Mercurial > hg > graal-jvmci-8

diff src/os_cpu/linux_sparc/vm/assembler_linux_sparc.cpp @ 237:1fdb98a17101

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6716785: implicit null checks not triggering with CompressedOops Summary: allocate alignment-sized page(s) below java heap so that memory accesses at heap_base+1page give signal and cause an implicit null check Reviewed-by: kvn, jmasa, phh, jcoomes
author coleenp
date Sat, 19 Jul 2008 17:38:22 -0400
parents d1605aabd0a1
children c18cbe5936b8
line wrap: on
line diff
--- a/src/os_cpu/linux_sparc/vm/assembler_linux_sparc.cpp	Fri Jul 11 01:14:44 2008 -0700
+++ b/src/os_cpu/linux_sparc/vm/assembler_linux_sparc.cpp	Sat Jul 19 17:38:22 2008 -0400
@@ -27,12 +27,6 @@
 
 #include <asm-sparc/traps.h>
 
-bool MacroAssembler::needs_explicit_null_check(intptr_t offset) {
-  // Since the linux kernel resides at the low end of
-  // user address space, no null pointer check is needed.
-  return offset < 0 || offset >= 0x100000;
-}
-
 void MacroAssembler::read_ccr_trap(Register ccr_save) {
   // No implementation
   breakpoint_trap();