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 mips mipsle 6 // +build !gccgo 7 8 #include "textflag.h" 9 10 TEXT RewindAndSetgid(SB),NOSPLIT,$-4-0 11 // Rewind stack pointer so anything that happens on the stack 12 // will clobber the test pattern created by the caller 13 ADDU $(1024*8), R29 14 15 // Ask signaller to setgid 16 MOVW $1, R1 17 SYNC 18 MOVW R1, Baton(SB) 19 SYNC 20 21 // Wait for setgid completion 22 loop: 23 SYNC 24 MOVW Baton(SB), R1 25 OR R2, R2, R2 // hint that we're in a spin loop 26 BNE R1, loop 27 SYNC 28 29 // Restore stack 30 ADDU $(-1024*8), R29 31 RET 32
