diff --git a/lib/execute/src/lib.rs b/lib/execute/src/lib.rs
index 5687996822..5b1d939b14 100644
--- a/lib/execute/src/lib.rs
+++ b/lib/execute/src/lib.rs
@@ -8,6 +8,7 @@ extern crate region;
 extern crate wasmstandalone_runtime;
 
 use cretonne_codegen::isa::TargetIsa;
+use cretonne_codegen::binemit::Reloc;
 use std::mem::transmute;
 use region::Protection;
 use region::protect;
@@ -41,11 +42,22 @@ fn relocate(compilation: &mut Compilation, relocations: &wasmstandalone_runtime:
         for ref r in function_relocs {
             let target_func_address: isize = compilation.functions[r.func_index].as_ptr() as isize;
             let body = &mut compilation.functions[i];
-            unsafe {
-                let reloc_address = body.as_mut_ptr().offset(r.offset as isize + 4) as isize;
-                let reloc_addend = r.addend as isize;
-                let reloc_delta_i32 = (target_func_address - reloc_address + reloc_addend) as i32;
-                write_unaligned(reloc_address as *mut i32, reloc_delta_i32);
+            match r.reloc {
+                Reloc::Abs8 => unsafe {
+                    let reloc_address = body.as_mut_ptr().offset(r.offset as isize) as i64;
+                    let reloc_addend = r.addend as i64;
+                    let reloc_abs = target_func_address as i64 + reloc_addend;
+                    write_unaligned(reloc_address as *mut i64, reloc_abs);
+                },
+                Reloc::X86PCRel4 => unsafe {
+                    let reloc_address = body.as_mut_ptr().offset(r.offset as isize) as isize;
+                    let reloc_addend = r.addend as isize;
+                    // TODO: Handle overflow.
+                    let reloc_delta_i32 = (target_func_address - reloc_address + reloc_addend) as
+                        i32;
+                    write_unaligned(reloc_address as *mut i32, reloc_delta_i32);
+                },
+                _ => panic!("unsupported reloc kind"),
             }
         }
     }