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Enhance wasm loader and update build app document (#147)

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This commit is contained in:
wenyongh 2019-11-27 10:52:12 +08:00 committed by GitHub
parent ab157473c3
commit 1c81ad6da5
7 changed files with 276 additions and 129 deletions
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37
core/iwasm/lib/native/libc/libc_builtin_wrapper.c
View File

@ -80,15 +80,17 @@ _printf_hex_uint(out_func_t out, void *ctx,
enum pad_type padding,
int min_width)
{
int size = sizeof(num) * (is_u64 ? 2 : 1);
int shift = sizeof(num) * 8;
int found_largest_digit = 0;
int remaining = 8; /* 8 digits max */
int remaining = 16; /* 16 digits max */
int digits = 0;
char nibble;
for (; size; size--) {
char nibble = (num >> ((size - 1) << 2) & 0xf);
while (shift >= 4) {
shift -= 4;
nibble = (num >> shift) & 0xf;
if (nibble || found_largest_digit || size == 1) {
if (nibble || found_largest_digit || shift == 0) {
found_largest_digit = 1;
nibble = (char)(nibble + (nibble > 9 ? 87 : 48));
out((int) nibble, ctx);
@ -1153,17 +1155,13 @@ __cxa_throw_wrapper(wasm_module_inst_t module_inst,
wasm_runtime_set_exception(module_inst, buf);
}
/*#define ENABLE_SPEC_TEST 1*/
#ifndef ENABLE_SPEC_TEST
#define ENABLE_SPEC_TEST 0
#endif
#ifdef ENABLE_SPEC_TEST
#if ENABLE_SPEC_TEST != 0
static void
print_i32_wrapper(wasm_module_inst_t module_inst, int i32)
{
bh_printf("%d\n", i32);
}
static void
print_wrapper(wasm_module_inst_t module_inst, int i32)
print_i32_wrapper(wasm_module_inst_t module_inst, int32 i32)
{
bh_printf("%d\n", i32);
}
@ -1180,9 +1178,8 @@ typedef struct WASMNativeFuncDef {
} WASMNativeFuncDef;
static WASMNativeFuncDef native_func_defs[] = {
#ifdef ENABLE_SPEC_TEST
#if ENABLE_SPEC_TEST != 0
REG_NATIVE_FUNC(spectest, print_i32),
REG_NATIVE_FUNC(spectest, print),
#endif
REG_NATIVE_FUNC(env, _printf),
REG_NATIVE_FUNC(env, _sprintf),
@ -1284,8 +1281,12 @@ typedef struct WASMNativeGlobalDef {
} WASMNativeGlobalDef;
static WASMNativeGlobalDef native_global_defs[] = {
#ifdef ENABLE_SPEC_TEST
{ "spectest", "global_i32", .global_data.u32 = 0 },
#if ENABLE_SPEC_TEST != 0
{ "spectest", "global_i32", .global_data.i32 = 666 },
{ "spectest", "global_f32", .global_data.f32 = 0 },
{ "spectest", "global_f64", .global_data.f64 = 0 },
{ "test", "global-i32", .global_data.i32 = 0 },
{ "test", "global-f32", .global_data.f32 = 0 },
#endif
{ "env", "STACKTOP", .global_data.u32 = 0 },
{ "env", "STACK_MAX", .global_data.u32 = 0 },

4
core/iwasm/lib/native/libc/wasmtime-wasi-c/sandboxed-system-primitives/src/posix.c
View File

@ -846,7 +846,7 @@ __wasi_errno_t wasmtime_ssp_fd_pread(
struct fd_object *fo;
__wasi_errno_t error = fd_object_get(curfds,
&fo, fd, __WASI_RIGHT_FD_READ | __WASI_RIGHT_FD_SEEK, 0);
&fo, fd, __WASI_RIGHT_FD_READ, 0);
if (error != 0)
return error;
@ -918,7 +918,7 @@ __wasi_errno_t wasmtime_ssp_fd_pwrite(
struct fd_object *fo;
__wasi_errno_t error = fd_object_get(curfds,
&fo, fd, __WASI_RIGHT_FD_WRITE | __WASI_RIGHT_FD_SEEK, 0);
&fo, fd, __WASI_RIGHT_FD_WRITE, 0);
if (error != 0)
return error;

5
core/iwasm/runtime/vmcore-wasm/wasm.h
View File

@ -68,9 +68,6 @@ extern "C" {
#define BLOCK_TYPE_IF 2
#define BLOCK_TYPE_FUNCTION 3
#define CALL_TYPE_WRAPPER 0
#define CALL_TYPE_C_INTRINSIC 1
typedef union WASMValue {
int32 i32;
uint32 u32;
@ -140,8 +137,6 @@ typedef struct WASMFunctionImport {
char *field_name;
/* function type */
WASMType *func_type;
/* c intrinsic function or wrapper function */
uint32 call_type;
/* function pointer after linked */
void *func_ptr_linked;
} WASMFunctionImport;

19
core/iwasm/runtime/vmcore-wasm/wasm_interp.c
View File

@ -612,6 +612,16 @@ wasm_interp_call_func_native(WASMThread *self,
wasm_thread_set_cur_frame (self, frame);
if (!cur_func->u.func_import->func_ptr_linked) {
