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/*
* Copyright (C) 2019 Intel Corporation. All rights reserved.
* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
*/
.text
.align 2
.globl invokeNative
.ent invokeNative
.type invokeNative, @function
/**
* On function entry parameters:
* $4 = func_ptr
* $5 = args
* $6 = arg_num
*/
invokeNative:
.frame $fp, 8, $0
.mask 0x00000000, 0
.fmask 0x00000000, 0
/* Fixed part of frame */
subu $sp, 8
/* save registers */
sw $31, 4($sp)
sw $fp, 0($sp)
/* set frame pointer to bottom of fixed frame */
move $fp, $sp
/* allocate enough stack space */
sll $11, $6, 2 /* $11 == arg_num * 4 */
subu $sp, $11
/* make 8-byte aligned */
and $sp, ~7
move $9, $sp
move $25, $4 /* $25 = func_ptr */
push_args:
beq $6, 0, done /* arg_num == 0 ? */
lw $8, 0($5) /* $8 = *args */
sw $8, 0($9) /* store $8 to stack */
addu $5, 4 /* args++ */
addu $9, 4 /* sp++ */
subu $6, 1 /* arg_num-- */
j push_args
done:
lw $4, 0($sp) /* Load $4..$7 from stack */
lw $5, 4($sp)
lw $6, 8($sp)
lw $7, 12($sp)
ldc1 $f12, 0($sp) /* Load $f12, $f13, $f14, $f15 */
ldc1 $f14, 8($sp)
jalr $25 /* call function */
nop
/* restore saved registers */
move $sp, $fp
lw $31, 4($sp)
lw $fp, 0($sp)
/* pop frame */
addu $sp, $sp, 8
j $31
.end invokeNative
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