-/* Target-dependent code for Linux running on PA-RISC, for GDB.
+/* Target-dependent code for GNU/Linux running on PA-RISC, for GDB.
- Copyright 2004 Free Software Foundation, Inc.
+ Copyright (C) 2004, 2006 Free Software Foundation, Inc.
-This file is part of GDB.
+ 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
-(at your option) any later version.
+ 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.
+ 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ 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. */
#include "defs.h"
#include "gdbcore.h"
if (reg >= 32 && reg <= 85)
return HPPA_FP4_REGNUM + (reg - 32);
- warning ("Unmapped DWARF Register #%d encountered\n", reg);
+ warning (_("Unmapped DWARF Register #%d encountered."), reg);
return -1;
}
#endif
unsigned int mask; /* ... with this mask. */
};
-/* See bfd/elf32-hppa.c */
-static struct insn_pattern hppa_long_branch_stub[] = {
- /* ldil LR'xxx,%r1 */
- { 0x20200000, 0xffe00000 },
- /* be,n RR'xxx(%sr4,%r1) */
- { 0xe0202002, 0xffe02002 },
- { 0, 0 }
-};
-
-static struct insn_pattern hppa_long_branch_pic_stub[] = {
- /* b,l .+8, %r1 */
- { 0xe8200000, 0xffe00000 },
- /* addil LR'xxx - ($PIC_pcrel$0 - 4), %r1 */
- { 0x28200000, 0xffe00000 },
- /* be,n RR'xxxx - ($PIC_pcrel$0 - 8)(%sr4, %r1) */
- { 0xe0202002, 0xffe02002 },
- { 0, 0 }
-};
-
-static struct insn_pattern hppa_import_stub[] = {
- /* addil LR'xxx, %dp */
- { 0x2b600000, 0xffe00000 },
- /* ldw RR'xxx(%r1), %r21 */
- { 0x48350000, 0xffffb000 },
- /* bv %r0(%r21) */
- { 0xeaa0c000, 0xffffffff },
- /* ldw RR'xxx+4(%r1), %r19 */
- { 0x48330000, 0xffffb000 },
- { 0, 0 }
-};
-
-static struct insn_pattern hppa_import_pic_stub[] = {
- /* addil LR'xxx,%r19 */
- { 0x2a600000, 0xffe00000 },
- /* ldw RR'xxx(%r1),%r21 */
- { 0x48350000, 0xffffb000 },
- /* bv %r0(%r21) */
- { 0xeaa0c000, 0xffffffff },
- /* ldw RR'xxx+4(%r1),%r19 */
- { 0x48330000, 0xffffb000 },
- { 0, 0 },
-};
-
-static struct insn_pattern hppa_plt_stub[] = {
- /* b,l 1b, %r20 - 1b is 3 insns before here */
- { 0xea9f1fdd, 0xffffffff },
- /* depi 0,31,2,%r20 */
- { 0xd6801c1e, 0xffffffff },
- { 0, 0 }
-};
-
static struct insn_pattern hppa_sigtramp[] = {
/* ldi 0, %r25 or ldi 1, %r25 */
{ 0x34190000, 0xfffffffd },
{
char buf[4];
- read_memory_nobpt (npc, buf, 4);
+ deprecated_read_memory_nobpt (npc, buf, 4);
insn[i] = extract_unsigned_integer (buf, 4);
if ((insn[i] & pattern[i].mask) == pattern[i].data)
npc += 4;
return 1;
}
-static int
-hppa_linux_in_dyncall (CORE_ADDR pc)
-{
- static CORE_ADDR dyncall = 0;
-
- /* FIXME: if we switch exec files, dyncall should be reinitialized */
- if (!dyncall)
- {
- struct minimal_symbol *minsym;
-
- minsym = lookup_minimal_symbol ("$$dyncall", NULL, NULL);
- if (minsym)
- dyncall = SYMBOL_VALUE_ADDRESS (minsym);
- else
- dyncall = -1;
- }
-
- return pc == dyncall;
-}
-
-/* There are several kinds of "trampolines" that we need to deal with:
- - long branch stubs: these are inserted by the linker when a branch
- target is too far away for a branch insn to reach
- - plt stubs: these should go into the .plt section, so are easy to find
- - import stubs: used to call from object to shared lib or shared lib to
- shared lib; these go in regular text sections. In fact the linker tries
- to put them throughout the code because branches have limited reachability.
