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annotate src/cpu/sparc/vm/nativeInst_sparc.hpp @ 196:d1605aabd0a1 jdk7-b30
6719955: Update copyright year
Summary: Update copyright year for files that have been modified in 2008
Reviewed-by: ohair, tbell
| author | xdono |
|---|---|
| date | Wed, 02 Jul 2008 12:55:16 -0700 |
| parents | 018d5b58dd4f |
| children | 98cb887364d3 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 196 | 2 * Copyright 1997-2008 Sun Microsystems, Inc. All Rights Reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 // We have interface for the following instructions: | |
| 26 // - NativeInstruction | |
| 27 // - - NativeCall | |
| 28 // - - NativeFarCall | |
| 29 // - - NativeMovConstReg | |
| 30 // - - NativeMovConstRegPatching | |
| 31 // - - NativeMovRegMem | |
| 32 // - - NativeMovRegMemPatching | |
| 33 // - - NativeJump | |
| 34 // - - NativeGeneralJump | |
| 35 // - - NativeIllegalInstruction | |
| 36 // The base class for different kinds of native instruction abstractions. | |
| 37 // Provides the primitive operations to manipulate code relative to this. | |
| 38 class NativeInstruction VALUE_OBJ_CLASS_SPEC { | |
| 39 friend class Relocation; | |
| 40 | |
| 41 public: | |
| 42 enum Sparc_specific_constants { | |
| 43 nop_instruction_size = 4 | |
| 44 }; | |
| 45 | |
|
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6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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46 bool is_dtrace_trap(); |
| 0 | 47 bool is_nop() { return long_at(0) == nop_instruction(); } |
| 48 bool is_call() { return is_op(long_at(0), Assembler::call_op); } | |
| 49 bool is_sethi() { return (is_op2(long_at(0), Assembler::sethi_op2) | |
| 50 && inv_rd(long_at(0)) != G0); } | |
| 51 | |
| 52 bool sets_cc() { | |
| 53 // conservative (returns true for some instructions that do not set the | |
| 54 // the condition code, such as, "save". | |
| 55 // Does not return true for the deprecated tagged instructions, such as, TADDcc | |
| 56 int x = long_at(0); | |
| 57 return (is_op(x, Assembler::arith_op) && | |
| 58 (inv_op3(x) & Assembler::cc_bit_op3) == Assembler::cc_bit_op3); | |
| 59 } | |
| 60 bool is_illegal(); | |
| 61 bool is_zombie() { | |
| 62 int x = long_at(0); | |
| 63 return is_op3(x, | |
| 64 VM_Version::v9_instructions_work() ? | |
| 65 Assembler::ldsw_op3 : Assembler::lduw_op3, | |
| 66 Assembler::ldst_op) | |
| 67 && Assembler::inv_rs1(x) == G0 | |
| 68 && Assembler::inv_rd(x) == O7; | |
| 69 } | |
| 70 bool is_ic_miss_trap(); // Inline-cache uses a trap to detect a miss | |
| 71 bool is_return() { | |
| 72 // is it the output of MacroAssembler::ret or MacroAssembler::retl? | |
| 73 int x = long_at(0); | |
| 74 const int pc_return_offset = 8; // see frame_sparc.hpp | |
| 75 return is_op3(x, Assembler::jmpl_op3, Assembler::arith_op) | |
| 76 && (inv_rs1(x) == I7 || inv_rs1(x) == O7) | |
| 77 && inv_immed(x) && inv_simm(x, 13) == pc_return_offset | |
| 78 && inv_rd(x) == G0; | |
| 79 } | |
| 80 bool is_int_jump() { | |
| 81 // is it the output of MacroAssembler::b? | |
| 82 int x = long_at(0); | |
| 83 return is_op2(x, Assembler::bp_op2) || is_op2(x, Assembler::br_op2); | |
| 84 } | |
| 85 bool is_float_jump() { | |
| 86 // is it the output of MacroAssembler::fb? | |
| 87 int x = long_at(0); | |
| 88 return is_op2(x, Assembler::fbp_op2) || is_op2(x, Assembler::fb_op2); | |
| 89 } | |
| 90 bool is_jump() { | |
| 91 return is_int_jump() || is_float_jump(); | |
| 92 } | |
| 93 bool is_cond_jump() { | |
| 94 int x = long_at(0); | |
| 95 return (is_int_jump() && Assembler::inv_cond(x) != Assembler::always) || | |
| 96 (is_float_jump() && Assembler::inv_cond(x) != Assembler::f_always); | |
| 97 } | |
| 98 | |
| 99 bool is_stack_bang() { | |
| 100 int x = long_at(0); | |
| 101 return is_op3(x, Assembler::stw_op3, Assembler::ldst_op) && | |
| 102 (inv_rd(x) == G0) && (inv_rs1(x) == SP) && (inv_rs2(x) == G3_scratch); | |
| 103 } | |
| 104 | |
| 105 bool is_prefetch() { | |
| 106 int x = long_at(0); | |
| 107 return is_op3(x, Assembler::prefetch_op3, Assembler::ldst_op); | |
| 108 } | |
| 109 | |
| 110 bool is_membar() { | |
| 111 int x = long_at(0); | |
| 112 return is_op3(x, Assembler::membar_op3, Assembler::arith_op) && | |
| 113 (inv_rd(x) == G0) && (inv_rs1(x) == O7); | |
| 114 } | |
| 115 | |
| 116 bool is_safepoint_poll() { | |
| 117 int x = long_at(0); | |
| 118 #ifdef _LP64 | |
| 119 return is_op3(x, Assembler::ldx_op3, Assembler::ldst_op) && | |
| 120 #else | |
| 121 return is_op3(x, Assembler::lduw_op3, Assembler::ldst_op) && | |
| 122 #endif | |
| 123 (inv_rd(x) == G0) && (inv_immed(x) ? Assembler::inv_simm13(x) == 0 : inv_rs2(x) == G0); | |
| 124 } | |
| 125 | |
| 126 bool is_zero_test(Register ®); | |
