quickjs wasi wazero

quickjs-wasi.patch

From 58e4fc1373b6ee5d3810b7e4668762de87731b2f Mon Sep 17 00:00:00 2001
From: Robbert van Ginkel <rvanginkel@buf.build>
Date: Wed, 4 Jan 2023 11:05:15 -0500
Subject: [PATCH] Add wazero based build script

To build the quickjs interpreter, some js files need to be transformed into
quickjs bytecode using qjsc.
---
 build.sh       | 36 ++++++++++++++++++++++++++++++++++++
 qjs.c          |  4 ++--
 qjsc.c         |  2 +-
 quickjs-libc.c | 50 ++++++++++++++++++++++++++++++++++++++++++++------
 quickjs.c      | 12 ++++++------
 quickjs.h      |  2 +-
 6 files changed, 90 insertions(+), 16 deletions(-)
 create mode 100644 build.sh

diff --git a/build.sh b/build.sh
new file mode 100644
index 0000000..463716a
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+
+set -euxo pipefail
+
+WASI_SDK_PATH="${WASI_SDK_PATH:-/opt/wasi-sdk}"
+
+SHARED_FILES=(libunicode cutils libbf libregexp quickjs quickjs-libc)
+
+"$WASI_SDK_PATH/bin/clang" \
+	"--sysroot=$WASI_SDK_PATH/share/wasi-sysroot" \
+	-c "${SHARED_FILES[@]/%/.c}" qjsc.c \
+	-DCONFIG_VERSION='"wasi"' \
+	-DCONFIG_BIGNUM=y \
+	-D_WASI_EMULATED_SIGNAL \
+	-D_WASI_EMULATED_GETPID \
+	-O3
+
+"$WASI_SDK_PATH/bin/clang" \
+	"--sysroot=$WASI_SDK_PATH/share/wasi-sysroot" \
+	-lwasi-emulated-signal  -lwasi-emulated-getpid \
+	-O3 \
+	"${SHARED_FILES[@]/%/.o}" qjsc.o -o qjsc.wasm
+
+wazero run -mount ".:/" qjsc.wasm -- -c -o /repl.c -m /repl.js
+wazero run -mount ".:/" qjsc.wasm -- -fbignum -c -o /qjscalc.c /qjscalc.js
+
+"$WASI_SDK_PATH/bin/clang" \
+	"--sysroot=$WASI_SDK_PATH/share/wasi-sysroot" \
+	"${SHARED_FILES[@]/%/.o}" \
+	repl.c qjs.c qjscalc.c \
+	-I . \
+	-DCONFIG_VERSION='"wasi"' \
+	-DCONFIG_BIGNUM=y \
+	-D_WASI_EMULATED_PROCESS_CLOCKS -lwasi-emulated-process-clocks \
+	-D_WASI_EMULATED_SIGNAL  -lwasi-emulated-signal \
+	-O3 -g -o qjs.wasm
diff --git a/qjs.c b/qjs.c
index d56b843..1039b86 100644
--- a/qjs.c
+++ b/qjs.c
@@ -146,7 +146,7 @@ static inline size_t js_trace_malloc_usable_size(void *ptr)
     return malloc_size(ptr);
 #elif defined(_WIN32)
     return _msize(ptr);
-#elif defined(EMSCRIPTEN)
+#elif defined(EMSCRIPTEN) || defined(__wasi__)
     return 0;
 #elif defined(__linux__)
     return malloc_usable_size(ptr);
@@ -268,7 +268,7 @@ static const JSMallocFunctions trace_mf = {
     malloc_size,
 #elif defined(_WIN32)
     (size_t (*)(const void *))_msize,
-#elif defined(EMSCRIPTEN)
+#elif defined(EMSCRIPTEN) || defined(__wasi__)
     NULL,
 #elif defined(__linux__)
     (size_t (*)(const void *))malloc_usable_size,
diff --git a/qjsc.c b/qjsc.c
index b9f1e4c..c1a9eaf 100644
--- a/qjsc.c
+++ b/qjsc.c
@@ -29,7 +29,7 @@
 #include <assert.h>
 #include <unistd.h>
 #include <errno.h>
-#if !defined(_WIN32)
+#if !defined(_WIN32) && !defined(__wasi__)
 #include <sys/wait.h>
 #endif
 
