Add macros for kernel debugging. These have been around for a

while, and they will need some more tuning before they're really
useful, but at the moment they're better than nothing.

Indirectly reminded by: dwhite

4 files changed, 1104 insertions, 0 deletions

diff --git a/tools/debugscripts/dot.gdbinit b/tools/debugscripts/dot.gdbinit
new file mode 100644
index 0000000..c150d64
--- /dev/null
+++ b/tools/debugscripts/dot.gdbinit
@@ -0,0 +1,44 @@
+# $FreeBSD$
+# .gdbinit file for remote serial debugging.
+# see gdbinit(9) for further details.
+#
+# The following lines (down to "end" comment) may need to be changed
+file kernel.debug
+set output-radix 16
+set height 70
+set width 120
+
+# Connect to remote target
+define tr
+set remotebaud 9600
+# Remote debugging port
+target remote /dev/cuaa0
+end
+
+# Get symbols from klds.  This is a little fiddly, but very fast.
+define getsyms
+kldstat
+echo Select the list above with the mouse, paste into the screen\n
+echo and then press ^D.  Yes, this is annoying.\n
+# This should be the path of the real modules directory.
+shell asf modules/src/FreeBSD/5-CURRENT-ZAPHOD/src/sys/modules 
+source .asf
+end
+
+# End of things you're likely to need to change.
+
+set remotetimeout 1
+set complaints 1
+set print pretty
+dir ../../..
+document tr
+Attach to a remote kernel via serial port
+end
+
+source gdbinit.kernel
+source gdbinit.vinum
+
+# Attach to the remote kernel
+tr
+# And get the symbols from klds
+getsyms
diff --git a/tools/debugscripts/gdbinit.i386 b/tools/debugscripts/gdbinit.i386
new file mode 100644
index 0000000..26b569e
--- /dev/null
+++ b/tools/debugscripts/gdbinit.i386
@@ -0,0 +1,386 @@
+# $FreeBSD$
+# 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
+y
+    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
+y
+    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 $proc = allproc.lh_first
+    printf "  pid    proc    addr   uid  ppid  pgrp   flag stat comm         wchan\n"
+    while (--$nproc >= 0)
+        set $pptr = $proc.p_pptr
+        if ($pptr == 0)
+           set $pptr = $proc
+        end
+        if ($proc.p_stat)
+            printf "%5d %08x %08x %4d %5d %5d  %06x %d  %-10s   ", \
+                   $proc.p_pid, $aproc, \
+                   $proc.p_uarea, $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 = $aproc
+    end
+end
+document btpa
+Show backtraces for all processes in the system.
+end
+
+# Show backtrace for process selected with "defproc"
+define btpp
+  if ($myvectorproc->p_flag & 4)
+    btr $myvectorproc->p_threads.tqh_first->td_pcb->pcb_ebp
+  else
+    echo (not loaded)\n
+  end
+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 $searching = 1
+if ($myvectorproc->p_flag & 4)
+  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
+else
+  printf "process %d is not loaded in memory\n", $myvectorproc->p_pid
+end
+end
+document fr
+Show the frame of the stack of the process previously selected with 'defproc'.
+end
diff --git a/tools/debugscripts/gdbinit.kernel b/tools/debugscripts/gdbinit.kernel
new file mode 100644
index 0000000..f0db297
--- /dev/null
+++ b/tools/debugscripts/gdbinit.kernel
@@ -0,0 +1,340 @@
+# $FreeBSD$
+# General kernel macros
+
+# Print the command name of the current process
+define pname
+p (char *)curproc->p_comm
+end 
+document pname
+Print the command name of the current process
+end
+
+# Show contents of bp supplied as first parameter:
+#
+# (gdb) bpp bp
+define bpp
+set $bp = (struct buf *) $arg0
+    if $bp->b_io.bio_dev
+      printf "  Buffer at 0x%x: dev 0x%x  data 0x%x  bcount 0x%x  blkno 0x%x resid 0x%x\n", \
+        $bp, \
+        $bp->b_io.bio_dev->si_udev, \
+        $bp->b_io.bio_data, \
+        $bp->b_io.bio_bcount, \
+        $bp->b_io.bio_blkno, \
+        $bp->b_io.bio_resid
+    else
+      printf "  Buffer at 0x%x: dev (none) data 0x%x  bcount 0x%x  blkno 0x%x resid 0x%x\n", \
+        $bp, \
+        $bp->b_io.bio_data, \
+        $bp->b_io.bio_bcount, \
+        $bp->b_io.bio_blkno, \
+        $bp->b_io.bio_resid
+    end
+    printf "   flags 0x%x: ", $bp->b_flags
+      if $bp->b_flags & 0x10
+        printf "busy "
+      end
+      if $bp->b_flags & 0x40
+        printf "call "
+      end
+      if $bp->b_flags & 0x200
+        printf "done "
+      end
+      if $bp->b_flags & 0x800
+        printf "error "
+      end
+      if $bp->b_flags & 0x40000
+        printf "phys "
+      end
+      if $bp->b_flags & 0x100000
+        printf "read "
+      end
+    printf "\n"
+end
+document bpp
+Show summary information about the buffer header (struct bp) pointed
+at by the parameter.
