diff options
Diffstat (limited to 'include')
| -rwxr-xr-x | include/a.out.encap.h | 172 | ||||
| -rwxr-xr-x | include/ranlib.h | 55 | ||||
| -rwxr-xr-x | include/stab.def | 182 | ||||
| -rwxr-xr-x | include/stab.gnu.h | 16 |
4 files changed, 425 insertions, 0 deletions
diff --git a/include/a.out.encap.h b/include/a.out.encap.h new file mode 100755 index 0000000..39c84d7 --- /dev/null +++ b/include/a.out.encap.h @@ -0,0 +1,172 @@ +/* Another try at encapsulating bsd object files in coff. + Copyright (C) 1988, 1989, Free Software Foundation, Inc. + Written by Pace Willisson 12/9/88 + + This file 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 1, or (at your option) + any later version. + + This file 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 file; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +/* + * This time, we will only use the coff headers to tell the kernel + * how to exec the file. Therefore, the only fields that need to + * be filled in are the scnptr and vaddr for the text and data + * sections, and the vaddr for the bss. As far as coff is concerned, + * there is no symbol table, relocation, or line numbers. + * + * A normal bsd header (struct exec) is placed after the coff headers, + * and before the real text. I defined a the new fields 'a_machtype' + * and a_flags. If a_machtype is M_386, and a_flags & A_ENCAP is + * true, then the bsd header is preceeded by a coff header. Macros + * like N_TXTOFF and N_TXTADDR use this field to find the bsd header. + * + * The only problem is to track down the bsd exec header. The + * macros HEADER_OFFSET, etc do this. Look at nm.c, dis.c, etc + * for examples. + */ +#ifndef A_OUT_ENCAP_H_SEEN +#define A_OUT_ENCAP_H_SEEN + +#include "a.out.gnu.h" + +/* Figure out what our target machine is */ +#include "target.h" + +#define N_FLAGS_COFF_ENCAPSULATE 0x20 /* coff header precedes bsd header */ + +/* Describe the COFF header used for encapsulation. */ + +struct coffheader +{ + /* filehdr */ + unsigned short f_magic; + unsigned short f_nscns; + long f_timdat; + long f_symptr; + long f_nsyms; + unsigned short f_opthdr; + unsigned short f_flags; + /* aouthdr */ + short magic; + short vstamp; + long tsize; + long dsize; + long bsize; + long entry; + long text_start; + long data_start; + struct coffscn + { + char s_name[8]; + long s_paddr; + long s_vaddr; + long s_size; + long s_scnptr; + long s_relptr; + long s_lnnoptr; + unsigned short s_nreloc; + unsigned short s_nlnno; + long s_flags; + } scns[3]; /* text, data, bss */ +}; + +/* Describe some of the parameters of the encapsulation, + including how to find the encapsulated BSD header. */ + +#if TARGET == TARGET_I386 +#define COFF_MAGIC 0514 /* I386MAGIC */ +#endif +#if TARGET == TARGET_M68K +#define COFF_MAGIC 0520 /* MC68MAGIC */ +#endif +#if TARGET == TARGET_SPARC +#define COFF_MAGIC UNKNOWN!!! /* Used by TTI */ +#endif +#if TARGET == TARGET_AM29K +#define COFF_MAGIC 0x17A /* Used by asm29k cross-tools */ +#endif + +#ifdef COFF_MAGIC +short __header_offset_temp; + +/* FIXME, this is dumb. The same tools can't handle a.outs for different + architectures, just because COFF_MAGIC is different; so you need a + separate GNU nm for every architecture!!? Also note that for + expediency, this macros accepts COFF_MAGIC in either byte order. + The right thing to do is to call read_aout_header to handle all this. */ + +#define HEADER_OFFSET(f) \ + (__header_offset_temp = 0, \ + fread ((char *)&__header_offset_temp, sizeof (short), 1, (f)), \ + fseek ((f), -sizeof (short), 1), \ + (__header_offset_temp==COFF_MAGIC || __header_offset_temp == \ + ((COFF_MAGIC >> 8)|((COFF_MAGIC&0xFF)<<8)) \ + ? sizeof(struct coffheader) : 0)) + +#define HEADER_OFFSET_FD(fd) \ + (__header_offset_temp = 0, \ + read (fd, (char *)&__header_offset_temp, sizeof (short)), \ + lseek ((fd), -sizeof (short), 1), \ + (__header_offset_temp==COFF_MAGIC || __header_offset_temp == \ + ((COFF_MAGIC >> 8)|((COFF_MAGIC&0xFF)<<8)) \ + ? sizeof(struct coffheader) : 0)) + + +#else +#define HEADER_OFFSET(f) 0 +#define HEADER_OFFSET_FD(fd) 0 +#endif + +#define HEADER_SEEK(f) (fseek ((f), HEADER_OFFSET((f)), 1)) +#define HEADER_SEEK_FD(fd) (lseek ((fd), HEADER_OFFSET_FD((fd)), 1)) + + +/* Describe the characteristics of the BSD header + that appears inside the encapsulation. */ + +#undef _N_HDROFF +#undef N_TXTADDR +#undef N_DATADDR + +/* Encapsulated coff files that are linked ZMAGIC have a text segment + offset just past the header (and a matching TXTADDR), excluding + the headers from the text segment proper but keeping the physical + layout and the virtual memory layout page-aligned. + + Non-encapsulated a.out files that are linked ZMAGIC have a text + segment that starts at 0 and an N_TXTADR similarly offset to 0. + They too are page-aligned with each other, but they include the + a.out header as part of the text. + + The _N_HDROFF gets sizeof struct exec added to it, so we have + to compensate here. See <a.out.gnu.h>. */ + +#define _N_HDROFF(x) ((N_FLAGS(x) & N_FLAGS_COFF_ENCAPSULATE) ? \ + sizeof (struct coffheader) : -sizeof (struct exec)) + +/* Address of text segment in memory after it is loaded. */ +#define N_TXTADDR(x) \ + (TEXT_START_ADDR + \ + ((N_FLAGS(x) & N_FLAGS_COFF_ENCAPSULATE) ? \ + sizeof (struct coffheader) + sizeof (struct exec) : 0)) + +/* I have no idea what this is doing here. -- gnu@toad.com 20Mar90 + Perhaps it is to give a size that is acceptable to any machine? */ +#undef SEGMENT_SIZE +#define SEGMENT_SIZE 0x400000 + +#define N_DATADDR(x) \ + ((N_FLAGS(x) & N_FLAGS_COFF_ENCAPSULATE) ? \ + (SEGMENT_SIZE + ((N_TXTADDR(x)+(x).a_text-1) & ~(SEGMENT_SIZE-1))) : \ + (N_TXTADDR(x)+(x).a_text)) + +#endif /* A_OUT_ENCAP_H_SEEN */ diff --git a/include/ranlib.h b/include/ranlib.h new file mode 100755 index 0000000..07bc0ab --- /dev/null +++ b/include/ranlib.h @@ -0,0 +1,55 @@ +/* ranlib.h -- archive library index member definition for GNU. + Copyright (C) 1990 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. + + 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +/* The Symdef member of an archive contains two things: + a table that maps symbol-string offsets to file offsets, + and a symbol-string table. All the symbol names are + run together (each with trailing null) in the symbol-string + table. There is a single longword bytecount on the front + of each of these tables. Thus if we have two symbols, + "foo" and "_bar", that are in archive members at offsets + 200 and 900, it would look like this: + 16 ; byte count of index table + 0 ; offset of "foo" in string table + 200 ; offset of foo-module in file + 4 ; offset of "bar" in string table + 900 ; offset of bar-module in file + 9 ; byte count of string table + "foo\0_bar\0" ; string table */ + +/* Format of __.SYMDEF: + First, a longword containing the size of the 'symdef' data that follows. + Second, zero or more 'symdef' structures. + Third, a longword containing the length of symbol name strings. + Fourth, zero or more symbol name strings (each followed by a null). */ + +struct symdef + { + union + { + unsigned long string_offset; /* In the file */ + char *name; /* In memory, sometimes */ + } s; + unsigned long