public int GetStringAddress(string s, target.Target t)
{
if (str_addrs.ContainsKey(s))
{
return(str_addrs[s]);
}
else
{
var ptr_size = t.GetCTSize(ir.Opcode.ct_object);
while (str_tab.Count % ptr_size != 0)
{
str_tab.Add(0);
}
int ret = str_tab.Count;
str_addrs.Add(s, ret);
//int string_obj_len = layout.Layout.GetTypeSize(StringObject,
// t, false);
//int string_type_offset =
int i = 0;
for (; i < length_offset; i++)
{
str_tab.Add(0);
}
int len = s.Length;
str_tab.Add((byte)(len & 0xff));
str_tab.Add((byte)((len >> 8) & 0xff));
str_tab.Add((byte)((len >> 16) & 0xff));
str_tab.Add((byte)((len >> 24) & 0xff));
i += 4;
for (; i < string_obj_len; i++)
{
str_tab.Add(0);
}
foreach (char c in s)
{
str_tab.Add((byte)(c & 0xff));
str_tab.Add((byte)((c >> 8) & 0xff));
}
// null-terminate and align up to ensure coreclr String.EqualsHelper works
str_tab.Add(0);
str_tab.Add(0);
while ((str_tab.Count % t.GetPointerSize()) != 0)
{
str_tab.Add(0);
}
return(ret);
}
}
public void WriteToOutput(binary_library.IBinaryFile of,
metadata.MetadataStream ms, target.Target t,
binary_library.ISection rd = null)
{
if (str_tab.Count == 0)
{
return;
}
if (rd == null)
{
rd = of.GetRDataSection();
}
rd.Align(t.GetCTSize(ir.Opcode.ct_object));
var stab_lab = of.CreateSymbol();
stab_lab.Name = Label;
stab_lab.ObjectType = binary_library.SymbolObjectType.Object;
stab_lab.Offset = (ulong)rd.Data.Count;
stab_lab.Type = binary_library.SymbolType.Weak;
rd.AddSymbol(stab_lab);
int stab_base = rd.Data.Count;
foreach (byte b in str_tab)
{
rd.Data.Add(b);
}
foreach (var kvp in sig_metadata_addrs)
{
var reloc = of.CreateRelocation();
reloc.DefinedIn = rd;
reloc.Type = t.GetDataToDataReloc();
reloc.Addend = 0;
if (sig_metadata_addends.ContainsKey(kvp.Key))
{
reloc.Addend = sig_metadata_addends[kvp.Key];
}
var md_lab = of.CreateSymbol();
md_lab.Name = kvp.Value;
md_lab.ObjectType = binary_library.SymbolObjectType.Object;
reloc.References = md_lab;
reloc.Offset = (ulong)(kvp.Key + stab_base);
of.AddRelocation(reloc);
}
stab_lab.Size = rd.Data.Count - (int)stab_lab.Offset;
}
private void AddFieldSpecFields(MethodSpec fs, List <byte> str_tab, target.Target t, TysilaState s)
{
/* Field specs have two special fields:
*
* IntPtr field_size
* IntPtr field_data
*
* where field_data may be null if no .data member is specified for the field
*/
// read field signature to get the type of the field
var sig_idx = fs.msig;
sig_idx = fs.m.GetFieldSigTypeIndex(sig_idx);
var ts = fs.m.GetTypeSpec(ref sig_idx, fs.gtparams, null);
var fsize = t.GetSize(ts);
str_tab.AddRange(t.IntPtrArray(BitConverter.GetBytes(fsize)));
// now determine if the field has an rva associated with it
int rva_id = 0;
for (int i = 1; i <= fs.m.table_rows[MetadataStream.tid_FieldRVA]; i++)
{
var field_idx = fs.m.GetIntEntry(MetadataStream.tid_FieldRVA, i, 1);
if (field_idx == fs.mdrow)
{
rva_id = i;
break;
}
}
// rva id
if (rva_id != 0)
{
// TODO checks in CIL II 22.18
var rva = fs.m.GetIntEntry(MetadataStream.tid_FieldRVA, rva_id, 0);
