1 // Copyright 2014 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 #include "textflag.h" 6 7 TEXT _rt0_arm_darwin(SB),7,$-4 8 // prepare arguments for main (_rt0_go) 9 MOVW (R13), R0 // argc 10 MOVW $4(R13), R1 // argv 11 MOVW $main(SB), R4 12 B (R4) 13 14 // When linking with -buildmode=c-archive or -buildmode=c-shared, 15 // this symbol is called from a global initialization function. 16 // 17 // Note that all currently shipping darwin/arm platforms require 18 // cgo and do not support c-shared. 19 TEXT _rt0_arm_darwin_lib(SB),NOSPLIT,$12 20 MOVW R0, _rt0_arm_darwin_lib_argc<>(SB) 21 MOVW R1, _rt0_arm_darwin_lib_argv<>(SB) 22 23 // Create a new thread to do the runtime initialization and return. 24 MOVW _cgo_sys_thread_create(SB), R4 25 CMP $0, R4 26 B.EQ nocgo 27 MOVW $_rt0_arm_darwin_lib_go(SB), R0 28 MOVW $0, R1 29 BL (R4) 30 RET 31 nocgo: 32 MOVW $0x400000, R0 33 MOVW $_rt0_arm_darwin_lib_go(SB), R1 34 MOVW $0, R2 35 MOVW R0, (R13) // stacksize 36 MOVW R1, 4(R13) // fn 37 MOVW R2, 8(R13) // fnarg 38 MOVW $runtimenewosproc0(SB), R4 39 BL (R4) 40 RET 41 42 TEXT _rt0_arm_darwin_lib_go(SB),NOSPLIT,$0 43 MOVW _rt0_arm_darwin_lib_argc<>(SB), R0 44 MOVW _rt0_arm_darwin_lib_argv<>(SB), R1 45 MOVW R0, (R13) 46 MOVW R1, 4(R13) 47 MOVW $runtimert0_go(SB), R4 48 B (R4) 49 50 DATA _rt0_arm_darwin_lib_argc<>(SB)/4, $0 51 GLOBL _rt0_arm_darwin_lib_argc<>(SB),NOPTR, $4 52 DATA _rt0_arm_darwin_lib_argv<>(SB)/4, $0 53 GLOBL _rt0_arm_darwin_lib_argv<>(SB),NOPTR, $4 54 55 TEXT main(SB),NOSPLIT,$-8 56 // save argc and argv onto stack 57 MOVM.DB.W [R0-R1], (R13) 58 MOVW $runtimert0_go(SB), R4 59 B (R4) 60