file_offset; + }; + +/* Compatability with BSD code */ + +#define ranlib symdef +#define ran_un s +#define ran_str string_offset +#define ran_name name +#define ran_off file_offset diff --git a/include/stab.def b/include/stab.def new file mode 100755 index 0000000..58364e1 --- /dev/null +++ b/include/stab.def @@ -0,0 +1,182 @@ +/* Table of DBX symbol codes for the GNU system. + Copyright (C) 1988 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 1, 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +/* Global variable. Only the name is significant. + To find the address, look in the corresponding external symbol. */ +__define_stab (N_GSYM, 0x20, "GSYM") + +/* Function name for BSD Fortran. Only the name is significant. + To find the address, look in the corresponding external symbol. */ +__define_stab (N_FNAME, 0x22, "FNAME") + +/* Function name or text-segment variable for C. Value is its address. + Desc is supposedly starting line number, but GCC doesn't set it + and DBX seems not to miss it. */ +__define_stab (N_FUN, 0x24, "FUN") + +/* Data-segment variable with internal linkage. Value is its address. */ +__define_stab (N_STSYM, 0x26, "STSYM") + +/* BSS-segment variable with internal linkage. Value is its address. */ +__define_stab (N_LCSYM, 0x28, "LCSYM") + +/* Name of main routine. Only the name is significant. + This is not used in C. */ +__define_stab (N_MAIN, 0x2a, "MAIN") + +/* Register variable. Value is number of register. */ +__define_stab (N_RSYM, 0x40, "RSYM") + +/* Structure or union element. Value is offset in the structure. */ +__define_stab (N_SSYM, 0x60, "SSYM") + +/* Parameter variable. Value is offset from argument pointer. + (On most machines the argument pointer is the same as the frame pointer. */ +__define_stab (N_PSYM, 0xa0, "PSYM") + +/* Automatic variable in the stack. Value is offset from frame pointer. + Also used for type descriptions. */ +__define_stab (N_LSYM, 0x80, "LSYM") + +/* Alternate entry point. Value is its address. */ +__define_stab (N_ENTRY, 0xa4, "ENTRY") + +/* Name of main source file. + Value is starting text address of the compilation. */ +__define_stab (N_SO, 0x64, "SO") + +/* Name of sub-source file. + Value is starting text address of the compilation. */ +__define_stab (N_SOL, 0x84, "SOL") + +/* Line number in text segment. Desc is the line number; + value is corresponding address. */ +__define_stab (N_SLINE, 0x44, "SLINE") +/* Similar, for data segment. */ +__define_stab (N_DSLINE, 0x66, "DSLINE") +/* Similar, for bss segment. */ +__define_stab (N_BSLINE, 0x68, "BSLINE") + +/* Beginning of an include file. Only Sun uses this. + In an object file, only the name is significant. + The Sun linker puts data into some of the other fields. */ +__define_stab (N_BINCL, 0x82, "BINCL") +/* End of an include file. No name. + These two act as brackets around the file's output. + In an object file, there is no significant data in this entry. + The Sun linker puts data into some of the fields. */ +__define_stab (N_EINCL, 0xa2, "EINCL") +/* Place holder for deleted include file. + This appears only in output from the Sun linker. */ +__define_stab (N_EXCL, 0xc2, "EXCL") + +/* Beginning of lexical block. + The desc is the nesting level in lexical blocks. + The value is the address of the start of the text for the block. + The variables declared inside the block *precede* the N_LBRAC symbol. */ +__define_stab (N_LBRAC, 0xc0, "LBRAC") +/* End of a lexical block. Desc matches the N_LBRAC's desc. + The value is the address of the end of the text for the block. */ +__define_stab (N_RBRAC, 0xe0, "RBRAC") + +/* Begin