openocd/tcl/mem_helper.tcl
Antonio Borneo edefee9880 TCL scripts: collect duplicated procedures
TCL procedures mrw and mmw, originally in DaVinci target code,
are duplicated in other TCL scripts.
Moved in a common helper file, and added help/usage description.

Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
2010-09-21 12:25:59 +02:00

23 lines
630 B
Tcl

# Helper for common memory read/modify/write procedures
# mrw: "memory read word", returns value of $reg
proc mrw {reg} {
set value ""
ocd_mem2array value 32 $reg 1
return $value(0)
}
add_usage_text mrw "address"
add_help_text mrw "Returns value of word in memory."
# mmw: "memory modify word", updates value of $reg
# $reg <== ((value & ~$clearbits) | $setbits)
proc mmw {reg setbits clearbits} {
set old [mrw $reg]
set new [expr ($old & ~$clearbits) | $setbits]
mww $reg $new
}
add_usage_text mmw "address setbits clearbits"
add_help_text mmw "Modify word in memory. new_val = (old_val & ~clearbits) | setbits;"