/
dbgcv.c
1117 lines (1019 loc) · 45.5 KB
/
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 "fixup.h"
#include "myassert.h"
#include "dbgcv.h"
#define EQUATESYMS 1 /* 1=generate info for EQUates ( -Zi3 ) */
#define SIZE_CV_SEGBUF ( MAX_LINE_LEN * 2 ) /* assumed size of codeview sections temp buffer */
#define GENPTRTYPE 0 /* generate a generic pointer type */
#define SetPrefixName( p, name, len ) *p++ = len; memcpy( p, name, len ); p += len
extern const char szCVCompiler[];
union cv_typeref_u {
struct cv_primitive_type s;
cv_typeref uvalue;
};
struct dbgcv {
union {
uint_8 *ps;
struct cv_symrec_compile *ps_cp; /* S_COMPILE */
struct cv_symrec_register *ps_reg; /* S_REGISTER */
struct cv_symrec_constant *ps_con; /* S_CONSTANT */
struct cv_symrec_udt *ps_udt; /* S_UDT */
struct cv_symrec_endblk *ps_eb; /* S_ENDBLK */
struct cv_symrec_objname *ps_on; /* S_OBJNAME */
struct cv_symrec_bprel16 *ps_br16;/* S_BPREL16 */
struct cv_symrec_ldata16 *ps_d16; /* S_xDATA16 */
struct cv_symrec_lproc16 *ps_p16; /* S_xPROC16 */
struct cv_symrec_label16 *ps_l16; /* S_LABEL16 */
struct cv_symrec_bprel32 *ps_br32;/* S_BPREL32 */
struct cv_symrec_ldata32 *ps_d32; /* S_xDATA32 */
struct cv_symrec_lproc32 *ps_p32; /* S_xPROC32 */
struct cv_symrec_regrel32 *ps_rr32;/* S_REGREL32 */
struct cv_symrec_label32 *ps_l32; /* S_LABEL32 */
};
struct dsym *symbols;
union {
uint_8 *pt;
struct cv_typerec_array *pt_ar;
struct cv_typerec_pointer *pt_ptr;
struct cv_typerec_bitfield *pt_bf;
struct cv_typerec_union *pt_un;
struct cv_typerec_structure *pt_st;
struct cv_typerec_procedure *pt_pr;
struct cv_typerec_arglist *pt_al;
struct cv_typerec_fieldlist *pt_fl;
struct cv_typerec_member *pt_mbr;
};
struct dsym *types;
void *param;
unsigned level; /* nesting level */
cv_typeref currtype; /* current type ( starts with 0x1000 ) */
#if GENPTRTYPE
uint_16 ptrtype[3]; /* generic 16-,32- and 64-bit pointer type */
#endif
};
struct leaf32 {
uint_16 leaf;
uint_32 value32;
};
static const union cv_typeref_u cv_idx_type = { CV_PDS_INTEGRAL_4BYTE, 0, CV_PDT_SIGNED_INTEGRAL, CV_PDM_DIRECT, 0 };
static const union cv_typeref_u cv_void = { CV_PDS_SPECIAL_VOID, 0, CV_PDT_SPECIAL, CV_PDM_DIRECT, 0 };
//static const union cv_typeref_u cv_pvoid = { CV_PDS_SPECIAL_VOID, 0, CV_PDT_SPECIAL, CV_PDM_DIRECT, 0 };
#if EQUATESYMS
static const union cv_typeref_u cv_abs_type = { CV_PDS_SPECIAL_ABSOLUTE,0,CV_PDT_SPECIAL, CV_PDM_DIRECT, 0 };
#endif
/* translate symbol's mem_type to a codeview typeref */
static cv_typeref GetTyperef( struct asym *sym, uint_8 Ofssize )
/**************************************************************/
{
union cv_typeref_u value = { CV_PDS_SPECIAL_NO_TYPE, 0, CV_PDT_SPECIAL, CV_PDM_DIRECT, 0 };
if ( ( sym->mem_type & MT_SPECIAL ) == 0 ) {
int size = SizeFromMemtype( sym->mem_type, Ofssize, sym->type );
if ( sym->mem_type & MT_FLOAT ) {
value.s.type = CV_PDT_REAL;
switch ( size ) {
case 4: value.s.size = CV_PDS_REAL_32BIT; break;
case 8: value.s.size = CV_PDS_REAL_64BIT; break;
case 10: value.s.size = CV_PDS_REAL_80BIT; break;
}
} else if ( size <= 8 ) {
if ( sym->mem_type & MT_SIGNED )
value.s.type = CV_PDT_SIGNED_INTEGRAL;
else
value.s.type = CV_PDT_UNSIGNED_INTEGRAL;
switch ( size ) {
case 1: value.s.size = CV_PDS_INTEGRAL_1BYTE; break;
case 2: value.s.size = CV_PDS_INTEGRAL_2BYTE; break;
case 4: value.s.size = CV_PDS_INTEGRAL_4BYTE; break;
case 8: value.s.size = CV_PDS_INTEGRAL_8BYTE; break;
case 6: /* v2.11: added ( FWORD ) */
value.s.type = CV_PDT_SPECIAL;
value.s.size = CV_PDS_SPECIAL_VOID;
value.s.mode = CV_PDM_FAR32PTR;
break;
}
} else { /* v2.11: branch added */
/* problem: there's no integral size > 8 bytes.
