blob: fcd212eb8e952e0880c1366a9bf53589bb3b8188 [file] [log] [blame]
// Copyright 2012 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.
#include "textflag.h"
/*
* void crosscall2(void (*fn)(void*, int32), void*, int32)
* Save registers and call fn with two arguments.
*/
TEXT crosscall2(SB),NOSPLIT,$-4
/*
* We still need to save all callee save register as before, and then
* push 2 args for fn (R1 and R2).
* Also note that at procedure entry in 5c/5g world, 4(R13) will be the
* first arg, so we must push another dummy reg (R0) for 0(R13).
* Additionally, runtimeĀ·load_g will clobber R0, so we need to save R0
* nevertheless.
*/
MOVM.WP [R0, R1, R2, R4, R5, R6, R7, R8, R9, g, R11, R12, R14], (R13)
BL runtimeĀ·load_g(SB)
MOVW R15, R14 // R15 is PC.
MOVW 0(R13), R15
MOVM.IAW (R13), [R0, R1, R2, R4, R5, R6, R7, R8, R9, g, R11, R12, R15]