+end
+
+# Show more detailed contents of bp supplied as first parameter:
+#
+# (gdb) bpl bp
+define bpl
+set $bp = (struct buf *) $arg0
+printf "b_proc: "
+output $bp->b_proc
+printf "\nb_flags:      "
+output $bp->b_flags
+printf "\nb_qindex:     "
+output $bp->b_qindex
+printf "\nb_usecount:   "
+output $bp->b_usecount
+printf "\nb_error:      "
+output $bp->b_error
+printf "\nb_bufsize:    "
+output $bp->b_bufsize
+printf "\nb_io.bio_bcount:     "
+output $bp->b_io.bio_bcount
+printf "\nb_io.bio_resid:      "
+output $bp->b_io.bio_resid
+printf "\nb_io.bio_dev:        "
+output $bp->b_io.bio_dev
+printf "\nb_io.bio_data:       "
+output $bp->b_io.bio_data
+printf "\nb_kvasize:    "
+output $bp->b_kvasize
+printf "\nb_lblkno:     "
+output $bp->b_lblkno
+printf "\nb_io.bio_blkno:      "
+output $bp->b_io.bio_blkno
+printf "\nb_iodone:     "
+output $bp->b_iodone
+printf "\nb_vp: "
+output $bp->b_vp
+printf "\nb_dirtyoff:   "
+output $bp->b_dirtyoff
+printf "\nb_dirtyend:   "
+output $bp->b_dirtyend
+printf "\nb_generation: "
+output $bp->b_generation
+printf "\nb_rcred:      "
+output $bp->b_rcred
+printf "\nb_wcred:      "
+output $bp->b_wcred
+printf "\nb_validoff:   "
+output $bp->b_validoff
+printf "\nb_validend:   "
+output $bp->b_validend
+printf "\nb_pblkno:     "
+output $bp->b_pblkno
+printf "\nb_saveaddr:   "
+output $bp->b_saveaddr
+printf "\nb_savekva:    "
+output $bp->b_savekva
+printf "\nb_driver1:    "
+output $bp->b_driver1
+printf "\nb_driver2:    "
+output $bp->b_driver2
+printf "\nb_spc:        "
+output $bp->b_spc
+printf "\nb_npages:     "
+output $bp->b_npages
+printf "\n"
+end
+document bpl
+Show detailed information about the buffer header (struct bp) pointed
+at by the parameter.
+end
+
+# Show contents of buffer header in local variable bp. 
+define bp
+bpp bp
+end
+document bp
+Show information about the buffer header pointed to by the
+variable bp in the current frame.
+end
+
+# Show data of buffer header in local variable bp as string.
+define bpd
+    printf "Buffer data:\n%s", (char *) bp->b_io.bio_data
+end
+document bpd
+Show the contents (char*) of bp->data in the current frame.
+end
+document bpl
+Show detailled information about the buffer header (struct bp) pointed
+at by the local variable bp.
