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272a41dc80
Also refer to: https://github.com/fluent/fluent-bit/issues/10513 Signed-off-by: Jaco Kroon <jaco@uls.co.za>
78 lines
1.5 KiB
ArmAsm
78 lines
1.5 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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.globl invokeNative
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.ent invokeNative
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.type invokeNative, @function
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/**
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* On function entry parameters:
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* $4 = func_ptr
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* $5 = args
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* $6 = arg_num
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*/
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invokeNative:
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.frame $fp, 8, $0
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.mask 0x00000000, 0
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.fmask 0x00000000, 0
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/* Fixed part of frame */
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subu $sp, 8
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/* save registers */
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sw $31, 4($sp)
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sw $fp, 0($sp)
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/* set frame pointer to bottom of fixed frame */
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move $fp, $sp
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/* allocate enough stack space */
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sll $11, $6, 2 /* $11 == arg_num * 4 */
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subu $sp, $11
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/* make 8-byte aligned */
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and $sp, ~7
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move $9, $sp
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move $25, $4 /* $25 = func_ptr */
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push_args:
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beq $6, 0, done /* arg_num == 0 ? */
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lw $8, 0($5) /* $8 = *args */
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sw $8, 0($9) /* store $8 to stack */
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addu $5, 4 /* args++ */
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addu $9, 4 /* sp++ */
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subu $6, 1 /* arg_num-- */
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j push_args
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done:
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lw $4, 0($sp) /* Load $4..$7 from stack */
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lw $5, 4($sp)
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lw $6, 8($sp)
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lw $7, 12($sp)
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ldc1 $f12, 0($sp) /* Load $f12, $f13, $f14, $f15 */
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ldc1 $f14, 8($sp)
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jalr $25 /* call function */
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nop
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/* restore saved registers */
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move $sp, $fp
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lw $31, 4($sp)
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lw $fp, 0($sp)
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/* pop frame */
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addu $sp, $sp, 8
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j $31
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.end invokeNative
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#if defined(__linux__) && defined(__ELF__)
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.section .note.GNU-stack,"",%progbits
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#endif
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