В Linux есть /proc/[pid]/stat
.
От "man proc"
:
stat Status information about the process. This is used by
ps(1). It is defined in /usr/src/linux/fs/proc/array.c.
...
kstkeip %lu
The current EIP (instruction pointer).
AFAICT, 29-е поле вывода соответствует указателю текущей инструкции процесса. Например:
gdb date
GNU gdb Red Hat Linux (6.0post-0.20040223.20rh)
Copyright 2004 Free Software Foundation, Inc.
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This GDB was configured as "x86_64-redhat-linux-gnu"...(no debugging symbols found)...Using host libthread_db library "/lib64/tls/libthread_db.so.1".
(gdb) set stop-on-solib-events 1
(gdb) run
(no debugging symbols found)...(no debugging symbols found)...(no debugging symbols found)...[Thread debugging using libthread_db enabled]
[New Thread 182896391360 (LWP 27968)]
(no debugging symbols found)...Stopped due to shared library event
(gdb) c
[Switching to Thread 182896391360 (LWP 27968)]
Stopped due to shared library event
(gdb) where
#0 0x00000036b060bb20 in _dl_debug_state_internal () from /lib64/ld-linux-x86-64.so.2
#1 0x00000036b060b51c in _dl_init_internal () from /lib64/ld-linux-x86-64.so.2
#2 0x00000036b0600f72 in _dl_start_user () from /lib64/ld-linux-x86-64.so.2
#3 0x0000000000000001 in ?? ()
#4 0x0000007fbff62728 in ?? ()
#5 0x0000000000000000 in ?? ()
(gdb) shell cat /proc/27968/stat
27968 (date) T 27839 27968 8955 34817 27839 4194304 42 0 330 0 0 0 0 0 18 0 0 0 1881668573 6144000 78 18446744073709551615 4194304 4234416 548680739552 18446744073709551615 234887363360 0 0 0 0 18446744071563322838 0 0 17 0 0 0 0 0 0 0
(gdb) p/a 234887363360 <--- the value of 29th field
$1 = 0x36b060bb20 <_dl_debug_state_internal>