
// Copyright (c) 2009 by Digital Mars
// All Rights Reserved
// written by Walter Bright
// http://www.digitalmars.com
// License for redistribution is by either the Artistic License
// in artistic.txt, or the GNU General Public License in gpl.txt.
// See the included readme.txt for details.


#if SCPP || MARS
#include	<stdio.h>
#include	<string.h>
#include	<stdlib.h>
#include	<sys/types.h>
#include	<sys/stat.h>
#include	<fcntl.h>
#include	<ctype.h>

#if _WIN32 || linux
#include	<malloc.h>
#endif

#if linux || __APPLE__ || __FreeBSD__ || __sun&&__SVR4
#include	<signal.h>
#include	<unistd.h>
#endif

#include	"cc.h"
#include	"global.h"
#include	"code.h"
#include	"type.h"
#include	"mach.h"
#include	"outbuf.h"
#include	"filespec.h"
#include	"cv4.h"
#include	"cgcv.h"
#include	"dt.h"

#include	"aa.h"
#include	"tinfo.h"

#if MACHOBJ

#if MARS
#include	"../mars/mars.h"
#endif

#include	"mach.h"
#include	"dwarf.h"

static Outbuffer *fobjbuf;

regm_t BYTEREGS = BYTEREGS_INIT;
regm_t ALLREGS = ALLREGS_INIT;

static char __file__[] = __FILE__;	// for tassert.h
#include	"tassert.h"

#define DEST_LEN (IDMAX + IDOHD + 1)
char *obj_mangle2(Symbol *s,char *dest);

#if MARS
// C++ name mangling is handled by front end
#define cpp_mangle(s) ((s)->Sident)
#endif


/******************************************
 */

symbol *GOTsym;	// global offset table reference

symbol *elfobj_getGOTsym()
{
    if (!GOTsym)
    {
	GOTsym = symbol_name("_GLOBAL_OFFSET_TABLE_",SCglobal,tspvoid);
    }
    return GOTsym;
}

static void objfile_write(FILE *fd, void *buffer, unsigned len);

STATIC char * objmodtoseg (const char *modname);
STATIC void obj_browse_flush();
STATIC void objfixupp (struct FIXUP *);
STATIC void ledata_new (int seg,targ_size_t offset);

static long elf_align(targ_size_t size, long offset);

// The object file is built is several separate pieces


// String Table  - String table for all other names
static Outbuffer *symtab_strings;

// Section Headers
Outbuffer  *SECbuf;		// Buffer to build section table in
#define SecHdrTab ((section *)SECbuf->buf)

// The relocation for text and data seems to get lost.
// Try matching the order gcc output them
// This means defining the sections and then removing them if they are
// not used.
static int section_cnt;		// Number of sections in table
#define SEC_TAB_INIT 16		// Initial number of sections in buffer
#define SEC_TAB_INC  4		// Number of sections to increment buffer by

#define SYM_TAB_INIT 100	// Initial number of symbol entries in buffer
#define SYM_TAB_INC  50		// Number of symbols to increment buffer by

/* Three symbol tables, because the different types of symbols
 * are grouped into 3 different types (and a 4th for comdef's).
 */

static Outbuffer *local_symbuf;
static Outbuffer *public_symbuf;
static Outbuffer *extern_symbuf;

struct Comdef { symbol *sym; targ_size_t size; int count; };
static Outbuffer *comdef_symbuf;	// Comdef's are stored here

static Outbuffer *indirectsymbuf1;	// indirect symbol table of Symbol*'s
static int jumpTableSeg;		// segment index for __jump_table

static Outbuffer *indirectsymbuf2;	// indirect symbol table of Symbol*'s
static int pointersSeg;			// segment index for __pointers

/* If an objextdef() happens, set this to the string index,
 * to be added last to the symbol table.
 * Obviously, there can be only one.
 */
static IDXSTR extdef;

#if 0
#define STI_FILE 1		// Where file symbol table entry is
#define STI_TEXT 2
#define STI_DATA 3
#define STI_BSS  4
#define STI_GCC  5		// Where "gcc2_compiled" symbol is */
#define STI_RODAT 6		// Symbol for readonly data
#define STI_COM  8
#endif

// Each compiler segment is a section
// Predefined compiler segments CODE,DATA,CDATA,UDATA map to indexes
//	into SegData[]
//	New compiler segments are added to end.

/******************************
 * Returns !=0 if this segment is a code segment.
 */

int seg_data::isCode()
{
    //printf("SDshtidx = %d, x%x\n", SDshtidx, SecHdrTab[SDshtidx].flags);
    return strcmp(SecHdrTab[SDshtidx].segname, "__TEXT") == 0;
}


seg_data **SegData;
int seg_count;
int seg_max;
int seg_tlsseg = UNKNOWN;
int seg_tlsseg_bss = UNKNOWN;

/*******************************************************
 * Because the Mach-O relocations cannot be computed until after
 * all the segments are written out, and we need more information
 * than the Mach-O relocations provide, make our own relocation
 * type. Later, translate to Mach-O relocation structure.
 */

struct Relocation
{   // Relocations are attached to the struct seg_data they refer to
    targ_size_t offset;	// location in segment to be fixed up
    symbol *funcsym;	// function in which offset lies, if any
    symbol *targsym;	// if !=NULL, then location is to be fixed up
			// to address of this symbol
    unsigned targseg;	// if !=0, then location is to be fixed up
			// to address of start of this segment
    int rtype;		// RELxxxx
#define RELaddr	0	// straight address
#define RELrel	1	// relative to location to be fixed up
};


/*******************************
 * Output a string into a string table
 * Input:
 *	strtab	=	string table for entry
 *	str	=	string to add
 *
 * Returns index into the specified string table.
 */

IDXSTR elf_addstr(Outbuffer *strtab, const char *str)
{
    //printf("elf_addstr(strtab = %p str = '%s')\n",strtab,str);
    IDXSTR idx = strtab->size();	// remember starting offset
    strtab->writeString(str);
    //printf("\tidx %d, new size %d\n",idx,strtab->size());
    return idx;
}

/*******************************
 * Find a string in a string table
 * Input:
 *	strtab	=	string table for entry
 *	str	=	string to find
 *
 * Returns index into the specified string table or 0.
 */

static IDXSTR elf_findstr(Outbuffer *strtab, const char *str, const char *suffix)
{
    const char *ent = (char *)strtab->buf+1;
    const char *pend = ent+strtab->size() - 1;
    const char *s = str;
    const char *sx = suffix;
    int len = strlen(str);

    if (suffix)
	len += strlen(suffix);

    while(ent < pend)
    {
	if(*ent == 0)			// end of table entry
	{
	    if(*s == 0 && !sx)		// end of string - found a match
	    {
		return ent - (const char *)strtab->buf - len;
	    }
	    else			// table entry too short
	    {
		s = str;		// back to beginning of string
		sx = suffix;
		ent++;			// start of next table entry
	    }
	}
	else if (*s == 0 && sx && *sx == *ent)
	{				// matched first string
	    s = sx+1;			// switch to suffix
	    ent++;
	    sx = NULL;
	}
	else				// continue comparing
	{
	    if (*ent == *s)
	    {				// Have a match going
		ent++;
		s++;
	    }
	    else			// no match
	    {
		while(*ent != 0)	// skip to end of entry
		    ent++;
		ent++;			// start of next table entry
		s = str;		// back to beginning of string
		sx = suffix;
	    }
	}
    }
    return 0;			// never found match
}

/*******************************
 * Output a mangled string into the symbol string table
 * Input:
 *	str	=	string to add
 *
 * Returns index into the table.
 */

static IDXSTR elf_addmangled(Symbol *s)
{
    //printf("elf_addmangled(%s)\n", s->Sident);
    char dest[DEST_LEN];
    char *destr;
    const char *name;
    int len;
    IDXSTR namidx;

    namidx = symtab_strings->size();
    destr = obj_mangle2(s, dest);
    name = destr;
    if (CPP && name[0] == '_' && name[1] == '_')
    {
	if (strncmp(name,"__ct__",6) == 0)
	    name += 4;
#if 0
	switch(name[2])
	{
	    case 'c':
		if (strncmp(name,"__ct__",6) == 0)
		    name += 4;
		break;
	    case 'd':
		if (strcmp(name,"__dl__FvP") == 0)
		    name = "__builtin_delete";
		break;
	    case 'v':
		//if (strcmp(name,"__vec_delete__FvPiUIPi") == 0)
		    //name = "__builtin_vec_del";
		//else 
		//if (strcmp(name,"__vn__FPUI") == 0)
		    //name = "__builtin_vec_new";
		break;
	    case 'n':
		if (strcmp(name,"__nw__FPUI") == 0)
		    name = "__builtin_new";
		break;
	}
#endif
    }
    else if (tyfunc(s->ty()) && s->Sfunc && s->Sfunc->Fredirect)
	name = s->Sfunc->Fredirect;
    len = strlen(name);
    symtab_strings->reserve(len+1);
    strcpy((char *)symtab_strings->p,name);
    symtab_strings->setsize(namidx+len+1);
    if (destr != dest)			// if we resized result
	mem_free(destr);
    //dbg_printf("\telf_addmagled symtab_strings %s namidx %d len %d size %d\n",name, namidx,len,symtab_strings->size());
    return namidx;
}

/**************************
 * Ouput read only data and generate a symbol for it.
 *
 */

symbol * elf_sym_cdata(tym_t ty,char *p,int len)
{
    symbol *s;

