c3032660c9
The wasm build tag together with GOARCH=arm was causing problems in the internal/cpu package. In general, I think having two architecture build tag will only cause problems (in this case, wasm and arm) so I've removed the wasm build tag and replaced it with tinygo.wasm. This is similar to the tinygo.riscv build tag, which is used for older Go versions that don't yet have RISC-V support in the standard library (and therefore pretend to be GOARCH=arm instead).
40 строки
1,2 КиБ
Go
40 строки
1,2 КиБ
Go
// +build gc.conservative gc.extalloc
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// +build !tinygo.wasm
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package runtime
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import "internal/task"
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// markStack marks all root pointers found on the stack.
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//
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// This implementation is conservative and relies on the stack top (provided by
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// the linker) and getting the current stack pointer from a register. Also, it
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// assumes a descending stack. Thus, it is not very portable.
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func markStack() {
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// Scan the current stack, and all current registers.
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scanCurrentStack()
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if !task.OnSystemStack() {
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// Mark system stack.
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markRoots(getSystemStackPointer(), stackTop)
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}
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}
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//go:export tinygo_scanCurrentStack
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func scanCurrentStack()
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//go:export tinygo_scanstack
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func scanstack(sp uintptr) {
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// Mark current stack.
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// This function is called by scanCurrentStack, after pushing all registers onto the stack.
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// Callee-saved registers have been pushed onto stack by tinygo_localscan, so this will scan them too.
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if task.OnSystemStack() {
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// This is the system stack.
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// Scan all words on the stack.
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markRoots(sp, stackTop)
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} else {
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// This is a goroutine stack.
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// It is an allocation, so scan it as if it were a value in a global.
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markRoot(0, sp)
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}
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}
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