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dbgcv.c
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/***************************************************************************
*
* This code is Public Domain.
*
* ========================================================================
*
* Description: Generate CodeView symbolic debug info ( Version 4 format )
*
****************************************************************************/
#include <stddef.h>
#include <globals.h>
#include <memalloc.h>
#include <parser.h>
#include <segment.h>
#include <coff.h>
#include <fixup.h>
#include <dbgcv.h>
#include <linnum.h>
#include <direct.h>
#include <picohash.h>
#define SIZE_CV_SEGBUF ( MAX_LINE_LEN * 4 )
#define EQUATESYMS 1 /* 1=generate info for EQUates ( -Zi3 ) */
#define GENPTRTYPE 0 /* generate a generic pointer type */
static char szCVCompiler[] = "UASM Macro Assembler";
#pragma pack(push, 1)
typedef struct cv_file {
char* name;
uint_32 offset; /* offset into string table */
} cv_file;
typedef struct CV_SECTION {
uint_32 signature;
uint_32 length;
} CV_SECTION;
typedef struct dbgcv {
union {
uint_8* ps;
uint_16* dw;
uint_32* dd;
CFLAGSYM* ps_cp; /* S_COMPILE */
REGSYM_16t* ps_reg; /* S_REGISTER_16t */
CONSTSYM_16t* ps_con; /* S_CONSTANT_16t */
UDTSYM_16t* ps_udt; /* S_UDT_16t */
ENDARGSYM* ps_eb; /* S_END */
OBJNAMESYM* ps_on; /* S_OBJNAME_ST */
BPRELSYM16* ps_br16; /* S_BPREL16 */
PROCSYM16* ps_p16; /* S_xPROC16 */
LABELSYM16* ps_l16; /* S_LABEL16 */
BPRELSYM32_16t* ps_br32; /* S_BPREL32_16t */
DATASYM32_16t* ps_d32; /* S_xDATA[32|16]_16t */
PROCSYM32_16t* ps_p32; /* S_xPROC[32|16]_16t */
REGREL32_16t* ps_rr32; /* S_REGREL32_16t */
LABELSYM32* ps_l32; /* S_LABEL32_ST */
COMPILESYM3* s_cp; /* S_COMPILE3 */
OBJNAMESYM* s_on; /* S_OBJNAME */
ENVBLOCKSYM* s_env; /* S_ENVBLOCK */
REGSYM* s_reg; /* S_REGISTER */
CONSTSYM* s_con; /* S_CONSTANT */
UDTSYM* s_udt; /* S_UDT */
ENDARGSYM* s_eb; /* S_END */
BPRELSYM32* s_br32; /* S_BPREL32 */
DATASYM32* s_d32; /* S_xDATA32 */
PROCSYM32* s_p32; /* S_xPROC32 */
REGREL32* s_rr32; /* S_REGREL32 */
LABELSYM32* s_l32; /* S_LABEL32 */
GUID* s_iid;
};
union {
uint_8* pt;
CV_ARRAY_16t* pt_ar;
CV_POINTER_16t* pt_ptr;
CV_BITFIELD_16t* pt_bf;
CV_UNION_16t* pt_un;
CV_STRUCT_16t* pt_st;
CV_PROCEDURE_16t* pt_pr;
CV_ARGLIST_16t* pt_al;
CV_FIELDLIST* pt_fl;
CV_MEMBER_16t* pt_mbr;
CV_ARRAY* t_ar;
CV_POINTER* t_ptr;
CV_BITFIELD* t_bf;
CV_UNION* t_un;
CV_STRUCT* t_st;
CV_PROCEDURE* t_pr;
CV_ARGLIST* t_al;
CV_FIELDLIST* t_fl;
CV_MEMBER* t_mbr;
};
CV_SECTION* section;
struct dsym* symbols;
struct dsym* types;
void* param;
unsigned level; /* nesting level */
uint_32 currtype; /* current type ( starts with 0x1000 ) */
cv_file* files;
char* currdir;
#if GENPTRTYPE
uint_16 ptrtype[3]; /* generic 16-,32- and 64-bit pointer type */
#endif
} dbgcv;
struct leaf32 {
uint_16 leaf;
uint_32 value32;
};
#pragma pack(pop)
uint_8* SetPrefixName(uint_8* p, uint_8* name, int len)
{
if (Options.debug_symbols < CV_SIGNATURE_C13)
*p++ = len;
memcpy(p, name, len);
p += len;
if (Options.debug_symbols == CV_SIGNATURE_C13)
*p++ = '\0';
return p;
}
/* flush the segment buffer for symbols and types.
* For OMF, the buffer is written to disk. For COFF, it's
* more complicated, because we cannot write now, but also
* don't know yet the final size of the segment. So a linked
* list of buffer items has to be created. The contents will
* later be written inside coff_write_header().