var offset = fs.m.ResolveRVA(rva);
sig_metadata_addrs[str_tab.Count] = fs.m.AssemblyName;
sig_metadata_addends[str_tab.Count] = offset;
}
for (int i = 0; i < t.psize; i++)
{
str_tab.Add(0);
}
}
public StringTable(string mod_name, metadata.AssemblyLoader al,
target.Target t)
{
Label = mod_name + "_StringTable";
var corlib = al.GetAssembly("mscorlib");
StringObject = corlib.GetTypeSpec("System", "String");
var fs_len = corlib.GetFieldDefRow("m_stringLength", StringObject);
length_offset = layout.Layout.GetFieldOffset(StringObject, fs_len,
t, out var is_tls);
var fs_start = corlib.GetFieldDefRow("m_firstChar", StringObject);
string_obj_len = layout.Layout.GetFieldOffset(StringObject, fs_start,
t, out is_tls);
}
public int GetSignatureAddress(metadata.TypeSpec.FullySpecSignature sig, target.Target t, TysilaState s)
{
var ptr_size = t.GetCTSize(ir.Opcode.ct_object);
while (str_tab.Count % ptr_size != 0)
{
str_tab.Add(0);
}
int ret = str_tab.Count;
// first is type of signature
str_tab.AddRange(t.IntPtrArray(BitConverter.GetBytes((int)sig.Type)));
// then any extra data if necessary
switch (sig.Type)
{
case metadata.Spec.FullySpecSignature.FSSType.Field:
// For fields with static data we insert it here
AddFieldSpecFields(sig.OriginalSpec as MethodSpec, str_tab, t, s);
break;
case Spec.FullySpecSignature.FSSType.Type:
AddTypeSpecFields(sig.OriginalSpec as TypeSpec, str_tab, t, s);
break;
}
// then is length of module references
str_tab.AddRange(t.IntPtrArray(BitConverter.GetBytes(sig.Modules.Count)));
// then module references
foreach (var mod in sig.Modules)
{
sig_metadata_addrs[str_tab.Count] = mod.AssemblyName;
for (int i = 0; i < ptr_size; i++)
{
str_tab.Add(0);
}
}
// then signature
str_tab.AddRange(sig.Signature);
return(ret);
}
public int GetSignatureAddress(IEnumerable <byte> sig, target.Target t, TysilaState s)
{
var ptr_size = t.GetCTSize(ir.Opcode.ct_object);
while (str_tab.Count % ptr_size != 0)
{
str_tab.Add(0);
}
int ret = str_tab.Count;
foreach (byte b in sig)
{
str_tab.Add(b);
}
return(ret);
}
public void WriteToOutput(binary_library.IBinaryFile of,
metadata.MetadataStream ms, target.Target t)
{
var rd = of.GetRDataSection();
rd.Align(t.GetCTSize(ir.Opcode.ct_object));
var stab_lab = GetStringTableSymbol(of);
stab_lab.Name = Label;
stab_lab.ObjectType = binary_library.SymbolObjectType.Object;
stab_lab.Offset = (ulong)rd.Data.Count;
stab_lab.Type = binary_library.SymbolType.Global;
rd.AddSymbol(stab_lab);
int stab_base = rd.Data.Count;
foreach (byte b in str_tab)
{
rd.Data.Add(b);
}
var str_lab = of.CreateSymbol();
str_lab.Name = StringObject.m.MangleType(StringObject);
str_lab.ObjectType = binary_library.SymbolObjectType.Object;
foreach (var str_addr in str_addrs.Values)
{
var reloc = of.CreateRelocation();
reloc.DefinedIn = rd;
reloc.Type = t.GetDataToDataReloc();
reloc.Addend = 0;
reloc.References = str_lab;
reloc.Offset = (ulong)(str_addr + stab_base);
of.AddRelocation(reloc);
}