char buf[128];
snprintf(buf,
sizeof(buf), "fail to call unlinked import function (%s, %s)",
cur_func->u.func_import->module_name,
cur_func->u.func_import->field_name);
wasm_runtime_set_exception(self->module_inst, buf);
return;
}
ret = wasm_runtime_invoke_native(cur_func->u.func_import->func_ptr_linked,
cur_func->u.func_import->func_type,
self->module_inst,
@ -840,7 +850,7 @@ wasm_interp_call_func_bytecode(WASMThread *self,
HANDLE_OP (WASM_OP_CALL_INDIRECT):
{
WASMType *cur_type, *cur_func_type;
/* TODO: test */
read_leb_uint32(frame_ip, frame_ip_end, tidx);
if (tidx >= module->module->type_count) {
wasm_runtime_set_exception(module, "type index is overflow");
@ -858,8 +868,11 @@ wasm_interp_call_func_bytecode(WASMThread *self,
}
fidx = ((uint32*)table->base_addr)[val];
/* Skip function index check, it has been checked
in wasm module instantiate */
if (fidx == (uint32)-1) {
wasm_runtime_set_exception(module, "uninitialized element");
goto got_exception;
}
cur_func = module->functions + fidx;
if (cur_func->is_import_func)

328
core/iwasm/runtime/vmcore-wasm/wasm_loader.c
View File

@ -26,11 +26,21 @@ set_error_buf(char *error_buf, uint32 error_buf_size, const char *string)
snprintf(error_buf, error_buf_size, "%s", string);
}
#define CHECK_BUF(buf, buf_end, length) do { \
if (buf + length > buf_end) { \
set_error_buf(error_buf, error_buf_size, "unexpected end"); \
return false; \
} \
#define CHECK_BUF(buf, buf_end, length) do { \
if (buf + length > buf_end) { \
set_error_buf(error_buf, error_buf_size, \
"WASM module load failed: " \
"unexpected end of section or function"); \
return false; \
} \
} while (0)
#define CHECK_BUF1(buf, buf_end, length) do { \
if (buf + length > buf_end) { \
set_error_buf(error_buf, error_buf_size, \
"WASM module load failed: unexpected end");\
return false; \
} \
} while (0)
static bool
@ -57,6 +67,7 @@ read_leb(const uint8 *buf, const uint8 *buf_end,
}
if (bcnt > (maxbits + 7 - 1) / 7) {
set_error_buf(error_buf, error_buf_size,
"WASM module load failed: "
"integer representation too long");
return false;
}
@ -122,14 +133,56 @@ read_leb(const uint8 *buf, const uint8 *buf_end,
res = (uint8)res64; \
} while (0)
static bool
check_utf8_str(const uint8* str, uint32 len)
{
const uint8 *p = str, *p_end = str + len, *p_end1;
uint8 chr, n_bytes;
while (p < p_end) {
chr = *p++;
if (chr >= 0x80) {
/* Calculate the byte count: the first byte must be
110XXXXX, 1110XXXX, 11110XXX, 111110XX, or 1111110X,
the count of leading '1' denotes the total byte count */
n_bytes = 0;
while ((chr & 0x80) != 0) {
chr <<= 1;
n_bytes++;
}
/* Check byte count */
if (n_bytes < 2 || n_bytes > 6
|| p + n_bytes - 1 > p_end)
return false;
/* Check the following bytes, which must be 10XXXXXX */
p_end1 = p + n_bytes - 1;
while (p < p_end1) {
if (!(*p & 0x80) || (*p | 0x40))
return false;
p++;
}
}
}
return true;
}
static char*
const_str_set_insert(const uint8 *str, uint32 len, WASMModule *module,
char* error_buf, uint32 error_buf_size)
{
HashMap *set = module->const_str_set;
char *c_str = wasm_malloc(len + 1), *value;
char *c_str, *value;
if (!c_str) {
if (!check_utf8_str(str, len)) {
set_error_buf(error_buf, error_buf_size,
"WASM module load failed: "
"invalid UTF-8 encoding");
return NULL;
}
if (!(c_str = wasm_malloc(len + 1))) {
set_error_buf(error_buf, error_buf_size,
"WASM module load failed: "
"allocate memory failed.");
@ -196,13 +249,16 @@ load_init_expr(const uint8 **p_buf, const uint8 *buf_end,
read_leb_uint32(p, p_end, init_expr->u.global_index);
break;
default:
set_error_buf(error_buf, error_buf_size, "type mismatch");
set_error_buf(error_buf, error_buf_size,
"WASM module load failed: type mismatch");
return false;
}
CHECK_BUF(p, p_end, 1);
end_byte = read_uint8(p);
if (end_byte != 0x0b) {
set_error_buf(error_buf, error_buf_size, "unexpected end");
