Displaying 2 results from an estimated 2 matches for "epiphanyinstrformat".
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epiphanyinstrformats
2017 Jan 19
3
Got stuck with PC-rel branching
...But when I'm trying to generate obj file, I'm getting zeros instead of
PC-related offset in all branch instructions.
In short, what I'm doing:
- Pattern (br bb:$addr) is selected using EpiphanyInstrInfo.td as
BNONE32(ins jmptarget:$addr), Branch32 class
- Branch32 class is defined in EpiphanyInstrFormats.td with bits<24> addr,
which should go into bits{31-8} of the MC instruction. Those bits remain
zeros after relaxation for some reason.
- jmptarget operand has type OPERAND_PCREL, and uses EncoderMethod
"getJumpTargetOpValue" defined in EpiphanyMCCodeEmitter. If this method
gets M...
2017 Jan 19
2
Got stuck with PC-rel branching
...bj file, I'm getting zeros instead of
> PC-related offset in all branch instructions.
>
> In short, what I'm doing:
>
> - Pattern (br bb:$addr) is selected using EpiphanyInstrInfo.td as
> BNONE32(ins jmptarget:$addr), Branch32 class
>
> - Branch32 class is defined in EpiphanyInstrFormats.td with bits<24> addr,
> which should go into bits{31-8} of the MC instruction. Those bits remain
> zeros after relaxation for some reason.
>
> - jmptarget operand has type OPERAND_PCREL, and uses EncoderMethod
> "getJumpTargetOpValue" defined in EpiphanyMCCodeEmitte...