#if 0
    if (OPT_IS_SET(OPTfwritable_strings))
    {
	alignOffset(DATA, tysize(ty));
	s = symboldata(Doffset, ty);
	SegData[DATA]->SDbuf->write(p,len);
	s->Sseg = DATA;
	s->Soffset = Doffset;	// Remember its offset into DATA section
	Doffset += len;
    }
    else
#endif
    {
	//printf("elf_sym_cdata(ty = %x, p = %x, len = %d, CDoffset = %x)\n", ty, p, len, CDoffset);
	alignOffset(CDATA, tysize(ty));
	s = symboldata(CDoffset, ty);
	s->Sseg = CDATA;
	//objpubdef(CDATA, s, CDoffset);
	obj_bytes(CDATA, CDoffset, len, p);
    }
				
    s->Sfl = /*(config.flags3 & CFG3pic) ? FLgotoff :*/ FLextern;
    return s;
}

/**************************
 * Ouput read only data for data
 *
 */

int elf_data_cdata(char *p, int len, int *pseg)
{
    int oldoff;
    /*if (OPT_IS_SET(OPTfwritable_strings))
    {
	oldoff = Doffset;
	SegData[DATA]->SDbuf->reserve(len);
	SegData[DATA]->SDbuf->writen(p,len);
	Doffset += len;
	*pseg = DATA;
    }
    else*/
    {
	oldoff = CDoffset;
	SegData[CDATA]->SDbuf->reserve(len);
	SegData[CDATA]->SDbuf->writen(p,len);
	CDoffset += len;
	*pseg = CDATA;
    }
    return oldoff;
}

int elf_data_cdata(char *p, int len)
{
    int pseg;
    
    return elf_data_cdata(p, len, &pseg);
}

/******************************
 * Perform initialization that applies to all .o output files.
 *	Called before any other obj_xxx routines
 */

void obj_init(Outbuffer *objbuf, const char *filename, const char *csegname)
{
    //printf("obj_init()\n");
    cseg = CODE;
    fobjbuf = objbuf;
    
    seg_tlsseg = UNKNOWN;
    seg_tlsseg_bss = UNKNOWN;
    GOTsym = NULL;

    // Initialize buffers

    if (symtab_strings)
	symtab_strings->setsize(1);
    else
    {	symtab_strings = new Outbuffer(1024);
	symtab_strings->reserve(2048);
	symtab_strings->writeByte(0);
    }

    if (!local_symbuf)
	local_symbuf = new Outbuffer(sizeof(symbol *) * SYM_TAB_INIT);
    local_symbuf->setsize(0);

    if (!public_symbuf)
	public_symbuf = new Outbuffer(sizeof(symbol *) * SYM_TAB_INIT);
    public_symbuf->setsize(0);

    if (!extern_symbuf)
	extern_symbuf = new Outbuffer(sizeof(symbol *) * SYM_TAB_INIT);
    extern_symbuf->setsize(0);

    if (!comdef_symbuf)
	comdef_symbuf = new Outbuffer(sizeof(symbol *) * SYM_TAB_INIT);
    comdef_symbuf->setsize(0);

    extdef = 0;

    if (indirectsymbuf1)
	indirectsymbuf1->setsize(0);
    jumpTableSeg = 0;

    if (indirectsymbuf2)
	indirectsymbuf2->setsize(0);
    pointersSeg = 0;

    // Initialize segments for CODE, DATA, UDATA and CDATA

    if (SECbuf)
    {
	SECbuf->setsize(sizeof(struct section));
    }
    else
    {
	SECbuf = new Outbuffer(SYM_TAB_INC * sizeof(struct section));
	SECbuf->reserve(SEC_TAB_INIT * sizeof(struct section));
	// Ignore the first section - section numbers start at 1
	SECbuf->writezeros(sizeof(struct section));
    }
    section_cnt = 1;

    seg_count = 0;
    mach_getsegment("__text",  "__TEXT", 2, S_REGULAR | S_ATTR_PURE_INSTRUCTIONS | S_ATTR_SOME_INSTRUCTIONS);
    mach_getsegment("__data",  "__DATA", 2, S_REGULAR);		// DATA
    mach_getsegment("__const", "__TEXT", 2, S_REGULAR);		// CDATA
    mach_getsegment("__bss",   "__DATA", 2, S_ZEROFILL);	// UDATA

    if (config.fulltypes)
	dwarf_initfile(filename);
}

/**************************
 * Initialize the start of object output for this particular .o file.
 *
 * Input:
 *	filename:	Name of source file
 *	csegname:	User specified default code segment name
 */

void obj_initfile(const char *filename, const char *csegname, const char *modname)
{
    //dbg_printf("obj_initfile(filename = %s, modname = %s)\n",filename,modname);
#if SCPP
    if (csegname && *csegname && strcmp(csegname,".text"))
    {	// Define new section and make it the default for cseg segment
	// NOTE: cseg is initialized to CODE
	IDXSEC newsecidx;
	Elf32_Shdr *newtextsec;
	IDXSYM newsymidx;
	SegData[cseg]->SDshtidx = newsecidx =
	    elf_newsection(csegname,0,SHT_PROGDEF,SHF_ALLOC|SHF_EXECINSTR);
	newtextsec = &SecHdrTab[newsecidx];
	newtextsec->sh_addralign = 4;
	SegData[cseg]->SDsymidx = 
	    elf_addsym(0, 0, 0, STT_SECTION, STB_LOCAL, newsecidx);
    }
#endif
    if (config.fulltypes)
	dwarf_initmodule(filename, modname);
}

/************************************
 * Patch pseg/offset by adding in the vmaddr difference from
 * pseg/offset to start of seg.
 */

int32_t *patchAddr(int seg, targ_size_t offset)
{
    return(int32_t *)(fobjbuf->buf + SecHdrTab[SegData[seg]->SDshtidx].offset + offset);
}

void patch(seg_data *pseg, targ_size_t offset, int seg, targ_size_t value)
{
    //printf("patch(offset = x%04x, seg = %d)\n", (unsigned)offset, seg);
    int32_t *p = (int32_t *)(fobjbuf->buf + SecHdrTab[pseg->SDshtidx].offset + offset);
#if 0
    printf("\taddr1 = x%x\n\taddr2 = x%x\n\t*p = x%x\n\tdelta = x%x\n",
	SecHdrTab[pseg->SDshtidx].addr,
	SecHdrTab[SegData[seg]->SDshtidx].addr,
	*p,
	SecHdrTab[SegData[seg]->SDshtidx].addr -
	(SecHdrTab[pseg->SDshtidx].addr + offset));
#endif
    *p += SecHdrTab[SegData[seg]->SDshtidx].addr -
	  (SecHdrTab[pseg->SDshtidx].addr - value);
}

/***************************
 * Number symbols so they are
 * ordered as locals, public and then extern/comdef
 */

void mach_numbersyms()
{
    //printf("mach_numbersyms()\n");
    int n = 0;

    int dim;
    dim = local_symbuf->size() / sizeof(symbol *);
    for (int i = 0; i < dim; i++)
    {	symbol *s = ((symbol **)local_symbuf->buf)[i];
	s->Sxtrnnum = n;
	n++;
    }

    dim = public_symbuf->size() / sizeof(symbol *);
    for (int i = 0; i < dim; i++)
    {	symbol *s = ((symbol **)public_symbuf->buf)[i];
	s->Sxtrnnum = n;
	n++;
    }

    dim = extern_symbuf->size() / sizeof(symbol *);
    for (int i = 0; i < dim; i++)
    {	symbol *s = ((symbol **)extern_symbuf->buf)[i];
	s->Sxtrnnum = n;
	n++;
    }

    dim = comdef_symbuf->size() / sizeof(Comdef);
    for (int i = 0; i < dim; i++)
    {	Comdef *c = ((Comdef *)comdef_symbuf->buf) + i;
	c->sym->Sxtrnnum = n;
	n++;
    }
}
	    
		
/***************************
 * Fixup and terminate object file.
 */

void obj_termfile()
{
    //dbg_printf("obj_termfile\n");
    if (configv.addlinenumbers)
    {
	dwarf_termmodule();
    }
}

/*********************************
 * Terminate package.
 */

void obj_term()
{
    //printf("obj_term()\n");
#if SCPP
    if (!errcnt)
#endif
    {
        outfixlist();		// backpatches
    }

    if (configv.addlinenumbers)
    {
	dwarf_termfile();
    }

#if SCPP
    if (errcnt)
	return;
#endif

    /* Write out the object file in the following order:
     *	header
     *	commands
     *		segment_command
     *			{ sections }
     *		symtab_command
     *		dysymtab_command
     *	{ segment contents }
     *	{ relocations }
     *	symbol table
     *	string table
     *	indirect symbol table
     */

    unsigned foffset;
    unsigned headersize;
    unsigned sizeofcmds;

    // Write out the bytes for the header
    if (I64)
    {
	mach_header_64 header;

	header.magic = MH_MAGIC_64;
	header.cputype = CPU_TYPE_X86_64;
	header.cpusubtype = CPU_SUBTYPE_I386_ALL;
	header.filetype = MH_OBJECT;
	header.ncmds = 3;
	header.sizeofcmds = sizeof(segment_command_64) +
				(section_cnt - 1) * sizeof(struct section_64) +
			    sizeof(symtab_command) +
			    sizeof(dysymtab_command);
	header.flags = MH_SUBSECTIONS_VIA_SYMBOLS;
	header.reserved = 0;
	fobjbuf->write(&header, sizeof(header));
	foffset = sizeof(header); 	// start after header 
	headersize = sizeof(header);
	sizeofcmds = header.sizeofcmds;

