/* Target-dependent code for HP-UX on PA-RISC.
- Copyright 2002, 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
This file is part of GDB.
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., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
#include "defs.h"
#include "arch-utils.h"
#define IS_32BIT_TARGET(_gdbarch) \
((gdbarch_tdep (_gdbarch))->bytes_per_address == 4)
+/* Bit in the `ss_flag' member of `struct save_state' that indicates
+ that the 64-bit register values are live. From
+ <machine/save_state.h>. */
+#define HPPA_HPUX_SS_WIDEREGS 0x40
+
+/* Offsets of various parts of `struct save_state'. From
+ <machine/save_state.h>. */
+#define HPPA_HPUX_SS_FLAGS_OFFSET 0
+#define HPPA_HPUX_SS_NARROW_OFFSET 4
+#define HPPA_HPUX_SS_FPBLOCK_OFFSET 256
+#define HPPA_HPUX_SS_WIDE_OFFSET 640
+
+/* The size of `struct save_state. */
+#define HPPA_HPUX_SAVE_STATE_SIZE 1152
+
+/* The size of `struct pa89_save_state', which corresponds to PA-RISC
+ 1.1, the lowest common denominator that we support. */
+#define HPPA_HPUX_PA89_SAVE_STATE_SIZE 512
+
+
/* Forward declarations. */
extern void _initialize_hppa_hpux_tdep (void);
extern initialize_file_ftype _initialize_hppa_hpux_tdep;
return 0;
}
-#ifndef GDB_TARGET_IS_HPPA_20W
- /* Check whether the executable is dynamically linked or archive bound */
- /* With an archive-bound executable we can use the raw addresses we find
- for the callback function, etc. without modification. For an executable
- with shared libraries, we have to do more work to find the plabel, which
- can be the target of a call through $$dyncall from the aCC runtime support
- library (libCsup) which is linked shared by default by aCC. */
- /* This test below was copied from somsolib.c/somread.c. It may not be a very
- reliable one to test that an executable is linked shared. pai/1997-07-18 */
- shlib_info = bfd_get_section_by_name (symfile_objfile->obfd, "$SHLIB_INFO$");
- if (shlib_info && (bfd_section_size (symfile_objfile->obfd, shlib_info) != 0))
+ if (!gdbarch_tdep (current_gdbarch)->is_elf)
{
- /* The minsym we have has the local code address, but that's not
- the plabel that can be used by an inter-load-module call. */
- /* Find solib handle for main image (which has end.o), and use
- that and the min sym as arguments to __d_shl_get() (which
- does the equivalent of shl_findsym()) to find the plabel. */
-
- args_for_find_stub args;
- static char message[] = "Error while finding exception callback hook:\n";
-
- args.solib_handle = gdbarch_tdep (current_gdbarch)->solib_get_solib_by_pc (eh_notify_callback_addr);
- args.msym = msym;
- args.return_val = 0;
-
- recurse++;
- catch_errors (cover_find_stub_with_shl_get, &args, message,
- RETURN_MASK_ALL);
- eh_notify_callback_addr = args.return_val;
- recurse--;
-
- deprecated_exception_catchpoints_are_fragile = 1;
-
- if (!eh_notify_callback_addr)
- {
- /* We can get here either if there is no plabel in the export list
- for the main image, or if something strange happened (?) */
- warning (_("\
+ /* Check whether the executable is dynamically linked or archive bound */
+ /* With an archive-bound executable we can use the raw addresses we find
+ for the callback function, etc. without modification. For an executable
+ with shared libraries, we have to do more work to find the plabel, which
+ can be the target of a call through $$dyncall from the aCC runtime
+ support library (libCsup) which is linked shared by default by aCC. */
+ /* This test below was copied from somsolib.c/somread.c. It may not be a very
+ reliable one to test that an executable is linked shared.
