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Diffstat (limited to 'bfd/netbsd532.c')
| -rw-r--r-- | bfd/netbsd532.c | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/bfd/netbsd532.c b/bfd/netbsd532.c new file mode 100644 index 0000000..32e94a9 --- /dev/null +++ b/bfd/netbsd532.c @@ -0,0 +1,189 @@ +/* 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" |