1 //===------------- OrcABISupport.cpp - ABI specific support code ----------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "llvm/ExecutionEngine/Orc/OrcABISupport.h" 10 #include "llvm/Support/FormatVariadic.h" 11 #include "llvm/Support/Process.h" 12 #include "llvm/Support/raw_ostream.h" 13 14 #define DEBUG_TYPE "orc" 15 16 using namespace llvm; 17 using namespace llvm::orc; 18 19 template <typename ORCABI> 20 static bool stubAndPointerRangesOk(ExecutorAddr StubBlockAddr, 21 ExecutorAddr PointerBlockAddr, 22 unsigned NumStubs) { 23 constexpr unsigned MaxDisp = ORCABI::StubToPointerMaxDisplacement; 24 ExecutorAddr FirstStub = StubBlockAddr; 25 ExecutorAddr LastStub = FirstStub + ((NumStubs - 1) * ORCABI::StubSize); 26 ExecutorAddr FirstPointer = PointerBlockAddr; 27 ExecutorAddr LastPointer = FirstPointer + ((NumStubs - 1) * ORCABI::StubSize); 28 29 if (FirstStub < FirstPointer) { 30 if (LastStub >= FirstPointer) 31 return false; // Ranges overlap. 32 return (FirstPointer - FirstStub <= MaxDisp) && 33 (LastPointer - LastStub <= MaxDisp); // out-of-range. 34 } 35 36 if (LastPointer >= FirstStub) 37 return false; // Ranges overlap. 38 39 return (FirstStub - FirstPointer <= MaxDisp) && 40 (LastStub - LastPointer <= MaxDisp); 41 } 42 43 namespace llvm { 44 namespace orc { 45 46 void OrcAArch64::writeResolverCode(char *ResolverWorkingMem, 47 ExecutorAddr ResolverTargetAddress, 48 ExecutorAddr ReentryFnAddr, 49 ExecutorAddr ReentryCtxAddr) { 50 51 const uint32_t ResolverCode[] = { 52 // resolver_entry: 53 0xa9bf47fd, // 0x000: stp x29, x17, [sp, #-16]! 54 0x910003fd, // 0x004: mov x29, sp 55 0xa9bf73fb, // 0x008: stp x27, x28, [sp, #-16]! 56 0xa9bf6bf9, // 0x00c: stp x25, x26, [sp, #-16]! 57 0xa9bf63f7, // 0x010: stp x23, x24, [sp, #-16]! 58 0xa9bf5bf5, // 0x014: stp x21, x22, [sp, #-16]! 59 0xa9bf53f3, // 0x018: stp x19, x20, [sp, #-16]! 60 0xa9bf3fee, // 0x01c: stp x14, x15, [sp, #-16]! 61 0xa9bf37ec, // 0x020: stp x12, x13, [sp, #-16]! 62 0xa9bf2fea, // 0x024: stp x10, x11, [sp, #-16]! 63 0xa9bf27e8, // 0x028: stp x8, x9, [sp, #-16]! 64 0xa9bf1fe6, // 0x02c: stp x6, x7, [sp, #-16]! 65 0xa9bf17e4, // 0x030: stp x4, x5, [sp, #-16]! 66 0xa9bf0fe2, // 0x034: stp x2, x3, [sp, #-16]! 67 0xa9bf07e0, // 0x038: stp x0, x1, [sp, #-16]! 68 0xadbf7ffe, // 0x03c: stp q30, q31, [sp, #-32]! 69 0xadbf77fc, // 0x040: stp q28, q29, [sp, #-32]! 70 0xadbf6ffa, // 0x044: stp q26, q27, [sp, #-32]! 71 0xadbf67f8, // 0x048: stp q24, q25, [sp, #-32]! 72 0xadbf5ff6, // 0x04c: stp q22, q23, [sp, #-32]! 73 0xadbf57f4, // 0x050: stp q20, q21, [sp, #-32]! 74 0xadbf4ff2, // 0x054: stp q18, q19, [sp, #-32]! 75 0xadbf47f0, // 0x058: stp q16, q17, [sp, #-32]! 76 0xadbf3fee, // 0x05c: stp q14, q15, [sp, #-32]! 77 0xadbf37ec, // 0x060: stp q12, q13, [sp, #-32]! 78 0xadbf2fea, // 0x064: stp q10, q11, [sp, #-32]! 79 0xadbf27e8, // 0x068: stp q8, q9, [sp, #-32]! 80 0xadbf1fe6, // 0x06c: stp q6, q7, [sp, #-32]! 81 0xadbf17e4, // 0x070: stp q4, q5, [sp, #-32]! 82 0xadbf0fe2, // 0x074: stp q2, q3, [sp, #-32]! 83 0xadbf07e0, // 0x078: stp q0, q1, [sp, #-32]! 84 0x580004e0, // 0x07c: ldr x0, Lreentry_ctx_ptr 85 0xaa1e03e1, // 0x080: mov x1, x30 86 0xd1003021, // 0x084: sub x1, x1, #12 87 0x58000442, // 0x088: ldr x2, Lreentry_fn_ptr 88 0xd63f0040, // 0x08c: blr x2 89 0xaa0003f1, // 0x090: mov x17, x0 90 0xacc107e0, // 0x094: ldp q0, q1, [sp], #32 91 0xacc10fe2, // 0x098: ldp q2, q3, [sp], #32 92 0xacc117e4, // 0x09c: ldp q4, q5, [sp], #32 93 0xacc11fe6, // 0x0a0: ldp q6, q7, [sp], #32 94 0xacc127e8, // 0x0a4: ldp q8, q9, [sp], #32 95 0xacc12fea, // 0x0a8: ldp q10, q11, [sp], #32 96 0xacc137ec, // 0x0ac: ldp q12, q13, [sp], #32 97 0xacc13fee, // 0x0b0: ldp q14, q15, [sp], #32 98 0xacc147f0, // 0x0b4: ldp q16, q17, [sp], #32 99 0xacc14ff2, // 0x0b8: ldp q18, q19, [sp], #32 100 0xacc157f4, // 0x0bc: ldp q20, q21, [sp], #32 101 0xacc15ff6, // 0x0c0: ldp q22, q23, [sp], #32 102 0xacc167f8, // 0x0c4: ldp q24, q25, [sp], #32 103 0xacc16ffa, // 0x0c8: ldp q26, q27, [sp], #32 104 0xacc177fc, // 0x0cc: ldp q28, q29, [sp], #32 105 0xacc17ffe, // 0x0d0: ldp q30, q31, [sp], #32 106 0xa8c107e0, // 0x0d4: ldp x0, x1, [sp], #16 107 0xa8c10fe2, // 0x0d8: ldp x2, x3, [sp], #16 108 0xa8c117e4, // 0x0dc: ldp x4, x5, [sp], #16 109 0xa8c11fe6, // 0x0e0: ldp x6, x7, [sp], #16 110 0xa8c127e8, // 0x0e4: ldp x8, x9, [sp], #16 111 0xa8c12fea, // 0x0e8: ldp x10, x11, [sp], #16 112 0xa8c137ec, // 0x0ec: ldp x12, x13, [sp], #16 113 0xa8c13fee, // 0x0f0: ldp x14, x15, [sp], #16 114 0xa8c153f3, // 0x0f4: ldp x19, x20, [sp], #16 115 0xa8c15bf5, // 0x0f8: ldp x21, x22, [sp], #16 116 0xa8c163f7, // 0x0fc: ldp x23, x24, [sp], #16 117 0xa8c16bf9, // 0x100: ldp x25, x26, [sp], #16 118 0xa8c173fb, // 0x104: ldp x27, x28, [sp], #16 119 0xa8c17bfd, // 0x108: ldp x29, x30, [sp], #16 120 0xd65f0220, // 0x10c: ret x17 121 0x01234567, // 0x110: Lreentry_fn_ptr: 122 0xdeadbeef, // 0x114: .quad 0 123 0x98765432, // 0x118: Lreentry_ctx_ptr: 124 0xcafef00d // 0x11c: .quad 0 125 }; 126 127 const unsigned ReentryFnAddrOffset = 0x110; 128 const unsigned ReentryCtxAddrOffset = 0x118; 129 130 memcpy(ResolverWorkingMem, ResolverCode, sizeof(ResolverCode)); 131 memcpy(ResolverWorkingMem + ReentryFnAddrOffset, &ReentryFnAddr, 132 sizeof(uint64_t)); 133 memcpy(ResolverWorkingMem + ReentryCtxAddrOffset, &ReentryCtxAddr, 134 sizeof(uint64_t)); 135 } 136 137 void OrcAArch64::writeTrampolines(char *TrampolineBlockWorkingMem, 138 ExecutorAddr TrampolineBlockTargetAddress, 139 ExecutorAddr ResolverAddr, 140 unsigned NumTrampolines) { 141 142 unsigned OffsetToPtr = alignTo(NumTrampolines * TrampolineSize, 8); 143 144 memcpy(TrampolineBlockWorkingMem + OffsetToPtr, &ResolverAddr, 145 sizeof(uint64_t)); 146 147 // OffsetToPtr is actually the