650 lines
20 KiB
C
650 lines
20 KiB
C
//
|
|
// m3_parse.c
|
|
//
|
|
// Created by Steven Massey on 4/19/19.
|
|
// Copyright © 2019 Steven Massey. All rights reserved.
|
|
//
|
|
|
|
#include "m3_env.h"
|
|
#include "m3_compile.h"
|
|
#include "m3_exception.h"
|
|
#include "m3_info.h"
|
|
|
|
|
|
M3Result ParseType_Table (IM3Module io_module, bytes_t i_bytes, cbytes_t i_end)
|
|
{
|
|
M3Result result = m3Err_none;
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
M3Result ParseType_Memory (M3MemoryInfo * o_memory, bytes_t * io_bytes, cbytes_t i_end)
|
|
{
|
|
M3Result result = m3Err_none;
|
|
|
|
u8 flag;
|
|
|
|
_ (ReadLEB_u7 (& flag, io_bytes, i_end)); // really a u1
|
|
_ (ReadLEB_u32 (& o_memory->initPages, io_bytes, i_end));
|
|
|
|
o_memory->maxPages = 0;
|
|
if (flag)
|
|
_ (ReadLEB_u32 (& o_memory->maxPages, io_bytes, i_end));
|
|
|
|
_catch: return result;
|
|
}
|
|
|
|
|
|
M3Result ParseSection_Type (IM3Module io_module, bytes_t i_bytes, cbytes_t i_end)
|
|
{
|
|
IM3FuncType ftype = NULL;
|
|
|
|
_try {
|
|
u32 numTypes;
|
|
_ (ReadLEB_u32 (& numTypes, & i_bytes, i_end)); m3log (parse, "** Type [%d]", numTypes);
|
|
|
|
_throwif("too many types", numTypes > d_m3MaxSaneTypesCount);
|
|
|
|
if (numTypes)
|
|
{
|
|
// table of IM3FuncType (that point to the actual M3FuncType struct in the Environment)
|
|
io_module->funcTypes = m3_AllocArray (IM3FuncType, numTypes);
|
|
_throwifnull (io_module->funcTypes);
|
|
io_module->numFuncTypes = numTypes;
|
|
|
|
for (u32 i = 0; i < numTypes; ++i)
|
|
{
|
|
i8 form;
|
|
_ (ReadLEB_i7 (& form, & i_bytes, i_end));
|
|
_throwif (m3Err_wasmMalformed, form != -32); // for Wasm MVP
|
|
|
|
u32 numArgs;
|
|
_ (ReadLEB_u32 (& numArgs, & i_bytes, i_end));
|
|
|
|
_throwif (m3Err_tooManyArgsRets, numArgs > d_m3MaxSaneFunctionArgRetCount);
|
|
#if defined(M3_COMPILER_MSVC)
|
|
u8 argTypes [d_m3MaxSaneFunctionArgRetCount];
|
|
#else
|
|
u8 argTypes[numArgs+1]; // make ubsan happy
|
|
#endif
|
|
for (u32 a = 0; a < numArgs; ++a)
|
|
{
|
|
i8 wasmType;
|
|
u8 argType;
|
|
_ (ReadLEB_i7 (& wasmType, & i_bytes, i_end));
|
|
_ (NormalizeType (& argType, wasmType));
|
|
|
|
argTypes[a] = argType;
|
|
}
|
|
|
|
u32 numRets;
|
|
_ (ReadLEB_u32 (& numRets, & i_bytes, i_end));
|
|
_throwif (m3Err_tooManyArgsRets, (u64)(numRets) + numArgs > d_m3MaxSaneFunctionArgRetCount);
|
|
|
|
_ (AllocFuncType (& ftype, numRets + numArgs));
|
|
ftype->numArgs = numArgs;
|
|
ftype->numRets = numRets;
|
|
|
|
for (u32 r = 0; r < numRets; ++r)
|
|
{
|
|
i8 wasmType;
|
|
u8 retType;
|
|
_ (ReadLEB_i7 (& wasmType, & i_bytes, i_end));
|
|
_ (NormalizeType (& retType, wasmType));
|
|
|
|
ftype->types[r] = retType;
|
|
}
|
|
memcpy (ftype->types + numRets, argTypes, numArgs); m3log (parse, " type %2d: %s", i, SPrintFuncTypeSignature (ftype));
|
|
|
|
Environment_AddFuncType (io_module->environment, & ftype);
|
|
io_module->funcTypes [i] = ftype;
|
|
ftype = NULL; // ownership transferred to environment
|
|
}
|
|
}
|
|
|
|
} _catch:
|
|
|
|
