/* Target-dependent code for GNU/Linux running on PA-RISC, for GDB.
- Copyright (C) 2004 Free Software Foundation, Inc.
+ Copyright (C) 2004, 2006, 2007 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,
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 <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "gdbcore.h"
#include "trad-frame.h"
#include "dwarf2-frame.h"
#include "value.h"
+#include "regset.h"
+#include "regcache.h"
#include "hppa-tdep.h"
#include "elf/common.h"
#endif
static void
-hppa_linux_target_write_pc (CORE_ADDR v, ptid_t ptid)
+hppa_linux_target_write_pc (struct regcache *regcache, CORE_ADDR v)
{
/* Probably this should be done by the kernel, but it isn't. */
- write_register_pid (HPPA_PCOQ_HEAD_REGNUM, v | 0x3, ptid);
- write_register_pid (HPPA_PCOQ_TAIL_REGNUM, (v + 4) | 0x3, ptid);
+ regcache_cooked_write_unsigned (regcache, HPPA_PCOQ_HEAD_REGNUM, v | 0x3);
+ regcache_cooked_write_unsigned (regcache, HPPA_PCOQ_TAIL_REGNUM, (v + 4) | 0x3);
}
/* An instruction to match. */
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];
- deprecated_read_memory_nobpt (npc, buf, 4);
+ 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;
}
-/* The relaxed version of the insn matcher allows us to match from somewhere
- inside the pattern, by looking backwards in the instruction scheme. */
-static int
-insns_match_pattern_relaxed (CORE_ADDR pc,
- struct insn_pattern *pattern,
- unsigned int *insn)
-{
- int pat_len = 0;
- int offset;
-
- while (pattern[pat_len].mask)
- pat_len++;
-
- for (offset = 0; offset < pat_len; offset++)
- {
- if (insns_match_pattern (pc - offset * 4,
- pattern, insn))
- return 1;
- }
-
- return 0;
-}
-
-static int
-hppa_linux_in_dyncall (CORE_ADDR pc)
-{
- struct unwind_table_entry *u;
- u = find_unwind_entry (hppa_symbol_address ("$$dyncall"));
-
- if (!u)
- return 0;
-
- return pc >= u->region_start && pc <= u->region_end;
-}
-
-/* There are several kinds of "trampolines" that we need to deal with:
- - long branch stubs: these are inserted by the linker when a branch
- target is too far away for a branch insn to reach
- - plt stubs: these should go into the .plt section, so are easy to find
- - import stubs: used to call from object to shared lib or shared lib to
- shared lib; these go in regular text sections. In fact the linker tries
- to put them throughout the code because branches have limited reachability.
- We use the same mechanism as ppc64 to recognize the stub insn patterns.
- - $$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;
- struct unwind_table_entry *u;
-
- /* on hppa-linux, linker stubs have no unwind information. Since the pattern
- matching for linker stubs can be quite slow, we try to avoid it if
- we can. */
- u = find_unwind_entry (pc);
-
- r = in_plt_section (pc, name)
- || hppa_linux_in_dyncall (pc)
- || (u == NULL
- && (insns_match_pattern_relaxed (pc, hppa_import_stub, insn)
- || insns_match_pattern_relaxed (pc, hppa_import_pic_stub, insn)
- || insns_match_pattern_relaxed (pc, hppa_long_branch_stub, insn)
- || insns_match_pattern_relaxed (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."),
- paddr_nz (pc));
- pc = 0;
- }
- }
- }
-
- return pc;
-}
-
/* Signal frames. */
/* (This is derived from MD_FALLBACK_FRAME_STATE_FOR in gcc.)
