src/cpu/mips/vm/c1_MacroAssembler_mips.cpp

changeset 1
2d8a650513c2
child 29
6c147e7e4605
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/cpu/mips/vm/c1_MacroAssembler_mips.cpp	Fri Apr 29 00:06:10 2016 +0800
     1.3 @@ -0,0 +1,516 @@
     1.4 +/*
     1.5 + * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
     1.6 + * Copyright (c) 2015, 2016, Loongson Technology. All rights reserved.
     1.7 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     1.8 + *
     1.9 + * This code is free software; you can redistribute it and/or modify it
    1.10 + * under the terms of the GNU General Public License version 2 only, as
    1.11 + * published by the Free Software Foundation.
    1.12 + *
    1.13 + * This code is distributed in the hope that it will be useful, but WITHOUT
    1.14 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    1.15 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    1.16 + * version 2 for more details (a copy is included in the LICENSE file that
    1.17 + * accompanied this code).
    1.18 + *
    1.19 + * You should have received a copy of the GNU General Public License version
    1.20 + * 2 along with this work; if not, write to the Free Software Foundation,
    1.21 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    1.22 + *
    1.23 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    1.24 + * or visit www.oracle.com if you need additional information or have any
    1.25 + * questions.
    1.26 + *
    1.27 + */
    1.28 +
    1.29 +#include "precompiled.hpp"
    1.30 +#include "c1/c1_MacroAssembler.hpp"
    1.31 +#include "c1/c1_Runtime1.hpp"
    1.32 +#include "classfile/systemDictionary.hpp"
    1.33 +#include "gc_interface/collectedHeap.hpp"
    1.34 +#include "interpreter/interpreter.hpp"
    1.35 +#include "oops/arrayOop.hpp"
    1.36 +#include "oops/markOop.hpp"
    1.37 +#include "runtime/basicLock.hpp"
    1.38 +#include "runtime/biasedLocking.hpp"
    1.39 +#include "runtime/os.hpp"
    1.40 +#include "runtime/stubRoutines.hpp"
    1.41 +
    1.42 +int C1_MacroAssembler::lock_object(Register hdr, Register obj, Register disp_hdr,Register scratch, Label& slow_case) {
    1.43 +  const int aligned_mask = BytesPerWord -1;
    1.44 +  const int hdr_offset = oopDesc::mark_offset_in_bytes();
    1.45 +
    1.46 +  // hdr is just a temperary register, it cannot be AT, however
    1.47 +  if ( hdr == NOREG ) {
    1.48 +    hdr = T8;
    1.49 +  }
    1.50 +
    1.51 +  assert_different_registers(hdr, obj, disp_hdr);
    1.52 +  Label done;
    1.53 +  // The following move must be the first instruction of emitted since debug
    1.54 +  // information may be generated for it.
    1.55 +  // Load object header
    1.56 +  int null_check_offset = -1;
    1.57 +  verify_oop(obj);
    1.58 +
    1.59 +  // save object being locked into the BasicObjectLock
    1.60 +  st_ptr(obj, disp_hdr, BasicObjectLock::obj_offset_in_bytes());
    1.61 +  if (UseBiasedLocking) {
    1.62 +    assert(scratch != noreg, "should have scratch register at this point");
    1.63 +    null_check_offset = biased_locking_enter(disp_hdr, obj, hdr, scratch, false, 
    1.64 +	done, &slow_case);
    1.65 +  } else {
    1.66 +    null_check_offset = offset();
    1.67 +  }
    1.68 +
    1.69 +  // Load object header
    1.70 +  ld_ptr(hdr, obj, hdr_offset); 
    1.71 +  // and mark it as unlocked
    1.72 +  ori(hdr, hdr, markOopDesc::unlocked_value);
    1.73 +  // save unlocked object header into the displaced header location on the stack
    1.74 +  sd(hdr, disp_hdr, 0);
    1.75 +
    1.76 +  // test if object header is still the same (i.e. unlocked), and if so, store the
    1.77 +  // displaced header address in the object header - if it is not the same, get the
    1.78 +  // object header instead
    1.79 +  //if (os::is_MP()) MacroAssembler::lock(); // must be immediately before cmpxchg!