*/
#define checkflush( seg, curr, size, param ) seg->e.seginfo->flushfunc( seg, curr, size, param )
/* translate symbol's mem_type to a codeview typeref */
uint_32 GetTyperef(struct asym* sym, uint_8 Ofssize)
{
if ((sym->mem_type & MT_SPECIAL) == 0) {
int size = SizeFromMemtype(sym->mem_type, Ofssize, sym->type);
if (sym->mem_type & MT_FLOAT) {
switch (size) {
case 2: return ST_REAL16;
case 4: return ST_REAL32;
case 8: return ST_REAL64;
case 10: return ST_REAL80;;
case 16: return ST_UINT8;//ST_REAL128;
}
}
else {
if (sym->mem_type & MT_SIGNED) {
switch (size) {
case 1: return ST_CHAR;
case 2: return ST_INT2;
case 4: return ST_INT4;
case 8: return ST_INT8;
case 16: return ST_UINT8;//ST_INT16;
}
}
else {
switch (size) {
case 1: return ST_UCHAR;
case 2: return ST_CHAR16;// ST_UINT2;
case 4: return ST_UINT4;
case 6: return ST_REAL48;
case 8: return ST_UINT8;
case 16: return ST_UINT8;//ST_UINT16;
}
}
return (sym->Ofssize == USE32) ? ST_UINT4 : ST_UINT8;
}
}
else {
switch (sym->mem_type) {
case MT_PTR:
switch (sym->Ofssize) {
case USE16:
return (sym->isfar ? ST_PFVOID : ST_PVOID);
case USE32:
return (sym->isfar ? ST_32PFVOID : ST_32PVOID);
case USE64:
switch (sym->ptr_memtype) {
case MT_BYTE: return ST_64PUCHAR;
case MT_SBYTE: return ST_64PCHAR;
case MT_WORD: return ST_64PCHAR16;
case MT_SWORD: return ST_64PSHORT;
case MT_REAL2: return ST_64PUINT2;//ST_64PREAL16;
case MT_DWORD: return ST_64PUINT4;
case MT_SDWORD: return ST_64PINT4;
case MT_REAL4: return ST_64PREAL32;
case MT_QWORD: return ST_64PUINT8;
case MT_SQWORD: return ST_64PINT8;
case MT_REAL8: return ST_64PREAL64;
case MT_OWORD: return ST_64PUINT8;//ST_64PUINT16;
case MT_REAL16: return ST_64PUINT8;//ST_64PREAL128;
}
return ST_PVOID;
}
break;
case MT_BITS:
if (sym->cvtyperef)
return(sym->cvtyperef);
break;
case MT_NEAR: return (ST_PVOID);
case MT_FAR: return (ST_PFVOID);
case MT_TYPE:
for (sym = sym->type; sym->type; sym = sym->type);
if (sym->cvtyperef)
return(sym->cvtyperef);
return(GetTyperef(sym, Ofssize));
break;
}
}
return(ST_NOTYPE);
}
/* calc size of a codeview item in symbols segment */
static uint_16 GetCVStructLen(struct asym* sym, uint_8 Ofssize)
{
if (sym->state == SYM_TYPE)
return(Options.debug_symbols == CV_SIGNATURE_C7 ? sizeof(UDTSYM_16t) - 1 : sizeof(UDTSYM) - 1);
if (Options.debug_symbols == CV_SIGNATURE_C7) {
if (sym->isproc && Options.debug_ext >= CVEX_REDUCED)
return (Ofssize == USE16 ? sizeof(PROCSYM16) - 1 : sizeof(PROCSYM32_16t) - 1);
if (sym->mem_type == MT_NEAR || sym->mem_type == MT_FAR)
return (Ofssize == USE16 ? sizeof(LABELSYM16) - 1 : sizeof(LABELSYM32) - 1);
#if EQUATESYMS
if (sym->isequate)
return sizeof(CONSTSYM_16t) + (sym->value >= LF_NUMERIC ? 2 : 0);
#endif
return sizeof(DATASYM32_16t) - 1;
}
if (sym->isproc && Options.debug_ext >= CVEX_REDUCED)
return sizeof(PROCSYM32) - 1;
if (sym->mem_type == MT_NEAR || sym->mem_type == MT_FAR)
return sizeof(LABELSYM32) - 1;
#if EQUATESYMS
if (sym->isequate)
return sizeof(CONSTSYM) + (sym->value >= LF_NUMERIC ? 2 : 0);
#endif
return sizeof(DATASYM32) - 1;
}
static void PadBytes(uint_8* curr, uint_8* base)
{
static const char padtab[] = { LF_PAD1, LF_PAD2, LF_PAD3 };
for (; (curr - base) & 3; curr++)
*curr = padtab[3 - ((curr - base) & 3)];
}
/* write a bitfield to $$TYPES */
static void cv_write_bitfield(dbgcv* cv, struct dsym* type, struct asym* sym)
{
uint_32 tref = GetTyperef((struct asym*)type, USE16);
uint_32 size = (Options.debug_symbols == CV_SIGNATURE_C7 ?
