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use crate::error;
use crate::{
architecture::arm::{ap::MemoryAp, memory::adi_v5_memory_interface::ArmProbe},
CoreRegisterAddress,
};
use anyhow::anyhow;
use anyhow::Result;
pub trait MemoryInterface {
fn read_word_32(&mut self, address: u32) -> Result<u32, error::Error>;
fn read_word_8(&mut self, address: u32) -> Result<u8, error::Error>;
fn read_32(&mut self, address: u32, data: &mut [u32]) -> Result<(), error::Error>;
fn read_8(&mut self, address: u32, data: &mut [u8]) -> Result<(), error::Error>;
fn read_mem_32bit(&mut self, address: u32, data: &mut [u8]) -> Result<(), error::Error> {
if data.len() % 4 != 0 {
return Err(error::Error::Other(anyhow!(
"Call to read_mem_32bit with data.len() not a multiple of 4"
)));
}
let mut buffer = vec![0u32; data.len() / 4];
self.read_32(address, &mut buffer)?;
for (bytes, value) in data.chunks_exact_mut(4).zip(buffer.iter()) {
bytes.copy_from_slice(&u32::to_le_bytes(*value));
}
Ok(())
}
fn read(&mut self, address: u32, data: &mut [u8]) -> Result<(), error::Error> {
if address % 4 == 0 && data.len() % 4 == 0 {
self.read_mem_32bit(address, data)?;
} else {
let start_extra_count = (address % 4) as usize;
let mut buffer = vec![0u8; (start_extra_count + data.len() + 3) / 4 * 4];
self.read_mem_32bit(address - start_extra_count as u32, &mut buffer)?;
data.copy_from_slice(&buffer[start_extra_count..start_extra_count + data.len()]);
}
Ok(())
}
fn write_word_32(&mut self, address: u32, data: u32) -> Result<(), error::Error>;
fn write_word_8(&mut self, address: u32, data: u8) -> Result<(), error::Error>;
fn write_32(&mut self, address: u32, data: &[u32]) -> Result<(), error::Error>;
fn write_8(&mut self, address: u32, data: &[u8]) -> Result<(), error::Error>;
fn flush(&mut self) -> Result<(), error::Error>;
}
impl<T> MemoryInterface for &mut T
where
T: MemoryInterface,
{
fn read_word_32(&mut self, address: u32) -> Result<u32, error::Error> {
(*self).read_word_32(address)
}
fn read_word_8(&mut self, address: u32) -> Result<u8, error::Error> {
(*self).read_word_8(address)
}
fn read_32(&mut self, address: u32, data: &mut [u32]) -> Result<(), error::Error> {
(*self).read_32(address, data)
}
fn read_8(&mut self, address: u32, data: &mut [u8]) -> Result<(), error::Error> {
(*self).read_8(address, data)
}
fn write_word_32(&mut self, addr: u32, data: u32) -> Result<(), error::Error> {
(*self).write_word_32(addr, data)
}
fn write_word_8(&mut self, addr: u32, data: u8) -> Result<(), error::Error> {
(*self).write_word_8(addr, data)
}
fn write_32(&mut self, addr: u32, data: &[u32]) -> Result<(), error::Error> {
(*self).write_32(addr, data)
}
fn write_8(&mut self, addr: u32, data: &[u8]) -> Result<(), error::Error> {
(*self).write_8(addr, data)
}
fn flush(&mut self) -> Result<(), error::Error> {
(*self).flush()
}
}
pub struct Memory<'probe> {
inner: Box<dyn ArmProbe + 'probe>,
ap_sel: MemoryAp,
}
impl<'probe> Memory<'probe> {
pub fn new(memory: impl ArmProbe + 'probe + Sized, ap_sel: MemoryAp) -> Memory<'probe> {
Self {
inner: Box::new(memory),
ap_sel,
}
}
pub fn read_word_32(&mut self, address: u32) -> Result<u32, error::Error> {
let mut buff = [0];
self.inner.read_32(self.ap_sel, address, &mut buff)?;
Ok(buff[0])
}
pub fn read_word_8(&mut self, address: u32) -> Result<u8, error::Error> {
let mut buff = [0];
self.inner.read_8(self.ap_sel, address, &mut buff)?;
Ok(buff[0])
}
pub fn read_32(&mut self, address: u32, data: &mut [u32]) -> Result<(), error::Error> {
self.inner.read_32(self.ap_sel, address, data)
}
pub fn read_8(&mut self, address: u32, data: &mut [u8]) -> Result<(), error::Error> {
self.inner.read_8(self.ap_sel, address, data)
}
pub fn write_word_32(&mut self, addr: u32, data: u32) -> Result<(), error::Error> {
self.inner.write_32(self.ap_sel, addr, &[data])
}
pub fn write_word_8(&mut self, addr: u32, data: u8) -> Result<(), error::Error> {
self.inner.write_8(self.ap_sel, addr, &[data])
}
pub fn write_32(&mut self, addr: u32, data: &[u32]) -> Result<(), error::Error> {
self.inner.write_32(self.ap_sel, addr, data)
}
pub fn write_8(&mut self, addr: u32, data: &[u8]) -> Result<(), error::Error> {
self.inner.write_8(self.ap_sel, addr, data)
}
pub fn flush(&mut self) -> Result<(), error::Error> {
self.inner.flush()
}
pub fn read_core_reg(&mut self, addr: CoreRegisterAddress) -> Result<u32, error::Error> {
self.inner.read_core_reg(self.ap_sel, addr)
}
pub fn write_core_reg(
&mut self,
addr: CoreRegisterAddress,
value: u32,
) -> Result<(), error::Error> {
self.inner.write_core_reg(self.ap_sel, addr, value)
}
}