Add fputs

Author: lupyuen

docs/tcc-wasm.wasm

@@ -68,6 +68,7 @@ function main() {
   const data_len = new Uint8Array(memory.buffer, ptr, 4);
   const len = data_len[0] | data_len[1] << 8 | data_len[2] << 16 | data_len[3] << 24;
   console.log(`main: len=${len}`);
+  if (len <= 0) { return; }
 
   // Encode the `a.out` data from the rest of the bytes returned
   const data = new Uint8Array(memory.buffer, ptr + 4, len);

docs/tcc.js

@@ -298,12 +298,17 @@ var memory_buffer = std.mem.zeroes([16 * 1024 * 1024]u8);
 ///////////////////////////////////////////////////////////////////////////////
 //  Logging
 
-export fn puts(s: [*:0]const u8) callconv(.C) c_int {
+export fn puts(s: [*:0]const u8) c_int {
     debug("{s}", .{s});
     return 0;
 }
 
-pub export fn fflush(_: c_int) c_int {
+export fn fputs(s: [*:0]const u8, stream: *FILE) c_int {
+    debug("fputs: s={s}, stream={*}", .{ s, stream });
+    return 0;
+}
+
+export fn fflush(_: c_int) c_int {
     return 0;
 }
 
@@ -464,9 +469,6 @@ pub export fn exit(_: c_int) c_int {
 pub export fn fopen(_: c_int) c_int {
     @panic("TODO: fopen");
 }
-pub export fn fputs(_: c_int) c_int {
-    @panic("TODO: fputs");
-}
 pub export fn fread(_: c_int) c_int {
     @panic("TODO: fread");
 }