	// Write the actual data later
	fobjbuf->writezeros(header.sizeofcmds);
	foffset += header.sizeofcmds;
    }
    else
    {
	mach_header header;

	header.magic = MH_MAGIC;
	header.cputype = CPU_TYPE_I386;
	header.cpusubtype = CPU_SUBTYPE_I386_ALL;
	header.filetype = MH_OBJECT;
	header.ncmds = 3;
	header.sizeofcmds = sizeof(segment_command) +
				(section_cnt - 1) * sizeof(struct section) +
			    sizeof(symtab_command) +
			    sizeof(dysymtab_command);
	header.flags = MH_SUBSECTIONS_VIA_SYMBOLS;
	fobjbuf->write(&header, sizeof(header));
	foffset = sizeof(header); 	// start after header 
	headersize = sizeof(header);
	sizeofcmds = header.sizeofcmds;

	// Write the actual data later
	fobjbuf->writezeros(header.sizeofcmds);
	foffset += header.sizeofcmds;
    }

    struct segment_command segment_cmd;
    struct symtab_command symtab_cmd;
    struct dysymtab_command dysymtab_cmd;

    memset(&segment_cmd, 0, sizeof(segment_cmd));
    memset(&symtab_cmd, 0, sizeof(symtab_cmd));
    memset(&dysymtab_cmd, 0, sizeof(dysymtab_cmd));

    segment_cmd.cmd = LC_SEGMENT;
    segment_cmd.cmdsize = sizeof(segment_cmd) +
				(section_cnt - 1) * sizeof(struct section);
    segment_cmd.nsects = section_cnt - 1;
    segment_cmd.maxprot = 7;
    segment_cmd.initprot = 7;

    symtab_cmd.cmd = LC_SYMTAB;
    symtab_cmd.cmdsize = sizeof(symtab_cmd);

    dysymtab_cmd.cmd = LC_DYSYMTAB;
    dysymtab_cmd.cmdsize = sizeof(dysymtab_cmd);

    /* If a __pointers section was emitted, need to set the .reserved1
     * field to the symbol index in the indirect symbol table of the
     * start of the __pointers symbols.
     */
    if (pointersSeg)
    {
	seg_data *pseg = SegData[pointersSeg]; 
	struct section *psechdr = &SecHdrTab[pseg->SDshtidx]; // corresponding section
	psechdr->reserved1 = indirectsymbuf1
		? indirectsymbuf1->size() / sizeof(Symbol *)
		: 0;
    }

    // Walk through sections determining size and file offsets

    //
    // First output individual section data associate with program
    //	code and data
    //
    foffset = elf_align(I64 ? 8 : 4, foffset);
    segment_cmd.fileoff = foffset;
    unsigned vmaddr = 0;

    //printf("Setup offsets and sizes foffset %d\n\tsection_cnt %d, seg_count %d\n",foffset,section_cnt,seg_count);
    // Zero filled segments go at the end, so go through segments twice
    for (int i = 0; i < 2; i++)
    {
	for (int seg = 1; seg <= seg_count; seg++)
	{
	    seg_data *pseg = SegData[seg]; 
	    struct section *psechdr = &SecHdrTab[pseg->SDshtidx]; // corresponding section

	    // Do zero-fill the second time through this loop
	    if (i ^ (psechdr->flags == S_ZEROFILL))
		continue;

	    int align = 1 << psechdr->align;
	    foffset = elf_align(align, foffset);
	    vmaddr = (vmaddr + align - 1) & ~(align - 1);
	    if (psechdr->flags == S_ZEROFILL)
	    {
		psechdr->offset = 0;
		psechdr->size = pseg->SDoffset; // accumulated size	
	    }
	    else
	    {
		psechdr->offset = foffset;
		psechdr->size = 0;
		//printf("\tsection name %s,", psechdr->sectname);
		if (pseg->SDbuf && pseg->SDbuf->size())
		{
		    //printf("\tsize %d\n", pseg->SDbuf->size());
		    psechdr->size = pseg->SDbuf->size();
		    fobjbuf->write(pseg->SDbuf->buf, psechdr->size);
		    foffset += psechdr->size;
		}
	    }
	    psechdr->addr = vmaddr;
	    vmaddr += psechdr->size;
	    //printf(" assigned offset %d, size %d\n", foffset, psechdr->sh_size);
	}
    }

    segment_cmd.vmsize = vmaddr;
    segment_cmd.filesize = foffset - segment_cmd.fileoff;

    // Put out relocation data
    mach_numbersyms();
    for (int seg = 1; seg <= seg_count; seg++)
    {
	seg_data *pseg = SegData[seg]; 
	struct section *psechdr = &SecHdrTab[pseg->SDshtidx];	// corresponding section
	//printf("psechdr->addr = x%x\n", psechdr->addr);
	foffset = elf_align(I64 ? 8 : 4, foffset);
	unsigned reloff = foffset;
	unsigned nreloc = 0;
	if (pseg->SDrel)
	{   Relocation *r = (Relocation *)pseg->SDrel->buf;
	    Relocation *rend = (Relocation *)(pseg->SDrel->buf + pseg->SDrel->size());
	    for (; r != rend; r++)
	    {	const char *rs = r->rtype == RELaddr ? "addr" : "rel";
		symbol *s = r->targsym;
		//printf("%d:x%04x : tseg %d tsym %p REL%s\n",
		    //seg, r->offset, r->targseg, s, rs);
		relocation_info rel;
		scattered_relocation_info srel;
		if (s)
		{
		    //printf("Relocation\n");
		    //symbol_print(s);
		    if (pseg->isCode())
		    {
		    }
		    else
		    {
			if (s->Sclass == SCextern ||
			    s->Sclass == SCcomdef ||
			    s->Sclass == SCcomdat)
			{
			    rel.r_address = r->offset;
			    rel.r_symbolnum = s->Sxtrnnum;
			    rel.r_pcrel = 0;
			    rel.r_length = 2;
			    rel.r_extern = 1;
			    rel.r_type = GENERIC_RELOC_VANILLA;
			    fobjbuf->write(&rel, sizeof(rel));
			    foffset += sizeof(rel);
			    nreloc++;
			    continue;
			}
			else
			{
			    rel.r_address = r->offset;
			    rel.r_symbolnum = s->Sseg;
			    rel.r_pcrel = 0;
			    rel.r_length = 2;
			    rel.r_extern = 0;
			    rel.r_type = GENERIC_RELOC_VANILLA;
			    fobjbuf->write(&rel, sizeof(rel));
			    foffset += sizeof(rel);
			    nreloc++;
			    int32_t *p = patchAddr(seg, r->offset);
			    // Absolute address; add in addr of start of targ seg
			    *p += SecHdrTab[SegData[s->Sseg]->SDshtidx].addr + s->Soffset;
			    //patch(pseg, r->offset, s->Sseg, s->Soffset);
			    continue;
			}
		    }
		}
		else if (r->rtype == RELaddr && pseg->isCode())
		{   int32_t *p = patchAddr(seg, r->offset);
		    srel.r_scattered = 1;

		    srel.r_address = r->offset;
		    srel.r_type = GENERIC_RELOC_LOCAL_SECTDIFF;
		    srel.r_length = 2;
		    srel.r_value = SecHdrTab[SegData[r->targseg]->SDshtidx].addr +
			*p;
		    //printf("SECTDIFF: x%x + x%x = x%x\n", SecHdrTab[SegData[r->targseg]->SDshtidx].addr, *p, srel.r_value);
		    srel.r_pcrel = 0;
		    fobjbuf->write(&srel, sizeof(srel));
		    foffset += sizeof(srel);
		    nreloc++;

		    srel.r_address = 0;
		    srel.r_type = GENERIC_RELOC_PAIR;
		    srel.r_length = 2;
		    srel.r_value = SecHdrTab[pseg->SDshtidx].addr +
				r->funcsym->Slocalgotoffset + NPTRSIZE;
		    srel.r_pcrel = 0;
		    fobjbuf->write(&srel, sizeof(srel));
		    foffset += sizeof(srel);
		    nreloc++;

		    // Recalc due to possible realloc of fobjbuf->buf
		    p = patchAddr(seg, r->offset);
		    //printf("address = x%x, p = %p *p = x%x\n", r->offset, p, *p);
		    *p += SecHdrTab[SegData[r->targseg]->SDshtidx].addr -
			  (SecHdrTab[pseg->SDshtidx].addr + r->funcsym->Slocalgotoffset + NPTRSIZE);
		    continue;
		}
		else
		{
		    rel.r_address = r->offset;
		    rel.r_symbolnum = r->targseg;
		    rel.r_pcrel = (r->rtype == RELaddr) ? 0 : 1;
		    rel.r_length = 2;
		    rel.r_extern = 0;
		    rel.r_type = GENERIC_RELOC_VANILLA;
		    fobjbuf->write(&rel, sizeof(rel));
		    foffset += sizeof(rel);
		    nreloc++;
		    int32_t *p = patchAddr(seg, r->offset);
//int32_t before = *p;
		    if (rel.r_pcrel)
			// Relative address
			patch(pseg, r->offset, r->targseg, 0);
		    else
			// Absolute address; add in addr of start of targ seg
			*p += SecHdrTab[SegData[r->targseg]->SDshtidx].addr;
//printf("%d:x%04x before = x%04x, after = x%04x pcrel = %d\n", seg, r->offset, before, *p, rel.r_pcrel);
		    continue;
		}
	    }
	}
	if (nreloc)
	{
	    psechdr->reloff = reloff;
	    psechdr->nreloc = nreloc;
	}
    }

