Mon, 11 Oct 2010 04:18:58 -0700
6829194: JSR 292 needs to support compressed oops
Reviewed-by: kvn, jrose
duke@435 | 1 | /* |
trims@1907 | 2 | * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | // We have interface for the following instructions: |
duke@435 | 26 | // - NativeInstruction |
duke@435 | 27 | // - - NativeCall |
duke@435 | 28 | // - - NativeFarCall |
duke@435 | 29 | // - - NativeMovConstReg |
duke@435 | 30 | // - - NativeMovConstRegPatching |
duke@435 | 31 | // - - NativeMovRegMem |
duke@435 | 32 | // - - NativeMovRegMemPatching |
duke@435 | 33 | // - - NativeJump |
duke@435 | 34 | // - - NativeGeneralJump |
duke@435 | 35 | // - - NativeIllegalInstruction |
duke@435 | 36 | // The base class for different kinds of native instruction abstractions. |
duke@435 | 37 | // Provides the primitive operations to manipulate code relative to this. |
duke@435 | 38 | class NativeInstruction VALUE_OBJ_CLASS_SPEC { |
duke@435 | 39 | friend class Relocation; |
duke@435 | 40 | |
duke@435 | 41 | public: |
duke@435 | 42 | enum Sparc_specific_constants { |
duke@435 | 43 | nop_instruction_size = 4 |
duke@435 | 44 | }; |
duke@435 | 45 | |
kamg@551 | 46 | bool is_dtrace_trap(); |
duke@435 | 47 | bool is_nop() { return long_at(0) == nop_instruction(); } |
duke@435 | 48 | bool is_call() { return is_op(long_at(0), Assembler::call_op); } |
duke@435 | 49 | bool is_sethi() { return (is_op2(long_at(0), Assembler::sethi_op2) |
duke@435 | 50 | && inv_rd(long_at(0)) != G0); } |
duke@435 | 51 | |
duke@435 | 52 | bool sets_cc() { |
duke@435 | 53 | // conservative (returns true for some instructions that do not set the |
duke@435 | 54 | // the condition code, such as, "save". |
duke@435 | 55 | // Does not return true for the deprecated tagged instructions, such as, TADDcc |
duke@435 | 56 | int x = long_at(0); |
duke@435 | 57 | return (is_op(x, Assembler::arith_op) && |
duke@435 | 58 | (inv_op3(x) & Assembler::cc_bit_op3) == Assembler::cc_bit_op3); |
duke@435 | 59 | } |
duke@435 | 60 | bool is_illegal(); |
duke@435 | 61 | bool is_zombie() { |
duke@435 | 62 | int x = long_at(0); |
duke@435 | 63 | return is_op3(x, |
duke@435 | 64 | VM_Version::v9_instructions_work() ? |
duke@435 | 65 | Assembler::ldsw_op3 : Assembler::lduw_op3, |
duke@435 | 66 | Assembler::ldst_op) |
duke@435 | 67 | && Assembler::inv_rs1(x) == G0 |
duke@435 | 68 | && Assembler::inv_rd(x) == O7; |
duke@435 | 69 | } |
duke@435 | 70 | bool is_ic_miss_trap(); // Inline-cache uses a trap to detect a miss |
duke@435 | 71 | bool is_return() { |
duke@435 | 72 | // is it the output of MacroAssembler::ret or MacroAssembler::retl? |
duke@435 | 73 | int x = long_at(0); |
duke@435 | 74 | const int pc_return_offset = 8; // see frame_sparc.hpp |
duke@435 | 75 | return is_op3(x, Assembler::jmpl_op3, Assembler::arith_op) |
duke@435 | 76 | && (inv_rs1(x) == I7 || inv_rs1(x) == O7) |
duke@435 | 77 | && inv_immed(x) && inv_simm(x, 13) == pc_return_offset |
duke@435 | 78 | && inv_rd(x) == G0; |
duke@435 | 79 | } |
duke@435 | 80 | bool is_int_jump() { |
duke@435 | 81 | // is it the output of MacroAssembler::b? |
duke@435 | 82 | int x = long_at(0); |
duke@435 | 83 | return is_op2(x, Assembler::bp_op2) || is_op2(x, Assembler::br_op2); |
duke@435 | 84 | } |
duke@435 | 85 | bool is_float_jump() { |
duke@435 | 86 | // is it the output of MacroAssembler::fb? |
duke@435 | 87 | int x = long_at(0); |
duke@435 | 88 | return is_op2(x, Assembler::fbp_op2) || is_op2(x, Assembler::fb_op2); |
duke@435 | 89 | } |
duke@435 | 90 | bool is_jump() { |
duke@435 | 91 | return is_int_jump() || is_float_jump(); |
duke@435 | 92 | } |
duke@435 | 93 | bool is_cond_jump() { |
duke@435 | 94 | int x = long_at(0); |
duke@435 | 95 | return (is_int_jump() && Assembler::inv_cond(x) != Assembler::always) || |
duke@435 | 96 | (is_float_jump() && Assembler::inv_cond(x) != Assembler::f_always); |
duke@435 | 97 | } |
duke@435 | 98 | |
duke@435 | 99 | bool is_stack_bang() { |
duke@435 | 100 | int x = long_at(0); |
duke@435 | 101 | return is_op3(x, Assembler::stw_op3, Assembler::ldst_op) && |
duke@435 | 102 | (inv_rd(x) == G0) && (inv_rs1(x) == SP) && (inv_rs2(x) == G3_scratch); |
duke@435 | 103 | } |
duke@435 | 104 | |
duke@435 | 105 | bool is_prefetch() { |
duke@435 | 106 | int x = long_at(0); |
duke@435 | 107 | return is_op3(x, Assembler::prefetch_op3, Assembler::ldst_op); |
duke@435 | 108 | } |
duke@435 | 109 | |
duke@435 | 110 | bool is_membar() { |
duke@435 | 111 | int x = long_at(0); |
duke@435 | 112 | return is_op3(x, Assembler::membar_op3, Assembler::arith_op) && |
duke@435 | 113 | (inv_rd(x) == G0) && (inv_rs1(x) == O7); |
duke@435 | 114 | } |
duke@435 | 115 | |
duke@435 | 116 | bool is_safepoint_poll() { |
duke@435 | 117 | int x = long_at(0); |
duke@435 | 118 | #ifdef _LP64 |
duke@435 | 119 | return is_op3(x, Assembler::ldx_op3, Assembler::ldst_op) && |
duke@435 | 120 | #else |
duke@435 | 121 | return is_op3(x, Assembler::lduw_op3, Assembler::ldst_op) && |
duke@435 | 122 | #endif |
duke@435 | 123 | (inv_rd(x) == G0) && (inv_immed(x) ? Assembler::inv_simm13(x) == 0 : inv_rs2(x) == G0); |
duke@435 | 124 | } |
duke@435 | 125 | |
duke@435 | 126 | bool is_zero_test(Register ®); |
duke@435 | 127 | bool is_load_store_with_small_offset(Register reg); |
duke@435 | 128 | |
duke@435 | 129 | public: |
duke@435 | 130 | #ifdef ASSERT |
duke@435 | 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); } |
duke@435 | 132 | #else |
duke@435 | 133 | // Temporary fix: in optimized mode, u_field is a macro for efficiency reasons (see Assembler::u_field) - needs to be fixed |
duke@435 | 134 | static int rdpc_instruction() { return Assembler::op(Assembler::arith_op ) | Assembler::op3(Assembler::rdreg_op3) | u_field(5, 18, 14) | Assembler::rd(O7); } |
