fill: Wasm text instruction

Thememory.fillmemory instruction sets all bytes in a memory region to a given byte.

The instruction returns no value.It traps (exception) if the indicated memory region is out of bounds.

Syntax

Fill within default memory

wat

;; Fill region at offset/range in default memory with 255i32.const 200 ;; The pointer to the region to updatei32.const 255 ;; The value to set each byte to (must be < 256)i32.const 100 ;; The number of bytes to updatememory.fill ;; Fill default memory;; Fill default memory using an S-function(memory.fill (i32.const 200) (i32.const 255) (i32.const 100))

Fill specified memory (if multi-memory supported)

wat

;; Fill specific memory referenced by its indexi32.const 200 ;; The pointer to the region to updatei32.const 255 ;; The value to set each byte to (must be < 256)i32.const 100 ;; The number of bytes to updatememory.fill (memory 1) ;; Fill memory with index 1;; Fill memory referenced by its namei32.const 200 ;; The pointer to the region to updatei32.const 255 ;; The value to set each byte to (must be < 256)i32.const 100 ;; The number of bytes to updatememory.fill (memory $memoryName) ;; Fill memory with name "$memoryName";; Fill same memory using an S function(memory.fill (memory $memoryName) (i32.const 200) (i32.const 255) (i32.const 100))