2021-07-09 00:58:43 +02:00
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/*
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* Copyright (c) 2021, Gunnar Beutner <gbeutner@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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2021-08-28 09:37:07 -04:00
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.align 4
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.globl _invoke_entry
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.hidden _invoke_entry
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.type _invoke_entry,@function
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2021-07-09 00:58:43 +02:00
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_invoke_entry: # (argc, argv, envp, entry)
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addl $4, %esp # return address
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popl %edi # argc
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popl %esi # argv
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popl %edx # envp
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popl %ecx # entry
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// The System V ABI for x86 and x86_64 prescribes that the stack pointer is 16-byte aligned
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andl $~15, %esp
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// We're going to push three arguments so we need to align the stack for that
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subl $4, %esp
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// FIXME: The way we're setting up the stack and passing arguments to the entry point isn't ABI-compliant
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pushl %edx
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pushl %esi
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pushl %edi
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jmp *%ecx
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