duke@435 | 135 | #endif |
duke@435 | 136 | static int nop_instruction() { return Assembler::op(Assembler::branch_op) | Assembler::op2(Assembler::sethi_op2); } |
duke@435 | 137 | static int illegal_instruction(); // the output of __ breakpoint_trap() |
duke@435 | 138 | static int call_instruction(address destination, address pc) { return Assembler::op(Assembler::call_op) | Assembler::wdisp((intptr_t)destination, (intptr_t)pc, 30); } |
duke@435 | 139 | |
duke@435 | 140 | static int branch_instruction(Assembler::op2s op2val, Assembler::Condition c, bool a) { |
duke@435 | 141 | return Assembler::op(Assembler::branch_op) | Assembler::op2(op2val) | Assembler::annul(a) | Assembler::cond(c); |
duke@435 | 142 | } |
duke@435 | 143 | |
duke@435 | 144 | static int op3_instruction(Assembler::ops opval, Register rd, Assembler::op3s op3val, Register rs1, int simm13a) { |
duke@435 | 145 | return Assembler::op(opval) | Assembler::rd(rd) | Assembler::op3(op3val) | Assembler::rs1(rs1) | Assembler::immed(true) | Assembler::simm(simm13a, 13); |
duke@435 | 146 | } |
duke@435 | 147 | |
duke@435 | 148 | static int sethi_instruction(Register rd, int imm22a) { |
duke@435 | 149 | return Assembler::op(Assembler::branch_op) | Assembler::rd(rd) | Assembler::op2(Assembler::sethi_op2) | Assembler::hi22(imm22a); |
duke@435 | 150 | } |
duke@435 | 151 | |
duke@435 | 152 | protected: |
duke@435 | 153 | address addr_at(int offset) const { return address(this) + offset; } |
duke@435 | 154 | int long_at(int offset) const { return *(int*)addr_at(offset); } |
duke@435 | 155 | void set_long_at(int offset, int i); /* deals with I-cache */ |
duke@435 | 156 | void set_jlong_at(int offset, jlong i); /* deals with I-cache */ |
duke@435 | 157 | void set_addr_at(int offset, address x); /* deals with I-cache */ |
duke@435 | 158 | |
duke@435 | 159 | address instruction_address() const { return addr_at(0); } |
duke@435 | 160 | address next_instruction_address() const { return addr_at(BytesPerInstWord); } |
duke@435 | 161 | |
duke@435 | 162 | static bool is_op( int x, Assembler::ops opval) { |
duke@435 | 163 | return Assembler::inv_op(x) == opval; |
duke@435 | 164 | } |
duke@435 | 165 | static bool is_op2(int x, Assembler::op2s op2val) { |
duke@435 | 166 | return Assembler::inv_op(x) == Assembler::branch_op && Assembler::inv_op2(x) == op2val; |
duke@435 | 167 | } |
duke@435 | 168 | static bool is_op3(int x, Assembler::op3s op3val, Assembler::ops opval) { |
duke@435 | 169 | return Assembler::inv_op(x) == opval && Assembler::inv_op3(x) == op3val; |
duke@435 | 170 | } |
duke@435 | 171 | |
duke@435 | 172 | // utilities to help subclasses decode: |
duke@435 | 173 | static Register inv_rd( int x ) { return Assembler::inv_rd( x); } |
duke@435 | 174 | static Register inv_rs1( int x ) { return Assembler::inv_rs1(x); } |
duke@435 | 175 | static Register inv_rs2( int x ) { return Assembler::inv_rs2(x); } |
duke@435 | 176 | |
duke@435 | 177 | static bool inv_immed( int x ) { return Assembler::inv_immed(x); } |
duke@435 | 178 | static bool inv_annul( int x ) { return (Assembler::annul(true) & x) != 0; } |
duke@435 | 179 | static int inv_cond( int x ) { return Assembler::inv_cond(x); } |
duke@435 | 180 | |
duke@435 | 181 | static int inv_op( int x ) { return Assembler::inv_op( x); } |
duke@435 | 182 | static int inv_op2( int x ) { return Assembler::inv_op2(x); } |
duke@435 | 183 | static int inv_op3( int x ) { return Assembler::inv_op3(x); } |
duke@435 | 184 | |
duke@435 | 185 | static int inv_simm( int x, int nbits ) { return Assembler::inv_simm(x, nbits); } |
duke@435 | 186 | static intptr_t inv_wdisp( int x, int nbits ) { return Assembler::inv_wdisp( x, 0, nbits); } |
duke@435 | 187 | static intptr_t inv_wdisp16( int x ) { return Assembler::inv_wdisp16(x, 0); } |
duke@435 | 188 | static int branch_destination_offset(int x) { return Assembler::branch_destination(x, 0); } |
duke@435 | 189 | static int patch_branch_destination_offset(int dest_offset, int x) { |
duke@435 | 190 | return Assembler::patched_branch(dest_offset, x, 0); |
duke@435 | 191 | } |
duke@435 | 192 | void set_annul_bit() { set_long_at(0, long_at(0) | Assembler::annul(true)); } |
duke@435 | 193 | |
duke@435 | 194 | // utility for checking if x is either of 2 small constants |
duke@435 | 195 | static bool is_either(int x, int k1, int k2) { |
duke@435 | 196 | // return x == k1 || x == k2; |
duke@435 | 197 | return (1 << x) & (1 << k1 | 1 << k2); |
duke@435 | 198 | } |
duke@435 | 199 | |
duke@435 | 200 | // utility for checking overflow of signed instruction fields |
duke@435 | 201 | static bool fits_in_simm(int x, int nbits) { |
duke@435 | 202 | // cf. Assembler::assert_signed_range() |
duke@435 | 203 | // return -(1 << nbits-1) <= x && x < ( 1 << nbits-1), |
duke@435 | 204 | return (unsigned)(x + (1 << nbits-1)) < (unsigned)(1 << nbits); |
duke@435 | 205 | } |
duke@435 | 206 | |
duke@435 | 207 | // set a signed immediate field |
duke@435 | 208 | static int set_simm(int insn, int imm, int nbits) { |
duke@435 | 209 | return (insn &~ Assembler::simm(-1, nbits)) | Assembler::simm(imm, nbits); |
duke@435 | 210 | } |
duke@435 | 211 | |
duke@435 | 212 | // set a wdisp field (disp should be the difference of two addresses) |
duke@435 | 213 | static int set_wdisp(int insn, intptr_t disp, int nbits) { |
duke@435 | 214 | return (insn &~ Assembler::wdisp((intptr_t)-4, (intptr_t)0, nbits)) | Assembler::wdisp(disp, 0, nbits); |
duke@435 | 215 | } |
duke@435 | 216 | |
duke@435 | 217 | static int set_wdisp16(int insn, intptr_t disp) { |
duke@435 | 218 | return (insn &~ Assembler::wdisp16((intptr_t)-4, 0)) | Assembler::wdisp16(disp, 0); |
duke@435 | 219 | } |
duke@435 | 220 | |
