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65 lines
1.4 KiB
Plaintext
65 lines
1.4 KiB
Plaintext
(import "wasi_snapshot_preview1" "fd_write" (func $fd_write (param $file_descriptor i32) (param $io_vectors i32) (param $io_vecnum i32) (param $num_written_ptr i32) (result i32)))
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(func $print (param $location i32) (param $length i32) (result i32)
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(local $structLoc i32)
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(local $resultLoc i32)
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(local $resultCode i32)
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i32.const 8 ;; 2 x 4bytes per i32
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call $memory_alloc
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local.set $structLoc
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i32.const 4
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call $memory_alloc
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local.set $resultLoc
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;; put location at offset 0
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local.get $structLoc
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local.get $location
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i32.store
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;; put length at offset 4
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local.get $structLoc
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i32.const 4
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i32.add
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local.get $length
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i32.store
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;; call params
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i32.const 1 ;; file file_descriptor
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local.get $structLoc ;; array pointer
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i32.const 1 ;; array length
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local.get $resultLoc ;; result pointer
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call $fd_write
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local.tee $resultCode
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local.get $structLoc ;; free calling struct
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call $memory_free
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local.get $resultLoc ;; get bytes written on stack
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i32.load
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local.get $resultLoc ;; free bytes written location
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call $memory_free
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local.set $resultLoc ;; put in result variable
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;; if code was 0, make sure all bytes were written
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i32.eqz
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if
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local.get $resultLoc ;; should be value, not pointer any more
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local.get $length
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i32.lt_u
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if
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i32.const 1
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return
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end
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i32.const 0
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return
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end
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;; otherwise return code
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local.get $resultCode
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return
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)
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