/* Target-dependent code for the Matsushita MN10300 for GDB, the GNU debugger.
- Copyright 2003, 2004, 2005
- Free Software Foundation, Inc.
+
+ Copyright (C) 2003-2014 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., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "gdbcore.h"
-#include "gdb_string.h"
#include "regcache.h"
#include "mn10300-tdep.h"
-#include "gdb_assert.h"
#include "bfd.h"
#include "elf-bfd.h"
#include "osabi.h"
#include "regset.h"
#include "solib-svr4.h"
-
-#include <stdlib.h>
+#include "frame.h"
+#include "trad-frame.h"
+#include "tramp-frame.h"
+#include "linux-tdep.h"
/* Transliterated from <asm-mn10300/elf.h>... */
#define MN10300_ELF_NGREG 28
Given a section name and size, create a struct reg object
with a supply_register and a collect_register method. */
-/* Copy register value of REGNUM from regset to regcache.
+/* Copy register value of REGNUM from regset to regcache.
If REGNUM is -1, do this for all gp registers in regset. */
static void
return;
}
-/* Copy fp register value of REGNUM from regset to regcache.
- If REGNUM is -1, do this for all fp registers in regset. */
+/* Copy fp register value of REGNUM from regset to regcache.
+ If REGNUM is -1, do this for all fp registers in regset. */
static void
am33_supply_fpregset_method (const struct regset *regset,
E_FPCR_REGNUM, fpregs, len);
}
else if (regnum == E_FPCR_REGNUM)
- regcache_raw_supply (current_regcache, E_FPCR_REGNUM,
+ regcache_raw_supply (regcache, E_FPCR_REGNUM,
&fpregset->fpcr);
- else if (E_FS0_REGNUM <= regnum && regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG)
- regcache_raw_supply (current_regcache, regnum,
+ else if (E_FS0_REGNUM <= regnum
+ && regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG)
+ regcache_raw_supply (regcache, regnum,
&fpregset->fpregs[regnum - E_FS0_REGNUM]);
return;
E_FPCR_REGNUM, fpregs, len);
}
else if (regnum == E_FPCR_REGNUM)
- regcache_raw_collect (current_regcache, E_FPCR_REGNUM,
+ regcache_raw_collect (regcache, E_FPCR_REGNUM,
&fpregset->fpcr);
else if (E_FS0_REGNUM <= regnum
&& regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG)
- regcache_raw_collect (current_regcache, regnum,
+ regcache_raw_collect (regcache, regnum,
&fpregset->fpregs[regnum - E_FS0_REGNUM]);
return;
}
-/* Create a struct regset from a corefile register section. */
+static const struct regset am33_gregset =
+ {
+ NULL, am33_supply_gregset_method, am33_collect_gregset_method
+ };
-static const struct regset *
-am33_regset_from_core_section (struct gdbarch *gdbarch,
- const char *sect_name,
- size_t sect_size)
-{
- /* We will call regset_alloc, and pass the names of the supply and
- collect methods. */
+static const struct regset am33_fpregset =
+ {
+ NULL, am33_supply_fpregset_method, am33_collect_fpregset_method
+ };
- if (sect_size == sizeof (mn10300_elf_fpregset_t))
- return regset_alloc (gdbarch,
- am33_supply_fpregset_method,
- am33_collect_fpregset_method);
- else
- return regset_alloc (gdbarch,
- am33_supply_gregset_method,
- am33_collect_gregset_method);
+/* Iterate over core file register note sections. */
+
+static void
+am33_iterate_over_regset_sections (struct gdbarch *gdbarch,
+ iterate_over_regset_sections_cb *cb,
+ void *cb_data,
+ const struct regcache *regcache)
+{
+ cb (".reg", sizeof (mn10300_elf_gregset_t), &am33_gregset,
+ NULL, cb_data);
+ cb (".reg2", sizeof(mn10300_elf_fpregset_t), &am33_fpregset,
+ NULL, cb_data);
}
+\f
+static void
+am33_linux_sigframe_cache_init (const struct tramp_frame *self,
+ struct frame_info *this_frame,
+ struct trad_frame_cache *this_cache,
+ CORE_ADDR func);
+
+static const struct tramp_frame am33_linux_sigframe = {
+ SIGTRAMP_FRAME,
+ 1,
+ {
+ /* mov 119,d0 */
+ { 0x2c, -1 },
+ { 0x77, -1 },
+ { 0x00, -1 },
+ /* syscall 0 */
+ { 0xf0, -1 },
+ { 0xe0, -1 },
+ { TRAMP_SENTINEL_INSN, -1 }
+ },
+ am33_linux_sigframe_cache_init
+};
+
+static const struct tramp_frame am33_linux_rt_sigframe = {
+ SIGTRAMP_FRAME,
+ 1,
+ {
+ /* mov 173,d0 */
+ { 0x2c, -1 },
+ { 0xad, -1 },
+ { 0x00, -1 },
+ /* syscall 0 */
+ { 0xf0, -1 },
+ { 0xe0, -1 },
+ { TRAMP_SENTINEL_INSN, -1 }
+ },
+ am33_linux_sigframe_cache_init
+};
+
+/* Relevant struct definitions for signal handling...