duke@435 | 221 | // get a simm13 field from an arithmetic or memory instruction |
duke@435 | 222 | static int get_simm13(int insn) { |
duke@435 | 223 | assert(is_either(Assembler::inv_op(insn), |
duke@435 | 224 | Assembler::arith_op, Assembler::ldst_op) && |
duke@435 | 225 | (insn & Assembler::immed(true)), "must have a simm13 field"); |
duke@435 | 226 | return Assembler::inv_simm(insn, 13); |
duke@435 | 227 | } |
duke@435 | 228 | |
duke@435 | 229 | // set the simm13 field of an arithmetic or memory instruction |
duke@435 | 230 | static bool set_simm13(int insn, int imm) { |
duke@435 | 231 | get_simm13(insn); // tickle the assertion check |
duke@435 | 232 | return set_simm(insn, imm, 13); |
duke@435 | 233 | } |
duke@435 | 234 | |
duke@435 | 235 | // combine the fields of a sethi stream (7 instructions ) and an add, jmp or ld/st |
duke@435 | 236 | static intptr_t data64( address pc, int arith_insn ) { |
duke@435 | 237 | assert(is_op2(*(unsigned int *)pc, Assembler::sethi_op2), "must be sethi"); |
duke@435 | 238 | intptr_t hi = (intptr_t)gethi( (unsigned int *)pc ); |
duke@435 | 239 | intptr_t lo = (intptr_t)get_simm13(arith_insn); |
duke@435 | 240 | assert((unsigned)lo < (1 << 10), "offset field of set_oop must be 10 bits"); |
duke@435 | 241 | return hi | lo; |
duke@435 | 242 | } |
duke@435 | 243 | |
duke@435 | 244 | // Regenerate the instruction sequence that performs the 64 bit |
duke@435 | 245 | // sethi. This only does the sethi. The disp field (bottom 10 bits) |
twisti@1040 | 246 | // must be handled separately. |
duke@435 | 247 | static void set_data64_sethi(address instaddr, intptr_t x); |
duke@435 | 248 | |
duke@435 | 249 | // combine the fields of a sethi/simm13 pair (simm13 = or, add, jmpl, ld/st) |
duke@435 | 250 | static int data32(int sethi_insn, int arith_insn) { |
duke@435 | 251 | assert(is_op2(sethi_insn, Assembler::sethi_op2), "must be sethi"); |
duke@435 | 252 | int hi = Assembler::inv_hi22(sethi_insn); |
duke@435 | 253 | int lo = get_simm13(arith_insn); |
duke@435 | 254 | assert((unsigned)lo < (1 << 10), "offset field of set_oop must be 10 bits"); |
duke@435 | 255 | return hi | lo; |
duke@435 | 256 | } |
duke@435 | 257 | |
duke@435 | 258 | static int set_data32_sethi(int sethi_insn, int imm) { |
duke@435 | 259 | // note that Assembler::hi22 clips the low 10 bits for us |
duke@435 | 260 | assert(is_op2(sethi_insn, Assembler::sethi_op2), "must be sethi"); |
duke@435 | 261 | return (sethi_insn &~ Assembler::hi22(-1)) | Assembler::hi22(imm); |
duke@435 | 262 | } |
duke@435 | 263 | |
duke@435 | 264 | static int set_data32_simm13(int arith_insn, int imm) { |
duke@435 | 265 | get_simm13(arith_insn); // tickle the assertion check |
duke@435 | 266 | int imm10 = Assembler::low10(imm); |
duke@435 | 267 | return (arith_insn &~ Assembler::simm(-1, 13)) | Assembler::simm(imm10, 13); |
duke@435 | 268 | } |
duke@435 | 269 | |
duke@435 | 270 | static int low10(int imm) { |
duke@435 | 271 | return Assembler::low10(imm); |
duke@435 | 272 | } |
duke@435 | 273 | |
duke@435 | 274 | // Perform the inverse of the LP64 Macroassembler::sethi |
duke@435 | 275 | // routine. Extracts the 54 bits of address from the instruction |
duke@435 | 276 | // stream. This routine must agree with the sethi routine in |
duke@435 | 277 | // assembler_inline_sparc.hpp |
duke@435 | 278 | static address gethi( unsigned int *pc ) { |
duke@435 | 279 | int i = 0; |
duke@435 | 280 | uintptr_t adr; |
duke@435 | 281 | // We first start out with the real sethi instruction |
duke@435 | 282 | assert(is_op2(*pc, Assembler::sethi_op2), "in gethi - must be sethi"); |
duke@435 | 283 | adr = (unsigned int)Assembler::inv_hi22( *(pc++) ); |
duke@435 | 284 | i++; |
duke@435 | 285 | while ( i < 7 ) { |
duke@435 | 286 | // We're done if we hit a nop |
duke@435 | 287 | if ( (int)*pc == nop_instruction() ) break; |
duke@435 | 288 | assert ( Assembler::inv_op(*pc) == Assembler::arith_op, "in gethi - must be arith_op" ); |
duke@435 | 289 | switch ( Assembler::inv_op3(*pc) ) { |
duke@435 | 290 | case Assembler::xor_op3: |
duke@435 | 291 | adr ^= (intptr_t)get_simm13( *pc ); |
duke@435 | 292 | return ( (address)adr ); |
duke@435 | 293 | break; |
duke@435 | 294 | case Assembler::sll_op3: |
duke@435 | 295 | adr <<= ( *pc & 0x3f ); |
duke@435 | 296 | break; |
duke@435 | 297 | case Assembler::or_op3: |
duke@435 | 298 | adr |= (intptr_t)get_simm13( *pc ); |
duke@435 | 299 | break; |
duke@435 | 300 | default: |
duke@435 | 301 | assert ( 0, "in gethi - Should not reach here" ); |
duke@435 | 302 | break; |
duke@435 | 303 | } |
duke@435 | 304 | pc++; |
duke@435 | 305 | i++; |
duke@435 | 306 | } |
duke@435 | 307 | return ( (address)adr ); |
duke@435 | 308 | } |
duke@435 | 309 | |
duke@435 | 310 | public: |
duke@435 | 311 | void verify(); |
duke@435 | 312 | void print(); |
duke@435 | 313 | |
duke@435 | 314 | // unit test stuff |
duke@435 | 315 | static void test() {} // override for testing |
duke@435 | 316 | |
duke@435 | 317 | inline friend NativeInstruction* nativeInstruction_at(address address); |
duke@435 | 318 | }; |
duke@435 | 319 | |
duke@435 | 320 | inline NativeInstruction* nativeInstruction_at(address address) { |
duke@435 | 321 | NativeInstruction* inst = (NativeInstruction*)address; |
duke@435 | 322 | #ifdef ASSERT |
duke@435 | 323 | inst->verify(); |
duke@435 | 324 | #endif |
duke@435 | 325 | return inst; |
duke@435 | 326 | } |
duke@435 | 327 | |
duke@435 | 328 | |
duke@435 | 329 | |
duke@435 | 330 | //----------------------------------------------------------------------------- |
duke@435 | 331 | |
duke@435 | 332 | // The NativeCall is an abstraction for accessing/manipulating native call imm32 instructions. |