* Masm v8+ sets 79h (=?) for 16-byte and 3h (=void) for 32-byte.
* jwasm sets uint64, which allows to view at least
* the lower 8 bytes.
*/
value.s.type = CV_PDT_REAL_INT_VALUE;
value.s.size = CV_PDS_REAL_INT_UINT64;
}
} else {
switch ( sym->mem_type ) {
//case MT_ABS: break; /* v2.07: MT_ABS obsolete */
case MT_PTR:
/* v2.10 */
value.s.size = CV_PDS_SPECIAL_VOID;
value.s.type = CV_PDT_SPECIAL;
switch ( sym->Ofssize ) {
case USE16:
value.s.mode = ( sym->isfar ? CV_PDM_FARPTR : CV_PDM_NEARPTR );
break;
case USE32:
value.s.mode = ( sym->isfar ? CV_PDM_FAR32PTR : CV_PDM_NEAR32PTR );
break;
#if AMD64_SUPPORT
case USE64:
value.s.mode = CV_PDM_NEAR64PTR;
break;
#endif
}
break;
case MT_BITS:
if ( sym->cvtyperef )
return( sym->cvtyperef );
break;
case MT_NEAR: value.s.mode = CV_PDM_NEARPTR; break;
case MT_FAR: value.s.mode = CV_PDM_FARPTR; break;
case MT_TYPE:
for ( sym = sym->type; sym->type; sym = sym->type );
if ( sym->cvtyperef )
return( sym->cvtyperef );
DebugMsg(( "GetTypeRef, MT_TYPE: sym=%s state=%X memt=%X\n", sym->name, sym->state, sym->mem_type ));
return( GetTyperef( sym, Ofssize ) );
break;
}
}
return( value.uvalue );
}
/* calc size of a codeview item in symbols segment */
static uint_16 GetCVStructLen( struct asym *sym, uint_8 Ofssize )
/***************************************************************/
{
uint_16 len;
switch ( sym->state ) {
case SYM_TYPE:
len = sizeof( struct cv_symrec_udt );
break;
default:
if ( sym->isproc && Options.debug_ext >= CVEX_REDUCED ) {
len = ( Ofssize == USE16 ? sizeof( struct cv_symrec_lproc16 ) : sizeof( struct cv_symrec_lproc32 ) );
} else if ( sym->mem_type == MT_NEAR || sym->mem_type == MT_FAR ) {
len = ( Ofssize == USE16 ? sizeof( struct cv_symrec_label16 ) : sizeof( struct cv_symrec_label32 ) );
#if EQUATESYMS
} else if ( sym->isequate ) {
len = sizeof( struct cv_symrec_constant ) + ( sym->value >= LF_NUMERIC ? 2 : 0 );
#endif
} else {
len = ( Ofssize == USE16 ? sizeof( struct cv_symrec_ldata16 ) : sizeof( struct cv_symrec_ldata32 ) );
}
}
return( len );
}
/* 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 )
static void PadBytes( uint_8 *curr, uint_8 *base )
/************************************************/
{
static const char padtab[] = { LF_PAD1, LF_PAD2, LF_PAD3 };
while( ( curr - base ) & 3 )
*curr++ = padtab[3-((curr - base) & 3)];
}
/* write a bitfield to $$TYPES */
static void cv_write_bitfield( struct dbgcv *cv, struct dsym *type, struct asym *sym )
/************************************************************************************/
{
cv->pt = checkflush( cv->types, cv->pt, sizeof( struct cv_typerec_bitfield ), cv->param );
sym->cvtyperef = cv->currtype++;
cv->pt_bf->tr.size = sizeof( struct cv_typerec_bitfield ) - sizeof(uint_16);
cv->pt_bf->tr.leaf = LF_BITFIELD;
cv->pt_bf->length = sym->total_size;
cv->pt_bf->position = sym->offset;
cv->pt_bf->type = GetTyperef( (struct asym *)type, USE16 );
cv->pt += sizeof( struct cv_typerec_bitfield );
return;
}
#ifdef DEBUG_OUT
#define GetPos(x,y) (x->e.seginfo->current_loc + (y - x->e.seginfo->CodeBuffer ))
#endif
static void cv_write_array_type( struct dbgcv *cv, struct asym *sym, uint_16 elemtype, uint_8 Ofssize )
/*****************************************************************************************************/
{
uint_8 *tmp;
int typelen;
int size;