    // Put out symbol table
    foffset = elf_align(I64 ? 8 : 4, foffset);
    symtab_cmd.symoff = foffset;
    dysymtab_cmd.ilocalsym = 0;
    dysymtab_cmd.nlocalsym  = local_symbuf->size() / sizeof(symbol *);
    dysymtab_cmd.iextdefsym = dysymtab_cmd.nlocalsym;
    dysymtab_cmd.nextdefsym = public_symbuf->size() / sizeof(symbol *);
    dysymtab_cmd.iundefsym = dysymtab_cmd.iextdefsym + dysymtab_cmd.nextdefsym;
    int nexterns = extern_symbuf->size() / sizeof(symbol *);
    int ncomdefs = comdef_symbuf->size() / sizeof(Comdef);
    dysymtab_cmd.nundefsym  = nexterns + ncomdefs;
    symtab_cmd.nsyms =  dysymtab_cmd.nlocalsym +
			dysymtab_cmd.nextdefsym +
			dysymtab_cmd.nundefsym;
    fobjbuf->reserve(symtab_cmd.nsyms * sizeof(struct nlist));
    for (int i = 0; i < dysymtab_cmd.nlocalsym; i++)
    {	symbol *s = ((symbol **)local_symbuf->buf)[i];
	struct nlist sym;
	sym.n_un.n_strx = elf_addmangled(s);
	sym.n_value = s->Soffset + SecHdrTab[SegData[s->Sseg]->SDshtidx].addr;
	sym.n_type = N_SECT;
	sym.n_desc = 0;
	if (s->Sclass == SCcomdat)
	    sym.n_desc = N_WEAK_DEF;
	sym.n_sect = s->Sseg;
	fobjbuf->write(&sym, sizeof(sym));
    }
    for (int i = 0; i < dysymtab_cmd.nextdefsym; i++)
    {	symbol *s = ((symbol **)public_symbuf->buf)[i];

	//printf("Writing public symbol %d:x%x %s\n", s->Sseg, s->Soffset, s->Sident);
	struct nlist sym;
	sym.n_un.n_strx = elf_addmangled(s);
	sym.n_value = s->Soffset + SecHdrTab[SegData[s->Sseg]->SDshtidx].addr;
	sym.n_type = N_EXT | N_SECT;
	sym.n_desc = 0;
	if (s->Sclass == SCcomdat)
	    sym.n_desc = N_WEAK_DEF;
	sym.n_sect = s->Sseg;
	fobjbuf->write(&sym, sizeof(sym));
    }
    for (int i = 0; i < nexterns; i++)
    {	symbol *s = ((symbol **)extern_symbuf->buf)[i];
	struct nlist sym;
	sym.n_un.n_strx = elf_addmangled(s);
	sym.n_value = s->Soffset;
	sym.n_type = N_EXT | N_UNDF;
	sym.n_desc = tyfunc(s->ty()) ? REFERENCE_FLAG_UNDEFINED_LAZY
				     : REFERENCE_FLAG_UNDEFINED_NON_LAZY;
	sym.n_sect = 0;
	fobjbuf->write(&sym, sizeof(sym));
    }
    for (int i = 0; i < ncomdefs; i++)
    {	Comdef *c = ((Comdef *)comdef_symbuf->buf) + i;
	struct nlist sym;
	sym.n_un.n_strx = elf_addmangled(c->sym);
	sym.n_value = c->size * c->count;
	sym.n_type = N_EXT | N_UNDF;
	int align;
	if (c->size < 2)
	    align = 0;		// align is expressed as power of 2
	else if (c->size < 4)
	    align = 1;
	else if (c->size < 8)
	    align = 2;
	else if (c->size < 16)
	    align = 3;
	else
	    align = 4;
	sym.n_desc = align << 8;
	sym.n_sect = 0;
	fobjbuf->write(&sym, sizeof(sym));
    }
    if (extdef)
    {
	struct nlist sym;
	sym.n_un.n_strx = extdef;
	sym.n_value = 0;
	sym.n_type = N_EXT | N_UNDF;
	sym.n_desc = 0;
	sym.n_sect = 0;
	fobjbuf->write(&sym, sizeof(sym));
	symtab_cmd.nsyms++;
    }
    foffset += symtab_cmd.nsyms * sizeof(struct nlist);

    // Put out string table
    foffset = elf_align(I64 ? 8 : 4, foffset);
    symtab_cmd.stroff = foffset;
    symtab_cmd.strsize = symtab_strings->size();
    fobjbuf->write(symtab_strings->buf, symtab_cmd.strsize);
    foffset += symtab_cmd.strsize;

    // Put out indirectsym table, which is in two parts
    foffset = elf_align(I64 ? 8 : 4, foffset);
    dysymtab_cmd.indirectsymoff = foffset;
    if (indirectsymbuf1)
    {	dysymtab_cmd.nindirectsyms += indirectsymbuf1->size() / sizeof(Symbol *);
	for (int i = 0; i < dysymtab_cmd.nindirectsyms; i++)
	{   Symbol *s = ((Symbol **)indirectsymbuf1->buf)[i];
	    fobjbuf->write32(s->Sxtrnnum);
	}
    }
    if (indirectsymbuf2)
    {	int n = indirectsymbuf2->size() / sizeof(Symbol *);
	dysymtab_cmd.nindirectsyms += n;
	for (int i = 0; i < n; i++)
	{   Symbol *s = ((Symbol **)indirectsymbuf2->buf)[i];
	    fobjbuf->write32(s->Sxtrnnum);
	}
    }
    foffset += dysymtab_cmd.nindirectsyms * 4;

    /* The correct offsets are now determined, so
     * rewind and fix the header.
     */
    fobjbuf->position(headersize, sizeofcmds);
    fobjbuf->write(&segment_cmd, sizeof(segment_cmd));
    fobjbuf->write(SECbuf->buf + sizeof(struct section), (section_cnt - 1) * sizeof(struct section));
    fobjbuf->write(&symtab_cmd, sizeof(symtab_cmd));
    fobjbuf->write(&dysymtab_cmd, sizeof(dysymtab_cmd));
    fobjbuf->position(foffset, 0);
    fobjbuf->flush();
}

/*****************************
 * Line number support.
 */

/***************************
 * Record file and line number at segment and offset.
 * The actual .debug_line segment is put out by dwarf_termfile().
 * Input:
 *	cseg	current code segment
 */

void objlinnum(Srcpos srcpos, targ_size_t offset)
{
    unsigned linnum = srcpos.Slinnum;
    if (linnum == 0)
	return;

#if 0
#if MARS
    printf("objlinnum(cseg=%d, filename=%s linnum=%u, offset=x%lx)\n",
	cseg,srcpos.Sfilename ? srcpos.Sfilename : "null",linnum,offset);
#endif
#if SCPP
    printf("objlinnum(cseg=%d, filptr=%p linnum=%u, offset=x%lx)\n",
	cseg,srcpos.Sfilptr ? *srcpos.Sfilptr : 0,linnum,offset);
    if (srcpos.Sfilptr)
    {
	Sfile *sf = *srcpos.Sfilptr;
	printf("filename = %s\n", sf ? sf->SFname : "null");
    }
#endif
#endif

#if MARS
    if (!srcpos.Sfilename)
	return;
#endif
#if SCPP
    Sfile *sf;
    if (srcpos.Sfilptr)
    {	sfile_debug(&srcpos_sfile(srcpos));
	sf = *srcpos.Sfilptr;
    }
    else
	return;
#endif

    size_t i;
    seg_data *seg = SegData[cseg];

    // Find entry i in SDlinnum_data[] that corresponds to srcpos filename
    for (i = 0; 1; i++)
    {
	if (i == seg->SDlinnum_count)
	{   // Create new entry
	    if (seg->SDlinnum_count == seg->SDlinnum_max)
	    {	// Enlarge array
		unsigned newmax = seg->SDlinnum_max * 2 + 1;
		//printf("realloc %d\n", newmax * sizeof(linnum_data));
		seg->SDlinnum_data = (linnum_data *)mem_realloc(
		    seg->SDlinnum_data, newmax * sizeof(linnum_data));
		memset(seg->SDlinnum_data + seg->SDlinnum_max, 0,
		    (newmax - seg->SDlinnum_max) * sizeof(linnum_data));
		seg->SDlinnum_max = newmax;
	    }
	    seg->SDlinnum_count++;
#if MARS
	    seg->SDlinnum_data[i].filename = srcpos.Sfilename;
#endif
#if SCPP
	    seg->SDlinnum_data[i].filptr = sf;
#endif
	    break;
	}
#if MARS
	if (seg->SDlinnum_data[i].filename == srcpos.Sfilename)
#endif
#if SCPP
	if (seg->SDlinnum_data[i].filptr == sf)
#endif
	    break;
    }

    linnum_data *ld = &seg->SDlinnum_data[i];
//    printf("i = %d, ld = x%x\n", i, ld);
    if (ld->linoff_count == ld->linoff_max)
    {
	if (!ld->linoff_max)
	    ld->linoff_max = 8;
	ld->linoff_max *= 2;
	ld->linoff = (unsigned (*)[2])mem_realloc(ld->linoff, ld->linoff_max * sizeof(unsigned) * 2);
    }
    ld->linoff[ld->linoff_count][0] = srcpos.Slinnum;
    ld->linoff[ld->linoff_count][1] = offset;
    ld->linoff_count++;
}