duke@435 | 333 | // (used to manipulate inline caches, primitive & dll calls, etc.) |
duke@435 | 334 | inline NativeCall* nativeCall_at(address instr); |
duke@435 | 335 | inline NativeCall* nativeCall_overwriting_at(address instr, |
duke@435 | 336 | address destination); |
duke@435 | 337 | inline NativeCall* nativeCall_before(address return_address); |
duke@435 | 338 | class NativeCall: public NativeInstruction { |
duke@435 | 339 | public: |
duke@435 | 340 | enum Sparc_specific_constants { |
duke@435 | 341 | instruction_size = 8, |
duke@435 | 342 | return_address_offset = 8, |
duke@435 | 343 | call_displacement_width = 30, |
duke@435 | 344 | displacement_offset = 0, |
duke@435 | 345 | instruction_offset = 0 |
duke@435 | 346 | }; |
duke@435 | 347 | address instruction_address() const { return addr_at(0); } |
duke@435 | 348 | address next_instruction_address() const { return addr_at(instruction_size); } |
duke@435 | 349 | address return_address() const { return addr_at(return_address_offset); } |
duke@435 | 350 | |
duke@435 | 351 | address destination() const { return inv_wdisp(long_at(0), call_displacement_width) + instruction_address(); } |
duke@435 | 352 | address displacement_address() const { return addr_at(displacement_offset); } |
duke@435 | 353 | void set_destination(address dest) { set_long_at(0, set_wdisp(long_at(0), dest - instruction_address(), call_displacement_width)); } |
duke@435 | 354 | void set_destination_mt_safe(address dest); |
duke@435 | 355 | |
duke@435 | 356 | void verify_alignment() {} // do nothing on sparc |
duke@435 | 357 | void verify(); |
duke@435 | 358 | void print(); |
duke@435 | 359 | |
duke@435 | 360 | // unit test stuff |
duke@435 | 361 | static void test(); |
duke@435 | 362 | |
duke@435 | 363 | // Creation |
duke@435 | 364 | friend inline NativeCall* nativeCall_at(address instr); |
duke@435 | 365 | friend NativeCall* nativeCall_overwriting_at(address instr, address destination = NULL) { |
duke@435 | 366 | // insert a "blank" call: |
duke@435 | 367 | NativeCall* call = (NativeCall*)instr; |
duke@435 | 368 | call->set_long_at(0 * BytesPerInstWord, call_instruction(destination, instr)); |
duke@435 | 369 | call->set_long_at(1 * BytesPerInstWord, nop_instruction()); |
duke@435 | 370 | assert(call->addr_at(2 * BytesPerInstWord) - instr == instruction_size, "instruction size"); |
duke@435 | 371 | // check its structure now: |
duke@435 | 372 | assert(nativeCall_at(instr)->destination() == destination, "correct call destination"); |
duke@435 | 373 | return call; |
duke@435 | 374 | } |
duke@435 | 375 | |
duke@435 | 376 | friend inline NativeCall* nativeCall_before(address return_address) { |
duke@435 | 377 | NativeCall* call = (NativeCall*)(return_address - return_address_offset); |
duke@435 | 378 | #ifdef ASSERT |
duke@435 | 379 | call->verify(); |
duke@435 | 380 | #endif |
duke@435 | 381 | return call; |
duke@435 | 382 | } |
duke@435 | 383 | |
duke@435 | 384 | static bool is_call_at(address instr) { |
duke@435 | 385 | return nativeInstruction_at(instr)->is_call(); |
duke@435 | 386 | } |
duke@435 | 387 | |
duke@435 | 388 | static bool is_call_before(address instr) { |
duke@435 | 389 | return nativeInstruction_at(instr - return_address_offset)->is_call(); |
duke@435 | 390 | } |
duke@435 | 391 | |
duke@435 | 392 | static bool is_call_to(address instr, address target) { |
duke@435 | 393 | return nativeInstruction_at(instr)->is_call() && |
duke@435 | 394 | nativeCall_at(instr)->destination() == target; |
duke@435 | 395 | } |
duke@435 | 396 | |
duke@435 | 397 | // MT-safe patching of a call instruction. |
duke@435 | 398 | static void insert(address code_pos, address entry) { |
duke@435 | 399 | (void)nativeCall_overwriting_at(code_pos, entry); |
duke@435 | 400 | } |
duke@435 | 401 | |
duke@435 | 402 | static void replace_mt_safe(address instr_addr, address code_buffer); |
duke@435 | 403 | }; |
duke@435 | 404 | inline NativeCall* nativeCall_at(address instr) { |
duke@435 | 405 | NativeCall* call = (NativeCall*)instr; |
duke@435 | 406 | #ifdef ASSERT |
duke@435 | 407 | call->verify(); |
duke@435 | 408 | #endif |
duke@435 | 409 | return call; |
duke@435 | 410 | } |
duke@435 | 411 | |
duke@435 | 412 | // The NativeFarCall is an abstraction for accessing/manipulating native call-anywhere |
duke@435 | 413 | // instructions in the sparcv9 vm. Used to call native methods which may be loaded |
duke@435 | 414 | // anywhere in the address space, possibly out of reach of a call instruction. |
duke@435 | 415 | |
duke@435 | 416 | #ifndef _LP64 |
duke@435 | 417 | |
duke@435 | 418 | // On 32-bit systems, a far call is the same as a near one. |
duke@435 | 419 | class NativeFarCall; |
duke@435 | 420 | inline NativeFarCall* nativeFarCall_at(address instr); |
duke@435 | 421 | class NativeFarCall : public NativeCall { |
duke@435 | 422 | public: |
duke@435 | 423 | friend inline NativeFarCall* nativeFarCall_at(address instr) { return (NativeFarCall*)nativeCall_at(instr); } |
duke@435 | 424 | friend NativeFarCall* nativeFarCall_overwriting_at(address instr, address destination = NULL) |
duke@435 | 425 | { return (NativeFarCall*)nativeCall_overwriting_at(instr, destination); } |
duke@435 | 426 | friend NativeFarCall* nativeFarCall_before(address return_address) |
duke@435 | 427 | { return (NativeFarCall*)nativeCall_before(return_address); } |
duke@435 | 428 | }; |
duke@435 | 429 | |
duke@435 | 430 | #else |
duke@435 | 431 | |
duke@435 | 432 | // The format of this extended-range call is: |
duke@435 | 433 | // jumpl_to addr, lreg |
duke@435 | 434 | // == sethi %hi54(addr), O7 ; jumpl O7, %lo10(addr), O7 ; <delay> |
duke@435 | 435 | // That is, it is essentially the same as a NativeJump. |
duke@435 | 436 | class NativeFarCall; |
