aboutsummaryrefslogtreecommitdiff
path: root/gdb/hppanbsd-tdep.c
diff options
context:
space:
mode:
Diffstat (limited to 'gdb/hppanbsd-tdep.c')
-rw-r--r--gdb/hppanbsd-tdep.c228
1 files changed, 228 insertions, 0 deletions
diff --git a/gdb/hppanbsd-tdep.c b/gdb/hppanbsd-tdep.c
new file mode 100644
index 0000000..e8c31f9
--- /dev/null
+++ b/gdb/hppanbsd-tdep.c
@@ -0,0 +1,228 @@
+/* Target-dependent code for NetBSD/hppa
+
+ Copyright (C) 2008 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
+ (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.
+
+ 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 "osabi.h"
+#include "regcache.h"
+#include "regset.h"
+
+#include "trad-frame.h"
+#include "tramp-frame.h"
+
+#include "gdb_assert.h"
+#include "gdb_string.h"
+
+#include "hppa-tdep.h"
+
+/* From <machine/mcontext.h>. */
+static int hppanbsd_mc_reg_offset[] =
+{
+ /* r0 ... r31 */
+ -1, 1 * 4, 2 * 4, 3 * 4,
+ 4 * 4, 5 * 4, 6 * 4, 7 * 4,
+ 8 * 4, 9 * 4, 10 * 4, 11 * 4,
+ 12 * 4, 13 * 4, 14 * 4, 15 * 4,
+ 16 * 4, 17 * 4, 18 * 4, 19 * 4,
+ 20 * 4, 21 * 4, 22 * 4, 23 * 4,
+ 24 * 4, 25 * 4, 26 * 4, 27 * 4,
+ 28 * 4, 29 * 4, 30 * 4, 31 * 4,
+
+ 32 * 4, /* HPPA_SAR_REGNUM */
+ 35 * 4, /* HPPA_PCOQ_HEAD_REGNUM */
+ 33 * 4, /* HPPA_PCSQ_HEAD_REGNUM */
+ 36 * 4, /* HPPA_PCOQ_TAIL_REGNUM */
+ 34 * 4, /* HPPA_PCSQ_TAIL_REGNUM */
+ -1, /* HPPA_EIEM_REGNUM */
+ -1, /* HPPA_IIR_REGNUM */
+ -1, /* HPPA_ISR_REGNUM */
+ -1, /* HPPA_IOR_REGNUM */
+ 0 * 4, /* HPPA_IPSW_REGNUM */
+ -1, /* spare? */
+ 41 * 4, /* HPPA_SR4_REGNUM */
+ 37 * 4, /* sr0 */
+ 38 * 4, /* sr1 */
+ 39 * 4, /* sr2 */
+ 40 * 4, /* sr3 */
+
+ /* more tbd */
+};
+
+static void hppanbsd_sigtramp_cache_init (const struct tramp_frame *,
+ struct frame_info *,
+ struct trad_frame_cache *,
+ CORE_ADDR);
+
+static const struct tramp_frame hppanbsd_sigtramp_si4 =
+{
+ SIGTRAMP_FRAME,
+ 4,
+ {
+ { 0xc7d7c012, -1 }, /* bb,>=,n %arg3, 30, 1f */
+ { 0xd6e01c1e, -1 }, /* depwi 0,31,2,%arg3 */
+ { 0x0ee81093, -1 }, /* ldw 4(%arg3), %r19 */
+ { 0x0ee01097, -1 }, /* ldw 0(%arg3), %arg3 */
+ /* 1: */
+ { 0xe8404000, -1 }, /* blr %r0, %rp */
+ { 0xeae0c002, -1 }, /* bv,n %r0(%arg3) */
+ { 0x08000240, -1 }, /* nop */
+
+ { 0x0803025a, -1 }, /* copy %r3, %arg0 */
+ { 0x20200801, -1 }, /* ldil -40000000, %r1 */
+ { 0xe420e008, -1 }, /* be,l 4(%sr7, %r1), %sr0, %r31 */
+ { 0x34160268, -1 }, /* ldi 134, %t1 ; SYS_setcontext */
+
+ { 0x081c025a, -1 }, /* copy ret0, %arg0 */
+ { 0x20200801, -1 }, /* ldil -40000000, %r1 */
+ { 0xe420e008, -1 }, /* be,l 4(%sr7, %r1), %sr0, %r31 */
+ { 0x34160002, -1 }, /* ldi 1, %t1 ; SYS_exit */
+ { TRAMP_SENTINEL_INSN, -1 }
+ },
+ hppanbsd_sigtramp_cache_init
+};
+
+
+static void
+hppanbsd_sigtramp_cache_init (const struct tramp_frame *self,
+ struct frame_info *next_frame,
+ struct trad_frame_cache *this_cache,
+ CORE_ADDR func)
+{
