mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-22 11:17:19 +00:00
377 lines
8.6 KiB
Plaintext
377 lines
8.6 KiB
Plaintext
# $FreeBSD$
|
|
# Assembler-level macros for i386
|
|
# Disassemble the next 10 instructions.
|
|
define xi
|
|
x/10i $eip
|
|
end
|
|
|
|
# Top 12 words on stack
|
|
define xs
|
|
x/12x $esp
|
|
end
|
|
|
|
# Top 12 words from frame pointer
|
|
define xb
|
|
x/12x $ebp
|
|
end
|
|
|
|
# single step through calls and disassemble the next instruction
|
|
define z
|
|
ni
|
|
x/1i $eip
|
|
end
|
|
|
|
# single step over calls and disassemble the next instruction
|
|
define zs
|
|
si
|
|
x/1i $eip
|
|
end
|
|
|
|
# show current stack frame and first 4 parameters
|
|
define xp
|
|
printf " esp: "
|
|
output/x $esp
|
|
echo (
|
|
output (((int)$ebp)-(int)$esp)/4-4
|
|
printf " words on stack)\n ebp: "
|
|
output/x $ebp
|
|
printf "\n eip: "
|
|
x/1i $eip
|
|
printf "Saved ebp: "
|
|
output/x *(int*)$ebp
|
|
printf " (maximum of "
|
|
output ((*(int*)$ebp)-(int)$ebp)/4-4
|
|
printf " parameters possible)\nSaved eip: "
|
|
x/1i *(int*)($ebp+4)
|
|
printf "\nParm 1 at "
|
|
output/x (int) ($ebp+8)
|
|
printf ": "
|
|
output (char*) *(int*)($ebp+8)
|
|
printf "\nParm 2 at "
|
|
output/x (int) ($ebp+12)
|
|
printf ": "
|
|
output (char*) *(int*)($ebp+12)
|
|
printf "\nParm 3 at "
|
|
output/x (int) ($ebp+16)
|
|
printf ": "
|
|
output (char*) *(int*)($ebp+16)
|
|
printf "\nParm 4 at "
|
|
output/x (int) ($ebp+20)
|
|
printf ": "
|
|
output (char*) *(int*)($ebp+20)
|
|
echo \n
|
|
end
|
|
document xp
|
|
Show the register contents and the first four parameter
|
|
words of the current frame.
|
|
end
|
|
|
|
# show current stack frame and first 10 parameters
|
|
define xxp
|
|
printf " esp: "
|
|
output/x $esp
|
|
printf "\n ebp: "
|
|
output/x $ebp
|
|
printf "\n eip: "
|
|
x/1i $eip
|
|
printf "Saved ebp: "
|
|
output/x *(int*)$ebp
|
|
printf " (maximum of "
|
|
output ((*(int*)$ebp)-(int)$ebp)/4-4
|
|
printf " parameters possible)\nSaved eip: "
|
|
x/1i *(int*)($ebp+4)
|
|
printf "\nParm 1 at "
|
|
output/x (int) ($ebp+8)
|
|
printf ": "
|
|
output (char*) *(int*)($ebp+8)
|
|
printf "\nParm 2 at "
|
|
output/x (int) ($ebp+12)
|
|
printf ": "
|
|
output (char*) *(int*)($ebp+12)
|
|
printf "\nParm 3 at "
|
|
output/x (int) ($ebp+16)
|
|
printf ": "
|
|
output (char*) *(int*)($ebp+16)
|
|
printf "\nParm 4 at "
|
|
output/x (int) ($ebp+20)
|
|
printf ": "
|
|
output (char*) *(int*)($ebp+20)
|
|
printf "\nParm 5 at "
|
|
output/x (int) ($ebp+24)
|
|
printf ": "
|
|
output (char*) *(int*)($ebp+24)
|
|
printf "\nParm 6 at "
|
|
output/x (int) ($ebp+28)
|
|
printf ": "
|
|
output (char*) *(int*)($ebp+28)
|
|
printf "\nParm 7 at "
|
|
output/x (int) ($ebp+32)
|
|
printf ": "
|
|
output (char*) *(int*)($ebp+32)
|
|
printf "\nParm 8 at "
|
|
output/x (int) ($ebp+36)
|
|
printf ": "
|
|
output (char*) *(int*)($ebp+36)
|
|
printf "\nParm 9 at "
|
|
output/x (int) ($ebp+40)
|
|
printf ": "
|
|
output (char*) *(int*)($ebp+40)
|
|
printf "\nParm 10 at "
|
|
output/x (int) ($ebp+44)
|
|
printf ": "
|
|
output (char*) *(int*)($ebp+44)
|
|
echo \n
|
|
end
|
|
document xxp
|
|
Show the register contents and the first ten parameter
|
|
words of the current frame.
