mirror of
https://github.com/tinygo-org/tinygo.git
synced 2026-08-07 20:43:40 +00:00
Ayke van Laethem
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.
18 lines
297 B
Go
18 lines
297 B
Go
package runtime
|
|
|
|
import "device"
|
|
|
|
const GOARCH = "386"
|
|
|
|
// The bitness of the CPU (e.g. 8, 32, 64).
|
|
const TargetBits = 32
|
|
|
|
// Align on word boundary.
|
|
func align(ptr uintptr) uintptr {
|
|
return (ptr + 3) &^ 3
|
|
}
|
|
|
|
func getCurrentStackPointer() uintptr {
|
|
return device.AsmFull("movl %esp, {}", nil)
|
|
}
|