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comparison doc/pseudo ops.txt @ 96:7fbccdd1defb
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| author | lost |
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| date | Sat, 17 Jan 2009 07:09:02 +0000 |
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| 95:f3497072ac44 | 96:7fbccdd1defb |
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| 1 The following pseudo operations are understood by LWASM. | |
| 2 | |
| 3 SECTION <name> | |
| 4 | |
| 5 This introduces a section called <name>. This is only valid if assembling to | |
| 6 an object file. Only one section can be open at any given time. Sections | |
| 7 may be ended with ENDSECTION. Only one section can be open at any given | |
| 8 time. A subsequent SECTION directive will end the previous section. It is | |
| 9 important to note that an end of file does not close the currently open | |
| 10 section. There cannot be a symbol on a SECTION line. | |
| 11 | |
| 12 ENDSECTION | |
| 13 | |
| 14 Specifies the end of a section. This is optional. There cannot be a symbol | |
| 15 on an ENDSECTION line. | |
| 16 | |
| 17 ORG <addr> | |
| 18 | |
| 19 Specifies the assembly address. For the raw target, this is advisory and | |
| 20 only affects the addresses of symbols. For the object file target, this can | |
| 21 only appear outside of all sections. For the DECB target, each ORG statement | |
| 22 after which any output is generated will generate a segment in the output | |
| 23 file. <addr> must be completely resolved during pass 1 of the assembly | |
| 24 process and thus may not refer to forward references or external symbols, or | |
| 25 other symbols that refer to such. | |
| 26 | |
| 27 <symbol> EQU <value> | |
| 28 | |
| 29 Makes <symbol> equivalent to <value>. <value> may be an external reference | |
| 30 in which case any references to <symbol> will also be external references. | |
| 31 | |
| 32 EXPORT <symbol>[ as <name>] | |
| 33 | |
| 34 Marks previously defined <symbol> for export. If <name> is specified, it | |
| 35 will be exported as <name>. <symbol> must not be an external reference and | |
| 36 must be defined before EXPORT. | |
| 37 | |
| 38 EXTERN <symbol>[ as <name>] | |
| 39 IMPORT <symbol>[ as <name>] | |
| 40 | |
| 41 Marks <symbol> as an external reference. If <name> is specified, <name> is | |
| 42 the local name the symbol is references as in this assembly file while | |
| 43 <symbol> is the actual symbol to be referenced externally. | |
| 44 | |
| 45 END [<addr>] | |
| 46 | |
| 47 Marks the end of the assembly process. Immediately terminates assembly | |
| 48 without processing any other lines in this file or any others. It is | |
| 49 optional. <addr> is only allowed for the DECB target in which case it | |
| 50 specifies the execution address. If it is not specified, the address | |
| 51 defaults to 0. |