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e1ba69ea51
Having the OS/runtime provide a cryptographic entropy source is the right thing to do, and we need it to initialize the default random number generator.
36 lines
677 B
Odin
36 lines
677 B
Odin
#+build js
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#+private
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package runtime
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foreign import "odin_env"
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_HAS_RAND_BYTES :: true
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_stderr_write :: proc "contextless" (data: []byte) -> (int, _OS_Errno) {
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foreign odin_env {
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write :: proc "contextless" (fd: u32, p: []byte) ---
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}
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write(1, data)
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return len(data), 0
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}
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_rand_bytes :: proc "contextless" (dst: []byte) {
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foreign odin_env {
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@(link_name = "rand_bytes")
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env_rand_bytes :: proc "contextless" (buf: []byte) ---
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}
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MAX_PER_CALL_BYTES :: 65536 // 64kiB
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dst := dst
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for len(dst) > 0 {
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to_read := min(len(dst), MAX_PER_CALL_BYTES)
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env_rand_bytes(dst[:to_read])
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dst = dst[to_read:]
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}
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}
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_exit :: proc "contextless" (code: int) -> ! {
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trap()
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} |