https://sourceware.org/bugzilla/show_bug.cgi?id=23002
Bug ID: 23002
Summary: [RISCV] Pseudoinstruction Call is expanded
incorrectly
Product: binutils
Version: 2.29
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gas
Assignee: unassigned at sourceware dot org
Reporter: sourceware at lusiardi dot de
Target Milestone: ---
Hello,
I think I found a small issue with the replacement of the call pseudo
instruction in Version 2.29.1:
As input I used the following snippet:
label:
nop
nop
call label
This should be an endless loop executing the nops again and again. I can
confirm this behaviour with http://www.kvakil.me/venus/.
Now if I feed this code to riscv64-unknown-elf-as and use
riscv64-unknown-elf-objdump on the result I receive
0000000000000000 <l2>:
0: 00000013 nop
4: 00000013 nop
8: 00000097 auipc ra,0x0
c: 000080e7 jalr ra
Where ra is x1 and 'jalr ra' expands to 'jalr ra, ra, 0'. This is also an
endless loop but only loops the call command. This seems to be wrong.
I would be please to help with any further information.
Regards
Joachim Lusiardi
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