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https://github.com/tinygo-org/tinygo.git
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Jake Bailey
29b4c6723f
Modify the Unix signal handler to redirect execution to a Go sigpanic function instead of printing an error and re-raising the signal. The C signal handler modifies the ucontext to make the faulting instruction appear to have called tinygo_sigpanic, which then calls runtimePanic with the appropriate message. Supported on all architectures TinyGo targets on Linux and Darwin: x86_64, i386, aarch64, ARM, and MIPS. Also registers SIGFPE, which was previously not handled at all.
30 lines
611 B
Go
30 lines
611 B
Go
package runtime
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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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const deferExtraRegs = 0
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const callInstSize = 5 // "call someFunction" is 5 bytes
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const (
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linux_MAP_ANONYMOUS = 0x20
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linux_SIGBUS = 7
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linux_SIGFPE = 8
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linux_SIGILL = 4
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linux_SIGSEGV = 11
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)
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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 uintptr(stacksave())
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}
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