typelen = ( sym->total_size >= LF_NUMERIC ? sizeof( uint_32 ) : 0 );
size = ( sizeof( struct cv_typerec_array ) + 2 + typelen + 1 + 3 ) & ~3;
cv->pt = checkflush( cv->types, cv->pt, size, cv->param );
cv->pt_ar->tr.size = size - sizeof(uint_16);
cv->pt_ar->tr.leaf = LF_ARRAY;
cv->pt_ar->elemtype = ( elemtype ? elemtype : GetTyperef( sym, Ofssize ) );
cv->pt_ar->idxtype = cv_idx_type.uvalue; /* ok? */
tmp = cv->pt + sizeof( struct cv_typerec_array );
if ( typelen ) {
cv->pt_ar->length = LF_ULONG;
*(uint_32 *)tmp = sym->total_size;
tmp += sizeof( uint_32 );
} else {
cv->pt_ar->length = sym->total_size;
}
*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 cv_typeref cv_write_ptr_type( struct dbgcv *cv, struct asym *sym )
/************************************************************************/
{
int size = ( sizeof( struct cv_typerec_pointer ) + sizeof( uint_32 ) );
/* 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->tr.size = size - sizeof(uint_16);
cv->pt_ptr->tr.leaf = LF_POINTER;
if ( sym->Ofssize == USE16 ) {
cv->pt_ptr->attribute = ( sym->isfar ? CV_TYPE_PTRTYPE_FAR : CV_TYPE_PTRTYPE_NEAR );
} else {
cv->pt_ptr->attribute = ( sym->isfar ? CV_TYPE_PTRTYPE_FAR32 : CV_TYPE_PTRTYPE_NEAR32 );
}
/* if indirection is > 1, define an untyped pointer - to be improved */
if ( sym->is_ptr > 1 ) {
cv->pt_ptr->type = GetTyperef( sym, sym->Ofssize );
} else if ( sym->target_type ) {
/* the target's typeref must have been set here */
if ( sym->target_type->cvtyperef )
cv->pt_ptr->type = sym->target_type->cvtyperef;
else
cv->pt_ptr->type = GetTyperef( sym, sym->Ofssize );
} else { /* pointer to simple type */
enum memtype tmpmt = sym->mem_type; /* the target type is tmp. copied to mem_type */
sym->mem_type = sym->ptr_memtype; /* thus GetTyperef() can be used */
cv->pt_ptr->type = GetTyperef( sym, sym->Ofssize );
sym->mem_type = tmpmt;
}
*(uint_32 *)( cv->pt + sizeof( struct cv_typerec_pointer ) ) = 0; /* variant */
DebugMsg(( "%u cv_write_ptr_type(%Xh, typeref=%X ): name=%s [memt=%X ptr_memt=%X target_type=%s] reftype=%X\n",
cv->level, GetPos(cv->types, cv->pt), cv->currtype, sym->name, sym->mem_type, sym->ptr_memtype, sym->target_type ? sym->target_type->name : "NULL", cv->pt_ptr->type ));
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;
cc->cnt++;
offset = ( type->sym.typekind == TYPE_RECORD ? 0 : mbr->offset + cc->ofs );
numsize = ( offset >= LF_NUMERIC ? sizeof( uint_32 ) : 0 );
cc->size += ( sizeof( struct cv_typerec_member ) + 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 );
}
//DebugMsg(( "%u cv_cntproc(%Xh, %u): struct=%s MEMBER=%s [memt=%X type=%s]\n", cv->level, GetPos(cv->types, cv->pt), cc->cnt++, type->sym.name, mbr->name, mbr->mem_type, mbr->type ? mbr->type->name : "NULL" ));
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;
int typelen;
int size;
uint_8 *tmp;
offset = ( type->sym.typekind == TYPE_RECORD ? 0 : mbr->offset + cc->ofs );
typelen = ( offset >= LF_NUMERIC ? sizeof( uint_32 ) : 0 );
size = ( sizeof( struct cv_typerec_member ) + typelen + 1 + mbr->name_size + 3 ) & ~3;
cv->pt = checkflush( cv->types, cv->pt, size, cv->param );
cv->pt_mbr->leaf = LF_MEMBER;
if ( mbr->isarray ) {
cv->pt_mbr->type = mbr->ext_idx1;
mbr->ext_idx1 = 0; /* reset the temporarily used field */
} else
cv->pt_mbr->type = GetTyperef( mbr, USE16 );
cv->pt_mbr->attribute.access = CV_ATTR_ACC_PUBLIC;
