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- /* A.out "format 1" file handling code for BFD.
- Copyright 1990, 1991, 1992 Free Software Foundation, Inc.
- Written by Cygnus Support.
-
- 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. */
-
- #include "bfd.h"
- #include "sysdep.h"
- #include "libbfd.h"
-
- #include "aout/sun4.h"
- #include "libaout.h" /* BFD a.out internal data structures */
-
- #include "aout/aout64.h"
- #include "aout/stab_gnu.h"
- #include "aout/ar.h"
-
- /*
- The file @code{aoutf1.h} contains the code for BFD's
- a.out back end. Control over the generated back end is given by these
- two preprocessor names:
- @table @code
- @item ARCH_SIZE
- This value should be either 32 or 64, depending upon the size of an
- int in the target format. It changes the sizes of the structs which
- perform the memory/disk mapping of structures.
-
- The 64 bit backend may only be used if the host compiler supports 64
- ints (eg long long with gcc), by defining the name @code{HOST_64_BIT} in @code{bfd.h}.
- With this name defined, @emph{all} bfd operations are performed with 64bit
- arithmetic, not just those to a 64bit target.
-
- @item TARGETNAME
- The name put into the target vector.
- @item
- @end table
-
- */
-
- void (*bfd_error_trap)();
-
- /*SUPPRESS558*/
- /*SUPPRESS529*/
-
- void
- DEFUN(NAME(sunos,set_arch_mach), (abfd, machtype),
- bfd *abfd AND int machtype)
- {
- /* Determine the architecture and machine type of the object file. */
- enum bfd_architecture arch;
- long machine;
- switch (machtype) {
-
- case M_UNKNOWN:
- /* Some Sun3s make magic numbers without cpu types in them, so
- we'll default to the 68020. */
- arch = bfd_arch_m68k;
- machine = 68020;
- break;
-
- case M_68010:
- case M_HP200:
- arch = bfd_arch_m68k;
- machine = 68010;
- break;
-
- case M_68020:
- case M_HP300:
- arch = bfd_arch_m68k;
- machine = 68020;
- break;
-
- case M_SPARC:
- arch = bfd_arch_sparc;
- machine = 0;
- break;
-
- case M_386:
- arch = bfd_arch_i386;
- machine = 0;
- break;
-
- case M_29K:
- arch = bfd_arch_a29k;
- machine = 0;
- break;
-
- case M_HPUX:
- arch = bfd_arch_m68k;
- machine = 0;
- break;
-
- default:
- arch = bfd_arch_obscure;
- machine = 0;
- break;
- }
- bfd_set_arch_mach(abfd, arch, machine);
- }
-
- #define SET_ARCH_MACH(ABFD, EXEC) \
- NAME(sunos,set_arch_mach)(ABFD, N_MACHTYPE (EXEC)); \
- choose_reloc_size(ABFD);
-
- /* Determine the size of a relocation entry, based on the architecture */
- static void
- DEFUN(choose_reloc_size,(abfd),
- bfd *abfd)
- {
- switch (bfd_get_arch(abfd)) {
- case bfd_arch_sparc:
- case bfd_arch_a29k:
- obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
- break;
- default:
- obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
- break;
- }
- }
-
- /* Write an object file in SunOS format.
- Section contents have already been written. We write the
- file header, symbols, and relocation. */
-
- static boolean
- DEFUN(NAME(aout,sunos4_write_object_contents),
- (abfd),
- bfd *abfd)
- {
- struct external_exec exec_bytes;
- struct internal_exec *execp = exec_hdr (abfd);
-
- /* Magic number, maestro, please! */
- switch (bfd_get_arch(abfd)) {
- case bfd_arch_m68k:
- switch (bfd_get_mach(abfd)) {
- case 68010:
- N_SET_MACHTYPE(*execp, M_68010);
- break;
- default:
- case 68020:
- N_SET_MACHTYPE(*execp, M_68020);
- break;
- }
- break;
- case bfd_arch_sparc:
- N_SET_MACHTYPE(*execp, M_SPARC);
- break;
- case bfd_arch_i386:
- N_SET_MACHTYPE(*execp, M_386);
- break;
- case bfd_arch_a29k:
- N_SET_MACHTYPE(*execp, M_29K);
- break;
- default:
- N_SET_MACHTYPE(*execp, M_UNKNOWN);
- }
-
- choose_reloc_size(abfd);
-
- /* Some tools want this to be 0, some tools want this to be one.