/*******************************
 * Set start address
 */

void obj_startaddress(Symbol *s)
{
    //dbg_printf("obj_startaddress(Symbol *%s)\n",s->Sident);
    //obj.startaddress = s;
}

/*******************************
 * Output library name.
 * Output:
 */

void obj_includelib(const char *name)
{
    //dbg_printf("obj_includelib(name *%s)\n",name);
}

/**************************
 * Embed string in executable.
 */

void obj_exestr(const char *p)
{
    //dbg_printf("obj_exestr(char *%s)\n",p);
}

/**************************
 * Embed string in obj.
 */

void obj_user(const char *p)
{
    //dbg_printf("obj_user(char *%s)\n",p);
}

/*******************************
 * Output a weak extern record.
 */

void obj_wkext(Symbol *s1,Symbol *s2)
{
    //dbg_printf("obj_wkext(Symbol *%s,Symbol *s2)\n",s1->Sident,s2->Sident);
}

/*******************************
 * Output file name record.
 *
 * Currently assumes that obj_filename will not be called
 *	twice for the same file.
 */

void obj_filename(const char *modname)
{
    //dbg_printf("obj_filename(char *%s)\n",modname);
    // Not supported by Mach-O
}

/*******************************
 * Embed compiler version in .obj file.
 */

void obj_compiler()
{
    //dbg_printf("obj_compiler\n");
}

//#if NEWSTATICDTOR

/**************************************
 * Symbol is the function that calls the static constructors.
 * Put a pointer to it into a special segment that the startup code
 * looks at.
 * Input:
 *	s	static constructor function
 *	dtor	!=0 if leave space for static destructor
 *	seg	1:	user
 *		2:	lib
 *		3:	compiler
 */

void obj_staticctor(Symbol *s,int dtor,int none)
{
#if 0
    IDXSEC seg;
    Outbuffer *buf;

    //dbg_printf("obj_staticctor(%s) offset %x\n",s->Sident,s->Soffset);
    //symbol_print(s);
    s->Sseg = seg = 
	elf_getsegment(".ctors", NULL, SHT_PROGDEF, SHF_ALLOC|SHF_WRITE, 4);
    buf = SegData[seg]->SDbuf;
    if (I64)
	buf->write64(s->Soffset);
    else
	buf->write32(s->Soffset);
    mach_addrel(seg, SegData[seg]->SDoffset, s, RELaddr);
    SegData[seg]->SDoffset = buf->size();
#endif
}

/**************************************
 * Symbol is the function that calls the static destructors.
 * Put a pointer to it into a special segment that the exit code
 * looks at.
 * Input:
 *	s	static destructor function
 */

void obj_staticdtor(Symbol *s)
{
#if 0
    IDXSEC seg;
    Outbuffer *buf;

    //dbg_printf("obj_staticdtor(%s) offset %x\n",s->Sident,s->Soffset);
    //symbol_print(s);
    seg = elf_getsegment(".dtors", NULL, SHT_PROGDEF, SHF_ALLOC|SHF_WRITE, 4);
    buf = SegData[seg]->SDbuf;
    if (I64)
	buf->write64(s->Soffset);
    else
	buf->write32(s->Soffset);
    mach_addrel(seg, SegData[seg]->SDoffset, s, RELaddr);
    SegData[seg]->SDoffset = buf->size();
#endif
}

//#else

/***************************************
 * Stuff pointer to function in its own segment.
 * Used for static ctor and dtor lists.
 */

void obj_funcptr(Symbol *s)
{
    //dbg_printf("obj_funcptr(%s) \n",s->Sident);
}

//#endif

/***************************************
 * Stuff the following data in a separate segment:
 *	pointer to function
 *	pointer to ehsym
 *	length of function
 */

void obj_ehtables(Symbol *sfunc,targ_size_t size,Symbol *ehsym)
{
    //dbg_printf("obj_ehtables(%s) \n",sfunc->Sident);

    /* BUG: this should go into a COMDAT if sfunc is in a COMDAT
     * otherwise the duplicates aren't removed.
     */

    symbol *ehtab_entry = symbol_generate(SCstatic,type_alloc(TYint));
    symbol_keep(ehtab_entry);
    mach_getsegment("__deh_beg", "__DATA", 2, S_REGULAR);
    ehtab_entry->Sseg = mach_getsegment("__deh_eh", "__DATA", 2, S_REGULAR);
    mach_getsegment("__deh_end", "__DATA", 2, S_REGULAR);
    ehtab_entry->Stype->Tmangle = mTYman_c;
    ehsym->Stype->Tmangle = mTYman_c;
    dt_t **pdte = &ehtab_entry->Sdt;
    pdte = dtxoff(pdte,sfunc,0,TYnptr);
    pdte = dtxoff(pdte,ehsym,0,TYnptr);
    pdte = dtnbytes(pdte,4,(char *)&sfunc->Ssize);
    outdata(ehtab_entry);
}

/*********************************************
 * Put out symbols that define the beginning/end of the .deh_eh section.
 * This gets called if this is the module with "main()" in it.
 */

void obj_ehsections()
{
    //printf("obj_ehsections()\n");
    type *t = type_fake(TYint);
    t->Tmangle = mTYman_c;

    /* Exception handling sections
     */
    int seg = mach_getsegment("__deh_beg", "__DATA", 2, S_REGULAR);
    symbol *s_deh_beg = symbol_name("_deh_beg", SCglobal, t);
    objpubdef(seg, s_deh_beg, 0);
    //obj_bytes(sec, 0, 4, NULL);

    seg = mach_getsegment("__deh_eh", "__DATA", 2, S_REGULAR);
    /* If we don't write something to this seg, then the linker won't put
     * it between deh_beg and deh_end. Don't know why.
     */
    Outbuffer *buf = SegData[seg]->SDbuf;
    buf->writezeros(12);

    seg = mach_getsegment("__deh_end", "__DATA", 2, S_REGULAR);
    symbol *s_deh_end = symbol_name("_deh_end", SCglobal, t);
    objpubdef(seg, s_deh_end, 0);

    /* Thread local storage sections
     */
    seg = mach_getsegment("__tls_beg", "__DATA", 2, S_REGULAR);
    symbol *s_tls_beg = symbol_name("_tls_beg", SCglobal, t);
    objpubdef(seg, s_tls_beg, 0);
    //obj_bytes(sec, 0, 4, NULL);

    mach_getsegment("__tlsdata", "__DATA", 2, S_REGULAR);

    seg = mach_getsegment("__tls_end", "__DATA", 2, S_REGULAR);
    symbol *s_tls_end = symbol_name("_tls_end", SCglobal, t);
    objpubdef(seg, s_tls_end, 0);

    /* Thread local comdat sections
     */
    seg = mach_getsegment("__tlscoal_beg", "__DATA", 2, S_REGULAR);
    symbol *s_tlscoal_beg = symbol_name("_tlscoal_beg", SCglobal, t);
    objpubdef(seg, s_tlscoal_beg, 0);
    //obj_bytes(sec, 0, 4, NULL);

    mach_getsegment("__tlscoal_nt", "__DATA", 4, S_COALESCED);

    seg = mach_getsegment("__tlscoal", "__DATA", 2, S_REGULAR);
    symbol *s_tlscoal_end = symbol_name("_tlscoal_end", SCglobal, t);
    objpubdef(seg, s_tlscoal_end, 0);

    /* Module info sections
     */
    seg = mach_getsegment("__minfo_beg", "__DATA", 2, S_REGULAR);
    symbol *s_minfo_beg = symbol_name("_minfo_beg", SCglobal, t);
    objpubdef(seg, s_minfo_beg, 0);
    //obj_bytes(sec, 0, 4, NULL);

    mach_getsegment("__minfodata", "__DATA", 2, S_REGULAR);

    seg = mach_getsegment("__minfo_end", "__DATA", 2, S_REGULAR);
    symbol *s_minfo_end = symbol_name("_minfo_end", SCglobal, t);
    objpubdef(seg, s_minfo_end, 0);
}

/*********************************
 * Setup for Symbol s to go into a COMDAT segment.
 * Output (if s is a function):
 *	cseg		segment index of new current code segment
 *	Coffset		starting offset in cseg
 * Returns:
 *	"segment index" of COMDAT
 */

int obj_comdat(Symbol *s)
{
    const char *sectname;
    const char *segname;
    int align;
    int flags;

    //printf("obj_comdat(Symbol* %s)\n",s->Sident);
    //symbol_print(s);
    symbol_debug(s);

    if (tyfunc(s->ty()))
    {
	sectname = "__textcoal_nt";
	segname = "__TEXT";
	align = 2;		// 4 byte alignment
	flags = S_COALESCED | S_ATTR_PURE_INSTRUCTIONS | S_ATTR_SOME_INSTRUCTIONS;
	s->Sseg = mach_getsegment(sectname, segname, align, flags);
    }
    else if ((s->ty() & mTYLINK) == mTYthread)
    {
	s->Sfl = FLtlsdata;
	mach_getsegment("__tlscoal_beg", "__DATA", 2, S_REGULAR);
	s->Sseg = mach_getsegment("__tlscoal_nt", "__DATA", 4, S_COALESCED);
	mach_getsegment("__tlscoal", "__DATA", 2, S_REGULAR);
    }
    else
    {
	s->Sfl = FLdata;
	sectname = "__datacoal_nt";
	segname = "__DATA";
	align = 4;		// 16 byte alignment
	flags = S_COALESCED;
	s->Sseg = mach_getsegment(sectname, segname, align, flags);
    }
				// find or create new segment
    s->Soffset = SegData[s->Sseg]->SDoffset;
    if (s->Sfl == FLdata || s->Sfl == FLtlsdata)
    {	// Code symbols are 'published' by elf_func_start()

	objpubdef(s->Sseg,s,s->Soffset);
	searchfixlist(s);		// backpatch any refs to this symbol
    }
    return s->Sseg;
}