cv->pt_mbr->attribute.mprop = CV_ATTR_MPR_VANILLA;
cv->pt_mbr->attribute.pseudo = 0;
cv->pt_mbr->attribute.noinherit = 0;
cv->pt_mbr->attribute.noconstruct = 0;
cv->pt_mbr->attribute.reserved = 0;
tmp = cv->pt + sizeof( struct cv_typerec_member );
if ( typelen == 0 ) {
cv->pt_mbr->offset = offset;
} else {
cv->pt_mbr->offset = LF_ULONG;
*(uint_32 *)tmp = offset;
tmp += sizeof( uint_32 );
}
DebugMsg(( "%u cv_memberproc(%Xh, %u): struct=%s MEMBER=%s [memt=%X], typeref=%X\n", cv->level, GetPos(cv->types, cv->pt), cc->cnt++, type->sym.name, mbr->name, mbr->mem_type, cv->pt_mbr->type ));
SetPrefixName( tmp, mbr->name, mbr->name_size );
PadBytes( tmp, cv->types->e.seginfo->CodeBuffer );
cv->pt += size;
return;
}
/* 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;
cv_typeref *ptr;
struct dsym *param;
size = sizeof( struct cv_typerec_procedure );
cv->pt = checkflush( cv->types, cv->pt, size, cv->param );
cv->pt_pr->tr.size = size - sizeof(uint_16);
cv->pt_pr->tr.leaf = LF_PROCEDURE;
cv->pt_pr->rvtype = cv_void.uvalue;
cv->pt_pr->call = 0;
cv->pt_pr->rsvd = 0;
cv->pt_pr->numparams = cnt;
cv->pt_pr->arglist = ++cv->currtype;
cv->pt += size;
size = sizeof( struct cv_typerec_arglist ) + cnt * sizeof( cv_typeref );
cv->pt = checkflush( cv->types, cv->pt, size, cv->param );
cv->pt_al->tr.size = size - sizeof(uint_16);
cv->pt_al->tr.leaf = LF_ARGLIST;
cv->pt_al->argcount = cnt;
ptr = (cv_typeref *)(cv->pt + sizeof( struct cv_typerec_arglist ) );
/* fixme: order might be wrong ( is "push" order ) */
for ( param = ((struct dsym *)sym)->e.procinfo->paralist; param; param = param->nextparam ) {
*ptr++ = param->sym.ext_idx1;
}
cv->pt += size;
cv->currtype++;
return;
}
/* 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;
uint_16 property;
struct cv_counters count;
/* v2.10: handle typedefs. when the types are enumerated,
* typedefs are ignored.
*/
if ( sym->typekind == TYPE_TYPEDEF ) {
//if ( sym->is_ptr ) {
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 1
if ( sym->ptr_memtype != MT_PROC && sym->target_type && sym->target_type->cvtyperef == 0 ) {
DebugMsg(( "%u cv_write_type(%Xh): TYPEDEF=%s target type=%s [kind=%u memt=%X] not defined yet\n",
cv->level, GetPos(cv->types, cv->pt), sym->name, sym->target_type->name, sym->target_type->typekind, sym->target_type->mem_type ));
//cv->level++;
//sym->cv_typeref = GetTyperef( sym, sym->Ofssize ); /* to avoid circular references! */
if ( cv->level == 0 ) /* avoid circles */
cv_write_type( cv, sym->target_type );
//cv->level--;
}
sym->cvtyperef = cv_write_ptr_type( cv, sym );
DebugMsg(( "%u cv_write_type(%Xh): TYPEDEF=%s typeref=%X\n", cv->level, GetPos(cv->types, cv->pt), sym->name, sym->cvtyperef ));
#else
sym->cv_typeref = cv->currtype++;
size = ( sizeof( struct cv_typerec_pointer ) + sizeof( uint_32 ) );
cv->pt = checkflush( cv->types, cv->pt, size );
cv->pt_ptr->tr.size = size - sizeof(uint_16);
cv->pt_ptr->tr.leaf = LF_POINTER;
if ( sym->Ofssize == USE16 ) {
cv->pt_ptr->attribute = ( sym->isfar ? CV_TYPE_POINTER_FAR : CV_TYPE_POINTER_NEAR );
} else {
cv->pt_ptr->attribute = ( sym->isfar ? CV_TYPE_POINTER_FAR32 : CV_TYPE_POINTER_NEAR32 );
}
cv->pt_ptr->pptype = cv_pvoid.s;
*(uint_32 *)( cv->pt + sizeof( struct cv_typerec_pointer ) ) = 0; /* variant */