set_error_buf(error_buf, error_buf_size,
"WASM module load failed: "
"unexpected end of section or function");
return false;
}
*p_buf = p;
@ -284,7 +340,7 @@ load_type_section(const uint8 *buf, const uint8 *buf_end, WASMModule *module,
if (p != p_end) {
set_error_buf(error_buf, error_buf_size,
"Load type section failed: invalid section size.");
"Load type section failed: section size mismatch");
return false;
}
@ -455,7 +511,8 @@ load_import_section(const uint8 *buf, const uint8 *buf_end, WASMModule *module,
read_leb_uint32(p, p_end, u32);
module->import_table_count++;
if (module->import_table_count > 1) {
set_error_buf(error_buf, error_buf_size, "multiple tables");
set_error_buf(error_buf, error_buf_size,
"Load import section failed: multiple tables");
return false;
}
break;
@ -467,14 +524,15 @@ load_import_section(const uint8 *buf, const uint8 *buf_end, WASMModule *module,
read_leb_uint32(p, p_end, u32);
module->import_memory_count++;
if (module->import_memory_count > 1) {
set_error_buf(error_buf, error_buf_size, "multiple memories");
set_error_buf(error_buf, error_buf_size,
"Load import section failed: multiple memories");
return false;
}
break;
case IMPORT_KIND_GLOBAL: /* import global */
read_leb_uint8(p, p_end, u8);
read_leb_uint8(p, p_end, u8);
CHECK_BUF(p, p_end, 2);
p += 2;
module->import_global_count++;
break;
@ -529,27 +587,18 @@ load_import_section(const uint8 *buf, const uint8 *buf_end, WASMModule *module,
if (type_index >= module->type_count) {
set_error_buf(error_buf, error_buf_size,
"Load import section failed: "
"invalid function type index.");
"function type index out of range.");
return false;
}
import->u.function.func_type = module->types[type_index];
if (!(import->u.function.func_ptr_linked = wasm_native_func_lookup
(module_name, field_name))) {
if (!(import->u.function.func_ptr_linked =
resolve_sym(module_name, field_name))) {
if (error_buf != NULL)
snprintf(error_buf, error_buf_size,
"Load import section failed: "
"resolve import function (%s, %s) failed.",
module_name, field_name);
return false;
}
import->u.function.call_type = CALL_TYPE_C_INTRINSIC;
break;
if (!(import->u.function.func_ptr_linked =
wasm_native_func_lookup(module_name, field_name))
&& !(import->u.function.func_ptr_linked =
resolve_sym(module_name, field_name))) {
LOG_WARNING("warning: fail to link import function (%s, %s)\n",
module_name, field_name);
}
import->u.function.call_type = CALL_TYPE_WRAPPER;
break;
case IMPORT_KIND_TABLE: /* import table */
@ -571,7 +620,8 @@ load_import_section(const uint8 *buf, const uint8 *buf_end, WASMModule *module,
error_buf, error_buf_size))
return false;
if (module->import_table_count > 1) {
set_error_buf(error_buf, error_buf_size, "multiple memories");
set_error_buf(error_buf, error_buf_size,
"Load import section failed: multiple memories");
return false;
}
break;
@ -579,8 +629,15 @@ load_import_section(const uint8 *buf, const uint8 *buf_end, WASMModule *module,
case IMPORT_KIND_GLOBAL: /* import global */
wasm_assert(import_globals);
import = import_globals++;
read_leb_uint8(p, p_end, import->u.global.type);
read_leb_uint8(p, p_end, mutable);
CHECK_BUF(p, p_end, 2);
import->u.global.type = read_uint8(p);
mutable = read_uint8(p);
if (mutable >= 2) {
set_error_buf(error_buf, error_buf_size,
"Load import section failed: "
"invalid mutability");
return false;
}
import->u.global.is_mutable = mutable & 1 ? true : false;
if (!(wasm_native_global_lookup(module_name, field_name,
&import->u.global))) {
@ -617,8 +674,7 @@ load_import_section(const uint8 *buf, const uint8 *buf_end, WASMModule *module,
if (p != p_end) {
set_error_buf(error_buf, error_buf_size,
"Load import section failed: "
"invalid section size.");
"Load import section failed: section size mismatch");
return false;
}
@ -650,6 +706,7 @@ load_function_section(const uint8 *buf, const uint8 *buf_end,
