https://sourceware.org/bugzilla/show_bug.cgi?id=14480
--- Comment #5 from James Patrick Conlon <cptjustice at gmail dot com> ---
Confirming that this bug still exists in as 2.31.51.20180719.
Attached is a slightly modified version of Jordi's dic.s called dic-mod.s. The
output of pdp11-aout-as -a dic-mod.s is:
GAS LISTING /home/cptnapalm/Downloads/dic-mod.s page 1
1 0000 C0151200 start:mov$ind,r0
2 0004 C809 jsr pc,(r0)
3 0006 C809 jsr pc,@(r0)
4 0008 F8090000 jsr pc,@0(r0)
5 000c F8090200 jsr pc,@2(r0)
6 0010 0000 halt
7
8
9 0012 1600 ind:.WORDdest
10 0014 1800 .WORDdest2
11
12 0016 8700 dest:rtspc
13
14 0018 8700 dest2:rtspc
15
16 .END
GAS LISTING /home/cptnapalm/Downloads/dic-mod.s page 2
DEFINED SYMBOLS
/home/cptnapalm/Downloads/dic-mod.s:1 .text:0000000000000000 start
/home/cptnapalm/Downloads/dic-mod.s:9 .text:0000000000000012 ind
/home/cptnapalm/Downloads/dic-mod.s:12 .text:0000000000000016 dest
/home/cptnapalm/Downloads/dic-mod.s:14 .text:0000000000000018 dest2
NO UNDEFINED SYMBOLS
As can be seen, jsr pc,@(r0) assembles the same as jsr pc,(r0), which it
shouldn't do. I created a patch, which is attached, that solves this problem.
As adding a '0' would create a new string and since it already knows that it's
deferred, I just replace the '@' with a '0' before sending it along.
The new output:
GAS LISTING /home/cptnapalm/Downloads/dic-mod.s page 1
1 0000 C0151400 start: mov $ind,r0
2 0004 C809 jsr pc,(r0)
3 0006 F8090000 jsr pc,@(r0)
4 000a F8090000 jsr pc,@0(r0)
5 000e F8090200 jsr pc,@2(r0)
6 0012 0000 halt
7
8
9 0014 1800 ind: .WORD dest
10 0016 1A00 .WORD dest2
11
12 0018 8700 dest: rts pc
13
14 001a 8700 dest2: rts pc
15
16 .END
GAS LISTING /home/cptnapalm/Downloads/dic-mod.s page 2
DEFINED SYMBOLS
/home/cptnapalm/Downloads/dic-mod.s:1 .text:0000000000000000 start
/home/cptnapalm/Downloads/dic-mod.s:9 .text:0000000000000014 ind
/home/cptnapalm/Downloads/dic-mod.s:12 .text:0000000000000018 dest
/home/cptnapalm/Downloads/dic-mod.s:14 .text:000000000000001a dest2
NO UNDEFINED SYMBOLS
It now does the right thing in this case.
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