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7035861: linux-armsflt: assert(ni->data() == (int)(x + o)) failed: instructions must match

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The change avoids generating relocation info entry for the staging area patching stub on systems that don't support movw/movt instructions

Reviewed-by: bdelsart
This commit is contained in:
Vladimir Danushevsky 2011-04-20 14:07:57 -04:00
parent 0ab6045255
commit 46259d93ba
1 changed files with 13 additions and 1 deletions
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14
hotspot/src/share/vm/c1/c1_Runtime1.cpp
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@ -1026,9 +1026,21 @@ JRT_ENTRY(void, Runtime1::patch_code(JavaThread* thread, Runtime1::StubID stub_i
// first replace the tail, then the call
#ifdef ARM
if(stub_id == Runtime1::load_klass_patching_id && !VM_Version::supports_movw()) {
nmethod* nm = CodeCache::find_nmethod(instr_pc);
oop* oop_addr = NULL;
assert(nm != NULL, "invalid nmethod_pc");
RelocIterator oops(nm, copy_buff, copy_buff + 1);
while (oops.next()) {
if (oops.type() == relocInfo::oop_type) {
oop_Relocation* r = oops.oop_reloc();
oop_addr = r->oop_addr();
break;
}
}
assert(oop_addr != NULL, "oop relocation must exist");
copy_buff -= *byte_count;
NativeMovConstReg* n_copy2 = nativeMovConstReg_at(copy_buff);
n_copy2->set_data((intx) (load_klass()), instr_pc);
n_copy2->set_pc_relative_offset((address)oop_addr, instr_pc);
}
#endif