DebugMsg(( "%u cv_write_type(%Xh, ref=%X): POINTER, attr=%X\n", cv->level, GetPos(cv->types, cv->pt), cv->currtype-1, cv->pt_ptr->attribute ));
cv->pt += size;
#endif
}
return;
} else if ( sym->typekind == TYPE_NONE ) {
DebugMsg(( "cv_write_type: %s has typekind=TYPE_NONE, ignored!\n", sym->name ));
return;
}
typelen = ( sym->total_size >= LF_NUMERIC ? sizeof( uint_32 ) : 0 );
property = ( cv->level ? CVTSP_ISNESTED : 0 );
/* 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:
DebugMsg(( "%u cv_write_type(%Xh, ref=%X): UNION=%s\n", cv->level, GetPos(cv->types, cv->pt), sym->cvtyperef, sym->name ));
size = ( sizeof( struct cv_typerec_union ) + typelen + 1 + namesize + 3 ) & ~3;
cv->pt = checkflush( cv->types, cv->pt, size, cv->param );
cv->pt_un->tr.size = size - sizeof(uint_16);
cv->pt_un->tr.leaf = LF_UNION;
cv->pt_un->count = count.cnt;
cv->pt_un->field = cv->currtype++;
cv->pt_un->property = property;
tmp = (uint_8 *)&cv->pt_un->length;
break;
case TYPE_RECORD:
property |= CVTSP_PACKED; /* is "packed" */
/* no break */
case TYPE_STRUCT:
DebugMsg(( "%u cv_write_type(%Xh, ref=%X): STRUCT=%s\n", cv->level, GetPos(cv->types, cv->pt), sym->cvtyperef, sym->name ));
size = ( sizeof( struct cv_typerec_structure ) + typelen + 1 + namesize + 3 ) & ~3;
cv->pt = checkflush( cv->types, cv->pt, size, cv->param );
cv->pt_st->tr.size = size - sizeof(uint_16);
cv->pt_st->tr.leaf = LF_STRUCTURE;
cv->pt_st->count = count.cnt;
cv->pt_st->field = cv->currtype++;
cv->pt_st->property = property;
cv->pt_st->dList = 0;
cv->pt_st->vshape = 0;
tmp = (uint_8 *)&cv->pt_st->length;
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 );
}
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( struct cv_typerec_fieldlist ), cv->param );
size = sizeof( struct cv_typerec_fieldlist) + count.size;
cv->pt_fl->tr.size = size - sizeof(uint_16);
cv->pt_fl->tr.leaf = LF_FIELDLIST;
DebugMsg(( "%u cv_write_type(%Xh, ref=%X): FIELDLIST, size=%u\n", cv->level, GetPos(cv->types, cv->pt), cv->currtype-1, size ));
cv->pt += sizeof( struct cv_typerec_fieldlist );
/* add the struct's members to the fieldlist. */
count.ofs = 0;
#ifdef DEBUG_OUT
count.cnt = 0;
#endif
cv_enum_fields( type, cv_memberproc, cv, &count );
return;
}
/* get register values for S_REGISTER */
static 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 );
}
#if AMD64_SUPPORT
/*
* 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 };
static uint_16 cv_get_x64_regno( uint_16 regno )
/**********************************************/
{
if ( regno >= T_RAX && regno <= T_RDI )
return( reg64[ regno - T_RAX ] + CV_REG_AMD64_START64 );
if ( regno >= T_R8 && regno <= T_R15 )
return( regno - T_R8 + CV_REG_AMD64_START64 + 8 );
/* it's a 32-bit register r8d-r15d */
return( regno - T_R8D + CV_REG_AMD64_START32 );
}
#endif
/* 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;
int cnt[2];
struct dsym *locals[2];
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.
*/
cv->ps_udt->sr.size = sizeof( struct cv_symrec_udt ) - sizeof(uint_16) + 1 + sym->name_size;
cv->ps_udt->sr.type = S_UDT;
/* v2.10: pointer typedefs will now have a cv_typeref */
//if ( sym->typekind != TYPE_TYPEDEF ) {
if ( sym->cvtyperef ) {
cv->ps_udt->type = sym->cvtyperef;
} else {
cv->ps_udt->type = GetTyperef( sym, Ofssize );
}
/* Some typedefs won't get a valid type (<name> TYPEDEF PROTO ...).
* In such cases just skip the type!