duke@435 | 437 | inline NativeFarCall* nativeFarCall_overwriting_at(address instr, address destination); |
duke@435 | 438 | inline NativeFarCall* nativeFarCall_at(address instr); |
duke@435 | 439 | class NativeFarCall: public NativeInstruction { |
duke@435 | 440 | public: |
duke@435 | 441 | enum Sparc_specific_constants { |
duke@435 | 442 | // instruction_size includes the delay slot instruction. |
duke@435 | 443 | instruction_size = 9 * BytesPerInstWord, |
duke@435 | 444 | return_address_offset = 9 * BytesPerInstWord, |
duke@435 | 445 | jmpl_offset = 7 * BytesPerInstWord, |
duke@435 | 446 | displacement_offset = 0, |
duke@435 | 447 | instruction_offset = 0 |
duke@435 | 448 | }; |
duke@435 | 449 | address instruction_address() const { return addr_at(0); } |
duke@435 | 450 | address next_instruction_address() const { return addr_at(instruction_size); } |
duke@435 | 451 | address return_address() const { return addr_at(return_address_offset); } |
duke@435 | 452 | |
duke@435 | 453 | address destination() const { |
duke@435 | 454 | return (address) data64(addr_at(0), long_at(jmpl_offset)); |
duke@435 | 455 | } |
duke@435 | 456 | address displacement_address() const { return addr_at(displacement_offset); } |
duke@435 | 457 | void set_destination(address dest); |
duke@435 | 458 | |
duke@435 | 459 | bool destination_is_compiled_verified_entry_point(); |
duke@435 | 460 | |
duke@435 | 461 | void verify(); |
duke@435 | 462 | void print(); |
duke@435 | 463 | |
duke@435 | 464 | // unit test stuff |
duke@435 | 465 | static void test(); |
duke@435 | 466 | |
duke@435 | 467 | // Creation |
duke@435 | 468 | friend inline NativeFarCall* nativeFarCall_at(address instr) { |
duke@435 | 469 | NativeFarCall* call = (NativeFarCall*)instr; |
duke@435 | 470 | #ifdef ASSERT |
duke@435 | 471 | call->verify(); |
duke@435 | 472 | #endif |
duke@435 | 473 | return call; |
duke@435 | 474 | } |
duke@435 | 475 | |
duke@435 | 476 | friend inline NativeFarCall* nativeFarCall_overwriting_at(address instr, address destination = NULL) { |
duke@435 | 477 | Unimplemented(); |
duke@435 | 478 | NativeFarCall* call = (NativeFarCall*)instr; |
duke@435 | 479 | return call; |
duke@435 | 480 | } |
duke@435 | 481 | |
duke@435 | 482 | friend NativeFarCall* nativeFarCall_before(address return_address) { |
duke@435 | 483 | NativeFarCall* call = (NativeFarCall*)(return_address - return_address_offset); |
duke@435 | 484 | #ifdef ASSERT |
duke@435 | 485 | call->verify(); |
duke@435 | 486 | #endif |
duke@435 | 487 | return call; |
duke@435 | 488 | } |
duke@435 | 489 | |
duke@435 | 490 | static bool is_call_at(address instr); |
duke@435 | 491 | |
duke@435 | 492 | // MT-safe patching of a call instruction. |
duke@435 | 493 | static void insert(address code_pos, address entry) { |
duke@435 | 494 | (void)nativeFarCall_overwriting_at(code_pos, entry); |
duke@435 | 495 | } |
duke@435 | 496 | static void replace_mt_safe(address instr_addr, address code_buffer); |
duke@435 | 497 | }; |
duke@435 | 498 | |
duke@435 | 499 | #endif // _LP64 |
duke@435 | 500 | |
duke@435 | 501 | // An interface for accessing/manipulating native set_oop imm, reg instructions. |
duke@435 | 502 | // (used to manipulate inlined data references, etc.) |
duke@435 | 503 | // set_oop imm, reg |
duke@435 | 504 | // == sethi %hi22(imm), reg ; add reg, %lo10(imm), reg |
duke@435 | 505 | class NativeMovConstReg; |
duke@435 | 506 | inline NativeMovConstReg* nativeMovConstReg_at(address address); |
duke@435 | 507 | class NativeMovConstReg: public NativeInstruction { |
duke@435 | 508 | public: |
duke@435 | 509 | enum Sparc_specific_constants { |
duke@435 | 510 | sethi_offset = 0, |
duke@435 | 511 | #ifdef _LP64 |
duke@435 | 512 | add_offset = 7 * BytesPerInstWord, |
duke@435 | 513 | instruction_size = 8 * BytesPerInstWord |
duke@435 | 514 | #else |
duke@435 | 515 | add_offset = 4, |
duke@435 | 516 | instruction_size = 8 |
duke@435 | 517 | #endif |
duke@435 | 518 | }; |
duke@435 | 519 | |
duke@435 | 520 | address instruction_address() const { return addr_at(0); } |
duke@435 | 521 | address next_instruction_address() const { return addr_at(instruction_size); } |
duke@435 | 522 | |
duke@435 | 523 | // (The [set_]data accessor respects oop_type relocs also.) |
duke@435 | 524 | intptr_t data() const; |
duke@435 | 525 | void set_data(intptr_t x); |
duke@435 | 526 | |
duke@435 | 527 | // report the destination register |
duke@435 | 528 | Register destination() { return inv_rd(long_at(sethi_offset)); } |
duke@435 | 529 | |
duke@435 | 530 | void verify(); |
duke@435 | 531 | void print(); |
duke@435 | 532 | |
duke@435 | 533 | // unit test stuff |
duke@435 | 534 | static void test(); |
duke@435 | 535 | |
duke@435 | 536 | // Creation |
duke@435 | 537 | friend inline NativeMovConstReg* nativeMovConstReg_at(address address) { |
duke@435 | 538 | NativeMovConstReg* test = (NativeMovConstReg*)address; |
duke@435 | 539 | #ifdef ASSERT |
duke@435 | 540 | test->verify(); |
duke@435 | 541 | #endif |
duke@435 | 542 | return test; |
duke@435 | 543 | } |
duke@435 | 544 | |
duke@435 | 545 | |
duke@435 | 546 | friend NativeMovConstReg* nativeMovConstReg_before(address address) { |
duke@435 | 547 | NativeMovConstReg* test = (NativeMovConstReg*)(address - instruction_size); |
duke@435 | 548 | #ifdef ASSERT |
duke@435 | 549 | test->verify(); |
duke@435 | 550 | #endif |
duke@435 | 551 | return test; |
duke@435 | 552 | } |
duke@435 | 553 | |
duke@435 | 554 | }; |
duke@435 | 555 | |
duke@435 | 556 | |
duke@435 | 557 | // An interface for accessing/manipulating native set_oop imm, reg instructions. |
duke@435 | 558 | // (used to manipulate inlined data references, etc.) |
duke@435 | 559 | // set_oop imm, reg |
