
||
1592 | add esi,4 |
||
1593 | call open_binary_file |
||
1594 | mov eax,[esi-4] |
||
1595 | lea esi,[esi+eax+1] |
||
1596 | mov al,2 |
||
1597 | xor edx,edx |
||
1598 | call lseek |
||
1599 | push eax |
||
1600 | xor edx,edx |
||
1601 | cmp byte [esi],':' |
||
1602 | jne position_ok |
||
1603 | inc esi |
||
1604 | cmp byte [esi],'(' |
||
1605 | jne invalid_argument |
||
1606 | inc esi |
||
1607 | cmp byte [esi],'.' |
||
1608 | je invalid_value |
||
1609 | push ebx |
||
1610 | call get_dword_value |
||
1611 | pop ebx |
||
1612 | mov edx,eax |
||
1613 | sub [esp],edx |
||
1614 | position_ok: |
||
31 | halyavin | 1615 | cmp byte [esi],',' |
157 | heavyiron | 1616 | jne size_ok |
1617 | inc esi |
||
1618 | cmp byte [esi],'(' |
||
1619 | jne invalid_argument |
||
1620 | inc esi |
||
1621 | cmp byte [esi],'.' |
||
1622 | je invalid_value |
||
1623 | push ebx edx |
||
1624 | call get_dword_value |
||
1625 | pop edx ebx |
||
1626 | mov [esp],eax |
||
1627 | size_ok: |
||
31 | halyavin | 1628 | xor al,al |
157 | heavyiron | 1629 | call lseek |
1630 | pop ecx |
||
1631 | mov edx,edi |
||
1632 | add edi,ecx |
||
1633 | jc out_of_memory |
||
1634 | cmp edi,[display_buffer] |
||
1635 | ja out_of_memory |
||
1636 | call read |
||
1637 | jc error_reading_file |
||
1638 | call close |
||
1639 | lods byte [esi] |
||
1640 | cmp al,',' |
||
1641 | je data_file |
||
1642 | dec esi |
||
1643 | jmp instruction_assembled |
||
1644 | open_binary_file: |
||
31 | halyavin | 1645 | push esi |
157 | heavyiron | 1646 | push edi |
1647 | mov esi,[current_line] |
||
1648 | mov esi,[esi] |
||
1649 | get_current_path: |
||
31 | halyavin | 1650 | lodsb |
157 | heavyiron | 1651 | stosb |
1652 | or al,al |
||
1653 | jnz get_current_path |
||
1654 | cut_current_path: |
||
31 | halyavin | 1655 | cmp edi,[esp] |
157 | heavyiron | 1656 | je current_path_ok |
1657 | cmp byte [edi-1],'\' |
||
1658 | je current_path_ok |
||
1659 | cmp byte [edi-1],'/' |
||
1660 | je current_path_ok |
||
1661 | dec edi |
||
1662 | jmp cut_current_path |
||
1663 | current_path_ok: |
||
31 | halyavin | 1664 | mov esi,[esp+4] |
157 | heavyiron | 1665 | call preprocess_path |
1666 | pop edx |
||
1667 | mov esi,edx |
||
1668 | call open |
||
1669 | jnc file_opened |
||
1670 | mov edi,esi |
||
1671 | mov esi,[esp] |
||
1672 | push edi |
||
1673 | call preprocess_path |
||
1674 | pop edx |
||
1675 | mov esi,edx |
||
1676 | call open |
||
1677 | jc file_not_found |
||
1678 | file_opened: |
||
31 | halyavin | 1679 | mov edi,esi |
157 | heavyiron | 1680 | pop esi |
1681 | ret |
||
1682 | reserve_bytes: |
||
31 | halyavin | 1683 | lods byte [esi] |
157 | heavyiron | 1684 | cmp al,'(' |
1685 | jne invalid_argument |
||
1686 | cmp byte [esi],'.' |
||
1687 | je invalid_value |
||