stab_lab.Size = rd.Data.Count - (int)stab_lab.Offset;
}
public static bool AssembleBoxedMethod(metadata.MethodSpec ms,
binary_library.IBinaryFile bf, target.Target t,
TysilaState s,
StringBuilder debug_passes = null,
binary_library.ISection ts = null)
{
if (ts == null)
{
ts = bf.GetTextSection();
}
s.bf = bf;
s.text_section = ts;
// Symbol
List <binary_library.ISymbol> meth_syms = new List <binary_library.ISymbol>();
var mangled_name = ms.MangleMethod();
var meth_sym = bf.CreateSymbol();
meth_sym.Name = mangled_name;
meth_sym.ObjectType = binary_library.SymbolObjectType.Function;
meth_sym.Offset = (ulong)ts.Data.Count;
meth_sym.Type = binary_library.SymbolType.Weak;
ts.AddSymbol(meth_sym);
meth_syms.Add(meth_sym);
Code c = ms.ret_type_needs_boxing ? t.AssembleBoxRetTypeMethod(ms, s) : t.AssembleBoxedMethod(ms, s);
c.t = t;
t.AssemblePass(c);
foreach (var sym in meth_syms)
{
sym.Size = ts.Data.Count - (int)sym.Offset;
}
DumpDebug(debug_passes, meth_syms, c);
return(true);
}
public static bool AssembleMethod(metadata.MethodSpec ms,
binary_library.IBinaryFile bf, target.Target t,
TysilaState s,
StringBuilder debug_passes = null,
MetadataStream base_m = null,
Code code_override = null,
binary_library.ISection ts = null,
binary_library.ISection data_sect = null,
dwarf.DwarfCU dcu = null)
{
if (ms.ret_type_needs_boxing)
{
throw new Exception("AssembleMethod called for box rettype stub - use AssembleBoxedMethod instead");
}
if (ms.is_boxed)
{
throw new Exception("AssembleMethod called for boxed method - use AssembleBoxedMethod instead");
}
if (ts == null)
{
ts = bf.GetTextSection();
}
s.bf = bf;
s.text_section = ts;
binary_library.SymbolType sym_st = binary_library.SymbolType.Global;
var csite = ms.msig;
var mdef = ms.mdrow;
var m = ms.m;
/* Don't compile if not for this architecture */
if (!t.IsMethodValid(ms))
{
return(false);
}
// Get method RVA, don't compile if no body
var rva = m.GetIntEntry(metadata.MetadataStream.tid_MethodDef,
mdef, 0);
// New signature table
s.sigt = new SignatureTable(ms.MangleMethod());
/* Is this an array method? */
if (rva == 0 &&
ms.type != null &&
ms.type.stype == TypeSpec.SpecialType.Array &&
code_override == null)
{
if (ms.name_override == "Get")
{
code_override = ir.ConvertToIR.CreateArrayGet(ms, t, s);
}
else if (ms.name_override == ".ctor")
{
// there are two constructors, choose the correct one
var pcount = ms.m.GetMethodDefSigParamCount(ms.msig);
if (pcount == ms.type.arr_rank)
{
code_override = ir.ConvertToIR.CreateArrayCtor1(ms, t, s);
}
else if (pcount == 2 * ms.type.arr_rank)
{
code_override = ir.ConvertToIR.CreateArrayCtor2(ms, t, s);
}
else
{
throw new NotSupportedException("Invalid number of parameters to " + ms.MangleMethod() + " for array of rank " + ms.type.arr_rank.ToString());
}
}
else if (ms.name_override == "Set")
{
code_override = ir.ConvertToIR.CreateArraySet(ms, t, s);
}
else if (ms.name_override == "Address")
{
code_override = ir.ConvertToIR.CreateArrayAddress(ms, t, s);
}
else
{
