mirror of
https://github.com/capstone-engine/llvm-capstone.git
synced 2025-01-13 11:22:03 +00:00
1eb79e732c
Previously we were relying on the dynamic loader to take care of this but it simple and correct for us to do it here instead. Now we initialize bss segments as part of `__wasm_init_memory` at the same time we initialize passive segments. In addition we extent the us of `__wasm_init_memory` outside of shared memory situations. Specifically it is now used to initialize bss segments when the memory is imported. Differential Revision: https://reviews.llvm.org/D112667
56 lines
1.5 KiB
C++
56 lines
1.5 KiB
C++
//===- OutputSegment.h ------------------------------------------*- C++ -*-===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLD_WASM_OUTPUT_SEGMENT_H
|
|
#define LLD_WASM_OUTPUT_SEGMENT_H
|
|
|
|
#include "InputChunks.h"
|
|
#include "lld/Common/ErrorHandler.h"
|
|
#include "llvm/Object/Wasm.h"
|
|
|
|
namespace lld {
|
|
namespace wasm {
|
|
|
|
class InputSegment;
|
|
|
|
class OutputSegment {
|
|
public:
|
|
OutputSegment(StringRef n) : name(n) {}
|
|
|
|
void addInputSegment(InputChunk *inSeg);
|
|
void finalizeInputSegments();
|
|
// In most circumstances BSS segments don't need to be written
|
|
// to the output binary. However if the memory is imported, and
|
|
// we can't use memory.fill during startup (due to lack of bulk
|
|
// memory feature) then we include BSS segments verbatim.
|
|
bool requiredInBinary() const { return !isBss || config->emitBssSegments; }
|
|
|
|
bool isTLS() const { return name == ".tdata"; }
|
|
|
|
StringRef name;
|
|
bool isBss = false;
|
|
uint32_t index = 0;
|
|
uint32_t linkingFlags = 0;
|
|
uint32_t initFlags = 0;
|
|
uint32_t sectionOffset = 0;
|
|
uint32_t alignment = 0;
|
|
uint64_t startVA = 0;
|
|
std::vector<InputChunk *> inputSegments;
|
|
|
|
// Sum of the size of the all the input segments
|
|
uint32_t size = 0;
|
|
|
|
// Segment header
|
|
std::string header;
|
|
};
|
|
|
|
} // namespace wasm
|
|
} // namespace lld
|
|
|
|
#endif // LLD_WASM_OUTPUT_SEGMENT_H
|