/* Target-dependent code for NetBSD/mips.
- Copyright (C) 2002, 2003, 2004, 2006, 2007 Free Software Foundation, Inc.
+ Copyright (C) 2002-2015 Free Software Foundation, Inc.
Contributed by Wasabi Systems, Inc.
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 "value.h"
#include "osabi.h"
-#include "gdb_assert.h"
-#include "gdb_string.h"
-
#include "nbsd-tdep.h"
#include "mipsnbsd-tdep.h"
#include "mips-tdep.h"
/* NetBSD/mips register sets. */
-static struct regset mipsnbsd_gregset =
+static const struct regset mipsnbsd_gregset =
{
NULL,
- mipsnbsd_supply_gregset
+ mipsnbsd_supply_gregset,
+ NULL,
+ REGSET_VARIABLE_SIZE
};
-static struct regset mipsnbsd_fpregset =
+static const struct regset mipsnbsd_fpregset =
{
NULL,
mipsnbsd_supply_fpregset
};
-/* Return the appropriate register set for the core section identified
- by SECT_NAME and SECT_SIZE. */
+/* Iterate over core file register note sections. */
-static const struct regset *
-mipsnbsd_regset_from_core_section (struct gdbarch *gdbarch,
- const char *sect_name, size_t sect_size)
+static void
+mipsnbsd_iterate_over_regset_sections (struct gdbarch *gdbarch,
+ iterate_over_regset_sections_cb *cb,
+ void *cb_data,
+ const struct regcache *regcache)
{
size_t regsize = mips_isa_regsize (gdbarch);
-
- if (strcmp (sect_name, ".reg") == 0
- && sect_size >= MIPSNBSD_NUM_GREGS * regsize)
- return &mipsnbsd_gregset;
- if (strcmp (sect_name, ".reg2") == 0
- && sect_size >= MIPSNBSD_NUM_FPREGS * regsize)
- return &mipsnbsd_fpregset;
-
- return NULL;
+ cb (".reg", MIPSNBSD_NUM_GREGS * regsize, &mipsnbsd_gregset,
+ NULL, cb_data);
+ cb (".reg2", MIPSNBSD_NUM_FPREGS * regsize, &mipsnbsd_fpregset,
+ NULL, cb_data);
}
\f
void
mipsnbsd_supply_reg (struct regcache *regcache, const char *regs, int regno)
{
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
int i;
- for (i = 0; i <= PC_REGNUM; i++)
+ for (i = 0; i <= gdbarch_pc_regnum (gdbarch); i++)
{
if (regno == i || regno == -1)
{
- if (gdbarch_cannot_fetch_register (current_gdbarch, i))
+ if (gdbarch_cannot_fetch_register (gdbarch, i))
regcache_raw_supply (regcache, i, NULL);
else
regcache_raw_supply (regcache, i,
- regs + (i * mips_isa_regsize (current_gdbarch)));
+ regs + (i * mips_isa_regsize (gdbarch)));
}
}
}
void
mipsnbsd_fill_reg (const struct regcache *regcache, char *regs, int regno)
{
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
int i;
- for (i = 0; i <= PC_REGNUM; i++)
+ for (i = 0; i <= gdbarch_pc_regnum (gdbarch); i++)
if ((regno == i || regno == -1)
- && ! gdbarch_cannot_store_register (current_gdbarch, i))
+ && ! gdbarch_cannot_store_register (gdbarch, i))
regcache_raw_collect (regcache, i,
- regs + (i * mips_isa_regsize (current_gdbarch)));
+ regs + (i * mips_isa_regsize (gdbarch)));
}
void
-mipsnbsd_supply_fpreg (struct regcache *regcache, const char *fpregs, int regno)
+mipsnbsd_supply_fpreg (struct regcache *regcache,
+ const char *fpregs, int regno)
{
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
int i;
- for (i = FP0_REGNUM;
- i <= mips_regnum (current_gdbarch)->fp_implementation_revision;
+ for (i = gdbarch_fp0_regnum (gdbarch);
+ i <= mips_regnum (gdbarch)->fp_implementation_revision;
i++)
{
if (regno == i || regno == -1)
{
- if (gdbarch_cannot_fetch_register (current_gdbarch, i))
+ if (gdbarch_cannot_fetch_register (gdbarch, i))
regcache_raw_supply (regcache, i, NULL);
else
regcache_raw_supply (regcache, i,
- fpregs + ((i - FP0_REGNUM) * mips_isa_regsize (current_gdbarch)));
+ fpregs
+ + ((i - gdbarch_fp0_regnum (gdbarch))
+ * mips_isa_regsize (gdbarch)));
}
}
}
void
mipsnbsd_fill_fpreg (const struct regcache *regcache, char *fpregs, int regno)
{
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
int i;
- for (i = FP0_REGNUM; i <= mips_regnum (current_gdbarch)->fp_control_status;
+ for (i = gdbarch_fp0_regnum (gdbarch);
+ i <= mips_regnum (gdbarch)->fp_control_status;
i++)
if ((regno == i || regno == -1)
- && ! gdbarch_cannot_store_register (current_gdbarch, i))
+ && ! gdbarch_cannot_store_register (gdbarch, i))
regcache_raw_collect (regcache, i,
- fpregs + ((i - FP0_REGNUM) * mips_isa_regsize (current_gdbarch)));
+ fpregs + ((i - gdbarch_fp0_regnum (gdbarch))
+ * mips_isa_regsize (gdbarch)));
}
+#if 0
+
/* Under NetBSD/mips, signal handler invocations can be identified by the
designated code sequence that is used to return from a signal handler.