    1.80 +  cmpxchg(disp_hdr, Address(obj, hdr_offset), hdr);
    1.81 +  // if the object header was the same, we're done
    1.82 +  if (PrintBiasedLockingStatistics) {
    1.83 +    //cond_incl(Assembler::equal, 
    1.84 +    //Address((int) BiasedLocking::fast_path_entry_count_addr(), relocInfo::none));
    1.85 +    // cond_incl(Assembler::equal, 
    1.86 +    // Address((int) BiasedLocking::fast_path_entry_count_addr(), relocInfo::none));
    1.87 +
    1.88 +  }
    1.89 +
    1.90 +
    1.91 +  bne(AT, R0, done);
    1.92 +  delayed()->nop();
    1.93 +  // if the object header was not the same, it is now in the hdr register
    1.94 +  // => test if it is a stack pointer into the same stack (recursive locking), i.e.:
    1.95 +  //
    1.96 +  // 1) (hdr & aligned_mask) == 0
    1.97 +  // 2) SP <= hdr
    1.98 +  // 3) hdr <= SP + page_size
    1.99 +  //
   1.100 +  // these 3 tests can be done by evaluating the following expression:
   1.101 +  //
   1.102 +  // (hdr - SP) & (aligned_mask - page_size)
   1.103 +  //
   1.104 +  // assuming both the stack pointer and page_size have their least
   1.105 +  // significant 2 bits cleared and page_size is a power of 2
   1.106 +  sub(hdr, hdr, SP);
   1.107 +  move(AT, aligned_mask - os::vm_page_size());
   1.108 +  andr(hdr, hdr, AT);
   1.109 +  // for recursive locking, the result is zero => save it in the displaced header
   1.110 +  // location (NULL in the displaced hdr location indicates recursive locking)
   1.111 +  st_ptr(hdr, disp_hdr, 0);
   1.112 +  // otherwise we don't care about the result and handle locking via runtime call
   1.113 +  bne_far(hdr, R0, slow_case);
   1.114 +  delayed()->nop();
   1.115 +  // done
   1.116 +  bind(done);
   1.117 +  return null_check_offset;
   1.118 +}
   1.119 +
   1.120 +
   1.121 +void C1_MacroAssembler::unlock_object(Register hdr, Register obj, Register disp_hdr, Label& slow_case) {
   1.122 +  const int aligned_mask = BytesPerWord -1;
   1.123 +  const int hdr_offset = oopDesc::mark_offset_in_bytes();
   1.124 +
   1.125 +  // hdr is just a temparay register, however, it cannot be AT
   1.126 +  if ( hdr == NOREG ) {
   1.127 +    hdr = T8;
   1.128 +  }
   1.129 +
   1.130 +  assert_different_registers(hdr, obj, disp_hdr);
   1.131 +  assert(BytesPerWord == 8, "adjust aligned_mask and code");
   1.132 +  Label done;
   1.133 +  if (UseBiasedLocking) {
   1.134 +    // load object
   1.135 +    ld_ptr(obj, Address(disp_hdr, BasicObjectLock::obj_offset_in_bytes()));
   1.136 +    biased_locking_exit(obj, hdr, done);
   1.137 +  }
   1.138 +
   1.139 +
   1.140 +
   1.141 +  // load displaced header
   1.142 +  ld_ptr(hdr, disp_hdr, 0);
   1.143 +  // if the loaded hdr is NULL we had recursive locking
   1.144 +  // if we had recursive locking, we are done
   1.145 +  beq(hdr, R0, done);
   1.146 +  delayed()->nop();
   1.147 +  // load object
   1.148 +  if(!UseBiasedLocking){
   1.149 +    ld_ptr(obj, disp_hdr, BasicObjectLock::obj_offset_in_bytes());
   1.150 +  }
   1.151 +
   1.152 +  verify_oop(obj);
   1.153 +  // test if object header is pointing to the displaced header, and if so, restore
   1.154 +  // the displaced header in the object - if the object header is not pointing to
   1.155 +  // the displaced header, get the object header instead
   1.156 +  //if (os::is_MP()) MacroAssembler::lock(); // must be immediately before cmpxchg!