1688 | call get_dword_value |
||
1689 | cmp [next_pass_needed],0 |
||
1690 | jne rb_value_ok |
||
1691 | cmp [value_type],0 |
||
1692 | jne invalid_use_of_symbol |
||
1693 | rb_value_ok: |
||
31 | halyavin | 1694 | cmp eax,0 |
157 | heavyiron | 1695 | jl reserve_negative |
1696 | mov ecx,eax |
||
1697 | mov edx,ecx |
||
1698 | add edx,edi |
||
1699 | jc out_of_memory |
||
1700 | cmp edx,[display_buffer] |
||
1701 | ja out_of_memory |
||
1702 | push edi |
||
1703 | cmp [next_pass_needed],0 |
||
1704 | je zero_bytes |
||
1705 | add edi,ecx |
||
1706 | jmp reserved_data |
||
1707 | zero_bytes: |
||
31 | halyavin | 1708 | xor eax,eax |
157 | heavyiron | 1709 | shr ecx,1 |
1710 | jnc bytes_stosb_ok |
||
1711 | stos byte [edi] |
||
1712 | bytes_stosb_ok: |
||
31 | halyavin | 1713 | shr ecx,1 |
157 | heavyiron | 1714 | jnc bytes_stosw_ok |
1715 | stos word [edi] |
||
1716 | bytes_stosw_ok: |
||
31 | halyavin | 1717 | rep stos dword [edi] |
157 | heavyiron | 1718 | reserved_data: |
31 | halyavin | 1719 | pop eax |
157 | heavyiron | 1720 | call undefined_data |
1721 | jmp instruction_assembled |
||
1722 | reserve_negative: |
||
31 | halyavin | 1723 | cmp [error_line],0 |
157 | heavyiron | 1724 | jne instruction_assembled |
1725 | mov eax,[current_line] |
||
1726 | mov [error_line],eax |
||
1727 | mov [error],invalid_value |
||
1728 | jmp instruction_assembled |
||
1729 | reserve_words: |
||
31 | halyavin | 1730 | lods byte [esi] |
157 | heavyiron | 1731 | cmp al,'(' |
1732 | jne invalid_argument |
||
1733 | cmp byte [esi],'.' |
||
1734 | je invalid_value |
||
1735 | call get_dword_value |
||
1736 | cmp [next_pass_needed],0 |
||
1737 | jne rw_value_ok |
||
1738 | cmp [value_type],0 |
||
1739 | jne invalid_use_of_symbol |
||
1740 | rw_value_ok: |
||
31 | halyavin | 1741 | cmp eax,0 |
157 | heavyiron | 1742 | jl reserve_negative |
1743 | mov ecx,eax |
||
1744 | mov edx,ecx |
||
1745 | shl edx,1 |
||
1746 | jc out_of_memory |
||
1747 | add edx,edi |
||
1748 | jc out_of_memory |
||
1749 | cmp edx,[display_buffer] |
||
1750 | ja out_of_memory |
||
1751 | push edi |
||
1752 | cmp [next_pass_needed],0 |
||
1753 | je zero_words |
||
1754 | lea edi,[edi+ecx*2] |
||
1755 | jmp reserved_data |
||
1756 | zero_words: |
||
31 | halyavin | 1757 | xor eax,eax |
157 | heavyiron | 1758 | shr ecx,1 |
1759 | jnc words_stosw_ok |
||
1760 | stos word [edi] |
||
1761 | words_stosw_ok: |
||
31 | halyavin | 1762 | rep stos dword [edi] |
157 | heavyiron | 1763 | jmp reserved_data |
1764 | reserve_dwords: |
||
31 | halyavin | 1765 | lods byte [esi] |
157 | heavyiron | 1766 | cmp al,'(' |
1767 | jne invalid_argument |
||
1768 | cmp byte [esi],'.' |
||
1769 | je invalid_value |
||
1770 | call get_dword_value |
||
1771 | cmp [next_pass_needed],0 |
||