| 127 bool is_load_store_with_small_offset(Register reg); | |
| 128 | |
| 129 public: | |
| 130 #ifdef ASSERT | |
| 131 static int rdpc_instruction() { return Assembler::op(Assembler::arith_op ) | Assembler::op3(Assembler::rdreg_op3) | Assembler::u_field(5, 18, 14) | Assembler::rd(O7); } | |
| 132 #else | |
| 133 // Temporary fix: in optimized mode, u_field is a macro for efficiency reasons (see Assembler::u_field) - needs to be fixed | |
| 134 static int rdpc_instruction() { return Assembler::op(Assembler::arith_op ) | Assembler::op3(Assembler::rdreg_op3) | u_field(5, 18, 14) | Assembler::rd(O7); } | |
| 135 #endif | |
| 136 static int nop_instruction() { return Assembler::op(Assembler::branch_op) | Assembler::op2(Assembler::sethi_op2); } | |
| 137 static int illegal_instruction(); // the output of __ breakpoint_trap() | |
| 138 static int call_instruction(address destination, address pc) { return Assembler::op(Assembler::call_op) | Assembler::wdisp((intptr_t)destination, (intptr_t)pc, 30); } | |
| 139 | |
| 140 static int branch_instruction(Assembler::op2s op2val, Assembler::Condition c, bool a) { | |
| 141 return Assembler::op(Assembler::branch_op) | Assembler::op2(op2val) | Assembler::annul(a) | Assembler::cond(c); | |
| 142 } | |
| 143 | |
| 144 static int op3_instruction(Assembler::ops opval, Register rd, Assembler::op3s op3val, Register rs1, int simm13a) { | |
| 145 return Assembler::op(opval) | Assembler::rd(rd) | Assembler::op3(op3val) | Assembler::rs1(rs1) | Assembler::immed(true) | Assembler::simm(simm13a, 13); | |
| 146 } | |
| 147 | |
| 148 static int sethi_instruction(Register rd, int imm22a) { | |
| 149 return Assembler::op(Assembler::branch_op) | Assembler::rd(rd) | Assembler::op2(Assembler::sethi_op2) | Assembler::hi22(imm22a); | |
| 150 } | |
| 151 | |
| 152 protected: | |
| 153 address addr_at(int offset) const { return address(this) + offset; } | |
| 154 int long_at(int offset) const { return *(int*)addr_at(offset); } | |
| 155 void set_long_at(int offset, int i); /* deals with I-cache */ | |
| 156 void set_jlong_at(int offset, jlong i); /* deals with I-cache */ | |
| 157 void set_addr_at(int offset, address x); /* deals with I-cache */ | |
| 158 | |
| 159 address instruction_address() const { return addr_at(0); } | |
| 160 address next_instruction_address() const { return addr_at(BytesPerInstWord); } | |
| 161 | |
| 162 static bool is_op( int x, Assembler::ops opval) { | |
| 163 return Assembler::inv_op(x) == opval; | |
| 164 } | |
| 165 static bool is_op2(int x, Assembler::op2s op2val) { | |
| 166 return Assembler::inv_op(x) == Assembler::branch_op && Assembler::inv_op2(x) == op2val; | |
| 167 } | |
| 168 static bool is_op3(int x, Assembler::op3s op3val, Assembler::ops opval) { | |
| 169 return Assembler::inv_op(x) == opval && Assembler::inv_op3(x) == op3val; | |
| 170 } | |
| 171 | |
| 172 // utilities to help subclasses decode: | |
| 173 static Register inv_rd( int x ) { return Assembler::inv_rd( x); } | |
| 174 static Register inv_rs1( int x ) { return Assembler::inv_rs1(x); } | |
| 175 static Register inv_rs2( int x ) { return Assembler::inv_rs2(x); } | |
| 176 | |
| 177 static bool inv_immed( int x ) { return Assembler::inv_immed(x); } | |
| 178 static bool inv_annul( int x ) { return (Assembler::annul(true) & x) != 0; } | |
| 179 static int inv_cond( int x ) { return Assembler::inv_cond(x); } | |
| 180 | |
| 181 static int inv_op( int x ) { return Assembler::inv_op( x); } | |
| 182 static int inv_op2( int x ) { return Assembler::inv_op2(x); } | |
| 183 static int inv_op3( int x ) { return Assembler::inv_op3(x); } | |
| 184 | |
| 185 static int inv_simm( int x, int nbits ) { return Assembler::inv_simm(x, nbits); } | |
| 186 static intptr_t inv_wdisp( int x, int nbits ) { return Assembler::inv_wdisp( x, 0, nbits); } | |
| 187 static intptr_t inv_wdisp16( int x ) { return Assembler::inv_wdisp16(x, 0); } | |
| 188 static int branch_destination_offset(int x) { return Assembler::branch_destination(x, 0); } | |
| 189 static int patch_branch_destination_offset(int dest_offset, int x) { | |
| 190 return Assembler::patched_branch(dest_offset, x, 0); | |
| 191 } | |
| 192 void set_annul_bit() { set_long_at(0, long_at(0) | Assembler::annul(true)); } | |
| 193 | |
| 194 // utility for checking if x is either of 2 small constants | |
| 195 static bool is_either(int x, int k1, int k2) { | |
| 196 // return x == k1 || x == k2; | |
| 197 return (1 << x) & (1 << k1 | 1 << k2); | |
| 198 } | |
| 199 | |
| 200 // utility for checking overflow of signed instruction fields | |
| 201 static bool fits_in_simm(int x, int nbits) { | |
| 202 // cf. Assembler::assert_signed_range() | |
| 203 // return -(1 << nbits-1) <= x && x < ( 1 << nbits-1), | |
| 204 return (unsigned)(x + (1 << nbits-1)) < (unsigned)(1 << nbits); | |
