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Diffstat (limited to 'fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/core/iwasm/common/wasm_exec_env.h')
| -rw-r--r-- | fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/core/iwasm/common/wasm_exec_env.h | 323 |
1 files changed, 323 insertions, 0 deletions
diff --git a/fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/core/iwasm/common/wasm_exec_env.h b/fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/core/iwasm/common/wasm_exec_env.h new file mode 100644 index 000000000..29b28a159 --- /dev/null +++ b/fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/core/iwasm/common/wasm_exec_env.h @@ -0,0 +1,323 @@ +/* + * Copyright (C) 2019 Intel Corporation. All rights reserved. + * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception + */ + +#ifndef _WASM_EXEC_ENV_H +#define _WASM_EXEC_ENV_H + +#include "bh_assert.h" +#if WASM_ENABLE_INTERP != 0 +#include "../interpreter/wasm.h" +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +struct WASMModuleInstanceCommon; +struct WASMInterpFrame; + +#if WASM_ENABLE_THREAD_MGR != 0 +typedef struct WASMCluster WASMCluster; +#if WASM_ENABLE_DEBUG_INTERP != 0 +typedef struct WASMCurrentEnvStatus WASMCurrentEnvStatus; +#endif +#endif + +#ifdef OS_ENABLE_HW_BOUND_CHECK +typedef struct WASMJmpBuf { + struct WASMJmpBuf *prev; + korp_jmpbuf jmpbuf; +} WASMJmpBuf; +#endif + +/* Execution environment */ +typedef struct WASMExecEnv { + /* Next thread's exec env of a WASM module instance. */ + struct WASMExecEnv *next; + + /* Previous thread's exec env of a WASM module instance. */ + struct WASMExecEnv *prev; + + /* Note: field module_inst, argv_buf, native_stack_boundary, + suspend_flags, aux_stack_boundary, aux_stack_bottom, and + native_symbol are used by AOTed code, don't change the + places of them */ + + /* The WASM module instance of current thread */ + struct WASMModuleInstanceCommon *module_inst; + +#if WASM_ENABLE_AOT != 0 + uint32 *argv_buf; +#endif + + /* The boundary of native stack. When runtime detects that native + frame may overrun this boundary, it throws stack overflow + exception. */ + uint8 *native_stack_boundary; + + /* Used to terminate or suspend current thread + bit 0: need to terminate + bit 1: need to suspend + bit 2: need to go into breakpoint + bit 3: return from pthread_exit */ + union { + uint32 flags; + uintptr_t __padding__; + } suspend_flags; + + /* Auxiliary stack boundary */ + union { + uint32 boundary; + uintptr_t __padding__; + } aux_stack_boundary; + + /* Auxiliary stack bottom */ + union { + uint32 bottom; + uintptr_t __padding__; + } aux_stack_bottom; + +#if WASM_ENABLE_AOT != 0 + /* Native symbol list, reserved */ + void **native_symbol; +#endif + + /* + * The lowest stack pointer value observed. + * Assumption: native stack grows to the lower address. + */ + uint8 *native_stack_top_min; + +#if WASM_ENABLE_FAST_JIT != 0 + /** + * Cache for + * - jit native operations in 32-bit target which hasn't 64-bit + * int/float registers, mainly for the operations of double and int64, + * such as F64TOI64, F32TOI64, I64 MUL/REM, and so on. + * - SSE instructions. + **/ + uint64 jit_cache[2]; +#endif + +#if WASM_ENABLE_THREAD_MGR != 0 + /* thread return value */ + void *thread_ret_value; + + /* Must be provided by thread library */ + void *(*thread_start_routine)(void *); + void *thread_arg; + + /* pointer to the cluster */ + WASMCluster *cluster; + + /* used to support debugger */ + korp_mutex wait_lock; + korp_cond wait_cond; + /* the count of threads which are joining current thread */ + uint32 wait_count; + + /* whether current thread is detached */ + bool thread_is_detached; +#endif + +#if WASM_ENABLE_DEBUG_INTERP != 0 + WASMCurrentEnvStatus *current_status; +#endif + + /* attachment for native function */ + void *attachment; + + void *user_data; + + /* Current interpreter frame of current thread */ + struct WASMInterpFrame *cur_frame; + + /* The native thread handle of current thread */ + korp_tid handle; + +#if WASM_ENABLE_INTERP != 0 && WASM_ENABLE_FAST_INTERP == 0 + BlockAddr block_addr_cache[BLOCK_ADDR_CACHE_SIZE][BLOCK_ADDR_CONFLICT_SIZE]; +#endif + +#ifdef OS_ENABLE_HW_BOUND_CHECK + WASMJmpBuf *jmpbuf_stack_top; + /* One guard page for the exception check */ + uint8 *exce_check_guard_page; +#endif + +#if WASM_ENABLE_MEMORY_PROFILING != 0 + uint32 max_wasm_stack_used; +#endif + + /* The WASM stack size */ + uint32 wasm_stack_size; + + /* The WASM stack of current thread */ + union { + uint64 __make_it_8_byte_aligned_; + + struct { + /* The top boundary of the stack. */ + uint8 *top_boundary; + + /* Top cell index which is free. */ + uint8 *top; + + /* The WASM stack. */ + uint8 bottom[1]; + } s; + } wasm_stack; +} WASMExecEnv; + +#if WASM_ENABLE_MEMORY_PROFILING != 0 +#define RECORD_STACK_USAGE(e, p) \ + do { \ + if ((e)->native_stack_top_min > (p)) { \ + (e)->native_stack_top_min = (p); \ + } \ + } while (0) +#else +#define RECORD_STACK_USAGE(e, p) (void)0 +#endif + +WASMExecEnv * +wasm_exec_env_create_internal(struct WASMModuleInstanceCommon *module_inst, + uint32 stack_size); + +void +wasm_exec_env_destroy_internal(WASMExecEnv *exec_env); + +WASMExecEnv * +wasm_exec_env_create(struct WASMModuleInstanceCommon *module_inst, + uint32 stack_size); + +void +wasm_exec_env_destroy(WASMExecEnv *exec_env); + +static inline bool +wasm_exec_env_is_aux_stack_managed_by_runtime(WASMExecEnv *exec_env) +{ + return exec_env->aux_stack_boundary.boundary != 0 + || exec_env->aux_stack_bottom.bottom != 0; +} + +/** + * Allocate a WASM frame from the WASM stack. + * + * @param exec_env the current execution environment + * @param size size of the WASM frame, it must be a multiple of 4 + * + * @return the WASM frame if there is enough space in the stack area + * with a protection area, NULL otherwise + */ +static inline void * +wasm_exec_env_alloc_wasm_frame(WASMExecEnv *exec_env, unsigned size) +{ + uint8 *addr = exec_env->wasm_stack.s.top; + + bh_assert(!(size & 3)); + + /* For classic interpreter, the outs area doesn't contain the const cells, + its size cannot be larger than the frame size, so here checking stack + overflow with multiplying by 2 is enough. For fast interpreter, since + the outs area contains const cells, its size may be larger than current + frame size, we should check again before putting the function arguments + into the outs area. */ + if (size * 2 + > (uint32)(uintptr_t)(exec_env->wasm_stack.s.top_boundary - addr)) { + /* WASM stack overflow. */ + return NULL; + } + + exec_env->wasm_stack.s.top += size; + +#if WASM_ENABLE_MEMORY_PROFILING != 0 + { + uint32 wasm_stack_used = + exec_env->wasm_stack.s.top - exec_env->wasm_stack.s.bottom; + if (wasm_stack_used > exec_env->max_wasm_stack_used) + exec_env->max_wasm_stack_used = wasm_stack_used; + } +#endif + return addr; +} + +static inline void +wasm_exec_env_free_wasm_frame(WASMExecEnv *exec_env, void *prev_top) +{ + bh_assert((uint8 *)prev_top >= exec_env->wasm_stack.s.bottom); + exec_env->wasm_stack.s.top = (uint8 *)prev_top; +} + +/** + * Get the current WASM stack top pointer. + * + * @param exec_env the current execution environment + * + * @return the current WASM stack top pointer + */ +static inline void * +wasm_exec_env_wasm_stack_top(WASMExecEnv *exec_env) +{ + return exec_env->wasm_stack.s.top; +} + +/** + * Set the current frame pointer. + * + * @param exec_env the current execution environment + * @param frame the WASM frame to be set for the current exec env + */ +static inline void +wasm_exec_env_set_cur_frame(WASMExecEnv *exec_env, + struct WASMInterpFrame *frame) +{ + exec_env->cur_frame = frame; +} + +/** + * Get the current frame pointer. + * + * @param exec_env the current execution environment + * + * @return the current frame pointer + */ +static inline struct WASMInterpFrame * +wasm_exec_env_get_cur_frame(WASMExecEnv *exec_env) +{ + return exec_env->cur_frame; +} + +struct WASMModuleInstanceCommon * +wasm_exec_env_get_module_inst(WASMExecEnv *exec_env); + +void +wasm_exec_env_set_module_inst( + WASMExecEnv *exec_env, struct WASMModuleInstanceCommon *const module_inst); + +void +wasm_exec_env_set_thread_info(WASMExecEnv *exec_env); + +#if WASM_ENABLE_THREAD_MGR != 0 +void * +wasm_exec_env_get_thread_arg(WASMExecEnv *exec_env); + +void +wasm_exec_env_set_thread_arg(WASMExecEnv *exec_env, void *thread_arg); +#endif + +#ifdef OS_ENABLE_HW_BOUND_CHECK +void +wasm_exec_env_push_jmpbuf(WASMExecEnv *exec_env, WASMJmpBuf *jmpbuf); + +WASMJmpBuf * +wasm_exec_env_pop_jmpbuf(WASMExecEnv *exec_env); +#endif + +#ifdef __cplusplus +} +#endif + +#endif /* end of _WASM_EXEC_ENV_H */ |