1772 | jne rd_value_ok |
||
1773 | cmp [value_type],0 |
||
1774 | jne invalid_use_of_symbol |
||
1775 | rd_value_ok: |
||
31 | halyavin | 1776 | cmp eax,0 |
157 | heavyiron | 1777 | jl reserve_negative |
1778 | mov ecx,eax |
||
1779 | mov edx,ecx |
||
1780 | shl edx,1 |
||
1781 | jc out_of_memory |
||
1782 | shl edx,1 |
||
1783 | jc out_of_memory |
||
1784 | add edx,edi |
||
1785 | jc out_of_memory |
||
1786 | cmp edx,[display_buffer] |
||
1787 | ja out_of_memory |
||
1788 | push edi |
||
1789 | cmp [next_pass_needed],0 |
||
1790 | je zero_dwords |
||
1791 | lea edi,[edi+ecx*4] |
||
1792 | jmp reserved_data |
||
1793 | zero_dwords: |
||
31 | halyavin | 1794 | xor eax,eax |
157 | heavyiron | 1795 | rep stos dword [edi] |
1796 | jmp reserved_data |
||
1797 | reserve_pwords: |
||
31 | halyavin | 1798 | lods byte [esi] |
157 | heavyiron | 1799 | cmp al,'(' |
1800 | jne invalid_argument |
||
1801 | cmp byte [esi],'.' |
||
1802 | je invalid_value |
||
1803 | call get_dword_value |
||
1804 | cmp [next_pass_needed],0 |
||
1805 | jne rp_value_ok |
||
1806 | cmp [value_type],0 |
||
1807 | jne invalid_use_of_symbol |
||
1808 | rp_value_ok: |
||
31 | halyavin | 1809 | cmp eax,0 |
157 | heavyiron | 1810 | jl reserve_negative |
1811 | mov ecx,eax |
||
1812 | shl ecx,1 |
||
1813 | jc out_of_memory |
||
1814 | add ecx,eax |
||
1815 | mov edx,ecx |
||
1816 | shl edx,1 |
||
1817 | jc out_of_memory |
||
1818 | add edx,edi |
||
1819 | jc out_of_memory |
||
1820 | cmp edx,[display_buffer] |
||
1821 | ja out_of_memory |
||
1822 | push edi |
||
1823 | cmp [next_pass_needed],0 |
||
1824 | je zero_words |
||
1825 | lea edi,[edi+ecx*2] |
||
1826 | jmp reserved_data |
||
1827 | reserve_qwords: |
||
31 | halyavin | 1828 | lods byte [esi] |
157 | heavyiron | 1829 | cmp al,'(' |
1830 | jne invalid_argument |
||
1831 | cmp byte [esi],'.' |
||
1832 | je invalid_value |
||
1833 | call get_dword_value |
||
1834 | cmp [next_pass_needed],0 |
||
1835 | jne rq_value_ok |
||
1836 | cmp [value_type],0 |
||
1837 | jne invalid_use_of_symbol |
||
1838 | rq_value_ok: |
||
31 | halyavin | 1839 | cmp eax,0 |
157 | heavyiron | 1840 | jl reserve_negative |
1841 | mov ecx,eax |
||
1842 | shl ecx,1 |
||
1843 | jc out_of_memory |
||
1844 | mov edx,ecx |
||
1845 | shl edx,1 |
||
1846 | jc out_of_memory |
||
1847 | shl edx,1 |
||
1848 | jc out_of_memory |
||
1849 | add edx,edi |
||
1850 | jc out_of_memory |
||
1851 | cmp edx,[display_buffer] |
||
1852 | ja out_of_memory |
||
1853 | push edi |
||
1854 | cmp [next_pass_needed],0 |
||
1855 | je zero_dwords |
||
1856 | lea edi,[edi+ecx*4] |
||
1857 | jmp reserved_data |
||
1858 | reserve_twords: |
||
31 | halyavin | 1859 | lods byte [esi] |
157 | heavyiron | 1860 | cmp al,'(' |
1861 | jne invalid_argument |
||
