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// Copyright 2015 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"
TEXT _rt0_arm64_linux(SB),NOSPLIT,$-8
MOVD 0(RSP), R0 // argc
ADD $8, RSP, R1 // argv
BL main(SB)
// When building with -buildmode=c-shared, this symbol is called when the shared
// library is loaded.
TEXT _rt0_arm64_linux_lib(SB),NOSPLIT,$88
// Preserve callee-save registers.
MOVD R19, 24(RSP)
MOVD R20, 32(RSP)
MOVD R21, 40(RSP)
MOVD R22, 48(RSP)
MOVD R23, 56(RSP)
MOVD R24, 64(RSP)
MOVD R25, 72(RSP)
MOVD R26, 80(RSP)
MOVD R27, 88(RSP)
MOVD R0, _rt0_arm64_linux_lib_argc<>(SB)
MOVD R1, _rt0_arm64_linux_lib_argv<>(SB)
// Synchronous initialization.
MOVD $runtime·libpreinit(SB), R4
BL (R4)
// Create a new thread to do the runtime initialization and return.
MOVD _cgo_sys_thread_create(SB), R4
CMP $0, R4
BEQ nocgo
MOVD $_rt0_arm64_linux_lib_go(SB), R0
MOVD $0, R1
BL (R4)
B restore
nocgo:
MOVD $0x800000, R0 // stacksize = 8192KB
MOVD $_rt0_arm64_linux_lib_go(SB), R1
MOVD R0, 8(RSP)
MOVD R1, 16(RSP)
MOVD $runtime·newosproc0(SB),R4
BL (R4)
restore:
// Restore callee-save registers.
MOVD 24(RSP), R19
MOVD 32(RSP), R20
MOVD 40(RSP), R21
MOVD 48(RSP), R22
MOVD 56(RSP), R23
MOVD 64(RSP), R24
MOVD 72(RSP), R25
MOVD 80(RSP), R26
MOVD 88(RSP), R27
RET
TEXT _rt0_arm64_linux_lib_go(SB),NOSPLIT,$0
MOVD _rt0_arm64_linux_lib_argc<>(SB), R0
MOVD _rt0_arm64_linux_lib_argv<>(SB), R1
MOVD $runtime·rt0_go(SB),R4
B (R4)
DATA _rt0_arm64_linux_lib_argc<>(SB)/8, $0
GLOBL _rt0_arm64_linux_lib_argc<>(SB),NOPTR, $8
DATA _rt0_arm64_linux_lib_argv<>(SB)/8, $0
GLOBL _rt0_arm64_linux_lib_argv<>(SB),NOPTR, $8
TEXT main(SB),NOSPLIT,$-8
MOVD $runtime·rt0_go(SB), R2
BL (R2)
exit:
MOVD $0, R0
MOVD $94, R8 // sys_exit
SVC
B exit
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