Add DebugRead trait
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@ -41,3 +41,24 @@ pub trait Bus {
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bytes
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}
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}
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/// Helper trait for reading memory as if we were an all-powerfull debugger
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pub trait DebugRead: Bus {
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fn debug_read_32(&self, addr: Addr) -> u32 {
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self.debug_read_16(addr) as u32 | (self.debug_read_16(addr + 2) as u32) << 16
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}
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fn debug_read_16(&self, addr: Addr) -> u16 {
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self.debug_read_8(addr) as u16 | (self.debug_read_8(addr + 1) as u16) << 8
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}
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fn debug_read_8(&self, addr: Addr) -> u8;
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fn debug_get_bytes(&self, range: std::ops::Range<u32>) -> Vec<u8> {
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let mut bytes = Vec::new();
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for b in range {
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bytes.push(self.debug_read_8(b));
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}
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bytes
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}
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}
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@ -2,7 +2,7 @@ use std::collections::HashMap;
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use serde::{Deserialize, Serialize};
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use super::{Addr, Bus};
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use super::bus::*;
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pub mod header;
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use header::CartridgeHeader;
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@ -133,3 +133,10 @@ impl Bus for Cartridge {
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self.default_write_16(addr, value);
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}
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}
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impl DebugRead for Cartridge {
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fn debug_read_8(&self, addr: Addr) -> u8 {
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let offset = (addr & 0x01ff_ffff) as usize;
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self.bytes[offset]
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}
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}
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@ -4,9 +4,9 @@ use std::time;
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use crate::arm7tdmi::arm::ArmInstruction;
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use crate::arm7tdmi::thumb::ThumbInstruction;
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use crate::arm7tdmi::CpuState;
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use crate::bus::{Addr, Bus, DebugRead};
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use crate::disass::Disassembler;
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use crate::util::{read_bin_file, write_bin_file};
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use crate::{Addr, Bus};
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// use super::palette_view::create_palette_view;
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// use super::tile_view::create_tile_view;
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@ -135,7 +135,7 @@ impl Debugger {
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println!("that took {:?} seconds", end - start);
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}
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HexDump(addr, nbytes) => {
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let bytes = self.gba.sysbus.get_bytes(addr..addr + nbytes);
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let bytes = self.gba.sysbus.debug_get_bytes(addr..addr + nbytes);
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hexdump::hexdump(&bytes);
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}
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MemWrite(size, addr, val) => match size {
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@ -144,7 +144,7 @@ impl Debugger {
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MemWriteCommandSize::Word => self.gba.sysbus.write_32(addr, val as u32),
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},
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Disass(mode, addr, n) => {
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let bytes = self.gba.sysbus.get_bytes(addr..addr + n);
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let bytes = self.gba.sysbus.debug_get_bytes(addr..addr + n);
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match mode {
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DisassMode::ModeArm => {
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let disass = Disassembler::<ArmInstruction>::new(addr, &bytes);
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@ -4,12 +4,12 @@ use std::rc::Rc;
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use serde::{Deserialize, Serialize};
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use super::bus::*;
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use super::dma::{DmaNotifer, TIMING_HBLANK, TIMING_VBLANK};
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use super::interrupt::{self, Interrupt, SharedInterruptFlags};
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pub use super::sysbus::consts::*;
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use super::util::BoxedMemory;
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use super::VideoInterface;
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use super::{Addr, Bus};
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use crate::bitfield::Bit;
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use crate::num::FromPrimitive;
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@ -575,6 +575,18 @@ impl Bus for Gpu {
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}
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}
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impl DebugRead for Gpu {
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fn debug_read_8(&self, addr: Addr) -> u8 {
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let page = (addr >> 24) as usize;
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match page {
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PAGE_PALRAM => self.palette_ram.read_8(addr),
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PAGE_VRAM => self.vram.read_8(addr),
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PAGE_OAM => self.vram.read_8(addr),
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_ => unreachable!(),
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}
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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@ -1,5 +1,6 @@
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use std::cmp;
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use super::bus::*;
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use super::dma::DmaController;
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use super::gpu::regs::WindowFlags;
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use super::gpu::*;
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@ -8,7 +9,6 @@ use super::keypad;
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use super::sound::SoundController;
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use super::sysbus::SysBusPtr;
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use super::timer::Timers;
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use super::{Addr, Bus};
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use serde::{Deserialize, Serialize};
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@ -290,6 +290,12 @@ impl Bus for IoDevices {
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}
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}
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impl DebugRead for IoDevices {
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fn debug_read_8(&self, addr: Addr) -> u8 {
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self.read_8(addr)
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}
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}
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bitfield! {
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#[derive(Serialize, Deserialize, Default, Copy, Clone, PartialEq)]
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pub struct WaitControl(u16);
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@ -2,10 +2,10 @@ use std::fmt;
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use serde::{Deserialize, Serialize};
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use super::bus::*;
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use super::cartridge::Cartridge;
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use super::dma::DmaNotifer;
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use super::iodev::{IoDevices, WaitControl};
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use super::{Addr, Bus};
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use super::util::{BoxedMemory, WeakPointer};
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pub mod consts {
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@ -324,6 +324,12 @@ impl Bus for SysBus {
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}
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}
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impl DebugRead for SysBus {
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fn debug_read_8(&self, addr: Addr) -> u8 {
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memory_map!(read(self, debug_read_8, addr, u8)) as u8
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}
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}
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impl DmaNotifer for SysBus {
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fn notify(&mut self, timing: u16) {
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self.io.dmac.notify_from_gpu(timing);
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@ -6,7 +6,7 @@ use std::path::Path;
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use std::ptr;
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use std::time;
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use super::bus::{Addr, Bus};
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use super::bus::{Addr, Bus, DebugRead};
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#[cfg(not(target_arch = "wasm32"))]
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type Instant = time::Instant;
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@ -216,3 +216,9 @@ impl Bus for BoxedMemory {
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}
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}
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}
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impl DebugRead for BoxedMemory {
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fn debug_read_8(&self, addr: Addr) -> u8 {
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self.mem[addr as usize]
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}
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}
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