offset from the PC for the 2nd instruction, so 148 // subtract 32-bits. 149 OffsetToPtr -= 4; 150 151 uint32_t *Trampolines = 152 reinterpret_cast<uint32_t *>(TrampolineBlockWorkingMem); 153 154 for (unsigned I = 0; I < NumTrampolines; ++I, OffsetToPtr -= TrampolineSize) { 155 Trampolines[3 * I + 0] = 0xaa1e03f1; // mov x17, x30 156 Trampolines[3 * I + 1] = 0x58000010 | (OffsetToPtr << 3); // adr x16, Lptr 157 Trampolines[3 * I + 2] = 0xd63f0200; // blr x16 158 } 159 } 160 161 void OrcAArch64::writeIndirectStubsBlock( 162 char *StubsBlockWorkingMem, ExecutorAddr StubsBlockTargetAddress, 163 ExecutorAddr PointersBlockTargetAddress, unsigned NumStubs) { 164 // Stub format is: 165 // 166 // .section __orc_stubs 167 // stub1: 168 // ldr x16, ptr1 ; PC-rel load of ptr1 169 // br x16 ; Jump to resolver 170 // stub2: 171 // ldr x16, ptr2 ; PC-rel load of ptr2 172 // br x16 ; Jump to resolver 173 // 174 // ... 175 // 176 // .section __orc_ptrs 177 // ptr1: 178 // .quad 0x0 179 // ptr2: 180 // .quad 0x0 181 // 182 // ... 183 184 static_assert(StubSize == PointerSize, 185 "Pointer and stub size must match for algorithm below"); 186 assert(stubAndPointerRangesOk<OrcAArch64>( 187 StubsBlockTargetAddress, PointersBlockTargetAddress, NumStubs) && 188 "PointersBlock is out of range"); 189 uint64_t PtrDisplacement = 190 PointersBlockTargetAddress - StubsBlockTargetAddress; 191 assert((PtrDisplacement % 8 == 0) && 192 "Displacement to pointer is not a multiple of 8"); 193 uint64_t *Stub = reinterpret_cast<uint64_t *>(StubsBlockWorkingMem); 194 uint64_t PtrOffsetField = ((PtrDisplacement >> 2) & 0x7ffff) << 5; 195 196 for (unsigned I = 0; I < NumStubs; ++I) 197 Stub[I] = 0xd61f020058000010 | PtrOffsetField; 198 } 199 200 void OrcX86_64_Base::writeTrampolines(char *TrampolineBlockWorkingMem, 201 ExecutorAddr TrampolineBlockTargetAddress, 202 ExecutorAddr ResolverAddr, 203 unsigned NumTrampolines) { 204 205 unsigned OffsetToPtr = NumTrampolines * TrampolineSize; 206 207 memcpy(TrampolineBlockWorkingMem + OffsetToPtr, &ResolverAddr, 208 sizeof(uint64_t)); 209 210 uint64_t *Trampolines = 211 reinterpret_cast<uint64_t *>(TrampolineBlockWorkingMem); 212 uint64_t CallIndirPCRel = 0xf1c40000000015ff; 213 214 for (unsigned I = 0; I < NumTrampolines; ++I, OffsetToPtr -= TrampolineSize) 215 Trampolines[I] = CallIndirPCRel | ((OffsetToPtr - 6) << 16); 216 } 217 218 void OrcX86_64_Base::writeIndirectStubsBlock( 219 char *StubsBlockWorkingMem, ExecutorAddr StubsBlockTargetAddress, 220 ExecutorAddr PointersBlockTargetAddress, unsigned NumStubs) { 221 // Stub format is: 222 // 223 // .section __orc_stubs 224 // stub1: 225 // jmpq *ptr1(%rip) 226 // .byte 0xC4 ; <- Invalid opcode padding. 227 // .byte 0xF1 228 // stub2: 229 // jmpq *ptr2(%rip) 230 // 231 // ... 232 // 233 // .section __orc_ptrs 234 // ptr1: 235 // .quad 0x0 236 // ptr2: 237 // .quad 0x0 238 // 239 // ... 240 241 // Populate the stubs page stubs and mark it executable. 242 static_assert(StubSize == PointerSize, 243 "Pointer and stub size must match for algorithm below"); 244 assert(stubAndPointerRangesOk<OrcX86_64_Base>( 245 StubsBlockTargetAddress, PointersBlockTargetAddress, NumStubs) && 246 "PointersBlock is out of range"); 247 uint64_t *Stub = reinterpret_cast<uint64_t *>(StubsBlockWorkingMem); 248 uint64_t PtrOffsetField = 249 (PointersBlockTargetAddress - StubsBlockTargetAddress - 6) << 16; 250 for (unsigned I = 0; I < NumStubs; ++I) 251 Stub[I] = 0xF1C40000000025ff | PtrOffsetField; 252 } 253 254 void OrcX86_64_SysV::writeResolverCode(char *ResolverWorkingMem, 255 ExecutorAddr ResolverTargetAddress, 256 ExecutorAddr ReentryFnAddr, 257 ExecutorAddr ReentryCtxAddr) { 258 259 LLVM_DEBUG({ 260 dbgs() << "Writing resolver code to " 261 << formatv("{0:x16}", ResolverTargetAddress) << "\n"; 262 }); 263 264 const uint8_t ResolverCode[] = { 265 // resolver_entry: 266 0x55, // 0x00: pushq %rbp 267 0x48, 0x89, 0xe5, // 0x01: movq %rsp, %rbp 268 0x50, // 0x04: pushq %rax 269 0x53, // 0x05: pushq %rbx 270 0x51, // 0x06: pushq %rcx 271 0x52, // 0x07: pushq %rdx 272 0x56, // 0x08: pushq %rsi 273 0x57, // 0x09: pushq %rdi 274 0x41, 0x50, // 0x0a: pushq %r8 275 0x41, 0x51, // 0x0c: pushq %r9 276 0x41, 0x52, // 0x0e: pushq %r10 277 0x41, 0x53, // 0x10: pushq %r11 278 0x41, 0x54, // 0x12: pushq %r12 279 0x41, 0x55, // 0x14: pushq %r13 280 0x41, 0x56, // 0x16: pushq %r14 281 0x41, 0x57, // 0x18: pushq %r15 282 0x48, 0x81, 0xec, 0x08, 0x02, 0x00, 0x00, // 0x1a: subq 0x208, %rsp 283 0x48, 0x0f, 0xae, 0x04, 0x24, // 0x21: fxsave64 (%rsp) 284 0x48, 0xbf, // 0x26: movabsq <CBMgr>, %rdi 285 286 // 0x28: JIT re-entry ctx addr. 287 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 288 289 0x48, 0x8b, 0x75, 0x08, // 0x30: movq 8(%rbp), %rsi 290 0x48, 0x83, 0xee, 0x06, // 0x34: subq $6, %rsi 291 0x48, 0xb8, // 0x38: movabsq <REntry>, %rax 292 293 // 0x3a: JIT re-entry fn addr: 294 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 295 296 0xff, 0xd0, // 0x42: callq *%rax 297 0x48, 0x89, 0x45, 0x08, // 0x44: movq %rax, 8(%rbp) 298 0x48, 0x0f, 0xae, 0x0c, 0x24, // 0x48: fxrstor64 (%rsp) 299 0x48, 0x81, 0xc4, 0x08, 0x02, 0x00, 0x00, // 0x4d: addq 0x208, %rsp 300 0x41, 0x5f, // 0x54: popq %r15 301 0x41, 0x5e, // 0x56: popq %r14 302 0x41, 0x5d, // 0x58: popq %r13 303 0x41, 0x5c, // 0x5a: popq %r12 304 0x41, 0x5b, // 0x5c: popq %r11 305 0x41, 0x5a, // 0x5e: popq %r10 306 0x41, 0x59, // 0x60: popq %r9 307 0x41, 0x58, // 0x62: popq %r8 308 0x5f, // 0x64: popq %rdi 309 0x5e, // 0x65: popq %rsi 310 0x5a, // 0x66: popq %rdx 311 0x59, // 0x67: popq %rcx 312 0x5b, // 0x68: popq %rbx 313 0x58, // 0x69: popq %rax 314 0x5d, // 0x6a: popq %rbp 315 0xc3, // 0x6b: retq 316 }; 317 318 const unsigned ReentryFnAddrOffset = 0x3a; 319 const unsigned