GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
Unix |
Unix v7 |
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as(1) |
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as − assembler
as [ − ] [ −o objfile ] file ...
As assembles the concatenation of the named files. If the optional first argument − is used, all undefined symbols in the assembly are treated as global.
The output of the assembly is left on the file objfile; if that is omitted, a.out is used. It is executable if no errors occurred during the assembly, and if there were no unresolved external references.
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/lib/as2 |
pass 2 of the assembler | ||||
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/tmp/atm[1-3]? |
temporary | ||||
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a.out |
object |
ld(1), nm(1),
adb(1), a.out(5)
UNIX Assembler Manual by D. M. Ritchie
When an input file cannot be read, its name followed by a question mark is typed and assembly ceases. When syntactic or semantic errors occur, a single-character diagnostic is typed out together with the line number and the file name in which it occurred. Errors in pass 1 cause cancellation of pass 2. The possible errors are:
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) | ||
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Parentheses error | ||
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] | ||
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Parentheses error | ||
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< | ||
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String not terminated properly | ||
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* | ||
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Indirection used illegally | ||
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. | ||
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Illegal assignment to ’.’ | ||
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a | ||
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Error in address | ||
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b | ||
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Branch instruction is odd or too remote | ||
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e | ||
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Error in expression | ||
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f | ||
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Error in local (’f’ or ’b’) type symbol | ||
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g | ||
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Garbage (unknown) character | ||
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i | ||
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End of file inside an if | ||
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m | ||
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Multiply defined symbol as label | ||
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o | ||
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Word quantity assembled at odd address | ||
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p | ||
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’.’ different in pass 1 and 2 | ||
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r | ||
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Relocation error | ||
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u | ||
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Undefined symbol | ||
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x | ||
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Syntax error |
Syntax errors can cause incorrect line numbers in following diagnostics.
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as(1) | |