sizeof(CV_BITFIELD_16t) : sizeof(CV_BITFIELD));
cv->pt = checkflush(cv->types, cv->pt, size, cv->param);
sym->cvtyperef = cv->currtype++;
cv->pt_bf->size = size - sizeof(uint_16);
if (Options.debug_symbols == CV_SIGNATURE_C7) {
cv->pt_bf->leaf = LF_BITFIELD_16t;
cv->pt_bf->length = sym->total_size;
cv->pt_bf->position = sym->offset;
cv->pt_bf->type = tref;
}
else {
cv->t_bf->leaf = LF_BITFIELD;
cv->t_bf->length = sym->total_size;
cv->t_bf->position = sym->offset;
cv->t_bf->type = tref;
cv->t_bf->reserved = 0xF1F2; /* added for alignment */
}
cv->pt += size;
}
static void cv_write_array_type(struct dbgcv* cv, struct asym* sym,
uint_32 elemtype, uint_8 Ofssize)
{
uint_8* tmp;
int typelen = (sym->total_size >= LF_NUMERIC ? sizeof(uint_32) : 0);
int size = ((Options.debug_symbols == CV_SIGNATURE_C7 ? sizeof(CV_ARRAY_16t)
: sizeof(CV_ARRAY)) + typelen + sizeof(uint_16) + 1 + 3) & ~3;
cv->pt = checkflush(cv->types, cv->pt, size, cv->param);
cv->pt_ar->size = size - sizeof(uint_16);
if (elemtype == 0)
elemtype = GetTyperef(sym, Ofssize);
if (Options.debug_symbols == CV_SIGNATURE_C7) {
cv->pt_ar->leaf = LF_ARRAY_16t;
cv->pt_ar->elemtype = elemtype;
cv->pt_ar->idxtype = ST_LONG; /* ok? */
tmp = cv->pt_ar->data;
}
else {
cv->t_ar->leaf = LF_ARRAY;
cv->t_ar->elemtype = elemtype;
cv->t_ar->idxtype = GetTyperef(sym, Ofssize);
tmp = cv->t_ar->data;
}
if (typelen) {
*(uint_16*)tmp = LF_ULONG;
tmp += sizeof(uint_16);
*(uint_32*)tmp = sym->total_size;
tmp += sizeof(uint_32);
}
else {
*(uint_16*)tmp = sym->total_size;
tmp += sizeof(uint_16);
}
*tmp++ = NULLC; /* the array type name is empty */
PadBytes(tmp, cv->types->e.seginfo->CodeBuffer);
cv->pt += size;
cv->currtype++;
return;
}
/* create a pointer type for procedure params and locals.
* the symbol's mem_type is MT_PTR.
*/
static uint_32 cv_write_ptr_type(struct dbgcv* cv, struct asym* sym)
{
uint_32 attr, type;
uint_32 size = sizeof(CV_POINTER);
uint_32 leaf = LF_POINTER;
if (Options.debug_symbols == CV_SIGNATURE_C7) {
size = sizeof(CV_POINTER_16t);
leaf = LF_POINTER_16t;
}
/* for untyped pointers & for function pointers don't create a type, just
* return a void ptr.