ReentryCtxAddrOffset = 0x28; 320 321 memcpy(ResolverWorkingMem, ResolverCode, sizeof(ResolverCode)); 322 memcpy(ResolverWorkingMem + ReentryFnAddrOffset, &ReentryFnAddr, 323 sizeof(uint64_t)); 324 memcpy(ResolverWorkingMem + ReentryCtxAddrOffset, &ReentryCtxAddr, 325 sizeof(uint64_t)); 326 } 327 328 void OrcX86_64_Win32::writeResolverCode(char *ResolverWorkingMem, 329 ExecutorAddr ResolverTargetAddress, 330 ExecutorAddr ReentryFnAddr, 331 ExecutorAddr ReentryCtxAddr) { 332 333 // resolverCode is similar to OrcX86_64 with differences specific to windows 334 // x64 calling convention: arguments go into rcx, rdx and come in reverse 335 // order, shadow space allocation on stack 336 const uint8_t ResolverCode[] = { 337 // resolver_entry: 338 0x55, // 0x00: pushq %rbp 339 0x48, 0x89, 0xe5, // 0x01: movq %rsp, %rbp 340 0x50, // 0x04: pushq %rax 341 0x53, // 0x05: pushq %rbx 342 0x51, // 0x06: pushq %rcx 343 0x52, // 0x07: pushq %rdx 344 0x56, // 0x08: pushq %rsi 345 0x57, // 0x09: pushq %rdi 346 0x41, 0x50, // 0x0a: pushq %r8 347 0x41, 0x51, // 0x0c: pushq %r9 348 0x41, 0x52, // 0x0e: pushq %r10 349 0x41, 0x53, // 0x10: pushq %r11 350 0x41, 0x54, // 0x12: pushq %r12 351 0x41, 0x55, // 0x14: pushq %r13 352 0x41, 0x56, // 0x16: pushq %r14 353 0x41, 0x57, // 0x18: pushq %r15 354 0x48, 0x81, 0xec, 0x08, 0x02, 0x00, 0x00, // 0x1a: subq 0x208, %rsp 355 0x48, 0x0f, 0xae, 0x04, 0x24, // 0x21: fxsave64 (%rsp) 356 357 0x48, 0xb9, // 0x26: movabsq <CBMgr>, %rcx 358 // 0x28: JIT re-entry ctx addr. 359 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 360 361 0x48, 0x8B, 0x55, 0x08, // 0x30: mov rdx, [rbp+0x8] 362 0x48, 0x83, 0xea, 0x06, // 0x34: sub rdx, 0x6 363 364 0x48, 0xb8, // 0x38: movabsq <REntry>, %rax 365 // 0x3a: JIT re-entry fn addr: 366 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 367 368 // 0x42: sub rsp, 0x20 (Allocate shadow space) 369 0x48, 0x83, 0xEC, 0x20, 370 0xff, 0xd0, // 0x46: callq *%rax 371 372 // 0x48: add rsp, 0x20 (Free shadow space) 373 0x48, 0x83, 0xC4, 0x20, 374 375 0x48, 0x89, 0x45, 0x08, // 0x4C: movq %rax, 8(%rbp) 376 0x48, 0x0f, 0xae, 0x0c, 0x24, // 0x50: fxrstor64 (%rsp) 377 0x48, 0x81, 0xc4, 0x08, 0x02, 0x00, 0x00, // 0x55: addq 0x208, %rsp 378 0x41, 0x5f, // 0x5C: popq %r15 379 0x41, 0x5e, // 0x5E: popq %r14 380 0x41, 0x5d, // 0x60: popq %r13 381 0x41, 0x5c, // 0x62: popq %r12 382 0x41, 0x5b, // 0x64: popq %r11 383 0x41, 0x5a, // 0x66: popq %r10 384 0x41, 0x59, // 0x68: popq %r9 385 0x41, 0x58, // 0x6a: popq %r8 386 0x5f, // 0x6c: popq %rdi 387 0x5e, // 0x6d: popq %rsi 388 0x5a, // 0x6e: popq %rdx 389 0x59, // 0x6f: popq %rcx 390 0x5b, // 0x70: popq %rbx 391 0x58, // 0x71: popq %rax 392 0x5d, // 0x72: popq %rbp 393 0xc3, // 0x73: retq 394 }; 395 396 const unsigned ReentryFnAddrOffset = 0x3a; 397 const unsigned ReentryCtxAddrOffset = 0x28; 398 399 memcpy(ResolverWorkingMem, ResolverCode, sizeof(ResolverCode)); 400 memcpy(ResolverWorkingMem + ReentryFnAddrOffset, &ReentryFnAddr, 401 sizeof(uint64_t)); 402 memcpy(ResolverWorkingMem + ReentryCtxAddrOffset, &ReentryCtxAddr, 403 sizeof(uint64_t)); 404 } 405 406 void OrcI386::writeResolverCode(char *ResolverWorkingMem, 407 ExecutorAddr ResolverTargetAddress, 408 ExecutorAddr ReentryFnAddr, 409 ExecutorAddr ReentryCtxAddr) { 410 411 assert((ReentryFnAddr.getValue() >> 32) == 0 && "ReentryFnAddr out of range"); 412 assert((ReentryCtxAddr.getValue() >> 32) == 0 && 413 "ReentryCtxAddr out of range"); 414 415 const uint8_t ResolverCode[] = { 416 // resolver_entry: 417 0x55, // 0x00: pushl %ebp 418 0x89, 0xe5, // 0x01: movl %esp, %ebp 419 0x54, // 0x03: pushl %esp 420 0x83, 0xe4, 0xf0, // 0x04: andl $-0x10, %esp 421 0x50, // 0x07: pushl %eax 422 0x53, // 0x08: pushl %ebx 423 0x51, // 0x09: pushl %ecx 424 0x52, // 0x0a: pushl %edx 425 0x56, // 0x0b: pushl %esi 426 0x57, // 0x0c: pushl %edi 427 0x81, 0xec, 0x18, 0x02, 0x00, 0x00, // 0x0d: subl $0x218, %esp 428 0x0f, 0xae, 0x44, 0x24, 0x10, // 0x13: fxsave 0x10(%esp) 429 0x8b, 0x75, 0x04, // 0x18: movl 0x4(%ebp), %esi 430 0x83, 0xee, 0x05, // 0x1b: subl $0x5, %esi 431 0x89, 0x74, 0x24, 0x04, // 0x1e: movl %esi, 0x4(%esp) 432 0xc7, 0x04, 0x24, 0x00, 0x00, 0x00, 433 0x00, // 0x22: movl <cbmgr>, (%esp) 434 0xb8, 0x00, 0x00, 0x00, 0x00, // 0x29: movl <reentry>, %eax 435 0xff, 0xd0, // 0x2e: calll *%eax 436 0x89, 0x45, 0x04, // 0x30: movl %eax, 0x4(%ebp) 437 0x0f, 0xae, 0x4c, 0x24, 0x10, // 0x33: fxrstor 0x10(%esp) 438 0x81, 0xc4, 0x18, 0x02, 0x00, 0x00, // 0x38: addl $0x218, %esp 439 0x5f, // 0x3e: popl %edi 440 0x5e, // 0x3f: popl %esi 441 0x5a, // 0x40: popl %edx 442 0x59, // 0x41: popl %ecx 443 0x5b, // 0x42: popl %ebx 444 0x58, // 0x43: popl %eax 445 0x8b, 0x65, 0xfc, // 0x44: movl -0x4(%ebp), %esp 446 0x5d, // 0x48: popl %ebp 447 0xc3 // 0x49: retl 448 }; 449 450 const unsigned ReentryFnAddrOffset = 0x2a; 451 const unsigned ReentryCtxAddrOffset = 0x25; 452 453 memcpy(ResolverWorkingMem, ResolverCode, sizeof(ResolverCode)); 454 memcpy(ResolverWorkingMem + ReentryFnAddrOffset, &ReentryFnAddr, 455 sizeof(uint32_t)); 456 memcpy(ResolverWorkingMem + ReentryCtxAddrOffset, &ReentryCtxAddr, 457 sizeof(uint32_t)); 458 } 459 460 void OrcI386::writeTrampolines(char *TrampolineWorkingMem, 461 ExecutorAddr TrampolineBlockTargetAddress, 462 ExecutorAddr ResolverAddr, 463 unsigned NumTrampolines) { 464 assert((ResolverAddr.getValue() >> 32) == 0 && "ResolverAddr out of range"); 465 466 uint64_t CallRelImm = 0xF1C4C400000000e8; 467 uint64_t ResolverRel = ResolverAddr - TrampolineBlockTargetAddress - 5; 468 469 uint64_t *Trampolines = reinterpret_cast<uint64_t *>(TrampolineWorkingMem); 470 for (unsigned I = 0; I < NumTrampolines; ++I, ResolverRel -= TrampolineSize) 471 Trampolines[I] = CallRelImm | (ResolverRel << 8); 472 } 473 474 void OrcI386::writeIndirectStubsBlock(char *StubsBlockWorkingMem, 475 ExecutorAddr StubsBlockTargetAddress, 476 ExecutorAddr PointersBlockTargetAddress, 477 unsigned NumStubs) { 478 assert((StubsBlockTargetAddress.getValue() >> 32) == 0 && 479 "StubsBlockTargetAddress is out of range"); 480 assert((PointersBlockTargetAddress.getValue() >> 32) == 0 && 481 "PointersBlockTargetAddress is out of range"); 482 483 // Stub format is: 484 // 485 // .section __orc_stubs 486 // stub1: 487 // jmpq *ptr1 488 // .byte 0xC4 ; <- Invalid opcode padding. 