if (func_count != code_count) {
set_error_buf(error_buf, error_buf_size,
"Load function section failed: "
"function and code section have inconsistent lengths");
return false;
}
@ -672,7 +729,7 @@ load_function_section(const uint8 *buf, const uint8 *buf_end,
if (type_index >= module->type_count) {
set_error_buf(error_buf, error_buf_size,
"Load function section failed: "
"invalid function type index.");
"function type index out of range.");
return false;
}
@ -696,6 +753,7 @@ load_function_section(const uint8 *buf, const uint8 *buf_end,
read_leb_uint32(p_code, buf_code_end, sub_local_count);
if (sub_local_count > UINT32_MAX - local_count) {
set_error_buf(error_buf, error_buf_size,
"Load function section failed: "
"too many locals");
return false;
}
@ -753,8 +811,7 @@ load_function_section(const uint8 *buf, const uint8 *buf_end,
if (p != p_end) {
set_error_buf(error_buf, error_buf_size,
"Load function section failed: "
"invalid section size.");
"Load function section failed: section size mismatch");
return false;
}
@ -776,7 +833,8 @@ load_table_section(const uint8 *buf, const uint8 *buf_end, WASMModule *module,
if (table_count) {
if (table_count > 1) {
set_error_buf(error_buf, error_buf_size, "multiple memories");
set_error_buf(error_buf, error_buf_size,
"Load table section failed: multiple memories");
return false;
}
module->table_count = table_count;
@ -784,8 +842,7 @@ load_table_section(const uint8 *buf, const uint8 *buf_end, WASMModule *module,
if (total_size >= UINT32_MAX
|| !(module->tables = wasm_malloc((uint32)total_size))) {
set_error_buf(error_buf, error_buf_size,
"Load table section failed: "
"allocate memory failed.");
"Load table section failed: allocate memory failed.");
return false;
}
@ -800,7 +857,7 @@ load_table_section(const uint8 *buf, const uint8 *buf_end, WASMModule *module,
if (p != p_end) {
set_error_buf(error_buf, error_buf_size,
"Load table section failed: invalid section size.");
"Load table section failed: section size mismatch");
return false;
}
@ -822,7 +879,8 @@ load_memory_section(const uint8 *buf, const uint8 *buf_end, WASMModule *module,
if (memory_count) {
if (memory_count > 1) {
set_error_buf(error_buf, error_buf_size, "multiple memories");
set_error_buf(error_buf, error_buf_size,
"Load memory section failed: multiple memories");
return false;
}
module->memory_count = memory_count;
@ -830,8 +888,7 @@ load_memory_section(const uint8 *buf, const uint8 *buf_end, WASMModule *module,
if (total_size >= UINT32_MAX
|| !(module->memories = wasm_malloc((uint32)total_size))) {
set_error_buf(error_buf, error_buf_size,
"Load memory section failed: "
"allocate memory failed.");
"Load memory section failed: allocate memory failed.");
return false;
}
@ -846,7 +903,7 @@ load_memory_section(const uint8 *buf, const uint8 *buf_end, WASMModule *module,
if (p != p_end) {
set_error_buf(error_buf, error_buf_size,
"Load memory section failed: invalid section size.");
"Load memory section failed: section size mismatch");
return false;
}
@ -862,6 +919,7 @@ load_global_section(const uint8 *buf, const uint8 *buf_end, WASMModule *module,
uint32 global_count, i;
uint64 total_size;
WASMGlobal *global;
uint8 mutable;
read_leb_uint32(p, p_end, global_count);
@ -881,10 +939,16 @@ load_global_section(const uint8 *buf, const uint8 *buf_end, WASMModule *module,
global = module->globals;
for(i = 0; i < global_count; i++, global++) {
CHECK_BUF(p, p_end, 1);
CHECK_BUF(p, p_end, 2);
global->type = read_uint8(p);
CHECK_BUF(p, p_end, 1);
global->is_mutable = read_bool(p);
mutable = read_uint8(p);
if (mutable >= 2) {
set_error_buf(error_buf, error_buf_size,
"Load import section failed: "
"invalid mutability");
return false;
}
global->is_mutable = mutable ? true : false;
/* initialize expression */
if (!load_init_expr(&p, p_end, &(global->init_expr), error_buf, error_buf_size))
