首页下载资源后端基于栈的虚拟机，可执行字节码

ZIP基于栈的虚拟机，可执行字节码

fuchenyang0119.1KB需要积分:1

资源文件列表:

BytecodeVM-master.zip 大约有27个文件
  1. BytecodeVM-master/
  2. BytecodeVM-master/.gitignore 627B
  3. BytecodeVM-master/LICENSE.md 1.05KB
  4. BytecodeVM-master/Programs/
  5. BytecodeVM-master/Programs/DynamicAlloc/
  6. BytecodeVM-master/Programs/DynamicAlloc/DynAlloc.bca 223B
  7. BytecodeVM-master/Programs/Functions/
  8. BytecodeVM-master/Programs/Functions/Functions.bca 1.42KB
  9. BytecodeVM-master/Programs/Functions/Functions.bce 389B
  10. BytecodeVM-master/Programs/Functions/Functions.pseudo 333B
  11. BytecodeVM-master/Programs/HelloWorld/
  12. BytecodeVM-master/Programs/HelloWorld/HelloWorld.bca 709B
  13. BytecodeVM-master/Programs/HelloWorld/HelloWorld.bce 161B
  14. BytecodeVM-master/README.md 2.76KB
  15. BytecodeVM-master/build/
  16. BytecodeVM-master/build/genie.lua 1.28KB
  17. BytecodeVM-master/source/
  18. BytecodeVM-master/source/AssemblyCompiler.cpp 12.63KB
  19. BytecodeVM-master/source/AssemblyCompiler.h 1.3KB
  20. BytecodeVM-master/source/AtomicTypes.h 339B
  21. BytecodeVM-master/source/Opcode.cpp 276B
  22. BytecodeVM-master/source/Opcode.h 1.18KB
  23. BytecodeVM-master/source/SymbolTable.cpp 3.99KB
  24. BytecodeVM-master/source/SymbolTable.h 1.21KB
  25. BytecodeVM-master/source/VirtualMachine.cpp 19.67KB
  26. BytecodeVM-master/source/VirtualMachine.h 1.73KB
  27. BytecodeVM-master/source/main.cpp 3.65KB

资源介绍:

定义了基础的字节码，可以读取并且识别字节码，并用栈机执行，可用于开发自己的脚本语言
# BytecodeVM A basic Virtual machine operating on bytecode. It operates on a stack and shares memory for instructions and data (van neumann architecture). It can compile to a binary file and run from a file, or compile and run directly from the assembly file. Currently a command line program but I plan to integrate it into ETEngine as a visual node based programming language. Commands: * compile [filename.bca] compiles a .bca assembly file to a binary .bce executable * run [filename.bce] runs a bytecode executable file * cRun [filename.bca] compiles and directly runs an assembly file without saving the executable ### Instruction Set | Opcode | Description | |:----------:|-------------| | LITERAL | Push next 4 bytes | | LITERAL_ARRAY | Get x from next 4 bytes; Push x sets of 4 bytes - temporary | | LOAD ; LOAD_ARG ; LOAD_LCL | Pop a; Push RAM[a] | | STORE ; STORE_LCL | Pop b; Pop a; RAM[b] = a | | ADD | Pop b; Pop a; Push a + b | | SUB | Pop b; Pop a; Push a - b | | LESS | Pop b; Pop a; Push a < b | | GREATER | Pop b; Pop a; Push a > b | | NOT | Pop a; Push !a | | EQUALS | Pop b; Pop a; Push a == b | | JMP | Pop a; goto a; | | JMP_IF | Pop b; Pop a; if a goto b | | CALL | put current state in a stack frame; store RTN; Pop a; goto a; | | RETURN | Restore to previous stack frame; append working stack; goto RTN | | PRINT | Pop x; for x Print Pop - temporary, will be a library function based on null terminated strings | | PRINT_INT | Pop a; Print string of a | | PRINT_ENDL | Start a new line in console | LOAD and STORE have segment modifiers that can be used as base addresses within functions | Segment | Description | |:----------:|-------------| | LCL | pointer to first local variable | | ARG | pointer to first argument | | Variable Type | Description | |:----------:|-------------| | static | a fixed address variable, referenced directly | | argument | a variable that sits in the working stack of the previous function's frame | | local | a local variable within the stack frame of the current function | There is no concept of scope so all variables should be unique Variables are declared implicitly upon their first occurance with the exception of arguments Variables declared before the first function are static, after the first function they are local The assembler also features Symbols (variables and labels) * Variables start with # and are statically allocated at compile time * Jump labels start with @ * Subroutines start with $ and are followed by argument declarations ### Planned I plan to add: * indexed library function support (executes function at pushed index) * Dynamic memory allocation * Support for standard types int float char bool (maybe short, long, double etc) unsigned or signed * Built in support for variable length arrays, strings and vectors
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