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Diffstat (limited to 'mcon/U/d_end_symbol.U')
| -rw-r--r-- | mcon/U/d_end_symbol.U | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/mcon/U/d_end_symbol.U b/mcon/U/d_end_symbol.U new file mode 100644 index 0000000..b8403ed --- /dev/null +++ b/mcon/U/d_end_symbol.U @@ -0,0 +1,37 @@ +?RCS: $Id: d_end_symbol.U 167 2013-05-08 17:58:00Z rmanfredi $ +?RCS: +?RCS: Copyright (c) 2011, Raphael Manfredi +?RCS: +?RCS: You may redistribute only under the terms of the Artistic License, +?RCS: as specified in the README file that comes with the distribution. +?RCS: You may reuse parts of this distribution only within the terms of +?RCS: that same Artistic License; a copy of which may be found at the root +?RCS: of the source tree for dist 4.0. +?RCS: +?MAKE:d_end_symbol: Trylink cat +?MAKE: -pick add $@ %< +?S:d_end_symbol: +?S: This variable conditionally defines HAS_END_SYMBOL if the +?S: linker-defined symbol "end" is available to compute the end +?S: address of the program's BSS segment. +?S:. +?C:HAS_END_SYMBOL: +?C: This symbol, if defined, indicates that the C program can declare +?C: extern const int end; +?C: and then use &end to know the end of the BSS segment. +?C:. +?H:#$d_end_symbol HAS_END_SYMBOL /**/ +?H:. +?LINT:set d_end_symbol +: see if the end symbol exists +$cat >try.c <<EOC +int main(void) +{ + extern int end; + return (int) &end >> 12; +} +EOC +cyn="whether your linker defines the end symbol" +set d_end_symbol +eval $trylink + |