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// +build linux
6// +build mips64 mips64le
7
8#include "textflag.h"
9
10TEXT _rt0_mips64_linux(SB),NOSPLIT,$0
11	JMP	_main<>(SB)
12
13TEXT _rt0_mips64le_linux(SB),NOSPLIT,$0
14	JMP	_main<>(SB)
15
16TEXT _main<>(SB),NOSPLIT|NOFRAME,$0
17	// In a statically linked binary, the stack contains argc,
18	// argv as argc string pointers followed by a NULL, envv as a
19	// sequence of string pointers followed by a NULL, and auxv.
20	// There is no TLS base pointer.
21#ifdef GOARCH_mips64
22	MOVW	4(R29), R4 // argc, big-endian ABI places int32 at offset 4
23#else
24	MOVW	0(R29), R4 // argc
25#endif
26	ADDV	$8, R29, R5 // argv
27	JMP	main(SB)
28
29TEXT main(SB),NOSPLIT|NOFRAME,$0
30	// in external linking, glibc jumps to main with argc in R4
31	// and argv in R5
32
33	// initialize REGSB = PC&0xffffffff00000000
34	BGEZAL	R0, 1(PC)
35	SRLV	$32, R31, RSB
36	SLLV	$32, RSB
37
38	MOVV	$runtime·rt0_go(SB), R1
39	JMP	(R1)
40