- Today, it seems that 0 is the most important setting (PR1927) */
- N_SET_FLAGS (*execp, 0x0);
-
- WRITE_HEADERS(abfd, execp);
-
- return true;
- }
-
- /* core files */
-
- #define CORE_MAGIC 0x080456
- #define CORE_NAMELEN 16
-
- /* The core structure is taken from the Sun documentation.
- Unfortunately, they don't document the FPA structure, or at least I
- can't find it easily. Fortunately the core header contains its own
- length. So this shouldn't cause problems, except for c_ucode, which
- so far we don't use but is easy to find with a little arithmetic. */
-
- /* But the reg structure can be gotten from the SPARC processor handbook.
- This really should be in a GNU include file though so that gdb can use
- the same info. */
- struct regs {
- int r_psr;
- int r_pc;
- int r_npc;
- int r_y;
- int r_g1;
- int r_g2;
- int r_g3;
- int r_g4;
- int r_g5;
- int r_g6;
- int r_g7;
- int r_o0;
- int r_o1;
- int r_o2;
- int r_o3;
- int r_o4;
- int r_o5;
- int r_o6;
- int r_o7;
- };
-
- /* Taken from Sun documentation: */
-
- /* FIXME: It's worse than we expect. This struct contains TWO substructs
- neither of whose size we know, WITH STUFF IN BETWEEN THEM! We can't
- even portably access the stuff in between! */
-
- struct external_sparc_core {
- int c_magic; /* Corefile magic number */
- int c_len; /* Sizeof (struct core) */
- #define SPARC_CORE_LEN 432
- int c_regs[19]; /* General purpose registers -- MACHDEP SIZE */
- struct external_exec c_aouthdr; /* A.out header */
- int c_signo; /* Killing signal, if any */
- int c_tsize; /* Text size (bytes) */
- int c_dsize; /* Data size (bytes) */
- int c_ssize; /* Stack size (bytes) */
- char c_cmdname[CORE_NAMELEN + 1]; /* Command name */
- double fp_stuff[1]; /* external FPU state (size unknown by us) */
- /* The type "double" is critical here, for alignment.
- SunOS declares a struct here, but the struct's alignment
- is double since it contains doubles. */
- int c_ucode; /* Exception no. from u_code */
- /* (this member is not accessible by name since we don't
- portably know the size of fp_stuff.) */
- };
-
- struct external_sun3_core {
- int c_magic; /* Corefile magic number */
- int c_len; /* Sizeof (struct core) */
- #define SUN3_CORE_LEN 826 /* As of SunOS 4.1.1 */
- int c_regs[18]; /* General purpose registers -- MACHDEP SIZE */
- struct external_exec c_aouthdr; /* A.out header */
- int c_signo; /* Killing signal, if any */
- int c_tsize; /* Text size (bytes) */
- int c_dsize; /* Data size (bytes) */
- int c_ssize; /* Stack size (bytes) */
- char c_cmdname[CORE_NAMELEN + 1]; /* Command name */
- double fp_stuff[1]; /* external FPU state (size unknown by us) */
- /* The type "double" is critical here, for alignment.
