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The instruction attribute table generator fails when run by mawk or original-awk: $ mawk -f arch/x86/tools/gen-insn-attr-x86.awk \ arch/x86/lib/x86-opcode-map.txt > /dev/null Semantic error at 240: Second IMM error $ echo $? 1 Line 240 contains "c8: ENTER Iw,Ib", which indicates that this instruction has two immediate operands, the second of which is one byte. The script loops through the immediate operands using a for loop. Unfortunately, there is no guarantee in awk that a for (variable in array) loop will return the indices in increasing order. Internally, both original-awk and mawk iterate over a hash table for this purpose, and both implementations happen to produce the index 2 before 1. The supposed second immediate operand is more than one byte wide, producing the error. So loop over the indices in increasing order instead. As a side-effect, with mawk this means the silly two-entry hash table never has to be built. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Acked-by Masami Hiramatsu <mhiramat@redhat.com> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20091213220437.GA27718@progeny.tock> Signed-off-by: Ingo Molnar <mingo@elte.hu> |
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| .. | ||
| chkobjdump.awk | ||
| distill.awk | ||
| gen-insn-attr-x86.awk | ||
| Makefile | ||
| test_get_len.c | ||