Add mips support for QemuTracerHelper (#941)

* Add mips support for QemuTracerHelper

* Formatting

Ran cargo +nightly fmt

* Removed unnecessary `any`

* Removed cfg guarding calls module

Co-authored-by: Andrea Fioraldi <andreafioraldi@gmail.com>

libafl_qemu/src/calls.rs

@@ -99,6 +99,13 @@ where
         ret_addr
     };
 
+    #[cfg(cpu_target = "mips")]
+    let ret_addr = {
+        let emu = hooks.emulator();
+        let ret_addr: GuestAddr = emu.read_reg(Regs::Ra).unwrap();
+        ret_addr
+    };
+
     // eprintln!("RET @ 0x{:#x}", ret_addr);
 
     if let Some(h) = hooks

libafl_qemu/src/lib.rs

@@ -76,7 +76,6 @@ pub use asan::{init_with_asan, QemuAsanHelper};
 
 pub mod blocks;
 
-#[cfg(not(cpu_target = "mips"))]
 pub mod calls;
 pub mod drcov;