   1.157 +  cmpxchg(hdr, Address(obj, hdr_offset), disp_hdr);
   1.158 +  // if the object header was not pointing to the displaced header,
   1.159 +  // we do unlocking via runtime call
   1.160 +  beq_far(AT, R0, slow_case);
   1.161 +  delayed()->nop();
   1.162 +  // done
   1.163 +  bind(done);
   1.164 +}
   1.165 +
   1.166 +
   1.167 +
   1.168 +// Defines obj, preserves var_size_in_bytes
   1.169 +void C1_MacroAssembler::try_allocate(Register obj, Register var_size_in_bytes, int con_size_in_bytes, Register t1, Register t2, Label& slow_case) {
   1.170 +  if (UseTLAB) {
   1.171 +    tlab_allocate(obj, var_size_in_bytes, con_size_in_bytes, t1, t2, slow_case);
   1.172 +  } else {
   1.173 +    eden_allocate(obj, var_size_in_bytes, con_size_in_bytes, t1, t2, slow_case);
   1.174 +  }
   1.175 +}
   1.176 +
   1.177 +void C1_MacroAssembler::initialize_header(Register obj, Register klass, Register len, Register t1 , Register t2) {
   1.178 +  assert_different_registers(obj, klass, len, AT);
   1.179 +
   1.180 +  if (UseBiasedLocking && !len->is_valid()) {
   1.181 +    assert_different_registers(obj, klass, len, t1, t2);
   1.182 +    ld_ptr(t1, klass, in_bytes(Klass::prototype_header_offset()));
   1.183 +    st_ptr(t1, obj, oopDesc::mark_offset_in_bytes());
   1.184 +  } else {
   1.185 +    li(AT, (intptr_t)markOopDesc::prototype());
   1.186 +    st_ptr(AT, obj, oopDesc::mark_offset_in_bytes());
   1.187 +  }	
   1.188 +  //st_ptr(klass, obj, oopDesc::klass_offset_in_bytes());
   1.189 +#ifdef _LP64
   1.190 +  if (UseCompressedOops) {
   1.191 +    move(AT, klass);
   1.192 +    store_klass(obj, AT);
   1.193 +  } else
   1.194 +#endif
   1.195 +  {
   1.196 +    st_ptr(klass, obj, oopDesc::klass_offset_in_bytes());
   1.197 +  }
   1.198 +
   1.199 +  if (len->is_valid()) {
   1.200 +    sw(len, obj, arrayOopDesc::length_offset_in_bytes());
   1.201 +  }
   1.202 +#ifdef _LP64
   1.203 +  else if (UseCompressedOops) {
   1.204 +    store_klass_gap(obj, R0);
   1.205 +  }
   1.206 +  
   1.207 +#endif
   1.208 +}
   1.209 +
   1.210 +// preserves obj, destroys len_in_bytes
   1.211 +void C1_MacroAssembler::initialize_body(Register obj, Register len_in_bytes, int hdr_size_in_bytes, Register t1) {
   1.212 +  Label done;
   1.213 +  Register ptr = t1;
   1.214 +  assert_different_registers(obj, ptr, len_in_bytes);
   1.215 +  assert((hdr_size_in_bytes & (BytesPerWord - 1)) == 0, 
   1.216 +      "header size is not a multiple of BytesPerWord");
   1.217 +  Register index = len_in_bytes;
   1.218 +