duke@435 | 560 | // == sethi %hi22(imm), reg; nop; add reg, %lo10(imm), reg |
duke@435 | 561 | // |
duke@435 | 562 | // Note that it is identical to NativeMovConstReg with the exception of a nop between the |
duke@435 | 563 | // sethi and the add. The nop is required to be in the delay slot of the call instruction |
duke@435 | 564 | // which overwrites the sethi during patching. |
duke@435 | 565 | class NativeMovConstRegPatching; |
duke@435 | 566 | inline NativeMovConstRegPatching* nativeMovConstRegPatching_at(address address);class NativeMovConstRegPatching: public NativeInstruction { |
duke@435 | 567 | public: |
duke@435 | 568 | enum Sparc_specific_constants { |
duke@435 | 569 | sethi_offset = 0, |
duke@435 | 570 | #ifdef _LP64 |
duke@435 | 571 | nop_offset = 7 * BytesPerInstWord, |
duke@435 | 572 | #else |
duke@435 | 573 | nop_offset = sethi_offset + BytesPerInstWord, |
duke@435 | 574 | #endif |
duke@435 | 575 | add_offset = nop_offset + BytesPerInstWord, |
duke@435 | 576 | instruction_size = add_offset + BytesPerInstWord |
duke@435 | 577 | }; |
duke@435 | 578 | |
duke@435 | 579 | address instruction_address() const { return addr_at(0); } |
duke@435 | 580 | address next_instruction_address() const { return addr_at(instruction_size); } |
duke@435 | 581 | |
duke@435 | 582 | // (The [set_]data accessor respects oop_type relocs also.) |
duke@435 | 583 | int data() const; |
duke@435 | 584 | void set_data(int x); |
duke@435 | 585 | |
duke@435 | 586 | // report the destination register |
duke@435 | 587 | Register destination() { return inv_rd(long_at(sethi_offset)); } |
duke@435 | 588 | |
duke@435 | 589 | void verify(); |
duke@435 | 590 | void print(); |
duke@435 | 591 | |
duke@435 | 592 | // unit test stuff |
duke@435 | 593 | static void test(); |
duke@435 | 594 | |
duke@435 | 595 | // Creation |
duke@435 | 596 | friend inline NativeMovConstRegPatching* nativeMovConstRegPatching_at(address address) { |
duke@435 | 597 | NativeMovConstRegPatching* test = (NativeMovConstRegPatching*)address; |
duke@435 | 598 | #ifdef ASSERT |
duke@435 | 599 | test->verify(); |
duke@435 | 600 | #endif |
duke@435 | 601 | return test; |
duke@435 | 602 | } |
duke@435 | 603 | |
duke@435 | 604 | |
duke@435 | 605 | friend NativeMovConstRegPatching* nativeMovConstRegPatching_before(address address) { |
duke@435 | 606 | NativeMovConstRegPatching* test = (NativeMovConstRegPatching*)(address - instruction_size); |
duke@435 | 607 | #ifdef ASSERT |
duke@435 | 608 | test->verify(); |
duke@435 | 609 | #endif |
duke@435 | 610 | return test; |
duke@435 | 611 | } |
duke@435 | 612 | |
duke@435 | 613 | }; |
duke@435 | 614 | |
duke@435 | 615 | |
duke@435 | 616 | // An interface for accessing/manipulating native memory ops |
duke@435 | 617 | // ld* [reg + offset], reg |
duke@435 | 618 | // st* reg, [reg + offset] |
duke@435 | 619 | // sethi %hi(imm), reg; add reg, %lo(imm), reg; ld* [reg1 + reg], reg2 |
duke@435 | 620 | // sethi %hi(imm), reg; add reg, %lo(imm), reg; st* reg2, [reg1 + reg] |
duke@435 | 621 | // Ops covered: {lds,ldu,st}{w,b,h}, {ld,st}{d,x} |
duke@435 | 622 | // |
duke@435 | 623 | class NativeMovRegMem; |
duke@435 | 624 | inline NativeMovRegMem* nativeMovRegMem_at (address address); |
duke@435 | 625 | class NativeMovRegMem: public NativeInstruction { |
duke@435 | 626 | public: |
duke@435 | 627 | enum Sparc_specific_constants { |
duke@435 | 628 | op3_mask_ld = 1 << Assembler::lduw_op3 | |
duke@435 | 629 | 1 << Assembler::ldub_op3 | |
duke@435 | 630 | 1 << Assembler::lduh_op3 | |
duke@435 | 631 | 1 << Assembler::ldd_op3 | |
duke@435 | 632 | 1 << Assembler::ldsw_op3 | |
duke@435 | 633 | 1 << Assembler::ldsb_op3 | |
duke@435 | 634 | 1 << Assembler::ldsh_op3 | |
duke@435 | 635 | 1 << Assembler::ldx_op3, |
duke@435 | 636 | op3_mask_st = 1 << Assembler::stw_op3 | |
duke@435 | 637 | 1 << Assembler::stb_op3 | |
duke@435 | 638 | 1 << Assembler::sth_op3 | |
duke@435 | 639 | 1 << Assembler::std_op3 | |
duke@435 | 640 | 1 << Assembler::stx_op3, |
duke@435 | 641 | op3_ldst_int_limit = Assembler::ldf_op3, |
duke@435 | 642 | op3_mask_ldf = 1 << (Assembler::ldf_op3 - op3_ldst_int_limit) | |
duke@435 | 643 | 1 << (Assembler::lddf_op3 - op3_ldst_int_limit), |
duke@435 | 644 | op3_mask_stf = 1 << (Assembler::stf_op3 - op3_ldst_int_limit) | |
duke@435 | 645 | 1 << (Assembler::stdf_op3 - op3_ldst_int_limit), |
duke@435 | 646 | |
duke@435 | 647 | offset_width = 13, |
duke@435 | 648 | sethi_offset = 0, |
duke@435 | 649 | #ifdef _LP64 |
duke@435 | 650 | add_offset = 7 * BytesPerInstWord, |
duke@435 | 651 | #else |
duke@435 | 652 | add_offset = 4, |
duke@435 | 653 | #endif |
duke@435 | 654 | ldst_offset = add_offset + BytesPerInstWord |
duke@435 | 655 | }; |
duke@435 | 656 | bool is_immediate() const { |
duke@435 | 657 | // check if instruction is ld* [reg + offset], reg or st* reg, [reg + offset] |
duke@435 | 658 | int i0 = long_at(0); |
duke@435 | 659 | return (is_op(i0, Assembler::ldst_op)); |
duke@435 | 660 | } |
duke@435 | 661 | |
duke@435 | 662 | address instruction_address() const { return addr_at(0); } |
duke@435 | 663 | address next_instruction_address() const { |
duke@435 | 664 | #ifdef _LP64 |
duke@435 | 665 | return addr_at(is_immediate() ? 4 : (7 * BytesPerInstWord)); |
duke@435 | 666 | #else |
duke@435 | 667 | return addr_at(is_immediate() ? 4 : 12); |
duke@435 | 668 | #endif |
duke@435 | 669 | } |
duke@435 | 670 | intptr_t offset() const { |
duke@435 | 671 | return is_immediate()? inv_simm(long_at(0), offset_width) : |
duke@435 | 672 | nativeMovConstReg_at(addr_at(0))->data(); |
duke@435 | 673 | } |
duke@435 | 674 | void set_offset(intptr_t x) { |
duke@435 | 675 | if (is_immediate()) { |
duke@435 | 676 | guarantee(fits_in_simm(x, offset_width), "data block offset overflow"); |