+
+From arch/mn10300/kernel/sigframe.h:
+
+struct sigframe
+{
+ void (*pretcode)(void);
+ int sig;
+ struct sigcontext *psc;
+ struct sigcontext sc;
+ struct fpucontext fpuctx;
+ unsigned long extramask[_NSIG_WORDS-1];
+ char retcode[8];
+};
+
+struct rt_sigframe
+{
+ void (*pretcode)(void);
+ int sig;
+ struct siginfo *pinfo;
+ void *puc;
+ struct siginfo info;
+ struct ucontext uc;
+ struct fpucontext fpuctx;
+ char retcode[8];
+};
+
+From include/asm-mn10300/ucontext.h:
+
+struct ucontext {
+ unsigned long uc_flags;
+ struct ucontext *uc_link;
+ stack_t uc_stack;
+ struct sigcontext uc_mcontext;
+ sigset_t uc_sigmask;
+};
+
+From include/asm-mn10300/sigcontext.h:
+
+struct fpucontext {
+ unsigned long fs[32];
+ unsigned long fpcr;
+};
+
+struct sigcontext {
+ unsigned long d0;
+ unsigned long d1;
+ unsigned long d2;
+ unsigned long d3;
+ unsigned long a0;
+ unsigned long a1;
+ unsigned long a2;
+ unsigned long a3;
+ unsigned long e0;
+ unsigned long e1;
+ unsigned long e2;
+ unsigned long e3;
+ unsigned long e4;
+ unsigned long e5;
+ unsigned long e6;
+ unsigned long e7;
+ unsigned long lar;
+ unsigned long lir;
+ unsigned long mdr;
+ unsigned long mcvf;
+ unsigned long mcrl;
+ unsigned long mcrh;
+ unsigned long mdrq;
+ unsigned long sp;
+ unsigned long epsw;
+ unsigned long pc;
+ struct fpucontext *fpucontext;
+ unsigned long oldmask;
+}; */
+
+
+#define AM33_SIGCONTEXT_D0 0
+#define AM33_SIGCONTEXT_D1 4
+#define AM33_SIGCONTEXT_D2 8
+#define AM33_SIGCONTEXT_D3 12
+#define AM33_SIGCONTEXT_A0 16
+#define AM33_SIGCONTEXT_A1 20
+#define AM33_SIGCONTEXT_A2 24
+#define AM33_SIGCONTEXT_A3 28
+#define AM33_SIGCONTEXT_E0 32
+#define AM33_SIGCONTEXT_E1 36
+#define AM33_SIGCONTEXT_E2 40
+#define AM33_SIGCONTEXT_E3 44
+#define AM33_SIGCONTEXT_E4 48
+#define AM33_SIGCONTEXT_E5 52
+#define AM33_SIGCONTEXT_E6 56
+#define AM33_SIGCONTEXT_E7 60
+#define AM33_SIGCONTEXT_LAR 64
+#define AM33_SIGCONTEXT_LIR 68
+#define AM33_SIGCONTEXT_MDR 72
+#define AM33_SIGCONTEXT_MCVF 76
+#define AM33_SIGCONTEXT_MCRL 80
+#define AM33_SIGCONTEXT_MCRH 84
+#define AM33_SIGCONTEXT_MDRQ 88
+#define AM33_SIGCONTEXT_SP 92
+#define AM33_SIGCONTEXT_EPSW 96
+#define AM33_SIGCONTEXT_PC 100
+#define AM33_SIGCONTEXT_FPUCONTEXT 104
-/* Fetch, and possibly build, an appropriate link_map_offsets structure
- for mn10300 linux targets using the struct offsets defined in <link.h>.