*/
if ( cv->ps_udt->type == 0 )
return;
DebugMsg(( "cv_write_symbol(%X): TYPE=%s typeref=%Xh\n", GetPos(cv->symbols, cv->ps), sym->name, cv->ps_udt->type ));
cv->ps += len;
SetPrefixName( cv->ps, sym->name, sym->name_size );
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++ ) {
cnt[i] = 0;
for ( lcl = locals[i]; lcl; lcl = lcl->nextparam ) {
cv_typeref typeref;
cnt[i]++;
typeref = ( lcl->sym.mem_type == MT_PTR ? cv_write_ptr_type( cv, &lcl->sym ) : GetTyperef( &lcl->sym, Ofssize ) );
if ( lcl->sym.isarray ) {
cv_write_array_type( cv, &lcl->sym, typeref, Ofssize );
typeref = cv->currtype - 1;
}
lcl->sym.ext_idx1 = typeref;
}
}
DebugMsg(( "cv_write_symbol(%X): PROC=%s\n", GetPos(cv->symbols, cv->ps), sym->name ));
if ( Ofssize == USE16 ) {
cv->ps_p16->sr.size = sizeof( struct cv_symrec_lproc16 ) - sizeof(uint_16) + 1 + sym->name_size;
cv->ps_p16->sr.type = (sym->ispublic ? S_GPROC16 : S_LPROC16);
cv->ps_p16->pParent = 0; /* filled by CVPACK */
cv->ps_p16->pEnd = 0; /* filled by CVPACK */
cv->ps_p16->pNext = 0; /* filled by CVPACK */
cv->ps_p16->proc_length = sym->total_size;
cv->ps_p16->debug_start = ((struct dsym *)sym)->e.procinfo->size_prolog;
cv->ps_p16->debug_end = sym->total_size;
cv->ps_p16->offset = 0;
cv->ps_p16->segment = 0;
cv->ps_p16->proctype = cv->currtype; /* typeref LF_PROCEDURE */
cv->ps_p16->flags = ( sym->mem_type == MT_FAR ? CV_PROCF_FAR : 0 );
rlctype = FIX_PTR16;
ofs = offsetof( struct cv_symrec_lproc16, offset );
} else {
cv->ps_p32->sr.size = sizeof( struct cv_symrec_lproc32 ) - sizeof(uint_16) + 1 + sym->name_size;
cv->ps_p32->sr.type = (sym->ispublic ? S_GPROC32 : S_LPROC32 );
cv->ps_p32->pParent = 0; /* filled by CVPACK */
cv->ps_p32->pEnd = 0; /* filled by CVPACK */
cv->ps_p32->pNext = 0; /* filled by CVPACK */
cv->ps_p32->proc_length = sym->total_size;
cv->ps_p32->debug_start = ((struct dsym *)sym)->e.procinfo->size_prolog;
cv->ps_p32->debug_end = sym->total_size;
cv->ps_p32->offset = 0;
cv->ps_p32->segment = 0;
cv->ps_p32->proctype = cv->currtype; /* typeref LF_PROCEDURE */
#if STACKBASESUPP
cv->ps_p32->flags = ( ( sym->mem_type == MT_FAR ? CV_PROCF_FAR : 0 ) | ( proc->e.procinfo->fpo ? CV_PROCF_FPO : 0 ) );
#else
cv->ps_p32->flags = ( sym->mem_type == MT_FAR ? CV_PROCF_FAR : 0 );
#endif
rlctype = FIX_PTR32;
ofs = offsetof( struct cv_symrec_lproc32, offset );
}
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->sr.size = sizeof( struct cv_symrec_label16 ) - sizeof(uint_16) + 1 + sym->name_size;
cv->ps_l16->sr.type = S_LABEL16;
cv->ps_l16->offset = 0;
cv->ps_l16->segment = 0;
cv->ps_l16->flags = ( sym->mem_type == MT_FAR ? CV_PROCF_FAR : 0 );
rlctype = FIX_PTR16;
ofs = offsetof( struct cv_symrec_label16, offset );
DebugMsg(( "cv_write_symbol(%X): LABEL16=%s\n", GetPos(cv->symbols,cv->ps), sym->name ));
} else {
cv->ps_l32->sr.size = sizeof( struct cv_symrec_label32 ) - sizeof(uint_16) + 1 + sym->name_size;
cv->ps_l32->sr.type = S_LABEL32;
cv->ps_l32->offset = 0;
cv->ps_l32->segment = 0;
cv->ps_l32->flags = ( sym->mem_type == MT_FAR ? CV_PROCF_FAR : 0 );
rlctype = FIX_PTR32;
ofs = offsetof( struct cv_symrec_label32, offset );
DebugMsg(( "cv_write_symbol(%X): LABEL32=%s\n", GetPos(cv->symbols,cv->ps), sym->name ));
}
#if EQUATESYMS
} else if ( sym->isequate ) {
cv->ps_con->sr.size = len - sizeof(uint_16) + 1 + sym->name_size;
cv->ps_con->sr.type = S_CONSTANT;
cv->ps_con->type = cv_abs_type.uvalue;
if ( sym->value >= LF_NUMERIC ) {
uint_8 *tmp;
cv->ps_con->value = LF_ULONG;
tmp = (uint_8 *)&cv->ps_con->value;
*(uint_32 *)tmp = sym->value;
} else {
cv->ps_con->value = sym->value;
