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|
// Convert DMD CodeView/DWARF debug information to PDB files
// Copyright (c) 2009-2012 by Rainer Schuetze, All Rights Reserved
//
// License for redistribution is given by the Artistic License 2.0
// see file LICENSE for further details
//
// todo:
// display associative array
// 64 bit:
// - arguments passed by register
// - real
#include "cv2pdb.h"
#include "PEImage.h"
#include "symutil.h"
#include "cvutil.h"
#include "dwarf.h"
#include <assert.h>
#include <string>
#include <vector>
///////////////////////////////////////////////////////////////////////////////
unsigned int LEB128(unsigned char* &p)
{
unsigned int x = 0;
int shift = 0;
while(*p & 0x80)
{
x |= (*p & 0x7f) << shift;
shift += 7;
p++;
}
x |= *p << shift;
p++;
return x;
}
unsigned int LEB128(unsigned char* base, int& off)
{
unsigned char* p = base + off;
unsigned int x = LEB128(p);
off = p - base;
return x;
}
int SLEB128(unsigned char* &p)
{
unsigned int x = 0;
int shift = 0;
while(*p & 0x80)
{
x |= (*p & 0x7f) << shift;
shift += 7;
p++;
}
x |= *p << shift;
if(*p & 0x40)
x |= -(1 << (shift + 7)); // sign extend
p++;
return x;
}
unsigned int RD2(unsigned char* p)
{
unsigned int x = *p++;
x |= *p++ << 8;
return x;
}
unsigned int RD4(unsigned char* p)
{
unsigned int x = *p++;
x |= *p++ << 8;
x |= *p++ << 16;
x |= *p++ << 24;
return x;
}
unsigned long long RD8(unsigned char* p)
{
unsigned long long x = *p++;
for(int shift = 8; shift < 64; shift += 8)
x |= (unsigned long long) *p++ << shift;
return x;
}
unsigned long long RDsize(unsigned char* p, int size)
{
if(size > 8)
size = 8;
unsigned long long x = *p++;
for(int shift = 8; shift < size * 8; shift += 8)
x |= (unsigned long long) *p++ << shift;
return x;
}
///////////////////////////////////////////////////////////////////////////////
#include "pshpack1.h"
struct DWARF_CompilationUnit
{
unsigned int unit_length; // 12 byte in DWARF-64
unsigned short version;
unsigned int debug_abbrev_offset; // 8 byte in DWARF-64
unsigned char address_size;
bool isDWARF64() const { return unit_length == ~0; }
int refSize() const { return unit_length == ~0 ? 8 : 4; }
};
struct DWARF_FileName
{
const char* file_name;
unsigned int dir_index;
unsigned long lastModification;
unsigned long fileLength;
void read(unsigned char* &p)
{
file_name = (const char*) p;
p += strlen((const char*) p) + 1;
dir_index = LEB128(p);
lastModification = LEB128(p);
fileLength = LEB128(p);
}
};
struct DWARF_InfoData
{
int entryOff;
int code;
int tag;
int hasChild;
const char* name;
const char* linkage_name;
const char* dir;
unsigned long byte_size;
unsigned long sibling;
unsigned long encoding;
unsigned long pclo;
unsigned long pchi;
unsigned long ranges;
unsigned long type;
unsigned long containing_type;
unsigned long specification;
unsigned long inlined;
unsigned long external;
unsigned long long location; // first 8 bytes
unsigned long long member_location; // first 8 bytes
unsigned long locationlist; // offset into debug_loc
long frame_base;
long upper_bound;
long lower_bound;
};
static const int maximum_operations_per_instruction = 1;
struct DWARF_LineNumberProgramHeader
{
unsigned int unit_length; // 12 byte in DWARF-64
unsigned short version;
unsigned int header_length; // 8 byte in DWARF-64
unsigned char minimum_instruction_length;
//unsigned char maximum_operations_per_instruction; (// not in DWARF 2
unsigned char default_is_stmt;
signed char line_base;
unsigned char line_range;
unsigned char opcode_base;
//LEB128 standard_opcode_lengths[opcode_base];
// string include_directories[] // zero byte terminated
// DWARF_FileNames file_names[] // zero byte terminated
};
struct DWARF_LineState
{
// hdr info
std::vector<const char*> include_dirs;
std::vector<DWARF_FileName> files;
unsigned long address;
unsigned int op_index;
unsigned int file;
unsigned int line;
unsigned int column;
bool is_stmt;
bool basic_block;
bool end_sequence;
bool prologue_end;
bool epilogue_end;
unsigned int isa;
unsigned int discriminator;
// not part of the "documented" state
DWARF_FileName* file_ptr;
unsigned long seg_offset;
unsigned long last_addr;
std::vector<mspdb::LineInfoEntry> lineInfo;
DWARF_LineState()
{
seg_offset = 0x400000;
init(0);
}
void init(DWARF_LineNumberProgramHeader* hdr)
{
address = 0;
op_index = 0;
file = 1;
line = 1;
column = 0;
is_stmt = hdr && hdr->default_is_stmt != 0;
basic_block = false;
end_sequence = false;
prologue_end = false;
epilogue_end = false;
isa = 0;
discriminator = 0;
}
void advance_addr(DWARF_LineNumberProgramHeader* hdr, int operation_advance)
{
int address_advance = hdr->minimum_instruction_length * ((op_index + operation_advance) / maximum_operations_per_instruction);
address += address_advance;
op_index = (op_index + operation_advance) % maximum_operations_per_instruction;
}
void addLineInfo()
{
#if 0
const char* fname = (file == 0 ? file_ptr->file_name : files[file - 1].file_name);
printf("Adr:%08x Line: %5d File: %s\n", address, line, fname);
#endif
if(address < seg_offset)
return;
mspdb::LineInfoEntry entry;
entry.offset = address - seg_offset;
entry.line = line;
lineInfo.push_back(entry);
}
};
#include "poppack.h"
///////////////////////////////////////////////////////////////////////////////
long decodeLocation(unsigned char* loc, bool push0, int &id, int& size)
{
unsigned char* p = loc;
long stack[8] = {0};
int stackDepth = push0 ? 1 : 0;
long data = 0;
id = push0 ? S_CONSTANT_V2 : -1;
do
{
int op = *p++;
if(op == 0)
break;
size = 0;
switch(op)
{
case DW_OP_addr: id = S_GDATA_V2; size = 4; stack[stackDepth++] = RD4(p); break;
case DW_OP_fbreg: id = S_BPREL_V2; stack[stackDepth++] = SLEB128(p); break;
case DW_OP_const1u: id = S_CONSTANT_V2; size = 1; stack[stackDepth++] = *p; break;
case DW_OP_const2u: id = S_CONSTANT_V2; size = 2; stack[stackDepth++] = RD2(p); break;
case DW_OP_const4u: id = S_CONSTANT_V2; size = 4; stack[stackDepth++] = RD4(p); break;
case DW_OP_const1s: id = S_CONSTANT_V2; size = 1; stack[stackDepth++] = (char)*p; break;
case DW_OP_const2s: id = S_CONSTANT_V2; size = 2; stack[stackDepth++] = (short)RD2(p); break;
case DW_OP_const4s: id = S_CONSTANT_V2; size = 4; stack[stackDepth++] = (int)RD4(p); break;
case DW_OP_constu: id = S_CONSTANT_V2; stack[stackDepth++] = LEB128(p); break;
