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/*** coff information for TI TMS320C80 (MVP) */
/********************** FILE HEADER **********************/
struct external_filehdr {
char f_magic[2]; /* magic number */
char f_nscns[2]; /* number of sections */
char f_timdat[4]; /* time & date stamp */
char f_symptr[4]; /* file pointer to symtab */
char f_nsyms[4]; /* number of symtab entries */
char f_opthdr[2]; /* sizeof(optional hdr) */
char f_flags[2]; /* flags */
char f_target_id[2]; /* target id (TIc80 specific) */
};
#define TIC80_ARCH_MAGIC 0x0C1 /* Goes in the file header magic number field */
#define TIC80_TARGET_ID 0x95 /* Goes in the target id field */
#define TIC80BADMAG(x) ((x).f_magic != TIC80_ARCH_MAGIC)
#define FILHDR struct external_filehdr
#define FILHSZ 22
/********************** AOUT "OPTIONAL HEADER" **********************/
typedef struct
{
char magic[2]; /* type of file */
char vstamp[2]; /* version stamp */
char tsize[4]; /* text size in bytes, padded to FW bdry*/
char dsize[4]; /* initialized data " " */
char bsize[4]; /* uninitialized data " " */
char entry[4]; /* entry pt. */
char text_start[4]; /* base of text used for this file */
char data_start[4]; /* base of data used for this file */
}
AOUTHDR;
#define TIC80_AOUTHDR_MAGIC 0x108 /* Goes in the optional file header magic number field */
#define AOUTHDRSZ 28
#define AOUTSZ 28
/********************** SECTION HEADER **********************/
struct external_scnhdr {
char s_name[8]; /* section name */
char s_paddr[4]; /* physical address, aliased s_nlib */
char s_vaddr[4]; /* virtual address */
char s_size[4]; /* section size */
char s_scnptr[4]; /* file ptr to raw data for section */
char s_relptr[4]; /* file ptr to relocation */
char s_lnnoptr[4]; /* file ptr to line numbers */
char s_nreloc[2]; /* number of relocation entries */
char s_nlnno[2]; /* number of line number entries*/
char s_flags[2]; /* flags */
char s_reserved[1]; /* reserved (TIc80 specific) */
char s_mempage[1]; /* memory page number (TIc80) */
};
/*
* names of "special" sections
*/
#define _TEXT ".text"
#define _DATA ".data"
#define _BSS ".bss"
#define _CINIT ".cinit"
#define _CONST ".const"
#define _SWITCH ".switch"
#define _STACK ".stack"
#define _SYSMEM ".sysmem"
#define SCNHDR struct external_scnhdr
#define SCNHSZ 40
/********************** LINE NUMBERS **********************/
/* 1 line number entry for every "breakpointable" source line in a section.
* Line numbers are grouped on a per function basis; first entry in a function
* grouping will have l_lnno = 0 and in place of physical address will be the
* symbol table index of the function name.