+ pai/1997-07-18 */
+ shlib_info = bfd_get_section_by_name (symfile_objfile->obfd, "$SHLIB_INFO$");
+ if (shlib_info && (bfd_section_size (symfile_objfile->obfd, shlib_info) != 0))
+ {
+ /* The minsym we have has the local code address, but that's not
+ the plabel that can be used by an inter-load-module call. */
+ /* Find solib handle for main image (which has end.o), and use
+ that and the min sym as arguments to __d_shl_get() (which
+ does the equivalent of shl_findsym()) to find the plabel. */
+
+ args_for_find_stub args;
+
+ args.solib_handle = gdbarch_tdep (current_gdbarch)->solib_get_solib_by_pc (eh_notify_callback_addr);
+ args.msym = msym;
+ args.return_val = 0;
+
+ recurse++;
+ catch_errors (cover_find_stub_with_shl_get, &args,
+ _("Error while finding exception callback hook:\n"),
+ RETURN_MASK_ALL);
+ eh_notify_callback_addr = args.return_val;
+ recurse--;
+
+ deprecated_exception_catchpoints_are_fragile = 1;
+
+ if (!eh_notify_callback_addr)
+ {
+ /* We can get here either if there is no plabel in the export list
+ for the main image, or if something strange happened (?) */
+ warning (_("\
Couldn't find a plabel (indirect function label) for the exception callback.\n\
GDB will not be able to intercept exception events."));
- return 0;
- }
+ return 0;
+ }
+ }
+ else
+ deprecated_exception_catchpoints_are_fragile = 0;
}
- else
- deprecated_exception_catchpoints_are_fragile = 0;
-#endif
/* Now, look for the breakpointable routine in end.o */
/* This should also be available in the SOM symbol dict. if end.o linked in */
/* Record some information about the current exception event */
static struct exception_event_record current_ex_event;
-/* Convenience struct */
-static struct symtab_and_line null_symtab_and_line =
-{NULL, 0, 0, 0};
/* Report current exception event. Returns a pointer to a record
that describes the kind of the event, where it was thrown from,
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
struct hppa_hpux_sigtramp_unwind_cache *info;
unsigned int flag;
- CORE_ADDR sp, scptr;
- int i, incr, off, szoff;
+ CORE_ADDR sp, scptr, off;
+ int i, incr, szoff;
if (*this_cache)
return *this_cache;
sp = frame_unwind_register_unsigned (next_frame, HPPA_SP_REGNUM);
- scptr = sp - 1352;
+ if (IS_32BIT_TARGET (gdbarch))
+ scptr = sp - 1352;
+ else
+ scptr = sp - 1520;
+
off = scptr;
/* See /usr/include/machine/save_state.h for the structure of the save_state_t
structure. */
- flag = read_memory_unsigned_integer(scptr, 4);
-
- if (!(flag & 0x40))
+ flag = read_memory_unsigned_integer(scptr + HPPA_HPUX_SS_FLAGS_OFFSET, 4);
+
+ if (!(flag & HPPA_HPUX_SS_WIDEREGS))
{
/* Narrow registers. */
- off = scptr + offsetof (save_state_t, ss_narrow);
+ off = scptr + HPPA_HPUX_SS_NARROW_OFFSET;
incr = 4;
szoff = 0;
}
else
{
/* Wide registers. */
- off = scptr + offsetof (save_state_t, ss_wide) + 8;
+ off = scptr + HPPA_HPUX_SS_WIDE_OFFSET + 8;
incr = 8;
szoff = (tdep->bytes_per_address == 4 ? 4 : 0);
}
{
if (hppa_hpux_tramp_reg[i] > 0)
info->saved_regs[hppa_hpux_tramp_reg[i]].addr = off + szoff;
+
off += incr;
}
static const struct frame_unwind *
hppa_hpux_sigtramp_unwind_sniffer (struct frame_info *next_frame)
{
+ struct unwind_table_entry *u;
CORE_ADDR pc = frame_pc_unwind (next_frame);
- char *name;
- find_pc_partial_function (pc, &name, NULL, NULL);
+ u = find_unwind_entry (pc);
+
+ /* If this is an export stub, try to get the unwind descriptor for
+ the actual function itself. */
+ if (u && u->stub_unwind.stub_type == EXPORT)
+ {
+ gdb_byte buf[HPPA_INSN_SIZE];
+ unsigned long insn;
+
+ if (!safe_frame_unwind_memory (next_frame, u->region_start,
+ buf, sizeof buf))
+ return NULL;
+
+ insn = extract_unsigned_integer (buf, sizeof buf);
+ if ((insn & 0xffe0e000) == 0xe8400000)
+ u = find_unwind_entry(u->region_start + hppa_extract_17 (insn) + 8);
+ }
- if (name && strcmp(name, "_sigreturn") == 0)