duke@435 | 677 | set_long_at(0, set_simm(long_at(0), x, offset_width)); |
duke@435 | 678 | } else |
duke@435 | 679 | nativeMovConstReg_at(addr_at(0))->set_data(x); |
duke@435 | 680 | } |
duke@435 | 681 | |
duke@435 | 682 | void add_offset_in_bytes(intptr_t radd_offset) { |
duke@435 | 683 | set_offset (offset() + radd_offset); |
duke@435 | 684 | } |
duke@435 | 685 | |
duke@435 | 686 | void copy_instruction_to(address new_instruction_address); |
duke@435 | 687 | |
duke@435 | 688 | void verify(); |
duke@435 | 689 | void print (); |
duke@435 | 690 | |
duke@435 | 691 | // unit test stuff |
duke@435 | 692 | static void test(); |
duke@435 | 693 | |
duke@435 | 694 | private: |
duke@435 | 695 | friend inline NativeMovRegMem* nativeMovRegMem_at (address address) { |
duke@435 | 696 | NativeMovRegMem* test = (NativeMovRegMem*)address; |
duke@435 | 697 | #ifdef ASSERT |
duke@435 | 698 | test->verify(); |
duke@435 | 699 | #endif |
duke@435 | 700 | return test; |
duke@435 | 701 | } |
duke@435 | 702 | }; |
duke@435 | 703 | |
duke@435 | 704 | |
duke@435 | 705 | // An interface for accessing/manipulating native memory ops |
duke@435 | 706 | // ld* [reg + offset], reg |
duke@435 | 707 | // st* reg, [reg + offset] |
duke@435 | 708 | // sethi %hi(imm), reg; nop; add reg, %lo(imm), reg; ld* [reg1 + reg], reg2 |
duke@435 | 709 | // sethi %hi(imm), reg; nop; add reg, %lo(imm), reg; st* reg2, [reg1 + reg] |
duke@435 | 710 | // Ops covered: {lds,ldu,st}{w,b,h}, {ld,st}{d,x} |
duke@435 | 711 | // |
duke@435 | 712 | // Note that it is identical to NativeMovRegMem with the exception of a nop between the |
duke@435 | 713 | // sethi and the add. The nop is required to be in the delay slot of the call instruction |
duke@435 | 714 | // which overwrites the sethi during patching. |
duke@435 | 715 | class NativeMovRegMemPatching; |
duke@435 | 716 | inline NativeMovRegMemPatching* nativeMovRegMemPatching_at (address address); |
duke@435 | 717 | class NativeMovRegMemPatching: public NativeInstruction { |
duke@435 | 718 | public: |
duke@435 | 719 | enum Sparc_specific_constants { |
duke@435 | 720 | op3_mask_ld = 1 << Assembler::lduw_op3 | |
duke@435 | 721 | 1 << Assembler::ldub_op3 | |
duke@435 | 722 | 1 << Assembler::lduh_op3 | |
duke@435 | 723 | 1 << Assembler::ldd_op3 | |
duke@435 | 724 | 1 << Assembler::ldsw_op3 | |
duke@435 | 725 | 1 << Assembler::ldsb_op3 | |
duke@435 | 726 | 1 << Assembler::ldsh_op3 | |
duke@435 | 727 | 1 << Assembler::ldx_op3, |
duke@435 | 728 | op3_mask_st = 1 << Assembler::stw_op3 | |
duke@435 | 729 | 1 << Assembler::stb_op3 | |
duke@435 | 730 | 1 << Assembler::sth_op3 | |
duke@435 | 731 | 1 << Assembler::std_op3 | |
duke@435 | 732 | 1 << Assembler::stx_op3, |
duke@435 | 733 | op3_ldst_int_limit = Assembler::ldf_op3, |
duke@435 | 734 | op3_mask_ldf = 1 << (Assembler::ldf_op3 - op3_ldst_int_limit) | |
duke@435 | 735 | 1 << (Assembler::lddf_op3 - op3_ldst_int_limit), |
duke@435 | 736 | op3_mask_stf = 1 << (Assembler::stf_op3 - op3_ldst_int_limit) | |
duke@435 | 737 | 1 << (Assembler::stdf_op3 - op3_ldst_int_limit), |
duke@435 | 738 | |
duke@435 | 739 | offset_width = 13, |
duke@435 | 740 | sethi_offset = 0, |
duke@435 | 741 | #ifdef _LP64 |
duke@435 | 742 | nop_offset = 7 * BytesPerInstWord, |
duke@435 | 743 | #else |
duke@435 | 744 | nop_offset = 4, |
duke@435 | 745 | #endif |
duke@435 | 746 | add_offset = nop_offset + BytesPerInstWord, |
duke@435 | 747 | ldst_offset = add_offset + BytesPerInstWord |
duke@435 | 748 | }; |
duke@435 | 749 | bool is_immediate() const { |
duke@435 | 750 | // check if instruction is ld* [reg + offset], reg or st* reg, [reg + offset] |
duke@435 | 751 | int i0 = long_at(0); |
duke@435 | 752 | return (is_op(i0, Assembler::ldst_op)); |
duke@435 | 753 | } |
duke@435 | 754 | |
duke@435 | 755 | address instruction_address() const { return addr_at(0); } |
duke@435 | 756 | address next_instruction_address() const { |
duke@435 | 757 | return addr_at(is_immediate()? 4 : 16); |
duke@435 | 758 | } |
duke@435 | 759 | int offset() const { |
duke@435 | 760 | return is_immediate()? inv_simm(long_at(0), offset_width) : |
duke@435 | 761 | nativeMovConstRegPatching_at(addr_at(0))->data(); |
duke@435 | 762 | } |
duke@435 | 763 | void set_offset(int x) { |
duke@435 | 764 | if (is_immediate()) { |
duke@435 | 765 | guarantee(fits_in_simm(x, offset_width), "data block offset overflow"); |
duke@435 | 766 | set_long_at(0, set_simm(long_at(0), x, offset_width)); |
duke@435 | 767 | } |
duke@435 | 768 | else |
duke@435 | 769 | nativeMovConstRegPatching_at(addr_at(0))->set_data(x); |
duke@435 | 770 | } |
duke@435 | 771 | |
duke@435 | 772 | void add_offset_in_bytes(intptr_t radd_offset) { |
duke@435 | 773 | set_offset (offset() + radd_offset); |
duke@435 | 774 | } |
duke@435 | 775 | |
duke@435 | 776 | void copy_instruction_to(address new_instruction_address); |
duke@435 | 777 | |
duke@435 | 778 | void verify(); |
duke@435 | 779 | void print (); |
duke@435 | 780 | |
duke@435 | 781 | // unit test stuff |
duke@435 | 782 | static void test(); |
duke@435 | 783 | |
duke@435 | 784 | private: |
duke@435 | 785 | friend inline NativeMovRegMemPatching* nativeMovRegMemPatching_at (address address) { |
duke@435 | 786 | NativeMovRegMemPatching* test = (NativeMovRegMemPatching*)address; |
duke@435 | 787 | #ifdef ASSERT |
duke@435 | 788 | test->verify(); |
duke@435 | 789 | #endif |
duke@435 | 790 | return test; |
duke@435 | 791 | } |
duke@435 | 792 | }; |
duke@435 | 793 | |
duke@435 | 794 | |
duke@435 | 795 | // An interface for accessing/manipulating native jumps |
duke@435 | 796 | // jump_to addr |
duke@435 | 797 | // == sethi %hi22(addr), temp ; jumpl reg, %lo10(addr), G0 ; <delay> |
