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newman.d
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newman.d
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/**
* Compiler implementation of the
* $(LINK2 http://www.dlang.org, D programming language).
*
* Copyright: Copyright (C) 1992-1998 by Symantec
* Copyright (C) 2000-2019 by The D Language Foundation, All Rights Reserved
* Authors: $(LINK2 http://www.digitalmars.com, Walter Bright)
* License: $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
* Source: $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/backend/newman.c, backend/newman.c)
*/
module dmd.backend.newman;
version (SCPP)
{
version = COMPILE;
version = SCPPorMARS;
version = SCPPorHTOD;
}
version (HTOD)
{
version = COMPILE;
version = SCPPorMARS;
version = SCPPorHTOD;
}
version (MARS)
{
version = COMPILE;
version = SCPPorMARS;
}
version (COMPILE)
{
import core.stdc.ctype;
import core.stdc.stdio;
import core.stdc.stdlib;
import core.stdc.string;
import dmd.backend.cc;
import dmd.backend.cdef;
import dmd.backend.code;
import dmd.backend.code_x86;
import dmd.backend.mem;
import dmd.backend.el;
import dmd.backend.exh;
import dmd.backend.global;
import dmd.backend.obj;
import dmd.backend.oper;
import dmd.backend.rtlsym;
import dmd.backend.ty;
import dmd.backend.type;
import dmd.backend.xmm;
version (SCPPorHTOD)
{
import cpp;
import dtoken;
import msgs2;
import parser;
import scopeh;
}
version (MARS)
struct token_t;
extern (C++):
bool NEWTEMPMANGLE() { return !(config.flags4 & CFG4oldtmangle); } // do new template mangling
enum BUFIDMAX = 2 * IDMAX;
struct Mangle
{
char[BUFIDMAX + 2] buf;
char *np; // index into buf[]
// Used for compression of redundant znames
const(char)*[10] zname;
int znamei;
type*[10] arg; // argument_replicator
int argi; // number used in arg[]
}
private __gshared
{
Mangle mangle;
int mangle_inuse;
}
struct MangleInuse
{
static if (0)
{
this(int i)
{
assert(mangle_inuse == 0);
mangle_inuse++;
}
~this()
{
assert(mangle_inuse == 1);
mangle_inuse--;
}
}
}
/* Names for special variables */
__gshared
{
char[3] cpp_name_new = "?2";
char[3] cpp_name_delete = "?3";
char[4] cpp_name_anew = "?_P";
char[4] cpp_name_adelete = "?_Q";
char[3] cpp_name_ct = "?0";
char[3] cpp_name_dt = "?1";
char[3] cpp_name_as = "?4";
char[4] cpp_name_vc = "?_H";
char[4] cpp_name_primdt = "?_D";
char[4] cpp_name_scaldeldt = "?_G";
char[4] cpp_name_priminv = "?_R";
}
/****************************
*/
version (MARS)
{
struct OPTABLE
{
ubyte tokn;
ubyte oper;
const(char)* string;
const(char)* pretty;
}
}
version (SCPPorHTOD)
{
__gshared OPTABLE[57] oparray = [
{ TKnew, OPnew, cpp_name_new.ptr, "new" },
{ TKdelete, OPdelete, cpp_name_delete.ptr,"del" },
{ TKadd, OPadd, "?H", "+" },
{ TKadd, OPuadd, "?H", "+" },
{ TKmin, OPmin, "?G", "-" },
{ TKmin, OPneg, "?G", "-" },
{ TKstar, OPmul, "?D", "*" },
{ TKstar, OPind, "?D", "*" },
{ TKdiv, OPdiv, "?K", "/" },
{ TKmod, OPmod, "?L", "%" },
{ TKxor, OPxor, "?T", "^" },
{ TKand, OPand, "?I", "&" },
{ TKand, OPaddr, "?I", "&" },
{ TKor, OPor, "?U", "|" },
{ TKcom, OPcom, "?S", "~" },