- Note, however, that link.h is not actually referred to in this file.
- Instead, the relevant structs offsets were obtained from examining
- link.h. (We can't refer to link.h from this file because the host
- system won't necessarily have it, or if it does, the structs which
- it defines will refer to the host system, not the target.) */
-struct link_map_offsets *
-mn10300_linux_svr4_fetch_link_map_offsets (void)
+static void
+am33_linux_sigframe_cache_init (const struct tramp_frame *self,
+ struct frame_info *this_frame,
+ struct trad_frame_cache *this_cache,
+ CORE_ADDR func)
{
- static struct link_map_offsets lmo;
- static struct link_map_offsets *lmp = 0;
+ CORE_ADDR sc_base, fpubase;
+ int i;
- if (lmp == 0)
+ sc_base = get_frame_register_unsigned (this_frame, E_SP_REGNUM);
+ if (self == &am33_linux_sigframe)
{
- lmp = &lmo;
-
- lmo.r_debug_size = 8; /* Actual size is 20, but this is all we
- need. */
-
- lmo.r_map_offset = 4;
- lmo.r_map_size = 4;
-
- lmo.link_map_size = 20; /* Might be larger, but this is all we
- need. */
-
- lmo.l_addr_offset = 0;
- lmo.l_addr_size = 4;
-
- lmo.l_name_offset = 4;
- lmo.l_name_size = 4;
-
- lmo.l_next_offset = 12;
- lmo.l_next_size = 4;
+ sc_base += 8;
+ sc_base = get_frame_memory_unsigned (this_frame, sc_base, 4);
+ }
+ else
+ {
+ sc_base += 12;
+ sc_base = get_frame_memory_unsigned (this_frame, sc_base, 4);
+ sc_base += 20;
+ }
- lmo.l_prev_offset = 16;
- lmo.l_prev_size = 4;
+ trad_frame_set_reg_addr (this_cache, E_D0_REGNUM,
+ sc_base + AM33_SIGCONTEXT_D0);
+ trad_frame_set_reg_addr (this_cache, E_D1_REGNUM,
+ sc_base + AM33_SIGCONTEXT_D1);
+ trad_frame_set_reg_addr (this_cache, E_D2_REGNUM,
+ sc_base + AM33_SIGCONTEXT_D2);
+ trad_frame_set_reg_addr (this_cache, E_D3_REGNUM,
+ sc_base + AM33_SIGCONTEXT_D3);
+
+ trad_frame_set_reg_addr (this_cache, E_A0_REGNUM,
+ sc_base + AM33_SIGCONTEXT_A0);
+ trad_frame_set_reg_addr (this_cache, E_A1_REGNUM,
+ sc_base + AM33_SIGCONTEXT_A1);
+ trad_frame_set_reg_addr (this_cache, E_A2_REGNUM,
+ sc_base + AM33_SIGCONTEXT_A2);
+ trad_frame_set_reg_addr (this_cache, E_A3_REGNUM,
+ sc_base + AM33_SIGCONTEXT_A3);
+
+ trad_frame_set_reg_addr (this_cache, E_E0_REGNUM,
+ sc_base + AM33_SIGCONTEXT_E0);
+ trad_frame_set_reg_addr (this_cache, E_E1_REGNUM,
+ sc_base + AM33_SIGCONTEXT_E1);
+ trad_frame_set_reg_addr (this_cache, E_E2_REGNUM,
+ sc_base + AM33_SIGCONTEXT_E2);
+ trad_frame_set_reg_addr (this_cache, E_E3_REGNUM,
+ sc_base + AM33_SIGCONTEXT_E3);
+ trad_frame_set_reg_addr (this_cache, E_E4_REGNUM,
