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https://github.com/bytecodealliance/wasm-micro-runtime.git
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55 lines
1.2 KiB
C
55 lines
1.2 KiB
C
/*
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* Copyright (C) 2024 Midokura Japan KK. All rights reserved.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*/
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#include <stdio.h>
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#include <stdint.h>
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uint32_t
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host_consume_stack_and_call_indirect(int (*)(int), uint32_t, uint32_t);
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uint32_t host_consume_stack(uint32_t);
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int
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cb(int x)
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{
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return x * x;
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}
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int
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consume_stack_cb(int x) __attribute__((disable_tail_calls))
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{
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/*
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* intentions:
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*
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* - consume native stack by making recursive calls
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*
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* - avoid tail-call optimization (either by the C compiler or
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* aot-compiler)
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*/
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if (x == 0) {
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return 0;
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}
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return consume_stack_cb(x - 1) + 1;
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}
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int
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host_consume_stack_cb(int x)
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{
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return host_consume_stack(x);
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}
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__attribute__((export_name("test"))) uint32_t
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test(uint32_t native_stack, uint32_t recurse_count)
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{
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uint32_t ret;
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ret = host_consume_stack_and_call_indirect(cb, 321, native_stack);
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ret = host_consume_stack_and_call_indirect(consume_stack_cb, recurse_count,
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native_stack);
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#if 0 /* notyet */
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ret = host_consume_stack_and_call_indirect(host_consume_stack_cb, 1000000,
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native_stack);
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#endif
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return 42;
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}
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