489 // .byte 0xF1 490 // stub2: 491 // jmpq *ptr2 492 // 493 // ... 494 // 495 // .section __orc_ptrs 496 // ptr1: 497 // .quad 0x0 498 // ptr2: 499 // .quad 0x0 500 // 501 // ... 502 503 assert(stubAndPointerRangesOk<OrcI386>( 504 StubsBlockTargetAddress, PointersBlockTargetAddress, NumStubs) && 505 "PointersBlock is out of range"); 506 507 uint64_t *Stub = reinterpret_cast<uint64_t *>(StubsBlockWorkingMem); 508 uint64_t PtrAddr = PointersBlockTargetAddress.getValue(); 509 for (unsigned I = 0; I < NumStubs; ++I, PtrAddr += 4) 510 Stub[I] = 0xF1C40000000025ff | (PtrAddr << 16); 511 } 512 513 void OrcMips32_Base::writeResolverCode(char *ResolverWorkingMem, 514 ExecutorAddr ResolverTargetAddress, 515 ExecutorAddr ReentryFnAddr, 516 ExecutorAddr ReentryCtxAddr, 517 bool isBigEndian) { 518 519 const uint32_t ResolverCode[] = { 520 // resolver_entry: 521 0x27bdff98, // 0x00: addiu $sp,$sp,-104 522 0xafa20000, // 0x04: sw $v0,0($sp) 523 0xafa30004, // 0x08: sw $v1,4($sp) 524 0xafa40008, // 0x0c: sw $a0,8($sp) 525 0xafa5000c, // 0x10: sw $a1,12($sp) 526 0xafa60010, // 0x14: sw $a2,16($sp) 527 0xafa70014, // 0x18: sw $a3,20($sp) 528 0xafb00018, // 0x1c: sw $s0,24($sp) 529 0xafb1001c, // 0x20: sw $s1,28($sp) 530 0xafb20020, // 0x24: sw $s2,32($sp) 531 0xafb30024, // 0x28: sw $s3,36($sp) 532 0xafb40028, // 0x2c: sw $s4,40($sp) 533 0xafb5002c, // 0x30: sw $s5,44($sp) 534 0xafb60030, // 0x34: sw $s6,48($sp) 535 0xafb70034, // 0x38: sw $s7,52($sp) 536 0xafa80038, // 0x3c: sw $t0,56($sp) 537 0xafa9003c, // 0x40: sw $t1,60($sp) 538 0xafaa0040, // 0x44: sw $t2,64($sp) 539 0xafab0044, // 0x48: sw $t3,68($sp) 540 0xafac0048, // 0x4c: sw $t4,72($sp) 541 0xafad004c, // 0x50: sw $t5,76($sp) 542 0xafae0050, // 0x54: sw $t6,80($sp) 543 0xafaf0054, // 0x58: sw $t7,84($sp) 544 0xafb80058, // 0x5c: sw $t8,88($sp) 545 0xafb9005c, // 0x60: sw $t9,92($sp) 546 0xafbe0060, // 0x64: sw $fp,96($sp) 547 0xafbf0064, // 0x68: sw $ra,100($sp) 548 549 // JIT re-entry ctx addr. 550 0x00000000, // 0x6c: lui $a0,ctx 551 0x00000000, // 0x70: addiu $a0,$a0,ctx 552 553 0x03e02825, // 0x74: move $a1, $ra 554 0x24a5ffec, // 0x78: addiu $a1,$a1,-20 555 556 // JIT re-entry fn addr: 557 0x00000000, // 0x7c: lui $t9,reentry 558 0x00000000, // 0x80: addiu $t9,$t9,reentry 559 560 0x0320f809, // 0x84: jalr $t9 561 0x00000000, // 0x88: nop 562 0x8fbf0064, // 0x8c: lw $ra,100($sp) 563 0x8fbe0060, // 0x90: lw $fp,96($sp) 564 0x8fb9005c, // 0x94: lw $t9,92($sp) 565 0x8fb80058, // 0x98: lw $t8,88($sp) 566 0x8faf0054, // 0x9c: lw $t7,84($sp) 567 0x8fae0050, // 0xa0: lw $t6,80($sp) 568 0x8fad004c, // 0xa4: lw $t5,76($sp) 569 0x8fac0048, // 0xa8: lw $t4,72($sp) 570 0x8fab0044, // 0xac: lw $t3,68($sp) 571 0x8faa0040, // 0xb0: lw $t2,64($sp) 572 0x8fa9003c, // 0xb4: lw $t1,60($sp) 573 0x8fa80038, // 0xb8: lw $t0,56($sp) 574 0x8fb70034, // 0xbc: lw $s7,52($sp) 575 0x8fb60030, // 0xc0: lw $s6,48($sp) 576 0x8fb5002c, // 0xc4: lw $s5,44($sp) 577 0x8fb40028, // 0xc8: lw $s4,40($sp) 578 0x8fb30024, // 0xcc: lw $s3,36($sp) 579 0x8fb20020, // 0xd0: lw $s2,32($sp) 580 0x8fb1001c, // 0xd4: lw $s1,28($sp) 581 0x8fb00018, // 0xd8: lw $s0,24($sp) 582 0x8fa70014, // 0xdc: lw $a3,20($sp) 583 0x8fa60010, // 0xe0: lw $a2,16($sp) 584 0x8fa5000c, // 0xe4: lw $a1,12($sp) 585 0x8fa40008, // 0xe8: lw $a0,8($sp) 586 0x27bd0068, // 0xec: addiu $sp,$sp,104 587 0x0300f825, // 0xf0: move $ra, $t8 588 0x03200008, // 0xf4: jr $t9 589 0x00000000, // 0xf8: move $t9, $v0/v1 590 }; 591 592 const unsigned ReentryFnAddrOffset = 0x7c; // JIT re-entry fn addr lui 593 const unsigned ReentryCtxAddrOffset = 0x6c; // JIT re-entry context addr lui 594 const unsigned Offsett = 0xf8; 595 596 memcpy(ResolverWorkingMem, ResolverCode, sizeof(ResolverCode)); 597 598 // Depending on endian return value will be in v0 or v1. 599 uint32_t MoveVxT9 = isBigEndian ? 0x0060c825 : 0x0040c825; 600 memcpy(ResolverWorkingMem + Offsett, &MoveVxT9, sizeof(MoveVxT9)); 601 602 uint32_t ReentryCtxLUi = 603 0x3c040000 | (((ReentryCtxAddr.getValue() + 0x8000) >> 16) & 0xFFFF); 604 uint32_t ReentryCtxADDiu = 0x24840000 | (ReentryCtxAddr.getValue() & 0xFFFF); 605 memcpy(ResolverWorkingMem + ReentryCtxAddrOffset, &ReentryCtxLUi, 606 sizeof(ReentryCtxLUi)); 607 memcpy(ResolverWorkingMem + ReentryCtxAddrOffset + 4, &ReentryCtxADDiu, 608 sizeof(ReentryCtxADDiu)); 609 610 uint32_t ReentryFnLUi = 611 0x3c190000 | (((ReentryFnAddr.getValue() + 0x8000) >> 16) & 0xFFFF); 612 uint32_t ReentryFnADDiu = 0x27390000 | (ReentryFnAddr.getValue() & 0xFFFF); 613 memcpy(ResolverWorkingMem + ReentryFnAddrOffset, &ReentryFnLUi, 614 sizeof(ReentryFnLUi)); 615 memcpy(ResolverWorkingMem + ReentryFnAddrOffset + 4, &ReentryFnADDiu, 616 sizeof(ReentryFnADDiu)); 617 } 618 619 void OrcMips32_Base::writeTrampolines(char *TrampolineBlockWorkingMem, 620 ExecutorAddr TrampolineBlockTargetAddress, 621 ExecutorAddr ResolverAddr, 622 unsigned NumTrampolines) { 623 624 assert((ResolverAddr.getValue() >> 32) == 0 && "ResolverAddr out of range"); 625 626 uint32_t *Trampolines = 627 reinterpret_cast<uint32_t *>(TrampolineBlockWorkingMem); 628 uint32_t RHiAddr = ((ResolverAddr.getValue() + 0x8000) >> 16); 629 630 for (unsigned I = 0; I < NumTrampolines; ++I) { 631 // move $t8,$ra 