src/hotspot/cpu/aarch64/macroAssembler_aarch64.cpp

@@ -2624,13 +2624,13 @@
     }
   }
   fatal("DEBUG MESSAGE: %s", msg);
 }
 
-void MacroAssembler::push_call_clobbered_registers() {
+void MacroAssembler::push_call_clobbered_registers_except(RegSet exclude) {
   int step = 4 * wordSize;
-  push(RegSet::range(r0, r18) - RegSet::of(rscratch1, rscratch2), sp);
+  push(RegSet::range(r0, r18) - RegSet::of(rscratch1, rscratch2) - exclude, sp);
   sub(sp, sp, step);
   mov(rscratch1, -step);
   // Push v0-v7, v16-v31.
   for (int i = 31; i>= 4; i -= 4) {
     if (i <= v7->encoding() || i >= v16->encoding())

@@ -2639,18 +2639,18 @@
   }
   st1(as_FloatRegister(0), as_FloatRegister(1), as_FloatRegister(2),
       as_FloatRegister(3), T1D, Address(sp));
 }
 
-void MacroAssembler::pop_call_clobbered_registers() {
+void MacroAssembler::pop_call_clobbered_registers_except(RegSet exclude) {
   for (int i = 0; i < 32; i += 4) {
     if (i <= v7->encoding() || i >= v16->encoding())
       ld1(as_FloatRegister(i), as_FloatRegister(i+1), as_FloatRegister(i+2),
           as_FloatRegister(i+3), T1D, Address(post(sp, 4 * wordSize)));
   }
 
-  pop(RegSet::range(r0, r18) - RegSet::of(rscratch1, rscratch2), sp);
+  pop(RegSet::range(r0, r18) - RegSet::of(rscratch1, rscratch2) - exclude, sp);
 }
 
 void MacroAssembler::push_CPU_state(bool save_vectors) {
   int step = (save_vectors ? 8 : 4) * wordSize;
   push(0x3fffffff, sp);         // integer registers except lr & sp