private static void EmitStringInit(TypeSpec tdr, Stream hmsw, Stream cmsw,
List <string> advance_defines, List <string> external_defines, List <string> header_funcs, Target ass)
{
// Emit a string creation instruction of the form:
// void CreateString(System_String **obj, const char *s)
string init_func = "void CreateString(struct System_String **obj, const char *s)";
header_funcs.Add(init_func + ";");
HexFile.writeStr(cmsw, init_func);
HexFile.writeStr(cmsw, "{");
HexFile.writeStr(cmsw, " int i;");
HexFile.writeStr(cmsw, " int l = s == NULL ? 0 : strlen(s);");
HexFile.writeStr(cmsw, " " + ass.GetCType(tdr.m.SystemChar) + " *p;");
HexFile.writeStr(cmsw, " *obj = (struct System_String *)malloc(sizeof(struct System_String) + l * sizeof(" +
ass.GetCType(tdr.m.SystemChar) + "));");
HexFile.writeStr(cmsw, " Init_System_String(*obj);");
HexFile.writeStr(cmsw, " (*obj)->m_stringLength = l;");
HexFile.writeStr(cmsw, " p = &((*obj)->m_firstChar);");
//HexFile.writeStr(cmsw, " p = (" + ass.GetCType(BaseType_Type.Char) +
// " *)(*obj + sizeof(struct System_String));");
HexFile.writeStr(cmsw, " for(i = 0; i < l; i++)");
HexFile.writeStr(cmsw, " p[i] = (" + ass.GetCType(tdr.m.SystemChar) + ")s[i];");
HexFile.writeStr(cmsw, "}");
HexFile.writeStr(cmsw);
}
private static void EmitArrayInit(TypeSpec ts, string tname, Stream hmsw, Stream cmsw,
List <string> header_funcs, Target ass)
{
string typestr = ass.GetCType(ts);
string init_func_name = "void* Create_" + tname + "_Array(struct __array **arr_obj, int32_t length)";
/* Arrays have four pieces of memory allocated:
* - The array superblock
* - The lobounds array
* - The sizes array
* - The actual array data
*
* We do not allocate the last 3, as they may need to be placed at a different virtual address
* when relocated - let the implementation decide this
*
* Code is:
*
* struct __array
* {
* intptr __vtbl;
* int32_t __object_id;
* int64_t __mutex_lock;
* int32_t rank;
* int32_t elem_size;
* intptr lobounds;
* intptr sizes;
* intptr inner_array;
* } __attribute__((__packed__));
*
* void Create_X_Array(__array **arr_obj, int32_t num_elems)
* {
* *arr_obj = (__array *)malloc(sizeof(arr_obj));
* (*arr_obj)->rank = 1;
* }
*/
//int elem_size = ass.GetPackedSizeOf(new Signature.Param(baseType_Type));
header_funcs.Add(init_func_name + ";");
HexFile.writeStr(cmsw, init_func_name);
HexFile.writeStr(cmsw, "{");
HexFile.writeStr(cmsw, " *arr_obj = (struct __array *)malloc(sizeof(struct __array));");
HexFile.writeStr(cmsw, " (*arr_obj)->__vtbl = Get_Symbol_Addr(\"" + ts.SzArray.MangleType() + "\");");
HexFile.writeStr(cmsw, " (*arr_obj)->__mutex_lock = 0;");
HexFile.writeStr(cmsw, " (*arr_obj)->rank = 1;");
HexFile.writeStr(cmsw, " (*arr_obj)->elem_size = sizeof(" + typestr + ");");
HexFile.writeStr(cmsw, " (*arr_obj)->elemtype = Get_Symbol_Addr(\"" + ts.MangleType() + "\");");
HexFile.writeStr(cmsw, " (*arr_obj)->lobounds = (INTPTR)(intptr_t)malloc(sizeof(int32_t));");
HexFile.writeStr(cmsw, " (*arr_obj)->sizes = (INTPTR)(intptr_t)malloc(sizeof(int32_t));");
HexFile.writeStr(cmsw, " (*arr_obj)->inner_array = (INTPTR)(intptr_t)malloc(length * sizeof(" + typestr + "));");
HexFile.writeStr(cmsw, " *(int32_t *)(intptr_t)((*arr_obj)->lobounds) = 0;");
HexFile.writeStr(cmsw, " *(int32_t *)(intptr_t)((*arr_obj)->sizes) = length;");
HexFile.writeStr(cmsw, " return((void *)(intptr_t)((*arr_obj)->inner_array));");
HexFile.writeStr(cmsw, "}");
HexFile.writeStr(cmsw);
}
private static void EmitArrayType(Stream hmsw, Target ass, MetadataStream m)
{
HexFile.writeStr(hmsw, "struct __array");
HexFile.writeStr(hmsw, "{");
HexFile.writeStr(hmsw, " INTPTR __vtbl;");
HexFile.writeStr(hmsw, " int64_t __mutex_lock;");
