objdump disassembly with source
When you compile a binary with debug information, objdump can actually print
the source and line numbers interleaved with disassembly:
$ objdump -M intel -d -S -l src/dnsmasq
for (found = NULL, service = daemon->pxe_services; service; service = service->next)
4034c0: 48 8b 05 91 9a 24 00 mov rax,QWORD PTR [rip+0x249a91] # 64cf58 <dnsmasq_daemon>
4034c7: 4c 89 44 24 08 mov QWORD PTR [rsp+0x8],r8
4034cc: 89 7c 24 04 mov DWORD PTR [rsp+0x4],edi
4034d0: 4c 8b a0 58 02 00 00 mov r12,QWORD PTR [rax+0x258]
/vagrant/dnsmasq-2.77/src/rfc2131.c:2044 (discriminator 1)
4034d7: 4d 85 e4 test r12,r12
4034da: 74 3f je 40351b <pxe_uefi_workaround+0x80>
/vagrant/dnsmasq-2.77/src/rfc2131.c:2045
if (pxe_arch == service->CSA && service->basename && match_netid(service->netid, netid, 1))
4034dc: 41 0f b7 04 24 movzx eax,WORD PTR [r12]
4034e1: 39 44 24 04 cmp DWORD PTR [rsp+0x4],eax
4034e5: 75 2d jne 403514 <pxe_uefi_workaround+0x79>
/vagrant/dnsmasq-2.77/src/rfc2131.c:2045 (discriminator 1)
4034e7: 49 83 7c 24 10 00 cmp QWORD PTR [r12+0x10],0x0
4034ed: 74 25 je 403514 <pxe_uefi_workaround+0x79>
/vagrant/dnsmasq-2.77/src/rfc2131.c:2045 (discriminator 2)
4034ef: 49 8b 7c 24 28 mov rdi,QWORD PTR [r12+0x28]
4034f4: ba 01 00 00 00 mov edx,0x1
4034f9: 4c 89 fe mov rsi,r15
4034fc: e8 3f e2 02 00 call 431740 <match_netid>
403501: 85 c0 test eax,eax
403503: 74 0f je 403514 <pxe_uefi_workaround+0x79>
Of course, you probably need to be in your build directory so that objdump
can find the source.
Poorly formatted source and macros are sometimes irritating to read.