if (result)
|
|
{
|
|
m3_Free (ftype);
|
|
// FIX: M3FuncTypes in the table are leaked
|
|
m3_Free (io_module->funcTypes);
|
|
io_module->numFuncTypes = 0;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
M3Result ParseSection_Function (IM3Module io_module, bytes_t i_bytes, cbytes_t i_end)
|
|
{
|
|
M3Result result = m3Err_none;
|
|
|
|
u32 numFunctions;
|
|
_ (ReadLEB_u32 (& numFunctions, & i_bytes, i_end)); m3log (parse, "** Function [%d]", numFunctions);
|
|
|
|
_throwif("too many functions", numFunctions > d_m3MaxSaneFunctionsCount);
|
|
|
|
_ (Module_PreallocFunctions(io_module, io_module->numFunctions + numFunctions));
|
|
|
|
for (u32 i = 0; i < numFunctions; ++i)
|
|
{
|
|
u32 funcTypeIndex;
|
|
_ (ReadLEB_u32 (& funcTypeIndex, & i_bytes, i_end));
|
|
|
|
_ (Module_AddFunction (io_module, funcTypeIndex, NULL /* import info */));
|
|
}
|
|
|
|
_catch: return result;
|
|
}
|
|
|
|
|
|
M3Result ParseSection_Import (IM3Module io_module, bytes_t i_bytes, cbytes_t i_end)
|
|
{
|
|
M3Result result = m3Err_none;
|
|
|
|
M3ImportInfo import = { NULL, NULL }, clearImport = { NULL, NULL };
|
|
|
|
u32 numImports;
|
|
_ (ReadLEB_u32 (& numImports, & i_bytes, i_end)); m3log (parse, "** Import [%d]", numImports);
|
|
|
|
_throwif("too many imports", numImports > d_m3MaxSaneImportsCount);
|
|
|
|
// Most imports are functions, so we won't waste much space anyway (if any)
|
|
_ (Module_PreallocFunctions(io_module, numImports));
|
|
|
|
for (u32 i = 0; i < numImports; ++i)
|
|
{
|
|
u8 importKind;
|
|
|
|
_ (Read_utf8 (& import.moduleUtf8, & i_bytes, i_end));
|
|
_ (Read_utf8 (& import.fieldUtf8, & i_bytes, i_end));
|
|
_ (Read_u8 (& importKind, & i_bytes, i_end)); m3log (parse, " kind: %d '%s.%s' ",
|
|
(u32) importKind, import.moduleUtf8, import.fieldUtf8);
|
|
switch (importKind)
|
|
{
|
|
case d_externalKind_function:
|
|
{
|
|
u32 typeIndex;
|
|
_ (ReadLEB_u32 (& typeIndex, & i_bytes, i_end))
|
|
|
|
_ (Module_AddFunction (io_module, typeIndex, & import))
|
|
import = clearImport;
|
|
|
|
io_module->numFuncImports++;
|
|
}
|
|
break;
|
|
|
|
case d_externalKind_table:
|
|
// result = ParseType_Table (& i_bytes, i_end);
|
|
break;
|
|
|
|
case d_externalKind_memory:
|
|
{
|
|
_ (ParseType_Memory (& io_module->memoryInfo, & i_bytes, i_end));
|
|
io_module->memoryImported = true;
|
|
}
|
|
break;
|
|
|
|
case d_externalKind_global:
|
|
{
|
|
i8 waType;
|
|
u8 type, isMutable;
|
|
|
|
_ (ReadLEB_i7 (& waType, & i_bytes, i_end));
|
|
_ (NormalizeType (& type, waType));
|
|
_ (ReadLEB_u7 (& isMutable, & i_bytes, i_end)); m3log (parse, " global: %s mutable=%d", c_waTypes [type], (u32) isMutable);
|
|
|
|
IM3Global global;
|
|
_ (Module_AddGlobal (io_module, & global, type, isMutable, true /* isImport */));
|
|
global->import = import;
|
|
import = clearImport;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
_throw (m3Err_wasmMalformed);
|
|
}
|
|
|
|
FreeImportInfo (& import);
|
|
}
|
|
|
|
_catch:
|
|
|
|
FreeImportInfo (& import);