*/
if ((sym->ptr_memtype == MT_EMPTY && sym->target_type == NULL) || sym->ptr_memtype == MT_PROC)
return(GetTyperef(sym, sym->Ofssize));
cv->pt = checkflush(cv->types, cv->pt, size, cv->param);
cv->pt_ptr->size = size - sizeof(uint_16);
cv->pt_ptr->leaf = leaf;
if (sym->Ofssize == USE16)
attr = (sym->isfar ? CV_PTR_FAR : CV_PTR_NEAR);
else if (sym->Ofssize == USE32)
attr = (sym->isfar ? CV_PTR_FAR32 : CV_PTR_NEAR32);
else
attr = CV_PTR_64;
/* if indirection is > 1, define an untyped pointer - to be improved */
if (sym->is_ptr > 1) {
type = GetTyperef(sym, sym->Ofssize);
}
else if (sym->target_type) {
/* the target's typeref must have been set here */
if (sym->target_type->cvtyperef)
type = sym->target_type->cvtyperef;
else
type = GetTyperef(sym, sym->Ofssize);
}
else { /* pointer to simple type */
unsigned char tmpmt = sym->mem_type; /* the target type is tmp. copied to mem_type */
sym->mem_type = sym->ptr_memtype; /* thus GetTyperef() can be used */
type = GetTyperef(sym, sym->Ofssize);
sym->mem_type = tmpmt;
}
if (Options.debug_symbols == CV_SIGNATURE_C7) {
cv->pt_ptr->attr = attr;
cv->pt_ptr->utype = type;
cv->pt_ptr->pmclass = 0;
cv->pt_ptr->pmenum = 0;
}
else {
cv->t_ptr->attr = attr;
cv->t_ptr->utype = type;
cv->t_ptr->pmclass = 0;
cv->t_ptr->pmenum = 0;
}
cv->pt += size;
return(cv->currtype++);
}
/* structure for field enumeration callback function */
struct cv_counters {
unsigned cnt; /* number of fields */
uint_32 size; /* size of field list */
uint_32 ofs; /* current start offset for member */
};
static void cv_write_type(struct dbgcv* cv, struct asym* sym);
/* type of field enumeration callback function */
typedef void (*cv_enum_func)(struct dsym*, struct asym*, struct dbgcv*, struct cv_counters*);
/* field enumeration callback, does:
* - count number of members in a field list
* - calculate the size LF_MEMBER records inside the field list
* - create types ( array, structure ) if not defined yet
*/
static void cv_cntproc(struct dsym* type, struct asym* mbr, struct dbgcv* cv, struct cv_counters* cc)
{
int numsize;
uint_32 offset;
uint_32 size = sizeof(CV_MEMBER);
if (Options.debug_symbols == CV_SIGNATURE_C7)
size = sizeof(CV_MEMBER_16t);
cc->cnt++;
offset = (type->sym.typekind == TYPE_RECORD ? 0 : mbr->offset + cc->ofs);
numsize = (offset >= LF_NUMERIC ? sizeof(uint_32) : 0);
cc->size += (size + 2 + numsize + mbr->name_size + 1 + 3) & ~3;
/* field cv_typeref can only be queried from SYM_TYPE items! */
if (mbr->mem_type == MT_TYPE && mbr->type->cvtyperef == 0) {
cv->level++;
cv_write_type(cv, mbr->type);
cv->level--;
}
else if (mbr->mem_type == MT_BITS && mbr->cvtyperef == 0) {
cv_write_bitfield(cv, type, mbr);
}
if (mbr->isarray) {
/* temporarily (mis)use ext_idx1 member to store the type;
* this field usually isn't used by struct fields */
mbr->ext_idx1 = cv->currtype;
cv_write_array_type(cv, mbr, 0, USE16);
}
}
/* field enumeration callback, does:
* - create LF_MEMBER record
*/
static void cv_memberproc(struct dsym* type, struct asym* mbr, struct dbgcv* cv, struct cv_counters* cc)
{
uint_32 offset;
uint_32 index;
int typelen;
uint_8* tmp;
uint_32 size = sizeof(CV_MEMBER);
uint_32 leaf = LF_MEMBER;
if (Options.debug_symbols == CV_SIGNATURE_C7) {
size = sizeof(CV_MEMBER_16t);
leaf = LF_MEMBER_16t;
}
offset = (type->sym.typekind == TYPE_RECORD ? 0 : mbr->offset + cc->ofs);
typelen = (offset >= LF_NUMERIC ? sizeof(uint_32) : 0);
size = (size + 2 + typelen + 1 + mbr->name_size + 3) & ~3;
cv->pt = checkflush(cv->types, cv->pt, size, cv->param);
cv->pt_mbr->leaf = leaf;
if (mbr->isarray) {
index = mbr->ext_idx1;
mbr->ext_idx1 = 0; /* reset the temporarily used field */
}
else
index = GetTyperef(mbr, USE16);
if (Options.debug_symbols == CV_SIGNATURE_C7) {
cv->pt_mbr->index = index;
cv->pt_mbr->attr.flags = 0;
cv->pt_mbr->attr.access = CV_public;
cv->pt_mbr->attr.mprop = CV_MTvanilla;
tmp = cv->pt_mbr->offset;
}
else {
cv->t_mbr->index = index;
cv->t_mbr->attr.flags = 0;
cv->t_mbr->attr.access = CV_public;
cv->t_mbr->attr.mprop = CV_MTvanilla;
tmp = cv->t_mbr->offset;
}
if (typelen == 0) {
*(uint_16*)tmp = offset;
tmp += sizeof(uint_16);
}
else {
*(uint_16*)tmp = LF_ULONG;
tmp += sizeof(uint_16);
*(uint_32*)tmp = offset;
tmp += sizeof(uint_32);
}
tmp = SetPrefixName(tmp, mbr->name, mbr->name_size);
PadBytes(tmp, cv->types->e.seginfo->CodeBuffer);
cv->pt += size;
}
/* field enumeration function.
