gen/
gen.rs

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//! Add example.
+//!
+//! Jit compile a function at runtime (generate native host code) which calls a function defined in
+//! the example based on the SystemV abi to demonstrate the [`juicebox_asm`] crate.
+
+#[cfg(not(any(target_arch = "x86_64", target_os = "linux")))]
+compile_error!("Only supported on x86_64 with SystemV abi");
+
+use juicebox_asm::insn::*;
+use juicebox_asm::{Asm, Imm8, Reg64::*, Runtime};
+use juicebox_asm::{Mem16, Mem32, Mem64, Mem8};
+
+extern "C" fn add(a: u32, b: u32) -> u32 {
+    a + b
+}
+
+fn main() {
+    let mut asm1 = Asm::new();
+    //asm1.add(Mem16::indirect(rdi), Imm8::from(0x80u8));
+    asm1.test(rax, rax);
+    asm1.cmp(Mem8::indirect(rax), Imm8::from(0u8));
+    asm1.ret();
+
+    let code = asm1.into_code();
+    std::fs::write("jit.asm", &code).unwrap();
+
+    let mut asm2 = Asm::new();
+    //asm2.mov(Reg16::cx, Imm16::from(1u16));
+    //asm2.mov(Mem::Indirect(rdi), Reg16::cx);
+    asm2.ret();
+
+    let mut rt = Runtime::new();
+    let fn1 = unsafe { rt.add_code::<extern "C" fn(*mut u64)>(code) };
+    let fn2 = unsafe { rt.add_code::<extern "C" fn(*mut u64)>(asm2.into_code()) };
+
+    let mut data = 0xffff_ffff_ffff_ff80u64;
+    fn1(&mut data as *mut u64);
+    println!("data={:x}", data);
+
+    let mut data = 0xffff_ffff_ffff_ffffu64;
+    fn2(&mut data as *mut u64);
+    println!("data={:x}", data);
+}
+

gen/gen.rs

gen/
gen.rs