case DW_OP_consts: id = S_CONSTANT_V2; stack[stackDepth++] = SLEB128(p); break;
case DW_OP_plus_uconst: stack[stackDepth-1] += LEB128(p); break;
case DW_OP_lit0: case DW_OP_lit1: case DW_OP_lit2: case DW_OP_lit3:
case DW_OP_lit4: case DW_OP_lit5: case DW_OP_lit6: case DW_OP_lit7:
case DW_OP_lit8: case DW_OP_lit9: case DW_OP_lit10: case DW_OP_lit11:
case DW_OP_lit12: case DW_OP_lit13: case DW_OP_lit14: case DW_OP_lit15:
case DW_OP_lit16: case DW_OP_lit17: case DW_OP_lit18: case DW_OP_lit19:
case DW_OP_lit20: case DW_OP_lit21: case DW_OP_lit22: case DW_OP_lit23:
case DW_OP_lit24: case DW_OP_lit25: case DW_OP_lit26: case DW_OP_lit27:
case DW_OP_lit28: case DW_OP_lit29: case DW_OP_lit30: case DW_OP_lit31:
id = S_CONSTANT_V2;
stack[stackDepth++] = op - DW_OP_lit0;
break;
case DW_OP_reg0: case DW_OP_reg1: case DW_OP_reg2: case DW_OP_reg3:
case DW_OP_reg4: case DW_OP_reg5: case DW_OP_reg6: case DW_OP_reg7:
case DW_OP_reg8: case DW_OP_reg9: case DW_OP_reg10: case DW_OP_reg11:
case DW_OP_reg12: case DW_OP_reg13: case DW_OP_reg14: case DW_OP_reg15:
case DW_OP_reg16: case DW_OP_reg17: case DW_OP_reg18: case DW_OP_reg19:
case DW_OP_reg20: case DW_OP_reg21: case DW_OP_reg22: case DW_OP_reg23:
case DW_OP_reg24: case DW_OP_reg25: case DW_OP_reg26: case DW_OP_reg27:
case DW_OP_reg28: case DW_OP_reg29: case DW_OP_reg30: case DW_OP_reg31:
id = S_REGISTER_V2;
break;
case DW_OP_regx:
id = S_REGISTER_V2;
data = LEB128(p); // reg
break;
case DW_OP_breg0: case DW_OP_breg1: case DW_OP_breg2: case DW_OP_breg3:
case DW_OP_breg4: case DW_OP_breg5: case DW_OP_breg6: case DW_OP_breg7:
case DW_OP_breg8: case DW_OP_breg9: case DW_OP_breg10: case DW_OP_breg11:
case DW_OP_breg12: case DW_OP_breg13: case DW_OP_breg14: case DW_OP_breg15:
case DW_OP_breg16: case DW_OP_breg17: case DW_OP_breg18: case DW_OP_breg19:
case DW_OP_breg20: case DW_OP_breg21: case DW_OP_breg22: case DW_OP_breg23:
case DW_OP_breg24: case DW_OP_breg25: case DW_OP_breg26: case DW_OP_breg27:
case DW_OP_breg28: case DW_OP_breg29: case DW_OP_breg30: case DW_OP_breg31:
id = S_REGISTER_V2;
data = SLEB128(p);
break;
case DW_OP_bregx:
id = S_REGISTER_V2;
data = LEB128(p); // reg
data = SLEB128(p);
break;
case DW_OP_deref: break;
case DW_OP_deref_size: size = 1; break;
case DW_OP_dup: stack[stackDepth] = stack[stackDepth-1]; stackDepth++; break;
case DW_OP_drop: stackDepth--; break;
case DW_OP_over: stack[stackDepth] = stack[stackDepth-2]; stackDepth++; break;
case DW_OP_pick: size = 1; stack[stackDepth++] = stack[*p]; break;
case DW_OP_swap: data = stack[stackDepth-1]; stack[stackDepth-1] = stack[stackDepth-2]; stack[stackDepth-2] = data; break;
case DW_OP_rot: data = stack[stackDepth-1]; stack[stackDepth-1] = stack[stackDepth-2]; stack[stackDepth-2] = stack[stackDepth-3]; stack[stackDepth-3] = data; break;
case DW_OP_xderef: stackDepth--; break;
case DW_OP_xderef_size: size = 1; stackDepth--; break;
case DW_OP_push_object_address: stackDepth++; break; /* DWARF3 */
case DW_OP_call2: size = 2; break;
case DW_OP_call4: size = 4; break;
case DW_OP_form_tls_address: break;
case DW_OP_call_frame_cfa: stackDepth++; break;
case DW_OP_call_ref:
case DW_OP_bit_piece:
case DW_OP_implicit_value: /* DWARF4 */
case DW_OP_stack_value:
//assert(!"unsupported expression operations");
id = -1;
return 0;
// unary operations pop and push
case DW_OP_abs: stack[stackDepth-1] = abs(stack[stackDepth-1]); break;
case DW_OP_neg: stack[stackDepth-1] = -stack[stackDepth-1]; break;
case DW_OP_not: stack[stackDepth-1] = ~stack[stackDepth-1]; break;
break;
// biary operations pop twice and push
case DW_OP_and: stack[stackDepth-2] = stack[stackDepth-2] & stack[stackDepth-1]; stackDepth--; break;
case DW_OP_div: stack[stackDepth-2] = stack[stackDepth-2] / stack[stackDepth-1]; stackDepth--; break;
case DW_OP_minus: stack[stackDepth-2] = stack[stackDepth-2] - stack[stackDepth-1]; stackDepth--; break;
case DW_OP_mod: stack[stackDepth-2] = stack[stackDepth-2] % stack[stackDepth-1]; stackDepth--; break;
case DW_OP_mul: stack[stackDepth-2] = stack[stackDepth-2] * stack[stackDepth-1]; stackDepth--; break;
case DW_OP_or: stack[stackDepth-2] = stack[stackDepth-2] | stack[stackDepth-1]; stackDepth--; break;
case DW_OP_plus: stack[stackDepth-2] = stack[stackDepth-2] + stack[stackDepth-1]; stackDepth--; break;
case DW_OP_shl: stack[stackDepth-2] = stack[stackDepth-2] << stack[stackDepth-1]; stackDepth--; break;
case DW_OP_shr: stack[stackDepth-2] = stack[stackDepth-2] >> stack[stackDepth-1]; stackDepth--; break;
case DW_OP_shra: stack[stackDepth-2] = stack[stackDepth-2] >> stack[stackDepth-1]; stackDepth--; break;
case DW_OP_xor: stack[stackDepth-2] = stack[stackDepth-2] ^ stack[stackDepth-1]; stackDepth--; break;
case DW_OP_eq: stack[stackDepth-2] = stack[stackDepth-2] == stack[stackDepth-1]; stackDepth--; break;
case DW_OP_ge: stack[stackDepth-2] = stack[stackDepth-2] >= stack[stackDepth-1]; stackDepth--; break;
case DW_OP_gt: stack[stackDepth-2] = stack[stackDepth-2] > stack[stackDepth-1]; stackDepth--; break;
case DW_OP_le: stack[stackDepth-2] = stack[stackDepth-2] <= stack[stackDepth-1]; stackDepth--; break;
case DW_OP_lt: stack[stackDepth-2] = stack[stackDepth-2] < stack[stackDepth-1]; stackDepth--; break;
case DW_OP_ne: stack[stackDepth-2] = stack[stackDepth-2] != stack[stackDepth-1]; stackDepth--; break;
case DW_OP_bra:
case DW_OP_skip:
size = RD2(p) + 2;
break;
}
p += size;
}
while(stackDepth > 0);
size = p - loc;
return stack[0];
}
long decodeLocation(unsigned long long loc, bool push0, int &id)
{
int size;
return decodeLocation((unsigned char*) &loc, push0, id, size);
}
unsigned char* CV2PDB::getDWARFAbbrev(int off, int findcode)
{
if(!img.debug_abbrev)
return 0;
unsigned char* p = (unsigned char*) img.debug_abbrev;
while(off < (int)img.debug_abbrev_length)
{
int code = LEB128(p, off);
if(code == findcode)
return p + off;
if(code == 0)
return 0;
int tag = LEB128(p, off);
int hasChild = p[off++];
// skip attributes
int attr, form;
do
{
attr = LEB128(p, off);
form = LEB128(p, off);
}
while(attr || form);
}
return 0;
}
bool CV2PDB::readDWARFInfoData(DWARF_InfoData& id, DWARF_CompilationUnit* cu, unsigned char* &p, bool mergeInfo)
{
int entryOff = p - (unsigned char*) cu;
int code = LEB128(p);
if(code == 0)
return false; // end of children list?