* The MS debug engine has problem with anonymous members (both members
* and embedded structs).
* If such a member is included, the containing struct can't be "opened".
* The OW debugger and PellesC debugger have no such problems.
* However, for Masm-compatibility, anonymous members are avoided and
* anonymous struct members or embedded anonymous structs are "unfolded"
* in this function.
*/
static void cv_enum_fields(struct dsym* sym, cv_enum_func enumfunc, struct dbgcv* cv, struct cv_counters* cc)
{
unsigned i;
struct sfield* curr;
for (curr = sym->e.structinfo->head, i = 0; curr; curr = curr->next) {
if (curr->sym.name_size) { /* has member a name? */
enumfunc(sym, &curr->sym, cv, cc);
}
else if (curr->sym.type) { /* is member a type (struct, union, record)? */
cc->ofs += curr->sym.offset;
cv_enum_fields((struct dsym*)curr->sym.type, enumfunc, cv, cc);
cc->ofs -= curr->sym.offset;
}
else if (sym->sym.typekind == TYPE_UNION) {
/* v2.11: include anonymous union members.
* to make the MS debugger work with those members, they must have a name -
* a temporary name is generated below which starts with "@@".
*/
char* pold = curr->sym.name;
char tmpname[8];
curr->sym.name_size = sprintf(tmpname, "@@%u", ++i);
curr->sym.name = tmpname;
enumfunc(sym, &curr->sym, cv, cc);
curr->sym.name = pold;
curr->sym.name_size = 0;
}
}
return;
}
/* write a LF_PROCEDURE & LF_ARGLIST type for procedures */
static void cv_write_type_procedure(struct dbgcv* cv, struct asym* sym, int cnt)
{
int size = sizeof(CV_PROCEDURE);
int leaf = LF_PROCEDURE;
int type = sizeof(CV_typ_t);
CV_typ_t* p_32;
CV_typ16_t* p_16;
struct dsym* param;
if (Options.debug_symbols == CV_SIGNATURE_C7) {
size = sizeof(CV_PROCEDURE_16t);
leaf = LF_PROCEDURE_16t;
type = sizeof(CV_typ16_t);
}
cv->pt = checkflush(cv->types, cv->pt, size, cv->param);
cv->pt_pr->size = size - sizeof(uint_16);
cv->pt_pr->leaf = leaf;
if (Options.debug_symbols == CV_SIGNATURE_C7) {
cv->pt_pr->rvtype = ST_VOID;
cv->pt_pr->calltype = 0;
cv->pt_pr->funcattr.all = 0;
cv->pt_pr->parmcount = cnt;
cv->pt_pr->arglist = ++cv->currtype;
}
else {
cv->t_pr->rvtype = ST_VOID;
cv->t_pr->calltype = 0;
cv->t_pr->funcattr.all = 0;
cv->t_pr->parmcount = cnt;
cv->t_pr->arglist = ++cv->currtype;
}
cv->pt += size;
size = sizeof(CV_ARGLIST);
leaf = LF_ARGLIST;
if (Options.debug_symbols == CV_SIGNATURE_C7) {
size = sizeof(CV_ARGLIST_16t);
leaf = LF_ARGLIST_16t;
}
size = size + cnt * type;
cv->pt = checkflush(cv->types, cv->pt, size, cv->param);
cv->pt_al->size = size - sizeof(uint_16);
cv->pt_al->leaf = leaf;
if (Options.debug_symbols == CV_SIGNATURE_C7) {
cv->pt_al->count = cnt;
p_16 = (CV_typ16_t*)(cv->pt + sizeof(CV_ARGLIST_16t));
}
else {
cv->t_al->count = cnt;
p_32 = (CV_typ_t*)(cv->pt + sizeof(CV_ARGLIST));
}
/* fixme: order might be wrong ( is "push" order ) */
for (param = ((struct dsym*)sym)->e.procinfo->paralist; param; param = param->nextparam) {
if (Options.debug_symbols == CV_SIGNATURE_C7) {
*p_16++ = param->sym.ext_idx1;
}
else {
if (ModuleInfo.defOfssize == USE64) /*...*/
p_32[--cnt] = param->sym.ext_idx1;
else
*p_32++ = param->sym.ext_idx1;
}
}
cv->pt += size;
cv->currtype++;
}
/* write a type. Items are dword-aligned,
* cv: debug state
* sym: type to dump
*/
static void cv_write_type(struct dbgcv* cv, struct asym* sym)
{
struct dsym* type = (struct dsym*)sym;
uint_8* tmp;
int namesize;
int typelen;
int size;
int leaf;
CV_prop_t property;
struct cv_counters count;
/* v2.10: handle typedefs. when the types are enumerated,
* typedefs are ignored.
