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| author | Ayke van Laethem <[email protected]> | 2021-11-04 20:35:13 +0100 |
|---|---|---|
| committer | Ron Evans <[email protected]> | 2021-11-05 08:50:36 +0100 |
| commit | 670fcf59d8c8cb97f8aa1e113a9614564f377bb3 (patch) | |
| tree | 5a0fabb4882abda12ab8a3f186a42a937c8edb4b | |
| parent | cceb6558743ee62f3580ed7586564373978b29f1 (diff) | |
| download | tinygo-670fcf59d8c8cb97f8aa1e113a9614564f377bb3.tar.gz tinygo-670fcf59d8c8cb97f8aa1e113a9614564f377bb3.zip | |
linux: reduce binary size in the common case
This commit changes the runtime.putchar implementation to directly call
the `write` system call. This reduces the binary size by around 2.7kB.
| -rw-r--r-- | src/runtime/runtime_unix.go | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/runtime/runtime_unix.go b/src/runtime/runtime_unix.go index e53ff3573..684063b45 100644 --- a/src/runtime/runtime_unix.go +++ b/src/runtime/runtime_unix.go @@ -7,8 +7,8 @@ import ( "unsafe" ) -//export putchar -func _putchar(c int) int +//export write +func libc_write(fd int32, buf unsafe.Pointer, count uint) int //export usleep func usleep(usec uint) int @@ -145,7 +145,8 @@ func syscall_runtime_envs() []string { } func putchar(c byte) { - _putchar(int(c)) + buf := [1]byte{c} + libc_write(1, unsafe.Pointer(&buf[0]), 1) } func ticksToNanoseconds(ticks timeUnit) int64 { |