632 // lui $t9,ResolverAddr 633 // addiu $t9,$t9,ResolverAddr 634 // jalr $t9 635 // nop 636 Trampolines[5 * I + 0] = 0x03e0c025; 637 Trampolines[5 * I + 1] = 0x3c190000 | (RHiAddr & 0xFFFF); 638 Trampolines[5 * I + 2] = 0x27390000 | (ResolverAddr.getValue() & 0xFFFF); 639 Trampolines[5 * I + 3] = 0x0320f809; 640 Trampolines[5 * I + 4] = 0x00000000; 641 } 642 } 643 644 void OrcMips32_Base::writeIndirectStubsBlock( 645 char *StubsBlockWorkingMem, ExecutorAddr StubsBlockTargetAddress, 646 ExecutorAddr PointersBlockTargetAddress, unsigned NumStubs) { 647 assert((StubsBlockTargetAddress.getValue() >> 32) == 0 && 648 "InitialPtrVal is out of range"); 649 650 // Stub format is: 651 // 652 // .section __orc_stubs 653 // stub1: 654 // lui $t9, ptr1 655 // lw $t9, %lo(ptr1)($t9) 656 // jr $t9 657 // stub2: 658 // lui $t9, ptr2 659 // lw $t9,%lo(ptr1)($t9) 660 // jr $t9 661 // 662 // ... 663 // 664 // .section __orc_ptrs 665 // ptr1: 666 // .word 0x0 667 // ptr2: 668 // .word 0x0 669 // 670 // i.. 671 672 assert(stubAndPointerRangesOk<OrcMips32_Base>( 673 StubsBlockTargetAddress, PointersBlockTargetAddress, NumStubs) && 674 "PointersBlock is out of range"); 675 676 // Populate the stubs page stubs and mark it executable. 677 uint32_t *Stub = reinterpret_cast<uint32_t *>(StubsBlockWorkingMem); 678 uint64_t PtrAddr = PointersBlockTargetAddress.getValue(); 679 680 for (unsigned I = 0; I < NumStubs; ++I) { 681 uint32_t HiAddr = ((PtrAddr + 0x8000) >> 16); 682 Stub[4 * I + 0] = 0x3c190000 | (HiAddr & 0xFFFF); // lui $t9,ptr1 683 Stub[4 * I + 1] = 0x8f390000 | (PtrAddr & 0xFFFF); // lw $t9,%lo(ptr1)($t9) 684 Stub[4 * I + 2] = 0x03200008; // jr $t9 685 Stub[4 * I + 3] = 0x00000000; // nop 686 PtrAddr += 4; 687 } 688 } 689 690 void OrcMips64::writeResolverCode(char *ResolverWorkingMem, 691 ExecutorAddr ResolverTargetAddress, 692 ExecutorAddr ReentryFnAddr, 693 ExecutorAddr ReentryCtxAddr) { 694 695 const uint32_t ResolverCode[] = { 696 //resolver_entry: 697 0x67bdff30, // 0x00: daddiu $sp,$sp,-208 698 0xffa20000, // 0x04: sd v0,0(sp) 699 0xffa30008, // 0x08: sd v1,8(sp) 700 0xffa40010, // 0x0c: sd a0,16(sp) 701 0xffa50018, // 0x10: sd a1,24(sp) 702 0xffa60020, // 0x14: sd a2,32(sp) 703 0xffa70028, // 0x18: sd a3,40(sp) 704 0xffa80030, // 0x1c: sd a4,48(sp) 705 0xffa90038, // 0x20: sd a5,56(sp) 706 0xffaa0040, // 0x24: sd a6,64(sp) 707 0xffab0048, // 0x28: sd a7,72(sp) 708 0xffac0050, // 0x2c: sd t0,80(sp) 709 0xffad0058, // 0x30: sd t1,88(sp) 710 0xffae0060, // 0x34: sd t2,96(sp) 711 0xffaf0068, // 0x38: sd t3,104(sp) 712 0xffb00070, // 0x3c: sd s0,112(sp) 713 0xffb10078, // 0x40: sd s1,120(sp) 714 0xffb20080, // 0x44: sd s2,128(sp) 715 0xffb30088, // 0x48: sd s3,136(sp) 716 0xffb40090, // 0x4c: sd s4,144(sp) 717 0xffb50098, // 0x50: sd s5,152(sp) 718 0xffb600a0, // 0x54: sd s6,160(sp) 719 0xffb700a8, // 0x58: sd s7,168(sp) 720 0xffb800b0, // 0x5c: sd t8,176(sp) 721 0xffb900b8, // 0x60: sd t9,184(sp) 722 0xffbe00c0, // 0x64: sd fp,192(sp) 723 0xffbf00c8, // 0x68: sd ra,200(sp) 724 725 // JIT re-entry ctx addr. 726 0x00000000, // 0x6c: lui $a0,heighest(ctx) 727 0x00000000, // 0x70: daddiu $a0,$a0,heigher(ctx) 728 0x00000000, // 0x74: dsll $a0,$a0,16 729 0x00000000, // 0x78: daddiu $a0,$a0,hi(ctx) 730 0x00000000, // 0x7c: dsll $a0,$a0,16 731 0x00000000, // 0x80: daddiu $a0,$a0,lo(ctx) 732 733 0x03e02825, // 0x84: move $a1, $ra 734 0x64a5ffdc, // 0x88: daddiu $a1,$a1,-36 735 736 // JIT re-entry fn addr: 737 0x00000000, // 0x8c: lui $t9,reentry 738 0x00000000, // 0x90: daddiu $t9,$t9,reentry 739 0x00000000, // 0x94: dsll $t9,$t9, 740 0x00000000, // 0x98: daddiu $t9,$t9, 741 0x00000000, // 0x9c: dsll $t9,$t9, 742 0x00000000, // 0xa0: daddiu $t9,$t9, 743 0x0320f809, // 0xa4: jalr $t9 744 0x00000000, // 0xa8: nop 745 0xdfbf00c8, // 0xac: ld ra, 200(sp) 746 0xdfbe00c0, // 0xb0: ld fp, 192(sp) 747 0xdfb900b8, // 0xb4: ld t9, 184(sp) 748 0xdfb800b0, // 0xb8: ld t8, 176(sp) 749 0xdfb700a8, // 0xbc: ld s7, 168(sp) 750 0xdfb600a0, // 0xc0: ld s6, 160(sp) 751 0xdfb50098, // 0xc4: ld s5, 152(sp) 752 0xdfb40090, // 0xc8: ld s4, 144(sp) 753 0xdfb30088, // 0xcc: ld s3, 136(sp) 754 0xdfb20080, // 0xd0: ld s2, 128(sp) 755 0xdfb10078, // 0xd4: ld s1, 120(sp) 756 0xdfb00070, // 0xd8: ld s0, 112(sp) 757 0xdfaf0068, // 0xdc: ld t3, 104(sp) 758 0xdfae0060, // 0xe0: ld t2, 96(sp) 759 0xdfad0058, // 0xe4: ld t1, 88(sp) 760 0xdfac0050, // 0xe8: ld t0, 80(sp) 761 0xdfab0048, // 0xec: ld a7, 72(sp) 762 0xdfaa0040, // 0xf0: ld a6, 64(sp) 763 0xdfa90038, // 0xf4: ld a5, 56(sp) 764 0xdfa80030, // 0xf8: ld a4, 48(sp) 765 0xdfa70028, // 0xfc: ld a3, 40(sp) 766 0xdfa60020, // 0x100: ld a2, 32(sp) 767 0xdfa50018, // 0x104: ld a1, 24(sp) 768 0xdfa40010, // 0x108: ld a0, 16(sp) 769 0xdfa30008, // 0x10c: ld v1, 8(sp) 770 0x67bd00d0, // 0x110: daddiu $sp,$sp,208 771 0x0300f825, // 0x114: move $ra, $t8 772 0x03200008, // 0x118: jr $t9 773 0x0040c825, // 0x11c: move $t9, $v0 774 }; 775 776 const unsigned ReentryFnAddrOffset = 0x8c; // JIT re-entry fn addr lui 777 const unsigned ReentryCtxAddrOffset = 0x6c; // JIT re-entry ctx addr lui 778 779 memcpy(ResolverWorkingMem, ResolverCode, sizeof(ResolverCode)); 780 781 uint32_t ReentryCtxLUi = 782 0x3c040000 | 783 (((ReentryCtxAddr.getValue() + 0x800080008000) >> 48) & 0xFFFF); 784 uint32_t ReentryCtxDADDiu = 785 0x64840000 | (((ReentryCtxAddr.getValue() + 0x80008000) >> 32) & 0xFFFF); 786 uint32_t ReentryCtxDSLL = 0x00042438; 787 uint32_t ReentryCtxDADDiu2 = 788 0x64840000 | ((((ReentryCtxAddr.getValue() + 0x8000) >> 16) & 0xFFFF)); 789 uint32_t ReentryCtxDSLL2 = 0x00042438; 790 uint32_t ReentryCtxDADDiu3 = 791 0x64840000 | (ReentryCtxAddr.getValue() & 0xFFFF); 792 793 memcpy(ResolverWorkingMem + ReentryCtxAddrOffset, &ReentryCtxLUi, 794 sizeof(ReentryCtxLUi)); 