+ sc_base + AM33_SIGCONTEXT_E4);
+ trad_frame_set_reg_addr (this_cache, E_E5_REGNUM,
+ sc_base + AM33_SIGCONTEXT_E5);
+ trad_frame_set_reg_addr (this_cache, E_E6_REGNUM,
+ sc_base + AM33_SIGCONTEXT_E6);
+ trad_frame_set_reg_addr (this_cache, E_E7_REGNUM,
+ sc_base + AM33_SIGCONTEXT_E7);
+
+ trad_frame_set_reg_addr (this_cache, E_LAR_REGNUM,
+ sc_base + AM33_SIGCONTEXT_LAR);
+ trad_frame_set_reg_addr (this_cache, E_LIR_REGNUM,
+ sc_base + AM33_SIGCONTEXT_LIR);
+ trad_frame_set_reg_addr (this_cache, E_MDR_REGNUM,
+ sc_base + AM33_SIGCONTEXT_MDR);
+ trad_frame_set_reg_addr (this_cache, E_MCVF_REGNUM,
+ sc_base + AM33_SIGCONTEXT_MCVF);
+ trad_frame_set_reg_addr (this_cache, E_MCRL_REGNUM,
+ sc_base + AM33_SIGCONTEXT_MCRL);
+ trad_frame_set_reg_addr (this_cache, E_MDRQ_REGNUM,
+ sc_base + AM33_SIGCONTEXT_MDRQ);
+
+ trad_frame_set_reg_addr (this_cache, E_SP_REGNUM,
+ sc_base + AM33_SIGCONTEXT_SP);
+ trad_frame_set_reg_addr (this_cache, E_PSW_REGNUM,
+ sc_base + AM33_SIGCONTEXT_EPSW);
+ trad_frame_set_reg_addr (this_cache, E_PC_REGNUM,
+ sc_base + AM33_SIGCONTEXT_PC);
+
+ fpubase = get_frame_memory_unsigned (this_frame,
+ sc_base + AM33_SIGCONTEXT_FPUCONTEXT,
+ 4);
+ if (fpubase)
+ {
+ for (i = 0; i < 32; i++)
+ {
+ trad_frame_set_reg_addr (this_cache, E_FS0_REGNUM + i,
+ fpubase + 4 * i);
+ }
+ trad_frame_set_reg_addr (this_cache, E_FPCR_REGNUM, fpubase + 4 * 32);
}
- return lmp;
+ trad_frame_set_id (this_cache, frame_id_build (sc_base, func));
}
-
-/* AM33 Linux osabi has been recognized.
+\f
+/* AM33 GNU/Linux osabi has been recognized.
Now's our chance to register our corefile handling. */
static void
-am33_linux_init_osabi (struct gdbarch_info gdbinfo, struct gdbarch *gdbarch)
+am33_linux_init_osabi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
- set_gdbarch_regset_from_core_section (gdbarch,
- am33_regset_from_core_section);
+ linux_init_abi (info, gdbarch);
+
+ set_gdbarch_iterate_over_regset_sections
+ (gdbarch, am33_iterate_over_regset_sections);
set_solib_svr4_fetch_link_map_offsets
- (gdbarch, mn10300_linux_svr4_fetch_link_map_offsets);
+ (gdbarch, svr4_ilp32_fetch_link_map_offsets);
+
+ tramp_frame_prepend_unwinder (gdbarch, &am33_linux_sigframe);
+ tramp_frame_prepend_unwinder (gdbarch, &am33_linux_rt_sigframe);
}
+/* Provide a prototype to silence -Wmissing-prototypes. */
+extern initialize_file_ftype _initialize_mn10300_linux_tdep;
+
void
_initialize_mn10300_linux_tdep (void)
{
projects / platform / upstream / binutils.git / blobdiff