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// Copyright 2016 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. //go:build gc #include "textflag.h" TEXT ·RewindAndSetgid(SB),NOSPLIT,$0-0 // Rewind stack pointer so anything that happens on the stack // will clobber the test pattern created by the caller ADD $(1024 * 8), R15 // Ask signaller to setgid MOVD $·Baton(SB), R5 MOVW $1, 0(R5) // Wait for setgid completion loop: SYNC MOVW ·Baton(SB), R3 CMPBNE R3, $0, loop // Restore stack SUB $(1024 * 8), R15 RET