62 lines
2.1 KiB
C++
62 lines
2.1 KiB
C++
/*
|
|
* Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
|
|
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
*
|
|
* This code is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 only, as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This code is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* version 2 for more details (a copy is included in the LICENSE file that
|
|
* accompanied this code).
|
|
*
|
|
* You should have received a copy of the GNU General Public License version
|
|
* 2 along with this work; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
* or visit www.oracle.com if you need additional information or have any
|
|
* questions.
|
|
*
|
|
*/
|
|
|
|
#include "precompiled.hpp"
|
|
#include "asm/assembler.hpp"
|
|
#include "asm/assembler.inline.hpp"
|
|
|
|
#include "assembler_sparc.hpp"
|
|
|
|
int AbstractAssembler::code_fill_byte() {
|
|
return 0x00; // illegal instruction 0x00000000
|
|
}
|
|
|
|
#ifdef VALIDATE_PIPELINE
|
|
/* Walk over the current code section and verify that there are no obvious
|
|
* pipeline hazards exposed in the code generated.
|
|
*/
|
|
void Assembler::validate_no_pipeline_hazards() {
|
|
const CodeSection* csect = code_section();
|
|
|
|
address addr0 = csect->start();
|
|
address addrN = csect->end();
|
|
uint32_t prev = 0;
|
|
|
|
assert((addrN - addr0) % BytesPerInstWord == 0, "must be");
|
|
|
|
for (address pc = addr0; pc != addrN; pc += BytesPerInstWord) {
|
|
uint32_t insn = *reinterpret_cast<uint32_t*>(pc);
|
|
|
|
// 1. General case: No CTI immediately after other CTI
|
|
assert(!(is_cti(prev) && is_cti(insn)), "CTI-CTI not allowed.");
|
|
|
|
// 2. Special case: No CTI immediately after/before RDPC
|
|
assert(!(is_cti(prev) && is_rdpc(insn)), "CTI-RDPC not allowed.");
|
|
assert(!(is_rdpc(prev) && is_cti(insn)), "RDPC-CTI not allowed.");
|
|
|
|
prev = insn;
|
|
}
|
|
}
|
|
#endif
|