* trad-core.c: Pass the u.u_ar0 value as the negative of the
virtual-memory-address of the .reg section. We can't just make a section for "all the regs and nothing else" because only GDB knows exactly where the regs are (scattered around the upage and stack). Clean up memory allocation. Remove big- and little-endian vectors, replace with single vector; this only runs on the host, in host byte order. Replace byteswap routines with aborts in case anyone calls them. * targets.c: There's only one trad_core_vec now. * aoutf1.h (sunos_core_file_p): VMA of .reg* now needs to be 0.
This commit is contained in:
John Gilmore
parent
492e557236
commit
637942e4db
101
bfd/trad-core.c
101
bfd/trad-core.c
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@ -21,17 +21,17 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* To use this file on a particular host, configure the host with these
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parameters in the config/h-HOST file:
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HDEFINES=-DHOST_SYS=WHATEVER_SYS -DTRAD_CORE
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HDEFINES=-DTRAD_CORE
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HDEPFILES=trad-core.o
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*/
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#include <sysdep.h>
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#include "bfd.h"
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#include <stdio.h>
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#include "sysdep.h"
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#include "libbfd.h"
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#include "libaout.h" /* BFD a.out internal data structures */
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/dir.h>
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@ -57,20 +57,22 @@ struct core_data {
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#define core_stacksec(bfd) (((struct core_data*)((bfd)->tdata))->stack_section)
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#define core_regsec(bfd) (((struct core_data *) ((bfd)->tdata))->reg_section)
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/* Handle 4.2-style (and perhaps also sysV-style) core dump file. */
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/* ARGSUSED */
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bfd_target *
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trad_unix_core_file_p (abfd)
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bfd *abfd;
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{
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#if HOST_SYS == SUN4_SYS
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return 0;
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#else
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int val;
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char *rawptr;
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struct user u;
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unsigned int reg_offset, fp_reg_offset;
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/* 4.2-style (and perhaps also sysV-style) core dump file. */
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/* This struct is just for allocating two things with one zalloc, so
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they will be freed together, without violating alignment constraints. */
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struct core_user {
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struct core_data coredata;
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struct user u;
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} *rawptr;
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val = bfd_read ((void *)&u, 1, sizeof u, abfd);
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if (val != sizeof u)
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@ -87,18 +89,18 @@ trad_unix_core_file_p (abfd)
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/* Allocate both the upage and the struct core_data at once, so
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a single free() will free them both. */
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rawptr = (char *)zalloc (sizeof (u) + sizeof (struct core_data));
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rawptr = (struct core_user *)bfd_zalloc (abfd, sizeof (struct core_user));
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if (rawptr == NULL) {
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bfd_error = no_memory;
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return 0;
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}
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set_tdata (abfd, (struct core_data *)rawptr);
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core_upage (abfd) = (struct user *)(rawptr + sizeof (struct core_data));
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set_tdata (abfd, &rawptr->coredata);
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core_upage (abfd) = &rawptr->u;
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*core_upage (abfd) = u; /* Save that upage! */
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/* create the sections. This is raunchy, but bfd_close wants to reclaim
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them */
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/* Create the sections. This is raunchy, but bfd_close wants to free
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them separately. */
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core_stacksec (abfd) = (asection *) zalloc (sizeof (asection));
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if (core_stacksec (abfd) == NULL) {
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loser:
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@ -139,7 +141,21 @@ loser2:
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core_datasec (abfd)->vma = HOST_TEXT_START_ADDR + (NBPG * u.u_tsize);
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#endif
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core_stacksec (abfd)->vma = HOST_STACK_END_ADDR - (NBPG * u.u_ssize);
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core_regsec (abfd)->vma = -1;
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/* This is tricky. As the "register section", we give them the entire
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upage and stack. u.u_ar0 points to where "register 0" is stored.
