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Issue 2051043002: Implement Wasm GrowMemory opcode as a wasm runtime call (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Ben's review, fix includes Created 4 years, 6 months ago
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1 // Copyright (c) 1994-2006 Sun Microsystems Inc. 1 // Copyright (c) 1994-2006 Sun Microsystems Inc.
2 // All Rights Reserved. 2 // All Rights Reserved.
3 // 3 //
4 // Redistribution and use in source and binary forms, with or without 4 // Redistribution and use in source and binary forms, with or without
5 // modification, are permitted provided that the following conditions 5 // modification, are permitted provided that the following conditions
6 // are met: 6 // are met:
7 // 7 //
8 // - Redistributions of source code must retain the above copyright notice, 8 // - Redistributions of source code must retain the above copyright notice,
9 // this list of conditions and the following disclaimer. 9 // this list of conditions and the following disclaimer.
10 // 10 //
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249 return reinterpret_cast<uint32_t>(Assembler::target_address_at(pc_, host_)); 249 return reinterpret_cast<uint32_t>(Assembler::target_address_at(pc_, host_));
250 } 250 }
251 251
252 void RelocInfo::update_wasm_memory_reference( 252 void RelocInfo::update_wasm_memory_reference(
253 Address old_base, Address new_base, uint32_t old_size, uint32_t new_size, 253 Address old_base, Address new_base, uint32_t old_size, uint32_t new_size,
254 ICacheFlushMode icache_flush_mode) { 254 ICacheFlushMode icache_flush_mode) {
255 DCHECK(IsWasmMemoryReference(rmode_) || IsWasmMemorySizeReference(rmode_)); 255 DCHECK(IsWasmMemoryReference(rmode_) || IsWasmMemorySizeReference(rmode_));
256 if (IsWasmMemoryReference(rmode_)) { 256 if (IsWasmMemoryReference(rmode_)) {
257 Address updated_memory_reference; 257 Address updated_memory_reference;
258 DCHECK(old_base <= wasm_memory_reference() && 258 DCHECK(old_base <= wasm_memory_reference() &&
259 wasm_memory_reference() < old_base + old_size); 259 wasm_memory_reference() <= old_base + old_size);
260 updated_memory_reference = new_base + (wasm_memory_reference() - old_base); 260 updated_memory_reference = new_base + (wasm_memory_reference() - old_base);
261 DCHECK(new_base <= updated_memory_reference && 261 DCHECK(new_base <= updated_memory_reference &&
262 updated_memory_reference < new_base + new_size); 262 updated_memory_reference < new_base + new_size);
263 Assembler::set_target_address_at( 263 Assembler::set_target_address_at(
264 isolate_, pc_, host_, updated_memory_reference, icache_flush_mode); 264 isolate_, pc_, host_, updated_memory_reference, icache_flush_mode);
265 } else if (IsWasmMemorySizeReference(rmode_)) { 265 } else if (IsWasmMemorySizeReference(rmode_)) {
266 uint32_t updated_size_reference; 266 uint32_t updated_size_reference;
267 DCHECK(wasm_memory_size_reference() <= old_size); 267 DCHECK(wasm_memory_size_reference() <= old_size);
268 updated_size_reference = 268 updated_size_reference =
269 new_size + (wasm_memory_size_reference() - old_size); 269 new_size + (wasm_memory_size_reference() - old_size);
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4275 DCHECK(is_uint12(offset)); 4275 DCHECK(is_uint12(offset));
4276 instr_at_put(pc, SetLdrRegisterImmediateOffset(instr, offset)); 4276 instr_at_put(pc, SetLdrRegisterImmediateOffset(instr, offset));
4277 } 4277 }
4278 } 4278 }
4279 4279
4280 4280
4281 } // namespace internal 4281 } // namespace internal
4282 } // namespace v8 4282 } // namespace v8
4283 4283
4284 #endif // V8_TARGET_ARCH_ARM 4284 #endif // V8_TARGET_ARCH_ARM
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