update

tock · Feb 15, 2022 · e93e3e5 · e93e3e5
1 parent b4db50a
commit e93e3e5
Showing 1 changed file with 2 additions and 8 deletions.
diff --git a/runtime/src/syscalls_impl_arm.rs b/runtime/src/syscalls_impl_arm.rs
@@ -9,9 +9,6 @@ unsafe impl RawSyscalls for crate::TockSyscalls {
         unsafe {
             asm!("svc 0",
                  inlateout("r0") r0 => _, // a1
-                 lateout("r1") _,         // a2
-                 lateout("r2") _,         // a3
-                 lateout("r3") _,         // a4
                  // r4-r8 are callee-saved.
                  // r9 is platform-specific. We don't use it in libtock_runtime,
                  // so it is either unused or used as a callee-saved register.
@@ -20,7 +17,7 @@ unsafe impl RawSyscalls for crate::TockSyscalls {
                  // r13 is the stack pointer and must be restored by the callee.
                  // r15 is the program counter.
 
-                 clobber_abi("C"), // ip (r12), lr (r14)
+                 clobber_abi("C"), // a2, a3, a4, ip (r12), lr (r14)
             );
         }
     }
@@ -32,9 +29,6 @@ unsafe impl RawSyscalls for crate::TockSyscalls {
         unsafe {
             asm!("svc 0",
                  inlateout("r0") r0 => _, // a1
-                 inlateout("r1") r1 => _, // a2
-                 lateout("r2") _,         // a3
-                 lateout("r3") _,         // a4
                  // r4-r8 are callee-saved.
                  // r9 is platform-specific. We don't use it in libtock_runtime,
                  // so it is either unused or used as a callee-saved register.
@@ -43,7 +37,7 @@ unsafe impl RawSyscalls for crate::TockSyscalls {
                  // r13 is the stack pointer and must be restored by the callee.
                  // r15 is the program counter.
 
-                 clobber_abi("C"), // ip (r12), lr (r14)
+                 clobber_abi("C"), // a2, a3, a4, ip (r12), lr (r14)
             );
         }
     }