+end
+define bx
+printf "\n b_vnbufs " 
+output/x bp->b_vnbufs
+printf "\n b_freelist " 
+output/x bp->b_freelist
+printf "\n b_act " 
+output/x bp->b_act
+printf "\n b_flags " 
+output/x bp->b_flags
+printf "\n b_qindex " 
+output/x bp->b_qindex
+printf "\n b_usecount " 
+output/x bp->b_usecount
+printf "\n b_error " 
+output/x bp->b_error
+printf "\n b_bufsize " 
+output/x bp->b_bufsize
+printf "\n b_io.bio_bcount " 
+output/x bp->b_io.bio_bcount
+printf "\n b_io.bio_resid " 
+output/x bp->b_io.bio_resid
+printf "\n b_io.bio_dev " 
+output/x bp->b_io.bio_dev
+printf "\n b_io.bio_data " 
+output/x bp->b_io.bio_data
+printf "\n b_kvasize " 
+output/x bp->b_kvasize
+printf "\n b_io.bio_blkno " 
+output/x bp->b_io.bio_blkno
+printf "\n b_iodone_chain " 
+output/x bp->b_iodone_chain
+printf "\n b_vp " 
+output/x bp->b_vp
+printf "\n b_dirtyoff " 
+output/x bp->b_dirtyoff
+printf "\n b_validoff " 
+output/x bp->b_validoff
+echo \n
+end
+
+# Switch back to ddb
+define ddb
+set boothowto=0x80000000
+s
+end
+document ddb
+Switch back to ddb.
+end
+
+# ps: equivalent of the userland command
+define ps
+    set $nproc = nprocs
+    set $aproc = allproc.lh_first
+    set $proc = allproc.lh_first
+    printf "  pid    proc    addr   uid  ppid  pgrp   flag stat comm         wchan\n"
+    while (--$nproc >= 0)
+        set $pptr = $proc.p_pptr
+        if ($pptr == 0)
+           set $pptr = $proc
+        end
+        if ($proc.p_state)
+            set $thread = $proc->p_threads.tqh_first
+            while ($thread)
+                printf "%5d %08x %08x %4d %5d %5d  %06x  %d  %-10s   ", \
+                       $proc.p_pid, $aproc, \
+                       $proc.p_uarea, $proc.p_ucred->cr_ruid, $pptr->p_pid, \
+                       $proc.p_pgrp->pg_id, $proc.p_flag, $proc.p_state, \
+                       &$proc.p_comm[0]
+                if ($thread.td_wchan)
+                    if ($thread.td_wmesg)
+                        printf "%s ", $thread.td_wmesg
+                    end
+                    printf "%x", $thread.td_wchan
+                end
+                printf "\n"     
+                set $thread = $thread->td_plist.tqe_next
+            end
+        end
+        set $aproc = $proc.p_list.le_next
+        if ($aproc == 0 && $nproc > 0)
+            set $aproc = zombproc
+        end
+        set $proc = $aproc
+    end
+end
+document ps
+Show process status.  No options. 
+end
+
+# Specify a process for other commands to refer to.
+# Most are machine-dependent.
+define defproc
+    set $nproc = nprocs
+    set $aproc = allproc.lh_first
+    set $proc = allproc.lh_first
+    while (--$nproc >= 0)
+        if ($proc->p_pid == $arg0)
+	   set $pptr = $proc.p_pptr
+           if ($pptr == 0)
+              set $pptr = $proc
+           end
+	   set $myvectorproc = $proc
+           if ($proc.p_stat)
+               printf "%5d %08x %08x %4d %5d %5d  %06x %d  %-10s   ", \
+                      $proc.p_pid, $aproc, \
+                      $proc.p_uarea, $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"
+	      end
+	   btpp
+	   set $nproc = 0
+	else
+           set $proc = $proc.p_list.le_next
+        end
+   end
+end
+document defproc
+Specify a process for btpp and fr commands.
+end
+
+define vdev
+if (vp->v_type == VBLK)
+  p *vp->v_un.vu_spec.vu_specinfo
+  printf "numoutput: %d\n", vp->v_numoutput
+else
+  echo "Not a block device"
+end
+end
+document vdev
+Show some information of the vnode pointed to by the local variable vp.
+end
+
+# Kludge.  When changing macros, it's convenient to copy and paste
+# definitions from the editor into the debugger window.
+# Unfortunately, gdb insists on asking for confirmation after the
+# "define" line.  y enables you to insert the confirmation in the
+# definition without affecting the way the macro runs (much).