- SunOS declares a struct here, but the struct's alignment
- is double since it contains doubles. */
- int c_ucode; /* Exception no. from u_code */
- /* (this member is not accessible by name since we don't
- portably know the size of fp_stuff.) */
- };
-
- struct internal_sunos_core {
- int c_magic; /* Corefile magic number */
- int c_len; /* Sizeof (struct core) */
- long c_regs_pos; /* file offset of General purpose registers */
- int c_regs_size; /* size of General purpose registers */
- struct internal_exec c_aouthdr; /* A.out header */
- int c_signo; /* Killing signal, if any */
- int c_tsize; /* Text size (bytes) */
- int c_dsize; /* Data size (bytes) */
- int c_ssize; /* Stack size (bytes) */
- bfd_vma c_stacktop; /* Stack top (address) */
- char c_cmdname[CORE_NAMELEN + 1]; /* Command name */
- long fp_stuff_pos; /* file offset of external FPU state (regs) */
- int fp_stuff_size; /* Size of it */
- int c_ucode; /* Exception no. from u_code */
- };
-
- /* byte-swap in the Sun-3 core structure */
- static void
- DEFUN(swapcore_sun3,(abfd, ext, intcore),
- bfd *abfd AND
- char *ext AND
- struct internal_sunos_core *intcore)
- {
- struct external_sun3_core *extcore = (struct external_sun3_core *)ext;
-
- intcore->c_magic = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_magic);
- intcore->c_len = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_len );
- intcore->c_regs_pos = (long) (((struct external_sun3_core *)0)->c_regs);
- intcore->c_regs_size = sizeof (extcore->c_regs);
- NAME(aout,swap_exec_header_in)(abfd, &extcore->c_aouthdr,&intcore->c_aouthdr);
- intcore->c_signo = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_signo);
- intcore->c_tsize = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_tsize);
- intcore->c_dsize = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_dsize);
- intcore->c_ssize = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_ssize);
- memcpy (intcore->c_cmdname, extcore->c_cmdname, sizeof (intcore->c_cmdname));
- intcore->fp_stuff_pos = (long) (((struct external_sun3_core *)0)->fp_stuff);
- /* FP stuff takes up whole rest of struct, except c_ucode. */
- intcore->fp_stuff_size = intcore->c_len - (sizeof extcore->c_ucode) -
- (file_ptr)(((struct external_sun3_core *)0)->fp_stuff);
- /* Ucode is the last thing in the struct -- just before the end */
- intcore->c_ucode =
- bfd_h_get_32 (abfd,
- intcore->c_len - sizeof (extcore->c_ucode) + (unsigned char *)extcore);
- intcore->c_stacktop = 0x0E000000; /* By experimentation */
- }
-
-
- /* byte-swap in the Sparc core structure */
- static void
- DEFUN(swapcore_sparc,(abfd, ext, intcore),
- bfd *abfd AND
- char *ext AND
- struct internal_sunos_core *intcore)
- {
- struct external_sparc_core *extcore = (struct external_sparc_core *)ext;
-
- intcore->c_magic = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_magic);
- intcore->c_len = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_len );
- intcore->c_regs_pos = (long) (((struct external_sparc_core *)0)->c_regs);
- intcore->c_regs_size = sizeof (extcore->c_regs);
- NAME(aout,swap_exec_header_in)(abfd, &extcore->c_aouthdr,&intcore->c_aouthdr);
- intcore->c_signo = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_signo);
- intcore->c_tsize = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_tsize);
- intcore->c_dsize = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_dsize);
- intcore->c_ssize = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_ssize);
- memcpy (intcore->c_cmdname, extcore->c_cmdname, sizeof (intcore->c_cmdname));
- intcore->fp_stuff_pos = (long) (((struct external_sparc_core *)0)->fp_stuff);
- /* FP stuff takes up whole rest of struct, except c_ucode. */
- intcore->fp_stuff_size = intcore->c_len - (sizeof extcore->c_ucode) -
- (file_ptr)(((struct external_sparc_core *)0)->fp_stuff);
- /* Ucode is the last thing in the struct -- just before the end */
- intcore->c_ucode =
- bfd_h_get_32 (abfd,
- intcore->c_len - sizeof (extcore->c_ucode) + (unsigned char *)extcore);
-
- /* Supposedly the user stack grows downward from the bottom of kernel memory.
- Presuming that this remains true, this definition will work. */
- /* Now sun has provided us with another challenge. The value is different
- for sparc2 and sparc10 (both running SunOS 4.1.3). We pick one or
- the other based on the current value of the stack pointer. This
- loses (a) if the stack pointer has been clobbered, or (b) if the stack
- is larger than 128 megabytes.
-
- It's times like these you're glad they're switching to ELF.
