http://sourceware.org/bugzilla/show_bug.cgi?id=14129
Bug #: 14129
Summary: andq and orq instructions give 'invalid operand' error
when MSB of 32-bit immediate is set
Product: binutils
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: binutils
AssignedTo: [email protected]
ReportedBy: [email protected]
Classification: Unclassified
The following instruction gives error for x86-64 target:
>>>>
orq $0xFFFFFF00, %rax
<<<<
$as t.s
t.s: Assembler messages:
t.s:1: Error: suffix or operands invalid for `or'
The error appears whenever MSB of 32-bit immediate operand is set.
According to the instruction manuals (AMD 64 Architecture: Programmers Manual
Vol 3), an 'or' instruction can take signed-values.
"OR reg/mem64, imm32" OR the contents of a 64-bit register or memory operand
and sign-extended immediate 32-bit value
Ditto for 'andq' case too.
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