795 memcpy(ResolverWorkingMem + (ReentryCtxAddrOffset + 4), &ReentryCtxDADDiu, 796 sizeof(ReentryCtxDADDiu)); 797 memcpy(ResolverWorkingMem + (ReentryCtxAddrOffset + 8), &ReentryCtxDSLL, 798 sizeof(ReentryCtxDSLL)); 799 memcpy(ResolverWorkingMem + (ReentryCtxAddrOffset + 12), &ReentryCtxDADDiu2, 800 sizeof(ReentryCtxDADDiu2)); 801 memcpy(ResolverWorkingMem + (ReentryCtxAddrOffset + 16), &ReentryCtxDSLL2, 802 sizeof(ReentryCtxDSLL2)); 803 memcpy(ResolverWorkingMem + (ReentryCtxAddrOffset + 20), &ReentryCtxDADDiu3, 804 sizeof(ReentryCtxDADDiu3)); 805 806 uint32_t ReentryFnLUi = 807 0x3c190000 | 808 (((ReentryFnAddr.getValue() + 0x800080008000) >> 48) & 0xFFFF); 809 810 uint32_t ReentryFnDADDiu = 811 0x67390000 | (((ReentryFnAddr.getValue() + 0x80008000) >> 32) & 0xFFFF); 812 813 uint32_t ReentryFnDSLL = 0x0019cc38; 814 815 uint32_t ReentryFnDADDiu2 = 816 0x67390000 | (((ReentryFnAddr.getValue() + 0x8000) >> 16) & 0xFFFF); 817 818 uint32_t ReentryFnDSLL2 = 0x0019cc38; 819 820 uint32_t ReentryFnDADDiu3 = 0x67390000 | (ReentryFnAddr.getValue() & 0xFFFF); 821 822 memcpy(ResolverWorkingMem + ReentryFnAddrOffset, &ReentryFnLUi, 823 sizeof(ReentryFnLUi)); 824 memcpy(ResolverWorkingMem + (ReentryFnAddrOffset + 4), &ReentryFnDADDiu, 825 sizeof(ReentryFnDADDiu)); 826 memcpy(ResolverWorkingMem + (ReentryFnAddrOffset + 8), &ReentryFnDSLL, 827 sizeof(ReentryFnDSLL)); 828 memcpy(ResolverWorkingMem + (ReentryFnAddrOffset + 12), &ReentryFnDADDiu2, 829 sizeof(ReentryFnDADDiu2)); 830 memcpy(ResolverWorkingMem + (ReentryFnAddrOffset + 16), &ReentryFnDSLL2, 831 sizeof(ReentryFnDSLL2)); 832 memcpy(ResolverWorkingMem + (ReentryFnAddrOffset + 20), &ReentryFnDADDiu3, 833 sizeof(ReentryFnDADDiu3)); 834 } 835 836 void OrcMips64::writeTrampolines(char *TrampolineBlockWorkingMem, 837 ExecutorAddr TrampolineBlockTargetAddress, 838 ExecutorAddr ResolverAddr, 839 unsigned NumTrampolines) { 840 841 uint32_t *Trampolines = 842 reinterpret_cast<uint32_t *>(TrampolineBlockWorkingMem); 843 844 uint64_t HeighestAddr = ((ResolverAddr.getValue() + 0x800080008000) >> 48); 845 uint64_t HeigherAddr = ((ResolverAddr.getValue() + 0x80008000) >> 32); 846 uint64_t HiAddr = ((ResolverAddr.getValue() + 0x8000) >> 16); 847 848 for (unsigned I = 0; I < NumTrampolines; ++I) { 849 Trampolines[10 * I + 0] = 0x03e0c025; // move $t8,$ra 850 Trampolines[10 * I + 1] = 0x3c190000 | (HeighestAddr & 0xFFFF); // lui $t9,resolveAddr 851 Trampolines[10 * I + 2] = 0x67390000 | (HeigherAddr & 0xFFFF); // daddiu $t9,$t9,%higher(resolveAddr) 852 Trampolines[10 * I + 3] = 0x0019cc38; // dsll $t9,$t9,16 853 Trampolines[10 * I + 4] = 0x67390000 | (HiAddr & 0xFFFF); // daddiu $t9,$t9,%hi(ptr) 854 Trampolines[10 * I + 5] = 0x0019cc38; // dsll $t9,$t9,16 855 Trampolines[10 * I + 6] = 0x67390000 | (ResolverAddr.getValue() & 856 0xFFFF); // daddiu $t9,$t9,%lo(ptr) 857 Trampolines[10 * I + 7] = 0x0320f809; // jalr $t9 858 Trampolines[10 * I + 8] = 0x00000000; // nop 859 Trampolines[10 * I + 9] = 0x00000000; // nop 860 } 861 } 862 863 void OrcMips64::writeIndirectStubsBlock(char *StubsBlockWorkingMem, 864 ExecutorAddr StubsBlockTargetAddress, 865 ExecutorAddr PointersBlockTargetAddress, 866 unsigned NumStubs) { 867 // Stub format is: 868 // 869 // .section __orc_stubs 870 // stub1: 871 // lui $t9,ptr1 872 // dsll $t9,$t9,16 873 // daddiu $t9,$t9,%hi(ptr) 874 // dsll $t9,$t9,16 875 // ld $t9,%lo(ptr) 876 // jr $t9 877 // stub2: 878 // lui $t9,ptr1 879 // dsll $t9,$t9,16 880 // daddiu $t9,$t9,%hi(ptr) 881 // dsll $t9,$t9,16 882 // ld $t9,%lo(ptr) 883 // jr $t9 884 // 885 // ... 886 // 887 // .section __orc_ptrs 888 // ptr1: 889 // .dword 0x0 890 // ptr2: 891 // .dword 0x0 892 // 893 // ... 894 895 assert(stubAndPointerRangesOk<OrcMips64>( 896 StubsBlockTargetAddress, PointersBlockTargetAddress, NumStubs) && 897 "PointersBlock is out of range"); 898 899 // Populate the stubs page stubs and mark it executable. 900 uint32_t *Stub = reinterpret_cast<uint32_t *>(StubsBlockWorkingMem); 901 uint64_t PtrAddr = PointersBlockTargetAddress.getValue(); 902 903 for (unsigned I = 0; I < NumStubs; ++I, PtrAddr += 8) { 904 uint64_t HeighestAddr = ((PtrAddr + 0x800080008000) >> 48); 905 uint64_t HeigherAddr = ((PtrAddr + 0x80008000) >> 32); 906 uint64_t HiAddr = ((PtrAddr + 0x8000) >> 16); 907 Stub[8 * I + 0] = 0x3c190000 | (HeighestAddr & 0xFFFF); // lui $t9,ptr1 908 Stub[8 * I + 1] = 0x67390000 | (HeigherAddr & 0xFFFF); // daddiu $t9,$t9,%higher(ptr) 909 Stub[8 * I + 2] = 0x0019cc38; // dsll $t9,$t9,16 910 Stub[8 * I + 3] = 0x67390000 | (HiAddr & 0xFFFF); // daddiu $t9,$t9,%hi(ptr) 911 Stub[8 * I + 4] = 0x0019cc38; // dsll $t9,$t9,16 912 Stub[8 * I + 5] = 0xdf390000 | (PtrAddr & 0xFFFF); // ld $t9,%lo(ptr) 913 Stub[8 * I + 6] = 0x03200008; // jr $t9 914 Stub[8 * I + 7] = 0x00000000; // nop 915 } 916 } 917 918 void OrcRiscv64::writeResolverCode(char *ResolverWorkingMem, 919 ExecutorAddr ResolverTargetAddress, 920 ExecutorAddr ReentryFnAddr, 921 ExecutorAddr ReentryCtxAddr) { 922 923 const uint32_t ResolverCode[] = { 924 0xef810113, // 0x00: addi sp,sp,-264 925 0x00813023, // 0x04: sd s0,0(sp) 926 0x00913423, // 0x08: sd s1,8(sp) 927 0x01213823, // 0x0c: sd s2,16(sp) 928 0x01313c23, // 0x10: sd s3,24(sp) 929 0x03413023, // 0x14: sd s4,32(sp) 930 0x03513423, // 0x18: sd s5,40(sp) 931 0x03613823, // 0x1c: sd s6,48(sp) 932 0x03713c23, // 0x20: sd s7,56(sp) 933 0x05813023, // 0x24: sd s8,64(sp) 934 0x05913423, // 0x28: sd s9,72(sp) 935 0x05a13823, // 0x2c: sd s10,80(sp) 936 0x05b13c23, // 0x30: sd s11,88(sp) 937 0x06113023, // 0x34: sd ra,96(sp) 938 0x06a13423, // 0x38: sd a0,104(sp) 939 0x06b13823, // 0x3c: sd a1,112(sp) 940 0x06c13c23, // 0x40: sd a2,120(sp) 941 0x08d13023, // 0x44: sd a3,128(sp) 942 0x08e13423, // 0x48: sd