-
- Note that using include files or nlist on /vmunix would be wrong,
- because we want the value for this core file, no matter what kind of
- machine we were compiled on or are running on. */
- #define SPARC_USRSTACK_SPARC2 ((bfd_vma)0xf8000000)
- #define SPARC_USRSTACK_SPARC10 ((bfd_vma)0xf0000000)
- {
- bfd_vma sp = bfd_h_get_32
- (abfd, (unsigned char *)&((struct regs *)&extcore->c_regs[0])->r_o6);
- if (sp < SPARC_USRSTACK_SPARC10)
- intcore->c_stacktop = SPARC_USRSTACK_SPARC10;
- else
- intcore->c_stacktop = SPARC_USRSTACK_SPARC2;
- }
- }
-
- /* need this cast because ptr is really void * */
- #define core_hdr(bfd) ((bfd)->tdata.sun_core_data)
- #define core_datasec(bfd) (core_hdr(bfd)->data_section)
- #define core_stacksec(bfd) (core_hdr(bfd)->stack_section)
- #define core_regsec(bfd) (core_hdr(bfd)->reg_section)
- #define core_reg2sec(bfd) (core_hdr(bfd)->reg2_section)
-
- /* These are stored in the bfd's tdata */
- struct sun_core_struct {
- struct internal_sunos_core *hdr; /* core file header */
- asection *data_section;
- asection *stack_section;
- asection *reg_section;
- asection *reg2_section;
- };
-
- static bfd_target *
- DEFUN(sunos4_core_file_p,(abfd),
- bfd *abfd)
- {
- unsigned char longbuf[4]; /* Raw bytes of various header fields */
- int core_size;
- int core_mag;
- struct internal_sunos_core *core;
- char *extcore;
- struct mergem {
- struct sun_core_struct suncoredata;
- struct internal_sunos_core internal_sunos_core;
- char external_core[1];
- } *mergem;
-
- if (bfd_read ((PTR)longbuf, 1, sizeof (longbuf), abfd) !=
- sizeof (longbuf))
- return 0;
- core_mag = bfd_h_get_32 (abfd, longbuf);
-
- if (core_mag != CORE_MAGIC) return 0;
-
- /* SunOS core headers can vary in length; second word is size; */
- if (bfd_read ((PTR)longbuf, 1, sizeof (longbuf), abfd) !=
- sizeof (longbuf))
- return 0;
- core_size = bfd_h_get_32 (abfd, longbuf);
- /* Sanity check */
- if (core_size > 20000)
- return 0;
-
- if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) < 0) return 0;
-
- mergem = (struct mergem *)bfd_zalloc (abfd, core_size + sizeof (struct mergem));
- if (mergem == NULL) {
- bfd_error = no_memory;
- return 0;
- }
-
- extcore = mergem->external_core;
-
- if ((bfd_read ((PTR) extcore, 1, core_size, abfd)) != core_size) {
- bfd_error = system_call_error;
- bfd_release (abfd, (char *)mergem);
- return 0;
- }
-
- /* Validate that it's a core file we know how to handle, due to sun
- botching the positioning of registers and other fields in a machine
- dependent way. */
- core = &mergem->internal_sunos_core;
- switch (core_size) {
- case SPARC_CORE_LEN:
- swapcore_sparc (abfd, extcore, core);
- break;
- case SUN3_CORE_LEN:
- swapcore_sun3 (abfd, extcore, core);
- break;
- default:
- bfd_error = system_call_error; /* FIXME */
- bfd_release (abfd, (char *)mergem);
- return 0;
- }
-
- abfd->tdata.sun_core_data = &mergem->suncoredata;
- abfd->tdata.sun_core_data->hdr = core;
-
- /* create the sections. This is raunchy, but bfd_close wants to reclaim
- them */
- core_stacksec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
- if (core_stacksec (abfd) == NULL) {
- loser:
- bfd_error = no_memory;
- bfd_release (abfd, (char *)mergem);
- return 0;
- }
- core_datasec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
- if (core_datasec (abfd) == NULL) {
- loser1:
- bfd_release (abfd, core_stacksec (abfd));
- goto loser;
- }
- core_regsec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
- if (core_regsec (abfd) == NULL) {
- loser2:
- bfd_release (abfd, core_datasec (abfd));
- goto loser1;
- }
- core_reg2sec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
