Hello, I noticed the operands to the relational operators (DW_OP_le, etc.) in dwarf_eval_expr are reversed compared with the DWARF spec.
Attached is a patch to fix the issue. Regards, Chris January VP Engineering Allinea Software Ltd.
diff -r d08a70da6717 -r c440a8363211 src/dwarf/Gexpr.c --- src/dwarf/Gexpr.c Tue Jan 22 15:50:13 2013 +0000 +++ src/dwarf/Gexpr.c Tue Jan 22 16:52:35 2013 +0000 @@ -574,42 +574,42 @@ Debug (15, "OP_le\n"); tmp1 = pop (); tmp2 = pop (); - push (sword (as, tmp1) <= sword (as, tmp2)); + push (sword (as, tmp2) <= sword (as, tmp1)); break; case DW_OP_ge: Debug (15, "OP_ge\n"); tmp1 = pop (); tmp2 = pop (); - push (sword (as, tmp1) >= sword (as, tmp2)); + push (sword (as, tmp2) >= sword (as, tmp1)); break; case DW_OP_eq: Debug (15, "OP_eq\n"); tmp1 = pop (); tmp2 = pop (); - push (sword (as, tmp1) == sword (as, tmp2)); + push (sword (as, tmp2) == sword (as, tmp1)); break; case DW_OP_lt: Debug (15, "OP_lt\n"); tmp1 = pop (); tmp2 = pop (); - push (sword (as, tmp1) < sword (as, tmp2)); + push (sword (as, tmp2) < sword (as, tmp1)); break; case DW_OP_gt: Debug (15, "OP_gt\n"); tmp1 = pop (); tmp2 = pop (); - push (sword (as, tmp1) > sword (as, tmp2)); + push (sword (as, tmp2) > sword (as, tmp1)); break; case DW_OP_ne: Debug (15, "OP_ne\n"); tmp1 = pop (); tmp2 = pop (); - push (sword (as, tmp1) != sword (as, tmp2)); + push (sword (as, tmp2) != sword (as, tmp1)); break; case DW_OP_skip:
_______________________________________________ Libunwind-devel mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/libunwind-devel