*/
if (sym->typekind == TYPE_TYPEDEF) {
if (sym->mem_type == MT_PTR) {
#if GENPTRTYPE
/* for untyped void pointers use ONE generic definition */
if (!sym->isfar) {
if (cv->ptrtype[sym->Ofssize]) {
sym->cv_typeref = cv->ptrtype[sym->Ofssize];
return;
}
cv->ptrtype[sym->Ofssize] = cv->currtype;
}
#endif
if (sym->ptr_memtype != MT_PROC && sym->target_type && sym->target_type->cvtyperef == 0) {
if (cv->level == 0) /* avoid circles */
cv_write_type(cv, sym->target_type);
}
sym->cvtyperef = cv_write_ptr_type(cv, sym);
}
return;
}
else if (sym->typekind == TYPE_NONE) {
return;
}
property.flags = 0;
typelen = (sym->total_size >= LF_NUMERIC ? sizeof(uint_32) : 0);
if (cv->level)
property.isnested = 1;
/* Count the member fields. If a member's type is unknown, create it! */
count.cnt = 0;
count.size = 0;
count.ofs = 0;
cv_enum_fields(type, cv_cntproc, cv, &count);
/* WinDbg wants embedded structs to have a name - else it won't allow to "open" it. */
namesize = (sym->name_size ? sym->name_size : 9); /* 9 is sizeof("__unnamed") */
sym->cvtyperef = cv->currtype++;
switch (type->sym.typekind) {
case TYPE_UNION:
size = sizeof(CV_UNION);
leaf = LF_UNION;
if (Options.debug_symbols == CV_SIGNATURE_C7) {
size = sizeof(CV_UNION_16t);
leaf = LF_UNION_16t;
}
size = (2 + size + typelen + 1 + namesize + 3) & ~3;
cv->pt = checkflush(cv->types, cv->pt, size, cv->param);
cv->pt_un->size = size - sizeof(uint_16);
cv->pt_un->leaf = leaf;
cv->pt_un->count = count.cnt;
if (Options.debug_symbols == CV_SIGNATURE_C7) {
cv->pt_un->field = cv->currtype++;
cv->pt_un->property = property;
tmp = cv->pt_un->data;
}
else {
cv->t_un->field = cv->currtype++;
cv->t_un->property = property;
tmp = cv->t_un->data;
}
break;
case TYPE_RECORD:
property.packed = 1; /* is "packed" */
/* no break */
case TYPE_STRUCT:
size = sizeof(CV_STRUCT);
leaf = LF_STRUCTURE;
if (Options.debug_symbols == CV_SIGNATURE_C7) {
size = sizeof(CV_STRUCT_16t);
leaf = LF_STRUCTURE_16t;
}
size = (2 + size + typelen + 1 + namesize + 3) & ~3;
cv->pt = checkflush(cv->types, cv->pt, size, cv->param);
cv->pt_st->size = size - sizeof(uint_16);
cv->pt_st->leaf = leaf;
cv->pt_st->count = count.cnt;
if (Options.debug_symbols == CV_SIGNATURE_C7) {
cv->pt_st->field = cv->currtype++;
cv->pt_st->property = property;
cv->pt_st->derived = 0;
cv->pt_st->vshape = 0;
tmp = cv->pt_st->data;
}
else {
cv->t_st->field = cv->currtype++;
cv->t_st->property = property;
cv->t_st->derived = 0;
cv->t_st->vshape = 0;
tmp = cv->t_st->data;
}
break;
}
if (typelen) {
((struct leaf32*)tmp)->leaf = LF_ULONG;
((struct leaf32*)tmp)->value32 = sym->total_size;
tmp += sizeof(struct leaf32);
}
else {
*(uint_16*)tmp = sym->total_size;
tmp += sizeof(uint_16);
}
tmp = SetPrefixName(tmp, sym->name_size ? sym->name : "__unnamed", namesize);
PadBytes(tmp, cv->types->e.seginfo->CodeBuffer);
cv->pt += size;
/* write the fieldlist record */
cv->pt = checkflush(cv->types, cv->pt, sizeof(CV_FIELDLIST), cv->param);
size = sizeof(CV_FIELDLIST) + count.size;
cv->pt_fl->size = size - sizeof(uint_16);
cv->pt_fl->leaf = (Options.debug_symbols == CV_SIGNATURE_C7) ? LF_FIELDLIST_16t : LF_FIELDLIST;
cv->pt += sizeof(CV_FIELDLIST);
/* add the struct's members to the fieldlist. */
count.ofs = 0;
cv_enum_fields(type, cv_memberproc, cv, &count);
return;
}
/* get register values for S_REGISTER */
uint_16 cv_get_register(struct asym* sym)
{
uint_16 regno;
uint_16 rc = 0;
unsigned flags;
int i;
for (i = 0; i < 2; i++) {
if (sym->regist[i]) {
flags = GetValueSp(sym->regist[i]);
regno = 1 + GetRegNo(sym->regist[i]);
if (flags & OP_R16)
regno += 8;
else if (flags & OP_R32)
regno += 16;
else if (flags & OP_SR)
regno += 24;
rc |= regno << (i * 8);
}
}
return(rc);
}
/*
* convert register number
* 0 1 2 3 4 5 6 7
* -----------------------------
* from: ax cx dx bx sp bp si di
* to: ax bx cx dx si di bp sp
*/
static const uint_8 reg64[] = { 0, 2, 3, 1, 7, 6, 4, 5 };
uint_16 cv_get_x64_regno(uint_16 regno)
{
if (regno >= T_RAX && regno <= T_RDI)
return(reg64[regno - T_RAX] + CV_AMD64_RAX);
if (regno >= T_R8 && regno <= T_R15)
return(regno - T_R8 + CV_AMD64_RAX + 8);
/* it's a 32-bit register r8d-r15d */
return(regno - T_R8D + CV_AMD64_R8D);
}
/* write a symbol
* cv: debug state
* sym: symbol to write
* the symbol has either state SYM_INTERNAL or SYM_TYPE.
