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https://github.com/sliverarmory/reflektor
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moloch--
26 lines
691 B
Go
26 lines
691 B
Go
//go:build linux && !android && arm && arm.7
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package bofloader
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import (
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"fmt"
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"golang.org/x/sys/unix"
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)
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// Linux reserves this ARM-private syscall number for cacheflush. Unlike a
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// libgcc __clear_cache lookup, it is available without CGO or an extra DSO.
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const linuxARMCacheflush = 0x0f0002
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func (region *memoryRegion) flushInstructionCache(offset, length int) error {
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if _, err := region.rangeBytes(offset, length); err != nil || length == 0 {
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return err
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}
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start := region.base() + uintptr(offset)
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_, _, errno := unix.Syscall(linuxARMCacheflush, start, start+uintptr(length), 0)
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if errno != 0 {
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return fmt.Errorf("cacheflush executable memory: %w", errno)
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}
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return nil
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}
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