+define y
+echo Check your .gdbinit, it contains a y command\n
+end
+
+# kldstat(1) lookalike
+define kldstat
+   set $file = linker_files.tqh_first
+   printf "Id Refs Address    Size     Name\n"
+   while ($file != 0)
+     printf "%2d %4d 0x%8x %8x %s\n",   \
+	$file->id, 			\
+	$file->refs,			\
+	$file->address,			\
+	$file->size,			\
+	$file->filename
+     set $file = $file->link.tqe_next
+   end
+end
+document kldstat
+Equivalent of the kldstat(9) command, without options.
+end
+
+# msgbuf: print msgbuf.  Can take forever.
+define msgbuf
+printf "%s", msgbufp->msg_ptr
+end
+document msgbuf
+Print the system message buffer (dmesg).  This can take a long time due to the time it takes to transmit the data across a serial line.
+end
+
+# checkmem: check unallocated memory for modifications
+# this assumes that DIAGNOSTIC is set, which causes
+# free memory to be set to 0xdeadc0de
+#
+# Use: checkmem offset length
+define checkmem
+set $offset = $arg0
+# XXX sizeof int.   Needs changing for 64 bit machines.
+# subtract 1 because the last word is always different.
+set $length = $arg1 / 4 - 1
+set $word = 0
+while ($word < $length)
+   if ((int *) $offset) [$word] != 0xdeadc0de
+      printf "invalid word 0x%x at 0x%x\n", ((int *) $offset) [$word], &((int *) $offset) [$word]
+   end
+   set $word = $word + 1
+end
+end
diff --git a/tools/debugscripts/gdbinit.vinum b/tools/debugscripts/gdbinit.vinum
new file mode 100644
index 0000000..7ddfb5e
--- /dev/null
+++ b/tools/debugscripts/gdbinit.vinum
@@ -0,0 +1,334 @@
+# $FreeBSD$
+# gdb macros for debugging Vinum.
+# This file gets included from the .gdbinit files in 
+# the kernel build directory and /var/crash.
+# Normally you won't need to include it directly.
+# see gdbinit(9) for further details.
+
+# Show information about the request pointed to by the variable rq in the current frame.
+define rq
+rqq rq
+end
+document rq
+Show information about the request pointed to by the variable rq in the current frame.
+end
+
+# Show information about the request (struct rq) pointed at by the parameter
+define rqq
+set $rq = (struct request *) $arg0
+printf "Request: \n" 
+output/x *$rq
+printf "\n"
+bpp $rq->bp
+set $rqg = $rq->rqg
+while ($rqg != 0)
+  printf "\nRequest group at %x:\n", $rqg
+  output/x *$rqg
+  printf "\n"
+  set $rqno = 0
+  while ($rqno < $rqg->count)
+    printf "rqg->rqe [%d]: ", $rqno
+    rrqe &$rqg->rqe[$rqno]
+    set $rqno = $rqno + 1
+    end
+  set $rqg = $rqg->next
+  end
+end
+document rqq
+Show information about the request (struct rq) pointed at by the parameter
+end
+
+# Show information about the request element pointed to by the variable rqe in the current frame.
+define rqe
+rrqe rqe
+end
+document rqe
+Show information about the request element pointed to by the variable rqe in the current frame.
+end
+
+# Show information about the request element (struct rqe) pointed at by the parameter.
+define rrqe
+set $rqe = (struct rqelement *) $arg0
+    printf "sdoffset 0x%x, useroffset 0x%x, dataoffset 0x%x, datalen 0x%x, groupoffset 0x%x, grouplen 0x%x, buflen 0x%x\n", \
+      $rqe->sdoffset, \
+      $rqe->useroffset, \
+      $rqe->dataoffset, \
+      $rqe->datalen, \
+      $rqe->groupoffset, \
+      $rqe->grouplen, \
+      $rqe->buflen
+    printf "  Flags 0x%x,  Subdisk %d  Drive %d\n", \
+      $rqe->flags, \
+      $rqe->sdno, \
+      $rqe->driveno
+    bpp &$rqe->b
+end
+document rrqe
+Show information about the request element (struct rqe) pointed at by the parameter.