unsigned char* abbrev = getDWARFAbbrev(cu->debug_abbrev_offset, code);
assert(abbrev);
if(!abbrev)
return false;
int tag = LEB128(abbrev);
int hasChild = *abbrev++;
if(!mergeInfo)
{
id.entryOff = entryOff;
id.code = code;
id.tag = tag;
id.hasChild = hasChild;
id.name = 0;
id.linkage_name = 0;
id.dir = 0;
id.byte_size = 0;
id.sibling = 0;
id.encoding = 0;
id.pclo = 0;
id.pchi = 0;
id.ranges = 0;
id.type = 0;
id.containing_type = 0;
id.specification = 0;
id.inlined = 0;
id.external = 0;
id.member_location = 0;
id.location = 0;
id.locationlist = 0;
id.frame_base = -1;
id.upper_bound = 0;
id.lower_bound = 0;
}
int attr, form;
for( ; ; )
{
attr = LEB128(abbrev);
form = LEB128(abbrev);
if(attr == 0 && form == 0)
break;
const char* str = 0;
int size = 0;
unsigned long addr = 0;
unsigned long data = 0;
unsigned long long lldata = 0;
bool isRef = false;
switch(form)
{
case DW_FORM_addr: addr = *(unsigned long *)p; size = cu->address_size; break;
case DW_FORM_block2: size = RD2(p) + 2; break;
case DW_FORM_block4: size = RD4(p) + 4; break;
case DW_FORM_data2: size = 2; lldata = data = RD2(p); break;
case DW_FORM_data4: size = 4; lldata = data = RD4(p); break;
case DW_FORM_data8: size = 8; lldata = RD8(p); data = (unsigned long) lldata; break;
case DW_FORM_string: str = (const char*) p; size = strlen(str) + 1; break;
case DW_FORM_block: size = LEB128(p); lldata = RDsize(p, size); data = (unsigned long) lldata; break;
case DW_FORM_block1: size = *p++; lldata = RDsize(p, size); data = (unsigned long) lldata; break;
case DW_FORM_data1: size = 1; lldata = data = *p; break;
case DW_FORM_flag: size = 1; lldata = data = *p; break;
case DW_FORM_sdata: lldata = data = SLEB128(p); size = 0; break;
case DW_FORM_strp: size = cu->refSize(); str = (const char*) (img.debug_str + RDsize(p, size)); break;
case DW_FORM_udata: lldata = data = LEB128(p); size = 0; break;
case DW_FORM_ref_addr: size = cu->address_size; lldata = RDsize(p, size); data = (unsigned long) lldata; isRef = true; break;
case DW_FORM_ref1: size = 1; lldata = data = *p; isRef = true; break;
case DW_FORM_ref2: size = 2; lldata = data = RD2(p); isRef = true; break;
case DW_FORM_ref4: size = 4; lldata = data = RD4(p); isRef = true; break;
case DW_FORM_ref8: size = 8; lldata = RD8(p); data = (unsigned long) lldata; isRef = true; break;
case DW_FORM_ref_udata: lldata = data = LEB128(p); size = 0; isRef = true; break;
case DW_FORM_exprloc: size = LEB128(p); break;
case DW_FORM_flag_present: size = 1; break;
case DW_FORM_ref_sig8: size = 8; break;
case DW_FORM_indirect:
case DW_FORM_sec_offset:
default: return setError("unknown DWARF form entry");
}
switch(attr)
{
case DW_AT_byte_size: id.byte_size = data; break;
case DW_AT_sibling: id.sibling = data; break;
case DW_AT_encoding: id.encoding = data; break;
case DW_AT_name: id.name = str; break;
case DW_AT_MIPS_linkage_name: id.linkage_name = str; break;
case DW_AT_comp_dir: id.dir = str; break;
case DW_AT_low_pc: id.pclo = addr; break;
case DW_AT_high_pc: id.pchi = addr; break;
case DW_AT_ranges: id.ranges = data; break;
case DW_AT_type: id.type = data; break;
case DW_AT_inline: id.inlined = data; break;
case DW_AT_external: id.external = data; break;
case DW_AT_upper_bound: id.upper_bound = data; break;
case DW_AT_lower_bound: id.lower_bound = data; break;
case DW_AT_containing_type: id.containing_type = data; break;
case DW_AT_specification: id.specification = data; break;
case DW_AT_data_member_location: id.member_location = lldata; break;
case DW_AT_location:
if(form == DW_FORM_block1)
id.location = lldata;
else
id.locationlist = data;
break;
case DW_AT_frame_base:
if(form != DW_FORM_block2 && form != DW_FORM_block4 && form != DW_FORM_block1 && form != DW_FORM_block)
id.frame_base = data;
break;
}
p += size;
}
return true;
}
void CV2PDB::checkDWARFTypeAlloc(int size, int add)
{
if (cbDwarfTypes + size > allocDwarfTypes)
{
allocDwarfTypes += size + add;
dwarfTypes = (BYTE*) realloc(dwarfTypes, allocDwarfTypes);
}
}
void CV2PDB::appendStackVar(const char* name, int type, int offset)
{
unsigned int len;
unsigned int align = 4;
// if(type > 0x1020)
// type = 0x74;
checkUdtSymbolAlloc(100 + kMaxNameLen);
codeview_symbol*cvs = (codeview_symbol*) (udtSymbols + cbUdtSymbols);
cvs->stack_v2.offset = offset;
cvs->stack_v2.symtype = type;
if(img.isX64())
{
cvs->stack_xxxx_v3.id = S_BPREL_XXXX_V3;
// register as in "Microsoft Symbol and Type Information" 6.1, see also dia2dump/regs.cpp
cvs->stack_xxxx_v3.unknown = 0x14e; // 0x14f: esp relative, 0x14e: ebp relative
len = cstrcpy_v (true, (BYTE*) cvs->stack_xxxx_v3.name, name);
len += (BYTE*) &cvs->stack_xxxx_v3.name - (BYTE*) cvs;
}
else
{
cvs->stack_v2.id = v3 ? S_BPREL_V3 : S_BPREL_V2;
len = cstrcpy_v (v3, (BYTE*) &cvs->stack_v2.p_name, name);
len += (BYTE*) &cvs->stack_v2.p_name - (BYTE*) cvs;
}
for (; len & (align-1); len++)
udtSymbols[cbUdtSymbols + len] = 0xf4 - (len & 3);
cvs->stack_v2.len = len - 2;
cbUdtSymbols += len;
}
void CV2PDB::appendGlobalVar(const char* name, int type, int seg, int offset)
{
unsigned int len;
unsigned int align = 4;
for(char* cname = (char*) name; *cname; cname++)
if (*cname == '.')
