From eaa0f4f8e61f4f93088f11143199ebe5986368f8 Mon Sep 17 00:00:00 2001 From: Steve Chamberlain Date: Tue, 25 Aug 1992 22:07:19 +0000 Subject: [PATCH] Support for the Z8000 --- include/coff/.Sanitize | 2 +- include/coff/ChangeLog | 13 ++- include/coff/internal.h | 21 +++- include/coff/z8k.h | 206 ++++++++++++++++++++++++++++++++++++++++ 4 files changed, 237 insertions(+), 5 deletions(-) create mode 100644 include/coff/z8k.h diff --git a/include/coff/.Sanitize b/include/coff/.Sanitize index 324a39871a..cf1f0e1e41 100644 --- a/include/coff/.Sanitize +++ b/include/coff/.Sanitize @@ -38,7 +38,7 @@ mips.h rs6000.h sym.h symconst.h - +z8k.h Do-last: echo Done in `pwd`. diff --git a/include/coff/ChangeLog b/include/coff/ChangeLog index 90665ba215..2dade78ea3 100644 --- a/include/coff/ChangeLog +++ b/include/coff/ChangeLog @@ -1,9 +1,20 @@ +Tue Aug 25 15:06:49 1992 Steve Chamberlain (sac@thepub.cygnus.com) + + * z8k.h: added z8000 support + +Thu Jul 16 16:32:00 1992 Steve Chamberlain (sac@thepub.cygnus.com) + + * internal.h: added R_RELLONG_NEG reloc type + +Fri Jun 12 20:11:04 1992 John Gilmore (gnu at cygnus.com) + + * symconst.h: Fix unterminated comment. + Wed Jun 10 07:57:49 1992 Steve Chamberlain (sac@thepub.cygnus.com) * i386.h: a.out magic numbers from mohring@informatik.tu-muenchen.de - Mon Jun 8 20:13:33 1992 John Gilmore (gnu at cygnus.com) * ecoff-ext.h, mips.h: Use unsigned chars everywhere. diff --git a/include/coff/internal.h b/include/coff/internal.h index 62820dfab8..be1316a3d4 100644 --- a/include/coff/internal.h +++ b/include/coff/internal.h @@ -417,9 +417,6 @@ struct internal_reloc #define R_RELBYTE 017 #define R_RELWORD 020 -#define R_PCRBYTE 022 -#define R_PCRWORD 023 -#define R_PCRLONG 024 #define R_PCR16L 128 @@ -444,3 +441,21 @@ struct internal_reloc #define R_JMP1 0x43 /* Special h8 16bit jmp which could be pcrel */ #define R_JMP2 0x44 /* a branch which used to be a jmp */ +#define R_RELLONG_NEG 0x45 + + +/* Z8k modes */ +#define R_DA 0x01 /* Absolute direct address */ +#define R_CALL 0x02 /* Absolute address which could be a callr */ +#define R_JP 0x03 /* Absolute address which could be a jp */ +#define R_REL16 0x04 /* 16 bit PC rel */ + +#define R_CALLR 0x05 /* callr 12 bit disp */ +#define R_JR 0x06 /* jr 8 bit disp */ +#define R_SEG 0x10 /* set if in segmented mode */ + +#define R_IMM16 0x20 /* 16 bit abs */ +#define R_IMM32 0x21 /* 32 bit abs */ +#define R_IMM8 0x22 /* 8 bit abs */ +#define R_IMM4L 0x23 /* low nibble */ +#define R_IMM4H 0x24 /* high nibble */ diff --git a/include/coff/z8k.h b/include/coff/z8k.h new file mode 100644 index 0000000000..4cc62188cd --- /dev/null +++ b/include/coff/z8k.h @@ -0,0 +1,206 @@ +/*** coff information for Zilog Z800N */ + +/********************** 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 */ +}; + + +/* Type of cpu is stored in flags */ +#define F_Z8001 0x1000 +#define F_Z8002 0x2000 +#define F_MACHMASK 0xf000 + +#define Z8KMAGIC 0x8000 + +#define Z8KBADMAG(x) (((x).f_magic!=Z8KMAGIC)) + +#define FILHDR struct external_filehdr +#define FILHSZ sizeof(FILHDR) + + +/********************** 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 (sizeof(AOUTHDR)) +#define AOUTSZ (sizeof(AOUTHDR)) + + + + +/********************** 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 sizeof(SCNHDR) + + +/********************** 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 sizeof(LINENO) + + +/********************** 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 + +#define DEFAULT_DATA_SECTION_ALIGNMENT 4 +#define DEFAULT_BSS_SECTION_ALIGNMENT 4 +#define DEFAULT_TEXT_SECTION_ALIGNMENT 4 +/* For new sections we havn't heard of before */ +#define DEFAULT_SECTION_ALIGNMENT 4 -- 2.34.1