--- old/src/cpu/aarch64/vm/macroAssembler_aarch64.cpp	2016-01-11 15:10:32.644904000 +0000
+++ new/src/cpu/aarch64/vm/macroAssembler_aarch64.cpp	2016-01-11 15:10:32.384904000 +0000
@@ -2301,6 +2301,30 @@
 }
 #endif
 
+void MacroAssembler::push_call_clobbered_registers() {
+  push(RegSet::range(r0, r18) - RegSet::of(rscratch1, rscratch2), sp);
+
+  // Push v0-v7, v16-v31.
+  for (int i = 30; i >= 0; i -= 2) {
+    if (i <= v7->encoding() || i >= v16->encoding()) {
+        stpd(as_FloatRegister(i), as_FloatRegister(i+1),
+             Address(pre(sp, -2 * wordSize)));
+    }
+  }
+}
+
+void MacroAssembler::pop_call_clobbered_registers() {
+
+  for (int i = 0; i < 32; i += 2) {
+    if (i <= v7->encoding() || i >= v16->encoding()) {
+      ldpd(as_FloatRegister(i), as_FloatRegister(i+1),
+           Address(post(sp, 2 * wordSize)));
+    }
+  }
+
+  pop(RegSet::range(r0, r18) - RegSet::of(rscratch1, rscratch2), sp);
+}
+
 void MacroAssembler::push_CPU_state(bool save_vectors) {
   push(0x3fffffff, sp);         // integer registers except lr & sp
 
@@ -3099,12 +3123,7 @@
 
   assert(CardTableModRefBS::dirty_card_val() == 0, "must be");
 
-  {
-    ExternalAddress cardtable((address) ct->byte_map_base);
-    unsigned long offset;
-    adrp(rscratch1, cardtable, offset);
-    assert(offset == 0, "byte_map_base is misaligned");
-  }
+  load_byte_map_base(rscratch1);
 
   if (UseCondCardMark) {
     Label L_already_dirty;
@@ -3596,12 +3615,10 @@
 
   lsr(card_addr, store_addr, CardTableModRefBS::card_shift);
 
-  unsigned long offset;
-  adrp(tmp2, cardtable, offset);
-
   // get the address of the card
+  load_byte_map_base(tmp2);
   add(card_addr, card_addr, tmp2);
-  ldrb(tmp2, Address(card_addr, offset));
+  ldrb(tmp2, Address(card_addr));
   cmpw(tmp2, (int)G1SATBCardTableModRefBS::g1_young_card_val());
   br(Assembler::EQ, done);
 
@@ -3609,13 +3626,13 @@
 
   membar(Assembler::StoreLoad);
 
-  ldrb(tmp2, Address(card_addr, offset));
+  ldrb(tmp2, Address(card_addr));
   cbzw(tmp2, done);
 
   // storing a region crossing, non-NULL oop, card is clean.
   // dirty card and log.
 
-  strb(zr, Address(card_addr, offset));
+  strb(zr, Address(card_addr));
 
   ldr(rscratch1, queue_index);
   cbz(rscratch1, runtime);
@@ -3971,6 +3988,9 @@
   long offset_low = dest_page - low_page;
   long offset_high = dest_page - high_page;
 
+  assert(is_valid_AArch64_address(dest.target()), "bad address");
+  assert(dest.getMode() == Address::literal, "ADRP must be applied to a literal address");
+
   InstructionMark im(this);
   code_section()->relocate(inst_mark(), dest.rspec());
   // 8143067: Ensure that the adrp can reach the dest from anywhere within
@@ -3982,11 +4002,26 @@
     long offset = dest_page - pc_page;
     offset = (offset & ((1<<20)-1)) << 12;
     _adrp(reg1, pc()+offset);
-    movk(reg1, ((unsigned long)dest.target() >> 32) & 0xffff, 32);
+    movk(reg1, (unsigned long)dest.target() >> 32, 32);
   }
   byte_offset = (unsigned long)dest.target() & 0xfff;
 }
 
+void MacroAssembler::load_byte_map_base(Register reg) {
+  jbyte *byte_map_base =
+    ((CardTableModRefBS*)(Universe::heap()->barrier_set()))->byte_map_base;
+
+  if (is_valid_AArch64_address((address)byte_map_base)) {
+    // Strictly speaking the byte_map_base isn't an address at all,
+    // and it might even be negative.
+    unsigned long offset;
+    adrp(reg, ExternalAddress((address)byte_map_base), offset);
+    assert(offset == 0, "misaligned card table base");
+  } else {
+    mov(reg, (uint64_t)byte_map_base);
+  }
+}
+
 void MacroAssembler::build_frame(int framesize) {
   assert(framesize > 0, "framesize must be > 0");
   if (framesize < ((1 << 9) + 2 * wordSize)) {