+end
+
+define rqq0
+printf "rq->prq [0].rqe[0].sdno: " 
+output/x rq->prq[0].rqe[0].sdno
+printf "\nBuffer: device: " 
+output/x rq->prq[0].rqe[0].b.b_dev
+printf " data: " 
+output/x rq->prq[0].rqe[0].b.b_data
+printf " length: " 
+output/x rq->prq[0].rqe[0].b.b_bcount
+printf " drive offset: " 
+output/x rq->prq[0].rqe[0].b.b_blkno
+printf " subdisk offset: " 
+output/x rq->prq[0].rqe[0].sdoffset
+printf "\nFlags: " 
+if (rq->prq[0].rqe[0].b.b_flags & 0x10)
+printf "busy "
+end
+if (rq->prq[0].rqe[0].b.b_flags & 0x200)
+printf "done "
+end
+if (rq->prq[0].rqe[0].b.b_flags & 0x800)
+printf "error "
+end
+if (rq->prq[0].rqe[0].b.b_flags & 0x100000)
+printf "read "
+end
+output/x rq->prq[0].rqe[0].b.b_flags
+printf "\nrq->prq [0].rqe[1].sdno: " 
+output/x rq->prq[0].rqe[1].sdno
+printf "\nBuffer: device: " 
+output/x rq->prq[0].rqe[1].b.b_dev
+printf " data: " 
+output/x rq->prq[0].rqe[1].b.b_data
+printf " length: " 
+output/x rq->prq[0].rqe[1].b.b_bcount
+printf " drive offset: " 
+output/x rq->prq[0].rqe[1].b.b_blkno
+printf " subdisk offset: " 
+output/x rq->prq[0].rqe[1].sdoffset
+printf "\nFlags: " 
+output/x rq->prq[0].rqe[1].b.b_flags
+echo \n
+end
+define rqq1
+printf "\nrq->prq [1].rqe[0].sdno: " 
+output/x rq->prq[1].rqe[0].sdno
+printf "\nBuffer: device: " 
+output/x rq->prq[1].rqe[0].b.b_dev
+printf " data: " 
+output/x rq->prq[1].rqe[0].b.b_data
+printf " length: " 
+output/x rq->prq[1].rqe[0].b.b_bcount
+printf " drive offset: " 
+output/x rq->prq[1].rqe[0].b.b_blkno
+printf " subdisk offset: " 
+output/x rq->prq[1].rqe[0].sdoffset
+printf "\nFlags: " 
+output/x rq->prq[1].rqe[0].b.b_flags
+printf "\nrq->prq [1].rqe[1].sdno: " 
+output/x rq->prq[1].rqe[1].sdno
+printf "\nBuffer: device: " 
+output/x rq->prq[1].rqe[1].b.b_dev
+printf " data: 0x%x  length 0x%x  drive offset 0x%x  sd offset 0x%x\n" rq->prq[1].rqe[1].b.b_data,
+ rq->prq[1].rqe[1].b.b_bcount,
+ rq->prq[1].rqe[1].b.b_blkno,
+ rq->prq[1].rqe[1].sdoffset
+printf "\nFlags: " 
+output/x rq->prq[1].rqe[1].b.b_flags
+echo \n
+end
+define xy
+bpp
+echo stripeoffset
+p stripeoffset
+echo stripebase
+p stripebase
+echo sdno
+p sdno
+echo sdoffset
+p sdoffset
+echo rqe->sectors
+p rqe->sectors
+echo rqe->sdoffset
+p rqe->sdoffset
+end
+# kernel equivalent of 'info -V'
+define rqi
+   set $rqipe = rqip
+   set $rqip = $rqipe + 1
+   set $rqend  = rqinfo + 128
+   if ($rqip == $rqend)
+      set $rqip = rqinfo
+   end
+   set $done = 0
+   while ($done == 0)
+     if ($rqip->bp != 0)
+        printf "%X:\t%d.%06d\tUBP: %x\t", $rqip, $rqip->timestamp.tv_sec, $rqip->timestamp.tv_usec, $rqip->bp
+        p $rqip->type
+	printf " user  "
+        bpp $rqip->bp
+        if ($rqip->type < loginfo_rqe)
+	   printf " copied"
+           bpp &$rqip->info
