added breakpoint

This commit is contained in:
Goren Barak 2023-11-17 14:03:42 -05:00
parent d7c744bc77
commit ba3455fcff
3 changed files with 32 additions and 25 deletions

View file

@ -1,17 +1,5 @@
use crate::parse::ast::*;
pub fn parse_value(value: Value) -> String {
match value {
Value::Number(e) => {
return e.to_string();
},
Value::Var(e) => {
return e.name.to_string();
}
}
}
pub fn fasm_codegen(exprs: Vec<Expr>) -> String {
let mut asm_text = String::new();
let mut asm_data = String::new();
@ -24,8 +12,8 @@ pub fn fasm_codegen(exprs: Vec<Expr>) -> String {
for expr in exprs.iter() {
match expr {
Expr::MathExpr(e) => {
asm_text.push_str(format!("\tmov r10, {}\n", parse_value(e.left)).as_str());
asm_text.push_str(format!("\tmov r11, {}\n", parse_value(e.right)).as_str());
asm_text.push_str(format!("\tmov r10, {}\n", e.left.unwrap()).as_str());
asm_text.push_str(format!("\tmov r11, {}\n", e.right.unwrap()).as_str());
match e.operator {
// If the operator is addition.
MathOperator::OP_ADD => {
@ -65,52 +53,56 @@ pub fn fasm_codegen(exprs: Vec<Expr>) -> String {
match i {
0 => {
// First parameter. Put in %rdi.
asm_text.push_str(format!("\tmov rdi, {:?}\n", parse_value(p.value)).as_str());
asm_text.push_str(format!("\tmov rdi, {}\n", p.value.unwrap()).as_str());
},
1 => {
// Second parameter. Put in %rsi.
asm_text.push_str(format!("\tmov rsi, {:?}\n", parse_value(p.value)).as_str());
asm_text.push_str(format!("\tmov rsi, {}\n", p.value.unwrap()).as_str());
},
2 => {
// Third parameter. Put in %rdx.
asm_text.push_str(format!("\tmov rdx, {:?}\n", parse_value(p.value)).as_str());
asm_text.push_str(format!("\tmov rdx, {}\n", p.value.unwrap()).as_str());
},
3 => {
// Fourth parameter. Put in %rcx.
asm_text.push_str(format!("\tmov rcx, {:?}\n", parse_value(p.value)).as_str());
asm_text.push_str(format!("\tmov rcx, {}\n", p.value.unwrap()).as_str());
},
4 => {
// Fifth parameter. Put in %r8.
asm_text.push_str(format!("\tmov r8, {:?}\n", parse_value(p.value)).as_str());
asm_text.push_str(format!("\tmov r8, {}\n", p.value.unwrap()).as_str());
},
5 => {
// Sixth parameter. Put in %r9.
asm_text.push_str(format!("\tmov r9, {:?}\n", parse_value(p.value)).as_str());
asm_text.push_str(format!("\tmov r9, {}\n", p.value.unwrap()).as_str());
},
_ => {
// Parameters after the sixth parameter are pushed to the stack.
asm_text.push_str(format!("\tpush {:?}\n", parse_value(p.value)).as_str());
asm_text.push_str(format!("\tpush {}\n", p.value.unwrap()).as_str());
}
}
}
asm_text.push_str(format!("call {:?}", e.name).as_str());
asm_text.push_str(format!("call {}", e.name).as_str());
},
Expr::VarDefenition(e) => {
asm_data.push_str(format!("\t{} db {:?}", e.name, parse_value(e.value)).as_str());
asm_data.push_str(format!("\t{} dq {}", e.name, e.value.unwrap()).as_str());
},
Expr::VarReference(e) => {
asm_text.push_str(e.name);
},
Expr::Breakpoint => {
asm_text.push_str("\tint3\n");
},
_ => unimplemented!("sorry unimplemented"),
}
}

View file

@ -7,5 +7,5 @@ use crate::parse::ast::*;
pub mod parse;
fn main() {
fasm_codegen(vec![Expr::VarDefenition(VarDefenition {name: "goren", value: Value::Number(10)}), Expr::MathExpr(Math { left: Value::Var(VarReference {name: "goren"}), right: Value::Number(4), operator: MathOperator::OP_DIV})]);
fasm_codegen(vec![Expr::VarDefenition(VarDefenition {name: "goren", value: Value::Number(10)}), Expr::MathExpr(Math { left: Value::Var(VarReference { name: "goren"}), right: Value::Number(17), operator: MathOperator::OP_MOD}), Expr::Breakpoint]);
}

View file

@ -5,6 +5,7 @@ pub enum Expr<'a> {
FunDefenition(FunDefenition<'a>),
VarDefenition(VarDefenition<'a>),
VarReference(VarReference<'a>),
Breakpoint
}
// MATH EXPRESSION
@ -69,3 +70,17 @@ pub enum Value<'a> {
Var(VarReference<'a>),
Number(u64),
}
impl<'a> Value<'a> {
pub fn unwrap(&self) -> String {
match self {
Value::Number(e) => {
return e.to_string();
},
Value::Var(e) => {
return format!("[{}]", e.name.to_string());
}
}
}
}