named common block. Only the name is significant. */ +__define_stab (N_BCOMM, 0xe2, "BCOMM") +/* Begin named common block. Only the name is significant + (and it should match the N_BCOMM). */ +__define_stab (N_ECOMM, 0xe4, "ECOMM") +/* End common (local name): value is address. + I'm not sure how this is used. */ +__define_stab (N_ECOML, 0xe8, "ECOML") +/* Second symbol entry containing a length-value for the preceding entry. + The value is the length. */ +__define_stab (N_LENG, 0xfe, "LENG") + +/* Global symbol in Pascal. + Supposedly the value is its line number; I'm skeptical. */ +__define_stab (N_PC, 0x30, "PC") + +/* Modula-2 compilation unit. Can someone say what info it contains? */ +__define_stab (N_M2C, 0x42, "M2C") +/* Modula-2 scope information. Can someone say what info it contains? */ +__define_stab (N_SCOPE, 0xc4, "SCOPE") + +/* Sun's source-code browser stabs. ?? Don't know what the fields are. + Supposedly the field is "path to associated .cb file". */ +__define_stab (N_BROWS, 0x48, "BROWS") + +/* GNU C++ exception stabs. */ + +/* GNU C++ exception variable. Name is variable name. */ +__define_stab (N_EHDECL, 0x50, "EHDECL") + +/* GNU C++ `catch' clause. Value is its address. Desc is nonzero if + this entry is immediately followed by a CAUGHT stab saying what exception + was caught. Multiple CAUGHT stabs means that multiple exceptions + can be caught here. If Desc is 0, it means all exceptions are caught + here. */ +__define_stab (N_CATCH, 0x54, "CATCH") + +/* These STAB's are used on Gould systems for Non-Base register symbols + or something like that. FIXME. I have assigned the values at random + since I don't have a Gould here. Fixups from Gould folk welcome... */ +__define_stab (N_NBTEXT, 0xF0, "NBTEXT") +__define_stab (N_NBDATA, 0xF2, "NBDATA") +__define_stab (N_NBBSS, 0xF4, "NBBSS") +__define_stab (N_NBSTS, 0xF6, "NBSTS") +__define_stab (N_NBLCS, 0xF8, "NBLCS") +__define_stab (N_NSYMS, 0xFA, "NSYMS") + +/* The above information, in matrix format. + + STAB MATRIX + _________________________________________________ + | 00 - 1F are not dbx stab symbols | + | Entries with bits 01 set are external symbols | + | N_UNDEF | N_ABS | N_TEXT | N_DATA | + | N_BSS | N_COMM | | N_FN | + |_______________________________________________| + | 20 GSYM | 22 FNAME | 24 FUN | 26 STSYM | + | 28 LCSYM | 2A MAIN | 2C | 2E | + | 30 PC | 32 | 34 | 36 | + | 38 | 3A | 3C | 3E | + | 40 RSYM | 42 M2C | 44 SLINE | 46 | + | 48 BROWS | 4A | 4C | 4E | + | 50 EHDECL | 52 | 54 CATCH | 56 | + | 58 | 5A | 5C | 5E | + | 60 SSYM | 62 | 64 SO | 66 DSLINE | + | 68 BSLINE | 6A | 6C | 6E | + | 70 | 72 | 74 | 76 | + | 78 | 7A | 7C | 7E | + | 80 LSYM | 82 BINCL | 84 SOL | 86 | + | 88 | 8A | 8C | 8E | + | 90 | 92 | 94 | 96 | + | 98 | 9A | 9C | 9E | + | A0 PSYM | A2 EINCL | A4 ENTRY | A6 | + | A8 | AA | AC | AE | + | B0 | B2 | B4 | B6 | + | B8 | BA | BC | BE | + | C0 LBRAC | C2 EXCL | C4 SCOPE | C6 | + | C8 | CA | CC | CE | + | D0 | D2 | D4 | D6 | + | D8 | DA | DC | DE | + | E0 RBRAC | E2 BCOMM | E4 ECOMM | E6 | + | E8 ECOML | EA | EC | EE | + | F0 | F2 | F4 | F6 | + | F8 | FA | FC | FE LENG | + +-----------------------------------------------+ + +*/ diff --git a/include/stab.gnu.h b/include/stab.gnu.h new file mode 100755 index 0000000..77f2d41 --- /dev/null +++ b/include/stab.gnu.h @@ -0,0 +1,16 @@ +#ifndef __GNU_STAB__ + +/* Indicate the GNU stab.h is in use. */ + +#define __GNU_STAB__ + +#define __define_stab(NAME, CODE, STRING) NAME=CODE, + +enum __stab_debug_code +{ +#include "stab.def" +}; + +#undef __define_stab + +#endif /* __GNU_STAB_ */ |