# SPDX-License-Identifier: GPL-2.0-or-later # Helper for common memory read/modify/write procedures # mrw: "memory read word", returns value of $reg proc mrw {reg} { return [read_memory $reg 32 1] } add_usage_text mrw "address" add_help_text mrw "Returns value of word in memory." # mrh: "memory read halfword", returns value of $reg proc mrh {reg} { return [read_memory $reg 16 1] } add_usage_text mrh "address" add_help_text mrh "Returns value of halfword in memory." # mrb: "memory read byte", returns value of $reg proc mrb {reg} { return [read_memory $reg 8 1] } add_usage_text mrb "address" add_help_text mrb "Returns value of byte 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;"