*cname = dotReplacementChar;
checkUdtSymbolAlloc(100 + kMaxNameLen);
codeview_symbol*cvs = (codeview_symbol*) (udtSymbols + cbUdtSymbols);
cvs->data_v2.id = v3 ? S_GDATA_V3 : S_GDATA_V2;
cvs->data_v2.offset = offset;
cvs->data_v2.symtype = type;
cvs->data_v2.segment = seg;
len = cstrcpy_v (v3, (BYTE*) &cvs->data_v2.p_name, name);
len += (BYTE*) &cvs->data_v2.p_name - (BYTE*) cvs;
for (; len & (align-1); len++)
udtSymbols[cbUdtSymbols + len] = 0xf4 - (len & 3);
cvs->data_v2.len = len - 2;
cbUdtSymbols += len;
}
bool CV2PDB::appendEndArg()
{
checkUdtSymbolAlloc(8);
codeview_symbol*cvs = (codeview_symbol*) (udtSymbols + cbUdtSymbols);
cvs->common.id = S_ENDARG_V1;
cvs->common.len = 2;
cbUdtSymbols += 4;
return true;
}
void CV2PDB::appendEnd()
{
checkUdtSymbolAlloc(8);
codeview_symbol*cvs = (codeview_symbol*) (udtSymbols + cbUdtSymbols);
cvs->common.id = S_END_V1;
cvs->common.len = 2;
cbUdtSymbols += 4;
}
void CV2PDB::appendLexicalBlock(DWARF_InfoData& id, unsigned int proclo)
{
checkUdtSymbolAlloc(32);
codeview_symbol*dsym = (codeview_symbol*) (udtSymbols + cbUdtSymbols);
dsym->block_v3.id = S_BLOCK_V3;
dsym->block_v3.parent = 0;
dsym->block_v3.end = 0; // destSize + sizeof(dsym->block_v3) + 12;
dsym->block_v3.length = id.pchi - id.pclo;
dsym->block_v3.offset = id.pclo - codeSegOff;
dsym->block_v3.segment = img.codeSegment + 1;
dsym->block_v3.name[0] = 0;
int len = sizeof(dsym->block_v3);
for (; len & 3; len++)
udtSymbols[cbUdtSymbols + len] = 0xf4 - (len & 3);
dsym->block_v3.len = len - 2;
cbUdtSymbols += len;
}
bool CV2PDB::addDWARFProc(DWARF_InfoData& procid, DWARF_CompilationUnit* cu,
unsigned char* &locals, unsigned char* end)
{
unsigned int pclo = procid.pclo - codeSegOff;
unsigned int pchi = procid.pchi - codeSegOff;
int length = procid.hasChild ? end - locals : 0;
unsigned int len;
unsigned int align = 4;
checkUdtSymbolAlloc(100 + kMaxNameLen);
// GLOBALPROC
codeview_symbol*cvs = (codeview_symbol*) (udtSymbols + cbUdtSymbols);
cvs->proc_v2.id = v3 ? S_GPROC_V3 : S_GPROC_V2;
cvs->proc_v2.pparent = 0;
cvs->proc_v2.pend = 0;
cvs->proc_v2.next = 0;
cvs->proc_v2.proc_len = pchi - pclo;
cvs->proc_v2.debug_start = pclo - pclo;
cvs->proc_v2.debug_end = pchi - pclo;
cvs->proc_v2.offset = pclo;
cvs->proc_v2.segment = img.codeSegment + 1;
cvs->proc_v2.proctype = 0; // translateType(sym->proc_v1.proctype);
cvs->proc_v2.flags = 0;
// printf("GlobalPROC %s\n", procid.name);
len = cstrcpy_v (v3, (BYTE*) &cvs->proc_v2.p_name, procid.name);
len += (BYTE*) &cvs->proc_v2.p_name - (BYTE*) cvs;
for (; len & (align-1); len++)
udtSymbols[cbUdtSymbols + len] = 0xf4 - (len & 3);
cvs->proc_v2.len = len - 2;
cbUdtSymbols += len;
#if 0
addStackVar("local_var", 0x1001, 8);
#endif
int frameOff = 8; // assume ebp+8 in fb
if(img.debug_loc && procid.frame_base >= 0)
{
unsigned char* loc = (unsigned char*) (img.debug_loc + procid.frame_base);
int frame_breg = cu->address_size == 8 ? DW_OP_breg6 : DW_OP_breg5;
#if 1
while(RDsize(loc, cu->address_size) != 0 || RDsize(loc + cu->address_size, cu->address_size) != 0)
{
loc += 2*cu->address_size;
int opsize = RD2(loc);
loc += 2;
if(*loc == frame_breg)
{
unsigned char* p = loc + 1;
frameOff = SLEB128(p);
break;
}
loc += opsize;
}
#endif
}
if(cu && locals && length)
{
bool endarg = false;
unsigned char* p = locals;
unsigned char* end = locals + length;
DWARF_InfoData id;
int off = 8;
int cvid;
std::vector<unsigned char*> lexicalBlockEnd;
lexicalBlockEnd.push_back(end);
while(lexicalBlockEnd.size() > 0)
{
if(p >= lexicalBlockEnd.back())
{
if (!endarg)
endarg = appendEndArg();
appendEnd();
lexicalBlockEnd.pop_back();
continue;
}
if(!readDWARFInfoData(id, cu, p))
continue;
if (id.tag == DW_TAG_formal_parameter)
{
if(id.name)
{
off = decodeLocation(id.location, false, cvid);
if(cvid == S_BPREL_V2)
appendStackVar(id.name, getTypeByDWARFOffset(cu, id.type), off + frameOff);
}
}
else
{
if(!endarg)
endarg = appendEndArg();
switch(id.tag)
{
case DW_TAG_variable:
if(id.name)
{
off = decodeLocation(id.location, false, cvid);
if(cvid == S_BPREL_V2)
appendStackVar(id.name, getTypeByDWARFOffset(cu, id.type), off + frameOff);
}
break;
case DW_TAG_subprogram:
if(id.hasChild && !id.inlined)
p = (id.sibling ? (unsigned char*) cu + id.sibling : end);
break;
case DW_TAG_lexical_block:
if(id.hasChild && id.pchi != id.pclo)
{
appendLexicalBlock(id, pclo + codeSegOff);
if(id.sibling)
lexicalBlockEnd.push_back((unsigned char*) cu + id.sibling);
else
lexicalBlockEnd.push_back(lexicalBlockEnd.back());
}
break;
default:
break;
}
}
}
}
else
{
appendEndArg();
appendEnd();
}
return true;
}
int CV2PDB::addDWARFStructure(DWARF_InfoData& structid, DWARF_CompilationUnit* cu,
unsigned char* &locals, unsigned char* end)
{
bool isunion = structid.tag == DW_TAG_union_type;
int length = structid.hasChild ? end - locals : 0;
int fieldlistType = 0;
int nfields = 0;
if(cu && locals && length)
{
checkDWARFTypeAlloc(100);
codeview_reftype* fl = (codeview_reftype*) (dwarfTypes + cbDwarfTypes);
int flbegin = cbDwarfTypes;
fl->fieldlist.id = LF_FIELDLIST_V2;
cbDwarfTypes += 4;
#if 0
if(structid.containing_type && structid.containing_type != structid.entryOff)
{
codeview_fieldtype* bc = (codeview_fieldtype*) (dwarfTypes + cbDwarfTypes);
bc->bclass_v2.id = LF_BCLASS_V2;
bc->bclass_v2.offset = 0;
bc->bclass_v2.type = getTypeByDWARFOffset(cu, structid.containing_type);
bc->bclass_v2.attribute = 3; // public
cbDwarfTypes += sizeof(bc->bclass_v2);
for (; cbDwarfTypes & 3; cbDwarfTypes++)
dwarfTypes[cbDwarfTypes] = 0xf4 - (cbDwarfTypes & 3);
nfields++;
}
#endif
unsigned char* p = locals;
unsigned char* end = locals + length;