{ TKnot, OPnot, "?7", "!" },
{ TKeq, OPeq, cpp_name_as.ptr, "=" },
{ TKeq, OPstreq, "?4", "=" },
{ TKlt, OPlt, "?M", "<" },
{ TKgt, OPgt, "?O", ">" },
{ TKnew, OPanew, cpp_name_anew.ptr, "n[]" },
{ TKdelete, OPadelete, cpp_name_adelete.ptr,"d[]" },
{ TKunord, OPunord, "?_S", "!<>=" },
{ TKlg, OPlg, "?_T", "<>" },
{ TKleg, OPleg, "?_U", "<>=" },
{ TKule, OPule, "?_V", "!>" },
{ TKul, OPul, "?_W", "!>=" },
{ TKuge, OPuge, "?_X", "!<" },
{ TKug, OPug, "?_Y", "!<=" },
{ TKue, OPue, "?_Z", "!<>" },
{ TKaddass, OPaddass, "?Y", "+=" },
{ TKminass, OPminass, "?Z", "-=" },
{ TKmulass, OPmulass, "?X", "*=" },
{ TKdivass, OPdivass, "?_0", "/=" },
{ TKmodass, OPmodass, "?_1", "%=" },
{ TKxorass, OPxorass, "?_6", "^=" },
{ TKandass, OPandass, "?_4", "&=" },
{ TKorass, OPorass, "?_5", "|=" },
{ TKshl, OPshl, "?6", "<<" },
{ TKshr, OPshr, "?5", ">>" },
{ TKshrass, OPshrass, "?_2", ">>=" },
{ TKshlass, OPshlass, "?_3", "<<=" },
{ TKeqeq, OPeqeq, "?8", "==" },
{ TKne, OPne, "?9", "!=" },
{ TKle, OPle, "?N", "<=" },
{ TKge, OPge, "?P", ">=" },
{ TKandand, OPandand, "?V", "&&" },
{ TKoror, OPoror, "?W", "||" },
{ TKplpl, OPpostinc, "?E", "++" },
{ TKplpl, OPpreinc, "?E", "++" },
{ TKmimi, OPpostdec, "?F", "--" },
{ TKmimi, OPpredec, "?F", "--" },
{ TKlpar, OPcall, "?R", "()" },
{ TKlbra, OPbrack, "?A", "[]" },
{ TKarrow, OParrow, "?C", "->" },
{ TKcomma, OPcomma, "?Q", "," },
{ TKarrowstar, OParrowstar, "?J", "->*" },
];
}
/****************************************
* Convert from identifier to operator
*/
version (SCPPorHTOD)
{
static if (0) //__GNUC__ // NOT DONE - FIX
{
char * unmangle_pt(const(char)** s)
{
return cast(char *)*s;
}
}
else
{
extern (C) char *unmangle_pt(const(char)**);
}
char *cpp_unmangleident(const(char)* p)
{
MangleInuse m;
//printf("cpp_unmangleident('%s')\n", p);
if (*p == '$') // if template name
{
L1:
const(char)* q = p;
char* s = unmangle_pt(&q);
if (s)
{ if (strlen(s) <= BUFIDMAX)
p = strcpy(mangle.buf.ptr, s);
free(s);
}
}
else if (*p == '?') // if operator name
{ int i;
if (NEWTEMPMANGLE && p[1] == '$') // if template name
goto L1;
for (i = 0; i < oparray.length; i++)
{ if (strcmp(p,oparray[i].string) == 0)
{ const(char)* s;
strcpy(mangle.buf.ptr, "operator ");
switch (oparray[i].oper)
{ case OPanew:
s = "new[]";
break;
case OPadelete:
s = "delete[]";
break;
case OPdelete:
s = "delete";
break;
default:
s = oparray[i].pretty.ptr;
break;
}
strcat(mangle.buf.ptr,s);
p = mangle.buf.ptr;
break;
}
}
}
//printf("-cpp_unmangleident() = '%s'\n", p);
return cast(char *)p;
}
}
/****************************************
* Find index in oparray[] for operator.
* Returns:
* index or -1 if not found
*/
version (SCPPorHTOD)
{
int cpp_opidx(int op)
{ int i;
for (i = 0; i < oparray.length; i++)
if (oparray[i].oper == op)
return i;
return -1;
}
}
/***************************************
* Find identifier string associated with operator.
* Returns:
* null if not found
*/
version (SCPPorHTOD)
{
char *cpp_opident(int op)
{ int i;
i = cpp_opidx(op);
return (i == -1) ? null : cast(char*)oparray[i].string;
}
}
/**********************************
* Convert from operator token to name.