HexFile.writeStr(hmsw, " INTPTR elemtype;");
HexFile.writeStr(hmsw, " INTPTR lobounds;");
HexFile.writeStr(hmsw, " INTPTR sizes;");
HexFile.writeStr(hmsw, " INTPTR inner_array;");
HexFile.writeStr(hmsw, " INTPTR rank;");
HexFile.writeStr(hmsw, " int32_t elem_size;");
//if (packed_structs)
// HexFile.writeStr(hmsw, "} __attribute__((__packed__));");
//else
HexFile.writeStr(hmsw, "};");
HexFile.writeStr(hmsw);
}
internal static void WriteHeader(MetadataStream m, Target ass, string output_header,
string output_cinit)
{
FileStream fs = new FileStream(output_header, FileMode.Create, FileAccess.Write);
var sw = fs;
var hmsw = new MemoryStream();
var cmsw = new MemoryStream();
FileStream oci = null;
System.IO.FileInfo header_fi = new FileInfo(output_header);
if (output_cinit != null)
{
oci = new FileStream(output_cinit, FileMode.Create, FileAccess.Write);
HexFile.writeStr(oci, "#include \"" + header_fi.Name + "\"", true);
HexFile.writeStr(oci, "#include <string.h>", true);
HexFile.writeStr(oci, "#include <stdlib.h>", true);
HexFile.writeStr(oci, "#include <stdint.h>", true);
HexFile.writeStr(oci, "#include <stddef.h>", true);
HexFile.writeStr(oci, "", true);
HexFile.writeStr(oci, "INTPTR Get_Symbol_Addr(const char *name);", true);
HexFile.writeStr(oci, "", true);
}
List <string> advance_defines = new List <string>();
List <string> external_defines = new List <string>();
List <string> func_headers = new List <string>();
EmitType(m.GetSimpleTypeSpec(0x1c), hmsw, cmsw, advance_defines,
external_defines, func_headers, ass);
EmitType(m.GetSimpleTypeSpec(0xe), hmsw, cmsw, advance_defines,
external_defines, func_headers, ass);
EmitArrayInit(hmsw, cmsw, func_headers, ass, m);
for (int i = 1; i <= m.table_rows[MetadataStream.tid_CustomAttribute]; i++)
{
int type_tid, type_row;
m.GetCodedIndexEntry(MetadataStream.tid_CustomAttribute,
i, 1, m.CustomAttributeType, out type_tid,
out type_row);
MethodSpec ca_ms;
m.GetMethodDefRow(type_tid, type_row, out ca_ms);
var ca_ms_name = ca_ms.MangleMethod();
if (ca_ms_name == "_ZN14libsupcs#2Edll8libsupcs22OutputCHeaderAttribute_7#2Ector_Rv_P1u1t")
{
int parent_tid, parent_row;
m.GetCodedIndexEntry(MetadataStream.tid_CustomAttribute,
i, 0, m.HasCustomAttribute, out parent_tid,
out parent_row);
if (parent_tid == MetadataStream.tid_TypeDef)
{
var ts = m.GetTypeSpec(parent_tid, parent_row);
EmitType(ts, hmsw, cmsw, advance_defines,
external_defines, func_headers, ass);
}
}
}
HexFile.writeStr(sw, "");
HexFile.writeStr(sw, "#include <stdint.h>");
HexFile.writeStr(sw, "");
HexFile.writeStr(sw, "#ifdef INTPTR");
HexFile.writeStr(sw, "#undef INTPTR");
HexFile.writeStr(sw, "#endif");
HexFile.writeStr(sw, "#ifdef UINTPTR");
HexFile.writeStr(sw, "#undef UINTPTR");
HexFile.writeStr(sw, "#endif");
HexFile.writeStr(sw, "");
HexFile.writeStr(sw, "#define INTPTR " + ((ass.GetPointerSize() == 4) ? ass.GetCType(m.SystemInt32) : ass.GetCType(m.SystemInt64)));
HexFile.writeStr(sw, "#define UINTPTR " + ((ass.GetPointerSize() == 4) ? ass.GetCType(m.GetSimpleTypeSpec(0x09)) : ass.GetCType(m.GetSimpleTypeSpec(0x0b))));
HexFile.writeStr(sw, "");
EmitArrayType(sw, ass, m);
foreach (string s in advance_defines)
{
HexFile.writeStr(sw, s);
}
HexFile.writeStr(sw, "");
if (oci != null)
{
foreach (string s2 in func_headers)
{
HexFile.writeStr(sw, s2);
}
HexFile.writeStr(sw, "");
}
hmsw.Flush();
StreamReader hmsr = new StreamReader(hmsw);
hmsr.BaseStream.Seek(0, SeekOrigin.Begin);
string hs = hmsr.ReadLine();
while (hs != null)
{
HexFile.writeStr(sw, hs);
hs = hmsr.ReadLine();
}
sw.Close();
if (oci != null)
{
foreach (string s in external_defines)
{
HexFile.writeStr(oci, s);
}
HexFile.writeStr(oci, "");
cmsw.Flush();
StreamReader cmsr = new StreamReader(cmsw);