DWARF_InfoData id;
int len = 0;
while(p < end)
{
if(!readDWARFInfoData(id, cu, p))
continue;
int cvid = -1;
if (id.tag == DW_TAG_member && id.name)
{
int off = isunion ? 0 : decodeLocation(id.member_location, true, cvid);
if(isunion || cvid == S_CONSTANT_V2)
{
checkDWARFTypeAlloc(kMaxNameLen + 100);
codeview_fieldtype* dfieldtype = (codeview_fieldtype*) (dwarfTypes + cbDwarfTypes);
cbDwarfTypes += addFieldMember(dfieldtype, 0, off, getTypeByDWARFOffset(cu, id.type), id.name);
nfields++;
}
}
else if(id.tag == DW_TAG_inheritance)
{
int off = decodeLocation(id.member_location, true, cvid);
if(cvid == S_CONSTANT_V2)
{
codeview_fieldtype* bc = (codeview_fieldtype*) (dwarfTypes + cbDwarfTypes);
bc->bclass_v2.id = LF_BCLASS_V2;
bc->bclass_v2.offset = off;
bc->bclass_v2.type = getTypeByDWARFOffset(cu, id.type);
bc->bclass_v2.attribute = 3; // public
cbDwarfTypes += sizeof(bc->bclass_v2);
for (; cbDwarfTypes & 3; cbDwarfTypes++)
dwarfTypes[cbDwarfTypes] = 0xf4 - (cbDwarfTypes & 3);
nfields++;
}
}
if(id.sibling)
p = (unsigned char*) cu + id.sibling;
}
fl = (codeview_reftype*) (dwarfTypes + flbegin);
fl->fieldlist.len = cbDwarfTypes - flbegin - 2;
fieldlistType = nextDwarfType++;
}
checkUserTypeAlloc(kMaxNameLen + 100);
codeview_type* cvt = (codeview_type*) (userTypes + cbUserTypes);
const char* name = (structid.name ? structid.name : "__noname");
int attr = fieldlistType ? 0 : kPropIncomplete;
int len = addAggregate(cvt, false, nfields, fieldlistType, attr, 0, 0, structid.byte_size, name);
cbUserTypes += len;
//ensureUDT()?
int cvtype = nextUserType++;
addUdtSymbol(cvtype, name);
return cvtype;
}
int CV2PDB::getDWARFArrayBounds(DWARF_InfoData& arrayid, DWARF_CompilationUnit* cu,
unsigned char* &locals, unsigned char* end, int& upperBound)
{
int length = arrayid.hasChild ? end - locals : 0;
int lowerBound = 0;
if(cu && locals && length)
{
unsigned char* p = locals;
unsigned char* end = locals + length;
DWARF_InfoData id;
int len = 0;
while(p < end)
{
if(!readDWARFInfoData(id, cu, p))
continue;
int cvid = -1;
if (id.tag == DW_TAG_subrange_type)
{
lowerBound = id.lower_bound;
upperBound = id.upper_bound;
}
if(id.sibling)
p = (unsigned char*) cu + id.sibling;
}
}
return lowerBound;
}
int CV2PDB::addDWARFArray(DWARF_InfoData& arrayid, DWARF_CompilationUnit* cu,
unsigned char* &locals, unsigned char* end)
{
int upperBound, lowerBound = getDWARFArrayBounds(arrayid, cu, locals, end, upperBound);
checkUserTypeAlloc(kMaxNameLen + 100);
codeview_type* cvt = (codeview_type*) (userTypes + cbUserTypes);
cvt->array_v2.id = v3 ? LF_ARRAY_V3 : LF_ARRAY_V2;
cvt->array_v2.elemtype = getTypeByDWARFOffset(cu, arrayid.type);
cvt->array_v2.idxtype = 0x74;
int len = (BYTE*)&cvt->array_v2.arrlen - (BYTE*)cvt;
int size = (upperBound - lowerBound + 1) * getDWARFTypeSize(cu, arrayid.type);
len += write_numeric_leaf(size, &cvt->array_v2.arrlen);
((BYTE*)cvt)[len++] = 0; // empty name
for (; len & 3; len++)
userTypes[cbUserTypes + len] = 0xf4 - (len & 3);
cvt->array_v2.len = len - 2;
cbUserTypes += len;
int cvtype = nextUserType++;
return cvtype;
}
bool CV2PDB::addDWARFTypes()
{
checkUdtSymbolAlloc(100);
int prefix = 4;
DWORD* ddata = new DWORD [img.debug_info_length/4]; // large enough
unsigned char *data = (unsigned char*) (ddata + prefix);
unsigned int off = 0;
unsigned int len;
unsigned int align = 4;
// SSEARCH
codeview_symbol* cvs = (codeview_symbol*) (data + off);
cvs->ssearch_v1.id = S_SSEARCH_V1;
cvs->ssearch_v1.segment = img.codeSegment + 1;
cvs->ssearch_v1.offset = 0;
len = sizeof(cvs->ssearch_v1);
for (; len & (align-1); len++)
data[off + len] = 0xf4 - (len & 3);
cvs->ssearch_v1.len = len - 2;
off += len;
// COMPILAND
cvs = (codeview_symbol*) (data + off);
cvs->compiland_v1.id = S_COMPILAND_V1;
cvs->compiland_v1.unknown = 0x800100; // ?, 0x100: C++,
cvs->compiland_v1.unknown |= img.isX64() ? 0xd0 : 6; //0x06: Pentium Pro/II, 0xd0: x64
len = sizeof(cvs->compiland_v1) - sizeof(cvs->compiland_v1.p_name);
len += c2p("cv2pdb", cvs->compiland_v1.p_name);
for (; len & (align-1); len++)
data[off + len] = 0xf4 - (len & 3);
cvs->compiland_v1.len = len - 2;
off += len;
#if 0
// define one proc over everything
int s = codeSegment;
int pclo = 0; // img.getImageBase() + img.getSection(s).VirtualAddress;
int pchi = pclo + img.getSection(s).Misc.VirtualSize;
addDWARFProc("procall", pclo, pchi, 0, 0, 0);
#endif
//////////////////////////
mspdb::Mod* mod = globalMod();
//return writeSymbols (mod, ddata, off, prefix, true);
return addSymbols (mod, data, off, true);
}
bool CV2PDB::addDWARFSectionContrib(mspdb::Mod* mod, unsigned long pclo, unsigned long pchi)
{
int segIndex = img.findSection(pclo);
if(segIndex >= 0)
{
int segFlags = 0x60101020; // 0x40401040, 0x60500020; // TODO
int rc = mod->AddSecContrib(segIndex, pclo, pchi - pclo, segFlags);
if (rc <= 0)
return setError("cannot add section contribution to module");
}
return true;
}
int CV2PDB::addDWARFBasicType(const char*name, int encoding, int byte_size)
{
int type = 0, mode = 0, size = 0;
switch(encoding)
{
case DW_ATE_boolean: type = 3; break;
case DW_ATE_complex_float: type = 5; byte_size /= 2; break;
case DW_ATE_float: type = 4; break;
case DW_ATE_signed: type = 1; break;
case DW_ATE_signed_char: type = 7; break;
case DW_ATE_unsigned: type = 2; break;
case DW_ATE_unsigned_char: type = 7; break;
case DW_ATE_imaginary_float:type = 4; break;
default:
setError("unknown basic type encoding");
}
switch(type)
{
case 1: // signed
case 2: // unsigned
case 3: // boolean
switch(byte_size)
{
case 1: size = 0; break;
case 2: size = 1; break;
case 4: size = 2; break;
