Merge pull request #15 from mre/no-std-base

Add no_std support
2018-11-04 20:35:57 +01:00 · 2018-11-04 20:35:57 +01:00 · 0addb59c68
parent 797f27e333 8360aa4518
commit 0addb59c68
7 changed files with 403 additions and 24 deletions
--- a/.gitignore
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@ -1,4 +1,3 @@
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+"checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
--- a/Cargo.toml
+++ b/Cargo.toml
@ -30,7 +30,7 @@
 name = "mos6502"
 description = "A MOS 6502 Emulator"
 license = "BSD-3-Clause"
-version = "0.0.1"
+version = "0.1.0"
 authors = ["The 6502-rs Developers"]
 build = "build.rs"

@ -40,8 +40,12 @@ name = "mos6502"

 [dependencies]
 bitflags = "0.9.1"
-log = "0.3.8"
-num = "0.1"
+log = "0.4.6"
+
+[dependencies.num]
+version = "0.2"
+# no_std support
+default-features = false

 [build-dependencies]
 skeptic = "0.13"
--- a/README.md
+++ b/README.md
@ -113,7 +113,5 @@ fn main() {
    cpu.registers.program_counter = Address(0x4000);

    cpu.run();
-
-    println!("{:?}", cpu);
 }
 ```
--- a/src/address.rs
+++ b/src/address.rs
@ -25,7 +25,7 @@
 // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 // POSSIBILITY OF SUCH DAMAGE.

-use std::ops::Add;
+use core::ops::Add;

 // The idea here is that it doesn't make sense to add two addresses, but it
 // does make sense to add an address and an "address-difference". (If this
--- a/src/cpu.rs
+++ b/src/cpu.rs
@ -25,15 +25,14 @@
 // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 // POSSIBILITY OF SUCH DAMAGE.

-use std;
-
 use address::{Address, AddressDiff};
 use instruction;
 use instruction::{DecodedInstr, Instruction, OpInput};
 use memory::Memory;
 use registers::{Registers, StackPointer, Status, StatusArgs};
-use registers::{PS_CARRY, PS_DECIMAL_MODE, PS_DISABLE_INTERRUPTS, PS_NEGATIVE, PS_OVERFLOW,
-                PS_ZERO};
+use registers::{
+    PS_CARRY, PS_DECIMAL_MODE, PS_DISABLE_INTERRUPTS, PS_NEGATIVE, PS_OVERFLOW, PS_ZERO,
+};

 #[derive(Clone)]
 pub struct CPU {
@ -411,9 +410,8 @@ impl CPU {

    pub fn run(&mut self) {
        while let Some(decoded_instr) = self.fetch_next_and_decode() {
-                self.execute_instruction(decoded_instr);
-            } 
-        
+            self.execute_instruction(decoded_instr);
+        }
    }

    fn set_flags_from_i8(status: &mut Status, value: i8) {
@ -755,8 +753,8 @@ impl CPU {
    }
 }

-impl std::fmt::Debug for CPU {
-    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+impl core::fmt::Debug for CPU {
+    fn fmt(&self, f: &mut core::fmt::Formatter) -> core::fmt::Result {
        write!(
            f,
            "CPU Dump:\n\nAccumulator: {}",
@ -1168,7 +1166,6 @@ mod tests {
        assert!(cpu.registers.status.contains(PS_CARRY));
        assert!(!cpu.registers.status.contains(PS_NEGATIVE));

-
        cpu.execute_instruction((load_instruction, OpInput::UseImmediate(127)));

        compare(&mut cpu, 1);
@ -1176,7 +1173,6 @@ mod tests {
        assert!(cpu.registers.status.contains(PS_CARRY));
        assert!(!cpu.registers.status.contains(PS_NEGATIVE));

-
        cpu.execute_instruction((load_instruction, OpInput::UseImmediate(1)));

        compare(&mut cpu, 2);
@ -1184,7 +1180,6 @@ mod tests {
        assert!(!cpu.registers.status.contains(PS_CARRY));
        assert!(cpu.registers.status.contains(PS_NEGATIVE));

-
        cpu.execute_instruction((load_instruction, OpInput::UseImmediate(20)));

        compare(&mut cpu, -50i8 as u8);
@ -1192,7 +1187,6 @@ mod tests {
        assert!(!cpu.registers.status.contains(PS_CARRY));
        assert!(!cpu.registers.status.contains(PS_NEGATIVE));

-
        cpu.execute_instruction((load_instruction, OpInput::UseImmediate(1)));

        compare(&mut cpu, -1i8 as u8);
@ -1200,7 +1194,6 @@ mod tests {
        assert!(!cpu.registers.status.contains(PS_CARRY));
        assert!(!cpu.registers.status.contains(PS_NEGATIVE));

-
        cpu.execute_instruction((load_instruction, OpInput::UseImmediate(127)));

        compare(&mut cpu, -128i8 as u8);
--- a/src/lib.rs
+++ b/src/lib.rs
@ -25,7 +25,8 @@
 // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 // POSSIBILITY OF SUCH DAMAGE.

-// Needed for debug! / log! macros
+#![no_std]
+
 #[macro_use]
 extern crate log;

@ -35,7 +36,8 @@ extern crate num;
 extern crate bitflags;

 pub mod address;
-pub mod instruction;
 pub mod cpu;
+pub mod instruction;
 pub mod memory;
 pub mod registers;
+