Messages in this thread | | | Date | Sat, 20 Jan 2024 18:21:43 +0000 (UTC) | From | Thorsten Glaser <> | Subject | disassemblers (was Re: [PATCH 1/2] x86: Remove dynamic NOP selection) |
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Dixi quod…
>>Is there some sane tool that just does the sane thing and shows this as > >The only other disassemblers I know don’t know about ELF objects >at all, I’m sorry to say.
I have searched through my bookmarks and found “Agner Fog’s objconv” https://www.agner.org/optimize/#objconv which I had not yet tried as it comes with a .exe but apparently, the included GPL source builds on GNU/Linux (and BSD and MacOSX) as well.
Usage is: ./objconv -fgasm filename.o
This will write filename.asm ⚠ into the same directory as the .o file, surprisingly.
It works for i386 and amd64 but not x32 (aka amd64ilp32) which is mis-disassembled as if it were i386. Sample output fragment:
tsv_header: sub rsp, 8 # 00E3 _ 48: 83. EC, 08 lea rdi, [.LC7+rip] # 00E7 _ 48: 8D. 3D, 00000000(rel) call puts@PLT # 00EE _ E8, 00000000(PLT r) add rsp, 8 # 00F3 _ 48: 83. C4, 08 ret # 00F7 _ C3
Bit irritating is it uses decimal numbers…
sub rsp, 232 # 0102 _ 48: 81. EC, 000000E8
… and the way the input is separated with colon, period and comma, but it’s legible enough.
Credits to Peter Cordes for the discovery.
bye, //mirabilos -- When he found out that the m68k port was in a pretty bad shape, he did not, like many before him, shrug and move on; instead, he took it upon himself to start compiling things, just so he could compile his shell. How's that for dedication. -- Wouter, about my Debian/m68k revival
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