}
cv->ps += len;
SetPrefixName( cv->ps, sym->name, sym->name_size );
return;
#endif
} else {
/* v2.10: set S_GDATA[16|32] if symbol is public */
cv_typeref typeref;
if ( sym->isarray ) {
typeref = cv->currtype;
cv_write_array_type( cv, sym, 0, Ofssize );
} else
typeref = GetTyperef( sym, Ofssize );
if ( Ofssize == USE16 ) {
cv->ps_d16->sr.size = sizeof( struct cv_symrec_ldata16 ) - sizeof(uint_16) + 1 + sym->name_size;
cv->ps_d16->sr.type = (sym->ispublic ? S_GDATA16 : S_LDATA16 );
cv->ps_d16->offset = 0;
cv->ps_d16->segment = 0;
cv->ps_d16->type = typeref;
rlctype = FIX_PTR16;
ofs = offsetof( struct cv_symrec_ldata16, offset );
DebugMsg(( "cv_write_symbol(%X): INTERN16=%s typeref=%Xh\n", GetPos(cv->symbols,cv->ps), sym->name, cv->ps_d16->type ));
} else {
cv->ps_d32->sr.size = sizeof( struct cv_symrec_ldata32 ) - sizeof(uint_16) + 1 + sym->name_size;
#if CVOSUPP
if ( ( ModuleInfo.cv_opt & CVO_STATICTLS ) && ((struct dsym *)sym->segment)->e.seginfo->clsym &&
strcmp( ((struct dsym *)sym->segment)->e.seginfo->clsym->name, "TLS" ) == 0 )
cv->ps_d32->sr.type = (sym->ispublic ? S_GTHREAD32 : S_LTHREAD32 );
else
#endif
cv->ps_d32->sr.type = (sym->ispublic ? S_GDATA32 : S_LDATA32 );
cv->ps_d32->offset = 0;
cv->ps_d32->segment = 0;
cv->ps_d32->type = typeref;
rlctype = FIX_PTR32;
ofs = offsetof( struct cv_symrec_ldata32, offset );
DebugMsg(( "cv_write_symbol(%X): INTERN32=%s typeref=%Xh\n", GetPos(cv->symbols,cv->ps), sym->name, cv->ps_d16->type ));
}
}
cv->ps += ofs;
cv->symbols->e.seginfo->current_loc = cv->symbols->e.seginfo->start_loc + ( cv->ps - cv->symbols->e.seginfo->CodeBuffer );
#if COFF_SUPPORT
/* v2.10: also handle FIX_PTR16 for COFF */
//if ( rlctype == FIX_PTR32 && Options.output_format == OFORMAT_COFF ) {
if ( Options.output_format == OFORMAT_COFF ) {
/* COFF has no "far" fixups. Instead Masm creates a
* section-relative fixup + a section fixup.
*/
fixup = CreateFixup( sym, FIX_OFF32_SECREL, OPTJ_NONE );
fixup->locofs = cv->symbols->e.seginfo->current_loc;
store_fixup( fixup, cv->symbols, (int_32 *)cv->ps );
fixup = CreateFixup( sym, FIX_SEG, OPTJ_NONE );
//fixup->locofs += sizeof( int_32 );
fixup->locofs = cv->symbols->e.seginfo->current_loc + ( rlctype == FIX_PTR32 ? sizeof( int_32 ) : sizeof ( int_16 ) );
store_fixup( fixup, cv->symbols, (int_32 *)cv->ps );
} else {
#endif
fixup = CreateFixup( sym, rlctype, OPTJ_NONE );
fixup->locofs = cv->symbols->e.seginfo->current_loc;
/* todo: for OMF, delay fixup store until checkflush has been called! */
store_fixup( fixup, cv->symbols, (int_32 *)cv->ps );
#if COFF_SUPPORT
}
#endif
cv->ps += len - ofs;
SetPrefixName( cv->ps, sym->name, sym->name_size );
/* for PROCs, scan parameters and locals.
* to mark the block's end, write an ENDBLK item.
*/
if ( sym->isproc && Options.debug_ext >= CVEX_REDUCED ) { /* v2.10: no locals for -Zi0 */
/* scan local symbols again */
for ( i = 0; i < 2 ; i++ ) {
for ( lcl = locals[i]; lcl; lcl = lcl->nextparam ) {
/* FASTCALL register argument? */
if ( lcl->sym.state == SYM_TMACRO ) {
len = sizeof( struct cv_symrec_register );
cv->ps = checkflush( cv->symbols, cv->ps, 1 + lcl->sym.name_size + len, cv->param );
cv->ps_reg->sr.size = sizeof( struct cv_symrec_register ) - sizeof(uint_16) + 1 + lcl->sym.name_size;
cv->ps_reg->sr.type = S_REGISTER;
cv->ps_reg->type = lcl->sym.ext_idx1;
cv->ps_reg->registr = cv_get_register( &lcl->sym );
} else if ( Ofssize == USE16 ) {
len = sizeof( struct cv_symrec_bprel16 );
cv->ps = checkflush( cv->symbols, cv->ps, 1 + lcl->sym.name_size + len, cv->param );