@ -894,7 +958,7 @@ load_global_section(const uint8 *buf, const uint8 *buf_end, WASMModule *module,
if (p != p_end) {
set_error_buf(error_buf, error_buf_size,
"Load global section failed: invalid section size.");
"Load global section failed: section size mismatch");
return false;
}
@ -947,7 +1011,7 @@ load_export_section(const uint8 *buf, const uint8 *buf_end, WASMModule *module,
if (index >= module->function_count + module->import_function_count) {
set_error_buf(error_buf, error_buf_size,
"Load export section failed: "
"function index is out of range.");
"function index out of range.");
return false;
}
break;
@ -956,7 +1020,7 @@ load_export_section(const uint8 *buf, const uint8 *buf_end, WASMModule *module,
if (index >= module->table_count + module->import_table_count) {
set_error_buf(error_buf, error_buf_size,
"Load export section failed: "
"table index is out of range.");
"table index out of range.");
return false;
}
break;
@ -965,7 +1029,7 @@ load_export_section(const uint8 *buf, const uint8 *buf_end, WASMModule *module,
if (index >= module->memory_count + module->import_memory_count) {
set_error_buf(error_buf, error_buf_size,
"Load export section failed: "
"memory index is out of range.");
"memory index out of range.");
return false;
}
break;
@ -974,14 +1038,14 @@ load_export_section(const uint8 *buf, const uint8 *buf_end, WASMModule *module,
if (index >= module->global_count + module->import_global_count) {
set_error_buf(error_buf, error_buf_size,
"Load export section failed: "
"global index is out of range.");
"global index out of range.");
return false;
}
break;
default:
set_error_buf(error_buf, error_buf_size,
"Load export section failed: "
"kind flag is unexpected.");
"invalid export kind.");
return false;
}
}
@ -989,8 +1053,7 @@ load_export_section(const uint8 *buf, const uint8 *buf_end, WASMModule *module,
if (p != p_end) {
set_error_buf(error_buf, error_buf_size,
"Load export section failed: "
"invalid section size.");
"Load export section failed: section size mismatch");
return false;
}
@ -1024,6 +1087,12 @@ load_table_segment_section(const uint8 *buf, const uint8 *buf_end, WASMModule *m
table_segment = module->table_segments;
for (i = 0; i < table_segment_count; i++, table_segment++) {
if (p >= p_end) {
set_error_buf(error_buf, error_buf_size,
"Load table segment section failed: "
"invalid value type");
return false;
}
read_leb_uint32(p, p_end, table_index);
table_segment->table_index = table_index;
@ -1052,8 +1121,7 @@ load_table_segment_section(const uint8 *buf, const uint8 *buf_end, WASMModule *m
if (p != p_end) {
set_error_buf(error_buf, error_buf_size,
"Load table segment section failed, "
"invalid section size.");
"Load table segment section failed: section size mismatch");
return false;
}
@ -1116,8 +1184,7 @@ load_data_segment_section(const uint8 *buf, const uint8 *buf_end,
if (p != p_end) {
set_error_buf(error_buf, error_buf_size,
"Load data segment section failed, "
"invalid section size.");
"Load data segment section failed: section size mismatch");
return false;
}
@ -1145,6 +1212,7 @@ load_code_section(const uint8 *buf, const uint8 *buf_end,
if (func_count != code_count) {
set_error_buf(error_buf, error_buf_size,
"Load code section failed: "
"function and code section have inconsistent lengths");
return false;
}
@ -1166,7 +1234,7 @@ load_start_section(const uint8 *buf, const uint8 *buf_end, WASMModule *module,
if (start_function >= module->function_count + module->import_function_count) {
set_error_buf(error_buf, error_buf_size,
"Load start section failed: "
"function index is out of range.");
"function index out of range.");
return false;
}
module->start_function = start_function;
@ -1174,8 +1242,7 @@ load_start_section(const uint8 *buf, const uint8 *buf_end, WASMModule *module,
if (p != p_end) {
set_error_buf(error_buf, error_buf_size,
"Load start section failed: "