+        else 
+           rrqe &$rqip->info
+        end
+      end
+      set $rqip = $rqip + 1
+      if ($rqip == $rqipe)
+         set $done = 1
+      end
+      if ($rqip == $rqend)
+         set $rqip = rqinfo
+      end
+   end
+end
+define rqinfo
+   set $rqipe = rqip
+   set $rqip = $rqipe + 1
+   set $rqend  = rqinfo + 128
+   if ($rqip == $rqend)
+      set $rqip = rqinfo
+   end
+   set $done = 0
+   printf "\nTime\t\t\t Event\t\t     Buf\tDev\t  Offset\tBytes\tSD\tSDoff\tDoffset\tGoffset\n\n"
+   while ($done == 0)
+     if ($rqip->bp != 0)
+        printf "%d.%06d\t", $rqip->timestamp.tv_sec, $rqip->timestamp.tv_usec
+	if ($rqip->type ==  loginfo_user_bp)
+	  if ($rqip->info.b.b_flags & 0x00100000)
+	    printf "1VS Read"
+	  else
+	    printf "1VS Write"
+	  end
+	printf "\t%p\t%d.%d\t0x%-9x\t%ld\n", $rqip->bp, $rqip->devmajor, $rqip->devminor & 0xff, $rqip->info.b.b_blkno, $rqip->info.b.b_bcount
+	end
+	
+      if ($rqip->type == loginfo_user_bpl)
+	  if ($rqip->info.b.b_flags & 0x00100000)
+	    printf "2LR Read"
+	  else
+	    printf "2LR Write"
+	  end
+	printf "\t%p\t%d.%d\t0x%-9x\t%ld\n", $rqip->bp, $rqip->devmajor, $rqip->devminor & 0xff, $rqip->info.b.b_blkno, $rqip->info.b.b_bcount
+	end
+	 
+      if ($rqip->type == loginfo_rqe)
+	  if ($rqip->info.b.b_flags & 0x00100000)
+	    printf "3RQ Read"
+	  else
+	    printf "3RQ Write"
+	  end
+	printf "\t%p\t%d.%d\t0x%-9x\t%ld\t%d\t%x\t%x\t%x\n", $rqip->bp, $rqip->devmajor, $rqip->devminor & 0xff, $rqip->info.rqe.b.b_blkno, $rqip->info.rqe.b.b_bcount, $rqip->info.rqe.sdno, $rqip->info.rqe.sdoffset, $rqip->info.rqe.dataoffset, $rqip->info.rqe.groupoffset
+	end
+	
+      if ($rqip->type == loginfo_iodone)
+	  if ($rqip->info.b.b_flags & 0x00100000)
+	    printf "4DN Read"
+	  else
+	    printf "4DN Write"
+	  end
+	printf "\t%p\t%d.%d\t0x%-9x\t%ld\t%d\t%x\t%x\t%x\n", $rqip->bp, $rqip->devmajor, $rqip->devminor & 0xff, $rqip->info.rqe.b.b_blkno, $rqip->info.rqe.b.b_bcount, $rqip->info.rqe.sdno, $rqip->info.rqe.sdoffset, $rqip->info.rqe.dataoffset, $rqip->info.rqe.groupoffset
+	end
+	
+      if ($rqip->type == loginfo_raid5_data)
+	  if ($rqip->info.b.b_flags & 0x00100000)
+	    printf "5RD Read"
+	  else
+	    printf "5RD Write"
+	  end
+	printf "\t%p\t%d.%d\t0x%-9x\t%ld\t%d\t%x\t%x\t%x\n", $rqip->bp, $rqip->devmajor, $rqip->devminor & 0xff, $rqip->info.rqe.b.b_blkno, $rqip->info.rqe.b.b_bcount, $rqip->info.rqe.sdno, $rqip->info.rqe.sdoffset, $rqip->info.rqe.dataoffset, $rqip->info.rqe.groupoffset
+	end
+	
+      if ($rqip->type == loginfo_raid5_parity)
+	  if ($rqip->info.b.b_flags & 0x00100000)
+	    printf "6RP Read"
+	  else
+	    printf "6RP Write"
+	  end