   1.219 +//tty->print_cr("C1_MacroAssembler::initialize_body LEN=0x%x, hdr_size=0x%x", len_in_bytes, hdr_size_in_bytes);
   1.220 +  assert(is_simm16(hdr_size_in_bytes), "change this code");
   1.221 +  addi(index, index, - hdr_size_in_bytes);
   1.222 +  beq(index, R0, done);
   1.223 +  delayed();
   1.224 +
   1.225 +  // initialize topmost word, divide index by 2, check if odd and test if zero
   1.226 +  // note: for the remaining code to work, index must be a multiple of BytesPerWord
   1.227 +#ifdef ASSERT
   1.228 +  { 
   1.229 +    Label L;
   1.230 +    andi(AT, index, BytesPerWord - 1);
   1.231 +    beq(AT, R0, L);
   1.232 +    delayed()->nop();
   1.233 +    stop("index is not a multiple of BytesPerWord");
   1.234 +    bind(L);
   1.235 +  }
   1.236 +#endif
   1.237 +  // index could have been not a multiple of 8 (i.e., bit 2 was set)
   1.238 +  { 
   1.239 +    Label even;
   1.240 +    // note: if index was a multiple of 8, than it cannot
   1.241 +    //       be 0 now otherwise it must have been 0 before
   1.242 +    //       => if it is even, we don't need to check for 0 again
   1.243 +#ifdef _LP64
   1.244 +    andi(AT, index, 8);
   1.245 +    shr(index, 4);
   1.246 +    shl(index, 4);
   1.247 +#else
   1.248 +    andi(AT, index, 4);
   1.249 +    shr(index, 3);
   1.250 +    shl(index, 3);
   1.251 +#endif
   1.252 +    beq(AT, R0, even);
   1.253 +    delayed()->add(ptr, obj, index);
   1.254 +    // clear topmost word (no jump needed if conditional assignment would work here)
   1.255 +    st_ptr(R0, ptr, hdr_size_in_bytes); 
   1.256 +    // index could be 0 now, need to check again
   1.257 +    beq(index, R0, done);
   1.258 +    delayed()->nop();
   1.259 +    bind(even);
   1.260 +  }
   1.261 +  // initialize remaining object fields: edx is a multiple of 2 now
   1.262 +  { 
   1.263 +    Label loop;
   1.264 +    bind(loop);
   1.265 +    st_ptr(R0, ptr, hdr_size_in_bytes - 1*BytesPerWord);
   1.266 +    st_ptr(R0, ptr, hdr_size_in_bytes - 2*BytesPerWord);
   1.267 +
   1.268 +    addi(index, index, - 2 * wordSize);
   1.269 +    bne(index, R0, loop);
   1.270 +    delayed()->addi(ptr, ptr, - 2 * wordSize);
   1.271 +  }
   1.272 +
   1.273 +  // done
   1.274 +  bind(done);
   1.275 +}
   1.276 +
   1.277 +void C1_MacroAssembler::allocate_object(Register obj, Register t1, Register t2, int header_size, int object_size, Register klass, Label& slow_case) {
   1.278 +  //assert(obj == rax, "obj must be in rax, for cmpxchg");
   1.279 +  assert(obj != t1 && obj != t2 && t1 != t2, "registers must be different"); // XXX really?