"invalid section size.");
"Load start section failed: section size mismatch");
return false;
}
@ -1183,6 +1250,40 @@ load_start_section(const uint8 *buf, const uint8 *buf_end, WASMModule *module,
return true;
}
static bool
load_user_section(const uint8 *buf, const uint8 *buf_end, WASMModule *module,
char *error_buf, uint32 error_buf_size)
{
const uint8 *p = buf, *p_end = buf_end;
uint32 name_len;
if (p >= p_end) {
set_error_buf(error_buf, error_buf_size,
"Load custom section failed: unexpected end");
return false;
}
read_leb_uint32(p, p_end, name_len);
if (name_len == 0
|| p + name_len > p_end) {
set_error_buf(error_buf, error_buf_size,
"Load custom section failed: unexpected end");
return false;
}
if (!check_utf8_str(p, name_len)) {
set_error_buf(error_buf, error_buf_size,
"WASM module load failed: "
"invalid UTF-8 encoding");
return false;
}
LOG_VERBOSE("Load custom section success.\n");
return true;
}
static bool
wasm_loader_prepare_bytecode(WASMModule *module, WASMFunction *func,
char *error_buf, uint32 error_buf_size);
@ -1216,8 +1317,8 @@ load_from_sections(WASMModule *module, WASMSection *sections,
switch (section->section_type) {
case SECTION_TYPE_USER:
/* unsupported user section, ignore it. */
/* add a check to pass spec test case */
CHECK_BUF(buf, buf_end, 1);
if (!load_user_section(buf, buf_end, module, error_buf, error_buf_size))
return false;
break;
case SECTION_TYPE_TYPE:
if (!load_type_section(buf, buf_end, module, error_buf, error_buf_size))
@ -1266,7 +1367,8 @@ load_from_sections(WASMModule *module, WASMSection *sections,
return false;
break;
default:
set_error_buf(error_buf, error_buf_size, "invalid section id");
set_error_buf(error_buf, error_buf_size,
"WASM module load failed: invalid section id");
return false;
}
@ -1386,7 +1488,7 @@ create_sections(const uint8 *buf, uint32 size,
{
WASMSection *section_list_end = NULL, *section;
const uint8 *p = buf, *p_end = buf + size/*, *section_body*/;
uint8 section_type;
uint8 section_type, last_section_type = (uint8)-1;
uint32 section_size;
wasm_assert(!*p_section_list);
@ -1396,8 +1498,22 @@ create_sections(const uint8 *buf, uint32 size,
CHECK_BUF(p, p_end, 1);
section_type = read_uint8(p);
if (section_type <= SECTION_TYPE_DATA) {
if (section_type != SECTION_TYPE_USER) {
/* Custom sections may be inserted at any place,
while other sections must occur at most once
and in prescribed order. */
if (last_section_type != (uint8)-1
&& section_type <= last_section_type) {
set_error_buf(error_buf, error_buf_size,
"WASM module load failed: "
"junk after last section");
return false;
}
last_section_type = section_type;
}
CHECK_BUF1(p, p_end, 1);
read_leb_uint32(p, p_end, section_size);
CHECK_BUF(p, p_end, section_size);
CHECK_BUF1(p, p_end, section_size);
if (!(section = wasm_malloc(sizeof(WASMSection)))) {
set_error_buf(error_buf, error_buf_size,
@ -1421,7 +1537,8 @@ create_sections(const uint8 *buf, uint32 size,
p += section_size;
}
else {
set_error_buf(error_buf, error_buf_size, "invalid section id");
set_error_buf(error_buf, error_buf_size,
"WASM module load failed: invalid section id");
return false;
}
}
@ -1457,23 +1574,25 @@ load(const uint8 *buf, uint32 size, WASMModule *module,
uint32 magic_number, version;
WASMSection *section_list = NULL;
CHECK_BUF(p, p_end, sizeof(uint32));
CHECK_BUF1(p, p_end, sizeof(uint32));
magic_number = read_uint32(p);
if (!is_little_endian())
exchange32((uint8*)&magic_number);
if (magic_number != WASM_MAGIC_NUMBER) {
set_error_buf(error_buf, error_buf_size, "magic header not detected");
set_error_buf(error_buf, error_buf_size,
"WASM module load failed: magic header not detected");
return false;
}
CHECK_BUF(p, p_end, sizeof(uint32));
CHECK_BUF1(p, p_end, sizeof(uint32));
version = read_uint32(p);
if (!is_little_endian())
exchange32((uint8*)&version);
if (version != WASM_CURRENT_VERSION) {
