X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fhppabsd-tdep.c;h=a6feefbff46c0ceb13eac966033f85b3baf46848;hb=11cf4ffb5e256d268a8f4cea0fc88a0a46bf824c;hp=77c420eb630644bbf823347f0b71ecd4c6b6e9e6;hpb=197e01b6dcd118b70ed3621b62b2ff3fa929d50f;p=deliverable%2Fbinutils-gdb.git
diff --git a/gdb/hppabsd-tdep.c b/gdb/hppabsd-tdep.c
index 77c420eb63..a6feefbff4 100644
--- a/gdb/hppabsd-tdep.c
+++ b/gdb/hppabsd-tdep.c
@@ -1,12 +1,12 @@
/* Target-dependent code for HP PA-RISC BSD's.
- Copyright (C) 2004, 2005 Free Software Foundation, Inc.
+ Copyright (C) 2004-2016 Free Software Foundation, Inc.
This file is part of GDB.
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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
@@ -15,86 +15,24 @@
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., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with this program. If not, see . */
#include "defs.h"
-#include "arch-utils.h"
-#include "symtab.h"
#include "objfiles.h"
-#include "osabi.h"
-#include "regcache.h"
-#include "regset.h"
#include "target.h"
#include "value.h"
-#include "gdb_assert.h"
-#include "gdb_string.h"
-
#include "elf/common.h"
#include "hppa-tdep.h"
+#include "hppabsd-tdep.h"
+#include "dwarf2-frame.h"
#include "solib-svr4.h"
-/* Core file support. */
-
-/* Sizeof `struct reg' in . */
-#define HPPABSD_SIZEOF_GREGS (34 * 4)
-
-/* Supply register REGNUM from the buffer specified by GREGS and LEN
- in the general-purpose register set REGSET to register cache
- REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
-
-static void
-hppabsd_supply_gregset (const struct regset *regset, struct regcache *regcache,
- int regnum, const void *gregs, size_t len)
-{
- const gdb_byte *regs = gregs;
- size_t offset;
- int i;
-
- gdb_assert (len >= HPPABSD_SIZEOF_GREGS);
-
- for (i = HPPA_R1_REGNUM, offset = 4; i <= HPPA_R31_REGNUM; i++, offset += 4)
- {
- if (regnum == -1 || regnum == i)
- regcache_raw_supply (regcache, i, regs + offset);
- }
-
- if (regnum == -1 || regnum == HPPA_SAR_REGNUM)
- regcache_raw_supply (regcache, HPPA_SAR_REGNUM, regs);
- if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM)
- regcache_raw_supply (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 32 * 4);
- if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM)
- regcache_raw_supply (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 33 * 4);
-}
-
-/* OpenBSD/hppa register set. */
-
-static struct regset hppabsd_gregset =
-{
- NULL,
- hppabsd_supply_gregset
-};
-
-/* Return the appropriate register set for the core section identified
- by SECT_NAME and SECT_SIZE. */
-
-static const struct regset *
-hppabsd_regset_from_core_section (struct gdbarch *gdbarch,
- const char *sect_name, size_t sect_size)
-{
- if (strcmp (sect_name, ".reg") == 0 && sect_size >= HPPABSD_SIZEOF_GREGS)
- return &hppabsd_gregset;
-
- return NULL;
-}
-
-
-CORE_ADDR
-hppabsd_find_global_pointer (struct value *function)
+static CORE_ADDR
+hppabsd_find_global_pointer (struct gdbarch *gdbarch, struct value *function)
{
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
CORE_ADDR faddr = value_as_address (function);
struct obj_section *faddr_sec;
gdb_byte buf[4];
@@ -104,13 +42,13 @@ hppabsd_find_global_pointer (struct value *function)
if (faddr & 2)
{
if (target_read_memory ((faddr & ~3) + 4, buf, sizeof buf) == 0)
- return extract_unsigned_integer (buf, sizeof buf);
+ return extract_unsigned_integer (buf, sizeof buf, byte_order);
}
/* If the address is in the .plt section, then the real function
hasn't yet been fixed up by the linker so we cannot determine the
