Hi,
I'd like to do instruction traces with library+function name included.
From what I understand *in_asm* only shows instructions when they are
being JIT:ed.
If I call a function twice I only see the instructions once so it makes
sense.
As a workaround, I tried to do a plugin. I looked at the examples in
contrib/plugins and it seems to work nicely. I see all instructions in
userspace:
0000004000802100 48 89 e7 movq %rsp, %rdi
0000004000802103 e8 08 0e 00 00 callq 0x4000802f10
0000004000802f10 f3 0f 1e fa endbr64
0000004000802f14 55 pushq %rbp
0000004000802f15 48 89 e5 movq %rsp, %rbp
0000004000802f18 41 57 pushq %r15
However, for it to be super useful, I'd also like to see what library or
source file each instruction lives, and what function we're in.
Example output from perf + intel_pt
a.out 602812 [006] 206712.277263361: 7f8d50217084 brk+0x4
(/usr/lib/x86_64-linux-gnu/ld-2.31.so) mov $0xc, %eax
a.out 602812 [006] 206712.277263361: 7f8d50217089 brk+0x9
(/usr/lib/x86_64-linux-gnu/ld-2.31.so) syscall
a.out 602812 [006] 206712.277264027: 7f8d5021708b brk+0xb
(/usr/lib/x86_64-linux-gnu/ld-2.31.so) cmp $0xfffffffffffff000, %rax
a.out 602812 [006] 206712.277264027: 7f8d50217091 brk+0x11
(/usr/lib/x86_64-linux-gnu/ld-2.31.so) jnbe 0x7f8d502170a8
a.out 602812 [006] 206712.277264027: 7f8d50217093 brk+0x13
(/usr/lib/x86_64-linux-gnu/ld-2.31.so) movq %rax, 0x1106e(%rip)
Is this doable? Do you have any advice on where to start?
I tried to get the "symbol" in the plugin, but I only get null values.
Kind regards,
Marcus