*/
static void cv_write_symbol(struct dbgcv* cv, struct asym* sym)
{
int len;
unsigned ofs;
enum fixup_types rlctype;
uint_8 Ofssize;
struct fixup* fixup;
struct dsym* proc;
struct dsym* lcl;
int i, j, k;
int cnt[2];
struct dsym* locals[2];
struct dsym* q;
int size;
int leaf;
uint_16 typeref;
Ofssize = GetSymOfssize(sym);
len = GetCVStructLen(sym, Ofssize);
cv->ps = checkflush(cv->symbols, cv->ps, 1 + sym->name_size + len, cv->param);
if (sym->state == SYM_TYPE) {
/* Masm does only generate an UDT for typedefs
* if the underlying type is "used" somewhere.
* example:
* LPSTR typedef ptr BYTE
* will only generate an S_UDT for LPSTR if either
* "LPSTR" or "ptr BYTE" is used in the source.
*/
size = sizeof(UDTSYM);
leaf = S_UDT;
if (Options.debug_symbols == CV_SIGNATURE_C7) {
size = sizeof(UDTSYM_16t);
leaf = S_UDT_16t;
}
cv->ps_udt->reclen = size - sizeof(uint_16) + sym->name_size;
cv->ps_udt->rectyp = leaf;
/* v2.10: pointer typedefs will now have a cv_typeref */
if (sym->cvtyperef)
leaf = sym->cvtyperef;
else
leaf = GetTyperef(sym, Ofssize);
if (Options.debug_symbols == CV_SIGNATURE_C7)
cv->ps_udt->typind = leaf;
else
cv->s_udt->typind = leaf;
/* Some typedefs won't get a valid type (<name> TYPEDEF PROTO ...).
* In such cases just skip the type!
*/
if (leaf) {
cv->ps += len;
cv->ps = SetPrefixName(cv->ps, sym->name, sym->name_size);
if (Options.debug_symbols == CV_SIGNATURE_C13)
cv->section->length += len + sym->name_size + 1;
}
return;
}
/* rest is SYM_INTERNAL */
/* there are 3 types of INTERNAL symbols:
* - numeric constants ( equates, memtype MT_EMPTY )
* - code labels, memtype == MT_NEAR | MT_FAR
* - procs
* - simple labels
* - data labels, memtype != MT_NEAR | MT_FAR
*/
if (sym->isproc && Options.debug_ext >= CVEX_REDUCED) { /* v2.10: no locals for -Zi0 */
proc = (struct dsym*)sym;
/* for PROCs, scan parameters and locals and create their types. */
/* scan local symbols */
locals[0] = proc->e.procinfo->paralist;
locals[1] = proc->e.procinfo->locallist;
for (i = 0; i < 2; i++) {
if (ModuleInfo.defOfssize == USE64 && i == 0) {
for (j = 0, lcl = locals[0]; lcl; q = lcl, lcl = lcl->nextparam)
j++;
}
cnt[i] = 0;
for (lcl = locals[i]; lcl; lcl = lcl->nextparam) {
if (!(ModuleInfo.defOfssize == USE64 && i == 0))
q = lcl;
cnt[i]++;
typeref = (q->sym.mem_type == MT_PTR ? cv_write_ptr_type(cv, &q->sym) : GetTyperef(&q->sym, Ofssize));
if (q->sym.isarray) {
cv_write_array_type(cv, &q->sym, typeref, Ofssize);
typeref = cv->currtype - 1;
}
q->sym.ext_idx1 = typeref;
if (ModuleInfo.defOfssize == USE64 && i == 0) {
for (k = 1, j--, q = locals[0]; j > k; k++, q = q->nextparam);
}
}
}
if (Ofssize == USE16) {
PROCSYM16* p = cv->ps_p16;
p->reclen = sizeof(PROCSYM16) - sizeof(uint_16) + sym->name_size;
