1// Copyright 2015 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 linux && (mips64 || mips64le)
6
7#include "textflag.h"
8
9TEXT _rt0_mips64_linux(SB),NOSPLIT,$0
10	JMP	_main<>(SB)
11
12TEXT _rt0_mips64le_linux(SB),NOSPLIT,$0
13	JMP	_main<>(SB)
14
15TEXT _main<>(SB),NOSPLIT|NOFRAME,$0
16	// In a statically linked binary, the stack contains argc,
17	// argv as argc string pointers followed by a NULL, envv as a
18	// sequence of string pointers followed by a NULL, and auxv.
19	// There is no TLS base pointer.
20#ifdef GOARCH_mips64
21	MOVW	4(R29), R4 // argc, big-endian ABI places int32 at offset 4
22#else
23	MOVW	0(R29), R4 // argc
24#endif
25	ADDV	$8, R29, R5 // argv
26	JMP	main(SB)
27
28TEXT main(SB),NOSPLIT|NOFRAME,$0
29	// in external linking, glibc jumps to main with argc in R4
30	// and argv in R5
31
32	// initialize REGSB = PC&0xffffffff00000000
33	BGEZAL	R0, 1(PC)
34	SRLV	$32, R31, RSB
35	SLLV	$32, RSB
36
37	MOVV	$runtime·rt0_go(SB), R1
38	JMP	(R1)
39