case 8: size = 3; break;
default:
setError("unsupported integer type size");
}
break;
case 4:
case 5:
switch(byte_size)
{
case 4: size = 0; break;
case 8: size = 1; break;
case 10: size = 2; break;
case 12: size = 2; break; // with padding bytes
case 16: size = 3; break;
case 6: size = 4; break;
default:
setError("unsupported real type size");
}
break;
case 7:
switch(byte_size)
{
case 1: size = 0; break;
case 2: size = encoding == DW_ATE_signed_char ? 2 : 3; break;
case 4: size = encoding == DW_ATE_signed_char ? 4 : 5; break;
case 8: size = encoding == DW_ATE_signed_char ? 6 : 7; break;
default:
setError("unsupported real int type size");
}
}
int t = size | (type << 4);
t = translateType(t);
int cvtype = appendTypedef(t, name, false);
if(useTypedefEnum)
addUdtSymbol(cvtype, name);
return cvtype;
}
int CV2PDB::getTypeByDWARFOffset(DWARF_CompilationUnit* cu, int off)
{
int cuoff = (char*) cu - img.debug_info;
std::map<int,int>::iterator it = mapOffsetToType.find(cuoff + off);
if(it == mapOffsetToType.end())
return 0x03; // void
return it->second;
}
int CV2PDB::getDWARFTypeSize(DWARF_CompilationUnit* cu, int typeOff)
{
DWARF_InfoData id;
unsigned char* p = (unsigned char*) cu + typeOff;
if(!readDWARFInfoData(id, cu, p))
return 0;
if(id.byte_size > 0)
return id.byte_size;
switch(id.tag)
{
case DW_TAG_ptr_to_member_type:
case DW_TAG_reference_type:
case DW_TAG_pointer_type:
return cu->address_size;
case DW_TAG_array_type:
{
int upperBound, lowerBound = getDWARFArrayBounds(id, cu, p, p + 1, upperBound);
return (upperBound + lowerBound + 1) * getDWARFTypeSize(cu, id.type);
}
default:
if(id.type)
return getDWARFTypeSize(cu, id.type);
break;
}
return 0;
}
enum iterateOp { kOpMapTypes, kOpCreateTypes };
bool CV2PDB::iterateDWARFDebugInfo(int op)
{
mspdb::Mod* mod = globalMod();
int typeID = nextUserType;
int pointerAttr = img.isX64() ? 0x1000C : 0x800A;
for(unsigned long off = 0; off < img.debug_info_length; )
{
DWARF_CompilationUnit* cu = (DWARF_CompilationUnit*) (img.debug_info + off);
int length = cu->unit_length;
if(length < 0)
break;
length += sizeof(length);
unsigned char* end = (unsigned char*) cu + length;
std::vector<unsigned char*> endStack;
endStack.push_back(end);
for(unsigned char* p = (unsigned char*) (cu + 1); endStack.size() > 0; )
{
if(p >= endStack.back())
{
endStack.pop_back();
continue;
}
DWARF_InfoData id;
if(!readDWARFInfoData(id, cu, p))
continue;
if(id.specification)
{
unsigned char* q = (unsigned char*) cu + id.specification;
readDWARFInfoData(id, cu, q, true);
}
if(id.hasChild)
if(id.sibling)
endStack.push_back((unsigned char*) cu + id.sibling);
else
endStack.push_back(endStack.back());
if(op == kOpMapTypes)
{
switch(id.tag)
{
case DW_TAG_base_type:
case DW_TAG_typedef:
case DW_TAG_pointer_type:
case DW_TAG_subroutine_type:
case DW_TAG_array_type:
case DW_TAG_const_type:
case DW_TAG_structure_type:
case DW_TAG_reference_type:
case DW_TAG_class_type:
case DW_TAG_enumeration_type:
case DW_TAG_string_type:
case DW_TAG_union_type:
case DW_TAG_ptr_to_member_type:
case DW_TAG_set_type:
case DW_TAG_subrange_type:
case DW_TAG_file_type:
case DW_TAG_packed_type:
case DW_TAG_thrown_type:
case DW_TAG_volatile_type:
case DW_TAG_restrict_type: // DWARF3
case DW_TAG_interface_type:
case DW_TAG_unspecified_type:
case DW_TAG_mutable_type: // withdrawn
case DW_TAG_shared_type:
case DW_TAG_rvalue_reference_type:
mapOffsetToType.insert(std::pair<int,int>(off + id.entryOff, typeID));
typeID++;
}
}
else
{
int cvtype = -1;
switch(id.tag)
{
case DW_TAG_base_type:
cvtype = addDWARFBasicType(id.name, id.encoding, id.byte_size);
break;
case DW_TAG_typedef:
cvtype = appendModifierType(getTypeByDWARFOffset(cu, id.type), 0);
addUdtSymbol(cvtype, id.name);
break;
case DW_TAG_pointer_type:
cvtype = appendPointerType(getTypeByDWARFOffset(cu, id.type), pointerAttr);
break;
case DW_TAG_const_type:
cvtype = appendModifierType(getTypeByDWARFOffset(cu, id.type), 1);
break;
case DW_TAG_reference_type:
cvtype = appendPointerType(getTypeByDWARFOffset(cu, id.type), pointerAttr | 0x20);
break;
case DW_TAG_class_type:
case DW_TAG_structure_type:
case DW_TAG_union_type:
cvtype = addDWARFStructure(id, cu, p, endStack.back());
break;
case DW_TAG_array_type:
cvtype = addDWARFArray(id, cu, p, endStack.back());
break;
case DW_TAG_subroutine_type:
case DW_TAG_subrange_type:
case DW_TAG_enumeration_type:
case DW_TAG_string_type:
case DW_TAG_ptr_to_member_type:
case DW_TAG_set_type:
case DW_TAG_file_type:
case DW_TAG_packed_type:
case DW_TAG_thrown_type:
case DW_TAG_volatile_type:
case DW_TAG_restrict_type: // DWARF3
case DW_TAG_interface_type:
case DW_TAG_unspecified_type:
case DW_TAG_mutable_type: // withdrawn
case DW_TAG_shared_type:
case DW_TAG_rvalue_reference_type:
cvtype = appendPointerType(0x74, pointerAttr);
break;
case DW_TAG_subprogram:
if(id.name && id.pclo && id.pchi)
{
addDWARFProc(id, cu, p, endStack.back());
int rc = mod->AddPublic2(id.name, img.codeSegment + 1, id.pclo - codeSegOff, 0);
}
break;
case DW_TAG_compile_unit:
#if !FULL_CONTRIB
if(id.dir && id.name)
{
if(id.ranges > 0 && id.ranges < img.debug_ranges_length)
{
unsigned char* r = (unsigned char*)img.debug_ranges + id.ranges;
unsigned char* rend = (unsigned char*)img.debug_ranges + img.debug_ranges_length;
while(r < rend)
{
unsigned long pclo = RD4(r); r += 4;
unsigned long pchi = RD4(r); r += 4;
if(pclo == 0 && pchi == 0)
break;
//printf("%s %s %x - %x\n", dir, name, pclo, pchi);
if(!addDWARFSectionContrib(mod, pclo, pchi))
return false;
}
}
else
{
//printf("%s %s %x - %x\n", dir, name, pclo, pchi);
if(!addDWARFSectionContrib(mod, id.pclo, id.pchi))
