[Bug gas/21125] New: [PowerPC] dcbt and dcbtst instructions not accepted in 3-operand form

[nholcomb at wisc dot edu]

https://sourceware.org/bugzilla/show_bug.cgi?id=21125

            Bug ID: 21125
           Summary: [PowerPC] dcbt and dcbtst instructions not accepted in
                    3-operand form
           Product: binutils
           Version: 2.26
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: gas
          Assignee: unassigned at sourceware dot org
          Reporter: nholcomb at wisc dot edu
  Target Milestone: ---

Both DCBT and DCBTST instructions have three operand forms as follows:

dcbt RA,RB,TH
dcbtst RA,RB,TH

However, assembling "dcbt r9, r2, 10" resulted in the error: "Error:  junk at
end of line: 10"

Note that there is a two operand form described in the manual:
"If the dcbt mnemonic is used with only two oper-
ands, the TH operand is assumed to be 0b00000."

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