/**********************************
 * Get segment.
 * Returns:
 *	segment index of found or newly created segment
 */

int mach_getsegment(const char *sectname, const char *segname,
	int align, int flags)
{
    assert(strlen(sectname) <= 16);
    assert(strlen(segname)  <= 16);
    for (int seg = 1; seg <= seg_count; seg++)
    {	seg_data *pseg = SegData[seg];
	if (strncmp(SecHdrTab[pseg->SDshtidx].sectname, sectname, 16) == 0 &&
	    strncmp(SecHdrTab[pseg->SDshtidx].segname, segname, 16) == 0)
	    return seg;		// return existing segment
    }

    int seg = ++seg_count;
    if (seg_count >= seg_max)
    {				// need more room in segment table
	seg_max += 10;
	SegData = (seg_data **)mem_realloc(SegData,seg_max * sizeof(seg_data *));
	memset(&SegData[seg_count], 0, (seg_max - seg_count) * sizeof(seg_data *));
    }
    assert(seg_count < seg_max);
    if (SegData[seg])
    {   seg_data *pseg = SegData[seg];
	Outbuffer *b1 = pseg->SDbuf;
	Outbuffer *b2 = pseg->SDrel;
	memset(pseg, 0, sizeof(seg_data));
	if (b1)
	    b1->setsize(0);
	if (b2)
	    b2->setsize(0);
	pseg->SDbuf = b1;
	pseg->SDrel = b2;
    }
    else
    {
	seg_data *pseg = (seg_data *)mem_calloc(sizeof(seg_data));
	SegData[seg] = pseg;
	if (flags != S_ZEROFILL)
	{   pseg->SDbuf = new Outbuffer(4096);
	    pseg->SDbuf->reserve(4096);
	}
    }

    //dbg_printf("\tNew segment - %d size %d\n", seg,SegData[seg]->SDbuf);
    seg_data *pseg = SegData[seg];

    pseg->SDseg = seg;
    pseg->SDoffset = 0;

    struct section *sec = (struct section *)
	SECbuf->writezeros(sizeof(struct section));
    strncpy(sec->sectname, sectname, 16);
    strncpy(sec->segname, segname, 16);
    sec->align = align;
    sec->flags = flags;

    pseg->SDshtidx = section_cnt++;

    //printf("seg_count = %d\n", seg_count);
    return seg;
}

/********************************
 * Define a new code segment.
 * Input:
 *	name		name of segment, if NULL then revert to default
 *	suffix	0	use name as is
 *		1	append "_TEXT" to name
 * Output:
 *	cseg		segment index of new current code segment
 *	Coffset		starting offset in cseg
 * Returns:
 *	segment index of newly created code segment
 */

int obj_codeseg(char *name,int suffix)
{
    //dbg_printf("obj_codeseg(%s,%x)\n",name,suffix);
#if 0
    const char *sfx = (suffix) ? "_TEXT" : NULL;

    if (!name)				// returning to default code segment
    {
	if (cseg != CODE)		// not the current default
	{
	    SegData[cseg]->SDoffset = Coffset;
	    Coffset = SegData[CODE]->SDoffset;
	    cseg = CODE;
	}
	return cseg;
    }

    int seg = elf_getsegment(name, sfx, SHT_PROGDEF, SHF_ALLOC|SHF_EXECINSTR, 4);
				    // find or create code segment

    cseg = seg;				// new code segment index
    Coffset = 0;
    return seg;
#else
    return 0;
#endif
}

/*********************************
 * Define segments for Thread Local Storage.
 * Output:
 *	seg_tlsseg	set to segment number for TLS segment.
 * Returns:
 *	segment for TLS segment
 */

seg_data *obj_tlsseg()
{
    //printf("obj_tlsseg(\n");

    if (seg_tlsseg == UNKNOWN)
    {
	seg_tlsseg = mach_getsegment("__tlsdata", "__DATA", 2, S_REGULAR);
    }
    return SegData[seg_tlsseg];
}


/*********************************
 * Define segments for Thread Local Storage.
 * Output:
 *	seg_tlsseg_bss	set to segment number for TLS segment.
 * Returns:
 *	segment for TLS segment
 */

seg_data *obj_tlsseg_bss()
{
    /* Because Mach-O does not support tls, it's easier to support
     * if we have all the tls in one segment.
     */
    return obj_tlsseg();
}


/*******************************
 * Output an alias definition record.
 */

void obj_alias(const char *n1,const char *n2)
{   unsigned len;
    char *buffer;

    //printf("obj_alias(%s,%s)\n",n1,n2);
    assert(0);
#if NOT_DONE
    buffer = (char *) alloca(strlen(n1) + strlen(n2) + 2 * ONS_OHD);
    len = obj_namestring(buffer,n1);
    len += obj_namestring(buffer + len,n2);
    objrecord(ALIAS,buffer,len);
#endif
}

char *unsstr (unsigned value)
{
    static char buffer [64];
    
    sprintf (buffer, "%d", value);
    return buffer;
}

/*******************************
 * Mangle a name.
 * Returns:
 *	mangled name
 */

char *obj_mangle2(Symbol *s,char *dest)
{   
    size_t len;
    char *name;

    //printf("obj_mangle(s = %p, '%s'), mangle = x%x\n",s,s->Sident,type_mangle(s->Stype));
    symbol_debug(s);
    assert(dest);
#if SCPP
    name = CPP ? cpp_mangle(s) : s->Sident;
#elif MARS
    name = cpp_mangle(s);
#else
    name = s->Sident;
#endif
    len = strlen(name);			// # of bytes in name
    //dbg_printf("len %d\n",len);
    switch (type_mangle(s->Stype))
    {	
	case mTYman_pas:		// if upper case
	case mTYman_for:
	    if (len >= DEST_LEN)
		dest = (char *)mem_malloc(len + 1);
	    memcpy(dest,name,len + 1);	// copy in name and ending 0
	    strupr(dest);		// to upper case
	    break;
	case mTYman_std:
#if TARGET_LINUX || TARGET_OSX || TARGET_FREEBSD || TARGET_SOLARIS
	    if (tyfunc(s->ty()) && !variadic(s->Stype))
#else
	    if (!(config.flags4 & CFG4oldstdmangle) &&
		config.exe == EX_NT && tyfunc(s->ty()) &&
		!variadic(s->Stype))
#endif
	    {
		char *pstr = unsstr(type_paramsize(s->Stype));
		size_t pstrlen = strlen(pstr);
		size_t destlen = len + 1 + pstrlen + 1;

		if (destlen > DEST_LEN)
		    dest = (char *)mem_malloc(destlen);
		memcpy(dest,name,len);
		dest[len] = '@';
		memcpy(dest + 1 + len, pstr, pstrlen + 1);
		break;
	    }
	case mTYman_cpp:
	case mTYman_d:
	case mTYman_sys:
	case 0:
	    if (len >= DEST_LEN)
		dest = (char *)mem_malloc(len + 1);
	    memcpy(dest,name,len+1);// copy in name and trailing 0
	    break;

	case mTYman_c:
	    if (len >= DEST_LEN - 1)
		dest = (char *)mem_malloc(1 + len + 1);
	    dest[0] = '_';
	    memcpy(dest + 1,name,len+1);// copy in name and trailing 0
	    break;


	default:
#ifdef DEBUG
	    printf("mangling %x\n",type_mangle(s->Stype));
	    symbol_print(s);
#endif
	    printf("%d\n", type_mangle(s->Stype));
	    assert(0);
    }
    //dbg_printf("\t %s\n",dest);
    return dest;
}

/*******************************
 * Export a function name.
 */

void obj_export(Symbol *s,unsigned argsize)
{
    //dbg_printf("obj_export(%s,%d)\n",s->Sident,argsize);
}

/*******************************
 * Update data information about symbol
 *	align for output and assign segment
 *	if not already specified.
 *
 * Input:
 *	sdata		data symbol
 *	datasize	output size
 *	seg		default seg if not known
 * Returns:
 *	actual seg
 */

int elf_data_start(Symbol *sdata,int datasize,int seg)
{
    targ_size_t alignbytes;
    //dbg_printf("elf_data_start(%s,size %d,seg %d)\n",sdata->Sident,datasize,seg);
    //symbol_print(sdata);

    if (sdata->Sseg == UNKNOWN)	// if we don't know then there
	sdata->Sseg = seg;	// wasn't any segment override
    else
	seg = sdata->Sseg;
    targ_size_t offset = Offset(seg);
    alignbytes = align(datasize, offset) - offset;
    if (alignbytes)
	obj_lidata(seg, offset, alignbytes);
    sdata->Soffset = offset + alignbytes;
    return seg;
}
	
/*******************************
 * Update function info before codgen
 *
 * If code for this function is in a different segment
 * than the current default in cseg, switch cseg to new segment.
 */

void elf_func_start(Symbol *sfunc)
{
    //printf("elf_func_start(%s)\n",sfunc->Sident);
    symbol_debug(sfunc);

    if (sfunc->Sseg == UNKNOWN)
	sfunc->Sseg = CODE;
    //printf("sfunc->Sseg %d CODE %d cseg %d Coffset x%x\n",sfunc->Sseg,CODE,cseg,Coffset);
    cseg = sfunc->Sseg;
    assert(cseg == CODE || cseg > UDATA);
    objpubdef(cseg, sfunc, Coffset);
    sfunc->Soffset = Coffset;

    if (config.fulltypes)
	dwarf_func_start(sfunc);
}

/*******************************
 * Update function info after codgen
 */

void elf_func_term(Symbol *sfunc)
{ 
    //dbg_printf("elf_func_term(%s) offset %x, Coffset %x symidx %d\n",
//	    sfunc->Sident, sfunc->Soffset,Coffset,sfunc->Sxtrnnum);