- if (core_reg2sec (abfd) == NULL) {
- bfd_release (abfd, core_regsec (abfd));
- goto loser2;
- }
-
- core_stacksec (abfd)->name = ".stack";
- core_datasec (abfd)->name = ".data";
- core_regsec (abfd)->name = ".reg";
- core_reg2sec (abfd)->name = ".reg2";
-
- core_stacksec (abfd)->flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
- core_datasec (abfd)->flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
- core_regsec (abfd)->flags = SEC_ALLOC + SEC_HAS_CONTENTS;
- core_reg2sec (abfd)->flags = SEC_ALLOC + SEC_HAS_CONTENTS;
-
- core_stacksec (abfd)->_raw_size = core->c_ssize;
- core_datasec (abfd)->_raw_size = core->c_dsize;
- core_regsec (abfd)->_raw_size = core->c_regs_size;
- core_reg2sec (abfd)->_raw_size = core->fp_stuff_size;
-
- core_stacksec (abfd)->vma = (core->c_stacktop - core->c_ssize);
- core_datasec (abfd)->vma = N_DATADDR(core->c_aouthdr);
- core_regsec (abfd)->vma = 0;
- core_reg2sec (abfd)->vma = 0;
-
- core_stacksec (abfd)->filepos = core->c_len + core->c_dsize;
- core_datasec (abfd)->filepos = core->c_len;
- /* We'll access the regs afresh in the core file, like any section: */
- core_regsec (abfd)->filepos = (file_ptr)core->c_regs_pos;
- core_reg2sec (abfd)->filepos = (file_ptr)core->fp_stuff_pos;
-
- /* Align to word at least */
- core_stacksec (abfd)->alignment_power = 2;
- core_datasec (abfd)->alignment_power = 2;
- core_regsec (abfd)->alignment_power = 2;
- core_reg2sec (abfd)->alignment_power = 2;
-
- abfd->sections = core_stacksec (abfd);
- core_stacksec (abfd)->next = core_datasec (abfd);
- core_datasec (abfd)->next = core_regsec (abfd);
- core_regsec (abfd)->next = core_reg2sec (abfd);
-
- abfd->section_count = 4;
-
- return abfd->xvec;
- }
-
- static char *sunos4_core_file_failing_command (abfd)
- bfd *abfd;
- {
- return core_hdr (abfd)->hdr->c_cmdname;
- }
-
- static int
- DEFUN(sunos4_core_file_failing_signal,(abfd),
- bfd *abfd)
- {
- return core_hdr (abfd)->hdr->c_signo;
- }
-
- static boolean
- DEFUN(sunos4_core_file_matches_executable_p, (core_bfd, exec_bfd),
- bfd *core_bfd AND
- bfd *exec_bfd)
- {
- if (core_bfd->xvec != exec_bfd->xvec) {
- bfd_error = system_call_error;
- return false;
- }
-
- return (memcmp ((char *)&((core_hdr (core_bfd)->hdr)->c_aouthdr),
- (char *) exec_hdr (exec_bfd),
- sizeof (struct internal_exec)) == 0) ? true : false;
- }
-
- #define MY_set_sizes sunos4_set_sizes
- static boolean
- DEFUN (sunos4_set_sizes, (abfd),
- bfd *abfd)
- {
- switch (bfd_get_arch (abfd))
- {
- default:
- return false;
- case bfd_arch_sparc:
- adata(abfd).page_size = 0x2000;
- adata(abfd).segment_size = 0x2000;
- adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
- return true;
- case bfd_arch_m68k:
- adata(abfd).page_size = 0x2000;
- adata(abfd).segment_size = 0x20000;
- adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
- return true;
- }
- }
-
- static CONST struct aout_backend_data sunos4_aout_backend = {
- 0, 1, 0, sunos4_set_sizes, 0,
- };
-
- #define MY_core_file_failing_command sunos4_core_file_failing_command
- #define MY_core_file_failing_signal sunos4_core_file_failing_signal
- #define MY_core_file_matches_executable_p sunos4_core_file_matches_executable_p
-
- #define MY_bfd_debug_info_start bfd_void
- #define MY_bfd_debug_info_end bfd_void
- #define MY_bfd_debug_info_accumulate \
- (void (*) PARAMS ((bfd *, struct sec *))) bfd_void
- #define MY_core_file_p sunos4_core_file_p
- #define MY_write_object_contents NAME(aout,sunos4_write_object_contents)
- #define MY_backend_data &sunos4_aout_backend
-
- #define TARGET_IS_BIG_ENDIAN_P
-
- #include "aout-target.h"
-