For this code:
LOC #8000000000000000
Boot GETA $0,DTrap %set dynamic- and forced-trap handler
the GAS MMIX port complains as follows:
loc-6.s:4: Error: LOC expression stepping backwards is not supported
It'd reasonable to special-case this value (or any value with the low 56 bits
zero) as pointing to a special unnamed segment, and not stepping relative within
the current segment. Compare to special-casing of constants for Data_Segment,
Pool_Segment and Stack_Segment.
It'd also be reasonable to treat absolute LOC arguments as unsigned and only
check for "stepping backwards" when there's previous contents.
--
Summary: gas interprets large LOC constant argument as stepping
backwards
Product: binutils
Version: 2.19 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: gas
AssignedTo: unassigned at sources dot redhat dot com
ReportedBy: hp at sourceware dot org
CC: bug-binutils at gnu dot org
GCC target triplet: mmix-knuth-mmixware
http://sourceware.org/bugzilla/show_bug.cgi?id=6607
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