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# Defines basic Tcl procs that must exist for OpenOCD scripts to work.
#
# Embedded into OpenOCD executable
#
# Help text list. A list of command + help text pairs.
#
# Commands can be more than one word and they are stored
# as "flash banks" "help text x x x"
proc add_help_text {cmd cmd_help} {
global ocd_helptext
lappend ocd_helptext [list $cmd $cmd_help]
}
proc get_help_text {} {
global ocd_helptext
return $ocd_helptext
}
# We need to explicitly redirect this to the OpenOCD command
# as Tcl defines the exit proc
proc exit {} {
ocd_throw exit
}
#Print help text for a command. Word wrap
#help text that is too wide inside column.
proc help {args} {
global ocd_helptext
set cmd $args
foreach a [lsort $ocd_helptext] {
if {[string length $cmd] == 0 || \
[string first $cmd $a] != -1 || \
[string first $cmd [lindex $a 1]] != -1} \
{
set w 50
set cmdname [lindex $a 0]
set h [lindex $a 1]
set n 0
while 1 {
if {$n > [string length $h]} {break}
set next_a [expr $n + $w]
if {[string length $h] > $n + $w} \
{
set xxxx [string range $h $n [expr $n + $w]]
for {set lastpos [expr [string length $xxxx] - 1]} \
{$lastpos >= 0 && [string compare \
[string range $xxxx $lastpos $lastpos] " "] != 0} \
{set lastpos [expr $lastpos - 1]} \
{
}
#set next_a -1
if {$lastpos != -1} {
set next_a [expr $lastpos + $n + 1]
}
}
puts [format "%-25s %s" $cmdname \
[string range $h $n [expr $next_a-1]] ]
set cmdname ""
set n [expr $next_a]
}
}
}
}
add_help_text help "Tcl implementation of help command"
# If a fn is unknown to Tcl, we try to execute it as an OpenOCD command
#
# We also support two level commands. "flash banks" is translated to
# flash_banks
proc unknown {args} {
# do the name mangling from "flash banks" to "flash_banks"
if {[llength $args]>=2} {
set cmd_name "[lindex $args 0]_[lindex $args 1]"
if {[catch {info body $cmd_name}]==0} {
# the command exists, try it...
return [eval "$cmd_name [lrange $args 2 end]"]
}
}
# This really is an unknown command.
return -code error "Unknown command: $args"
}
proc new_target_name { } {
return [target number [expr [target count] - 1 ]]
}
# Try flipping / and \ to find file if the filename does not
# match the precise spelling
proc find {filename} {
if {[catch {ocd_find $filename} t]==0} {
return $t
}
if {[catch {ocd_find [string map {\ /} $filename} t]==0} {
return $t
}
if {[catch {ocd_find [string map {/ \\} $filename} t]==0} {
return $t
}
# make sure error message matches original input string
return -code error "Can't find $filename"
}
add_help_text find "<file> - print full path to file according to OpenOCD search rules"
# Run script
proc script {filename} {
source [find $filename]
}
add_help_text script "<filename> - filename of OpenOCD script (tcl) to run"
#########
# catch any exceptions, capture output and return output
proc capture_catch {a} {
catch {
capture {uplevel $a}
} result
return $result
}
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