return false;
}
}
#endif
break;
case DW_TAG_variable:
if(id.name)
{
int seg = -1;
unsigned long segOff;
if(id.location == 0 && id.external && id.linkage_name)
{
seg = img.findSymbol(id.linkage_name, segOff);
}
else
{
int cvid;
segOff = decodeLocation(id.location, false, cvid);
if(cvid == S_GDATA_V2)
seg = img.findSection(segOff);
if(seg >= 0)
segOff -= img.getImageBase() + img.getSection(seg).VirtualAddress;
}
if(seg >= 0)
{
int type = getTypeByDWARFOffset(cu, id.type);
appendGlobalVar(id.name, type, seg + 1, segOff);
int rc = mod->AddPublic2(id.name, seg + 1, segOff, type);
}
}
break;
case DW_TAG_formal_parameter:
case DW_TAG_unspecified_parameters:
case DW_TAG_inheritance:
case DW_TAG_member:
case DW_TAG_inlined_subroutine:
case DW_TAG_lexical_block:
default:
break;
}
if(cvtype >= 0)
{
assert(cvtype == typeID); typeID++;
assert(mapOffsetToType[off + id.entryOff] == cvtype);
}
}
}
off += length;
}
if(op == kOpMapTypes)
nextDwarfType = typeID;
return true;
}
bool CV2PDB::createDWARFModules()
{
if(!img.debug_info)
return setError("no .debug_info section found");
codeSegOff = img.getImageBase() + img.getSection(img.codeSegment).VirtualAddress;
mspdb::Mod* mod = globalMod();
for (int s = 0; s < img.countSections(); s++)
{
const IMAGE_SECTION_HEADER& sec = img.getSection(s);
int rc = dbi->AddSec(s + 1, 0x10d, 0, sec.SizeOfRawData);
if (rc <= 0)
return setError("cannot add section");
}
#define FULL_CONTRIB 1
#if FULL_CONTRIB
// we use a single global module, so we can simply add the whole text segment
int segFlags = 0x60101020; // 0x40401040, 0x60500020; // TODO
int s = img.codeSegment;
int pclo = 0; // img.getImageBase() + img.getSection(s).VirtualAddress;
int pchi = pclo + img.getSection(s).Misc.VirtualSize;
int rc = mod->AddSecContrib(s + 1, pclo, pchi - pclo, segFlags);
if (rc <= 0)
return setError("cannot add section contribution to module");
#endif
checkUserTypeAlloc();
*(DWORD*) userTypes = 4;
cbUserTypes = 4;
createEmptyFieldListType();
if(Dversion > 0)
{
appendComplex(0x50, 0x40, 4, "cfloat");
appendComplex(0x51, 0x41, 8, "cdouble");
appendComplex(0x52, 0x42, 12, "creal");
}
countEntries = 0;
if(!iterateDWARFDebugInfo(kOpMapTypes))
return false;
if(!iterateDWARFDebugInfo(kOpCreateTypes))
return false;
#if 0
modules = new mspdb::Mod* [countEntries];
memset (modules, 0, countEntries * sizeof(*modules));
for (int m = 0; m < countEntries; m++)
{
mspdb::Mod* mod = globalMod();
}
#endif
if(cbUserTypes > 0 || cbDwarfTypes)
{
if(dwarfTypes)
{
checkUserTypeAlloc(cbDwarfTypes);
memcpy(userTypes + cbUserTypes, dwarfTypes, cbDwarfTypes);
cbUserTypes += cbDwarfTypes;
cbDwarfTypes = 0;
}
int rc = mod->AddTypes(userTypes, cbUserTypes);
if (rc <= 0)
return setError("cannot add type info to module");
}
return true;
}
bool isRelativePath(const std::string& s)
{
if(s.length() < 1)
return true;
if(s[0] == '/' || s[0] == '\\')
return false;
if(s.length() < 2)
return true;
if(s[1] == ':')
return false;
return true;
}
static int cmpAdr(const void* s1, const void* s2)
{
const mspdb::LineInfoEntry* e1 = (const mspdb::LineInfoEntry*) s1;
const mspdb::LineInfoEntry* e2 = (const mspdb::LineInfoEntry*) s2;
return e1->offset - e2->offset;
}
bool _flushDWARFLines(CV2PDB* cv2pdb, DWARF_LineState& state)
{
if(state.lineInfo.size() == 0)
return true;
unsigned int saddr = state.lineInfo[0].offset;
unsigned int eaddr = state.lineInfo.back().offset;
int segIndex = cv2pdb->img.findSection(saddr + state.seg_offset);
if(segIndex < 0)
{
// throw away invalid lines (mostly due to "set address to 0")
state.lineInfo.resize(0);
return true;
//return false;
}
// if(saddr >= 0x4000)
// return true;
const DWARF_FileName* dfn;
if(state.file == 0)
dfn = state.file_ptr;
else if(state.file > 0 && state.file <= state.files.size())
dfn = &state.files[state.file - 1];
else
return false;
std::string fname = dfn->file_name;
if(isRelativePath(fname) &&
dfn->dir_index > 0 && dfn->dir_index <= state.include_dirs.size())
{
std::string dir = state.include_dirs[dfn->dir_index - 1];
if(dir.length() > 0 && dir[dir.length() - 1] != '/' && dir[dir.length() - 1] != '\\')
dir.append("\\");
fname = dir + fname;
}
for(size_t i = 0; i < fname.length(); i++)
if(fname[i] == '/')
fname[i] = '\\';
mspdb::Mod* mod = cv2pdb->globalMod();
#if 1
bool dump = false; // (fname == "cvtest.d");
//qsort(&state.lineInfo[0], state.lineInfo.size(), sizeof(state.lineInfo[0]), cmpAdr);
#if 0
printf("%s:\n", fname.c_str());
for(size_t ln = 0; ln < state.lineInfo.size(); ln++)
printf(" %08x: %4d\n", state.lineInfo[ln].offset + 0x401000, state.lineInfo[ln].line);
#endif
unsigned int firstLine = state.lineInfo[0].line;
unsigned int firstAddr = state.lineInfo[0].offset;
unsigned int firstEntry = 0;
unsigned int entry = 0;
for(size_t ln = firstEntry; ln < state.lineInfo.size(); ln++)
{
if(state.lineInfo[ln].line < firstLine || state.lineInfo[ln].offset < firstAddr)
{
if(ln > firstEntry)
{
unsigned int length = state.lineInfo[entry-1].offset + 1; // firstAddr has been subtracted before
if(dump)
printf("AddLines(%08x+%04x, Line=%4d+%3d, %s)\n", firstAddr, length, firstLine, entry - firstEntry, fname.c_str());
int rc = mod->AddLines(fname.c_str(), segIndex + 1, firstAddr, length, firstAddr, firstLine,
(unsigned char*) &state.lineInfo[firstEntry],
(ln - firstEntry) * sizeof(state.lineInfo[0]));
firstLine = state.lineInfo[ln].line;
firstAddr = state.lineInfo[ln].offset;
firstEntry = entry;
}
}
else if(ln > firstEntry && state.lineInfo[ln].offset == state.lineInfo[ln-1].offset)
continue; // skip entries without offset change
state.lineInfo[entry].line = state.lineInfo[ln].line - firstLine;