p->rectyp = (sym->ispublic ? S_GPROC16 : S_LPROC16);
p->pParent = 0; /* filled by CVPACK */
p->pEnd = 0; /* filled by CVPACK */
p->pNext = 0; /* filled by CVPACK */
p->len = sym->total_size;
p->DbgStart = ((struct dsym*)sym)->e.procinfo->size_prolog;
p->DbgEnd = sym->total_size;
p->off = 0;
p->seg = 0;
p->typind = cv->currtype; /* typeref LF_PROCEDURE */
p->flags.bAll = (sym->mem_type == MT_FAR ? CV_PROCF_FAR : 0);
rlctype = FIX_PTR16;
ofs = offsetof(PROCSYM16, off);
}
else {
PROCSYM32_16t* p = cv->ps_p32;
size = sizeof(PROCSYM32);
leaf = (sym->ispublic ? S_GPROC32 : S_LPROC32);
if (Options.debug_symbols == CV_SIGNATURE_C7) {
size = sizeof(PROCSYM32_16t);
leaf = (sym->ispublic ? S_GPROC32_16t : S_LPROC32_16t);
}
p->reclen = size - sizeof(uint_16) + sym->name_size;
p->rectyp = leaf;
p->pParent = 0; /* filled by CVPACK */
p->pEnd = 0; /* filled by CVPACK */
p->pNext = 0; /* filled by CVPACK */
p->len = sym->total_size;
p->DbgStart = ((struct dsym*)sym)->e.procinfo->size_prolog;
p->DbgEnd = sym->total_size;
if (Options.debug_symbols == CV_SIGNATURE_C7) {
p->off = 0;
p->seg = 0;
p->typind = cv->currtype; /* typeref LF_PROCEDURE */
p->flags.bAll = 0;
if (sym->mem_type == MT_FAR)
p->flags.CV_PFLAG_FAR = 1;
if (proc->e.procinfo->fpo)
p->flags.CV_PFLAG_NOFPO = 1;
ofs = offsetof(PROCSYM32_16t, off);
}
else {
cv->s_p32->off = 0;
cv->s_p32->seg = 0;
cv->s_p32->typind = cv->currtype;
cv->s_p32->flags.bAll = 0;
if (sym->mem_type == MT_FAR)
cv->s_p32->flags.CV_PFLAG_FAR = 1;
if (proc->e.procinfo->fpo)
cv->s_p32->flags.CV_PFLAG_NOFPO = 1;
ofs = offsetof(PROCSYM32, off);
}
rlctype = FIX_PTR32;
}
cv_write_type_procedure(cv, sym, cnt[0]);
}
else if (sym->mem_type == MT_NEAR || sym->mem_type == MT_FAR) {
if (Ofssize == USE16) {
cv->ps_l16->reclen = sizeof(LABELSYM16) - sizeof(uint_16) + sym->name_size;
cv->ps_l16->rectyp = S_LABEL16;
cv->ps_l16->off = 0;
cv->ps_l16->seg = 0;
cv->ps_l16->flags.bAll = (sym->mem_type == MT_FAR ? CV_PROCF_FAR : 0);
rlctype = FIX_PTR16;
ofs = offsetof(LABELSYM16, off);
}
else {
cv->ps_l32->reclen = sizeof(LABELSYM32) - sizeof(uint_16) + sym->name_size;
if (Options.debug_symbols == CV_SIGNATURE_C7)
cv->ps_l32->rectyp = S_LABEL32_ST;
else
cv->ps_l32->rectyp = S_LABEL32;
cv->ps_l32->off = 0;
cv->ps_l32->seg = 0;
cv->ps_l32->flags.bAll = (sym->mem_type == MT_FAR ? CV_PROCF_FAR : 0);
rlctype = FIX_PTR32;
ofs = offsetof(LABELSYM32, off);
}
#if EQUATESYMS
}
else if (sym->isequate) {
cv->ps_con->reclen = len - sizeof(uint_16) + 1 + sym->name_size;
if (Options.debug_symbols == CV_SIGNATURE_C7) {
cv->ps_con->rectyp = S_CONSTANT_16t;
cv->ps_con->typind = ST_ABS;
if (sym->value >= LF_NUMERIC) {
uint_8* tmp = cv->ps_con->name;
cv->ps_con->value = LF_ULONG;
*(uint_32*)tmp = sym->value;
}
else