| /* coff information for 80960. Origins: Intel corp, natch. |
| |
| Copyright 2001, 2010 Free Software Foundation, Inc. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| MA 02110-1301, USA. */ |
| |
| /* NOTE: Tagentries (cf TAGBITS) are no longer used by the 960 */ |
| |
| /********************** 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 OMAGIC (0407) /* old impure format. data immediately |
| follows text. both sections are rw. */ |
| #define NMAGIC (0410) /* split i&d, read-only text */ |
| |
| /* |
| * Intel 80960 (I960) processor flags. |
| * F_I960TYPE == mask for processor type field. |
| */ |
| |
| #define F_I960TYPE (0xf000) |
| #define F_I960CORE (0x1000) |
| #define F_I960KB (0x2000) |
| #define F_I960SB (0x2000) |
| #define F_I960MC (0x3000) |
| #define F_I960XA (0x4000) |
| #define F_I960CA (0x5000) |
| #define F_I960KA (0x6000) |
| #define F_I960SA (0x6000) |
| #define F_I960JX (0x7000) |
| #define F_I960HX (0x8000) |
| |
| |
| /** i80960 Magic Numbers |
| */ |
| |
| #define I960ROMAGIC (0x160) /* read-only text segments */ |
| #define I960RWMAGIC (0x161) /* read-write text segments */ |
| |
| #define I960BADMAG(x) (((x).f_magic!=I960ROMAGIC) && ((x).f_magic!=I960RWMAGIC)) |
| |
| #define FILHDR struct external_filehdr |
| #define FILHSZ 20 |
| |
| /********************** AOUT "OPTIONAL HEADER" **********************/ |
| |
| typedef struct |
| { |
| unsigned long phys_addr; |
| unsigned long bitarray; |
| } TAGBITS; |
| |
| 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 */ |
| char tagentries[4]; /* number of tag entries to follow */ |
| } |
| AOUTHDR; |
| |
| /* return a pointer to the tag bits array */ |
| |
| #define TAGPTR(aout) ((TAGBITS *) (&(aout.tagentries)+1)) |
| |
| /* compute size of a header */ |
| |
| /*#define AOUTSZ(aout) (sizeof(AOUTHDR)+(aout.tagentries*sizeof(TAGBITS)))*/ |
| #define AOUTSZ 32 |
| #define AOUTHDRSZ 32 |
| |
| |
| /********************** 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 */ |
| char s_align[4]; /* section alignment */ |
| }; |
| |
| |
| #define SCNHDR struct external_scnhdr |
| #define SCNHSZ 44 |
| |
| /* |
| * names of "special" sections |
| */ |
| #define _TEXT ".text" |
| #define _DATA ".data" |
| #define _BSS ".bss" |
| |
| /********************** 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 */ |
| char padding[2]; /* force alignment */ |
| }; |
| |
| |
| #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_flags[2]; |
| char e_type[4]; |
| char e_sclass[1]; |
| char e_numaux[1]; |
| char pad2[2]; |
| }; |
| |
| #define N_BTMASK (0x1f) |
| #define N_TMASK (0x60) |
| #define N_BTSHFT (5) |
| #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)) */ |
| |
| /****************************************** |
| * I960-specific *2nd* aux. entry formats |
| ******************************************/ |
| struct |
| { |
| /* This is a very old typo that keeps getting propagated. */ |
| #define x_stdindx x_stindx |
| char x_stindx[4]; /* sys. table entry */ |
| } x_sc; /* system call entry */ |
| |
| struct |
| { |
| char x_balntry[4]; /* BAL entry point */ |
| } x_bal; /* BAL-callable function */ |
| |
| struct |
| { |
| char x_timestamp[4]; /* time stamp */ |
| char x_idstring[20]; /* producer identity string */ |
| |
| } x_ident; /* Producer ident info */ |
| }; |
| |
| #define SYMENT struct external_syment |
| #define SYMESZ 24 |
| #define AUXENT union external_auxent |
| #define AUXESZ 24 |
| |
| # define _ETEXT "_etext" |
| |
| /********************** RELOCATION DIRECTIVES **********************/ |
| |
| struct external_reloc |
| { |
| char r_vaddr[4]; |
| char r_symndx[4]; |
| char r_type[2]; |
| char pad[2]; |
| }; |
| |
| /* r_type values for the i960. */ |
| |
| /* The i960 uses R_RELLONG, which is defined in internal.h as 0x11. |
| It is an absolute 32 bit relocation. */ |
| |
| #define R_IPRMED (0x19) /* 24-bit ip-relative relocation */ |
| #define R_OPTCALL (0x1b) /* 32-bit optimizable call (leafproc/sysproc) */ |
| #define R_OPTCALLX (0x1c) /* 64-bit optimizable call (leafproc/sysproc) */ |
| |
| /* The following relocation types are defined use by relaxing linkers, |
| which convert 32 bit calls (which require a 64 bit instruction) |
| into 24 bit calls (which require a 32 bit instruction) when |
| possible. It will be possible whenever the target of the call is |
| within a 24 bit range of the call instruction. |
| |
| It is always safe to ignore these relocations. They only serve to |
| mark points which the relaxing linker will have to consider. The |
| assembler must ensure that the correct code is generated even if |
| the relocations are ignored. In particular, this means that the |
| R_IPR13 relocation may not appear with an external symbol. */ |
| |
| #define R_IPR13 (0x1d) /* 13 bit ip-relative branch */ |
| #define R_ALIGN (0x1e) /* alignment marker. This has no |
| associated symbol. Instead, the |
| r_symndx field indicates the |
| require alignment at this point in |
| the file. It must be a power of 2. */ |
| |
| #define RELOC struct external_reloc |
| #define RELSZ 12 |
| |
