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1 | #include <stdlib.h> |
2 | #include <string.h> |
3 | |
4 | #include "data_block.hh" |
5 | #include "data_block_0.hh" |
6 | |
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7 | #include <stdio.h> |
8 | |
9 | using namespace std; |
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10 | |
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11 | /*! |
12 | *\brief Specialisation constructor. |
13 | */ |
14 | data_block::data_block(tape_block& org) |
15 | :tape_block(org) |
16 | {} |
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17 | |
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18 | /*! |
19 | *\brief Determine block type. |
20 | *\return the block type extracted from the block's data. |
21 | */ |
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22 | int data_block::get_type(){ |
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23 | return (word_data[0]&0xf000)>>12; |
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24 | } |
25 | |
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26 | /*! |
27 | *\brief Get the block's size in 16 bit words. |
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28 | *\return The block's 16-bit data buffer's size including |
29 | * header and checksum. |
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30 | */ |
31 | int data_block::get_word_size(){ |
32 | return word_size; |
33 | } |
34 | |
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35 | /*! |
36 | *\brief Describe the block. |
37 | *\return A vector of text lines describing this block. |
38 | */ |
39 | vector<string> data_block::get_description(){ |
40 | vector<string> result; |
41 | string r_string="***** "+get_typestring()+"Untyped data block, this \ |
42 | is an illegal condition!"; |
43 | result.insert(result.end(),r_string); |
44 | return result; |
45 | } |
46 | |
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47 | /*! |
48 | *\brief Determine if the block marks the end of an object |
49 | *\retval true The block marks the end of an object. |
50 | *\retval false The block does not mark the end of an object. |
51 | */ |
52 | bool data_block::get_obj_end(){ |
53 | return false; |
54 | } |
55 | |
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56 | /*! |
57 | *\brief Extract 6 byte symbol name from word memory. |
58 | * |
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59 | *\param firstbyte the first byte of the desired symbol name |
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60 | *\return a string containing the symbol name. |
61 | * Trailing spaces are included. |
62 | *\note The word_data is handled system-intependently big endian! |
63 | */ |
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64 | string data_block::extract_label(int firstbyte){ |
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65 | string result=""; // Start with empty string |
66 | |
67 | // We don't accept negative arguments! |
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68 | if (firstbyte<0) return result; |
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69 | |
70 | // We also don't want segmentation faults! |
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71 | if (word_size<(firstbyte/2+1)) return result; |
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72 | |
73 | // Here we pick out the characters. |
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74 | for (int posi=firstbyte;posi<firstbyte+6;posi++) |
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75 | result+=(word_data[posi/2]>>(8*(1-posi%2)))&0x7f; |
76 | return result; |
77 | } |
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78 | |