a4,136(sp) 943 0x08f13823, // 0x4c: sd a5,144(sp) 944 0x09013c23, // 0x50: sd a6,152(sp) 945 0x0b113023, // 0x54: sd a7,160(sp) 946 0x0a813427, // 0x58: fsd fs0,168(sp) 947 0x0a913827, // 0x5c: fsd fs1,176(sp) 948 0x0b213c27, // 0x60: fsd fs2,184(sp) 949 0x0d313027, // 0x64: fsd fs3,192(sp) 950 0x0d413427, // 0x68: fsd fs4,200(sp) 951 0x0d513827, // 0x6c: fsd fs5,208(sp) 952 0x0d613c27, // 0x70: fsd fs6,216(sp) 953 0x0f713027, // 0x74: fsd fs7,224(sp) 954 0x0f813427, // 0x78: fsd fs8,232(sp) 955 0x0f913827, // 0x7c: fsd fs9,240(sp) 956 0x0fa13c27, // 0x80: fsd fs10,248(sp) 957 0x11b13027, // 0x84: fsd fs11,256(sp) 958 0x00000517, // 0x88: auipc a0,0x0 959 0x0b053503, // 0x8c: ld a0,176(a0) # 0x138 960 0x00030593, // 0x90: mv a1,t1 961 0xff458593, // 0x94: addi a1,a1,-12 962 0x00000617, // 0x98: auipc a2,0x0 963 0x0a863603, // 0x9c: ld a2,168(a2) # 0x140 964 0x000600e7, // 0xa0: jalr a2 965 0x00050293, // 0xa4: mv t0,a0 966 0x00013403, // 0xa8: ld s0,0(sp) 967 0x00813483, // 0xac: ld s1,8(sp) 968 0x01013903, // 0xb0: ld s2,16(sp) 969 0x01813983, // 0xb4: ld s3,24(sp) 970 0x02013a03, // 0xb8: ld s4,32(sp) 971 0x02813a83, // 0xbc: ld s5,40(sp) 972 0x03013b03, // 0xc0: ld s6,48(sp) 973 0x03813b83, // 0xc4: ld s7,56(sp) 974 0x04013c03, // 0xc8: ld s8,64(sp) 975 0x04813c83, // 0xcc: ld s9,72(sp) 976 0x05013d03, // 0xd0: ld s10,80(sp) 977 0x05813d83, // 0xd4: ld s11,88(sp) 978 0x06013083, // 0xd8: ld ra,96(sp) 979 0x06813503, // 0xdc: ld a0,104(sp) 980 0x07013583, // 0xe0: ld a1,112(sp) 981 0x07813603, // 0xe4: ld a2,120(sp) 982 0x08013683, // 0xe8: ld a3,128(sp) 983 0x08813703, // 0xec: ld a4,136(sp) 984 0x09013783, // 0xf0: ld a5,144(sp) 985 0x09813803, // 0xf4: ld a6,152(sp) 986 0x0a013883, // 0xf8: ld a7,160(sp) 987 0x0a813407, // 0xfc: fld fs0,168(sp) 988 0x0b013487, // 0x100: fld fs1,176(sp) 989 0x0b813907, // 0x104: fld fs2,184(sp) 990 0x0c013987, // 0x108: fld fs3,192(sp) 991 0x0c813a07, // 0x10c: fld fs4,200(sp) 992 0x0d013a87, // 0x110: fld fs5,208(sp) 993 0x0d813b07, // 0x114: fld fs6,216(sp) 994 0x0e013b87, // 0x118: fld fs7,224(sp) 995 0x0e813c07, // 0x11c: fld fs8,232(sp) 996 0x0f013c87, // 0x120: fld fs9,240(sp) 997 0x0f813d07, // 0x124: fld fs10,248(sp) 998 0x10013d87, // 0x128: fld fs11,256(sp) 999 0x10810113, // 0x12c: addi sp,sp,264 1000 0x00028067, // 0x130: jr t0 1001 0x12345678, // 0x134: padding to align at 8 byte 1002 0x12345678, // 0x138: Lreentry_ctx_ptr: 1003 0xdeadbeef, // 0x13c: .quad 0 1004 0x98765432, // 0x140: Lreentry_fn_ptr: 1005 0xcafef00d // 0x144: .quad 0 1006 }; 1007 1008 const unsigned ReentryCtxAddrOffset = 0x138; 1009 const unsigned ReentryFnAddrOffset = 0x140; 1010 1011 memcpy(ResolverWorkingMem, ResolverCode, sizeof(ResolverCode)); 1012 memcpy(ResolverWorkingMem + ReentryFnAddrOffset, &ReentryFnAddr, 1013 sizeof(uint64_t)); 1014 memcpy(ResolverWorkingMem + ReentryCtxAddrOffset, &ReentryCtxAddr, 1015 sizeof(uint64_t)); 1016 } 1017 1018 void OrcRiscv64::writeTrampolines(char *TrampolineBlockWorkingMem, 1019 ExecutorAddr TrampolineBlockTargetAddress, 1020 ExecutorAddr ResolverAddr, 1021 unsigned NumTrampolines) { 1022 1023 unsigned OffsetToPtr = alignTo(NumTrampolines * TrampolineSize, 8); 1024 1025 memcpy(TrampolineBlockWorkingMem + OffsetToPtr, &ResolverAddr, 1026 sizeof(uint64_t)); 1027 1028 uint32_t *Trampolines = 1029 reinterpret_cast<uint32_t *>(TrampolineBlockWorkingMem); 1030 for (unsigned I = 0; I < NumTrampolines; ++I, OffsetToPtr -= TrampolineSize) { 1031 uint32_t Hi20 = (OffsetToPtr + 0x800) & 0xFFFFF000; 1032 uint32_t Lo12 = OffsetToPtr - Hi20; 1033 Trampolines[4 * I + 0] = 0x00000297 | Hi20; // auipc t0, %hi(Lptr) 1034 Trampolines[4 * I + 1] = 1035 0x0002b283 | ((Lo12 & 0xFFF) << 20); // ld t0, %lo(Lptr) 1036 Trampolines[4 * I + 2] = 0x00028367; // jalr t1, t0 1037 Trampolines[4 * I + 3] = 0xdeadface; // padding 1038 } 1039 } 1040 1041 void OrcRiscv64::writeIndirectStubsBlock( 1042 char *StubsBlockWorkingMem, ExecutorAddr StubsBlockTargetAddress, 1043 ExecutorAddr PointersBlockTargetAddress, unsigned NumStubs) { 1044 // Stub format is: 1045 // 1046 // .section __orc_stubs 1047 // stub1: 1048 // auipc t0, %hi(ptr1) ; PC-rel load of ptr1 1049 // ld t0, %lo(t0) 1050 // jr t0 ; Jump to resolver 1051 // .quad 0 ; Pad to 16 bytes 1052 // stub2: 1053 // auipc t0, %hi(ptr1) ; PC-rel load of ptr1 1054 // ld t0, %lo(t0) 1055 // jr t0 ; Jump to resolver 1056 // .quad 0 1057 // 1058 // ... 1059 // 1060 // .section __orc_ptrs 1061 // ptr1: 1062 // .quad 0x0 1063 // ptr2: 1064 // .quad 0x0 1065 // 1066 // ... 1067 1068 assert(stubAndPointerRangesOk<OrcRiscv64>( 1069 StubsBlockTargetAddress, PointersBlockTargetAddress, NumStubs) && 1070 "PointersBlock is out of range"); 1071 1072 uint32_t *Stub = reinterpret_cast<uint32_t *>(StubsBlockWorkingMem); 1073 1074 for (unsigned I = 0; I < NumStubs; ++I) { 1075 uint64_t PtrDisplacement = 1076 PointersBlockTargetAddress - StubsBlockTargetAddress; 1077 uint32_t Hi20 = (PtrDisplacement + 0x800) & 0xFFFFF000; 1078 uint32_t Lo12 = PtrDisplacement - Hi20; 1079 Stub[4 * I + 0] = 0x00000297 | Hi20; // auipc t0, %hi(Lptr) 1080 Stub[4 * I + 1] = 0x0002b283 | ((Lo12 & 0xFFF) << 20); // ld t0, %lo(Lptr) 1081 Stub[4 * I + 2] = 0x00028067; // jr t0 1082 Stub[4 * I + 3] = 0xfeedbeef; // padding 1083 PointersBlockTargetAddress += PointerSize; 1084 StubsBlockTargetAddress += StubSize; 1085 } 1086 } 1087 1088 void OrcLoongArch64::writeResolverCode(char *ResolverWorkingMem, 1089 ExecutorAddr ResolverTargetAddress, 1090 ExecutorAddr ReentryFnAddr, 1091 ExecutorAddr ReentryCtxAddr) { 1092 1093 LLVM_DEBUG({ 1094 dbgs() << "Writing resolver code to " 1095 << formatv("{0:x16}", ResolverTargetAddress) << "\n"; 1096 }); 1097 1098 const uint32_t ResolverCode[] = { 1099 0x02fde063, // 0x0: addi.d $sp, $sp, -136(0xf78) 1100 0x29c00061, // 0x4: st.d $ra, $sp, 0 1101 0x29c02064, // 0x8: st.d $a0, $sp, 8(0x8) 1102 0x29c04065, // 0xc: st.d $a1, $sp, 16(0x10) 1103 0x29c06066, // 0x10: st.d $a2, $sp, 24(0x18) 1104 0x29c08067, // 0x14: st.d $a3, $sp, 32(0x20) 1105 0x29c0a068, // 0x18: st.d $a4, $sp, 40(0x28) 1106 0x29c0c069, // 0x1c: st.d $a5, $sp, 48(0x30) 1107 0x29c0e06a, // 0x20: st.d $a6, $sp, 56(0x38) 1108 0x29c1006b, // 0x24: st.d $a7, $sp, 64(0x40) 1109 0x2bc12060, // 0x28: fst.d $fa0, $sp, 72(0x48) 1110 0x2bc14061, // 0x2c: fst.d $fa1, $sp, 80(0x50) 1111 0x2bc16062, // 0x30: fst.d $fa2, $sp, 88(0x58) 1112 0x2bc18063, // 0x34: fst.d $fa3, $sp, 96(0x60) 1113 0x2bc1a064, // 0x38: fst.d $fa4, $sp, 104(0x68) 1114 0x2bc1c065, // 0x3c: fst.d $fa5, $sp, 112(0x70) 1115 0x2bc1e066, // 0x40: fst.d $fa6, $sp, 120(0x78) 1116 0x2bc20067, // 0x44: fst.d $fa7, $sp, 128(0x80) 1117 0x1c000004, // 0x48: pcaddu12i $a0, 0 1118 0x28c1c084, // 0x4c: ld.d $a0, $a0, 112(0x70) 1119 0x001501a5, // 0x50: move $a1, $t1 1120 0x02ffd0a5, // 0x54: addi.d $a1, $a1, -12(0xff4) 1121 0x1c000006, // 0x58: pcaddu12i $a2, 0 1122 0x28c1a0c6, // 0x5c: ld.d $a2, $a2, 104(0x68) 1123 0x4c0000c1, // 0x60: jirl $ra, $a2, 0 1124 0x0015008c, // 0x64: move $t0, $a0 1125 0x2b820067, // 0x68: fld.d $fa7, $sp, 128(0x80) 1126 0x2b81e066, // 0x6c: fld.d $fa6, $sp, 120(0x78) 1127 0x2b81c065, // 0x70: fld.d $fa5, $sp, 112(0x70) 1128 0x2b81a064, // 0x74: fld.d $fa4, $sp, 104(0x68) 1129 0x2b818063, // 0x78: fld.d $fa3, $sp, 96(0x60) 1130 0x2b816062, // 0x7c: fld.d $fa2, $sp, 88(0x58) 1131 0x2b814061, // 0x80: fld.d $fa1, $sp, 80(0x50) 1132 0x2b812060, // 0x84: fld.d $fa0, $sp, 72(0x48) 1133 0x28c1006b, // 0x88: ld.d $a7, $sp, 64(0x40) 1134 0x28c0e06a, // 0x8c: ld.d $a6, $sp, 56(0x38) 1135 0x28c0c069, // 0x90: ld.d $a5, $sp, 48(0x30) 1136 0x28c0a068, // 0x94: ld.d $a4, $sp, 40(0x28) 1137 0x28c08067, // 0x98: ld.d $a3, $sp, 32(0x20) 1138 0x28c06066, // 0x9c: ld.d $a2, $sp, 24(0x18) 1139 0x28c04065, // 0xa0: ld.d $a1, $sp, 16(0x10) 1140 0x28c02064, // 0xa4: ld.d $a0, $sp, 8(0x8) 1141 0x28c00061, // 0xa8: ld.d $ra, $sp, 0 1142 0x02c22063, // 0xac: addi.d $sp, $sp, 136(0x88) 1143 0x4c000180, // 0xb0: jr $t0 1144 0x00000000, // 0xb4: padding to align at 8 bytes 1145 0x01234567, // 0xb8: Lreentry_ctx_ptr: 1146 0xdeedbeef, // 0xbc: .dword 0 1147 0x98765432, // 0xc0: Lreentry_fn_ptr: 1148 0xcafef00d, // 0xc4: .dword 0 1149 }; 1150 1151 const unsigned ReentryCtxAddrOffset = 0xb8; 1152 const unsigned ReentryFnAddrOffset = 0xc0; 1153 1154 memcpy(ResolverWorkingMem, ResolverCode, sizeof(ResolverCode)); 1155 memcpy(ResolverWorkingMem + ReentryFnAddrOffset, &ReentryFnAddr, 1156 sizeof(uint64_t)); 1157 memcpy(ResolverWorkingMem + ReentryCtxAddrOffset, &ReentryCtxAddr, 1158 sizeof(uint64_t)); 1159 } 1160 1161 void OrcLoongArch64::writeTrampolines(char *TrampolineBlockWorkingMem, 1162 ExecutorAddr TrampolineBlockTargetAddress, 1163 ExecutorAddr ResolverAddr, 1164 unsigned NumTrampolines) { 1165 1166 LLVM_DEBUG({ 1167 dbgs() << "Writing trampoline code to " 1168 << formatv("{0:x16}", TrampolineBlockTargetAddress) << "\n"; 1169 }); 1170 1171 unsigned OffsetToPtr = alignTo(NumTrampolines * TrampolineSize, 8); 1172 1173 memcpy(TrampolineBlockWorkingMem + OffsetToPtr, &ResolverAddr, 1174 sizeof(uint64_t)); 1175 1176 uint32_t *Trampolines = 1177 reinterpret_cast<uint32_t *>(TrampolineBlockWorkingMem); 1178 for (unsigned I = 0; I < NumTrampolines; ++I, OffsetToPtr -= TrampolineSize) { 1179 uint32_t Hi20 = (OffsetToPtr + 0x800) & 0xfffff000; 1180 uint32_t Lo12 = OffsetToPtr - Hi20; 1181 Trampolines[4 * I + 0] = 1182 0x1c00000c | 1183 (((Hi20 >> 12) & 0xfffff) << 5); // pcaddu12i $t0, %pc_hi20(Lptr) 1184 Trampolines[4 * I + 1] = 1185 0x28c0018c | ((Lo12 & 0xfff) << 10); // ld.d $t0, $t0, %pc_lo12(Lptr) 1186 Trampolines[4 * I + 2] = 0x4c00018d; // jirl $t1, $t0, 0 1187 Trampolines[4 * I + 3] = 0x0; // padding 1188 } 1189 } 1190 1191 void OrcLoongArch64::writeIndirectStubsBlock( 1192 char *StubsBlockWorkingMem, ExecutorAddr StubsBlockTargetAddress, 1193 ExecutorAddr PointersBlockTargetAddress, unsigned NumStubs) { 1194 // Stub format is: 1195 // 1196 // .section __orc_stubs 1197 // stub1: 1198 // pcaddu12i $t0, %pc_hi20(ptr1) ; PC-rel load of ptr1 1199 // ld.d $t0, $t0, %pc_lo12(ptr1) 1200 // jr $t0 ; Jump to resolver 1201 // .dword 0 ; Pad to 16 bytes 1202 // stub2: 1203 // pcaddu12i $t0, %pc_hi20(ptr2) ; PC-rel load of ptr2 1204 // ld.d $t0, $t0, %pc_lo12(ptr2) 1205 // jr $t0 ; Jump to resolver 1206 // .dword 0 ; Pad to 16 bytes 1207 // ... 1208 // 1209 // .section __orc_ptrs 1210 // ptr1: 1211 // .dword 0x0 1212 // ptr2: 1213 // .dword 0x0 1214 // ... 1215 LLVM_DEBUG({ 1216 dbgs() << "Writing stubs code to " 1217 << formatv("{0:x16}", StubsBlockTargetAddress) << "\n"; 1218 }); 1219 assert(stubAndPointerRangesOk<OrcLoongArch64>( 1220 StubsBlockTargetAddress, PointersBlockTargetAddress, NumStubs) && 1221 "PointersBlock is out of range"); 1222 1223 uint32_t *Stub = reinterpret_cast<uint32_t *>(StubsBlockWorkingMem); 1224 1225 for (unsigned I = 0; I < NumStubs; ++I) { 1226 uint64_t PtrDisplacement = 1227 PointersBlockTargetAddress - StubsBlockTargetAddress; 1228 uint32_t Hi20 = (PtrDisplacement + 0x800) & 0xfffff000; 1229 uint32_t Lo12 = PtrDisplacement - Hi20; 1230 Stub[4 * I + 0] = 0x1c00000c | (((Hi20 >> 12) & 0xfffff) 1231 << 5); // pcaddu12i $t0, %pc_hi20(Lptr) 1232 Stub[4 * I + 1] = 1233 0x28c0018c | ((Lo12 & 0xfff) << 10); // ld.d $t0, $t0, %pc_lo12(Lptr) 1234 Stub[4 * I + 2] = 0x4c000180; // jr $t0 1235 Stub[4 * I + 3] = 0x0; // padding 1236 PointersBlockTargetAddress += PointerSize; 1237 StubsBlockTargetAddress += StubSize; 1238 } 1239 } 1240 1241 } // End namespace orc. 1242 } // End namespace llvm. 1243