int regnum, int *optimizedp,
enum lval_type *lvalp,
CORE_ADDR *addrp,
- int *realnump, void *valuep)
+ int *realnump, gdb_byte *valuep)
{
struct hppa_linux_sigtramp_unwind_cache *info
= hppa_linux_sigtramp_frame_unwind_cache (next_frame, this_prologue_cache);
}
return 0;
}
+\f
+/*
+ * Registers saved in a coredump:
+ * gr0..gr31
+ * sr0..sr7
+ * iaoq0..iaoq1
+ * iasq0..iasq1
+ * sar, iir, isr, ior, ipsw
+ * cr0, cr24..cr31
+ * cr8,9,12,13
+ * cr10, cr15
+ */
+
+#define GR_REGNUM(_n) (HPPA_R0_REGNUM+_n)
+#define TR_REGNUM(_n) (HPPA_TR0_REGNUM+_n)
+static const int greg_map[] =
+ {
+ GR_REGNUM(0), GR_REGNUM(1), GR_REGNUM(2), GR_REGNUM(3),
+ GR_REGNUM(4), GR_REGNUM(5), GR_REGNUM(6), GR_REGNUM(7),
+ GR_REGNUM(8), GR_REGNUM(9), GR_REGNUM(10), GR_REGNUM(11),
+ GR_REGNUM(12), GR_REGNUM(13), GR_REGNUM(14), GR_REGNUM(15),
+ GR_REGNUM(16), GR_REGNUM(17), GR_REGNUM(18), GR_REGNUM(19),
+ GR_REGNUM(20), GR_REGNUM(21), GR_REGNUM(22), GR_REGNUM(23),
+ GR_REGNUM(24), GR_REGNUM(25), GR_REGNUM(26), GR_REGNUM(27),
+ GR_REGNUM(28), GR_REGNUM(29), GR_REGNUM(30), GR_REGNUM(31),
+
+ HPPA_SR4_REGNUM+1, HPPA_SR4_REGNUM+2, HPPA_SR4_REGNUM+3, HPPA_SR4_REGNUM+4,
+ HPPA_SR4_REGNUM, HPPA_SR4_REGNUM+5, HPPA_SR4_REGNUM+6, HPPA_SR4_REGNUM+7,
+
+ HPPA_PCOQ_HEAD_REGNUM, HPPA_PCOQ_TAIL_REGNUM,
+ HPPA_PCSQ_HEAD_REGNUM, HPPA_PCSQ_TAIL_REGNUM,
+
+ HPPA_SAR_REGNUM, HPPA_IIR_REGNUM, HPPA_ISR_REGNUM, HPPA_IOR_REGNUM,
+ HPPA_IPSW_REGNUM, HPPA_RCR_REGNUM,
+
+ TR_REGNUM(0), TR_REGNUM(1), TR_REGNUM(2), TR_REGNUM(3),
+ TR_REGNUM(4), TR_REGNUM(5), TR_REGNUM(6), TR_REGNUM(7),
+
+ HPPA_PID0_REGNUM, HPPA_PID1_REGNUM, HPPA_PID2_REGNUM, HPPA_PID3_REGNUM,
+ HPPA_CCR_REGNUM, HPPA_EIEM_REGNUM,
+ };
+
+static void
+hppa_linux_supply_regset (const struct regset *regset,
+ struct regcache *regcache,
+ int regnum, const void *regs, size_t len)
+{
+ struct gdbarch *arch = get_regcache_arch (regcache);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (arch);
+ const char *buf = regs;
+ int i, offset;
+
+ offset = 0;
+ for (i = 0; i < ARRAY_SIZE (greg_map); i++)
+ {
+ if (regnum == greg_map[i] || regnum == -1)
+ regcache_raw_supply (regcache, greg_map[i], buf + offset);
+
+ offset += tdep->bytes_per_address;
+ }
+}
+
+static void
+hppa_linux_supply_fpregset (const struct regset *regset,
+ struct regcache *regcache,
+ int regnum, const void *regs, size_t len)
+{
+ const char *buf = regs;
+ int i, offset;
+
+ offset = 0;
+ for (i = 0; i < 31; i++)
+ {
+ if (regnum == HPPA_FP0_REGNUM + i || regnum == -1)
+ regcache_raw_supply (regcache, HPPA_FP0_REGNUM + i,
+ buf + offset);
+ offset += 8;
+ }
+}
+
+/* HPPA Linux kernel register set. */
+static struct regset hppa_linux_regset =
+{
+ NULL,
+ hppa_linux_supply_regset
+};
+
+static struct regset hppa_linux_fpregset =
+{
+ NULL,
+ hppa_linux_supply_fpregset
+};
+
+static const struct regset *
+hppa_linux_regset_from_core_section (struct gdbarch *gdbarch,
+ const char *sect_name,
+ size_t sect_size)
+{
+ if (strcmp (sect_name, ".reg") == 0)
+ return &hppa_linux_regset;
+ else if (strcmp (sect_name, ".reg2") == 0)
+ return &hppa_linux_fpregset;
+
+ return NULL;
+}
+\f
/* Forward declarations. */
extern initialize_file_ftype _initialize_hppa_linux_tdep;
set_solib_svr4_fetch_link_map_offsets
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
- tdep->in_solib_call_trampoline = 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);
more work in gcc and glibc first. */
set_gdbarch_long_double_bit (gdbarch, 64);
+ set_gdbarch_regset_from_core_section
+ (gdbarch, hppa_linux_regset_from_core_section);
+
#if 0
/* Dwarf-2 unwinding support. Not yet working. */
set_gdbarch_dwarf_reg_to_regnum (gdbarch, hppa_dwarf_reg_to_regnum);
_initialize_hppa_linux_tdep (void)
{
gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_LINUX, hppa_linux_init_abi);
+ gdbarch_register_osabi (bfd_arch_hppa, bfd_mach_hppa20w, GDB_OSABI_LINUX, hppa_linux_init_abi);
}