mirror of
https://github.com/fluencelabs/wasm-utils
synced 2025-03-31 02:11:03 +00:00
33 lines
799 B
Rust
33 lines
799 B
Rust
#![feature(link_args)]
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#![no_main]
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// as it is experimental preamble
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#![allow(dead_code)]
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#[link_args = "-s WASM=1 -s NO_EXIT_RUNTIME=1 -s NO_FILESYSTEM=1"]
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extern {}
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static DATA: u32 = 0;
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#[no_mangle]
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pub fn call(_descr: *mut u8) {
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let data_ptr = &DATA as *const u32 as *mut u32;
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unsafe { *data_ptr += 1; }
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}
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/* This produces the following code (after injecting gas counter & optimizing)
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(module
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(type (;0;) (func (param i32)))
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(type (;1;) (func (param i32)))
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(import "env" "memory" (memory (;0;) 256 256))
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(import "env" "table" (table (;0;) 0 0 anyfunc))
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(import "env" "gas" (func (;0;) (type 1)))
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(func (;1;) (type 0) (param i32)
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i32.const 4
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call 0
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i32.const 1268
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i32.const 1
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i32.store)
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(export "_call" (func 1))
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(data (i32.const 1212) " \05"))
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*/ |