https://sourceware.org/bugzilla/show_bug.cgi?id=17037
Bug ID: 17037
Summary: gdb doesn't recognize s390 instruction CIT
Product: binutils
Version: 2.23
Status: NEW
Severity: normal
Priority: P2
Component: gas
Assignee: unassigned at sourceware dot org
Reporter: code.kchoi at gmail dot com
on zLinux, s390 instruction CIT is assembled into [.long 0xEC'R'0 'IIII'
'M'027] where R is target reg [0-F], I is immediate [0-2^4), and M is mask.
However, layout asm mode parses this instruction as 4 byte long when it is 6
byte. All subsequent instructions are therefore parsed incorrectly.
example
0x400656 .long 0xEC100000
0x40065a sth %r7,2418(%r2,%r11) //bogus, should parse from 0x40065c
(gdb) p/x *0x40065a
$1 = 0x4072b972 //0x4072 is from .long
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