github.com/bir3/gocompiler@v0.9.2202/src/cmd/cgo/internal/test/issue9400/asm_mipsx.s (about)

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