diff --git a/quickjs-libc.c b/quickjs-libc.c
index e180dd0..43b8c6f 100644
--- a/quickjs-libc.c
+++ b/quickjs-libc.c
@@ -42,10 +42,12 @@
 #include <conio.h>
 #include <utime.h>
 #else
+#if !defined(__wasi__)
 #include <dlfcn.h>
 #include <termios.h>
-#include <sys/ioctl.h>
 #include <sys/wait.h>
+#endif
+#include <sys/ioctl.h>
 
 #if defined(__APPLE__)
 typedef sig_t sighandler_t;
@@ -57,7 +59,7 @@ typedef sig_t sighandler_t;
 
 #endif
 
-#if !defined(_WIN32)
+#if !defined(_WIN32) && !defined(__wasi__)
 /* enable the os.Worker API. IT relies on POSIX threads */
 #define USE_WORKER
 #endif
@@ -453,7 +455,7 @@ typedef JSModuleDef *(JSInitModuleFunc)(JSContext *ctx,
                                         const char *module_name);
 
 
-#if defined(_WIN32)
+#if defined(_WIN32) || defined(__wasi__)
 static JSModuleDef *js_module_loader_so(JSContext *ctx,
                                         const char *module_name)
 {
@@ -530,7 +532,7 @@ int js_module_set_import_meta(JSContext *ctx, JSValueConst func_val,
         return -1;
     if (!strchr(module_name, ':')) {
         strcpy(buf, "file://");
-#if !defined(_WIN32)
+#if !defined(_WIN32) && !defined(__wasi__)
         /* realpath() cannot be used with modules compiled with qjsc
            because the corresponding module source code is not
            necessarily present */
@@ -680,6 +682,7 @@ static JSValue js_std_unsetenv(JSContext *ctx, JSValueConst this_val,
 static JSValue js_std_getenviron(JSContext *ctx, JSValueConst this_val,
                                  int argc, JSValueConst *argv)
 {
+#if !defined(__wasi__)
     char **envp;
     const char *name, *p, *value;
     JSValue obj;
@@ -712,6 +715,12 @@ static JSValue js_std_getenviron(JSContext *ctx, JSValueConst this_val,
  fail:
     JS_FreeValue(ctx, obj);
     return JS_EXCEPTION;
+#else
+    JSValue obj;
+    obj = JS_NewObject(ctx);
+    JS_FreeValue(ctx,obj);
+    return obj;
+#endif
 }
 
 static JSValue js_std_gc(JSContext *ctx, JSValueConst this_val,
@@ -797,9 +806,11 @@ static void js_std_file_finalizer(JSRuntime *rt, JSValue val)
     JSSTDFile *s = JS_GetOpaque(val, js_std_file_class_id);
     if (s) {
         if (s->f && s->close_in_finalizer) {
+#if !defined(__wasi__)
             if (s->is_popen)
                 pclose(s->f);
             else
+#endif
                 fclose(s->f);
         }
         js_free_rt(rt, s);
@@ -901,6 +912,7 @@ static JSValue js_std_open(JSContext *ctx, JSValueConst this_val,
     return JS_EXCEPTION;
 }
 
+#if !defined(__wasi__)
 static JSValue js_std_popen(JSContext *ctx, JSValueConst this_val,
                             int argc, JSValueConst *argv)
 {
@@ -936,6 +948,7 @@ static JSValue js_std_popen(JSContext *ctx, JSValueConst this_val,
     JS_FreeCString(ctx, mode);
     return JS_EXCEPTION;
 }
+#endif
 
 static JSValue js_std_fdopen(JSContext *ctx, JSValueConst this_val,
                              int argc, JSValueConst *argv)
@@ -970,6 +983,7 @@ static JSValue js_std_fdopen(JSContext *ctx, JSValueConst this_val,
     return JS_EXCEPTION;
 }
 