1862 | cmp byte [esi],'.' |
||
1863 | je invalid_value |
||
1864 | call get_dword_value |
||
1865 | cmp [next_pass_needed],0 |
||
1866 | jne rt_value_ok |
||
1867 | cmp [value_type],0 |
||
1868 | jne invalid_use_of_symbol |
||
1869 | rt_value_ok: |
||
31 | halyavin | 1870 | cmp eax,0 |
157 | heavyiron | 1871 | jl reserve_negative |
1872 | mov ecx,eax |
||
1873 | shl ecx,2 |
||
1874 | jc out_of_memory |
||
1875 | add ecx,eax |
||
1876 | mov edx,ecx |
||
1877 | shl edx,1 |
||
1878 | jc out_of_memory |
||
1879 | add edx,edi |
||
1880 | jc out_of_memory |
||
1881 | cmp edx,[display_buffer] |
||
1882 | ja out_of_memory |
||
1883 | push edi |
||
1884 | cmp [next_pass_needed],0 |
||
1885 | je zero_words |
||
1886 | lea edi,[edi+ecx*2] |
||
1887 | jmp reserved_data |
||
1888 | align_directive: |
||
31 | halyavin | 1889 | lods byte [esi] |
157 | heavyiron | 1890 | cmp al,'(' |
1891 | jne invalid_argument |
||
1892 | cmp byte [esi],'.' |
||
1893 | je invalid_value |
||
1894 | call get_dword_value |
||
1895 | cmp [value_type],0 |
||
1896 | jne invalid_use_of_symbol |
||
1897 | mov edx,eax |
||
1898 | dec edx |
||
1899 | test eax,edx |
||
1900 | jnz negative_times |
||
1901 | or eax,eax |
||
1902 | jz negative_times |
||
1903 | cmp eax,1 |
||
1904 | je instruction_assembled |
||
1905 | mov ecx,edi |
||
1906 | sub ecx,dword [org_origin] |
||
1907 | cmp [org_registers],0 |
||
1908 | jne section_not_aligned_enough |
||
1909 | cmp [labels_type],0 |
||
1910 | je make_alignment |
||
1911 | cmp [output_format],3 |
||
1912 | je pe_alignment |
||
1913 | mov ebx,[org_symbol] |
||
1914 | cmp byte [ebx],0 |
||
1915 | jne section_not_aligned_enough |
||
1916 | cmp eax,[ebx+10h] |
||
1917 | jbe make_alignment |
||
1918 | jmp section_not_aligned_enough |
||
1919 | pe_alignment: |
||
31 | halyavin | 1920 | cmp eax,1000h |
157 | heavyiron | 1921 | ja section_not_aligned_enough |
1922 | make_alignment: |
||
31 | halyavin | 1923 | dec eax |
157 | heavyiron | 1924 | and ecx,eax |
1925 | jz instruction_assembled |
||
1926 | neg ecx |
||
1927 | add ecx,eax |
||
1928 | inc ecx |
||
1929 | mov edx,ecx |
||
1930 | add edx,edi |
||
1931 | jc out_of_memory |
||
1932 | cmp edx,[display_buffer] |
||
1933 | ja out_of_memory |
||
1934 | push edi |
||
1935 | cmp [next_pass_needed],0 |
||
1936 | je nops |
||
1937 | add edi,ecx |
||
1938 | jmp reserved_data |
||
1939 | nops: |
||
31 | halyavin | 1940 | mov eax,90909090h |
157 | heavyiron | 1941 | shr ecx,1 |
1942 | jnc nops_stosb_ok |
||
1943 | stos byte [edi] |
||
1944 | nops_stosb_ok: |
||
31 | halyavin | 1945 | shr ecx,1 |
157 | heavyiron | 1946 | jnc nops_stosw_ok |
1947 | stos word [edi] |
||
1948 | nops_stosw_ok: |
||
31 | halyavin | 1949 | rep stos dword [edi] |
157 | heavyiron | 1950 | jmp reserved_data |
1951 |