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
M3Result ParseSection_Export (IM3Module io_module, bytes_t i_bytes, cbytes_t i_end)
|
|
{
|
|
M3Result result = m3Err_none;
|
|
const char * utf8 = NULL;
|
|
|
|
u32 numExports;
|
|
_ (ReadLEB_u32 (& numExports, & i_bytes, i_end)); m3log (parse, "** Export [%d]", numExports);
|
|
|
|
_throwif("too many exports", numExports > d_m3MaxSaneExportsCount);
|
|
|
|
for (u32 i = 0; i < numExports; ++i)
|
|
{
|
|
u8 exportKind;
|
|
u32 index;
|
|
|
|
_ (Read_utf8 (& utf8, & i_bytes, i_end));
|
|
_ (Read_u8 (& exportKind, & i_bytes, i_end));
|
|
_ (ReadLEB_u32 (& index, & i_bytes, i_end)); m3log (parse, " index: %3d; kind: %d; export: '%s'; ", index, (u32) exportKind, utf8);
|
|
|
|
if (exportKind == d_externalKind_function)
|
|
{
|
|
_throwif(m3Err_wasmMalformed, index >= io_module->numFunctions);
|
|
IM3Function func = &(io_module->functions [index]);
|
|
if (func->numNames < d_m3MaxDuplicateFunctionImpl)
|
|
{
|
|
func->names[func->numNames++] = utf8;
|
|
utf8 = NULL; // ownership transferred to M3Function
|
|
}
|
|
}
|
|
else if (exportKind == d_externalKind_global)
|
|
{
|
|
_throwif(m3Err_wasmMalformed, index >= io_module->numGlobals);
|
|
IM3Global global = &(io_module->globals [index]);
|
|
m3_Free (global->name);
|
|
global->name = utf8;
|
|
utf8 = NULL; // ownership transferred to M3Global
|
|
}
|
|
|
|
m3_Free (utf8);
|
|
}
|
|
|
|
_catch:
|
|
m3_Free (utf8);
|
|
return result;
|
|
}
|
|
|
|
|
|
M3Result ParseSection_Start (IM3Module io_module, bytes_t i_bytes, cbytes_t i_end)
|
|
{
|
|
M3Result result = m3Err_none;
|
|
|
|
u32 startFuncIndex;
|
|
_ (ReadLEB_u32 (& startFuncIndex, & i_bytes, i_end)); m3log (parse, "** Start Function: %d", startFuncIndex);
|
|
|
|
if (startFuncIndex < io_module->numFunctions)
|
|
{
|
|
io_module->startFunction = startFuncIndex;
|
|
}
|
|
else result = "start function index out of bounds";
|
|
|
|
_catch: return result;
|
|
}
|
|
|
|
|
|
M3Result Parse_InitExpr (M3Module * io_module, bytes_t * io_bytes, cbytes_t i_end)
|
|
{
|
|
M3Result result = m3Err_none;
|
|
|
|
// this doesn't generate code pages. just walks the wasm bytecode to find the end
|
|
|
|
#if defined(d_m3PreferStaticAlloc)
|
|
static M3Compilation compilation;
|
|
#else
|
|
M3Compilation compilation;
|
|
#endif
|
|
compilation = (M3Compilation){ .runtime = NULL, .module = io_module, .wasm = * io_bytes, .wasmEnd = i_end };
|
|
|
|
result = CompileBlockStatements (& compilation);
|
|
|
|
* io_bytes = compilation.wasm;
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
M3Result ParseSection_Element (IM3Module io_module, bytes_t i_bytes, cbytes_t i_end)
|
|
{
|
|
M3Result result = m3Err_none;
|
|
|
|
u32 numSegments;
|
|
_ (ReadLEB_u32 (& numSegments, & i_bytes, i_end)); m3log (parse, "** Element [%d]", numSegments);
|
|
|
|
_throwif ("too many element segments", numSegments > d_m3MaxSaneElementSegments);
|
|
|
|
io_module->elementSection = i_bytes;
|
|
io_module->elementSectionEnd = i_end;
|
|
io_module->numElementSegments = numSegments;