+#if !defined(__wasi__)
 static JSValue js_std_tmpfile(JSContext *ctx, JSValueConst this_val,
                               int argc, JSValueConst *argv)
 {
@@ -981,6 +995,7 @@ static JSValue js_std_tmpfile(JSContext *ctx, JSValueConst this_val,
         return JS_NULL;
     return js_new_std_file(ctx, f, TRUE, FALSE);
 }
+#endif
 
 static JSValue js_std_sprintf(JSContext *ctx, JSValueConst this_val,
                           int argc, JSValueConst *argv)
@@ -1041,8 +1056,10 @@ static JSValue js_std_file_close(JSContext *ctx, JSValueConst this_val,
         return JS_EXCEPTION;
     if (!s->f)
         return JS_ThrowTypeError(ctx, "invalid file handle");
+#if !defined(__wasi__)
     if (s->is_popen)
         err = js_get_errno(pclose(s->f));
+#endif
     else
         err = js_get_errno(fclose(s->f));
     s->f = NULL;
@@ -1273,6 +1290,7 @@ static JSValue js_std_file_putByte(JSContext *ctx, JSValueConst this_val,
 }
 
 /* urlGet */
+#if !defined(__wasi__)
 
 #define URL_GET_PROGRAM "curl -s -i"
 #define URL_GET_BUF_SIZE 4096
@@ -1457,6 +1475,7 @@ static JSValue js_std_urlGet(JSContext *ctx, JSValueConst this_val,
     JS_FreeValue(ctx, response);
     return JS_EXCEPTION;
 }
+#endif
 
 static JSClassDef js_std_file_class = {
     "FILE",
@@ -1489,16 +1508,22 @@ static const JSCFunctionListEntry js_std_funcs[] = {
     JS_CFUNC_DEF("setenv", 1, js_std_setenv ),
     JS_CFUNC_DEF("unsetenv", 1, js_std_unsetenv ),
     JS_CFUNC_DEF("getenviron", 1, js_std_getenviron ),
+#if !defined(__wasi__)
     JS_CFUNC_DEF("urlGet", 1, js_std_urlGet ),
+#endif
     JS_CFUNC_DEF("loadFile", 1, js_std_loadFile ),
     JS_CFUNC_DEF("strerror", 1, js_std_strerror ),
     JS_CFUNC_DEF("parseExtJSON", 1, js_std_parseExtJSON ),
     
     /* FILE I/O */
     JS_CFUNC_DEF("open", 2, js_std_open ),
+#if !defined(__wasi__)
     JS_CFUNC_DEF("popen", 2, js_std_popen ),
+#endif
     JS_CFUNC_DEF("fdopen", 2, js_std_fdopen ),
+#if !defined(__wasi__)
     JS_CFUNC_DEF("tmpfile", 0, js_std_tmpfile ),
+#endif
     JS_CFUNC_MAGIC_DEF("puts", 1, js_std_file_puts, 0 ),
     JS_CFUNC_DEF("printf", 1, js_std_printf ),
     JS_CFUNC_DEF("sprintf", 1, js_std_sprintf ),
@@ -1665,7 +1690,7 @@ static JSValue js_os_isatty(JSContext *ctx, JSValueConst this_val,
         return JS_EXCEPTION;
     return JS_NewBool(ctx, (isatty(fd) != 0));
 }
-
+#if !defined(__wasi__)
 #if defined(_WIN32)
 static JSValue js_os_ttyGetWinSize(JSContext *ctx, JSValueConst this_val,
                                    int argc, JSValueConst *argv)
@@ -1770,6 +1795,7 @@ static JSValue js_os_ttySetRaw(JSContext *ctx, JSValueConst this_val,
 }
 