+ if (u && u->HP_UX_interrupt_marker)
return &hppa_hpux_sigtramp_frame_unwind;
return NULL;
hppa_hpux_search_pattern (CORE_ADDR start, CORE_ADDR end,
unsigned int *patterns, int count)
{
- unsigned int *buf;
+ int num_insns = (end - start + HPPA_INSN_SIZE) / HPPA_INSN_SIZE;
+ unsigned int *insns;
+ gdb_byte *buf;
int offset, i;
- int region, insns;
- region = end - start + 4;
- insns = region / 4;
- buf = (unsigned int *) alloca (region);
+ buf = alloca (num_insns * HPPA_INSN_SIZE);
+ insns = alloca (num_insns * sizeof (unsigned int));
- read_memory (start, (char *) buf, region);
+ read_memory (start, buf, num_insns * HPPA_INSN_SIZE);
+ for (i = 0; i < num_insns; i++, buf += HPPA_INSN_SIZE)
+ insns[i] = extract_unsigned_integer (buf, HPPA_INSN_SIZE);
- for (i = 0; i < insns; i++)
- buf[i] = extract_unsigned_integer (&buf[i], 4);
-
- for (offset = 0; offset <= insns - count; offset++)
+ for (offset = 0; offset <= num_insns - count; offset++)
{
for (i = 0; i < count; i++)
{
- if ((buf[offset + i] & patterns[i]) != patterns[i])
+ if ((insns[offset + i] & patterns[i]) != patterns[i])
break;
}
if (i == count)
break;
}
-
- if (offset <= insns - count)
- return start + offset * 4;
+
+ if (offset <= num_insns - count)
+ return start + offset * HPPA_INSN_SIZE;
else
return 0;
}
{
CORE_ADDR begin, end;
char *name;
- unsigned int insns[2];
+ gdb_byte buf[2 * HPPA_INSN_SIZE];
int offset;
find_pc_partial_function (SYMBOL_VALUE_ADDRESS (msym), &name,
if (name == NULL || begin == 0 || end == 0)
continue;
- if (target_read_memory (end - sizeof (insns), (char *)insns, sizeof (insns)) == 0)
+ if (target_read_memory (end - sizeof (buf), buf, sizeof (buf)) == 0)
{
- for (offset = 0; offset < ARRAY_SIZE (insns); offset++)
+ for (offset = 0; offset < sizeof (buf); offset++)
{
unsigned int insn;
- insn = extract_unsigned_integer (&insns[offset], 4);
+ insn = extract_unsigned_integer (buf + offset, HPPA_INSN_SIZE);
if (insn == 0xe840d002) /* bve,n (rp) */
{
- addr = (end - sizeof (insns)) + (offset * 4);
+ addr = (end - sizeof (buf)) + offset;
goto found_pattern;
}
}
CORE_ADDR *real_pc, CORE_ADDR *bp_addr)
{
CORE_ADDR pc, stubaddr;
- int argreg;
+ int argreg = 0;
pc = read_pc ();
\f
-/* Bit in the `ss_flag' member of `struct save_state' that indicates
- that the 64-bit register values are live. From
- <machine/save_state.h>. */
-#define HPPA_HPUX_SS_WIDEREGS 0x40
-
-/* Offsets of various parts of `struct save_state'. From
- <machine/save_state.h>. */
-#define HPPA_HPUX_SS_FLAGS_OFFSET 0
-#define HPPA_HPUX_SS_NARROW_OFFSET 4
-#define HPPA_HPUX_SS_FPBLOCK_OFFSET 256
-#define HPPA_HPUX_SS_WIDE_OFFSET 640
-
-/* The size of `struct save_state. */
-#define HPPA_HPUX_SAVE_STATE_SIZE 1152
-
-/* The size of `struct pa89_save_state', which corresponds to PA-RISC
- 1.1, the lowest common denominator that we support. */
-#define HPPA_HPUX_PA89_SAVE_STATE_SIZE 512
-
static void
hppa_hpux_supply_ss_narrow (struct regcache *regcache,
int regnum, const char *save_state)
{
if (strcmp (bfd_get_target (abfd), "hpux-core") == 0)
return GDB_OSABI_HPUX_SOM;
+ else if (strcmp (bfd_get_target (abfd), "elf64-hppa") == 0)
+ {
+ asection *section;
+
+ section = bfd_get_section_by_name (abfd, ".kernel");
+ if (section)
+ {
+ bfd_size_type size;
+ char *contents;
+
+ size = bfd_section_size (abfd, section);
+ contents = alloca (size);
+ if (bfd_get_section_contents (abfd, section, contents,
+ (file_ptr) 0, size)
+ && strcmp (contents, "HP-UX") == 0)
+ return GDB_OSABI_HPUX_ELF;
+ }
+ }
return GDB_OSABI_UNKNOWN;
}
gdbarch_register_osabi_sniffer (bfd_arch_unknown,
bfd_target_unknown_flavour,
hppa_hpux_core_osabi_sniffer);
+ gdbarch_register_osabi_sniffer (bfd_arch_hppa,
+ bfd_target_elf_flavour,
+ hppa_hpux_core_osabi_sniffer);
gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_HPUX_SOM,
hppa_hpux_som_init_abi);
projects / deliverable / binutils-gdb.git / blobdiff