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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"
#include "cgo/abi_arm64.h"
TEXT _rt0_arm64_darwin(SB),NOSPLIT|NOFRAME,$0
MOVD $runtime·rt0_go(SB), R2
BL (R2)
exit:
MOVD $0, R0
MOVD $1, R16 // sys_exit
SVC $0x80
B exit
// When linking with -buildmode=c-archive or -buildmode=c-shared,
// this symbol is called from a global initialization function.
//
// Note that all currently shipping darwin/arm64 platforms require
// cgo and do not support c-shared.
TEXT _rt0_arm64_darwin_lib(SB),NOSPLIT,$152
// Preserve callee-save registers.
SAVE_R19_TO_R28(8)
SAVE_F8_TO_F15(88)
MOVD R0, _rt0_arm64_darwin_lib_argc<>(SB)
MOVD R1, _rt0_arm64_darwin_lib_argv<>(SB)
MOVD $0, g // initialize g to nil
// 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
MOVD $_rt0_arm64_darwin_lib_go(SB), R0
MOVD $0, R1
SUB $16, RSP // reserve 16 bytes for sp-8 where fp may be saved.
BL (R4)
ADD $16, RSP
// Restore callee-save registers.
RESTORE_R19_TO_R28(8)
RESTORE_F8_TO_F15(88)
RET
TEXT _rt0_arm64_darwin_lib_go(SB),NOSPLIT,$0
MOVD _rt0_arm64_darwin_lib_argc<>(SB), R0
MOVD _rt0_arm64_darwin_lib_argv<>(SB), R1
MOVD $runtime·rt0_go(SB), R4
B (R4)
DATA _rt0_arm64_darwin_lib_argc<>(SB)/8, $0
GLOBL _rt0_arm64_darwin_lib_argc<>(SB),NOPTR, $8
DATA _rt0_arm64_darwin_lib_argv<>(SB)/8, $0
GLOBL _rt0_arm64_darwin_lib_argv<>(SB),NOPTR, $8
// external linking entry point.
TEXT main(SB),NOSPLIT|NOFRAME,$0
JMP _rt0_arm64_darwin(SB)
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