1 // Copyright 2016 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 // +build !gccgo 6 7 #include "textflag.h" 8 9 TEXT RewindAndSetgid(SB),NOSPLIT,$0-0 10 // Rewind stack pointer so anything that happens on the stack 11 // will clobber the test pattern created by the caller 12 ADD $(1024 * 8), R15 13 14 // Ask signaller to setgid 15 MOVD $Baton(SB), R5 16 MOVW $1, 0(R5) 17 18 // Wait for setgid completion 19 loop: 20 SYNC 21 MOVW Baton(SB), R3 22 CMPBNE R3, $0, loop 23 24 // Restore stack 25 SUB $(1024 * 8), R15 26 RET 27