Global Pointer for that function. */
- if (in_plt_section (faddr, NULL))
+ if (in_plt_section (faddr))
return 0;
faddr_sec = find_pc_section (faddr);
@@ -126,9 +64,10 @@ hppabsd_find_global_pointer (struct value *function)
if (sec < faddr_sec->objfile->sections_end)
{
- CORE_ADDR addr = sec->addr;
+ CORE_ADDR addr = obj_section_addr (sec);
+ CORE_ADDR endaddr = obj_section_endaddr (sec);
- while (addr < sec->endaddr)
+ while (addr < endaddr)
{
gdb_byte buf[4];
LONGEST tag;
@@ -136,7 +75,7 @@ hppabsd_find_global_pointer (struct value *function)
if (target_read_memory (addr, buf, sizeof buf) != 0)
break;
- tag = extract_signed_integer (buf, sizeof buf);
+ tag = extract_signed_integer (buf, sizeof buf, byte_order);
if (tag == DT_PLTGOT)
{
CORE_ADDR pltgot;
@@ -144,11 +83,13 @@ hppabsd_find_global_pointer (struct value *function)
if (target_read_memory (addr + 4, buf, sizeof buf) != 0)
break;
- /* The OpenBSD ld.so doesn't relocate DT_PLTGOT, so
+ /* The NetBSD/OpenBSD ld.so doesn't relocate DT_PLTGOT, so
we have to do it ourselves. */
- pltgot = extract_unsigned_integer (buf, sizeof buf);
+ pltgot = extract_unsigned_integer (buf, sizeof buf,
+ byte_order);
pltgot += ANOFFSET (sec->objfile->section_offsets,
SECT_OFF_TEXT (sec->objfile));
+
return pltgot;
}
@@ -165,50 +106,36 @@ hppabsd_find_global_pointer (struct value *function)
static void
+hppabsd_dwarf2_frame_init_reg (struct gdbarch *gdbarch, int regnum,
+ struct dwarf2_frame_state_reg *reg,
+ struct frame_info *this_frame)
+{
+ if (regnum == HPPA_PCOQ_HEAD_REGNUM)
+ reg->how = DWARF2_FRAME_REG_RA;
+ else if (regnum == HPPA_SP_REGNUM)
+ reg->how = DWARF2_FRAME_REG_CFA;
+}
+
+void
hppabsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
- /* Core file support. */
- set_gdbarch_regset_from_core_section
- (gdbarch, hppabsd_regset_from_core_section);
+ /* OpenBSD and NetBSD have a 64-bit 'long double'. */
+ set_gdbarch_long_double_bit (gdbarch, 64);
+ set_gdbarch_long_double_format (gdbarch, floatformats_ieee_double);
/* OpenBSD and NetBSD use ELF. */
- tdep->find_global_pointer = hppabsd_find_global_pointer;
tdep->is_elf = 1;
+ tdep->find_global_pointer = hppabsd_find_global_pointer;
+ tdep->in_solib_call_trampoline = hppa_in_solib_call_trampoline;
+ set_gdbarch_skip_trampoline_code (gdbarch, hppa_skip_trampoline_code);
- /* OpenBSD and NetBSD uses SVR4-style shared libraries. */
+ /* OpenBSD and NetBSD use SVR4-style shared libraries. */
set_solib_svr4_fetch_link_map_offsets
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
-}
-
-
-/* OpenBSD uses uses the traditional NetBSD core file format, even for
- ports that use ELF. */
-#define GDB_OSABI_NETBSD_CORE GDB_OSABI_OPENBSD_ELF
-
-static enum gdb_osabi
-hppabsd_core_osabi_sniffer (bfd *abfd)
-{
- if (strcmp (bfd_get_target (abfd), "netbsd-core") == 0)
- return GDB_OSABI_NETBSD_CORE;
-
- return GDB_OSABI_UNKNOWN;
-}
-
-
-/* Provide a prototype to silence -Wmissing-prototypes. */
-void _initialize_hppabsd_tdep (void);
-void
-_initialize_hppabsd_tdep (void)
-{
- /* BFD doesn't set a flavour for NetBSD style a.out core files. */
- gdbarch_register_osabi_sniffer (bfd_arch_hppa, bfd_target_unknown_flavour,
- hppabsd_core_osabi_sniffer);
-
- gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_NETBSD_ELF,
- hppabsd_init_abi);
- gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_OPENBSD_ELF,
- hppabsd_init_abi);
+ /* Hook in the DWARF CFI frame unwinder. */
+ dwarf2_frame_set_init_reg (gdbarch, hppabsd_dwarf2_frame_init_reg);
+ dwarf2_append_unwinders (gdbarch);
}