Retro68/gcc/libgo/misc/cgo/test/issue9400/asm_mipsx.s
Wolfgang Thaller 6fbf4226da gcc-9.1
2019-06-20 20:10:10 +02:00

32 lines
668 B
ArmAsm

// 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.
// +build mips mipsle
// +build !gccgo
#include "textflag.h"
TEXT ·RewindAndSetgid(SB),NOSPLIT|NOFRAME,$0-0
// Rewind stack pointer so anything that happens on the stack
// will clobber the test pattern created by the caller
ADDU $(1024*8), R29
// Ask signaller to setgid
MOVW $1, R1
SYNC
MOVW R1, ·Baton(SB)
SYNC
// Wait for setgid completion
loop:
SYNC
MOVW ·Baton(SB), R1
OR R2, R2, R2 // hint that we're in a spin loop
BNE R1, loop
SYNC
// Restore stack
ADDU $(-1024*8), R29
RET