duke@435 | 798 | // jumpl_to addr, lreg |
duke@435 | 799 | // == sethi %hi22(addr), temp ; jumpl reg, %lo10(addr), lreg ; <delay> |
duke@435 | 800 | class NativeJump; |
duke@435 | 801 | inline NativeJump* nativeJump_at(address address); |
duke@435 | 802 | class NativeJump: public NativeInstruction { |
duke@435 | 803 | private: |
duke@435 | 804 | void guarantee_displacement(int disp, int width) { |
duke@435 | 805 | guarantee(fits_in_simm(disp, width + 2), "branch displacement overflow"); |
duke@435 | 806 | } |
duke@435 | 807 | |
duke@435 | 808 | public: |
duke@435 | 809 | enum Sparc_specific_constants { |
duke@435 | 810 | sethi_offset = 0, |
duke@435 | 811 | #ifdef _LP64 |
duke@435 | 812 | jmpl_offset = 7 * BytesPerInstWord, |
duke@435 | 813 | instruction_size = 9 * BytesPerInstWord // includes delay slot |
duke@435 | 814 | #else |
duke@435 | 815 | jmpl_offset = 1 * BytesPerInstWord, |
duke@435 | 816 | instruction_size = 3 * BytesPerInstWord // includes delay slot |
duke@435 | 817 | #endif |
duke@435 | 818 | }; |
duke@435 | 819 | |
duke@435 | 820 | address instruction_address() const { return addr_at(0); } |
duke@435 | 821 | address next_instruction_address() const { return addr_at(instruction_size); } |
duke@435 | 822 | |
duke@435 | 823 | #ifdef _LP64 |
duke@435 | 824 | address jump_destination() const { |
duke@435 | 825 | return (address) data64(instruction_address(), long_at(jmpl_offset)); |
duke@435 | 826 | } |
duke@435 | 827 | void set_jump_destination(address dest) { |
duke@435 | 828 | set_data64_sethi( instruction_address(), (intptr_t)dest); |
duke@435 | 829 | set_long_at(jmpl_offset, set_data32_simm13( long_at(jmpl_offset), (intptr_t)dest)); |
duke@435 | 830 | } |
duke@435 | 831 | #else |
duke@435 | 832 | address jump_destination() const { |
duke@435 | 833 | return (address) data32(long_at(sethi_offset), long_at(jmpl_offset)); |
duke@435 | 834 | } |
duke@435 | 835 | void set_jump_destination(address dest) { |
duke@435 | 836 | set_long_at(sethi_offset, set_data32_sethi( long_at(sethi_offset), (intptr_t)dest)); |
duke@435 | 837 | set_long_at(jmpl_offset, set_data32_simm13( long_at(jmpl_offset), (intptr_t)dest)); |
duke@435 | 838 | } |
duke@435 | 839 | #endif |
duke@435 | 840 | |
duke@435 | 841 | // Creation |
duke@435 | 842 | friend inline NativeJump* nativeJump_at(address address) { |
duke@435 | 843 | NativeJump* jump = (NativeJump*)address; |
duke@435 | 844 | #ifdef ASSERT |
duke@435 | 845 | jump->verify(); |
duke@435 | 846 | #endif |
duke@435 | 847 | return jump; |
duke@435 | 848 | } |
duke@435 | 849 | |
duke@435 | 850 | void verify(); |
duke@435 | 851 | void print(); |
duke@435 | 852 | |
duke@435 | 853 | // Unit testing stuff |
duke@435 | 854 | static void test(); |
duke@435 | 855 | |
duke@435 | 856 | // Insertion of native jump instruction |
duke@435 | 857 | static void insert(address code_pos, address entry); |
duke@435 | 858 | // MT-safe insertion of native jump at verified method entry |
duke@435 | 859 | static void check_verified_entry_alignment(address entry, address verified_entry) { |
duke@435 | 860 | // nothing to do for sparc. |
duke@435 | 861 | } |
duke@435 | 862 | static void patch_verified_entry(address entry, address verified_entry, address dest); |
duke@435 | 863 | }; |
duke@435 | 864 | |
duke@435 | 865 | |
duke@435 | 866 | |
duke@435 | 867 | // Despite the name, handles only simple branches. |
duke@435 | 868 | class NativeGeneralJump; |
duke@435 | 869 | inline NativeGeneralJump* nativeGeneralJump_at(address address); |
duke@435 | 870 | class NativeGeneralJump: public NativeInstruction { |
duke@435 | 871 | public: |
duke@435 | 872 | enum Sparc_specific_constants { |
duke@435 | 873 | instruction_size = 8 |
duke@435 | 874 | }; |
duke@435 | 875 | |
duke@435 | 876 | address instruction_address() const { return addr_at(0); } |
duke@435 | 877 | address jump_destination() const { return addr_at(0) + branch_destination_offset(long_at(0)); } |
duke@435 | 878 | void set_jump_destination(address dest) { |
duke@435 | 879 | int patched_instr = patch_branch_destination_offset(dest - addr_at(0), long_at(0)); |
duke@435 | 880 | set_long_at(0, patched_instr); |
duke@435 | 881 | } |
duke@435 | 882 | void set_annul() { set_annul_bit(); } |
duke@435 | 883 | NativeInstruction *delay_slot_instr() { return nativeInstruction_at(addr_at(4));} |
duke@435 | 884 | void fill_delay_slot(int instr) { set_long_at(4, instr);} |
duke@435 | 885 | Assembler::Condition condition() { |
duke@435 | 886 | int x = long_at(0); |
duke@435 | 887 | return (Assembler::Condition) Assembler::inv_cond(x); |
duke@435 | 888 | } |
duke@435 | 889 | |
duke@435 | 890 | // Creation |
duke@435 | 891 | friend inline NativeGeneralJump* nativeGeneralJump_at(address address) { |
duke@435 | 892 | NativeGeneralJump* jump = (NativeGeneralJump*)(address); |
duke@435 | 893 | #ifdef ASSERT |
duke@435 | 894 | jump->verify(); |
duke@435 | 895 | #endif |
duke@435 | 896 | return jump; |
duke@435 | 897 | } |
duke@435 | 898 | |
duke@435 | 899 | // Insertion of native general jump instruction |
duke@435 | 900 | static void insert_unconditional(address code_pos, address entry); |
duke@435 | 901 | static void replace_mt_safe(address instr_addr, address code_buffer); |
duke@435 | 902 | |
duke@435 | 903 | void verify(); |
duke@435 | 904 | }; |
duke@435 | 905 | |
duke@435 | 906 | |
duke@435 | 907 | class NativeIllegalInstruction: public NativeInstruction { |
duke@435 | 908 | public: |
duke@435 | 909 | enum Sparc_specific_constants { |
duke@435 | 910 | instruction_size = 4 |
duke@435 | 911 | }; |
duke@435 | 912 | |
duke@435 | 913 | // Insert illegal opcode as specific address |
duke@435 | 914 | static void insert(address code_pos); |
duke@435 | 915 | }; |