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https://github.com/golang/go
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beeabbcb25
This replaces frame size -8 with the NOFRAME flag in arm64 assembly. This was automated with: sed -i -e 's/\(^TEXT.*[A-Z]\),\( *\)\$-8/\1|NOFRAME,\2$0/' $(find -name '*_arm64.s') Plus a manual fix to mkduff.go. The go binary is identical before and after this change. Change-Id: I0310384d1a584118c41d1cd3a042bb8ea7227efa Reviewed-on: https://go-review.googlesource.com/92043 Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com>
91 lines
2.2 KiB
ArmAsm
91 lines
2.2 KiB
ArmAsm
// Copyright 2015 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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#include "textflag.h"
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// No need for _rt0_arm64_darwin as darwin/arm64 only
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// supports external linking.
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TEXT _rt0_arm64_darwin(SB),NOSPLIT|NOFRAME,$0
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MOVD $42, R0
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MOVD $1, R16 // SYS_exit
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SVC $0x80
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// When linking with -buildmode=c-archive or -buildmode=c-shared,
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// this symbol is called from a global initialization function.
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//
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// Note that all currently shipping darwin/arm64 platforms require
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// cgo and do not support c-shared.
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TEXT _rt0_arm64_darwin_lib(SB),NOSPLIT,$168
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// Preserve callee-save registers.
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MOVD R19, 24(RSP)
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MOVD R20, 32(RSP)
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MOVD R21, 40(RSP)
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MOVD R22, 48(RSP)
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MOVD R23, 56(RSP)
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MOVD R24, 64(RSP)
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MOVD R25, 72(RSP)
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MOVD R26, 80(RSP)
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MOVD R27, 88(RSP)
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FMOVD F8, 96(RSP)
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FMOVD F9, 104(RSP)
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FMOVD F10, 112(RSP)
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FMOVD F11, 120(RSP)
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FMOVD F12, 128(RSP)
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FMOVD F13, 136(RSP)
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FMOVD F14, 144(RSP)
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FMOVD F15, 152(RSP)
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MOVD R0, _rt0_arm64_darwin_lib_argc<>(SB)
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MOVD R1, _rt0_arm64_darwin_lib_argv<>(SB)
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// Synchronous initialization.
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MOVD $runtime·libpreinit(SB), R4
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BL (R4)
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// Create a new thread to do the runtime initialization and return.
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MOVD _cgo_sys_thread_create(SB), R4
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MOVD $_rt0_arm64_darwin_lib_go(SB), R0
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MOVD $0, R1
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BL (R4)
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// Restore callee-save registers.
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MOVD 24(RSP), R19
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MOVD 32(RSP), R20
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MOVD 40(RSP), R21
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MOVD 48(RSP), R22
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MOVD 56(RSP), R23
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MOVD 64(RSP), R24
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MOVD 72(RSP), R25
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MOVD 80(RSP), R26
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MOVD 88(RSP), R27
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FMOVD 96(RSP), F8
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FMOVD 104(RSP), F9
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FMOVD 112(RSP), F10
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FMOVD 120(RSP), F11
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FMOVD 128(RSP), F12
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FMOVD 136(RSP), F13
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FMOVD 144(RSP), F14
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FMOVD 152(RSP), F15
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RET
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TEXT _rt0_arm64_darwin_lib_go(SB),NOSPLIT,$0
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MOVD _rt0_arm64_darwin_lib_argc<>(SB), R0
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MOVD _rt0_arm64_darwin_lib_argv<>(SB), R1
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MOVD $runtime·rt0_go(SB), R4
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B (R4)
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DATA _rt0_arm64_darwin_lib_argc<>(SB)/8, $0
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GLOBL _rt0_arm64_darwin_lib_argc<>(SB),NOPTR, $8
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DATA _rt0_arm64_darwin_lib_argv<>(SB)/8, $0
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GLOBL _rt0_arm64_darwin_lib_argv<>(SB),NOPTR, $8
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TEXT main(SB),NOSPLIT|NOFRAME,$0
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MOVD $runtime·rt0_go(SB), R2
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BL (R2)
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exit:
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MOVD $0, R0
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MOVD $1, R16 // sys_exit
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SVC $0x80
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B exit
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