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https://github.com/bytecodealliance/wasm-micro-runtime.git
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bf28030993
Import WAMR Fast JIT which is a lightweight JIT with quick startup, small footprint, relatively good performance (~40% to ~50% of LLVM JIT) and good portability. Platforms supported: Linux, MacOS and Linux SGX. Arch supported: x86-64.
66 lines
1.6 KiB
C
66 lines
1.6 KiB
C
/*
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* Copyright (C) 2021 Intel Corporation. All rights reserved.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*/
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#include "jit_codecache.h"
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#include "mem_alloc.h"
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#include "jit_compiler.h"
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static void *code_cache_pool = NULL;
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static uint32 code_cache_pool_size = 0;
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static mem_allocator_t code_cache_pool_allocator = NULL;
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bool
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jit_code_cache_init(uint32 code_cache_size)
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{
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int map_prot = MMAP_PROT_READ | MMAP_PROT_WRITE | MMAP_PROT_EXEC;
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int map_flags = MMAP_MAP_NONE;
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if (!(code_cache_pool =
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os_mmap(NULL, code_cache_size, map_prot, map_flags))) {
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return false;
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}
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if (!(code_cache_pool_allocator =
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mem_allocator_create(code_cache_pool, code_cache_size))) {
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os_munmap(code_cache_pool, code_cache_size);
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code_cache_pool = NULL;
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return false;
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}
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code_cache_pool_size = code_cache_size;
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return true;
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}
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void
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jit_code_cache_destroy()
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{
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mem_allocator_destroy(code_cache_pool_allocator);
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os_munmap(code_cache_pool, code_cache_pool_size);
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}
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void *
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jit_code_cache_alloc(uint32 size)
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{
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return mem_allocator_malloc(code_cache_pool_allocator, size);
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}
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void
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jit_code_cache_free(void *ptr)
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{
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if (ptr)
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mem_allocator_free(code_cache_pool_allocator, ptr);
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}
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bool
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jit_pass_register_jitted_code(JitCompContext *cc)
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{
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uint32 jit_func_idx =
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cc->cur_wasm_func_idx - cc->cur_wasm_module->import_function_count;
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cc->cur_wasm_func->fast_jit_jitted_code = cc->jitted_addr_begin;
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cc->cur_wasm_module->fast_jit_func_ptrs[jit_func_idx] =
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cc->jitted_addr_begin;
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return true;
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}
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