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42ced88424
The stack of Unix-like (GCC) system should be aligned on 16-byte boundary according to the x86-32 ABI specification.
38 lines
1.2 KiB
ArmAsm
38 lines
1.2 KiB
ArmAsm
/*
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* Copyright (C) 2019 Intel Corporation. All rights reserved.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*/
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.text
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.align 2
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#ifndef BH_PLATFORM_DARWIN
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.globl invokeNative
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.type invokeNative, @function
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invokeNative:
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#else
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.globl _invokeNative
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_invokeNative:
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#endif /* end of BH_PLATFORM_DARWIN */
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push %ebp
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movl %esp, %ebp
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movl 16(%ebp), %ecx /* ecx = argc */
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leal 2(%ecx), %edx /* edx = ecx + 2 (count return address and saved ebp) */
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andl $3, %edx /* edx = edx % 4 */
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jz stack_aligned /* if edx == 0, stack is already 16 bytes aligned */
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leal -16(%esp, %edx, 4), %esp /* esp = esp - 16 + edx * 4 */
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stack_aligned:
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test %ecx, %ecx
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jz skip_push_args /* if ecx == 0, skip pushing arguments */
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movl 12(%ebp), %edx /* edx = argv */
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leal -4(%edx,%ecx,4), %edx /* edx = edx + ecx * 4 - 4 */
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subl %esp, %edx /* edx = edx - esp */
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1:
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push 0(%esp,%edx)
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loop 1b /* loop ecx counts */
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skip_push_args:
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movl 8(%ebp), %edx /* edx = func_ptr */
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call *%edx
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leave
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ret
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