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https://github.com/RGBCube/serenity
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f6ad5edab0
Here's the first time we get a taste of better information than the real hardware can give us: unlike x86 CPUs, we can actually support write-only memory, so now we do! While this isn't immediately useful, it's still pretty cool. :^)
84 lines
2.7 KiB
C++
84 lines
2.7 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "SoftCPU.h"
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#include "SoftMMU.h"
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#include <AK/Types.h>
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#include <LibELF/Loader.h>
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#include <LibX86/Instruction.h>
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#include <sys/types.h>
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namespace UserspaceEmulator {
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class Emulator {
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public:
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static Emulator& the();
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Emulator(const Vector<String>& arguments, NonnullRefPtr<ELF::Loader>);
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bool load_elf();
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void dump_backtrace();
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int exec();
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u32 virt_syscall(u32 function, u32 arg1, u32 arg2, u32 arg3);
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SoftMMU& mmu() { return m_mmu; }
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private:
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NonnullRefPtr<ELF::Loader> m_elf;
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SoftMMU m_mmu;
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SoftCPU m_cpu;
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void setup_stack(const Vector<String>& arguments);
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u32 virt$mmap(u32);
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u32 virt$gettid();
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u32 virt$getpid();
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u32 virt$unveil(u32);
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u32 virt$pledge(u32);
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uid_t virt$getuid();
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gid_t virt$getgid();
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u32 virt$read(int, FlatPtr, ssize_t);
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u32 virt$write(int, FlatPtr, ssize_t);
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u32 virt$mprotect(FlatPtr, size_t, int);
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u32 virt$madvise(FlatPtr, size_t, int);
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u32 virt$open(u32);
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int virt$close(int);
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int virt$get_process_name(FlatPtr buffer, int size);
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int virt$fstat(int, FlatPtr);
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u32 virt$fcntl(int fd, int, u32);
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int virt$getgroups(ssize_t count, FlatPtr);
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int virt$lseek(int fd, off_t offset, int whence);
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void virt$exit(int);
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bool m_shutdown { false };
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int m_exit_status { 0 };
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};
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}
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