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There are two tricks with this, though. One is that the rest of the
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registers might be at positive or negative (or both) displacements
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from *u_ar0. The other is that u_ar0 is sometimes an absolute address
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in kernel memory, and on other systems it is an offset from the beginning
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of the `struct user'.
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As a practical matter, we don't know where the registers actually are,
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so we have to pass the whole area to GDB. We encode the value of u_ar0
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by setting the .regs section up so that its virtual memory address
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0 is at the place pointed to by u_ar0 (by setting the vma of the start
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of the section to -u_ar0). GDB uses this info to locate the regs,
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using minor trickery to get around the offset-or-absolute-addr problem. */
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core_regsec (abfd)->vma = 0 - (int) u.u_ar0;
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core_datasec (abfd)->filepos = NBPG * UPAGES;
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core_stacksec (abfd)->filepos = (NBPG * UPAGES) + NBPG * u.u_dsize;
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@ -156,7 +172,6 @@ loser2:
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abfd->section_count = 3;
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return abfd->xvec;
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#endif
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}
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char *
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@ -231,10 +246,18 @@ trad_unix_core_file_matches_executable_p (core_bfd, exec_bfd)
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#define trad_unix_bfd_debug_info_accumulate (PROTO (void, (*), \
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(bfd *, struct sec *))) bfd_void
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/* If somebody calls any byte-swapping routines, shoot them. */
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void
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swap_abort()
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{
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abort(); /* This way doesn't require any declaration for ANSI to fuck up */
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}
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#define NO_GET ((PROTO(bfd_vma, (*), ( bfd_byte *))) swap_abort )
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#define NO_PUT ((PROTO(void, (*), (bfd_vma, bfd_byte *))) swap_abort )
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bfd_target trad_core_big_vec =
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bfd_target trad_core_vec =
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{
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"trad-core-big",
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"trad-core",
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bfd_target_unknown_flavour,
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true, /* target byte order */
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true, /* target headers byte order */
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@ -245,41 +268,15 @@ bfd_target trad_core_big_vec =
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' ', /* ar_pad_char */
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16, /* ar_max_namelen */
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3, /* minimum alignment power */
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_do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* data */
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_do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* hdrs */
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NO_GET, NO_PUT, NO_GET, NO_PUT, NO_GET, NO_PUT, /* data */
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NO_GET, NO_PUT, NO_GET, NO_PUT, NO_GET, NO_PUT, /* hdrs */
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{_bfd_dummy_target, _bfd_dummy_target,
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_bfd_dummy_target, trad_unix_core_file_p},
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{bfd_false, bfd_false, /* bfd_create_object */
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bfd_false, bfd_false},
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{bfd_false, bfd_false, /* bfd_write_contents */
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bfd_false, bfd_false},
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{_bfd_dummy_target, _bfd_dummy_target,
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_bfd_dummy_target, trad_unix_core_file_p},
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{bfd_false, bfd_false, /* bfd_create_object */
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bfd_false, bfd_false},
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{bfd_false, bfd_false, /* bfd_write_contents */
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bfd_false, bfd_false},
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JUMP_TABLE(trad_unix)
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};
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bfd_target trad_core_little_vec =
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{
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"trad-core-little",
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bfd_target_unknown_flavour,
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false, /* target byte order */
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false, /* target headers byte order */
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(HAS_RELOC | EXEC_P | /* object flags */
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HAS_LINENO | HAS_DEBUG |
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HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
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(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
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' ', /* ar_pad_char */
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16, /* ar_max_namelen */
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3, /* minimum alignment power */
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_do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putb16,
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_do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16,
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{_bfd_dummy_target, _bfd_dummy_target,
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_bfd_dummy_target, trad_unix_core_file_p},
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{bfd_false, bfd_false, /* bfd_create_object */
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bfd_false, bfd_false},
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{bfd_false, bfd_false, /* bfd_write_contents */
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bfd_false, bfd_false},
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JUMP_TABLE(trad_unix)
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};
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