In particular, the return address of a signal handler points to the
0x00, 0x00, 0x00, 0x0c, /* syscall */
};
-static LONGEST
-mipsnbsd_sigtramp_offset (struct frame_info *next_frame)
-{
- CORE_ADDR pc = frame_pc_unwind (next_frame);
- const char *retcode = gdbarch_byte_order (current_gdbarch)
- == BFD_ENDIAN_BIG ? sigtramp_retcode_mipseb :
- sigtramp_retcode_mipsel;
- unsigned char ret[RETCODE_SIZE], w[4];
- LONGEST off;
- int i;
-
- if (!safe_frame_unwind_memory (next_frame, pc, w, sizeof (w)))
- return -1;
-
- for (i = 0; i < RETCODE_NWORDS; i++)
- {
- if (memcmp (w, retcode + (i * 4), 4) == 0)
- break;
- }
- if (i == RETCODE_NWORDS)
- return -1;
-
- off = i * 4;
- pc -= off;
-
- if (!safe_frame_unwind_memory (next_frame, pc, ret, sizeof (ret)))
- return -1;
-
- if (memcmp (ret, retcode, RETCODE_SIZE) == 0)
- return off;
-
- return -1;
-}
+#endif
/* Figure out where the longjmp will land. We expect that we have
just entered longjmp and haven't yet setup the stack frame, so the
success. */
#define NBSD_MIPS_JB_PC (2 * 4)
-#define NBSD_MIPS_JB_ELEMENT_SIZE mips_isa_regsize (current_gdbarch)
-#define NBSD_MIPS_JB_OFFSET (NBSD_MIPS_JB_PC * \
- NBSD_MIPS_JB_ELEMENT_SIZE)
+#define NBSD_MIPS_JB_ELEMENT_SIZE(gdbarch) mips_isa_regsize (gdbarch)
+#define NBSD_MIPS_JB_OFFSET(gdbarch) (NBSD_MIPS_JB_PC * \
+ NBSD_MIPS_JB_ELEMENT_SIZE (gdbarch))
static int
mipsnbsd_get_longjmp_target (struct frame_info *frame, CORE_ADDR *pc)
{
+ struct gdbarch *gdbarch = get_frame_arch (frame);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
CORE_ADDR jb_addr;
- char *buf;
+ gdb_byte *buf;
- buf = alloca (NBSD_MIPS_JB_ELEMENT_SIZE);
+ buf = alloca (NBSD_MIPS_JB_ELEMENT_SIZE (gdbarch));
jb_addr = get_frame_register_unsigned (frame, MIPS_A0_REGNUM);
- if (target_read_memory (jb_addr + NBSD_MIPS_JB_OFFSET, buf,
- NBSD_MIPS_JB_ELEMENT_SIZE))
+ if (target_read_memory (jb_addr + NBSD_MIPS_JB_OFFSET (gdbarch), buf,
+ NBSD_MIPS_JB_ELEMENT_SIZE (gdbarch)))
return 0;
- *pc = extract_unsigned_integer (buf, NBSD_MIPS_JB_ELEMENT_SIZE);
-
+ *pc = extract_unsigned_integer (buf, NBSD_MIPS_JB_ELEMENT_SIZE (gdbarch),
+ byte_order);
return 1;
}
static int
-mipsnbsd_cannot_fetch_register (int regno)
+mipsnbsd_cannot_fetch_register (struct gdbarch *gdbarch, int regno)
{
return (regno == MIPS_ZERO_REGNUM
- || regno == mips_regnum (current_gdbarch)->fp_implementation_revision);
+ || regno == mips_regnum (gdbarch)->fp_implementation_revision);
}
static int
-mipsnbsd_cannot_store_register (int regno)
+mipsnbsd_cannot_store_register (struct gdbarch *gdbarch, int regno)
{
return (regno == MIPS_ZERO_REGNUM
- || regno == mips_regnum (current_gdbarch)->fp_implementation_revision);
+ || regno == mips_regnum (gdbarch)->fp_implementation_revision);
}
/* Shared library support. */
lmo.r_version_offset = 0;
lmo.r_version_size = 4;
lmo.r_map_offset = 4;
+ lmo.r_brk_offset = 8;
lmo.r_ldsomap_offset = -1;
/* Everything we need is in the first 24 bytes. */
lmo.r_version_offset = 0;
lmo.r_version_size = 4;
lmo.r_map_offset = 8;
+ lmo.r_brk_offset = 16;
lmo.r_ldsomap_offset = -1;
/* Everything we need is in the first 40 bytes. */
mipsnbsd_init_abi (struct gdbarch_info info,
struct gdbarch *gdbarch)
{
- set_gdbarch_regset_from_core_section
- (gdbarch, mipsnbsd_regset_from_core_section);
+ set_gdbarch_iterate_over_regset_sections
+ (gdbarch, mipsnbsd_iterate_over_regset_sections);
set_gdbarch_get_longjmp_target (gdbarch, mipsnbsd_get_longjmp_target);
}
\f
-static enum gdb_osabi
-mipsnbsd_core_osabi_sniffer (bfd *abfd)
-{
- if (strcmp (bfd_get_target (abfd), "netbsd-core") == 0)
- return GDB_OSABI_NETBSD_ELF;
-
- return GDB_OSABI_UNKNOWN;
-}
+/* Provide a prototype to silence -Wmissing-prototypes. */
+extern initialize_file_ftype _initialize_mipsnbsd_tdep;
void
_initialize_mipsnbsd_tdep (void)