   1.280 +  assert(header_size >= 0 && object_size >= header_size, "illegal sizes");
   1.281 +
   1.282 +  try_allocate(obj, noreg, object_size * BytesPerWord, t1, t2, slow_case);
   1.283 +
   1.284 +  initialize_object(obj, klass, noreg, object_size * HeapWordSize, t1, t2);
   1.285 +}
   1.286 +
   1.287 +void C1_MacroAssembler::initialize_object(Register obj, Register klass, Register var_size_in_bytes, int con_size_in_bytes, Register t1, Register t2) {
   1.288 +	assert((con_size_in_bytes & MinObjAlignmentInBytesMask) == 0,
   1.289 +			"con_size_in_bytes is not multiple of alignment");
   1.290 +	//Merged from b25
   1.291 +	const int hdr_size_in_bytes = instanceOopDesc::header_size() * HeapWordSize;
   1.292 +
   1.293 +	//  initialize_header(obj, klass, NOREG);
   1.294 +	initialize_header(obj, klass, NOREG,t1,t2);
   1.295 +
   1.296 +	// clear rest of allocated space
   1.297 +	const Register index = t2;
   1.298 +	//FIXME, x86 changed the value in jdk6 
   1.299 +	// const int threshold = hdr_size_in_bytes + 36;   
   1.300 +	// // approximate break even point for code size (see comments below)
   1.301 +	const int threshold = 6 * BytesPerWord;   
   1.302 +	// approximate break even point for code size (see comments below)
   1.303 +	if (var_size_in_bytes != NOREG) {
   1.304 +		move(index, var_size_in_bytes);
   1.305 +		initialize_body(obj, index, hdr_size_in_bytes, t1);
   1.306 +	} else if (con_size_in_bytes <= threshold) {
   1.307 +		// use explicit null stores
   1.308 +		// code size = 4*n bytes (n = number of fields to clear)
   1.309 +	
   1.310 +		for (int i = hdr_size_in_bytes; i < con_size_in_bytes; i += BytesPerWord) { 
   1.311 +			st_ptr(R0, obj, i);
   1.312 +		}
   1.313 +		
   1.314 +       
   1.315 +
   1.316 +	} else if(con_size_in_bytes > hdr_size_in_bytes) {
   1.317 +		// use loop to null out the fields
   1.318 +		// code size = 32 bytes for even n (n = number of fields to clear)
   1.319 +		// initialize last object field first if odd number of fields
   1.320 +		assert( ((con_size_in_bytes - hdr_size_in_bytes) >> 3)!=0, "change code here");
   1.321 +
   1.322 +#ifdef _LP64
   1.323 +		move(index, (con_size_in_bytes - hdr_size_in_bytes) >> 4);
   1.324 +		sll(t1, index, 4);
   1.325 +#else
   1.326 +		move(index, (con_size_in_bytes - hdr_size_in_bytes) >> 3);
   1.327 +		sll(t1, index, 3);
   1.328 +#endif
   1.329 +		add(t1, obj, t1);
   1.330 +
   1.331 +		// initialize last object field if constant size is odd
   1.332 +#ifdef _LP64
   1.333 +		if (! UseCompressedOops)
   1.334 +		{
   1.335 +		    if (((con_size_in_bytes - hdr_size_in_bytes) & 8) != 0) {
   1.336 +			sd(R0, t1, hdr_size_in_bytes);
   1.337 +		    }
   1.338 +		} else if (UseCompressedOops) {
   1.339 +		    int extra = (con_size_in_bytes - hdr_size_in_bytes) % 16;
   1.340 +		    while (extra != 0) {
   1.341 +			sw(R0, t1, hdr_size_in_bytes + extra - 4);
   1.342 +			extra -= 4;
   1.343 +		    }
   1.344 +		}
   1.345 +#else
   1.346 +		if (((con_size_in_bytes - hdr_size_in_bytes) & 4) != 0) {
   1.347 +			sw(R0, t1, hdr_size_in_bytes);
   1.348 +		}
   1.349 +#endif
   1.350 +		// initialize remaining object fields: edx is a multiple of 2
   1.351 +		{ 
   1.352 +			Label loop;
   1.353 +			bind(loop);
   1.354 +			st_ptr(R0, t1, hdr_size_in_bytes - (1*BytesPerWord));
   1.355 +			st_ptr(R0, t1, hdr_size_in_bytes - (2*BytesPerWord));
   1.356 +			addi(index, index, -1);
   1.357 +			bne(index, R0, loop);
   1.358 +			delayed()->addi(t1, t1, - 2 * wordSize);
   1.359 +		}
   1.360 +	}
   1.361 +
   1.362 +	if (DTraceAllocProbes) {
   1.363 +		//assert(obj == eax, "must be");
   1.364 +		call(CAST_FROM_FN_PTR(address,
   1.365 +	             Runtime1::entry_for(Runtime1::dtrace_object_alloc_id)), relocInfo::runtime_call_type);
   1.366 +		delayed()->nop(); 
   1.367 +	}
   1.368 +	verify_oop(obj);
   1.369 +}
   1.370 +
   1.371 +void C1_MacroAssembler::allocate_array(Register obj, Register len, Register t1, Register t2, Register t3,int header_size, 
   1.372 +					int scale, Register klass, Label& slow_case) {
   1.373 +	assert(obj == V0, "obj must be in V0 for cmpxchg");
   1.374 +	assert_different_registers(obj, len, t1, t2, t3,klass, AT);
   1.375 +
   1.376 +        // determine alignment mask
   1.377 +	assert(BytesPerWord == 8, "must be a multiple of 2 for masking code to work");
   1.378 +
   1.379 +         // check for negative or excessive length
   1.380 +         //const int max_length = 0x00FFFFFF;
   1.381 +         //      move(AT, max_length);
   1.382 +        move(AT, max_array_allocation_length);
   1.383 +	sltu(AT, AT, len);
   1.384 +	bne_far(AT, R0, slow_case);
   1.385 +	delayed()->nop();
   1.386 +
   1.387 +	const Register arr_size = t3;
   1.388 +	// align object end
   1.389 +	move(arr_size, header_size * BytesPerWord + MinObjAlignmentInBytesMask);
   1.390 +	sll(AT, len, scale);
   1.391 +	add(arr_size, arr_size, AT);
   1.392 +	move(AT, ~MinObjAlignmentInBytesMask);
   1.393 +	andr(arr_size, arr_size, AT);
   1.394 +
   1.395 +	try_allocate(obj, arr_size, 0, t1, t2, slow_case);
   1.396 +
   1.397 +	initialize_header(obj, klass, len,t1,t2);
   1.398 +
   1.399 +         // clear rest of allocated space
   1.400 +	const Register len_zero = len;
   1.401 +	initialize_body(obj, arr_size, header_size * BytesPerWord, len_zero);
   1.402 +	if (DTraceAllocProbes) {
   1.403 +		// assert(obj == eax, "must be");
   1.404 +		call(CAST_FROM_FN_PTR(address,
   1.405 +		Runtime1::entry_for(Runtime1::dtrace_object_alloc_id)),
   1.406 +					relocInfo::runtime_call_type);
   1.407 +		delayed()->nop();
   1.408 +	}
   1.409 +
   1.410 +	verify_oop(obj);
   1.411 +}
   1.412 +
   1.413 +
   1.414 +void C1_MacroAssembler::inline_cache_check(Register receiver, Register iCache) {
   1.415 +	verify_oop(receiver);
   1.416 +	// explicit NULL check not needed since load from [klass_offset] causes a trap  
   1.417 +	// check against inline cache
   1.418 +	assert(!MacroAssembler::needs_explicit_null_check(oopDesc::klass_offset_in_bytes()), "must add explicit null check");
   1.419 +	///cmpl(iCache, Address(receiver, oopDesc::klass_offset_in_bytes())); 
   1.420 +	// if icache check fails, then jump to runtime routine
   1.421 +	// Note: RECEIVER must still contain the receiver!
   1.422 +	Label L;
   1.423 +#ifdef _LP64
   1.424 +	//ld_ptr(AT, receiver, oopDesc::klass_offset_in_bytes());
   1.425 +	//add for compressedoops
   1.426 +	load_klass(AT, receiver);
   1.427 +#else
   1.428 +	lw(AT, receiver, oopDesc::klass_offset_in_bytes());
   1.429 +#endif
   1.430 +	beq(AT, iCache, L);
   1.431 +	delayed()->nop();
   1.432 +	//	jmp(Runtime1::entry_for(Runtime1::handle_ic_miss_id), relocInfo::runtime_call_type);
   1.433 +        jmp(SharedRuntime::get_ic_miss_stub(), relocInfo::runtime_call_type);
   1.434 +	delayed()->nop();
   1.435 +	bind(L);
   1.436 +	// assert(UseCompressedOops, "check alignment in emit_method_entry");
   1.437 +}
   1.438 +/*
   1.439 +void C1_MacroAssembler::method_exit(bool restore_frame) {
   1.440 +	if (restore_frame) {
   1.441 +		leave();
   1.442 +	} 
   1.443 +	jr(RA);
   1.444 +	delayed()->nop();
   1.445 +}*/
   1.446 +
   1.447 +
   1.448 +void C1_MacroAssembler::build_frame(int frame_size_in_bytes, int bang_size_in_bytes) {
   1.449 +  // Make sure there is enough stack space for this method's activation.
