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diff lwasm/lwasm.c @ 210:5d969517db74
Added condundefzero pragma
Added pragma condundefzero to allow the assembler to treat symbols that are
undefined in a conditional expression as if their value had been set to
zero.
| author | William Astle <lost@l-w.ca> |
|---|---|
| date | Sat, 09 Jun 2012 16:25:19 -0600 |
| parents | 52d9dd71f555 |
| children | 6f2e18f1fe67 |
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--- a/lwasm/lwasm.c Sat Jun 09 16:03:36 2012 -0600 +++ b/lwasm/lwasm.c Sat Jun 09 16:25:19 2012 -0600 @@ -58,6 +58,12 @@ return e; } + if (as -> undefzero) + { + e = lw_expr_build(lw_expr_type_int, 0); + return e; + } + // undefined here is undefied unless output is object if (as -> output_format != OUTPUT_OBJ) goto nomatch; @@ -896,6 +902,14 @@ return NULL; } + /* handle condundefzero */ + if (CURPRAGMA(as -> cl, PRAGMA_CONDUNDEFZERO)) + { + as -> undefzero = 1; + lwasm_reduce_expr(as, e); + as -> undefzero = 0; + } + /* we need to simplify the expression here */ debug_message(as, 250, "Doing interim reductions"); lwasm_interim_reduce(as);