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2022-08-05program: remove now unused uc_program_export_lookup()Jo-Philipp Wich
Since we track the offsets in the compiler directly now there's no need to keep this function. Signed-off-by: Jo-Philipp Wich <jo@mein.io>
2022-08-05program: add serialization and deserialization for module function flagJo-Philipp Wich
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
2022-07-30program: add function to globally lookup exported nameJo-Philipp Wich
Add a helper function to query the global index of a named export within a specific source which is a prerequisite for compiling import statements. Signed-off-by: Jo-Philipp Wich <jo@mein.io>
2022-07-30program: add infrastructure to handle multiple sources per programJo-Philipp Wich
The upcoming module support requires maintaining multiple source objects within the same program, so add the necessary infrastructure for it. Signed-off-by: Jo-Philipp Wich <jo@mein.io>
2022-07-30program: fix reporting source position of first instructionJo-Philipp Wich
We must always report the chunk source position relative to the function start offset, even if it is zero. Signed-off-by: Jo-Philipp Wich <jo@mein.io>
2022-07-30program: fix en/decoding debuginfo upvalue slots in precompiled bytecodeJo-Philipp Wich
The sizeof(size_t) might differ from the sizeof(uint32_t) used to serialize compiled bytecode, so extra care is needed to properly encode and decode upvalue slot values which are defined as (size_t)-1 / 2 + n. Signed-off-by: Jo-Philipp Wich <jo@mein.io>
2022-02-07treewide: rework function memory modelJo-Philipp Wich
- Instead of treating individual program functions as managed ucode types, demote uc_function_t values to pointers into a uc_program_t entity - Promote uc_program_t to a managed type - Let uc_closure_t claim references to the owning program of the enclosed uc_function_t - Redefine public APIs uc_compile() and uc_vm_execute() APIs to return and expect an uc_program_t object respectively - Remove vallist indirection for function loading and let the compiler emit the function id directly when producing function construction code Signed-off-by: Jo-Philipp Wich <jo@mein.io>
2022-01-29program: rename bytecode load/write functions, track path of executed fileJo-Philipp Wich
Extend source objects with a `runpath` field which contains the original path of the source being executed by the VM. When instantiating source objects from file paths, the `runpath` will be set to the `filename`. When instantiating source buffers using `uc_source_new_buffer()`, the runpath is initially unset. A new function `uc_source_runpath_set()` can be used to adjust the runtime path being associated with a source object. Extend bytecode loading logic to set the source buffer runtime path to the precompiled bytecode file path being loaded and executed. This is required for `sourcepath()` and relative paths in `include()` to function correctly when executing precompiled programs. Finally rename `uc_program_from_file()` and `uc_program_to_file()` to `uc_program_load()` and `uc_program_write()` respectively since the load part now operates on an `uc_source_t` input buffer instead of a plain `FILE *` handle. Adjust users of these API functions accordingly. Signed-off-by: Jo-Philipp Wich <jo@mein.io>
2022-01-18program: implement support for precompiling source filesJo-Philipp Wich
- Introduce new command line flags `-o` and `-O` to write compiled program code into the specified output file - Add support for transparently executing precompiled files, the lexical analyzing and com,pilation phase is skipped in this case Signed-off-by: Jo-Philipp Wich <jo@mein.io>
2022-01-18source: refactor source file handlingJo-Philipp Wich
- Move source object pointer into program entity which is referenced by each function - Move lineinfo related routines into source.c and use them from lexer.c since lineinfo encoding does not belong into the lexical analyzer. - Implement initial infrastructure for detecting source file type, this is required later to differentiate between plaintext and precompiled bytecode files Signed-off-by: Jo-Philipp Wich <jo@mein.io>
2022-01-18compiler, vm: use a program wide constant listJo-Philipp Wich
Instead of storing constant values per function, maintain a global program wide list for all constant values within the current compilation unit. Signed-off-by: Jo-Philipp Wich <jo@mein.io>
2022-01-18types: add initial infrastructure for function serializationJo-Philipp Wich
- Introduce a new "program" entity which holds the list of functions created during compilation - Instead of storing pointers to the in-memory function representation in the constant list, store the index of the function within the program's function list - When loading functions from the constant list, retrieve the function by index from the program entity Signed-off-by: Jo-Philipp Wich <jo@mein.io>