- We use the same mechanism as ppc64 to recognize the stub insn patterns.
- - $$dyncall: similar to hpux, hppa-linux uses $$dyncall for indirect function
- calls. $$dyncall is exported by libgcc.a */
-static int
-hppa_linux_in_solib_call_trampoline (CORE_ADDR pc, char *name)
-{
- unsigned int insn[HPPA_MAX_INSN_PATTERN_LEN];
- int r;
-
- r = in_plt_section (pc, name)
- || hppa_linux_in_dyncall (pc)
- || insns_match_pattern (pc, hppa_import_stub, insn)
- || insns_match_pattern (pc, hppa_import_pic_stub, insn)
- || insns_match_pattern (pc, hppa_long_branch_stub, insn)
- || insns_match_pattern (pc, hppa_long_branch_pic_stub, insn);
-
- return r;
-}
-
-static CORE_ADDR
-hppa_linux_skip_trampoline_code (CORE_ADDR pc)
-{
- unsigned int insn[HPPA_MAX_INSN_PATTERN_LEN];
- int dp_rel, pic_rel;
-
- /* dyncall handles both PLABELs and direct addresses */
- if (hppa_linux_in_dyncall (pc))
- {
- pc = (CORE_ADDR) read_register (22);
-
- /* PLABELs have bit 30 set; if it's a PLABEL, then dereference it */
- if (pc & 0x2)
- pc = (CORE_ADDR) read_memory_integer (pc & ~0x3, TARGET_PTR_BIT / 8);
-
- return pc;
- }
-
- dp_rel = pic_rel = 0;
- if ((dp_rel = insns_match_pattern (pc, hppa_import_stub, insn))
- || (pic_rel = insns_match_pattern (pc, hppa_import_pic_stub, insn)))
- {
- /* Extract the target address from the addil/ldw sequence. */
- pc = hppa_extract_21 (insn[0]) + hppa_extract_14 (insn[1]);
-
- if (dp_rel)
- pc += (CORE_ADDR) read_register (27);
- else
- pc += (CORE_ADDR) read_register (19);
-
- /* fallthrough */
- }
-
- if (in_plt_section (pc, NULL))
- {
- pc = (CORE_ADDR) read_memory_integer (pc, TARGET_PTR_BIT / 8);
-
- /* if the plt slot has not yet been resolved, the target will
- be the plt stub */
- if (in_plt_section (pc, NULL))
- {
- /* Sanity check: are we pointing to the plt stub? */
- if (insns_match_pattern (pc, hppa_plt_stub, insn))
- {
- /* this should point to the fixup routine */
- pc = (CORE_ADDR) read_memory_integer (pc + 8, TARGET_PTR_BIT / 8);
- }
- else
- {
- error ("Cannot resolve plt stub at 0x%s\n",
- paddr_nz (pc));
- pc = 0;
- }
- }
- }
-
- return pc;
-}
-
/* Signal frames. */
/* (This is derived from MD_FALLBACK_FRAME_STATE_FOR in gcc.)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
- /* Linux is always ELF. */
+ /* GNU/Linux is always ELF. */
tdep->is_elf = 1;
tdep->find_global_pointer = hppa_linux_find_global_pointer;
set_solib_svr4_fetch_link_map_offsets
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
- set_gdbarch_in_solib_call_trampoline
- (gdbarch, hppa_linux_in_solib_call_trampoline);
- set_gdbarch_skip_trampoline_code
- (gdbarch, hppa_linux_skip_trampoline_code);
+ tdep->in_solib_call_trampoline = hppa_in_solib_call_trampoline;
+ set_gdbarch_skip_trampoline_code (gdbarch, hppa_skip_trampoline_code);
/* GNU/Linux uses the dynamic linker included in the GNU C Library. */
set_gdbarch_skip_solib_resolver (gdbarch, glibc_skip_solib_resolver);
frame_unwind_append_sniffer (gdbarch, dwarf2_frame_sniffer);
frame_base_append_sniffer (gdbarch, dwarf2_frame_base_sniffer);
#endif
+
+ /* Enable TLS support. */
+ set_gdbarch_fetch_tls_load_module_address (gdbarch,
+ svr4_fetch_objfile_link_map);
}
void
projects / deliverable / binutils-gdb.git / blobdiff