|
|
end
|
|
|
|
# Show first to fifth parameters of current frame as int, int * and char *.
|
|
define xp0
|
|
x/12x *(int*)$esp
|
|
p *(int*)$esp
|
|
p (char*)*$esp
|
|
end
|
|
define xp1
|
|
x/12x *(int*)($ebp+4)
|
|
p *(int*)($ebp+4)
|
|
p (char**)($ebp+4)
|
|
end
|
|
define xp2
|
|
x/12x *(int*)($ebp+8)
|
|
p *(int*)($ebp+8)
|
|
p *(char**)($ebp+8)
|
|
end
|
|
define xp3
|
|
x/12x *(int*)($ebp+12)
|
|
p *(int*)($ebp+12)
|
|
p (char**)($ebp+12)
|
|
end
|
|
define xp4
|
|
x/12x *(int*)($ebp+16)
|
|
p *(int*)($ebp+16)
|
|
p (char**)($ebp+16)
|
|
end
|
|
document xp0
|
|
Show the first parameter of current stack frame in various formats
|
|
end
|
|
document xp1
|
|
Show the second parameter of current stack frame in various formats
|
|
end
|
|
document xp2
|
|
Show the third parameter of current stack frame in various formats
|
|
end
|
|
document xp3
|
|
Show the fourth parameter of current stack frame in various formats
|
|
end
|
|
document xp4
|
|
Show the fifth parameter of current stack frame in various formats
|
|
end
|
|
|
|
# Select frame 0 to 5 and show stack information.
|
|
define f0
|
|
f 0
|
|
xp
|
|
end
|
|
define f1
|
|
f 1
|
|
xp
|
|
end
|
|
define f2
|
|
f 2
|
|
xp
|
|
end
|
|
define f3
|
|
f 3
|
|
xp
|
|
end
|
|
define f4
|
|
f 4
|
|
xp
|
|
end
|
|
define f5
|
|
f 5
|
|
xp
|
|
end
|
|
document f0
|
|
Select stack frame 0 and show assembler-level details
|
|
end
|
|
document f1
|
|
Select stack frame 1 and show assembler-level details
|
|
end
|
|
document f2
|
|
Select stack frame 2 and show assembler-level details
|
|
end
|
|
document f3
|
|
Select stack frame 3 and show assembler-level details
|
|
end
|
|
document f4
|
|
Select stack frame 4 and show assembler-level details
|
|
end
|
|
document f5
|
|
Select stack frame 5 and show assembler-level details
|
|
end
|
|
document z
|
|
Single step 1 instruction (over calls) and show next instruction.
|
|
end
|
|
document zs
|
|
Single step 1 instruction (through calls) and show next instruction.
|
|
end
|
|
document xi
|
|
List the next 10 instructions from the current IP value
|
|
end
|
|
document xs
|
|
Show the last 12 words on stack in hex
|
|
end
|
|
document xb
|
|
Show 12 words starting at current BP value in hex
|
|
end
|
|
|
|
# pcb <pid>
|
|
# show contents of pcb, currently only i386.
|
|
define pcb
|
|
set $nproc = nprocs
|
|
set $aproc = allproc.lh_first
|
|
set $proc = allproc.lh_first
|
|
while (--$nproc >= 0)
|
|
set $pptr = $proc.p_pptr
|
|
if ($proc->p_pid == $arg0)
|
|
set $pcba = $proc->p_threads.tqh_first->td_pcb
|
|
printf "ip: %08x sp: %08x bp: %08x bx: %08x\n", $pcba->pcb_eip, $pcba->pcb_esp, $pcba->pcb_ebp, $pcba->pcb_ebx
|
|
x/1i $pcba->pcb_eip
|
|
set $nproc = 0
|
|
end
|
|
set $aproc = $proc.p_list.le_next
|
|
if ($aproc == 0 && $nproc > 0)
|
|
set $aproc = zombproc
|
|
end
|
|
set $proc = $aproc
|
|
end
|
|
end
|
|
document pcb
|
|
Show some pcb contents of process whose pid is specified.
|
|
end
|
|
|
|
# btr <frame>
|
|
# primitive backtrace. frame is a memory address.
|
|
define btr
|
|
set $frame = $arg0
|
|
set $fno = 0
|
|
while (*(int *) $frame > 0xc0000000)
|
|
set $myebp = *(int *) $frame
|
|
set $myeip = *(int *) ($frame + 4)
|
|
printf " frame %d at %p: ebp %8x, eip ", $fno, $frame, $myebp
|
|
x/1i $myeip
|
|
set $frame = $myebp
|
|
set $fno = $fno + 1
|
|
end
|
|
end
|
|
document btr
|
|
Show a backtrace from the ebp address specified. This can be used to get a backtrace from any stack resident in memory. It's the user's responsiblity to ensure that the address is meaningful.