cmsr.BaseStream.Seek(0, SeekOrigin.Begin);
string cs = cmsr.ReadLine();
while (cs != null)
{
HexFile.writeStr(oci, cs);
cs = cmsr.ReadLine();
}
oci.Close();
}
}
private static void EmitType(TypeSpec tdr, Stream hmsw, Stream cmsw,
List <string> advance_defines, List <string> external_defines, List <string> header_funcs, Target ass)
{
//Layout l = Layout.GetTypeInfoLayout(new Assembler.TypeToCompile { _ass = ass, tsig = new Signature.Param(tdr, ass), type = tdr }, ass, false);
//Layout l = tdr.GetLayout(new Signature.Param(new Token(tdr), ass).Type, ass, null);
var tname = tdr.m.GetStringEntry(MetadataStream.tid_TypeDef,
tdr.tdrow, 1);
var tns = tdr.m.GetStringEntry(MetadataStream.tid_TypeDef,
tdr.tdrow, 2);
int next_rsvd = 0;
int align = libtysila5.layout.Layout.GetTypeAlignment(tdr, ass, false);
if (!tdr.IsEnum)
{
HexFile.writeStr(hmsw, "struct " + tns + "_" + tname + " {");
advance_defines.Add("struct " + tns + "_" + tname + ";");
List <TypeSpec> fields = new List <TypeSpec>();
List <string> fnames = new List <string>();
libtysila5.layout.Layout.GetFieldOffset(tdr, null, ass, out var is_tls, false,
fields, fnames);
for (int i = 0; i < fields.Count; i++)
{
int bytesize;
HexFile.writeStr(hmsw, " " + ass.GetCType(fields[i], out bytesize) + " " + fnames[i] + ";");
// Pad out to align size
bytesize = align - bytesize;
while ((bytesize % 2) != 0)
{
HexFile.writeStr(hmsw, " uint8_t __reserved" + (next_rsvd++).ToString() + ";");
bytesize--;
}
while ((bytesize % 4) != 0)
{
HexFile.writeStr(hmsw, " uint16_t __reserved" + (next_rsvd++).ToString() + ";");
bytesize -= 2;
}
while (bytesize != 0)
{
HexFile.writeStr(hmsw, " uint32_t __reserved" + (next_rsvd++).ToString() + ";");
bytesize -= 4;
}
}
//if (packed_structs)
// HexFile.writeStr(hmsw, "} __attribute__((__packed__));");
//else
HexFile.writeStr(hmsw, "};");
}
else
{
// Identify underlying type
var utype = tdr.UnderlyingType;
bool needs_comma = false;
HexFile.writeStr(hmsw, "enum " + tns + "_" + tname + " {");
var first_fdef = tdr.m.GetIntEntry(MetadataStream.tid_TypeDef,
tdr.tdrow, 4);
var last_fdef = tdr.m.GetLastFieldDef(tdr.tdrow);
for (uint fdef_row = first_fdef; fdef_row < last_fdef; fdef_row++)
{
// Ensure field is static
var flags = tdr.m.GetIntEntry(MetadataStream.tid_Field,
(int)fdef_row, 0);
if ((flags & 0x10) == 0x10)
{
for (int cridx = 1; cridx <= tdr.m.table_rows[MetadataStream.tid_Constant]; cridx++)
{
int crpar_tid, crpar_row;
tdr.m.GetCodedIndexEntry(MetadataStream.tid_Constant,
cridx, 1, tdr.m.HasConstant, out crpar_tid, out crpar_row);
if (crpar_tid == MetadataStream.tid_Field &&
crpar_row == fdef_row)
{
var value = (int)tdr.m.GetIntEntry(MetadataStream.tid_Constant,
cridx, 2);
if (tdr.m.SigReadUSCompressed(ref value) != 4)
{
throw new NotSupportedException("Constant value not int32");
}
var v = tdr.m.sh_blob.di.ReadInt(value);
var fname = tdr.m.GetStringEntry(MetadataStream.tid_Field,
(int)fdef_row, 1);
if (needs_comma)
{
HexFile.writeStr(hmsw, ",");
}
HexFile.writeStr(hmsw, " " + fname + " = " + v.ToString(), true);
needs_comma = true;
}
}
}
}
HexFile.writeStr(hmsw);
HexFile.writeStr(hmsw, "};");
}
HexFile.writeStr(hmsw);
//if (output_cinit != null)
//{
if (!tdr.IsValueType)
{
string init_func = "void Init_" + tns + "_" + tname + "(struct " +
tns + "_" + tname + " *obj)";
HexFile.writeStr(cmsw, init_func);
header_funcs.Add(init_func + ";");
HexFile.writeStr(cmsw, "{");
HexFile.writeStr(cmsw, " obj->__vtbl = Get_Symbol_Addr(\"" + tdr.MangleType() + "\");");
HexFile.writeStr(cmsw, " obj->__mutex_lock = 0;");
HexFile.writeStr(cmsw, "}");
HexFile.writeStr(cmsw);
if (tdr.Equals(tdr.m.SystemString))
{
EmitStringInit(tdr, hmsw, cmsw, advance_defines, external_defines, header_funcs, ass);
}
}
//}
}