|
|
|
|
_catch: return result;
|
|
}
|
|
|
|
|
|
M3Result ParseSection_Code (M3Module * io_module, bytes_t i_bytes, cbytes_t i_end)
|
|
{
|
|
M3Result result;
|
|
|
|
u32 numFunctions;
|
|
_ (ReadLEB_u32 (& numFunctions, & i_bytes, i_end)); m3log (parse, "** Code [%d]", numFunctions);
|
|
|
|
if (numFunctions != io_module->numFunctions - io_module->numFuncImports)
|
|
{
|
|
_throw ("mismatched function count in code section");
|
|
}
|
|
|
|
for (u32 f = 0; f < numFunctions; ++f)
|
|
{
|
|
const u8 * start = i_bytes;
|
|
|
|
u32 size;
|
|
_ (ReadLEB_u32 (& size, & i_bytes, i_end));
|
|
|
|
if (size)
|
|
{
|
|
const u8 * ptr = i_bytes;
|
|
i_bytes += size;
|
|
|
|
if (i_bytes <= i_end)
|
|
{
|
|
/*
|
|
u32 numLocalBlocks;
|
|
_ (ReadLEB_u32 (& numLocalBlocks, & ptr, i_end)); m3log (parse, " code size: %-4d", size);
|
|
|
|
u32 numLocals = 0;
|
|
|
|
for (u32 l = 0; l < numLocalBlocks; ++l)
|
|
{
|
|
u32 varCount;
|
|
i8 wasmType;
|
|
u8 normalType;
|
|
|
|
_ (ReadLEB_u32 (& varCount, & ptr, i_end));
|
|
_ (ReadLEB_i7 (& wasmType, & ptr, i_end));
|
|
_ (NormalizeType (& normalType, wasmType));
|
|
|
|
numLocals += varCount; m3log (parse, " %2d locals; type: '%s'", varCount, c_waTypes [normalType]);
|
|
}
|
|
*/
|
|
|
|
IM3Function func = Module_GetFunction (io_module, f + io_module->numFuncImports);
|
|
|
|
func->module = io_module;
|
|
func->wasm = start;
|
|
func->wasmEnd = i_bytes;
|
|
//func->ownsWasmCode = io_module->hasWasmCodeCopy;
|
|
// func->numLocals = numLocals;
|
|
}
|
|
else _throw (m3Err_wasmSectionOverrun);
|
|
}
|
|
}
|
|
|
|
_catch:
|
|
|
|
if (not result and i_bytes != i_end)
|
|
result = m3Err_wasmSectionUnderrun;
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
M3Result ParseSection_Data (M3Module * io_module, bytes_t i_bytes, cbytes_t i_end)
|
|
{
|
|
M3Result result = m3Err_none;
|
|
|
|
u32 numDataSegments;
|
|
_ (ReadLEB_u32 (& numDataSegments, & i_bytes, i_end)); m3log (parse, "** Data [%d]", numDataSegments);
|
|
|
|
_throwif("too many data segments", numDataSegments > d_m3MaxSaneDataSegments);
|
|
|
|
io_module->dataSegments = m3_AllocArray (M3DataSegment, numDataSegments);
|
|
_throwifnull(io_module->dataSegments);
|
|
io_module->numDataSegments = numDataSegments;
|
|
|
|
for (u32 i = 0; i < numDataSegments; ++i)
|
|
{
|
|
M3DataSegment * segment = & io_module->dataSegments [i];
|
|
|
|
_ (ReadLEB_u32 (& segment->memoryRegion, & i_bytes, i_end));
|
|
|
|
segment->initExpr = i_bytes;
|
|
_ (Parse_InitExpr (io_module, & i_bytes, i_end));
|
|
segment->initExprSize = (u32) (i_bytes - segment->initExpr);
|
|
|
|
_throwif (m3Err_wasmMissingInitExpr, segment->initExprSize <= 1);
|
|
|
|
_ (ReadLEB_u32 (& segment->size, & i_bytes, i_end));
|
|
segment->data = i_bytes; m3log (parse, " segment [%u] memory: %u; expr-size: %d; size: %d",
|
|
i, segment->memoryRegion, segment->initExprSize, segment->size);
|
|
i_bytes += segment->size;
|
|
|
|
_throwif("data segment underflow", i_bytes > i_end);
|
|
}
|
|
|
|
_catch:
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
M3Result ParseSection_Memory (M3Module * io_module, bytes_t i_bytes, cbytes_t i_end)
|
|
{
|
|
M3Result result = m3Err_none;
|
|
|
|
// TODO: MVP; assert no memory imported
|
|
|
|
u32 numMemories;
|
|
_ (ReadLEB_u32 (& numMemories, & i_bytes, i_end)); m3log (parse, "** Memory [%d]", numMemories);
|
|
|
|
_throwif (m3Err_tooManyMemorySections, numMemories != 1);
|
|
|
|
ParseType_Memory (& io_module->memoryInfo, & i_bytes, i_end);
|
|
|
|
_catch: return result;
|
|
}
|
|
|
|
|
|
M3Result ParseSection_Global (M3Module * io_module, bytes_t i_bytes, cbytes_t i_end)
|
|
{
|
|
M3Result result = m3Err_none;
|
|
|
|
u32 numGlobals;
|
|
_ (ReadLEB_u32 (& numGlobals, & i_bytes, i_end)); m3log (parse, "** Global [%d]", numGlobals);
|
|
|
|
_throwif("too many globals", numGlobals > d_m3MaxSaneGlobalsCount);
|
|
|
|
for (u32 i = 0; i < numGlobals; ++i)
|
|
{
|
|
i8 waType;
|
|
u8 type, isMutable;
|
|
|
|
_ (ReadLEB_i7 (& waType, & i_bytes, i_end));
|
|
_ (NormalizeType (& type, waType));
|
|
_ (ReadLEB_u7 (& isMutable, & i_bytes, i_end)); m3log (parse, " global: [%d] %s mutable: %d", i, c_waTypes [type], (u32) isMutable);
|
|
|
|
IM3Global global;
|
|
_ (Module_AddGlobal (io_module, & global, type, isMutable, false /* isImport */));
|
|
|
|
global->initExpr = i_bytes;
|
|
_ (Parse_InitExpr (io_module, & i_bytes, i_end));
|
|
global->initExprSize = (u32) (i_bytes - global->initExpr);
|
|
|
|
_throwif (m3Err_wasmMissingInitExpr, global->initExprSize <= 1);
|
|
}
|
|
|
|
_catch: return result;
|
|
}
|
|
|
|
|
|
M3Result ParseSection_Name (M3Module * io_module, bytes_t i_bytes, cbytes_t i_end)
|
|
{
|
|
M3Result result;
|
|
|
|
cstr_t name;
|
|
|
|
while (i_bytes < i_end)
|
|
{
|
|
u8 nameType;
|
|
u32 payloadLength;
|
|
|
|
_ (ReadLEB_u7 (& nameType, & i_bytes, i_end));
|
|
_ (ReadLEB_u32 (& payloadLength, & i_bytes, i_end));
|
|
|
|
bytes_t start = i_bytes;
|
|
if (nameType == 1)
|
|
{
|
|
u32 numNames;
|
|
_ (ReadLEB_u32 (& numNames, & i_bytes, i_end));
|
|
|
|
_throwif("too many names", numNames > d_m3MaxSaneFunctionsCount);
|
|
|
|
for (u32 i = 0; i < numNames; ++i)
|
|
{
|
|
u32 index;
|
|
_ (ReadLEB_u32 (& index, & i_bytes, i_end));
|
|
_ (Read_utf8 (& name, & i_bytes, i_end));
|
|
|
|
if (index < io_module->numFunctions)
|
|
{
|
|
IM3Function func = &(io_module->functions [index]);
|
|
if (func->numNames == 0)
|
|
{
|
|
func->names[0] = name; m3log (parse, " naming function%5d: %s", index, name);
|
|
func->numNames = 1;
|
|
name = NULL; // transfer ownership
|
|
}
|
|
// else m3log (parse, "prenamed: %s", io_module->functions [index].name);
|
|
}
|
|
|
|
m3_Free (name);
|
|
}
|
|
}
|
|
|
|
i_bytes = start + payloadLength;
|
|
}
|
|
|
|
_catch: return result;
|
|
}
|
|
|
|
|
|
M3Result ParseSection_Custom (M3Module * io_module, bytes_t i_bytes, cbytes_t i_end)
|
|
{
|
|
M3Result result;
|
|
|
|
cstr_t name;
|
|
_ (Read_utf8 (& name, & i_bytes, i_end));
|
|
m3log (parse, "** Custom: '%s'", name);
|
|
if (strcmp (name, "name") == 0) {
|
|
_ (ParseSection_Name(io_module, i_bytes, i_end));
|
|
} else if (io_module->environment->customSectionHandler) {
|
|
_ (io_module->environment->customSectionHandler(io_module, name, i_bytes, i_end));
|
|
}
|
|
|
|
m3_Free (name);
|
|
|
|
_catch: return result;
|
|
}
|
|
|
|
|
|
M3Result ParseModuleSection (M3Module * o_module, u8 i_sectionType, bytes_t i_bytes, u32 i_numBytes)
|
|
{
|
|
M3Result result = m3Err_none;
|
|
|
|
typedef M3Result (* M3Parser) (M3Module *, bytes_t, cbytes_t);
|
|
|
|
static M3Parser s_parsers [] =
|
|
{
|
|
ParseSection_Custom, // 0
|
|
ParseSection_Type, // 1
|
|
ParseSection_Import, // 2
|
|
ParseSection_Function, // 3
|
|
NULL, // 4: TODO Table
|
|
ParseSection_Memory, // 5
|
|
ParseSection_Global, // 6
|
|
ParseSection_Export, // 7
|
|
ParseSection_Start, // 8
|
|
ParseSection_Element, // 9
|
|
ParseSection_Code, // 10
|
|
ParseSection_Data, // 11
|
|
NULL, // 12: TODO DataCount
|
|
};
|
|
|
|
M3Parser parser = NULL;
|
|
|
|
if (i_sectionType <= 12)
|
|
parser = s_parsers [i_sectionType];
|
|
|
|
if (parser)
|
|
{
|
|
cbytes_t end = i_bytes + i_numBytes;
|
|
result = parser (o_module, i_bytes, end);
|
|
}
|
|
else
|
|
{
|
|
m3log (parse, " skipped section type: %d", (u32) i_sectionType);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
M3Result m3_ParseModule (IM3Environment i_environment, IM3Module * o_module, cbytes_t i_bytes, u32 i_numBytes)
|
|
{
|
|
IM3Module module; m3log (parse, "load module: %d bytes", i_numBytes);
|
|
_try {
|
|
module = m3_AllocStruct (M3Module);
|
|
_throwifnull (module);
|
|
module->name = ".unnamed"; m3log (parse, "load module: %d bytes", i_numBytes);
|
|
module->startFunction = -1;
|
|
//module->hasWasmCodeCopy = false;
|
|
module->environment = i_environment;
|
|
|
|
const u8 * pos = i_bytes;
|
|
const u8 * end = pos + i_numBytes;
|
|
|
|
module->wasmStart = pos;
|
|
module->wasmEnd = end;
|
|
|
|
u32 magic, version;
|
|
_ (Read_u32 (& magic, & pos, end));
|
|
_ (Read_u32 (& version, & pos, end));
|
|
|
|
_throwif (m3Err_wasmMalformed, magic != 0x6d736100);
|
|
_throwif (m3Err_incompatibleWasmVersion, version != 1);
|
|
|
|
static const u8 sectionsOrder[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 12, 10, 11, 0 }; // 0 is a placeholder
|
|
u8 expectedSection = 0;
|
|
|
|
while (pos < end)
|
|
{
|
|
u8 section;
|
|
_ (ReadLEB_u7 (& section, & pos, end));
|
|
|
|
if (section != 0) {
|
|
// Ensure sections appear only once and in order
|
|
while (sectionsOrder[expectedSection++] != section) {
|
|
_throwif(m3Err_misorderedWasmSection, expectedSection >= 12);
|
|
}
|
|
}
|
|
|
|
u32 sectionLength;
|
|
_ (ReadLEB_u32 (& sectionLength, & pos, end));
|
|
_throwif(m3Err_wasmMalformed, pos + sectionLength > end);
|
|
|
|
_ (ParseModuleSection (module, section, pos, sectionLength));
|
|
|
|
pos += sectionLength;
|
|
}
|
|
|
|
} _catch:
|
|
|
|
if (result)
|
|
{
|
|
m3_FreeModule (module);
|
|
module = NULL;
|
|
}
|
|
|
|
* o_module = module;
|
|
|
|
return result;
|
|
}
|