| 205 } | |
| 206 | |
| 207 // set a signed immediate field | |
| 208 static int set_simm(int insn, int imm, int nbits) { | |
| 209 return (insn &~ Assembler::simm(-1, nbits)) | Assembler::simm(imm, nbits); | |
| 210 } | |
| 211 | |
| 212 // set a wdisp field (disp should be the difference of two addresses) | |
| 213 static int set_wdisp(int insn, intptr_t disp, int nbits) { | |
| 214 return (insn &~ Assembler::wdisp((intptr_t)-4, (intptr_t)0, nbits)) | Assembler::wdisp(disp, 0, nbits); | |
| 215 } | |
| 216 | |
| 217 static int set_wdisp16(int insn, intptr_t disp) { | |
| 218 return (insn &~ Assembler::wdisp16((intptr_t)-4, 0)) | Assembler::wdisp16(disp, 0); | |
| 219 } | |
| 220 | |
| 221 // get a simm13 field from an arithmetic or memory instruction | |
| 222 static int get_simm13(int insn) { | |
| 223 assert(is_either(Assembler::inv_op(insn), | |
| 224 Assembler::arith_op, Assembler::ldst_op) && | |
| 225 (insn & Assembler::immed(true)), "must have a simm13 field"); | |
| 226 return Assembler::inv_simm(insn, 13); | |
| 227 } | |
| 228 | |
| 229 // set the simm13 field of an arithmetic or memory instruction | |
| 230 static bool set_simm13(int insn, int imm) { | |
| 231 get_simm13(insn); // tickle the assertion check | |
| 232 return set_simm(insn, imm, 13); | |
| 233 } | |
| 234 | |
| 235 // combine the fields of a sethi stream (7 instructions ) and an add, jmp or ld/st | |
| 236 static intptr_t data64( address pc, int arith_insn ) { | |
| 237 assert(is_op2(*(unsigned int *)pc, Assembler::sethi_op2), "must be sethi"); | |
| 238 intptr_t hi = (intptr_t)gethi( (unsigned int *)pc ); | |
| 239 intptr_t lo = (intptr_t)get_simm13(arith_insn); | |
| 240 assert((unsigned)lo < (1 << 10), "offset field of set_oop must be 10 bits"); | |
| 241 return hi | lo; | |
| 242 } | |
| 243 | |
| 244 // Regenerate the instruction sequence that performs the 64 bit | |
| 245 // sethi. This only does the sethi. The disp field (bottom 10 bits) | |
| 246 // must be handled seperately. | |
| 247 static void set_data64_sethi(address instaddr, intptr_t x); | |
| 248 | |
| 249 // combine the fields of a sethi/simm13 pair (simm13 = or, add, jmpl, ld/st) | |
| 250 static int data32(int sethi_insn, int arith_insn) { | |
| 251 assert(is_op2(sethi_insn, Assembler::sethi_op2), "must be sethi"); | |
| 252 int hi = Assembler::inv_hi22(sethi_insn); | |
| 253 int lo = get_simm13(arith_insn); | |
| 254 assert((unsigned)lo < (1 << 10), "offset field of set_oop must be 10 bits"); | |
| 255 return hi | lo; | |
| 256 } | |
| 257 | |
| 258 static int set_data32_sethi(int sethi_insn, int imm) { | |
| 259 // note that Assembler::hi22 clips the low 10 bits for us | |
| 260 assert(is_op2(sethi_insn, Assembler::sethi_op2), "must be sethi"); | |
| 261 return (sethi_insn &~ Assembler::hi22(-1)) | Assembler::hi22(imm); | |
| 262 } | |
| 263 | |
| 264 static int set_data32_simm13(int arith_insn, int imm) { | |
| 265 get_simm13(arith_insn); // tickle the assertion check | |
| 266 int imm10 = Assembler::low10(imm); | |
| 267 return (arith_insn &~ Assembler::simm(-1, 13)) | Assembler::simm(imm10, 13); | |
| 268 } | |
| 269 | |
| 270 static int low10(int imm) { | |
| 271 return Assembler::low10(imm); | |
| 272 } | |
| 273 | |
| 274 // Perform the inverse of the LP64 Macroassembler::sethi | |
| 275 // routine. Extracts the 54 bits of address from the instruction | |
| 276 // stream. This routine must agree with the sethi routine in | |
| 277 // assembler_inline_sparc.hpp | |
| 278 static address gethi( unsigned int *pc ) { | |
| 279 int i = 0; | |
| 280 uintptr_t adr; | |
| 281 // We first start out with the real sethi instruction | |
| 282 assert(is_op2(*pc, Assembler::sethi_op2), "in gethi - must be sethi"); | |
| 283 adr = (unsigned int)Assembler::inv_hi22( *(pc++) ); | |
| 284 i++; | |
| 285 while ( i < 7 ) { | |
| 286 // We're done if we hit a nop | |
| 287 if ( (int)*pc == nop_instruction() ) break; | |
| 288 assert ( Assembler::inv_op(*pc) == Assembler::arith_op, "in gethi - must be arith_op" ); | |
| 289 switch ( Assembler::inv_op3(*pc) ) { | |
| 290 case Assembler::xor_op3: | |
| 291 adr ^= (intptr_t)get_simm13( *pc ); | |
| 292 return ( (address)adr ); | |
| 293 break; | |
| 294 case Assembler::sll_op3: | |
| 295 adr <<= ( *pc & 0x3f ); | |
| 296 break; | |
| 297 case Assembler::or_op3: | |
| 298 adr |= (intptr_t)get_simm13( *pc ); | |
| 299 break; | |
| 300 default: | |
| 301 assert ( 0, "in gethi - Should not reach here" ); | |
| 302 break; | |
| 303 } | |
| 304 pc++; | |
| 305 i++; | |
| 306 } | |
| 307 return ( (address)adr ); | |
| 308 } | |
| 309 | |
| 310 public: | |
| 311 void verify(); | |
| 312 void print(); | |
| 313 | |
| 314 // unit test stuff | |
| 315 static void test() {} // override for testing | |
| 316 | |
| 317 inline friend NativeInstruction* nativeInstruction_at(address address); | |
| 318 }; | |
| 319 | |
| 320 inline NativeInstruction* nativeInstruction_at(address address) { | |
| 321 NativeInstruction* inst = (NativeInstruction*)address; | |
| 322 #ifdef ASSERT | |
| 323 inst->verify(); | |
| 324 #endif | |
| 325 return inst; | |
| 326 } | |
| 327 | |
| 328 | |
| 329 | |
| 330 //----------------------------------------------------------------------------- | |
| 331 | |
| 332 // The NativeCall is an abstraction for accessing/manipulating native call imm32 instructions. | |
| 333 // (used to manipulate inline caches, primitive & dll calls, etc.) | |
| 334 inline NativeCall* nativeCall_at(address instr); | |
| 335 inline NativeCall* nativeCall_overwriting_at(address instr, | |
| 336 address destination); | |
| 337 inline NativeCall* nativeCall_before(address return_address); | |
| 338 class NativeCall: public NativeInstruction { | |
| 339 public: | |
| 340 enum Sparc_specific_constants { | |
| 341 instruction_size = 8, | |
| 342 return_address_offset = 8, | |
| 343 call_displacement_width = 30, | |
| 344 displacement_offset = 0, | |
| 345 instruction_offset = 0 | |
| 346 }; | |
| 347 address instruction_address() const { return addr_at(0); } | |
| 348 address next_instruction_address() const { return addr_at(instruction_size); } | |
| 349 address return_address() const { return addr_at(return_address_offset); } | |
| 350 | |
| 351 address destination() const { return inv_wdisp(long_at(0), call_displacement_width) + instruction_address(); } | |
| 352 address displacement_address() const { return addr_at(displacement_offset); } | |
| 353 void set_destination(address dest) { set_long_at(0, set_wdisp(long_at(0), dest - instruction_address(), call_displacement_width)); } | |
| 354 void set_destination_mt_safe(address dest); | |
| 355 | |
| 356 void verify_alignment() {} // do nothing on sparc | |
| 357 void verify(); | |
| 358 void print(); | |
| 359 | |
| 360 // unit test stuff | |
| 361 static void test(); | |
| 362 | |
| 363 // Creation | |
| 364 friend inline NativeCall* nativeCall_at(address instr); | |
| 365 friend NativeCall* nativeCall_overwriting_at(address instr, address destination = NULL) { | |
| 366 // insert a "blank" call: | |
| 367 NativeCall* call = (NativeCall*)instr; | |
| 368 call->set_long_at(0 * BytesPerInstWord, call_instruction(destination, instr)); | |
| 369 call->set_long_at(1 * BytesPerInstWord, nop_instruction()); | |
| 370 assert(call->addr_at(2 * BytesPerInstWord) - instr == instruction_size, "instruction size"); | |
| 371 // check its structure now: | |
| 372 assert(nativeCall_at(instr)->destination() == destination, "correct call destination"); | |
| 373 return call; | |
| 374 } | |
| 375 | |
| 376 friend inline NativeCall* nativeCall_before(address return_address) { | |
| 377 NativeCall* call = (NativeCall*)(return_address - return_address_offset); | |
| 378 #ifdef ASSERT | |
| 379 call->verify(); | |
| 380 #endif | |
| 381 return call; | |
| 382 } | |
| 383 | |
| 384 static bool is_call_at(address instr) { | |
| 385 return nativeInstruction_at(instr)->is_call(); | |
| 386 } | |
| 387 | |
| 388 static bool is_call_before(address instr) { | |
| 389 return nativeInstruction_at(instr - return_address_offset)->is_call(); | |
| 390 } | |
| 391 | |
| 392 static bool is_call_to(address instr, address target) { | |
| 393 return nativeInstruction_at(instr)->is_call() && | |
| 394 nativeCall_at(instr)->destination() == target; | |
| 395 } | |
| 396 | |
| 397 // MT-safe patching of a call instruction. | |
| 398 static void insert(address code_pos, address entry) { | |
| 399 (void)nativeCall_overwriting_at(code_pos, entry); | |
| 400 } | |
| 401 | |
| 402 static void replace_mt_safe(address instr_addr, address code_buffer); | |
| 403 }; | |
| 404 inline NativeCall* nativeCall_at(address instr) { | |
| 405 NativeCall* call = (NativeCall*)instr; | |
| 406 #ifdef ASSERT | |
| 407 call->verify(); | |
| 408 #endif | |
| 409 return call; | |
| 410 } | |
| 411 | |
| 412 // The NativeFarCall is an abstraction for accessing/manipulating native call-anywhere | |
| 413 // instructions in the sparcv9 vm. Used to call native methods which may be loaded | |
| 414 // anywhere in the address space, possibly out of reach of a call instruction. | |
| 415 | |
| 416 #ifndef _LP64 | |
| 417 | |
| 418 // On 32-bit systems, a far call is the same as a near one. | |
| 419 class NativeFarCall; | |
| 420 inline NativeFarCall* nativeFarCall_at(address instr); | |
| 421 class NativeFarCall : public NativeCall { | |
| 422 public: | |
| 423 friend inline NativeFarCall* nativeFarCall_at(address instr) { return (NativeFarCall*)nativeCall_at(instr); } | |
| 424 friend NativeFarCall* nativeFarCall_overwriting_at(address instr, address destination = NULL) | |
| 425 { return (NativeFarCall*)nativeCall_overwriting_at(instr, destination); } | |
| 426 friend NativeFarCall* nativeFarCall_before(address return_address) | |
| 427 { return (NativeFarCall*)nativeCall_before(return_address); } | |
| 428 }; | |
| 429 | |
| 430 #else | |
| 431 | |
| 432 // The format of this extended-range call is: | |
| 433 // jumpl_to addr, lreg | |
| 434 // == sethi %hi54(addr), O7 ; jumpl O7, %lo10(addr), O7 ; <delay> | |
| 435 // That is, it is essentially the same as a NativeJump. | |
| 436 class NativeFarCall; | |
| 437 inline NativeFarCall* nativeFarCall_overwriting_at(address instr, address destination); | |
| 438 inline NativeFarCall* nativeFarCall_at(address instr); | |
| 439 class NativeFarCall: public NativeInstruction { | |
| 440 public: | |
| 441 enum Sparc_specific_constants { | |
| 442 // instruction_size includes the delay slot instruction. | |
| 443 instruction_size = 9 * BytesPerInstWord, | |
| 444 return_address_offset = 9 * BytesPerInstWord, | |
| 445 jmpl_offset = 7 * BytesPerInstWord, | |
| 446 displacement_offset = 0, | |
| 447 instruction_offset = 0 | |
| 448 }; | |
| 449 address instruction_address() const { return addr_at(0); } | |
| 450 address next_instruction_address() const { return addr_at(instruction_size); } | |
| 451 address return_address() const { return addr_at(return_address_offset); } | |
| 452 | |
| 453 address destination() const { | |
| 454 return (address) data64(addr_at(0), long_at(jmpl_offset)); | |
| 455 } | |
| 456 address displacement_address() const { return addr_at(displacement_offset); } | |
| 457 void set_destination(address dest); | |
| 458 | |
| 459 bool destination_is_compiled_verified_entry_point(); | |
| 460 | |
| 461 void verify(); | |
| 462 void print(); | |
| 463 | |
| 464 // unit test stuff | |
| 465 static void test(); | |
| 466 | |
| 467 // Creation | |
| 468 friend inline NativeFarCall* nativeFarCall_at(address instr) { | |
| 469 NativeFarCall* call = (NativeFarCall*)instr; | |
| 470 #ifdef ASSERT | |
| 471 call->verify(); | |
| 472 #endif | |
| 473 return call; | |
| 474 } | |
| 475 | |
| 476 friend inline NativeFarCall* nativeFarCall_overwriting_at(address instr, address destination = NULL) { | |
| 477 Unimplemented(); | |
| 478 NativeFarCall* call = (NativeFarCall*)instr; | |
| 479 return call; | |
| 480 } | |
| 481 | |
| 482 friend NativeFarCall* nativeFarCall_before(address return_address) { | |
| 483 NativeFarCall* call = (NativeFarCall*)(return_address - return_address_offset); | |
| 484 #ifdef ASSERT | |
| 485 call->verify(); | |
| 486 #endif | |
| 487 return call; | |
| 488 } | |
| 489 | |
| 490 static bool is_call_at(address instr); | |
| 491 | |
| 492 // MT-safe patching of a call instruction. | |
| 493 static void insert(address code_pos, address entry) { | |
| 494 (void)nativeFarCall_overwriting_at(code_pos, entry); | |
| 495 } | |
| 496 static void replace_mt_safe(address instr_addr, address code_buffer); | |
| 497 }; | |
| 498 | |
| 499 #endif // _LP64 | |
| 500 | |
| 501 // An interface for accessing/manipulating native set_oop imm, reg instructions. | |
| 502 // (used to manipulate inlined data references, etc.) | |
| 503 // set_oop imm, reg | |
| 504 // == sethi %hi22(imm), reg ; add reg, %lo10(imm), reg | |
| 505 class NativeMovConstReg; | |
| 506 inline NativeMovConstReg* nativeMovConstReg_at(address address); | |
| 507 class NativeMovConstReg: public NativeInstruction { | |
| 508 public: | |
| 509 enum Sparc_specific_constants { | |
| 510 sethi_offset = 0, | |
| 511 #ifdef _LP64 | |
| 512 add_offset = 7 * BytesPerInstWord, | |
| 513 instruction_size = 8 * BytesPerInstWord | |
| 514 #else | |
| 515 add_offset = 4, | |
| 516 instruction_size = 8 | |
| 517 #endif | |
| 518 }; | |
| 519 | |
| 520 address instruction_address() const { return addr_at(0); } | |
| 521 address next_instruction_address() const { return addr_at(instruction_size); } | |
| 522 | |
| 523 // (The [set_]data accessor respects oop_type relocs also.) | |
| 524 intptr_t data() const; | |
| 525 void set_data(intptr_t x); | |
| 526 | |
| 527 // report the destination register | |
| 528 Register destination() { return inv_rd(long_at(sethi_offset)); } | |
| 529 | |
| 530 void verify(); | |
| 531 void print(); | |
| 532 | |
| 533 // unit test stuff | |
| 534 static void test(); | |
| 535 | |
| 536 // Creation | |
| 537 friend inline NativeMovConstReg* nativeMovConstReg_at(address address) { | |
| 538 NativeMovConstReg* test = (NativeMovConstReg*)address; | |
| 539 #ifdef ASSERT | |
| 540 test->verify(); | |
| 541 #endif | |
| 542 return test; | |
| 543 } | |
| 544 | |
| 545 | |
| 546 friend NativeMovConstReg* nativeMovConstReg_before(address address) { | |