set_error_buf(error_buf, error_buf_size, "unknown binary version");
set_error_buf(error_buf, error_buf_size,
"WASM module load failed: unknown binary version");
return false;
}
@ -2059,7 +2178,8 @@ check_stack_pop(uint8 type, uint8 *frame_ref, uint32 stack_cell_num,
|| ((type == VALUE_TYPE_I64 || type == VALUE_TYPE_F64)
&& stack_cell_num < 2)) {
set_error_buf(error_buf, error_buf_size,
"type mismatch: expected data but stack was empty");
"WASM module load failed: "
"type mismatch: expect data but stack was empty");
return false;
}
@ -2071,7 +2191,8 @@ check_stack_pop(uint8 type, uint8 *frame_ref, uint32 stack_cell_num,
&& (*(frame_ref - 2) != REF_F64_1 || *(frame_ref - 1) != REF_F64_2))) {
if (error_buf != NULL)
snprintf(error_buf, error_buf_size, "%s%s%s",
"type mismatch: expected ", type_str, " but got other");
"WASM module load failed: type mismatch: expect ",
type_str, " but got other");
return false;
}
return true;
@ -2251,7 +2372,8 @@ pop_type(uint8 type, uint8 **p_frame_ref, uint32 *p_stack_cell_num,
#define CHECK_CSP_POP() do { \
if (csp_num < 1) { \
set_error_buf(error_buf, error_buf_size, \
"type mismatch: expected data but block stack was empty");\
"WASM module load failed: type mismatch: "\
"expect data but block stack was empty"); \
goto fail; \
} \
} while (0)
@ -2281,7 +2403,8 @@ pop_type(uint8 type, uint8 **p_frame_ref, uint32 *p_stack_cell_num,
read_leb_uint32(p, p_end, local_idx); \
if (local_idx >= param_count + local_count) { \
set_error_buf(error_buf, error_buf_size, \
"invalid index: local index out of range"); \
"WASM module load failed: " \
"local index out of range"); \
goto fail; \
} \
local_type = local_idx < param_count \
@ -2291,8 +2414,9 @@ pop_type(uint8 type, uint8 **p_frame_ref, uint32 *p_stack_cell_num,
#define CHECK_BR(depth) do { \
if (csp_num < depth + 1) { \
set_error_buf(error_buf, error_buf_size, "type mismatch: " \
"expected data but block stack was empty"); \
set_error_buf(error_buf, error_buf_size, \
"WASM module load failed: type mismatch: " \
"unexpected end of section or function"); \
goto fail; \
} \
if ((frame_csp - (depth + 1))->block_type != BLOCK_TYPE_LOOP) { \
@ -2309,8 +2433,9 @@ pop_type(uint8 type, uint8 **p_frame_ref, uint32 *p_stack_cell_num,
&& (stack_cell_num < 2 \
|| *(frame_ref - 2) != REF_F64_1 \
|| *(frame_ref - 1) != REF_F64_2))) { \
set_error_buf(error_buf, error_buf_size, "type mismatch: " \
"expected data but stack was empty or other type"); \
set_error_buf(error_buf, error_buf_size, \
"WASM module load failed: type mismatch: " \
"expect data but stack was empty or other type"); \
goto fail; \
} \
(frame_csp - (depth + 1))->jumped_by_br = true; \
@ -2324,6 +2449,7 @@ check_memory(WASMModule *module,
if (module->memory_count == 0
&& module->import_memory_count == 0) {
set_error_buf(error_buf, error_buf_size,
"WASM module load failed: "
"load or store in module without default memory");
return false;
}
@ -2436,13 +2562,11 @@ wasm_loader_prepare_bytecode(WASMModule *module, WASMFunction *func,
break;
case WASM_OP_ELSE:
if (csp_num < 2) {
set_error_buf(error_buf, error_buf_size, "invalid else");
goto fail;
}
if ((frame_csp - 1)->block_type != BLOCK_TYPE_IF) {
set_error_buf(error_buf, error_buf_size, "invalid else");
if (csp_num < 2
|| (frame_csp - 1)->block_type != BLOCK_TYPE_IF) {
set_error_buf(error_buf, error_buf_size,
"WASM loader prepare bytecode failed: "
"opcode else found without matched opcode if");
goto fail;
}
@ -2594,7 +2718,9 @@ handle_op_br:
read_leb_uint32(p, p_end, func_idx);
if (func_idx >= module->import_function_count + module->function_count) {
set_error_buf(error_buf, error_buf_size, "function index is overflow");
set_error_buf(error_buf, error_buf_size,
"WASM loader prepare bytecode failed: "
"function index out of range");
goto fail;
}
@ -2623,6 +2749,7 @@ handle_op_br:
if (module->table_count == 0
&& module->import_table_count == 0) {
set_error_buf(error_buf, error_buf_size,
"WASM loader prepare bytecode failed: "
"call indirect without default table");
goto fail;
}
@ -2632,6 +2759,7 @@ handle_op_br:
/* reserved byte 0x00 */
if (*p++ != 0x00) {
set_error_buf(error_buf, error_buf_size,
"WASM loader prepare bytecode failed: "
"zero flag expected");
goto fail;
}
@ -2640,7 +2768,8 @@ handle_op_br:
if (type_idx >= module->type_count) {
set_error_buf(error_buf, error_buf_size,
"function index is overflow");
"WASM loader prepare bytecode failed: "
"function index out of range");
goto fail;
}
@ -2659,7 +2788,8 @@ handle_op_br:
{
if (stack_cell_num <= 0) {
set_error_buf(error_buf, error_buf_size,
"invalid drop: stack was empty");
"WASM loader prepare bytecode failed: "
"opcode drop was found but stack was empty");
goto fail;
}
@ -2672,7 +2802,8 @@ handle_op_br:
else {
if (stack_cell_num <= 1) {
set_error_buf(error_buf, error_buf_size,
"invalid drop: stack was empty");
"WASM loader prepare bytecode failed: "
"opcode drop was found but stack was empty");
goto fail;
}
frame_ref -= 2;
@ -2690,7 +2821,8 @@ handle_op_br:
if (stack_cell_num <= 0) {
set_error_buf(error_buf, error_buf_size,
"invalid drop: stack was empty");
"WASM loader prepare bytecode failed: "
"opcode select was found but stack was empty");
goto fail;
}
@ -2739,7 +2871,8 @@ handle_op_br:
read_leb_uint32(p, p_end, global_idx);
if (global_idx >= global_count) {
set_error_buf(error_buf, error_buf_size,
"invalid index: global index out of range");
"WASM loader prepare bytecode failed: "
"global index out of range");
goto fail;
}
@ -2756,7 +2889,8 @@ handle_op_br:
read_leb_uint32(p, p_end, global_idx);
if (global_idx >= global_count) {
set_error_buf(error_buf, error_buf_size,
"invalid index: global index out of range");
"WASM loader prepare bytecode failed: "
"global index out of range");
goto fail;
}
@ -2852,6 +2986,7 @@ handle_op_br:
/* reserved byte 0x00 */
if (*p++ != 0x00) {
set_error_buf(error_buf, error_buf_size,
"WASM loader prepare bytecode failed: "
"zero flag expected");
goto fail;
}
@ -2863,6 +2998,7 @@ handle_op_br:
/* reserved byte 0x00 */
if (*p++ != 0x00) {
set_error_buf(error_buf, error_buf_size,
"WASM loader prepare bytecode failed: "
"zero flag expected");
goto fail;
}

11
core/iwasm/runtime/vmcore-wasm/wasm_runtime.c
View File

@ -358,7 +358,9 @@ tables_instantiate(const WASMModule *module,
return NULL;
}
memset(table, 0, (uint32)total_size);
/* Set all elements to -1 to mark them as uninitialized elements */
memset(table, -1, (uint32)total_size);
table->elem_type = import->u.table.elem_type;
table->cur_size = import->u.table.init_size;
table->max_size = import->u.table.max_size;
}
@ -376,7 +378,9 @@ tables_instantiate(const WASMModule *module,
return NULL;
}
memset(table, 0, (uint32)total_size);
/* Set all elements to -1 to mark them as uninitialized elements */
memset(table, -1, (uint32)total_size);
table->elem_type = module->tables[i].elem_type;
table->cur_size = module->tables[i].init_size;
table->max_size = module->tables[i].max_size;
}
@ -683,9 +687,6 @@ export_functions_instantiate(const WASMModule *module,
for (i = 0; i < module->export_count; i++, export++)
if (export->kind == EXPORT_KIND_FUNC) {
wasm_assert(export->index >= module->import_function_count
&& export->index < module->import_function_count
+ module->function_count);
export_func->name = export->name;
export_func->function = &module_inst->functions[export->index];
export_func++;

1
doc/build_wasm_app.md
View File

@ -63,6 +63,7 @@ deb-src http://apt.llvm.org/bionic/ llvm-toolchain-bionic-8 main
# 9
deb http://apt.llvm.org/bionic/ llvm-toolchain-bionic-9 main
deb-src http://apt.llvm.org/bionic/ llvm-toolchain-bionic-9 main
```
(2) Download and install clang-8 tool-chain using following commands: