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olivier.gi |
#!/usr/bin/wish
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#------------------------------------------------------------------------------
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# Copyright (C) 2001 Authors
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#
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# This source file may be used and distributed without restriction provided
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# that this copyright statement is not removed from the file and that any
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# derivative work contains the original copyright notice and the associated
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# disclaimer.
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#
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# This source file is free software; you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License as published
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# by the Free Software Foundation; either version 2.1 of the License, or
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# (at your option) any later version.
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#
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# This source is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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# License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with this source; if not, write to the Free Software Foundation,
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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#
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#------------------------------------------------------------------------------
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#
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# File Name: commands.tcl
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#
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olivier.gi |
# Author(s):
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# - Olivier Girard, olgirard@gmail.com
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#
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2 |
olivier.gi |
#------------------------------------------------------------------------------
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15 |
olivier.gi |
# $Rev: 124 $
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# $LastChangedBy: olivier.girard $
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# $LastChangedDate: 2011-10-27 09:38:36 +0200 (Thu, 27 Oct 2011) $
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#------------------------------------------------------------------------------
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2 |
olivier.gi |
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global mem_breakpoint
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###############################################################################
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# #
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# RSP COMMAND PARSER #
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# #
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###############################################################################
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proc rspParse {sock rsp_cmd} {
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set rsp_answer ""
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set cmd_tail [string range $rsp_cmd 1 [string length $rsp_cmd]]
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switch -exact -- [string index $rsp_cmd 0] {
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"!" {set rsp_answer "OK"}
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"?" {set rsp_answer [rsp_stop_reply $sock "?"]}
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"A" {}
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"b" {}
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"c" {set rsp_answer [rsp_c $sock $cmd_tail]}
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"C" {set rsp_answer [rsp_c $sock $cmd_tail]}
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"D" {}
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"F" {}
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"g" {set rsp_answer [rsp_g]}
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"G" {set rsp_answer [rsp_G $cmd_tail]}
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"H" {set rsp_answer ""}
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"i" {}
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"I" {}
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"k" {set rsp_answer [rsp_k $cmd_tail]}
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"m" {set rsp_answer [rsp_m $cmd_tail]}
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"M" {set rsp_answer [rsp_M $cmd_tail]}
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"p" {}
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"P" {}
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"q" {set rsp_answer [rsp_q $sock $cmd_tail]}
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"Q" {}
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"R" {}
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"s" {set rsp_answer [rsp_s $sock $cmd_tail]}
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"S" {set rsp_answer [rsp_s $sock $cmd_tail]}
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"t" {}
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"T" {}
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"v" {}
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"X" {}
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"z" {set rsp_answer [rsp_z $sock $cmd_tail]}
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"Z" {set rsp_answer [rsp_Z $sock $cmd_tail]}
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default {}
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}
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return $rsp_answer
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}
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###############################################################################
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# #
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# RSP COMMANDS #
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# #
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###############################################################################
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#-----------------------------------------------------------------------------#
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# Read CPU registers #
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#-----------------------------------------------------------------------------#
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proc rsp_g {} {
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# Read register value
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set reg_val [ReadRegAll]
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# Format answer
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set rsp_answer ""
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for {set i 0} {$i < [llength $reg_val]} {incr i} {
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regexp {0x(..)(..)} [lindex $reg_val $i] match msb lsb
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append rsp_answer "$lsb$msb"
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}
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return $rsp_answer
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}
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#-----------------------------------------------------------------------------#
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# Write CPU registers #
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#-----------------------------------------------------------------------------#
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proc rsp_G {cmd} {
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# Format register value
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set num_reg [expr [string length $cmd]/4]
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set reg_val ""
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for {set i 0} {$i < $num_reg} {incr i} {
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set lsb "[string index $cmd [expr $i*4+0]][string index $cmd [expr $i*4+1]]"
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set msb "[string index $cmd [expr $i*4+2]][string index $cmd [expr $i*4+3]]"
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lappend reg_val "0x$msb$lsb"
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}
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# Write registers
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WriteRegAll $reg_val
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return "OK"
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}
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#-----------------------------------------------------------------------------#
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# Kill request. #
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#-----------------------------------------------------------------------------#
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proc rsp_k {cmd} {
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# Reset & Stop CPU
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ExecutePOR_Halt
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return "-1"
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}
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#-----------------------------------------------------------------------------#
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# Write length bytes of memory. #
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#-----------------------------------------------------------------------------#
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proc rsp_M {cmd} {
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global mem_breakpoint
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# Parse command
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regexp {(.*),(.*):(.*)} $cmd match addr length data
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set addr [format %04x "0x$addr"]
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set length [format %d "0x$length"]
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# Format data
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set mem_val ""
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for {set i 0} {$i<$length} {incr i} {
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lappend mem_val "0x[string range $data [expr $i*2] [expr $i*2+1]]"
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}
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# Write memory
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olivier.gi |
if {$length==2} {
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regexp {(..)(..)} $data match data_lo data_hi
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WriteMem 0 "0x$addr" "0x${data_hi}${data_lo}"
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} else {
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WriteMemQuick8 "0x$addr" $mem_val
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}
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olivier.gi |
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# Eventually re-set the software breakpoints in case they have been overwritten
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set addr_start [format %d "0x$addr"]
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foreach {brk_addr brk_val} [array get mem_breakpoint] {
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set brk_addr_dec [format %d "0x$brk_addr"]
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set brk_addr_offset [expr $brk_addr_dec-$addr_start]
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if {(0<=$brk_addr_offset) && ($brk_addr_offset<=$length)} {
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set mem_breakpoint($brk_addr) [lindex $mem_val $brk_addr_offset]
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WriteMem 0 "0x$brk_addr" 0x4343
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}
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}
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return "OK"
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}
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#-----------------------------------------------------------------------------#
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# Read length bytes from memory. #
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#-----------------------------------------------------------------------------#
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proc rsp_m {cmd} {
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global mem_breakpoint
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# Parse command
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regexp {(.*),(.*)} $cmd match addr length
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set addr [format %04x "0x$addr"]
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set length [format %d "0x$length"]
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# Read memory
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set data [ReadMemQuick8 "0x$addr" $length]
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olivier.gi |
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olivier.gi |
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# Eventually replace read data by the original software breakpoint value
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set addr_start [format %d "0x$addr"]
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foreach {brk_addr brk_val} [array get mem_breakpoint] {
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set brk_addr_dec [format %d "0x$brk_addr"]
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set brk_addr_offset [expr $brk_addr_dec-$addr_start]
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if {(0<=$brk_addr_offset) && ($brk_addr_offset<=$length)} {
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set data [lreplace $data $brk_addr_offset $brk_addr_offset "0x$mem_breakpoint($brk_addr)"]
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}
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}
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# Format data
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regsub -all {0x} $data {} data
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regsub -all { } $data {} data
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return $data
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}
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#-----------------------------------------------------------------------------#
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# Insert breakpoint. #
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#-----------------------------------------------------------------------------#
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proc rsp_Z {sock cmd} {
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global mem_breakpoint
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# Parse command
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regexp {(.),(.*),(.*)} $cmd match type addr length
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set addr [format %04x "0x$addr"]
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switch -exact -- $type {
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"0" {# Memory breakpoint
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set mem_breakpoint($addr) [ReadMem 0 "0x$addr"]
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WriteMem 0 "0x$addr" 0x4343
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return "OK"
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}
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"1" {# Hardware breakpoint
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if {[SetHWBreak 1 [format "0x%04x" 0x$addr] 1 0]} {
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return "OK"
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}
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return ""
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}
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"2" {# Write watchpoint
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if {[SetHWBreak 0 [format "0x%04x" 0x$addr] 0 1]} {
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return "OK"
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}
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return ""
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}
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"3" {# Read watchpoint
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if {[SetHWBreak 0 [format "0x%04x" 0x$addr] 1 0]} {
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return "OK"
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}
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return ""
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}
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"4" {# Access watchpoint
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if {[SetHWBreak 0 [format "0x%04x" 0x$addr] 1 1]} {
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return "OK"
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}
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return ""
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}
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default {return ""}
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}
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}
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#-----------------------------------------------------------------------------#
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# Remove breakpoint. #
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#-----------------------------------------------------------------------------#
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proc rsp_z {sock cmd} {
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global mem_breakpoint
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# Parse command
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regexp {(.),(.*),(.*)} $cmd match type addr length
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set addr [format %04x "0x$addr"]
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switch -exact -- $type {
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"0" {# Memory breakpoint
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WriteMem 0 "0x$addr" $mem_breakpoint($addr)
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unset mem_breakpoint($addr)
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return "OK"
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}
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"1" {# Hardware breakpoint
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if {[ClearHWBreak 1 [format "0x%04x" 0x$addr]]} {
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return "OK"
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}
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| 293 |
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return ""
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| 294 |
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}
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| 295 |
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"2" {# Write watchpoint
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| 297 |
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if {[ClearHWBreak 0 [format "0x%04x" 0x$addr]]} {
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return "OK"
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| 299 |
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}
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| 300 |
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return ""
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| 301 |
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}
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| 302 |
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"3" {# Read watchpoint
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| 304 |
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if {[ClearHWBreak 0 [format "0x%04x" 0x$addr]]} {
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return "OK"
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| 306 |
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}
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| 307 |
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return ""
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}
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| 309 |
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"4" {# Access watchpoint
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| 311 |
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if {[ClearHWBreak 0 [format "0x%04x" 0x$addr]]} {
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return "OK"
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| 313 |
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}
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| 314 |
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return ""
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| 315 |
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}
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| 316 |
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| 317 |
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default {return ""}
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| 318 |
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}
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| 319 |
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}
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| 320 |
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#-----------------------------------------------------------------------------#
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| 322 |
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# Continue. #
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| 323 |
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#-----------------------------------------------------------------------------#
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| 324 |
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proc rsp_c {sock cmd} {
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| 325 |
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| 326 |
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# Set address if required
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| 327 |
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if {$cmd!=""} {
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set cmd [format %04x "0x$cmd"]
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| 329 |
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SetPC "0x$cmd"
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| 330 |
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}
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| 331 |
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| 332 |
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# Clear status
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| 333 |
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ClrStatus
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| 334 |
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# Continue
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| 336 |
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ReleaseCPU
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| 339 |
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return [rsp_stop_reply $sock "c"]
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| 340 |
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}
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| 341 |
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| 342 |
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#-----------------------------------------------------------------------------#
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| 343 |
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# Step. #
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| 344 |
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#-----------------------------------------------------------------------------#
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| 345 |
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proc rsp_s {sock cmd} {
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| 346 |
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| 347 |
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# Set address if required
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| 348 |
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if {$cmd!=""} {
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| 349 |
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set cmd [format %04x "0x$cmd"]
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| 350 |
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SetPC "0x$cmd"
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| 351 |
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}
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| 352 |
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| 353 |
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# Clear status
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| 354 |
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ClrStatus
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| 355 |
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| 356 |
124 |
olivier.gi |
# Read current PC value
|
| 357 |
|
|
set pc [ReadReg 0]
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| 358 |
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| 359 |
2 |
olivier.gi |
# Incremental step
|
| 360 |
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StepCPU
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| 361 |
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| 362 |
124 |
olivier.gi |
return [rsp_stop_reply $sock "s" $pc]
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| 363 |
2 |
olivier.gi |
}
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| 364 |
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| 365 |
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|
|
#-----------------------------------------------------------------------------#
|
| 367 |
|
|
# The `C', `c', `S', `s', `vCont', `vAttach', `vRun', `vStopped', and `?' #
|
| 368 |
|
|
# packets can receive any of the below as a reply. Except for `?' and #
|
| 369 |
|
|
# `vStopped', that reply is only returned when the target halts. #
|
| 370 |
|
|
#-----------------------------------------------------------------------------#
|
| 371 |
124 |
olivier.gi |
proc rsp_stop_reply {sock cmd {opt_val "0"}} {
|
| 372 |
2 |
olivier.gi |
|
| 373 |
|
|
# Wait until halted
|
| 374 |
|
|
while {![IsHalted]} {
|
| 375 |
|
|
|
| 376 |
|
|
# Wait a few milliseconds to prevent the gui from freezing
|
| 377 |
|
|
after 100 {set end 1}
|
| 378 |
|
|
vwait end
|
| 379 |
|
|
|
| 380 |
|
|
# Check if we are interrupted by GDB
|
| 381 |
|
|
fconfigure $sock -blocking 0
|
| 382 |
|
|
set break_char [read -nonewline $sock]
|
| 383 |
|
|
fconfigure $sock -blocking 1
|
| 384 |
|
|
binary scan $break_char H* break_char
|
| 385 |
|
|
if {$break_char=="03"} {
|
| 386 |
|
|
putsVerbose "--> BREAK"
|
| 387 |
|
|
HaltCPU
|
| 388 |
|
|
}
|
| 389 |
|
|
}
|
| 390 |
|
|
|
| 391 |
|
|
# Read some important registers
|
| 392 |
|
|
set pc [ReadReg 0]
|
| 393 |
|
|
regexp {0x(..)(..)} $pc match pc_hi pc_lo
|
| 394 |
|
|
set r4 [ReadReg 4]
