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/*** coff information for Hitachi SH */
/********************** 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 */
};
#define SH_ARCH_MAGIC_BIG 0x0500
#define SH_ARCH_MAGIC_LITTLE 0x0550 /* Little endian SH */
#define SHBADMAG(x) \
(((x).f_magic!=SH_ARCH_MAGIC_BIG) && \
((x).f_magic!=SH_ARCH_MAGIC_LITTLE))
#define FILHDR struct external_filehdr
#define FILHSZ 20
/********************** 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 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[4]; /* flags */
};
/*
* names of "special" sections
*/
#define _TEXT ".text"
#define _DATA ".data"
#define _BSS ".bss"
#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[4]; /* line number */
};
#define GET_LINENO_LNNO(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) (ext->l_lnno));
#define PUT_LINENO_LNNO(abfd,val, ext) bfd_h_put_32(abfd,val, (bfd_byte *) (ext->l_lnno));
#define LINENO struct external_lineno
#define LINESZ 8
/********************** 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)
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_offset[4];
char r_type[2];
char r_stuff[2];
};
#define RELOC struct external_reloc
#define RELSZ 16
/* SH relocation types. Not all of these are actually used. */
#define R_SH_UNUSED 0 /* only used internally */
#define R_SH_PCREL8 3 /* 8 bit pcrel */
#define R_SH_PCREL16 4 /* 16 bit pcrel */
#define R_SH_HIGH8 5 /* high 8 bits of 24 bit address */
#define R_SH_LOW16 7 /* low 16 bits of 24 bit immediate */
#define R_SH_IMM24 6 /* 24 bit immediate */
#define R_SH_PCDISP8BY4 9 /* PC rel 8 bits *4 +ve */
#define R_SH_PCDISP8BY2 10 /* PC rel 8 bits *2 +ve */
#define R_SH_PCDISP8 11 /* 8 bit branch */
#define R_SH_PCDISP 12 /* 12 bit branch */
#define R_SH_IMM32 14 /* 32 bit immediate */
#define R_SH_IMM8 16 /* 8 bit immediate */
#define R_SH_IMM8BY2 17 /* 8 bit immediate *2 */
#define R_SH_IMM8BY4 18 /* 8 bit immediate *4 */
#define R_SH_IMM4 19 /* 4 bit immediate */
#define R_SH_IMM4BY2 20 /* 4 bit immediate *2 */
#define R_SH_IMM4BY4 21 /* 4 bit immediate *4 */
#define R_SH_PCRELIMM8BY2 22 /* PC rel 8 bits *2 unsigned */
#define R_SH_PCRELIMM8BY4 23 /* PC rel 8 bits *4 unsigned */
#define R_SH_IMM16 24 /* 16 bit immediate */
/* The switch table reloc types are used for relaxing. They are
generated for expressions such as
.word L1 - L2
The r_offset field holds the difference between the reloc address
and L2. */
#define R_SH_SWITCH8 33 /* 8 bit switch table entry */
#define R_SH_SWITCH16 25 /* 16 bit switch table entry */
#define R_SH_SWITCH32 26 /* 32 bit switch table entry */
/* The USES reloc type is used for relaxing. The compiler will
generate .uses pseudo-ops when it finds a function call which it
can relax. The r_offset field of the USES reloc holds the PC
relative offset to the instruction which loads the register used in
the function call. */
#define R_SH_USES 27 /* .uses pseudo-op */
/* The COUNT reloc type is used for relaxing. The assembler will
generate COUNT relocs for addresses referred to by the register
loads associated with USES relocs. The r_offset field of the COUNT
reloc holds the number of times the address is referenced in the
object file. */
#define R_SH_COUNT 28 /* Count of constant pool uses */
/* The ALIGN reloc type is used for relaxing. The r_offset field is
the power of two to which subsequent portions of the object file
must be aligned. */
#define R_SH_ALIGN 29 /* .align pseudo-op */
/* The CODE and DATA reloc types are used for aligning load and store
instructions. The assembler will generate a CODE reloc before a
block of instructions. It will generate a DATA reloc before data.
A section should be processed assuming it contains data, unless a
CODE reloc is seen. The only relevant pieces of information in the
CODE and DATA relocs are the section and the address. The symbol
and offset are meaningless. */
#define R_SH_CODE 30 /* start of code */
#define R_SH_DATA 31 /* start of data */
/* The LABEL reloc type is used for aligning load and store
instructions. The assembler will generate a LABEL reloc for each
label within a block of instructions. This permits the linker to
avoid swapping instructions which are the targets of branches. */
#define R_SH_LABEL 32 /* label */
/* NB: R_SH_SWITCH8 is 33 */
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