*/
struct external_lineno {
union {
char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/
char l_paddr[4]; /* (physical) address of line number */
} l_addr;
char l_lnno[2]; /* line number */
};
#define GET_LINENO_LNNO(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *) (ext->l_lnno));
#define PUT_LINENO_LNNO(abfd,val, ext) bfd_h_put_16(abfd,val, (bfd_byte *) (ext->l_lnno));
#define LINENO struct external_lineno
#define LINESZ 6
/********************** SYMBOLS **********************/
#define E_SYMNMLEN 8 /* # characters in a symbol name */
#define E_FILNMLEN 14 /* # characters in a file name */
#define E_DIMNUM 4 /* # array dimensions in auxiliary entry */
struct external_syment
{
union {
char e_name[E_SYMNMLEN];
struct {
char e_zeroes[4];
char e_offset[4];
} e;
} e;
char e_value[4];
char e_scnum[2];
char e_type[2];
char e_sclass[1];
char e_numaux[1];
};
#define N_BTMASK (017)
#define N_TMASK (060)
#define N_BTSHFT (4)
#define N_TSHIFT (2)
/* FIXME - need to correlate with TIc80 Code Generation Tools User's Guide, CG:A-25 */
union external_auxent {
struct {
char x_tagndx[4]; /* str, un, or enum tag indx */
union {
struct {
char x_lnno[2]; /* declaration line number */
char x_size[2]; /* str/union/array size */
} x_lnsz;
char x_fsize[4]; /* size of function */
} x_misc;
union {
struct { /* if ISFCN, tag, or .bb */
char x_lnnoptr[4]; /* ptr to fcn line # */
char x_endndx[4]; /* entry ndx past block end */
} x_fcn;
struct { /* if ISARY, up to 4 dimen. */
char x_dimen[E_DIMNUM][2];
} x_ary;
} x_fcnary;
char x_tvndx[2]; /* tv index */
} x_sym;
union {
char x_fname[E_FILNMLEN];
struct {
char x_zeroes[4];
char x_offset[4];
} x_n;
} x_file;
struct {
char x_scnlen[4]; /* section length */
char x_nreloc[2]; /* # relocation entries */
char x_nlinno[2]; /* # line numbers */
} x_scn;
struct {
char x_tvfill[4]; /* tv fill value */
char x_tvlen[2]; /* length of .tv */
char x_tvran[2][2]; /* tv range */
} x_tv; /* info about .tv section (in auxent of symbol .tv)) */
};
#define SYMENT struct external_syment
#define SYMESZ 18
#define AUXENT union external_auxent
#define AUXESZ 18
/********************** RELOCATION DIRECTIVES **********************/
/* The external reloc has an offset field, because some of the reloc
types on the h8 don't have room in the instruction for the entire
offset - eg the strange jump and high page addressing modes */
struct external_reloc {
char r_vaddr[4];
char r_symndx[4];
char r_reserved[2];
char r_type[2];
};
#define RELOC struct external_reloc
#define RELSZ 12
/* TIc80 relocation types. */
#define R_ABS 0x00 /* Absolute address - no relocation */
#define R_RELLONGX 0x11 /* PP: 32 bits, direct */
#define R_PPBASE 0x34 /* PP: Global base address type */
#define R_PPLBASE 0x35 /* PP: Local base address type */
#define R_PP15 0x38 /* PP: Global 15 bit offset */
#define R_PP15W 0x39 /* PP: Global 15 bit offset divided by 4 */
#define R_PP15H 0x3A /* PP: Global 15 bit offset divided by 2 */
#define R_PP16B 0x3B /* PP: Global 16 bit offset for bytes */
#define R_PPL15 0x3C /* PP: Local 15 bit offset */
#define R_PPL15W 0x3D /* PP: Local 15 bit offset divided by 4 */
#define R_PPL15H 0x3E /* PP: Local 15 bit offset divided by 2 */
#define R_PPL16B 0x3F /* PP: Local 16 bit offset for bytes */
#define R_PPN15 0x40 /* PP: Global 15 bit negative offset */
#define R_PPN15W 0x41 /* PP: Global 15 bit negative offset divided by 4 */
#define R_PPN15H 0x42 /* PP: Global 15 bit negative offset divided by 2 */
#define R_PPN16B 0x43 /* PP: Global 16 bit negative byte offset */
#define R_PPLN15 0x44 /* PP: Local 15 bit negative offset */
#define R_PPLN15W 0x45 /* PP: Local 15 bit negative offset divided by 4 */
#define R_PPLN15H 0x46 /* PP: Local 15 bit negative offset divided by 2 */
#define R_PPLN16B 0x47 /* PP: Local 16 bit negative byte offset */
#define R_MPPCR15W 0x4E /* MP: 15 bit PC-relative divided by 4 */
#define R_MPPCR 0x4F /* MP: 32 bit PC-relative divided by 4 */
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