#if 0
    // fill in the function size
    if (I64)
	SymbolTable64[sfunc->Sxtrnnum].st_size = Coffset - sfunc->Soffset;
    else
	SymbolTable[sfunc->Sxtrnnum].st_size = Coffset - sfunc->Soffset;
#endif
    if (config.fulltypes)
	dwarf_func_term(sfunc);
}

/********************************
 * Output a public definition.
 * Input:
 *	seg =		segment index that symbol is defined in
 *	s ->		symbol
 *	offset =	offset of name within segment
 */

void objpubdef(int seg, Symbol *s, targ_size_t offset)
{
#if 0
    printf("objpubdef(%d:x%x s=%p, %s)\n", seg, offset, s, s->Sident);
    //symbol_print(s);
#endif
    symbol_debug(s);

    s->Soffset = offset;
    s->Sseg = seg;
    switch (s->Sclass)
    {
	case SCglobal:
	case SCinline:
	    public_symbuf->write(&s, sizeof(s));
	    break;
	case SCcomdat:
	case SCcomdef:
	    public_symbuf->write(&s, sizeof(s));
	    break;
	default:
	    local_symbuf->write(&s, sizeof(s));
	    break;
    }
    //printf("%p\n", *(void**)public_symbuf->buf);
    s->Sxtrnnum = 1;
}

/*******************************
 * Output an external symbol for name.
 * Input:
 *	name	Name to do EXTDEF on
 *		(Not to be mangled)
 * Returns:
 *	Symbol table index of the definition
 *	NOTE: Numbers will not be linear.
 */

int objextern(const char *name)
{   
    //printf("objextdef('%s')\n",name);
    assert(name);
    assert(extdef == 0);
    extdef = elf_addstr(symtab_strings, name);
    return 0;
}

int objextdef(const char *name)
{   
    return objextern(name);
}

/*******************************
 * Output an external for existing symbol.
 * Input:
 *	s	Symbol to do EXTDEF on
 *		(Name is to be mangled)
 * Returns:
 *	Symbol table index of the definition
 *	NOTE: Numbers will not be linear.
 */

int objextern(Symbol *s)
{
    //printf("objextern('%s') %x\n",s->Sident,s->Svalue);
    symbol_debug(s);
    extern_symbuf->write(&s, sizeof(s));
    s->Sxtrnnum = 1;
}

/*******************************
 * Output a common block definition.
 * Input:
 *	p ->	external identifier
 *	size	size in bytes of each elem
 *	count	number of elems
 * Returns:
 *	Symbol table index for symbol
 */

int obj_comdef(Symbol *s,targ_size_t size,targ_size_t count)
{
    //printf("obj_comdef('%s', size=%d, count=%d)\n",s->Sident,size,count);
    symbol_debug(s);

    // can't have code or thread local comdef's
    assert(!(s->ty() & (mTYcs | mTYthread)));

    struct Comdef comdef;
    comdef.sym = s;
    comdef.size = size;
    comdef.count = count;
    comdef_symbuf->write(&comdef, sizeof(comdef));
    s->Sxtrnnum = 1;
    return 0;		// should return void
}

int obj_comdef(Symbol *s, int flag, targ_size_t size, targ_size_t count)
{
    return obj_comdef(s, size, count);
}

/***************************************
 * Append an iterated data block of 0s.
 * (uninitialized data only)
 */

void obj_write_zeros(seg_data *pseg, targ_size_t count)
{
    obj_lidata(pseg->SDseg, pseg->SDoffset, count);
}

/***************************************
 * Output an iterated data block of 0s.
 *
 *	For boundary alignment and initialization
 */

void obj_lidata(int seg,targ_size_t offset,targ_size_t count)
{
    //printf("obj_lidata(%d,%x,%d)\n",seg,offset,count);
    if (SecHdrTab[SegData[seg]->SDshtidx].flags == S_ZEROFILL)
    {	// Use SDoffset to record size of bss section
	SegData[seg]->SDoffset += count;
    }
    else
    {
	obj_bytes(seg, offset, count, NULL);
    }
}

/***********************************
 * Append byte to segment.
 */

void obj_write_byte(seg_data *pseg, unsigned byte)
{
    obj_byte(pseg->SDseg, pseg->SDoffset, byte);
}

/************************************
 * Output byte to object file.
 */

void obj_byte(int seg,targ_size_t offset,unsigned byte)
{
    Outbuffer *buf = SegData[seg]->SDbuf;
    int save = buf->size();
    //dbg_printf("obj_byte(seg=%d, offset=x%lx, byte=x%x)\n",seg,offset,byte);
    buf->setsize(offset);
    buf->writeByte(byte);
    if (save > offset+1)
	buf->setsize(save);
    SegData[seg]->SDoffset = offset+1;
    //dbg_printf("\tsize now %d\n",buf->size());
}

/***********************************
 * Append bytes to segment.
 */

void obj_write_bytes(seg_data *pseg, unsigned nbytes, void *p)
{
    obj_bytes(pseg->SDseg, pseg->SDoffset, nbytes, p);
}

/************************************
 * Output bytes to object file.
 * Returns:
 *	nbytes
 */

unsigned obj_bytes(int seg, targ_size_t offset, unsigned nbytes, void *p)
{
#if 0
    if (!(seg >= 0 && seg <= seg_count))
    {	printf("obj_bytes: seg = %d, seg_count = %d\n", seg, seg_count);
	*(char*)0=0;
    }
#endif
    assert(seg >= 0 && seg <= seg_count);
    Outbuffer *buf = SegData[seg]->SDbuf;
    if (buf == NULL)
    {
	//dbg_printf("obj_bytes(seg=%d, offset=x%lx, nbytes=%d, p=x%x)\n", seg, offset, nbytes, p);
	//raise(SIGSEGV);
if (!buf) halt();
	assert(buf != NULL);
    }
    int save = buf->size();
    //dbg_printf("obj_bytes(seg=%d, offset=x%lx, nbytes=%d, p=x%x)\n",
	    //seg,offset,nbytes,p);
    buf->setsize(offset);
    buf->reserve(nbytes);
    if (p)
    {
	buf->writen(p,nbytes);
    }
    else
    {	// Zero out the bytes
	buf->clearn(nbytes);
    }
    if (save > offset+nbytes)
	buf->setsize(save);
    SegData[seg]->SDoffset = offset+nbytes;
    return nbytes;
}

/*********************************************
 * Add a relocation entry for seg/offset.
 */

void mach_addrel(int seg, targ_size_t offset, symbol *targsym,
	unsigned targseg, int rtype)
{
    Relocation rel;
    rel.offset = offset;
    rel.targsym = targsym;
    rel.targseg = targseg;
    rel.rtype = rtype;
    rel.funcsym = funcsym_p;
    seg_data *pseg = SegData[seg];
    if (!pseg->SDrel)
	pseg->SDrel = new Outbuffer();
    pseg->SDrel->write(&rel, sizeof(rel));
}

/****************************************
 * Sort the relocation entry buffer.
 */

#if __DMC__
static int __cdecl rel_fp(const void *e1, const void *e2)
{   Relocation *r1 = (Relocation *)e1;
    Relocation *r2 = (Relocation *)e2;

    return r1->offset - r2->offset;
}
#else
extern "C" {
static int rel_fp(const void *e1, const void *e2)
{   Relocation *r1 = (Relocation *)e1;
    Relocation *r2 = (Relocation *)e2;

    return r1->offset - r2->offset;
}
}
#endif

void mach_relsort(Outbuffer *buf)
{
    qsort(buf->buf, buf->size() / sizeof(Relocation), sizeof(Relocation), &rel_fp);
}

/*******************************
 * Output a relocation entry for a segment
 * Input:
 *	seg =		where the address is going
 *	offset =	offset within seg
 *	type =		ELF relocation type
 *	index =		Related symbol table index
 *	val =		addend or displacement from address
 */

void elf_addrel(int seg, targ_size_t offset, unsigned type, 
					IDXSYM symidx, targ_size_t val)
{
}

/*******************************
 * Refer to address that is in the data segment.
 * Input:
 *	seg:offset =	the address being fixed up
 *	val =		displacement from start of target segment
 *	targetdatum =	target segment number (DATA, CDATA or UDATA, etc.)
 *	flags =		CFoff, CFseg
 * Example:
 *	int *abc = &def[3];
 *	to allocate storage:
 *		reftodatseg(DATA,offset,3 * sizeof(int *),UDATA);
 */

void reftodatseg(int seg,targ_size_t offset,targ_size_t val,
	unsigned targetdatum,int flags)
{
    Outbuffer *buf = SegData[seg]->SDbuf;
    int save = buf->size();
    buf->setsize(offset);
#if 0
    printf("reftodatseg(seg:offset=%d:x%lx, val=x%lx, targetdatum %x, flags %x )\n",
    	seg,offset,val,targetdatum,flags);
#endif
    if (SegData[seg]->isCode() && SegData[targetdatum]->isCode())
    {
	*(char *)0=0;
	assert(0);
    }
    mach_addrel(seg, offset, NULL, targetdatum, RELaddr);
    if (I64)
	buf->write64(val);
    else
	buf->write32(val);
    if (save > offset + NPTRSIZE)
	buf->setsize(save);
}