throw new NotImplementedException(ms.name_override);
}
sym_st = binary_library.SymbolType.Weak;
}
/* Is this a vector method? */
if (rva == 0 &&
ms.type != null &&
ms.type.stype == TypeSpec.SpecialType.SzArray &&
code_override == null)
{
if (ms.Name == "IndexOf")
{
code_override = ir.ConvertToIR.CreateVectorIndexOf(ms, t, s);
}
else if (ms.Name == "Insert")
{
code_override = ir.ConvertToIR.CreateVectorInsert(ms, t, s);
}
else if (ms.Name == "RemoveAt")
{
code_override = ir.ConvertToIR.CreateVectorRemoveAt(ms, t, s);
}
else if (ms.Name == "get_Item")
{
code_override = ir.ConvertToIR.CreateVectorget_Item(ms, t, s);
}
else if (ms.Name == "set_Item")
{
code_override = ir.ConvertToIR.CreateVectorset_Item(ms, t, s);
}
else if (ms.Name == "get_Count")
{
code_override = ir.ConvertToIR.CreateVectorget_Count(ms, t, s);
}
else if (ms.Name == "CopyTo")
{
code_override = ir.ConvertToIR.CreateVectorCopyTo(ms, t, s);
}
/*else if (ms.Name == "GetEnumerator")
* code_override = ir.ConvertToIR.CreateVectorGetEnumerator(ms, t);*/
else if (ms.Name == "Add" ||
ms.Name == "Clear" ||
ms.Name == "Contains" ||
ms.Name == "Remove" ||
ms.Name == "get_IsReadOnly" ||
ms.Name == "get_IsSynchronized" ||
ms.Name == "get_SyncRoot" ||
ms.Name == "get_IsFixedSize" ||
ms.Name == "Clone" ||
ms.Name == "CompareTo" ||
ms.Name == "GetHashCode" ||
ms.Name == "Equals")
{
code_override = ir.ConvertToIR.CreateVectorUnimplemented(ms, t, s);
}
else
{
return(false);
}
sym_st = binary_library.SymbolType.Weak;
}
if (rva == 0 && code_override == null)
{
return(false);
}
// Get mangled name for defining a symbol
List <binary_library.ISymbol> meth_syms = new List <binary_library.ISymbol>();
var mangled_name = m.MangleMethod(ms);
var meth_sym = bf.CreateSymbol();
meth_sym.Name = mangled_name;
meth_sym.ObjectType = binary_library.SymbolObjectType.Function;
meth_sym.Offset = (ulong)ts.Data.Count;
meth_sym.Type = binary_library.SymbolType.Global;
ts.AddSymbol(meth_sym);
meth_syms.Add(meth_sym);
foreach (var alias in ms.MethodAliases)
{
var alias_sym = bf.CreateSymbol();
alias_sym.Name = alias;
alias_sym.ObjectType = binary_library.SymbolObjectType.Function;
alias_sym.Offset = (ulong)ts.Data.Count;
alias_sym.Type = binary_library.SymbolType.Global;
ts.AddSymbol(alias_sym);
meth_syms.Add(alias_sym);
}
if (ms.HasCustomAttribute("_ZN14libsupcs#2Edll8libsupcs20WeakLinkageAttribute_7#2Ector_Rv_P1u1t"))
{
sym_st = binary_library.SymbolType.Weak;
}
if (base_m != null && ms.m != base_m)
{
sym_st = binary_library.SymbolType.Weak;
}
foreach (var sym in meth_syms)
{
sym.Type = sym_st;
}
// Get signature if not specified
if (csite == 0)
{
csite = (int)m.GetIntEntry(metadata.MetadataStream.tid_MethodDef,
mdef, 4);
}
Code cil;
if (code_override == null)
{
var meth = m.GetRVA(rva);
var flags = meth.ReadByte(0);
int max_stack = 0;
long code_size = 0;
long lvar_sig_tok = 0;
int boffset = 0;
List <metadata.ExceptionHeader> ehdrs = null;
bool has_exceptions = false;
if ((flags & 0x3) == 0x2)
{
// Tiny header
code_size = flags >> 2;
