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378de1ae43
Unify the 386 entry point code as much as possible. The main function could not be unified because on Windows 386 it is called _main. Putting main in asm_386.s caused multiple definition errors when using the external linker. Add the _lib entry point to various operating systems. A future CL will enable c-archive/c-shared mode for those targets. Fix _rt0_386_windows_lib_go--it was passing arguments as though it were amd64. Change-Id: Ic73f1c95cdbcbea87f633f4a29bbc218a5db4f58 Reviewed-on: https://go-review.googlesource.com/70530 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Austin Clements <austin@google.com>
48 lines
1.3 KiB
ArmAsm
48 lines
1.3 KiB
ArmAsm
// Copyright 2009 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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TEXT _rt0_386_windows(SB),NOSPLIT,$0
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JMP _rt0_386(SB)
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// When building with -buildmode=(c-shared or c-archive), this
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// symbol is called. For dynamic libraries it is called when the
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// library is loaded. For static libraries it is called when the
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// final executable starts, during the C runtime initialization
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// phase.
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TEXT _rt0_386_windows_lib(SB),NOSPLIT,$0x1C
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MOVL BP, 0x08(SP)
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MOVL BX, 0x0C(SP)
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MOVL AX, 0x10(SP)
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MOVL CX, 0x14(SP)
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MOVL DX, 0x18(SP)
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// Create a new thread to do the runtime initialization and return.
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MOVL _cgo_sys_thread_create(SB), AX
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MOVL $_rt0_386_windows_lib_go(SB), 0x00(SP)
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MOVL $0, 0x04(SP)
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// Top two items on the stack are passed to _cgo_sys_thread_create
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// as parameters. This is the calling convention on 32-bit Windows.
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CALL AX
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MOVL 0x08(SP), BP
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MOVL 0x0C(SP), BX
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MOVL 0x10(SP), AX
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MOVL 0x14(SP), CX
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MOVL 0x18(SP), DX
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RET
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TEXT _rt0_386_windows_lib_go(SB),NOSPLIT,$0
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PUSHL $0
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PUSHL $0
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JMP runtime·rt0_go(SB)
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TEXT _main(SB),NOSPLIT,$0
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// Remove the return address from the stack.
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// rt0_go doesn't expect it to be there.
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ADDL $4, SP
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JMP runtime·rt0_go(SB)
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