|
| 395 |
|
|
regexp {0x(..)(..)} $r4 match r4_hi r4_lo
|
| 396 |
|
|
|
| 397 |
124 |
olivier.gi |
# In case of a single step command, make sure that the PC
|
| 398 |
|
|
# value changes. If not, return an error otherwise GDB will
|
| 399 |
|
|
# end-up in an infinite loop.
|
| 400 |
|
|
if {$cmd == "s"} {
|
| 401 |
|
|
if {$opt_val == $pc} {
|
| 402 |
|
|
return "E05"
|
| 403 |
|
|
}
|
| 404 |
|
|
}
|
| 405 |
|
|
#return "S05"
|
| 406 |
|
|
return "T0500:$pc_lo$pc_hi;04:$r4_lo$r4_hi;"
|
| 407 |
2 |
olivier.gi |
}
|
| 408 |
|
|
|
| 409 |
|
|
|
| 410 |
|
|
#-----------------------------------------------------------------------------#
|
| 411 |
|
|
# #
|
| 412 |
|
|
#-----------------------------------------------------------------------------#
|
| 413 |
|
|
proc rsp_q {sock cmd} {
|
| 414 |
|
|
|
| 415 |
|
|
switch -regexp -- $cmd {
|
| 416 |
|
|
|
| 417 |
|
|
"C" {set rsp_answer ""}
|
| 418 |
|
|
"Offsets" {set rsp_answer "Text=0;Data=0;Bss=0"}
|
| 419 |
|
|
"Rcmd,.+" {set rsp_answer [rsp_qRcmd $sock $cmd]}
|
| 420 |
|
|
default {set rsp_answer ""}
|
| 421 |
|
|
}
|
| 422 |
|
|
return $rsp_answer
|
| 423 |
|
|
}
|
| 424 |
|
|
|
| 425 |
|
|
#-----------------------------------------------------------------------------#
|
| 426 |
|
|
# qRcmd,command' #
|
| 427 |
|
|
# command (hex encoded) is passed to the local interpreter for execution. #
|
| 428 |
|
|
# Invalid commands should be reported using the output string. Before the #
|
| 429 |
|
|
# final result packet, the target may also respond with a number of #
|
| 430 |
|
|
# intermediate `Ooutput' console output packets. Implementors should note #
|
| 431 |
|
|
# that providing access to a stubs's interpreter may have security #
|
| 432 |
|
|
# implications. #
|
| 433 |
|
|
#-----------------------------------------------------------------------------#
|
| 434 |
|
|
proc rsp_qRcmd {sock cmd} {
|
| 435 |
|
|
|
| 436 |
|
|
regsub {^Rcmd,} $cmd {} cmd
|
| 437 |
|
|
set cmd [binary format H* $cmd]; # Convert hex to ascii
|
| 438 |
|
|
|
| 439 |
|
|
switch -exact -- $cmd {
|
| 440 |
|
|
"erase all" {;# Convert ascii to hex
|
| 441 |
|
|
binary scan "Erasing target program memory..." H* text1
|
| 442 |
|
|
binary scan " Erased OK\n" H* text2
|
| 443 |
|
|
;# Execute erase command
|
| 444 |
|
|
sendRSPpacket $sock "O$text1"
|
| 445 |
|
|
EraseROM
|
| 446 |
|
|
sendRSPpacket $sock "O$text2"
|
| 447 |
|
|
set rsp_answer "OK"
|
| 448 |
|
|
}
|
| 449 |
|
|
default {set rsp_answer "OK"}
|
| 450 |
|
|
}
|
| 451 |
|
|
|
| 452 |
|
|
return $rsp_answer
|
| 453 |
|
|
|
| 454 |
|
|
}
|