cv->ps_br16->sr.size = sizeof( struct cv_symrec_bprel16 ) - sizeof(uint_16) + 1 + lcl->sym.name_size;
cv->ps_br16->sr.type = S_BPREL16;
cv->ps_br16->offset = lcl->sym.offset;
cv->ps_br16->type = lcl->sym.ext_idx1;
DebugMsg(( "cv_write_symbol(%X): proc=%s, S_BPREL16, var=%s [memt=%X typeref=%X]\n",
GetPos(cv->symbols,cv->ps), proc->sym.name, lcl->sym.name, lcl->sym.mem_type, cv->ps_br16->type ));
} else {
#if STACKBASESUPP || AMD64_SUPPORT
/* v2.11: use S_REGREL if 64-bit or frame reg != [E|BP */
if (
#if AMD64_SUPPORT
Ofssize == USE64
#if STACKBASESUPP
|| ( GetRegNo( proc->e.procinfo->basereg ) != 5 )
#endif
#else
GetRegNo( proc->e.procinfo->basereg ) != 5
#endif
) {
len = sizeof( struct cv_symrec_regrel32 );
cv->ps = checkflush( cv->symbols, cv->ps, 1 + lcl->sym.name_size + len, cv->param );
cv->ps_rr32->sr.size = sizeof( struct cv_symrec_regrel32 ) - sizeof(uint_16) + 1 + lcl->sym.name_size;
cv->ps_rr32->sr.type = S_REGREL32;
cv->ps_rr32->offset = lcl->sym.offset ;
cv->ps_rr32->type = lcl->sym.ext_idx1;
#if AMD64_SUPPORT
//if W64F_HABRAN recalculate parameters positions
if (ModuleInfo.win64_flags & W64F_SMART){
if (lcl->sym.isparam){
int cnt = proc->e.procinfo->pushed_reg;
cnt = cnt * 8;
cnt += lcl->sym.offset + proc->e.procinfo->localsize + proc->e.procinfo->xmmsize; //pointing to RSP
if (proc->sym.langtype == LANG_VECTORCALL)
cnt += proc->e.procinfo->vsize; //pointing abowe RSP to the shadow space off RCX RDX R8 R9
//else
cnt -= 8;
if ((cnt & 7) != 0) cnt = (cnt + 7)&(-8);
cv->ps_rr32->offset = cnt;
}
}
/* x64 register numbers are different */
if ( SpecialTable[ proc->e.procinfo->basereg ].cpu == P_64 )
cv->ps_rr32->reg = cv_get_x64_regno( proc->e.procinfo->basereg );
else
#endif
cv->ps_rr32->reg = GetRegNo( proc->e.procinfo->basereg ) + CV_REG_START32;
DebugMsg(( "cv_write_symbol(%X): proc=%s, S_REGREL32, var=%s [memt=%X typeref=%X]\n",
GetPos(cv->symbols,cv->ps), proc->sym.name, lcl->sym.name, lcl->sym.mem_type, cv->ps_rr32->type ));
} else {
#endif
len = sizeof( struct cv_symrec_bprel32 );
cv->ps = checkflush( cv->symbols, cv->ps, 1 + lcl->sym.name_size + len, cv->param );
cv->ps_br32->sr.size = sizeof( struct cv_symrec_bprel32 ) - sizeof(uint_16) + 1 + lcl->sym.name_size;
cv->ps_br32->sr.type = S_BPREL32;
cv->ps_br32->offset = lcl->sym.offset;
cv->ps_br32->type = lcl->sym.ext_idx1;
DebugMsg(( "cv_write_symbol(%X): proc=%s, S_BPREL32, var=%s [memt=%X typeref=%X]\n",
GetPos(cv->symbols,cv->ps), proc->sym.name, lcl->sym.name, lcl->sym.mem_type, cv->ps_br32->type ));
#if STACKBASESUPP || AMD64_SUPPORT
}
#endif
}
lcl->sym.ext_idx1 = 0; /* to be safe, clear the temp. used field */
cv->ps += len;
SetPrefixName( cv->ps, lcl->sym.name, lcl->sym.name_size );
}
}
cv->ps = checkflush( cv->symbols, cv->ps, sizeof( struct cv_symrec_endblk ), cv->param );
cv->ps_eb->sr.size = sizeof( struct cv_symrec_endblk ) - sizeof(uint_16);
cv->ps_eb->sr.type = S_ENDBLK;
cv->ps += sizeof( struct cv_symrec_endblk );
}
return;
}
/* option -Zi: write debug symbols and types
* - symbols: segment $$SYMBOLS (OMF) or .debug$S (COFF)
* - types: segment $$TYPES (OMF) or .debug$T (COFF)
* field Options.debug_symbols contains the format version
* which is to be generated (CV4_, CV5_ or CV8_SIGNATURE)
*/
void cv_write_debug_tables( struct dsym *symbols, struct dsym *types, void *pv )
/******************************************************************************/
{
struct asym *sym;
int i;
int len;
char *objname;
struct dbgcv cv;
DebugMsg(( "cv_write_debug_tables enter\n"));
/**/myassert( types && symbols && types->sym.state == SYM_SEG && symbols->sym.state == SYM_SEG );