| 547 NativeMovConstReg* test = (NativeMovConstReg*)(address - instruction_size); | |
| 548 #ifdef ASSERT | |
| 549 test->verify(); | |
| 550 #endif | |
| 551 return test; | |
| 552 } | |
| 553 | |
| 554 }; | |
| 555 | |
| 556 | |
| 557 // An interface for accessing/manipulating native set_oop imm, reg instructions. | |
| 558 // (used to manipulate inlined data references, etc.) | |
| 559 // set_oop imm, reg | |
| 560 // == sethi %hi22(imm), reg; nop; add reg, %lo10(imm), reg | |
| 561 // | |
| 562 // Note that it is identical to NativeMovConstReg with the exception of a nop between the | |
| 563 // sethi and the add. The nop is required to be in the delay slot of the call instruction | |
| 564 // which overwrites the sethi during patching. | |
| 565 class NativeMovConstRegPatching; | |
| 566 inline NativeMovConstRegPatching* nativeMovConstRegPatching_at(address address);class NativeMovConstRegPatching: public NativeInstruction { | |
| 567 public: | |
| 568 enum Sparc_specific_constants { | |
| 569 sethi_offset = 0, | |
| 570 #ifdef _LP64 | |
| 571 nop_offset = 7 * BytesPerInstWord, | |
| 572 #else | |
| 573 nop_offset = sethi_offset + BytesPerInstWord, | |
| 574 #endif | |
| 575 add_offset = nop_offset + BytesPerInstWord, | |
| 576 instruction_size = add_offset + BytesPerInstWord | |
| 577 }; | |
| 578 | |
| 579 address instruction_address() const { return addr_at(0); } | |
| 580 address next_instruction_address() const { return addr_at(instruction_size); } | |
| 581 | |
| 582 // (The [set_]data accessor respects oop_type relocs also.) | |
| 583 int data() const; | |
| 584 void set_data(int x); | |
| 585 | |
| 586 // report the destination register | |
| 587 Register destination() { return inv_rd(long_at(sethi_offset)); } | |
| 588 | |
| 589 void verify(); | |
| 590 void print(); | |
| 591 | |
| 592 // unit test stuff | |
| 593 static void test(); | |
| 594 | |
| 595 // Creation | |
| 596 friend inline NativeMovConstRegPatching* nativeMovConstRegPatching_at(address address) { | |
| 597 NativeMovConstRegPatching* test = (NativeMovConstRegPatching*)address; | |
| 598 #ifdef ASSERT | |
| 599 test->verify(); | |
| 600 #endif | |
| 601 return test; | |
| 602 } | |
| 603 | |
| 604 | |
| 605 friend NativeMovConstRegPatching* nativeMovConstRegPatching_before(address address) { | |
| 606 NativeMovConstRegPatching* test = (NativeMovConstRegPatching*)(address - instruction_size); | |
| 607 #ifdef ASSERT | |
| 608 test->verify(); | |
| 609 #endif | |
| 610 return test; | |
| 611 } | |
| 612 | |
| 613 }; | |
| 614 | |
| 615 | |
| 616 // An interface for accessing/manipulating native memory ops | |
| 617 // ld* [reg + offset], reg | |
| 618 // st* reg, [reg + offset] | |
| 619 // sethi %hi(imm), reg; add reg, %lo(imm), reg; ld* [reg1 + reg], reg2 | |
| 620 // sethi %hi(imm), reg; add reg, %lo(imm), reg; st* reg2, [reg1 + reg] | |
| 621 // Ops covered: {lds,ldu,st}{w,b,h}, {ld,st}{d,x} | |
| 622 // | |
| 623 class NativeMovRegMem; | |
| 624 inline NativeMovRegMem* nativeMovRegMem_at (address address); | |
| 625 class NativeMovRegMem: public NativeInstruction { | |
| 626 public: | |
| 627 enum Sparc_specific_constants { | |
| 628 op3_mask_ld = 1 << Assembler::lduw_op3 | | |
| 629 1 << Assembler::ldub_op3 | | |
| 630 1 << Assembler::lduh_op3 | | |
| 631 1 << Assembler::ldd_op3 | | |
| 632 1 << Assembler::ldsw_op3 | | |
| 633 1 << Assembler::ldsb_op3 | | |
| 634 1 << Assembler::ldsh_op3 | | |
| 635 1 << Assembler::ldx_op3, | |
| 636 op3_mask_st = 1 << Assembler::stw_op3 | | |
| 637 1 << Assembler::stb_op3 | | |
| 638 1 << Assembler::sth_op3 | | |
| 639 1 << Assembler::std_op3 | | |
| 640 1 << Assembler::stx_op3, | |
| 641 op3_ldst_int_limit = Assembler::ldf_op3, | |
| 642 op3_mask_ldf = 1 << (Assembler::ldf_op3 - op3_ldst_int_limit) | | |
| 643 1 << (Assembler::lddf_op3 - op3_ldst_int_limit), | |
| 644 op3_mask_stf = 1 << (Assembler::stf_op3 - op3_ldst_int_limit) | | |
| 645 1 << (Assembler::stdf_op3 - op3_ldst_int_limit), | |
| 646 | |
| 647 offset_width = 13, | |
| 648 sethi_offset = 0, | |
| 649 #ifdef _LP64 | |
| 650 add_offset = 7 * BytesPerInstWord, | |
| 651 #else | |
| 652 add_offset = 4, | |
| 653 #endif | |
| 654 ldst_offset = add_offset + BytesPerInstWord | |
| 655 }; | |
| 656 bool is_immediate() const { | |
| 657 // check if instruction is ld* [reg + offset], reg or st* reg, [reg + offset] | |
| 658 int i0 = long_at(0); | |
| 659 return (is_op(i0, Assembler::ldst_op)); | |
| 660 } | |
| 661 | |
| 662 address instruction_address() const { return addr_at(0); } | |
| 663 address next_instruction_address() const { | |
| 664 #ifdef _LP64 | |
| 665 return addr_at(is_immediate() ? 4 : (7 * BytesPerInstWord)); | |
| 666 #else | |
| 667 return addr_at(is_immediate() ? 4 : 12); | |
| 668 #endif | |