max_stack = 8;
boffset = 1;
}
else if ((flags & 0x3) == 0x3)
{
// Fat header
uint fat_flags = meth.ReadUShort(0) & 0xfffU;
int fat_hdr_len = (meth.ReadUShort(0) >> 12) * 4;
max_stack = meth.ReadUShort(2);
code_size = meth.ReadUInt(4);
lvar_sig_tok = meth.ReadUInt(8);
boffset = fat_hdr_len;
if ((flags & 0x8) == 0x8)
{
has_exceptions = true;
ehdrs = new List <metadata.ExceptionHeader>();
int ehdr_offset = boffset + (int)code_size;
ehdr_offset = util.util.align(ehdr_offset, 4);
while (true)
{
int kind = meth.ReadByte(ehdr_offset);
if ((kind & 0x1) != 0x1)
{
throw new Exception("Invalid exception header");
}
bool is_fat = false;
if ((kind & 0x40) == 0x40)
{
is_fat = true;
}
int data_size = meth.ReadInt(ehdr_offset);
data_size >>= 8;
if (is_fat)
{
data_size &= 0xffffff;
}
else
{
data_size &= 0xff;
}
int clause_count;
if (is_fat)
{
clause_count = (data_size - 4) / 24;
}
else
{
clause_count = (data_size - 4) / 12;
}
ehdr_offset += 4;
for (int i = 0; i < clause_count; i++)
{
var ehdr = ParseExceptionHeader(meth,
ref ehdr_offset, is_fat, ms);
ehdr.EhdrIdx = i;
ehdrs.Add(ehdr);
}
if ((kind & 0x80) != 0x80)
{
break;
}
}
}
}
else
{
throw new Exception("Invalid method header flags");
}
/* Parse CIL code */
cil = libtysila5.cil.CilParser.ParseCIL(meth,
ms, boffset, (int)code_size, lvar_sig_tok,
has_exceptions, ehdrs);
cil.s = s;
/* Allocate local vars and args */
t.AllocateLocalVarsArgs(cil);
/* Convert to IR */
cil.t = t;
ir.ConvertToIR.DoConversion(cil);
}
else
{
cil = code_override;
}
/* Allocate registers */
ir.AllocRegs.DoAllocation(cil);
/* Choose instructions */
target.ChooseInstructions.DoChoosing(cil);
t.AssemblePass(cil);
//((target.x86.x86_Assembler)cil.t).AssemblePass(cil);
foreach (var sym in meth_syms)
{
sym.Size = ts.Data.Count - (int)sym.Offset;
}
foreach (var extra_sym in cil.extra_labels)
{
var esym = bf.CreateSymbol();
esym.Name = extra_sym.Name;
esym.ObjectType = binary_library.SymbolObjectType.Function;
esym.Offset = (ulong)extra_sym.Offset;
esym.Type = sym_st;
ts.AddSymbol(esym);
}
/* Dump debug */
DumpDebug(debug_passes, meth_syms, cil);
/* Signature table */
if (data_sect == null)
{
data_sect = bf.GetDataSection();
}
s.sigt.WriteToOutput(bf, ms.m, t, data_sect);
/* DWARF output */
if (dcu != null)
{
var ddie = dcu.GetMethodDie(ms);
ddie.sym = meth_syms[0];
ddie.cil = cil;
var ddts = dcu.GetTypeDie(ms.type) as dwarf.DwarfParentDIE;
ddts.Children.Add(ddie);
if (ms.ReturnType != null)
{
dcu.GetTypeDie(ms.ReturnType);
if (ms.ReturnType.stype == TypeSpec.SpecialType.None && !ms.ReturnType.IsValueType)
{
dcu.GetTypeDie(ms.ReturnType.Pointer);
}
}
foreach (var la in cil.la_types)
{
dcu.GetTypeDie(la);
if (la.stype == TypeSpec.SpecialType.None && !la.IsValueType)
{
dcu.GetTypeDie(la.Pointer);
}
}
foreach (var lv in cil.lv_types)
{
dcu.GetTypeDie(lv);
if (lv.stype == TypeSpec.SpecialType.None && !lv.IsValueType)
{
dcu.GetTypeDie(lv.Pointer);
}
}
if (!ms.IsStatic)
{
dcu.GetTypeDie(ms.type.Pointer);
}
// do we have source lines?
