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-rw-r--r--examples/tiny_vm.rs12
1 files changed, 6 insertions, 6 deletions
diff --git a/examples/tiny_vm.rs b/examples/tiny_vm.rs
index bdeb202..992b684 100644
--- a/examples/tiny_vm.rs
+++ b/examples/tiny_vm.rs
@@ -36,9 +36,6 @@
//! }
//! ```
-#[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::Runtime;
use juicebox_asm::{Asm, Imm16, Imm64, Label, MemOp, Reg16, Reg64};
@@ -258,6 +255,7 @@ impl TinyVm {
}
}
+ #[cfg(all(any(target_arch = "x86_64", target_os = "linux")))]
/// Translate the bb at the current pc and return a JitFn pointer to it.
fn translate_next_bb(&mut self) -> JitFn {
let mut bb = Asm::new();
@@ -268,13 +266,15 @@ impl TinyVm {
pc = pc.wrapping_add(1);
- // JIT ABI.
+ // JIT abi: JitFn -> JitRet
+ //
+ // According to SystemV abi:
// enter
// rdi => regs
// rsi => dmem
// exit
- // rax => JitRet(0,
- // rdx => 1)
+ // rax => JitRet.0
+ // rdx => JitRet.1
// Generate memory operand into regs for guest register.
let reg_op = |r: TinyReg| {