| 669 } | |
| 670 intptr_t offset() const { | |
| 671 return is_immediate()? inv_simm(long_at(0), offset_width) : | |
| 672 nativeMovConstReg_at(addr_at(0))->data(); | |
| 673 } | |
| 674 void set_offset(intptr_t x) { | |
| 675 if (is_immediate()) { | |
| 676 guarantee(fits_in_simm(x, offset_width), "data block offset overflow"); | |
| 677 set_long_at(0, set_simm(long_at(0), x, offset_width)); | |
| 678 } else | |
| 679 nativeMovConstReg_at(addr_at(0))->set_data(x); | |
| 680 } | |
| 681 | |
| 682 void add_offset_in_bytes(intptr_t radd_offset) { | |
| 683 set_offset (offset() + radd_offset); | |
| 684 } | |
| 685 | |
| 686 void copy_instruction_to(address new_instruction_address); | |
| 687 | |
| 688 void verify(); | |
| 689 void print (); | |
| 690 | |
| 691 // unit test stuff | |
| 692 static void test(); | |
| 693 | |
| 694 private: | |
| 695 friend inline NativeMovRegMem* nativeMovRegMem_at (address address) { | |
| 696 NativeMovRegMem* test = (NativeMovRegMem*)address; | |
| 697 #ifdef ASSERT | |
| 698 test->verify(); | |
| 699 #endif | |
| 700 return test; | |
| 701 } | |
| 702 }; | |
| 703 | |
| 704 | |
| 705 // An interface for accessing/manipulating native memory ops | |
| 706 // ld* [reg + offset], reg | |
| 707 // st* reg, [reg + offset] | |
| 708 // sethi %hi(imm), reg; nop; add reg, %lo(imm), reg; ld* [reg1 + reg], reg2 | |
| 709 // sethi %hi(imm), reg; nop; add reg, %lo(imm), reg; st* reg2, [reg1 + reg] | |
| 710 // Ops covered: {lds,ldu,st}{w,b,h}, {ld,st}{d,x} | |
| 711 // | |
| 712 // Note that it is identical to NativeMovRegMem with the exception of a nop between the | |
| 713 // sethi and the add. The nop is required to be in the delay slot of the call instruction | |
| 714 // which overwrites the sethi during patching. | |
| 715 class NativeMovRegMemPatching; | |
| 716 inline NativeMovRegMemPatching* nativeMovRegMemPatching_at (address address); | |
| 717 class NativeMovRegMemPatching: public NativeInstruction { | |
| 718 public: | |
| 719 enum Sparc_specific_constants { | |
| 720 op3_mask_ld = 1 << Assembler::lduw_op3 | | |
| 721 1 << Assembler::ldub_op3 | | |
| 722 1 << Assembler::lduh_op3 | | |
| 723 1 << Assembler::ldd_op3 | | |
| 724 1 << Assembler::ldsw_op3 | | |
| 725 1 << Assembler::ldsb_op3 | | |
| 726 1 << Assembler::ldsh_op3 | | |
| 727 1 << Assembler::ldx_op3, | |
| 728 op3_mask_st = 1 << Assembler::stw_op3 | | |
| 729 1 << Assembler::stb_op3 | | |
| 730 1 << Assembler::sth_op3 | | |
| 731 1 << Assembler::std_op3 | | |
| 732 1 << Assembler::stx_op3, | |
| 733 op3_ldst_int_limit = Assembler::ldf_op3, | |
| 734 op3_mask_ldf = 1 << (Assembler::ldf_op3 - op3_ldst_int_limit) | | |
| 735 1 << (Assembler::lddf_op3 - op3_ldst_int_limit), | |
| 736 op3_mask_stf = 1 << (Assembler::stf_op3 - op3_ldst_int_limit) | | |
| 737 1 << (Assembler::stdf_op3 - op3_ldst_int_limit), | |
| 738 | |
| 739 offset_width = 13, | |
| 740 sethi_offset = 0, | |
| 741 #ifdef _LP64 | |
| 742 nop_offset = 7 * BytesPerInstWord, | |
| 743 #else | |
| 744 nop_offset = 4, | |
| 745 #endif | |
| 746 add_offset = nop_offset + BytesPerInstWord, | |
| 747 ldst_offset = add_offset + BytesPerInstWord | |
| 748 }; | |
| 749 bool is_immediate() const { | |
| 750 // check if instruction is ld* [reg + offset], reg or st* reg, [reg + offset] | |
| 751 int i0 = long_at(0); | |
| 752 return (is_op(i0, Assembler::ldst_op)); | |
| 753 } | |
| 754 | |
| 755 address instruction_address() const { return addr_at(0); } | |
| 756 address next_instruction_address() const { | |
| 757 return addr_at(is_immediate()? 4 : 16); | |
| 758 } | |
| 759 int offset() const { | |
| 760 return is_immediate()? inv_simm(long_at(0), offset_width) : | |
| 761 nativeMovConstRegPatching_at(addr_at(0))->data(); | |
| 762 } | |
| 763 void set_offset(int x) { | |
| 764 if (is_immediate()) { | |
| 765 guarantee(fits_in_simm(x, offset_width), "data block offset overflow"); | |
| 766 set_long_at(0, set_simm(long_at(0), x, offset_width)); | |
| 767 } | |
| 768 else | |
| 769 nativeMovConstRegPatching_at(addr_at(0))->set_data(x); | |
| 770 } | |
| 771 | |
| 772 void add_offset_in_bytes(intptr_t radd_offset) { | |
| 773 set_offset (offset() + radd_offset); | |
| 774 } | |
| 775 | |
| 776 void copy_instruction_to(address new_instruction_address); | |
| 777 | |
| 778 void verify(); | |
| 779 void print (); | |
| 780 | |
| 781 // unit test stuff | |
| 782 static void test(); | |
| 783 | |
| 784 private: | |
| 785 friend inline NativeMovRegMemPatching* nativeMovRegMemPatching_at (address address) { | |
| 786 NativeMovRegMemPatching* test = (NativeMovRegMemPatching*)address; | |
| 787 #ifdef ASSERT | |
| 788 test->verify(); | |
| 789 #endif | |
| 790 return test; | |
| 791 } | |
| 792 }; | |
| 793 | |
| 794 | |
| 795 // An interface for accessing/manipulating native jumps | |