* Output:
* *poper OPxxxx
* *pt set to type for user defined conversion
* Returns:
* pointer to corresponding name
*/
version (SCPPorHTOD)
{
char *cpp_operator(int *poper,type **pt)
{
int i;
type *typ_spec;
char *s;
*pt = null;
stoken(); /* skip over operator keyword */
for (i = 0; i < oparray.length; i++)
{ if (oparray[i].tokn == tok.TKval)
goto L1;
}
/* Look for type conversion */
if (type_specifier(&typ_spec))
{ type *t;
t = ptr_operator(typ_spec); // parse ptr-operator
fixdeclar(t);
type_free(typ_spec);
*pt = t;
return cpp_typetostring(t,cast(char*)"?B".ptr);
}
cpperr(EM_not_overloadable); // that token cannot be overloaded
s = cast(char*)"_".ptr;
goto L2;
L1:
s = cast(char*)oparray[i].string;
*poper = oparray[i].oper;
switch (*poper)
{ case OPcall:
if (stoken() != TKrpar)
synerr(EM_rpar); /* ')' expected */
break;
case OPbrack:
if (stoken() != TKrbra)
synerr(EM_rbra); /* ']' expected */
break;
case OPnew:
if (stoken() != TKlbra)
goto Lret;
*poper = OPanew; // operator new[]
s = cpp_name_anew.ptr;
goto L3;
case OPdelete:
if (stoken() != TKlbra)
goto Lret;
*poper = OPadelete; // operator delete[]
s = cpp_name_adelete.ptr;
L3:
if (stoken() != TKrbra)
synerr(EM_rbra); // ']' expected
if (!(config.flags4 & CFG4anew))
{ cpperr(EM_enable_anew); // throw -Aa to support this
config.flags4 |= CFG4anew;
}
break;
default:
break;
}
L2:
stoken();
Lret:
return s;
}
/******************************************
* Alternate version that works on a list of token's.
* Input:
* to list of tokens
* Output:
* *pcastoverload 1 if user defined type conversion
*/
char *cpp_operator2(token_t *to, int *pcastoverload)
{
int i;
char *s;
token_t *tn;
int oper;
*pcastoverload = 0;
if (!to || !to.TKnext)
return null;
for (i = 0; i < oparray.length; i++)
{
//printf("[%d] %d, %d\n", i, oparray[i].tokn, tok.TKval);
if (oparray[i].tokn == to.TKval)
goto L1;
}
//printf("cpp_operator2(): castoverload\n");
*pcastoverload = 1;
return null;
L1:
tn = to.TKnext;
s = cast(char*)oparray[i].string;
oper = oparray[i].oper;
switch (oper)
{ case OPcall:
if (tn.TKval != TKrpar)
synerr(EM_rpar); // ')' expected
break;
case OPbrack:
if (tn.TKval != TKrbra)
synerr(EM_rbra); // ']' expected
break;
case OPnew:
if (tn.TKval != TKlbra)
break;
oper = OPanew; // operator new[]
s = cpp_name_anew.ptr;
goto L3;
case OPdelete:
if (tn.TKval != TKlbra)
break;
oper = OPadelete; // operator delete[]
s = cpp_name_adelete.ptr;
L3:
if (tn.TKval != TKrbra)
synerr(EM_rbra); // ']' expected
if (!(config.flags4 & CFG4anew))
{ cpperr(EM_enable_anew); // throw -Aa to support this
config.flags4 |= CFG4anew;
}
break;
default:
break;
}
Lret:
return s;
}
}
/***********************************
* Generate and return a pointer to a string constructed from
* the type, appended to the prefix.
* Since these generated strings determine the uniqueness of names,
* they are also used to determine if two types are the same.
