Add ___syscall12 (chdir())

zhuguoliang · Sep 25, 2018 · 1a823f8 · 1a823f8
1 parent ec28cd6
commit 1a823f8
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Showing 4 changed files with 22 additions and 0 deletions.
diff --git a/src/wasmjit/emscripten_runtime.c b/src/wasmjit/emscripten_runtime.c
@@ -2643,6 +2643,25 @@ uint32_t wasmjit_emscripten____syscall221(uint32_t which, uint32_t varargs,
 	return -SYS_EINVAL;
 }
 
+/* chdir */
+uint32_t wasmjit_emscripten____syscall12(uint32_t which, uint32_t varargs,
+					 struct FuncInst *funcinst)
+{
+	char *base;
+
+	LOAD_ARGS(funcinst, varargs, 1,
+		  uint32_t, pathname);
+
+	(void) which;
+
+	base = wasmjit_emscripten_get_base_address(funcinst);
+
+	if (!_wasmjit_emscripten_check_string(funcinst, args.pathname, PATH_MAX))
+		return -SYS_EFAULT;
+
+	return check_ret(sys_chdir(base + args.pathname));
+}
+
 void wasmjit_emscripten_cleanup(struct ModuleInst *moduleinst) {
 	(void)moduleinst;
 	/* TODO: implement */

diff --git a/src/wasmjit/emscripten_runtime.h b/src/wasmjit/emscripten_runtime.h
@@ -61,6 +61,7 @@ void wasmjit_emscripten____buildEnvironment(uint32_t, struct FuncInst *);
 uint32_t wasmjit_emscripten____syscall10(uint32_t which, uint32_t varargs, struct FuncInst *funcinst);
 uint32_t wasmjit_emscripten____syscall102(uint32_t which, uint32_t varargs, struct FuncInst *funcinst);
 uint32_t wasmjit_emscripten____syscall221(uint32_t which, uint32_t varargs, struct FuncInst *funcinst);
+uint32_t wasmjit_emscripten____syscall12(uint32_t which, uint32_t varargs, struct FuncInst *funcinst);
 void wasmjit_emscripten_start_func(struct FuncInst *funcinst);
 
 struct EmscriptenContext *wasmjit_emscripten_get_context(struct ModuleInst *);

diff --git a/src/wasmjit/emscripten_runtime_def.h b/src/wasmjit/emscripten_runtime_def.h
@@ -95,6 +95,7 @@ DEFINE_EMSCRIPTEN_FUNCTION(___buildEnvironment, VALTYPE_NULL, 1, VALTYPE_I32)
 DEFINE_EMSCRIPTEN_FUNCTION(___syscall10, VALTYPE_I32, 2, VALTYPE_I32, VALTYPE_I32)
 DEFINE_EMSCRIPTEN_FUNCTION(___syscall102, VALTYPE_I32, 2, VALTYPE_I32, VALTYPE_I32)
 DEFINE_EMSCRIPTEN_FUNCTION(___syscall221, VALTYPE_I32, 2, VALTYPE_I32, VALTYPE_I32)
+DEFINE_EMSCRIPTEN_FUNCTION(___syscall12, VALTYPE_I32, 2, VALTYPE_I32, VALTYPE_I32)
 END_FUNCTION_DEFS()
 
 DEFINE_WASM_START_FUNCTION(wasmjit_emscripten_start_func)

diff --git a/src/wasmjit/emscripten_runtime_sys_def.h b/src/wasmjit/emscripten_runtime_sys_def.h
@@ -38,3 +38,4 @@ KWSC5(setsockopt, int, int, int, const void *, socklen_t)
 KWSC5(getsockopt, int, int, int, void *, socklen_t *)
 KWSC3(sendmsg, int, const struct msghdr *, int)
 KWSC3(recvmsg, int, struct msghdr *, int)
+KWSC1(chdir, const char *)