| // Copyright 2014 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_arm_darwin(SB),7,$-4 |
| // prepare arguments for main (_rt0_go) |
| MOVW (R13), R0 // argc |
| MOVW $4(R13), R1 // argv |
| MOVW $main(SB), R4 |
| B (R4) |
| |
| // 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/arm platforms require |
| // cgo and do not support c-shared. |
| TEXT _rt0_arm_darwin_lib(SB),NOSPLIT,$32 |
| // Preserve callee-save registers. |
| MOVW R4, 12(R13) |
| MOVW R5, 16(R13) |
| MOVW R6, 20(R13) |
| MOVW R7, 24(R13) |
| MOVW R8, 28(R13) |
| MOVW R11, 32(R13) |
| |
| MOVW R0, _rt0_arm_darwin_lib_argc<>(SB) |
| MOVW R1, _rt0_arm_darwin_lib_argv<>(SB) |
| |
| // Synchronous initialization. |
| MOVW $runtime·libpreinit(SB), R3 |
| CALL (R3) |
| |
| // Create a new thread to do the runtime initialization and return. |
| MOVW _cgo_sys_thread_create(SB), R3 |
| CMP $0, R3 |
| B.EQ nocgo |
| MOVW $_rt0_arm_darwin_lib_go(SB), R0 |
| MOVW $0, R1 |
| BL (R3) |
| B rr |
| nocgo: |
| MOVW $0x400000, R0 |
| MOVW R0, (R13) // stacksize |
| MOVW $_rt0_arm_darwin_lib_go(SB), R0 |
| MOVW R0, 4(R13) // fn |
| MOVW $0, R0 |
| MOVW R0, 8(R13) // fnarg |
| MOVW $runtime·newosproc0(SB), R3 |
| BL (R3) |
| rr: |
| // Restore callee-save registers and return. |
| MOVW 12(R13), R4 |
| MOVW 16(R13), R5 |
| MOVW 20(R13), R6 |
| MOVW 24(R13), R7 |
| MOVW 28(R13), R8 |
| MOVW 32(R13), R11 |
| RET |
| |
| |
| TEXT _rt0_arm_darwin_lib_go(SB),NOSPLIT,$0 |
| MOVW _rt0_arm_darwin_lib_argc<>(SB), R0 |
| MOVW _rt0_arm_darwin_lib_argv<>(SB), R1 |
| MOVW R0, (R13) |
| MOVW R1, 4(R13) |
| MOVW $runtime·rt0_go(SB), R4 |
| B (R4) |
| |
| DATA _rt0_arm_darwin_lib_argc<>(SB)/4, $0 |
| GLOBL _rt0_arm_darwin_lib_argc<>(SB),NOPTR, $4 |
| DATA _rt0_arm_darwin_lib_argv<>(SB)/4, $0 |
| GLOBL _rt0_arm_darwin_lib_argv<>(SB),NOPTR, $4 |
| |
| TEXT main(SB),NOSPLIT,$-8 |
| // save argc and argv onto stack |
| MOVM.DB.W [R0-R1], (R13) |
| MOVW $runtime·rt0_go(SB), R4 |
| B (R4) |