* Returns:
* pointer to static name[]
*/
char *cpp_typetostring(type *t,char *prefix)
{ int i;
if (prefix)
{ strcpy(mangle.buf.ptr,prefix);
i = cast(int)strlen(prefix);
}
else
i = 0;
//dbg_printf("cpp_typetostring:\n");
//type_print(t);
MangleInuse m;
mangle.znamei = 0;
mangle.argi = 0;
mangle.np = mangle.buf.ptr + i;
mangle.buf[BUFIDMAX + 1] = 0x55;
cpp_data_type(t);
*mangle.np = 0; // 0-terminate mangle.buf[]
//dbg_printf("cpp_typetostring: '%s'\n", mangle.buf);
assert(strlen(mangle.buf.ptr) <= BUFIDMAX);
assert(mangle.buf[BUFIDMAX + 1] == 0x55);
return mangle.buf.ptr;
}
version (MARS) { } else
{
/********************************
* 'Mangle' a name for output.
* Returns:
* pointer to mangled name (a static buffer)
*/
char *cpp_mangle(Symbol *s)
{
symbol_debug(s);
//printf("cpp_mangle(s = %p, '%s')\n", s, s.Sident);
//type_print(s.Stype);
version (SCPPorHTOD)
{
if (!CPP)
return symbol_ident(s);
}
if (type_mangle(s.Stype) != mTYman_cpp)
return symbol_ident(s);
else
{
MangleInuse m;
mangle.znamei = 0;
mangle.argi = 0;
mangle.np = mangle.buf.ptr;
mangle.buf[BUFIDMAX + 1] = 0x55;
cpp_decorated_name(s);
*mangle.np = 0; // 0-terminate cpp_name[]
//dbg_printf("cpp_mangle() = '%s'\n", mangle.buf);
assert(strlen(mangle.buf.ptr) <= BUFIDMAX);
assert(mangle.buf[BUFIDMAX + 1] == 0x55);
return mangle.buf.ptr;
}
}
}
///////////////////////////////////////////////////////
/*********************************
* Add char into cpp_name[].
*/
private void CHAR(int c)
{
if (mangle.np < &mangle.buf[BUFIDMAX])
*mangle.np++ = cast(char)c;
}
/*********************************
* Add char into cpp_name[].
*/
private void STR(const(char)* p)
{
size_t len;
len = strlen(p);
if (mangle.np + len <= &mangle.buf[BUFIDMAX])
{ memcpy(mangle.np,p,len);
mangle.np += len;
}
else
for (; *p; p++)
CHAR(*p);
}
/***********************************
* Convert const volatile combinations into 0..3
*/
private int cpp_cvidx(tym_t ty)
{ int i;
i = (ty & mTYconst) ? 1 : 0;
i |= (ty & mTYvolatile) ? 2 : 0;
return i;
}
/******************************
* Turn protection into 0..2
*/
private int cpp_protection(Symbol *s)
{ int i;
switch (s.Sflags & SFLpmask)
{ case SFLprivate: i = 0; break;
case SFLprotected: i = 1; break;
case SFLpublic: i = 2; break;
default:
symbol_print(s);
assert(0);
}
return i;
}
/***********************************
* Create mangled name for template instantiation.
*/
version (SCPPorHTOD)
{
char *template_mangle(Symbol *s,param_t *arglist)
{
/* mangling ::= '$' template_name { type | expr }
type ::= "T" mangled type
expr ::= integer | string | address | float | double | long_double
integer ::= "I" dimension
string ::= "S" string
address ::= "R" zname
float ::= "F" hex_digits
double ::= "D" hex_digits
long_double ::= "L" hex_digits
*/
param_t *p;
assert(s);
symbol_debug(s);
//assert(s.Sclass == SCtemplate);
//printf("\ntemplate_mangle(s = '%s', arglist = %p)\n", s.Sident, arglist);
//arglist.print_list();
MangleInuse m;
mangle.znamei = 0;
mangle.argi = 0;
mangle.np = mangle.buf.ptr;
mangle.buf[BUFIDMAX + 1] = 0x55;
if (NEWTEMPMANGLE)
STR("?$");
else
CHAR('$');
// BUG: this is for templates nested inside class scopes.