| 796 // jump_to addr | |
| 797 // == sethi %hi22(addr), temp ; jumpl reg, %lo10(addr), G0 ; <delay> | |
| 798 // jumpl_to addr, lreg | |
| 799 // == sethi %hi22(addr), temp ; jumpl reg, %lo10(addr), lreg ; <delay> | |
| 800 class NativeJump; | |
| 801 inline NativeJump* nativeJump_at(address address); | |
| 802 class NativeJump: public NativeInstruction { | |
| 803 private: | |
| 804 void guarantee_displacement(int disp, int width) { | |
| 805 guarantee(fits_in_simm(disp, width + 2), "branch displacement overflow"); | |
| 806 } | |
| 807 | |
| 808 public: | |
| 809 enum Sparc_specific_constants { | |
| 810 sethi_offset = 0, | |
| 811 #ifdef _LP64 | |
| 812 jmpl_offset = 7 * BytesPerInstWord, | |
| 813 instruction_size = 9 * BytesPerInstWord // includes delay slot | |
| 814 #else | |
| 815 jmpl_offset = 1 * BytesPerInstWord, | |
| 816 instruction_size = 3 * BytesPerInstWord // includes delay slot | |
| 817 #endif | |
| 818 }; | |
| 819 | |
| 820 address instruction_address() const { return addr_at(0); } | |
| 821 address next_instruction_address() const { return addr_at(instruction_size); } | |
| 822 | |
| 823 #ifdef _LP64 | |
| 824 address jump_destination() const { | |
| 825 return (address) data64(instruction_address(), long_at(jmpl_offset)); | |
| 826 } | |
| 827 void set_jump_destination(address dest) { | |
| 828 set_data64_sethi( instruction_address(), (intptr_t)dest); | |
| 829 set_long_at(jmpl_offset, set_data32_simm13( long_at(jmpl_offset), (intptr_t)dest)); | |
| 830 } | |
| 831 #else | |
| 832 address jump_destination() const { | |
| 833 return (address) data32(long_at(sethi_offset), long_at(jmpl_offset)); | |
| 834 } | |
| 835 void set_jump_destination(address dest) { | |
| 836 set_long_at(sethi_offset, set_data32_sethi( long_at(sethi_offset), (intptr_t)dest)); | |
| 837 set_long_at(jmpl_offset, set_data32_simm13( long_at(jmpl_offset), (intptr_t)dest)); | |
| 838 } | |
| 839 #endif | |
| 840 | |
| 841 // Creation | |
| 842 friend inline NativeJump* nativeJump_at(address address) { | |
| 843 NativeJump* jump = (NativeJump*)address; | |
| 844 #ifdef ASSERT | |
| 845 jump->verify(); | |
| 846 #endif | |
| 847 return jump; | |
| 848 } | |
| 849 | |
| 850 void verify(); | |
| 851 void print(); | |
| 852 | |
| 853 // Unit testing stuff | |
| 854 static void test(); | |
| 855 | |
| 856 // Insertion of native jump instruction | |
| 857 static void insert(address code_pos, address entry); | |
| 858 // MT-safe insertion of native jump at verified method entry | |
| 859 static void check_verified_entry_alignment(address entry, address verified_entry) { | |
| 860 // nothing to do for sparc. | |
| 861 } | |
| 862 static void patch_verified_entry(address entry, address verified_entry, address dest); | |
| 863 }; | |
| 864 | |
| 865 | |
| 866 | |
| 867 // Despite the name, handles only simple branches. | |
| 868 class NativeGeneralJump; | |
| 869 inline NativeGeneralJump* nativeGeneralJump_at(address address); | |
| 870 class NativeGeneralJump: public NativeInstruction { | |
| 871 public: | |
| 872 enum Sparc_specific_constants { | |
| 873 instruction_size = 8 | |
| 874 }; | |
| 875 | |
| 876 address instruction_address() const { return addr_at(0); } | |
| 877 address jump_destination() const { return addr_at(0) + branch_destination_offset(long_at(0)); } | |
| 878 void set_jump_destination(address dest) { | |
| 879 int patched_instr = patch_branch_destination_offset(dest - addr_at(0), long_at(0)); | |
| 880 set_long_at(0, patched_instr); | |
| 881 } | |
| 882 void set_annul() { set_annul_bit(); } | |
| 883 NativeInstruction *delay_slot_instr() { return nativeInstruction_at(addr_at(4));} | |
| 884 void fill_delay_slot(int instr) { set_long_at(4, instr);} | |
| 885 Assembler::Condition condition() { | |
| 886 int x = long_at(0); | |
| 887 return (Assembler::Condition) Assembler::inv_cond(x); | |
| 888 } | |
| 889 | |
| 890 // Creation | |
| 891 friend inline NativeGeneralJump* nativeGeneralJump_at(address address) { | |
| 892 NativeGeneralJump* jump = (NativeGeneralJump*)(address); | |
| 893 #ifdef ASSERT | |
| 894 jump->verify(); | |
| 895 #endif | |
| 896 return jump; | |
| 897 } | |
| 898 | |
| 899 // Insertion of native general jump instruction | |
| 900 static void insert_unconditional(address code_pos, address entry); | |
| 901 static void replace_mt_safe(address instr_addr, address code_buffer); | |
| 902 | |
| 903 void verify(); | |
| 904 }; | |
| 905 | |
| 906 | |
| 907 class NativeIllegalInstruction: public NativeInstruction { | |
| 908 public: | |
| 909 enum Sparc_specific_constants { | |
| 910 instruction_size = 4 | |
| 911 }; | |
| 912 | |
| 913 // Insert illegal opcode as specific address | |
| 914 static void insert(address code_pos); | |
| 915 }; |