|
|
end
|
|
|
|
# btp <pid>
|
|
# backtrace for process <pid>. Uses btr (machine dependent) to perform the backtrace.
|
|
# may produce nonsense.
|
|
define btp
|
|
set $nproc = nprocs
|
|
set $aproc = allproc.lh_first
|
|
set $proc = allproc.lh_first
|
|
while (--$nproc >= 0)
|
|
if ($proc->p_pid == $arg0)
|
|
btr $proc->p_threads.tqh_first->td_pcb->pcb_ebp
|
|
set $nproc = 0
|
|
else
|
|
set $aproc = $proc.p_list.le_next
|
|
if ($aproc == 0 && $nproc > 0)
|
|
set $aproc = zombproc
|
|
end
|
|
set $proc = $aproc
|
|
end
|
|
end
|
|
end
|
|
document btp
|
|
Show a backtrace for the process whose pid is specified as a parameter.
|
|
end
|
|
|
|
# Do backtraces for all processes in the system.
|
|
# Uses btr (machine dependent) to perform the backtrace.
|
|
define btpa
|
|
set $nproc = nprocs
|
|
set $aproc = allproc.lh_first
|
|
set $proc = allproc.lh_first
|
|
printf " pid proc uid ppid pgrp flag stat comm wchan\n"
|
|
while (--$nproc >= 0)
|
|
set $pptr = $proc.p_pptr
|
|
if ($pptr == 0)
|
|
set $pptr = $proc
|
|
end
|
|
if ($proc.p_stat)
|
|
printf "%5d %08x %4d %5d %5d %06x %d %-10s ", \
|
|
$proc.p_pid, $aproc, \
|
|
$proc.p_cred->p_ruid, $pptr->p_pid, \
|
|
$proc.p_pgrp->pg_id, $proc.p_flag, $proc.p_stat, \
|
|
&$proc.p_comm[0]
|
|
if ($proc.p_wchan)
|
|
if ($proc.p_wmesg)
|
|
printf "%s ", $proc.p_wmesg
|
|
end
|
|
printf "%x", $proc.p_wchan
|
|
end
|
|
printf "\n"
|
|
if ($proc->p_flag & 4)
|
|
btr $proc->p_threads.tqh_first->td_pcb->pcb_ebp
|
|
else
|
|
echo (not loaded)\n
|
|
end
|
|
end
|
|
set $aproc = $proc.p_list.le_next
|
|
if ($aproc == 0 && $nproc > 0)
|
|
set $aproc = zombproc
|
|
end
|
|
set $proc = $aproc
|
|
end
|
|
end
|
|
document btpa
|
|
Show backtraces for all processes in the system.
|
|
end
|
|
|
|
# Show backtrace for process selected with "defproc"
|
|
define btpp
|
|
btr $myvectorproc->p_threads.tqh_first->td_pcb->pcb_ebp
|
|
end
|
|
document btpp
|
|
Show a backtrace for the process previously selected with 'defproc'.
|
|
end
|
|
|
|
# Specific stack fram of process selected with "defproc".
|
|
define fr
|
|
set $fno = 0
|
|
set $searching = 1
|
|
set $frame = $myvectorproc->p_threads.tqh_first->td_pcb->pcb_ebp
|
|
while (($searching == 1) && (*(int *) $frame > 0xc0000000))
|
|
set $myebp = *(int *) $frame
|
|
set $myeip = *(int *) ($frame + 4)
|
|
if ($fno == $arg0)
|
|
printf " frame %d at %p: ebp %8x, eip ", $fno, $frame, $myebp
|
|
x/1i $myeip
|
|
printf "Called from %8x, stack frame at %8x\n", *(int *) ($myebp+4), *(int *) $myebp
|
|
printf "last 20 local variables:\n"
|
|
x/20x ($myebp-80)
|
|
printf "call parameters:\n"
|
|
x/8x ($myebp+8)
|
|
set $searching = 0
|
|
else
|
|
set $frame = $myebp
|
|
set $fno = $fno + 1
|
|
end
|
|
end
|
|
if ($searching == 1)
|
|
echo frame not found\n
|
|
end
|
|
end
|
|
document fr
|
|
Show the frame of the stack of the process previously selected with 'defproc'.
|
|
end
|