// Need to check if it creates names that are properly unmanglable.
cpp_zname(s.Sident.ptr);
if (s.Sscope)
cpp_scope(s.Sscope);
for (p = arglist; p; p = p.Pnext)
{
if (p.Ptype)
{ /* Argument is a type */
if (!NEWTEMPMANGLE)
CHAR('T');
cpp_argument_list(p.Ptype, 1);
}
else if (p.Psym)
{
CHAR('V'); // this is a 'class' name, but it should be a 'template' name
cpp_ecsu_name(p.Psym);
}
else
{ /* Argument is an expression */
elem *e = p.Pelem;
tym_t ty = tybasic(e.ET.Tty);
char *p2;
char[2] a = void;
int ni;
char c;
L2:
switch (e.Eoper)
{ case OPconst:
switch (ty)
{ case TYfloat: ni = FLOATSIZE; c = 'F'; goto L1;
case TYdouble_alias:
case TYdouble: ni = DOUBLESIZE; c = 'D'; goto L1;
case TYldouble: ni = tysize(TYldouble); c = 'L'; goto L1;
L1:
if (NEWTEMPMANGLE)
CHAR('$');
CHAR(c);
p2 = cast(char *)&e.EV.Vdouble;
while (ni--)
{ char ch;
static immutable char[16] hex = "0123456789ABCDEF";
ch = *p2++;
CHAR(hex[ch & 15]);
CHAR(hex[(ch >> 4) & 15]);
}
break;
default:
debug
{
if (!tyintegral(ty) && !tymptr(ty))
elem_print(e);
}
assert(tyintegral(ty) || tymptr(ty));
if (NEWTEMPMANGLE)
STR("$0");
else
CHAR('I');
cpp_dimension(el_tolongt(e));
break;
}
break;
case OPstring:
if (NEWTEMPMANGLE)
STR("$S");
else
CHAR('S');
if (e.EV.Voffset)
synerr(EM_const_init); // constant initializer expected
cpp_string(e.EV.Vstring,e.EV.Vstrlen);
break;
case OPrelconst:
if (e.EV.Voffset)
synerr(EM_const_init); // constant initializer expected
s = e.EV.Vsym;
if (NEWTEMPMANGLE)
{ STR("$1");
cpp_decorated_name(s);
}
else
{ CHAR('R');
cpp_zname(s.Sident.ptr);
}
break;
case OPvar:
if (e.EV.Vsym.Sflags & SFLvalue &&
tybasic(e.ET.Tty) != TYstruct)
{
e = e.EV.Vsym.Svalue;
goto L2;
}
else if (e.EV.Vsym.Sclass == SCconst /*&&
pstate.STintemplate*/)
{
CHAR('V'); // pretend to be a class name
cpp_zname(e.EV.Vsym.Sident.ptr);
break;
}
goto default;
default:
version (SCPPorHTOD)
{
debug
{
if (!errcnt)
elem_print(e);
}
synerr(EM_const_init); // constant initializer expected
assert(errcnt);
}
break;
}
}
}
*mangle.np = 0;
//printf("template_mangle() = '%s'\n", mangle.buf);
assert(strlen(mangle.buf.ptr) <= BUFIDMAX);
assert(mangle.buf[BUFIDMAX + 1] == 0x55);
return mangle.buf.ptr;
}
}
//////////////////////////////////////////////////////
// Functions corresponding to the name mangling grammar in the
// "Microsoft Object Mapping Specification"
private void cpp_string(char *s,size_t len)
{ char c;
for (; --len; s++)
{ static immutable char[11] special_char = ",/\\:. \n\t'-";
char *p;
c = *s;
if (c & 0x80 && isalpha(c & 0x7F))
{ CHAR('?');
c &= 0x7F;
}
else if (isalnum(c))
{ }
else
{
CHAR('?');
if ((p = cast(char *)strchr(special_char.ptr,c)) != null)
c = cast(char)('0' + (p - special_char.ptr));
else
{
CHAR('$');
CHAR('A' + ((c >> 4) & 0x0F));
c = 'A' + (c & 0x0F);
}
}
CHAR(c);
}
CHAR('@');
}
private void cpp_dimension(targ_ullong u)
{
if (u && u <= 10)
CHAR('0' + cast(char)u - 1);
else
{ char[u.sizeof * 2 + 1] buffer = void;
char *p;
buffer[buffer.length - 1] = 0;
for (p = &buffer[buffer.length - 1]; u; u >>= 4)