/*******************************
 * Refer to address that is in the current function code (funcsym_p).
 * Only offsets are output, regardless of the memory model.
 * Used to put values in switch address tables.
 * Input:
 *	seg =		where the address is going (CODE or DATA)
 *	offset =	offset within seg
 *	val =		displacement from start of this module
 */

void reftocodseg(int seg,targ_size_t offset,targ_size_t val)
{
    printf("reftocodseg(seg=%d, offset=x%lx, val=x%lx )\n",seg,offset,val);
    assert(seg > 0);
    Outbuffer *buf = SegData[seg]->SDbuf;
    int save = buf->size();
    buf->setsize(offset);
    val -= funcsym_p->Soffset;
    mach_addrel(seg, offset, funcsym_p, 0, RELaddr);
    if (I64)
	buf->write64(val);
    else
	buf->write32(val);
    if (save > offset + NPTRSIZE)
	buf->setsize(save);
}

/*******************************
 * Refer to an identifier.
 * Input:
 *	seg =	where the address is going (CODE or DATA)
 *	offset =	offset within seg
 *	s ->		Symbol table entry for identifier
 *	val =		displacement from identifier
 *	flags =		CFselfrel: self-relative
 *			CFseg: get segment
 *			CFoff: get offset
 * Returns:
 *	number of bytes in reference (2 or 4 or 8)
 */

int reftoident(int seg, targ_size_t offset, Symbol *s, targ_size_t val,
	int flags)
{
#if 0
    dbg_printf("\nreftoident('%s' seg %d, offset x%lx, val x%lx, flags x%x)\n",
    	s->Sident,seg,offset,val,flags);
    //dbg_printf("Sseg = %d, Sxtrnnum = %d\n",s->Sseg,s->Sxtrnnum);
    symbol_print(s);
#endif
    assert(seg > 0);
    if (s->Sclass != SClocstat && !s->Sxtrnnum)
    {	// It may get defined later as public or local, so defer
	addtofixlist(s, offset, seg, val, flags);
    }
    else
    {
	if (SegData[seg]->isCode() && flags & CFselfrel)
	{
	    if (!jumpTableSeg)
	    {
		jumpTableSeg =
		    mach_getsegment("__jump_table", "__IMPORT",  0, S_SYMBOL_STUBS | S_ATTR_PURE_INSTRUCTIONS | S_ATTR_SOME_INSTRUCTIONS | S_ATTR_SELF_MODIFYING_CODE);
	    }
	    seg_data *pseg = SegData[jumpTableSeg];
	    SecHdrTab[pseg->SDshtidx].reserved2 = 5;

	    if (!indirectsymbuf1)
		indirectsymbuf1 = new Outbuffer();
	    else
	    {	// Look through indirectsym to see if it is already there
		int n = indirectsymbuf1->size() / sizeof(Symbol *);
		Symbol **psym = (Symbol **)indirectsymbuf1->buf;
		for (int i = 0; i < n; i++)
		{   // Linear search, pretty pathetic
		    if (s == psym[i])
		    {	val = i * 5;
			goto L1;
		    }
		}
	    }

	    val = pseg->SDbuf->size();
	    static char halts[5] = { 0xF4,0xF4,0xF4,0xF4,0xF4 };
	    pseg->SDbuf->write(halts, 5);

	    // Add symbol s to indirectsymbuf1
	    indirectsymbuf1->write(&s, sizeof(Symbol *));
	 L1:
	    val -= offset + 4;
	    mach_addrel(seg, offset, NULL, jumpTableSeg, RELrel);
	}
	else if (SegData[seg]->isCode() &&
		((s->Sclass != SCextern && SegData[s->Sseg]->isCode()) || s->Sclass == SClocstat || s->Sclass == SCstatic))
	{
	    val += s->Soffset;
	    mach_addrel(seg, offset, NULL, s->Sseg, RELaddr);
	}
	else if (SegData[seg]->isCode() && !tyfunc(s->ty()))
	{
	    if (!pointersSeg)
	    {
		pointersSeg =
		    mach_getsegment("__pointers", "__IMPORT",  0, S_NON_LAZY_SYMBOL_POINTERS);
	    }
	    seg_data *pseg = SegData[pointersSeg];

	    if (!indirectsymbuf2)
		indirectsymbuf2 = new Outbuffer();
	    else
	    {	// Look through indirectsym to see if it is already there
		int n = indirectsymbuf2->size() / sizeof(Symbol *);
		Symbol **psym = (Symbol **)indirectsymbuf2->buf;
		for (int i = 0; i < n; i++)
		{   // Linear search, pretty pathetic
		    if (s == psym[i])
		    {	val = i * 4;
			goto L2;
		    }
		}
	    }

	    val = pseg->SDbuf->size();
	    pseg->SDbuf->writezeros(NPTRSIZE);

	    // Add symbol s to indirectsymbuf2
	    indirectsymbuf2->write(&s, sizeof(Symbol *));

	 L2:
	    //printf("reftoident: seg = %d, offset = x%x, s = %s, val = x%x, pointersSeg = %d\n", seg, offset, s->Sident, val, pointersSeg);
	    mach_addrel(seg, offset, NULL, pointersSeg, RELaddr);
	}
	else
	{   //val -= s->Soffset;
	    mach_addrel(seg, offset, s, 0, RELaddr);
	}

	Outbuffer *buf = SegData[seg]->SDbuf;
	int save = buf->size();
	buf->setsize(offset);
	if (I64)
	    buf->write64(val);
	else
	    buf->write32(val);
	if (save > offset + NPTRSIZE)
	    buf->setsize(save);
    }
    return NPTRSIZE;
}

/*****************************************
 * Generate far16 thunk.
 * Input:
 *	s	Symbol to generate a thunk for
 */

void obj_far16thunk(Symbol *s)
{
    //dbg_printf("obj_far16thunk('%s')\n", s->Sident);
    assert(0);
}

/**************************************
 * Mark object file as using floating point.
 */

void obj_fltused()
{
    //dbg_printf("obj_fltused()\n");
}

/************************************
 * Close and delete .OBJ file.
 */

void objfile_delete()
{
    //remove(fobjname);	// delete corrupt output file
}

/**********************************
 * Terminate.
 */

void objfile_term()
{
#if TERMCODE
    mem_free(fobjname);
    fobjname = NULL;
#endif
}

/**********************************
  * Write to the object file
  */
void objfile_write(FILE *fd, void *buffer, unsigned len)
{
    fobjbuf->write(buffer, len);
}

long elf_align(targ_size_t size, long foffset)
{
    long offset;
    switch (size)
    {
	case 0:
	case 1:
	    return foffset;
	case 2:
	    offset = (foffset + 1) & ~1;
	    break;
	case 4:
	    offset = (foffset + 3) & ~3;
	    break;
	case 8:
	    offset = (foffset + 7) & ~7;
	    break;
	case 16:
	    offset = (foffset + 15) & ~15;
	    break;
	case 32:
	    offset = (foffset + 31) & ~31;
	    break;
	default:
	    dbg_printf("size was %lu\n",size);
	    assert(0);
	    break;
    }
    if (offset > foffset)
	fobjbuf->writezeros(offset - foffset);
    return offset;
}

/***************************************
 * Stuff pointer to ModuleInfo in its own segment.
 */

#if MARS

void obj_moduleinfo(Symbol *scc)
{
    int align = I64 ? 4 : 2;

    mach_getsegment("__minfo_beg", "__DATA", align, S_REGULAR);

    int seg = mach_getsegment("__minfodata", "__DATA", align, S_REGULAR);
    //printf("obj_moduleinfo(%s) seg = %d:x%x\n", scc->Sident, seg, Offset(seg));

#if 0
    type *t = type_fake(TYint);
    t->Tmangle = mTYman_c;
    char *p = (char *)malloc(5 + strlen(scc->Sident) + 1);
    strcpy(p, "SUPER");
    strcpy(p + 5, scc->Sident);
    symbol *s_minfo_beg = symbol_name(p, SCglobal, t);
    objpubdef(seg, s_minfo_beg, 0);
#endif

    SegData[seg]->SDoffset += reftoident(seg, Offset(seg), scc, 0, CFoff);

    mach_getsegment("__minfo_end", "__DATA", align, S_REGULAR);
}

#endif

/************************************
 * Output long word of data.
 * Input:
 *	seg	CODE, DATA, CDATA, UDATA
 *	offset	offset of start of data
 *	data	long word of data
 *   Present only if size == 2:
 *	lcfd	LCxxxx | FDxxxx
 *	if (FD_F2 | FD_T6)
 *		idx1 = external Symbol #
 *	else
 *		idx1 = frame datum
 *		idx2 = target datum
 */

void obj_long(int seg,targ_size_t offset,unsigned long data,
	unsigned lcfd,unsigned idx1,unsigned idx2)
{ 
    printf("obj_long\n");
    exit(1);
}

/*************************************
 */

void elfobj_gotref(symbol *s)
{
    //printf("elfobj_gotref(%x '%s', %d)\n",s,s->Sident, s->Sclass);
    switch(s->Sclass)
    {
	case SCstatic:
	case SClocstat:
	    s->Sfl = FLgotoff;
	    break;

	case SCextern:
	case SCglobal:
	case SCcomdat:
	case SCcomdef:
	    s->Sfl = FLgot;
	    break;

	default:
	    break;
    }
}

#endif
#endif
