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src/tcccoff.c  view on Meta::CPAN

int OutputTheSection(Section * sect);
short int GetCoffFlags(const char *s);
void SortSymbolTable(void);
Section *FindSection(TCCState * s1, const char *sname);

int C67_main_entry_point;

int FindCoffSymbolIndex(const char *func_name);
int nb_syms;

typedef struct {
    long tag;
    long size;
    long fileptr;
    long nextsym;
    short int dummy;
} AUXFUNC;

typedef struct {
    long regmask;
    unsigned short lineno;
    unsigned short nentries;
    int localframe;
    int nextentry;
    short int dummy;
} AUXBF;

typedef struct {
    long dummy;
    unsigned short lineno;
    unsigned short dummy1;
    int dummy2;
    int dummy3;
    unsigned short dummy4;
} AUXEF;

ST_FUNC int tcc_output_coff(TCCState *s1, FILE *f)
{
    Section *tcc_sect;
    SCNHDR *coff_sec;
    int file_pointer;
    char *Coff_str_table, *pCoff_str_table;
    int CoffTextSectionNo, coff_nb_syms;
    FILHDR file_hdr;		/* FILE HEADER STRUCTURE              */
    Section *stext, *sdata, *sbss;
    int i, NSectionsToOutput = 0;

    Coff_str_table = pCoff_str_table = NULL;

    stext = FindSection(s1, ".text");
    sdata = FindSection(s1, ".data");
    sbss = FindSection(s1, ".bss");

    nb_syms = symtab_section->data_offset / sizeof(Elf32_Sym);
    coff_nb_syms = FindCoffSymbolIndex("XXXXXXXXXX1");

    file_hdr.f_magic = COFF_C67_MAGIC;	/* magic number */
    file_hdr.f_timdat = 0;	/* time & date stamp */
    file_hdr.f_opthdr = sizeof(AOUTHDR);	/* sizeof(optional hdr) */
    file_hdr.f_flags = 0x1143;	/* flags (copied from what code composer does) */
    file_hdr.f_TargetID = 0x99;	/* for C6x = 0x0099 */

    o_filehdr.magic = 0x0108;	/* see magic.h                          */
    o_filehdr.vstamp = 0x0190;	/* version stamp                        */
    o_filehdr.tsize = stext->data_offset;	/* text size in bytes, padded to FW bdry */
    o_filehdr.dsize = sdata->data_offset;	/* initialized data "  "                */
    o_filehdr.bsize = sbss->data_offset;	/* uninitialized data "   "             */
    o_filehdr.entrypt = C67_main_entry_point;	/* entry pt.                          */
    o_filehdr.text_start = stext->sh_addr;	/* base of text used for this file      */
    o_filehdr.data_start = sdata->sh_addr;	/* base of data used for this file      */


    // create all the section headers

    file_pointer = FILHSZ + sizeof(AOUTHDR);

    CoffTextSectionNo = -1;

    for (i = 1; i < s1->nb_sections; i++) {
	coff_sec = &section_header[i];
	tcc_sect = s1->sections[i];

	if (OutputTheSection(tcc_sect)) {
	    NSectionsToOutput++;

	    if (CoffTextSectionNo == -1 && tcc_sect == stext)
		CoffTextSectionNo = NSectionsToOutput;	// rem which coff sect number the .text sect is

	    strcpy(coff_sec->s_name, tcc_sect->name);	/* section name */

	    coff_sec->s_paddr = tcc_sect->sh_addr;	/* physical address */
	    coff_sec->s_vaddr = tcc_sect->sh_addr;	/* virtual address */
	    coff_sec->s_size = tcc_sect->data_offset;	/* section size */
	    coff_sec->s_scnptr = 0;	/* file ptr to raw data for section */
	    coff_sec->s_relptr = 0;	/* file ptr to relocation */
	    coff_sec->s_lnnoptr = 0;	/* file ptr to line numbers */
	    coff_sec->s_nreloc = 0;	/* number of relocation entries */
	    coff_sec->s_flags = GetCoffFlags(coff_sec->s_name);	/* flags */
	    coff_sec->s_reserved = 0;	/* reserved byte */
	    coff_sec->s_page = 0;	/* memory page id */

	    file_pointer += sizeof(SCNHDR);
	}
    }

    file_hdr.f_nscns = NSectionsToOutput;	/* number of sections */

    // now loop through and determine file pointer locations
    // for the raw data


    for (i = 1; i < s1->nb_sections; i++) {
	coff_sec = &section_header[i];
	tcc_sect = s1->sections[i];

	if (OutputTheSection(tcc_sect)) {
	    // put raw data
	    coff_sec->s_scnptr = file_pointer;	/* file ptr to raw data for section */
	    file_pointer += coff_sec->s_size;
	}
    }

    // now loop through and determine file pointer locations
    // for the relocation data

    for (i = 1; i < s1->nb_sections; i++) {
	coff_sec = &section_header[i];
	tcc_sect = s1->sections[i];

	if (OutputTheSection(tcc_sect)) {
	    // put relocations data
	    if (coff_sec->s_nreloc > 0) {
		coff_sec->s_relptr = file_pointer;	/* file ptr to relocation */
		file_pointer += coff_sec->s_nreloc * sizeof(struct reloc);
	    }
	}
    }

    // now loop through and determine file pointer locations
    // for the line number data

    for (i = 1; i < s1->nb_sections; i++) {
	coff_sec = &section_header[i];
	tcc_sect = s1->sections[i];

	coff_sec->s_nlnno = 0;
	coff_sec->s_lnnoptr = 0;

	if (s1->do_debug && tcc_sect == stext) {
	    // count how many line nos data

	    // also find association between source file name and function
	    // so we can sort the symbol table


	    Stab_Sym *sym, *sym_end;
	    char func_name[MAX_FUNC_NAME_LENGTH],
		last_func_name[MAX_FUNC_NAME_LENGTH];