{
*--p = 'A' + (u & 0x0F);
}
STR(p);
CHAR('@');
}
}
static if (0)
{
private void cpp_dimension_ld(targ_ldouble ld)
{ ubyte[targ_ldouble.sizeof] ldbuf = void;
memcpy(ldbuf.ptr,&ld,ld.sizeof);
if (u && u <= 10)
CHAR('0' + cast(char)u - 1);
else
{ char[u.sizeof * 2 + 1] buffer = void;
char *p;
buffer[buffer.length - 1] = 0;
for (p = &buffer[buffer.length - 1]; u; u >>= 4)
{
*--p = 'A' + (u & 0x0F);
}
STR(p);
CHAR('@');
}
}
}
private void cpp_enum_name(Symbol *s)
{ type *t;
char c;
t = tstypes[TYint];
switch (tybasic(t.Tty))
{
case TYschar: c = '0'; break;
case TYuchar: c = '1'; break;
case TYshort: c = '2'; break;
case TYushort: c = '3'; break;
case TYint: c = '4'; break;
case TYuint: c = '5'; break;
case TYlong: c = '6'; break;
case TYulong: c = '7'; break;
default: assert(0);
}
CHAR(c);
cpp_ecsu_name(s);
}
private void cpp_reference_data_type(type *t, int flag)
{
if (tybasic(t.Tty) == TYarray)
{
int ndim;
type *tn;
int i;
CHAR('Y');
// Compute number of dimensions (we have at least one)
ndim = 0;
tn = t;
do
{ ndim++;
tn = tn.Tnext;
} while (tybasic(tn.Tty) == TYarray);
cpp_dimension(ndim);
for (; tybasic(t.Tty) == TYarray; t = t.Tnext)
{
if (t.Tflags & TFvla)
CHAR('X'); // DMC++ extension
else
cpp_dimension(t.Tdim);
}
// DMC++ extension
if (flag) // if template type argument
{
i = cpp_cvidx(t.Tty);
if (i)
{ CHAR('_');
//CHAR('X' + i - 1); // _X, _Y, _Z
CHAR('O' + i - 1); // _O, _P, _Q
}
}
cpp_basic_data_type(t);
}
else
cpp_basic_data_type(t);
}
private void cpp_pointer_data_type(type *t)
{
if (tybasic(t.Tty) == TYvoid)
CHAR('X');
else
cpp_reference_data_type(t, 0);
}
private void cpp_ecsu_data_type(type *t)
{ char c;
Symbol *stag;
int i;
type_debug(t);
switch (tybasic(t.Tty))
{
case TYstruct:
stag = t.Ttag;
switch (stag.Sstruct.Sflags & (STRclass | STRunion))
{ case 0: c = 'U'; break;
case STRunion: c = 'T'; break;
case STRclass: c = 'V'; break;
default:
assert(0);
}
CHAR(c);
cpp_ecsu_name(stag);
break;
case TYenum:
CHAR('W');
cpp_enum_name(t.Ttag);
break;
default:
debug
type_print(t);
assert(0);
}
}
private void cpp_basic_data_type(type *t)
{ char c;
int i;
//printf("cpp_basic_data_type(t)\n");
//type_print(t);
switch (tybasic(t.Tty))
{
case TYschar: c = 'C'; goto dochar;
case TYchar: c = 'D'; goto dochar;
case TYuchar: c = 'E'; goto dochar;
case TYshort: c = 'F'; goto dochar;
case TYushort: c = 'G'; goto dochar;
case TYint: c = 'H'; goto dochar;
case TYuint: c = 'I'; goto dochar;
case TYlong: c = 'J'; goto dochar;
case TYulong: c = 'K'; goto dochar;
case TYfloat: c = 'M'; goto dochar;
case TYdouble: c = 'N'; goto dochar;
case TYdouble_alias:
if (_tysize[TYint] == 4)
{ c = 'O';
goto dochar;
}
c = 'Z';
goto dochar2;
case TYldouble:
if (_tysize[TYint] == 2)
{ c = 'O';
goto dochar;
}
c = 'Z';
goto dochar2;
dochar:
CHAR(c);
break;
case TYllong: c = 'J'; goto dochar2;
case TYullong: c = 'K'; goto dochar2;
case TYbool: c = 'N'; goto dochar2; // was 'X' prior to 8.1b8
case TYwchar_t:
if (config.flags4 & CFG4nowchar_t)
{
c = 'G';
goto dochar; // same as TYushort
}