 #endif /* !_WIN32 */
+#endif /* !__wasi__ */
 
 static JSValue js_os_remove(JSContext *ctx, JSValueConst this_val,
                              int argc, JSValueConst *argv)
@@ -1919,6 +1945,7 @@ typedef void (*sighandler_t)(int sig_num);
 static JSValue js_os_signal(JSContext *ctx, JSValueConst this_val,
                             int argc, JSValueConst *argv)
 {
+#if !defined(__wasi__)
     JSRuntime *rt = JS_GetRuntime(ctx);
     JSThreadState *ts = JS_GetRuntimeOpaque(rt);
     JSOSSignalHandler *sh;
@@ -1960,6 +1987,7 @@ static JSValue js_os_signal(JSContext *ctx, JSValueConst this_val,
         sh->func = JS_DupValue(ctx, func);
         signal(sig_num, os_signal_handler);
     }
+#endif
     return JS_UNDEFINED;
 }
 
@@ -2650,6 +2678,7 @@ static char *realpath(const char *path, char *buf)
 }
 #endif
 
+#if !defined(__wasi__)
 /* return [path, errorcode] */
 static JSValue js_os_realpath(JSContext *ctx, JSValueConst this_val,
                               int argc, JSValueConst *argv)
@@ -2671,6 +2700,7 @@ static JSValue js_os_realpath(JSContext *ctx, JSValueConst this_val,
     }
     return make_string_error(ctx, buf, err);
 }
+#endif
 
 #if !defined(_WIN32)
 static JSValue js_os_symlink(JSContext *ctx, JSValueConst this_val,
@@ -2717,6 +2747,7 @@ static JSValue js_os_readlink(JSContext *ctx, JSValueConst this_val,
     return make_string_error(ctx, buf, err);
 }
 
+#if !defined(__wasi__)
 static char **build_envp(JSContext *ctx, JSValueConst obj)
 {
     uint32_t len, i;
@@ -3119,6 +3150,7 @@ static JSValue js_os_dup2(JSContext *ctx, JSValueConst this_val,
 }
 
 #endif /* !_WIN32 */
+#endif /* !__wasi__ */
 
 #ifdef USE_WORKER
 
@@ -3569,7 +3601,7 @@ void js_std_set_worker_new_context_func(JSContext *(*func)(JSRuntime *rt))
 #define OS_PLATFORM "win32"
 #elif defined(__APPLE__)
 #define OS_PLATFORM "darwin"
-#elif defined(EMSCRIPTEN)
+#elif defined(EMSCRIPTEN) || defined(__wasi__)
 #define OS_PLATFORM "js"
 #else
 #define OS_PLATFORM "linux"
@@ -3595,8 +3627,10 @@ static const JSCFunctionListEntry js_os_funcs[] = {
     JS_CFUNC_MAGIC_DEF("read", 4, js_os_read_write, 0 ),
     JS_CFUNC_MAGIC_DEF("write", 4, js_os_read_write, 1 ),
     JS_CFUNC_DEF("isatty", 1, js_os_isatty ),
+#if !defined(__wasi__)
     JS_CFUNC_DEF("ttyGetWinSize", 1, js_os_ttyGetWinSize ),
     JS_CFUNC_DEF("ttySetRaw", 1, js_os_ttySetRaw ),
+#endif
     JS_CFUNC_DEF("remove", 1, js_os_remove ),
     JS_CFUNC_DEF("rename", 2, js_os_rename ),
     JS_CFUNC_MAGIC_DEF("setReadHandler", 2, js_os_setReadHandler, 0 ),
@@ -3644,11 +3678,14 @@ static const JSCFunctionListEntry js_os_funcs[] = {
     JS_CFUNC_MAGIC_DEF("stat", 1, js_os_stat, 0 ),
     JS_CFUNC_DEF("utimes", 3, js_os_utimes ),
     JS_CFUNC_DEF("sleep", 1, js_os_sleep ),
+#if !defined(__wasi__)
     JS_CFUNC_DEF("realpath", 1, js_os_realpath ),
+#endif
 #if !defined(_WIN32)
     JS_CFUNC_MAGIC_DEF("lstat", 1, js_os_stat, 1 ),
     JS_CFUNC_DEF("symlink", 2, js_os_symlink ),
     JS_CFUNC_DEF("readlink", 1, js_os_readlink ),
+#if !defined(__wasi__)
     JS_CFUNC_DEF("exec", 1, js_os_exec ),
     JS_CFUNC_DEF("waitpid", 2, js_os_waitpid ),
     OS_FLAG(WNOHANG),
@@ -3657,6 +3694,7 @@ static const JSCFunctionListEntry js_os_funcs[] = {
     JS_CFUNC_DEF("dup", 1, js_os_dup ),
     JS_CFUNC_DEF("dup2", 2, js_os_dup2 ),
 #endif
+#endif
 };
 
