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Ayke van Laethem
df0f5ae1da
This was actually surprising once I got TinyGo to build on Windows 11 ARM64. All the changes are exactly what you'd expect for a new architecture, there was no special weirdness just for arm64. Actually getting TinyGo to build was kind of involved though. The very short summary is: install arm64 versions of some pieces of software (like golang, cmake) instead of installing them though choco. In particular, use the llvm-mingw[1] toolchain instead of using standard mingw. [1]: https://github.com/mstorsjo/llvm-mingw/releases
37 lines
1.0 KiB
ArmAsm
37 lines
1.0 KiB
ArmAsm
.section .text.tinygo_scanCurrentStack,"ax"
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.global tinygo_scanCurrentStack
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tinygo_scanCurrentStack:
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// Sources:
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// * https://learn.microsoft.com/en-us/cpp/build/arm64-windows-abi-conventions?view=msvc-170
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// * https://godbolt.org/z/foc1xncvb
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// Save callee-saved registers.
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stp x29, x30, [sp, #-160]!
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stp x28, x27, [sp, #16]
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stp x26, x25, [sp, #32]
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stp x24, x23, [sp, #48]
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stp x22, x21, [sp, #64]
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stp x20, x19, [sp, #80]
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stp d8, d9, [sp, #96]
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stp d10, d11, [sp, #112]
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stp d12, d13, [sp, #128]
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stp d14, d15, [sp, #144]
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// Scan the stack.
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mov x0, sp
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bl tinygo_scanstack
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// Restore stack state and return.
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ldp x29, x30, [sp], #160
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ret
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.section .text.tinygo_longjmp,"ax"
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.global tinygo_longjmp
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tinygo_longjmp:
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// Note: the code we jump to assumes x0 is set to a non-zero value if we
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// jump from here (which is conveniently already the case).
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ldp x1, x2, [x0] // jumpSP, jumpPC
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mov sp, x1
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br x2
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