Start debugger repl

Cargo.lock

@@ -8,6 +8,23 @@ dependencies = [
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+ "blake2-rfc 0.2.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "scoped_threadpool 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+ "nodrop 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
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@@ -23,6 +40,27 @@ name = "autocfg"
 version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
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+ "backtrace-sys 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-demangle 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+ "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
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@@ -33,11 +71,30 @@ name = "bitflags"
 version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+ "arrayvec 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "constant_time_eq 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
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+
 [[package]]
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+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
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@@ -53,6 +110,39 @@ dependencies = [
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 ]
 
+[[package]]
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+ "dirs-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
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+ "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "redox_users 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
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@@ -63,11 +153,88 @@ dependencies = [
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+ "ryu 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
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+ "static_assertions 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+ "cc 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+ "memchr 2.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
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@@ -89,11 +256,61 @@ name = "numtoa"
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+[[package]]
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+dependencies = [
+ "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
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+
 [[package]]
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+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+
 [[package]]
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@@ -107,6 +324,17 @@ dependencies = [
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Cargo.toml

@@ -9,4 +9,6 @@ byteorder = "*"
 enum-primitive-derive = "^0.1"
 num-traits = "^0.1"
 bit = "^0.1"
-clap = {version = "2.33", features = ["color", "yaml"]}
+clap = {version = "2.33", features = ["color", "yaml"]}
+rustyline = "5.0.0"
+nom = "5.0.0"

src/debugger.rs

@@ -0,0 +1,89 @@
+use std::str::FromStr;
+
+use rustyline::error::ReadlineError;
+use rustyline::Editor;
+
+use nom;
+use nom::bytes;
+use nom::IResult;
+
+use super::arm7tdmi::arm;
+use super::arm7tdmi::cpu;
+use super::sysbus::SysBus;
+
+#[derive(Debug)]
+pub struct Debugger {
+    cpu: cpu::Core,
+    sysbus: SysBus,
+}
+
+#[derive(Debug, PartialEq)]
+pub enum DebuggerError {
+    ParsingError,
+}
+
+impl From<nom::Err<(&str, nom::error::ErrorKind)>> for DebuggerError {
+    fn from(e: nom::Err<(&str, nom::error::ErrorKind)>) -> DebuggerError {
+        DebuggerError::ParsingError
+    }
+}
+
+type DebuggerResult<T> = Result<T, DebuggerError>;
+
+#[derive(Debug, PartialEq)]
+enum DebuggerCommand {
+    SingleStep,
+    Continue,
+    Disass { addr: u32, num_opcodes: u32 },
+    Stop,
+    Nop,
+}
+
+fn parse_debugger_command(input: &str) -> IResult<&str, DebuggerCommand> {
+    let (input, command_name) = bytes::complete::take_while1(|c: char| c.is_alphanumeric())(input)?;
+    println!("parsed command: {}", command_name);
+
+    unimplemented!()
+}
+
+impl FromStr for DebuggerCommand {
+    type Err = DebuggerError;
+
+    fn from_str(text: &str) -> Result<Self, Self::Err> {
+        
+    }
+}
+
+impl Debugger {
+    pub fn new(cpu: cpu::Core, sysbus: SysBus) -> Debugger {
+        Debugger {
+            cpu: cpu,
+            sysbus: sysbus,
+        }
+    }
+
+    pub fn repl(&self) -> DebuggerResult<()> {
+        let mut rl = Editor::<()>::new();
+        loop {
+            let readline = rl.readline("(rustboyadvance-dbg) >> ");
+            match readline {
+                Ok(line) => {
+                    let command = parse_debugger_command(&line)?;
+                }
+                Err(ReadlineError::Interrupted) => {
+                    println!("CTRL-C");
+                    break;
+                }
+                Err(ReadlineError::Eof) => {
+                    println!("CTRL-D");
+                    break;
+                }
+                Err(err) => {
+                    println!("Error: {:?}", err);
+                    break;
+                }
+            }
+        }
+        Ok(())
+    }
+}

src/main.rs

@@ -17,17 +17,27 @@ use byteorder::{LittleEndian, ReadBytesExt};
 extern crate clap;
 use clap::{App, ArgMatches};
 
+extern crate rustyline;
+
+#[macro_use]
+extern crate nom;
+
 pub mod sysbus;
 use sysbus::SysBus;
+
 mod arm7tdmi;
 use arm7tdmi::arm;
 use arm7tdmi::cpu;
 
+mod debugger;
+use debugger::{Debugger, DebuggerError};
+
 #[derive(Debug)]
 pub enum GBAError {
     IO(io::Error),
     ArmDecodeError(arm::ArmDecodeError),
     CpuError(cpu::CpuError),
+    DebuggerError(DebuggerError)
 }
 
 pub type GBAResult<T> = Result<T, GBAError>;
@@ -50,6 +60,13 @@ impl From<cpu::CpuError> for GBAError {
     }
 }
 
+impl From<DebuggerError> for GBAError {
+    fn from(err: DebuggerError) -> GBAError {
+        GBAError::DebuggerError(err)
+    }
+}
+
+
 fn read_bin_file(filename: &str) -> GBAResult<Vec<u8>> {
     let mut buf = Vec::new();
     let mut file = File::open(filename)?;
@@ -90,8 +107,13 @@ fn run_debug(matches: &ArgMatches) -> GBAResult<()> {
 
     let sysbus = SysBus::new(bios_bin);
     let core = cpu::Core::new();
+    let debugger = Debugger::new(core, sysbus);
 
-    unimplemented!()
+    println!("starting debugger...");
+    debugger.repl()?;
+    println!("ending debugger...");
+
+    Ok(())
 }
 
 fn main() {