libmwemu 0.25.4

x86 32/64bits and system internals emulator, for securely emulating malware and other stuff.
Documentation 
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use crate::emu::Emu;
use yaxpeax_arm::armv8::a64::Instruction;

use super::super::helpers::*;

pub fn execute(emu: &mut Emu, ins: &Instruction) -> bool {
    let is64 = operand_is_64(&ins.operands[0]);
    let (addr, wb) = resolve_mem_addr(emu, &ins.operands[1]);
    let val = match emu.maps.read_byte(addr) {
        Some(v) => {
            if is64 {
                (v as i8) as i64 as u64
            } else {
                (v as i8) as i32 as u32 as u64
            }
        }
        None => {
            log::warn!("LDURSB: cannot read at 0x{:x}", addr);
            return false;
        }
    };
    write_reg(emu, &ins.operands[0], val);
    do_writeback(emu, wb);
    true
}