   1.450 +  // Note that we do this before doing an enter(). This matches the
   1.451 +  // ordering of C2's stack overflow check / esp decrement and allows
   1.452 +  // the SharedRuntime stack overflow handling to be consistent
   1.453 +  // between the two compilers.
   1.454 +  	generate_stack_overflow_check(frame_size_in_bytes);
   1.455 +
   1.456 +	enter();
   1.457 +//FIXME
   1.458 +#ifdef TIERED
   1.459 +    // c2 leaves fpu stack dirty. Clean it on entry
   1.460 + //  if (UseSSE < 2 ) {
   1.461 +       empty_FPU_stack();
   1.462 +  //  }
   1.463 +#endif // TIERED
   1.464 +  
   1.465 +  decrement(SP, frame_size_in_bytes); // does not emit code for frame_size == 0
   1.466 +}
   1.467 +
   1.468 +void C1_MacroAssembler::unverified_entry(Register receiver, Register ic_klass) {
   1.469 +  if (C1Breakpoint) int3();
   1.470 +  inline_cache_check(receiver, ic_klass);
   1.471 +}
   1.472 +
   1.473 +
   1.474 +void C1_MacroAssembler::verified_entry() {
   1.475 +  if (C1Breakpoint)int3();
   1.476 +  // build frame
   1.477 +  verify_FPU(0, "method_entry");
   1.478 +}
   1.479 +
   1.480 +
   1.481 +#ifndef PRODUCT
   1.482 +void C1_MacroAssembler::verify_stack_oop(int stack_offset) {
   1.483 +	if (!VerifyOops) return;
   1.484 +	//  verify_oop_addr(Address(esp, stack_offset));
   1.485 +	verify_oop_addr(Address(SP, stack_offset));
   1.486 +}
   1.487 +
   1.488 +void C1_MacroAssembler::verify_not_null_oop(Register r) {
   1.489 +	if (!VerifyOops) return;
   1.490 +	Label not_null;
   1.491 +	// testl(r, r);
   1.492 +	//jcc(Assembler::notZero, not_null);
   1.493 +	bne(r,R0,not_null); 
   1.494 +	delayed()->nop();  
   1.495 +	stop("non-null oop required");
   1.496 +	bind(not_null);
   1.497 +	verify_oop(r);
   1.498 +}
   1.499 +
   1.500 +void C1_MacroAssembler::invalidate_registers(bool inv_v0, bool inv_v1, bool inv_t3, bool inv_t7, bool inv_s0, bool inv_s7) {
   1.501 +#ifdef ASSERT
   1.502 +	/*  if (inv_eax) movl(eax, 0xDEAD);
   1.503 +	    if (inv_ebx) movl(ebx, 0xDEAD);
   1.504 +	    if (inv_ecx) movl(ecx, 0xDEAD);
   1.505 +	    if (inv_edx) movl(edx, 0xDEAD);
   1.506 +	    if (inv_esi) movl(esi, 0xDEAD);
   1.507 +	    if (inv_edi) movl(edi, 0xDEAD);
   1.508 +	    */
   1.509 +	//if (inv_v0) move(V0, 0xDEAD);
   1.510 +	//if (inv_v1) move(V1, 0xDEAD);
   1.511 +	//if (inv_t3) move(T3, 0xDEAD);
   1.512 +	//if (inv_t7) move(T7, 0xDEAD);
   1.513 +	//if (inv_s0) move(S0, 0xDEAD);
   1.514 +	//if (inv_s7) move(S7, 0xDEAD);
   1.515 +#endif
   1.516 +}
   1.517 +#endif // ifndef PRODUCT
   1.518 +
   1.519 +

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