if (ms.m.pdb != null && ms.mdrow > 0)
{
var sps = ms.m.pdb.DebugGetSeqPtForMDRow(ms.mdrow);
if (sps != null && cil.cil != null && cil.cil.Count > 0)
{
/* Start building a Line Number Program
*
* We follow the example in DWARF4 D.5 (p251), with a few changes
*
* header - defined per CU
* - add this/these source files to it if necessary
*
* DW_LNE_set_address - psize 0s, reloc to mangled name
* DW_LNS_advance_pc - mc_offset of first cil instruction
* DW_LNS_set_prologue_end
* DW_LNS_set_file - source file
* SPECIAL(0,0) - add first opcode
* SPECIAL(x,y) - add rest of opcodes
* DW_LNE_end_sequence
*
*/
string cur_file = null;
int cur_line = 1;
int cur_mc = 0;
int cur_col = 0;
var lnp = dcu.lnp;
// DW_LNE_set_address
lnp.AddRange(new byte[] { 0x00, (byte)(t.psize + 1), 0x02 });
dcu.lnp_relocs.Add(lnp.Count, meth_syms[0]);
for (int i = 0; i < t.psize; i++)
{
lnp.Add(0);
}
// DW_LNS_advance_pc
lnp.Add(0x02);
dwarf.DwarfDIE.w(lnp, (uint)cil.cil[0].mc_offset);
cur_mc = cil.cil[0].mc_offset;
// DW_LNS_set_prologue_end
lnp.Add(0x0a);
foreach (var cn in cil.cil)
{
var mc_advance = cn.mc_offset - cur_mc;
// get current line number
MetadataStream.SeqPt csp = null;
foreach (var sp in sps)
{
if (sp.IlOffset == cn.il_offset &
!sp.IsHidden)
{
csp = sp;
break;
}
}
if (csp != null)
{
var line_advance = csp.StartLine - cur_line;
if (ddie.StartLine == 0)
{
ddie.StartLine = csp.StartLine;
}
if (ddie.StartColumn == 0)
{
ddie.StartColumn = csp.StartCol;
}
if (csp.DocName != cur_file)
{
// DW_LNS_set_file
lnp.Add(0x04);
uint file_no;
if (!dcu.lnp_files.TryGetValue(csp.DocName, out file_no))
{
file_no = (uint)(dcu.lnp_files.Count + 1);
dcu.lnp_files[csp.DocName] = file_no;
dcu.lnp_fnames.Add(csp.DocName);
}
if (ddie.SourceFileId == 0)
{
ddie.SourceFileId = (int)file_no;
}
dwarf.DwarfDIE.w(lnp, file_no);
cur_file = csp.DocName;
}
if (csp.StartCol != cur_col)
{
// DW_LNS_set_column
lnp.Add(0x05);
dwarf.DwarfDIE.w(lnp, (uint)csp.StartCol);
cur_col = csp.StartCol;
}
/* SPECIAL if possible
* Use example on DWARF4 p132:
* opcode_base = 13, line_base = -3, line_range = 12
*
* Gives a line advance range of [-3,8] and op_advance [0,19]
*/
if ((line_advance >= dcu.line_base && line_advance < (dcu.line_base + dcu.line_range)) &&
(mc_advance >= 0 && mc_advance < dcu.mc_advance_max))
{
var spec_opcode = (line_advance - dcu.line_base) +
(dcu.line_range * mc_advance) + dcu.opcode_base;
lnp.Add((byte)spec_opcode);
}
else
{
// DW_LNS_advance_pc
lnp.Add(0x02);
dwarf.DwarfDIE.w(lnp, (uint)mc_advance);
// DW_LNS_advance_line
lnp.Add(0x03);
dwarf.DwarfDIE.w(lnp, line_advance);
// SPECIAL(0,0)
var spec_opcode = (0 - dcu.line_base) + dcu.opcode_base;
lnp.Add((byte)spec_opcode);
}
cur_line += line_advance;
cur_mc += mc_advance;
}
}
// Advance to end
var to_advance = (int)meth_syms[0].Size - cur_mc;
lnp.Add(0x02);
dwarf.DwarfDIE.w(lnp, to_advance);
// DW_LNE_end_sequence
lnp.Add(0x00);
lnp.Add(0x01);
lnp.Add(0x01);
}
}
}
return(true);
}