 static int js_os_init(JSContext *ctx, JSModuleDef *m)
diff --git a/quickjs.c b/quickjs.c
index 48aeffc..1cb736a 100644
--- a/quickjs.c
+++ b/quickjs.c
@@ -50,7 +50,7 @@
 
 #define OPTIMIZE         1
 #define SHORT_OPCODES    1
-#if defined(EMSCRIPTEN)
+#if defined(EMSCRIPTEN) || defined(__wasi__)
 #define DIRECT_DISPATCH  0
 #else
 #define DIRECT_DISPATCH  1
@@ -62,18 +62,18 @@
 #define MALLOC_OVERHEAD  8
 #endif
 
-#if !defined(_WIN32)
+#if !defined(_WIN32) && !defined(__wasi__)
 /* define it if printf uses the RNDN rounding mode instead of RNDNA */
 #define CONFIG_PRINTF_RNDN
 #endif
 
 /* define to include Atomics.* operations which depend on the OS
    threads */
-#if !defined(EMSCRIPTEN)
+#if !defined(EMSCRIPTEN) && !defined(__wasi__)
 #define CONFIG_ATOMICS
 #endif
 
-#if !defined(EMSCRIPTEN)
+#if !defined(EMSCRIPTEN) && !defined(__wasi__)
 /* enable stack limitation */
 #define CONFIG_STACK_CHECK
 #endif
@@ -1680,7 +1680,7 @@ static inline size_t js_def_malloc_usable_size(void *ptr)
     return malloc_size(ptr);
 #elif defined(_WIN32)
     return _msize(ptr);
-#elif defined(EMSCRIPTEN)
+#elif defined(EMSCRIPTEN) || defined(__wasi__)
     return 0;
 #elif defined(__linux__)
     return malloc_usable_size(ptr);
@@ -1754,7 +1754,7 @@ static const JSMallocFunctions def_malloc_funcs = {
     malloc_size,
 #elif defined(_WIN32)
     (size_t (*)(const void *))_msize,
-#elif defined(EMSCRIPTEN)
+#elif defined(EMSCRIPTEN)  || defined(__wasi__)
     NULL,
 #elif defined(__linux__)
     (size_t (*)(const void *))malloc_usable_size,
diff --git a/quickjs.h b/quickjs.h
index d4a5cd3..7e90f00 100644
--- a/quickjs.h
+++ b/quickjs.h
@@ -53,7 +53,7 @@ typedef struct JSClass JSClass;
 typedef uint32_t JSClassID;
 typedef uint32_t JSAtom;
 
-#if INTPTR_MAX >= INT64_MAX
+#if INTPTR_MAX >= INT64_MAX && !defined(__wasi__)
 #define JS_PTR64
 #define JS_PTR64_DEF(a) a
 #else
-- 
2.38.1