+	printf "\t%p\t%d.%d\t0x%-9x\t%ld\t%d\t%x\t%x\t%x\n", $rqip->bp, $rqip->devmajor, $rqip->devminor & 0xff, $rqip->info.rqe.b.b_blkno, $rqip->info.rqe.b.b_bcount, $rqip->info.rqe.sdno, $rqip->info.rqe.sdoffset, $rqip->info.rqe.dataoffset, $rqip->info.rqe.groupoffset
+	end
+
+      if ($rqip->type == loginfo_sdio)
+	  if ($rqip->info.b.b_flags & 0x00100000)
+	    printf "7VS Read"
+	  else
+	    printf "7VS Write"
+	  end
+	printf "\t%p\t\t  0x%-9x\t%ld\t%d\n", $rqip->bp, $rqip->info.b.b_blkno, $rqip->info.b.b_bcount, $rqip->devminor & 0xff
+	end
+
+      if ($rqip->type == loginfo_sdiol)
+	  if ($rqip->info.b.b_flags & 0x00100000)
+	    printf "8LR Read"
+	  else
+	    printf "8LR Write"
+	  end
+	printf "\t%p\t%d.%d\t0x%-9x\t%ld\n", $rqip->bp, $rqip->devmajor, $rqip->devminor & 0xff, $rqip->info.b.b_blkno, $rqip->info.b.b_bcount
+	end
+	 
+      if ($rqip->type == loginfo_lockwait)
+	printf "Lockwait  %p\t%d\t  0x%x\n", $rqip->bp, $rqip->info.lockinfo.plexno, $rqip->info.lockinfo.stripe
+	end
+
+      if ($rqip->type == loginfo_lock)
+	printf "Lock      \t%p\t%d\t  0x%x\n", $rqip->bp, $rqip->info.lockinfo.plexno, $rqip->info.lockinfo.stripe
+	end
+
+      if ($rqip->type == loginfo_unlock)
+	printf "Unlock    \t%p\t%d\t  0x%x\n", $rqip->bp, $rqip->info.lockinfo.plexno, $rqip->info.lockinfo.stripe
+	end
+
+	if ($rqip->type == loginfo_sdiodone)
+	  if ($rqip->info.b.b_flags & 0x00100000)
+	    printf "9DN Read"
+	  else
+	    printf "9DN Write"
+	  end
+	printf "\t%p\t\t  0x%-9x\t%ld\t%d\n", $rqip->bp, $rqip->info.b.b_blkno, $rqip->info.b.b_bcount, $rqip->devminor
+	end
+
+	end
+      set $rqip = $rqip + 1
+      if ($rqip == $rqipe)
+         set $done = 1
+      end
+      if ($rqip == $rqend)
+         set $rqip = rqinfo
+      end
+   end
+end 
+document rqinfo
+Show the Vinum request log buffer, like 'vinum info -V'
+end
+define meminfo
+y
+printf "Block\t\tTime\t\tSequence\t  size\t  address\t  line\t\tfile\n"
+set $i = 0
+while $i < malloccount
+  printf "%6d\t%10d.%06d\t%6d\t\t%6d\t0x%08x\t%6d\t\t%s\n", $i, malloced [$i].time.tv_sec, malloced [$i].time.tv_usec, malloced [$i].seq, malloced[$i].size, malloced[$i].address, malloced[$i].line, &malloced[$i].file
+  set $i = $i + 1
+end
+end
+document meminfo
+Equivalent of 'vinum info -v' command
+end
+define finfo
+y
+printf "Block\t\tTime\t\tSequence\t  size\t  address\t  line\t\tfile\n"
+set $i = lastfree
+set $j = 0
+while $j < 64
+  if $i == 64
+    set $i = 0
+  end
+  if freeinfo[$i].line != 0
+    printf "%6d\t%10d.%06d\t%6d\t\t%6d\t0x%08x\t%6d\t\t%s\n", $i, freeinfo [$i].time.tv_sec, freeinfo [$i].time.tv_usec, freeinfo [$i].seq, freeinfo[$i].size, freeinfo[$i].address, freeinfo[$i].line, &freeinfo[$i].file
+  end
+  set $i = $i + 1
+  set $j = $j + 1
+end
+end
+document finfo
+Equivalent of 'vinum info -v' command
+end