/* BFD back-end for NetBSD/532 a.out-ish binaries. Copyright (C) 1990, 1991, 1992 Free Software Foundation, Inc. This file is part of BFD, the Binary File Descriptor library. 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 2 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* * Created by Ian Dall * 5-Jun-94 * * Largely a copy of netbsd386.c plus some code from aout-pc532-mach.c */ #define BYTES_IN_WORD 4 #define ARCH 32 /* ZMAGIC files never include the header in the text. */ #define N_HEADER_IN_TEXT(x) 1 #define PAGE_SIZE 0x1000 /* ZMAGIC files start at address 0. This does not apply to QMAGIC. */ #define TEXT_START_ADDR PAGE_SIZE #define N_SHARED_LIB(x) 0 /* Use a_entry of 0 to distinguish object files from OMAGIC executables */ #define N_TXTADDR(x) \ ((N_MAGIC(x) == OMAGIC) && \ ((x).a_entry < TEXT_START_ADDR) ? 0 : /* object file or NMAGIC */\ N_SHARED_LIB(x) ? 0 : \ N_HEADER_IN_TEXT(x) ? \ TEXT_START_ADDR + EXEC_BYTES_SIZE : /* no padding */\ TEXT_START_ADDR /* a page of padding */\ ) #define SEGMENT_SIZE PAGE_SIZE #define DEFAULT_ARCH bfd_arch_ns32k #define MY(OP) CAT(netbsd532_,OP) /* This needs to start with a.out so GDB knows it is an a.out variant. */ #define TARGETNAME "a.out-netbsd-532" #define MACHTYPE_OK(mtype) ((mtype) == M_532_NETBSD) #define N_MAGIC(ex) \ ( (((ex).a_info)&0xffff0000) ? ((((ex).a_info))&0xffff) : ((ex).a_info)) #define N_MACHTYPE(ex) \ ( (((ex).a_info)&0xffff0000) ? (((((ex).a_info))>>16)&0x03ff) : 0 ) #define N_FLAGS(ex) \ ( (((ex).a_info)&0xffff0000) ? ((((ex).a_info)>>26)&0x3f) : 0 ) #define N_SET_INFO(ex, mag,mid,flag) \ ( (ex).a_info = htonl( (((flag)&0x3f)<<26) | (((mid)&0x03ff)<<16) | \ (((mag)&0xffff)) ) ) #define N_SET_MAGIC(exec,magic) \ ((exec).a_info = (((exec).a_info & ~0xffff) | ((magic) & 0xffff))) #define N_SET_MACHTYPE(exec,machtype) \ ((exec).a_info = \ (((exec).a_info & ~(0x3ff<<16)) | (((machtype)&0xff) << 16))) #define N_SET_FLAGS(exec, flags) \ ((exec).a_info = \ (((exec).a_info & ~(0x3f<<26)) | (((flags)&0x3f) << 26))) #define N_MAG(MAG) ((MAG) == o_magic? OMAGIC: ((MAG) == z_magic? ZMAGIC: ((MAG) == n_magic? NMAGIC: 0))) #define WRITE_HEADERS(abfd, execp) \ { \ bfd_size_type text_size; /* dummy vars */ \ int mag; \ file_ptr text_end; \ if (adata(abfd).magic == undecided_magic) \ NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end); \ mag = adata(abfd).magic; \ N_SET_INFO(*execp, N_MAG(mag), M_532_NETBSD, aout_backend_info (abfd)->exec_hdr_flags); \ \ execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE; \ execp->a_entry = bfd_get_start_address (abfd); \ \ execp->a_trsize = ((obj_textsec (abfd)->reloc_count) * \ obj_reloc_entry_size (abfd)); \ execp->a_drsize = ((obj_datasec (abfd)->reloc_count) * \ obj_reloc_entry_size (abfd)); \ NAME(aout,swap_exec_header_out) (abfd, execp, &exec_bytes); \ \ if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) return false; \ if (bfd_write ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd) \ != EXEC_BYTES_SIZE) \ return false; \ /* Now write out reloc info, followed by syms and strings */ \ \ if (bfd_get_outsymbols (abfd) != (asymbol **) NULL \ && bfd_get_symcount (abfd) != 0) \ { \ if (bfd_seek (abfd, (file_ptr)(N_SYMOFF(*execp)), SEEK_SET) \ != 0) \ return false; \ \ if (! NAME(aout,write_syms)(abfd)) return false; \ \ if (bfd_seek (abfd, (file_ptr)(N_TRELOFF(*execp)), SEEK_SET) \ != 0) \ return false; \ \ if (!NAME(aout,squirt_out_relocs) (abfd, obj_textsec (abfd))) \ return false; \ if (bfd_seek (abfd, (file_ptr)(N_DRELOFF(*execp)), SEEK_SET) \ != 0) \ return false; \ \ if (!NAME(aout,squirt_out_relocs)(abfd, obj_datasec (abfd))) \ return false; \ } \ } #include "bfd.h" #include "sysdep.h" #include "aout-ns32k.h" #include "libbfd.h" #include "libaout.h" /* On NetBSD, the magic number is always in ntohl's "network" (big-endian) format. */ #define SWAP_MAGIC(ext) bfd_getb32 (ext) #include "aout/aout64.h" /* Forward declaration. Defined in aout-target.h */ static boolean MY(set_sizes)(); static CONST struct aout_backend_data MY(backend_data) = { 0, /* zmagic contiguous */ 1, /* text incl header */ 0, 0, /* text vma? */ MY(set_sizes), 0, /* exec header is counted */ }; #define MY_backend_data &MY(backend_data) /* We can`t use the MYNS macro here for cpp reasons too subtle * for me -- IWD */ #define MY_bfd_reloc_type_lookup ns32kaout_bfd_reloc_type_lookup /* libaout doesn't use NAME for these ... */ #define MY_get_section_contents aout_32_get_section_contents static boolean MY(write_object_contents) (abfd) bfd *abfd; { struct external_exec exec_bytes; struct internal_exec *execp = exec_hdr (abfd); #if CHOOSE_RELOC_SIZE CHOOSE_RELOC_SIZE(abfd); #else obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; #endif BFD_ASSERT(bfd_get_arch(abfd) == bfd_arch_ns32k); BFD_ASSERT(bfd_get_mach(abfd) == 32532); N_SET_MACHTYPE (*execp, M_532_NETBSD); N_SET_FLAGS (*execp, aout_backend_info (abfd)->exec_hdr_flags); WRITE_HEADERS(abfd, execp); return true; } #define MY_write_object_contents MY(write_object_contents) #include "aout-target.h"