67de8b490d
The only architecture that actually needs special support for scanning the stack is WebAssembly. All others allow raw access to the stack with a small bit of assembly. Therefore, don't manually keep track of all these objects on the stack manually and instead just use conservative stack scanning. This results in a massive code size decrease in the affected targets (only tested linux/amd64 for code size) - sometimes around 33%. It also allows for future improvements such as using proper stackful goroutines.
19 строки
420 Б
Go
19 строки
420 Б
Go
package runtime
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import "device"
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const GOARCH = "amd64"
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// The bitness of the CPU (e.g. 8, 32, 64).
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const TargetBits = 64
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// Align a pointer.
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// Note that some amd64 instructions (like movaps) expect 16-byte aligned
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// memory, thus the result must be 16-byte aligned.
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func align(ptr uintptr) uintptr {
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return (ptr + 15) &^ 15
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}
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func getCurrentStackPointer() uintptr {
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return device.AsmFull("movq %rsp, {}", nil)
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}
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