state.lineInfo[entry].offset = state.lineInfo[ln].offset - firstAddr;
entry++;
}
unsigned int length = eaddr - firstAddr;
if(dump)
printf("AddLines(%08x+%04x, Line=%4d+%3d, %s)\n", firstAddr, length, firstLine, entry - firstEntry, fname.c_str());
int rc = mod->AddLines(fname.c_str(), segIndex + 1, firstAddr, length, firstAddr, firstLine,
(unsigned char*) &state.lineInfo[firstEntry],
(entry - firstEntry) * sizeof(state.lineInfo[0]));
#else
unsigned int firstLine = 0;
unsigned int firstAddr = 0;
int rc = mod->AddLines(fname.c_str(), segIndex + 1, saddr, eaddr - saddr, firstAddr, firstLine,
(unsigned char*) &state.lineInfo[0], state.lineInfo.size() * sizeof(state.lineInfo[0]));
#endif
state.lineInfo.resize(0);
return rc > 0;
}
bool CV2PDB::addDWARFLines()
{
if(!img.debug_line)
return setError("no .debug_line section found");
mspdb::Mod* mod = globalMod();
for(unsigned long off = 0; off < img.debug_line_length; )
{
DWARF_LineNumberProgramHeader* hdr = (DWARF_LineNumberProgramHeader*) (img.debug_line + off);
int length = hdr->unit_length;
if(length < 0)
break;
length += sizeof(length);
unsigned char* p = (unsigned char*) (hdr + 1);
unsigned char* end = (unsigned char*) hdr + length;
std::vector<unsigned int> opcode_lengths;
opcode_lengths.resize(hdr->opcode_base);
opcode_lengths[0] = 0;
for(int o = 1; o < hdr->opcode_base && p < end; o++)
opcode_lengths[o] = LEB128(p);
DWARF_LineState state;
state.seg_offset = img.getImageBase() + img.getSection(img.codeSegment).VirtualAddress;
// dirs
while(p < end)
{
if(*p == 0)
break;
state.include_dirs.push_back((const char*) p);
p += strlen((const char*) p) + 1;
}
p++;
// files
DWARF_FileName fname;
while(p < end && *p)
{
fname.read(p);
state.files.push_back(fname);
}
p++;
std::vector<mspdb::LineInfoEntry> lineInfo;
state.init(hdr);
while(p < end)
{
int opcode = *p++;
if(opcode >= hdr->opcode_base)
{
// special opcode
int adjusted_opcode = opcode - hdr->opcode_base;
int operation_advance = adjusted_opcode / hdr->line_range;
state.advance_addr(hdr, operation_advance);
int line_advance = hdr->line_base + (adjusted_opcode % hdr->line_range);
state.line += line_advance;
state.addLineInfo();
state.basic_block = false;
state.prologue_end = false;
state.epilogue_end = false;
state.discriminator = 0;
}
else
{
switch(opcode)
{
case 0: // extended
{
int exlength = LEB128(p);
unsigned char* q = p + exlength;
int excode = *p++;
switch(excode)
{
case DW_LNE_end_sequence:
if((char*)p - img.debug_line >= 0xe4e0)
p = p;
state.end_sequence = true;
state.last_addr = state.address;
state.addLineInfo();
if(!_flushDWARFLines(this, state))
return setError("cannot add line number info to module");
state.init(hdr);
break;
case DW_LNE_set_address:
if(unsigned long adr = RD4(p))
state.address = adr;
else
state.address = state.last_addr; // strange adr 0 for templates?
state.op_index = 0;
break;
case DW_LNE_define_file:
fname.read(p);
state.file_ptr = &fname;
state.file = 0;
break;
case DW_LNE_set_discriminator:
state.discriminator = LEB128(p);
break;
}
p = q;
}
break;
case DW_LNS_copy:
state.addLineInfo();
state.basic_block = false;
state.prologue_end = false;
state.epilogue_end = false;
state.discriminator = 0;
break;
case DW_LNS_advance_pc:
state.advance_addr(hdr, LEB128(p));
break;
case DW_LNS_advance_line:
state.line += SLEB128(p);
break;
case DW_LNS_set_file:
if(!_flushDWARFLines(this, state))
return setError("cannot add line number info to module");
state.file = LEB128(p);
break;
case DW_LNS_set_column:
state.column = LEB128(p);
break;
case DW_LNS_negate_stmt:
state.is_stmt = !state.is_stmt;
break;
case DW_LNS_set_basic_block:
state.basic_block = true;
break;
case DW_LNS_const_add_pc:
state.advance_addr(hdr, (255 - hdr->opcode_base) / hdr->line_range);
break;
case DW_LNS_fixed_advance_pc:
state.address += RD2(p);
state.op_index = 0;
break;
case DW_LNS_set_prologue_end:
state.prologue_end = true;
break;
case DW_LNS_set_epilogue_begin:
state.epilogue_end = true;
break;
case DW_LNS_set_isa:
state.isa = LEB128(p);
break;
default:
// unknown standard opcode
for(unsigned int arg = 0; arg < opcode_lengths[opcode]; arg++)
LEB128(p);
break;
}
}
}
if(!_flushDWARFLines(this, state))
return setError("cannot add line number info to module");
off += length;
}
return true;
}
bool CV2PDB::relocateDebugLineInfo()
{
if(!img.reloc || !img.reloc_length)
return true;
unsigned int img_base = 0x400000;
char* relocbase = img.reloc;
char* relocend = img.reloc + img.reloc_length;
while(relocbase < relocend)
{
unsigned int virtadr = *(unsigned int *) relocbase;
unsigned int chksize = *(unsigned int *) (relocbase + 4);
char* p = img.RVA<char> (virtadr, 1);
if(p >= img.debug_line && p < img.debug_line + img.debug_line_length)
{
for (unsigned int p = 8; p < chksize; p += 2)
{
unsigned short entry = *(unsigned short*)(relocbase + p);
unsigned short type = (entry >> 12) & 0xf;
unsigned short off = entry & 0xfff;
if(type == 3) // HIGHLOW
{
*(long*) (p + off) += img_base;
}
}
}
if(chksize == 0 || chksize >= img.reloc_length)
break;
relocbase += chksize;
}
return true;
}
bool CV2PDB::addDWARFPublics()
{
mspdb::Mod* mod = globalMod();
int type = 0;
int rc = mod->AddPublic2("public_all", img.codeSegment + 1, 0, 0x1000);
if (rc <= 0)
return setError("cannot add public");
return true;
}
bool CV2PDB::writeDWARFImage(const TCHAR* opath)
{
int len = sizeof(*rsds) + strlen((char*)(rsds + 1)) + 1;
if (!img.replaceDebugSection(rsds, len, false))
return setError(img.getLastError());
if (!img.save(opath))
return setError(img.getLastError());
return true;
}
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