+ struct gdbarch *gdbarch = get_frame_arch (next_frame);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ CORE_ADDR sp = frame_unwind_register_unsigned (next_frame, HPPA_SP_REGNUM);
+ CORE_ADDR base;
+ int *reg_offset;
+ int num_regs;
+ int i;
+
+ reg_offset = hppanbsd_mc_reg_offset;
+ num_regs = ARRAY_SIZE (hppanbsd_mc_reg_offset);
+
+ /* frame pointer */
+ base = sp - 0x280;
+ /* offsetof(struct sigframe_siginfo, sf_uc) = 128 */
+ base += 128;
+ /* offsetof(ucontext_t, uc_mcontext) == 40 */
+ base += 40;
+
+ for (i = 0; i < num_regs; i++)
+ if (reg_offset[i] != -1)
+ trad_frame_set_reg_addr (this_cache, i, base + reg_offset[i]);
+
+ /* Construct the frame ID using the function start. */
+ trad_frame_set_id (this_cache, frame_id_build (sp, func));
+}
+
+/* Core file support. */
+
+/* Sizeof `struct reg' in <machine/reg.h>. */
+#define HPPANBSD_SIZEOF_GREGS (44 * 4)
+
+static int hppanbsd_reg_offset[] =
+{
+ /* r0 ... r31 */
+ -1, 1 * 4, 2 * 4, 3 * 4,
+ 4 * 4, 5 * 4, 6 * 4, 7 * 4,
+ 8 * 4, 9 * 4, 10 * 4, 11 * 4,
+ 12 * 4, 13 * 4, 14 * 4, 15 * 4,
+ 16 * 4, 17 * 4, 18 * 4, 19 * 4,
+ 20 * 4, 21 * 4, 22 * 4, 23 * 4,
+ 24 * 4, 25 * 4, 26 * 4, 27 * 4,
+ 28 * 4, 29 * 4, 30 * 4, 31 * 4,
+
+ 32 * 4, /* HPPA_SAR_REGNUM */
+ 35 * 4, /* HPPA_PCOQ_HEAD_REGNUM */
+ 33 * 4, /* HPPA_PCSQ_HEAD_REGNUM */
+ 36 * 4, /* HPPA_PCOQ_TAIL_REGNUM */
+ 34 * 4, /* HPPA_PCSQ_TAIL_REGNUM */
+ -1, /* HPPA_EIEM_REGNUM */
+ -1, /* HPPA_IIR_REGNUM */
+ -1, /* HPPA_ISR_REGNUM */
+ -1, /* HPPA_IOR_REGNUM */
+ 0 * 4, /* HPPA_IPSW_REGNUM */
+};
+
+/* 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
+hppanbsd_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 >= HPPANBSD_SIZEOF_GREGS);
+
+ for (i = 0; i < ARRAY_SIZE (hppanbsd_reg_offset); i++)
+ if (hppanbsd_reg_offset[i] != -1)
+ if (regnum == -1 || regnum == i)
+ regcache_raw_supply (regcache, i, regs + hppanbsd_reg_offset[i]);
+}
+
+/* NetBSD/hppa register set. */
+
+static struct regset hppanbsd_gregset =
+{
+ NULL,
+ hppanbsd_supply_gregset
+};
+
+/* Return the appropriate register set for the core section identified
+ by SECT_NAME and SECT_SIZE. */
+
+static const struct regset *
+hppanbsd_regset_from_core_section (struct gdbarch *gdbarch,
+ const char *sect_name, size_t sect_size)
+{
+ if (strcmp (sect_name, ".reg") == 0 && sect_size >= HPPANBSD_SIZEOF_GREGS)
+ return &hppanbsd_gregset;
+
+ return NULL;
+}
+
+void hppabsd_init_abi (struct gdbarch_info, struct gdbarch *);
+
+static void
+hppanbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
+{
+ /* Obviously NetBSD is BSD-based. */
+ hppabsd_init_abi (info, gdbarch);
+
+ /* Core file support. */
+ set_gdbarch_regset_from_core_section
+ (gdbarch, hppanbsd_regset_from_core_section);
+
+ tramp_frame_prepend_unwinder (gdbarch, &hppanbsd_sigtramp_si4);
+}
+
+
+/* Provide a prototype to silence -Wmissing-prototypes. */
+void _initialize_hppabsd_tdep (void);
+
+void
+_initialize_hppanbsd_tdep (void)
+{
+ gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_NETBSD_ELF,
+ hppanbsd_init_abi);
+}