Generate position independent code #50
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This commit removes unused `#addPreDependencyOf:on:` and `#addPostDependencyOf:on:` from `TRRegisterDependencies`
This commit moves `TRCompilationTestShell` and subclasses to category "Tinyrossa-Tests-Shells", removing "-SmalltalkX". These classes are no longer Smalltalk/X specific.
This commit removes `compilation` instvar introduced in commit 84b2519 "Implement `TRCompilationTestShell >> #call` and `#call:`". In a hindsight, this does not seem proper. We need to be able to test compilation of multiple functions calling each other, so the there'll be "multiple compilations". Removing `compilation` from shell prompted refactoring of `call`, `call:` and `call:_:` utility methods - they need to take `compilation` as a first parameter. While at it, split code injection and call to actual function into two method to facilitate tests with multiple functions.
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CI fails because missing support for relocations in ArchC |
This commit uses symbols (sub-instances of `TRSymbol`) as labels rather than just plain strings. This is a preparation for using (function) symbols exports.
This is a preparation for introducing `TRRuntime` and related classes that will also make use of target. So it is no longer just target for compilation.
This commit introduces a `TRRuntime`, a class that provides an entry point for runtime services. Downstream projects (if any) may (should) provide customized subclass. Note that "runtime" is only useful / used in JIT scenarios.
This commit adds new class - `TRCodeCache` - that implements simple runtime code cache to put compiled code (result of compilation) for later execution. Downstream project may need to provide customized implementations of code cache fitting the needs of particular runtime. `TRCodeCache` should serves (i) as example implementation, (ii) possibly as a base class for downstream projects and finally (iii) as code cache implementation to be used in tests. As of now, the implementation is fairly simple. Its functionality will be expanded in further commits.
This commit makes use of `TRCodeCache` introduced in previous commit. This is a necessary step for writing tests that compile multiple functions and/or refer to external (relocatable) symbols.
This tests compilation of relocatable calls.
This commit changes `TRRV64GSystemLinkage` to compile relocatable calls using pair of `auipc` and `jalr` with `R_RISCV_CALL_PLT` relocation.
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This commit adds basic support for generating position independent code.
The idea is that a result of single compilation is always "position independent". It is the responsibility of
"runtime" to properly link together. This means compiler has to provide relocation when necessary.
Just like with shingarov/Pharo-ArchC#39, this is work in progress. I need to get bit more hands-on experience with compiling "real code" (that is, AoT)