#include "defs.h"
#include "gdbcore.h"
#include "frame.h"
#include "regcache.h"
#include "value.h"
#include "osabi.h"
#include "gdb_string.h"
#include "alpha-tdep.h"
#include "alphabsd-tdep.h"
#include "nbsd-tdep.h"
#include "solib-svr4.h"
static void
fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which,
CORE_ADDR ignore)
{
char *regs, *fpregs;
int regno;
static const int regmap[] =
{
0, 1, 2, 3,
4, 5, 6, 7,
8, 9, 10, 11,
12, 13, 14, 15,
30, 31, 32, 16,
17, 18, 19, 20,
21, 22, 23, 24,
25, 29, 26
};
#define SIZEOF_TRAPFRAME (33 * 8)
if (which != 0)
return;
regs = core_reg_sect;
fpregs = core_reg_sect + SIZEOF_TRAPFRAME;
if (core_reg_size < (SIZEOF_TRAPFRAME + SIZEOF_STRUCT_FPREG))
{
warning (_("Wrong size register set in core file."));
return;
}
for (regno = 0; regno < ALPHA_ZERO_REGNUM; regno++)
regcache_raw_supply (current_regcache, regno, regs + (regmap[regno] * 8));
regcache_raw_supply (current_regcache, ALPHA_ZERO_REGNUM, NULL);
regcache_raw_supply (current_regcache, PC_REGNUM, regs + (28 * 8));
alphabsd_supply_fpreg (fpregs, -1);
}
static void
fetch_elfcore_registers (char *core_reg_sect, unsigned core_reg_size, int which,
CORE_ADDR ignore)
{
switch (which)
{
case 0:
if (core_reg_size != SIZEOF_STRUCT_REG)
warning (_("Wrong size register set in core file."));
else
alphabsd_supply_reg (core_reg_sect, -1);
break;
case 2:
if (core_reg_size != SIZEOF_STRUCT_FPREG)
warning (_("Wrong size FP register set in core file."));
else
alphabsd_supply_fpreg (core_reg_sect, -1);
break;
default:
break;
}
}
static struct core_fns alphanbsd_core_fns =
{
bfd_target_unknown_flavour,
default_check_format,
default_core_sniffer,
fetch_core_registers,
NULL
};
static struct core_fns alphanbsd_elfcore_fns =
{
bfd_target_elf_flavour,
default_check_format,
default_core_sniffer,
fetch_elfcore_registers,
NULL
};
static const unsigned char sigtramp_retcode[] =
{
0x00, 0x00, 0x1e, 0xa6,
0x10, 0x00, 0xde, 0x23,
0x27, 0x01, 0x1f, 0x20,
0x83, 0x00, 0x00, 0x00,
};
#define RETCODE_NWORDS 4
#define RETCODE_SIZE (RETCODE_NWORDS * 4)
LONGEST
alphanbsd_sigtramp_offset (CORE_ADDR pc)
{
unsigned char ret[RETCODE_SIZE], w[4];
LONGEST off;
int i;
if (deprecated_read_memory_nobpt (pc, (char *) w, 4) != 0)
return -1;
for (i = 0; i < RETCODE_NWORDS; i++)
{
if (memcmp (w, sigtramp_retcode + (i * 4), 4) == 0)
break;
}
if (i == RETCODE_NWORDS)
return (-1);
off = i * 4;
pc -= off;
if (deprecated_read_memory_nobpt (pc, (char *) ret, sizeof (ret)) != 0)
return -1;
if (memcmp (ret, sigtramp_retcode, RETCODE_SIZE) == 0)
return off;
return -1;
}
static int
alphanbsd_pc_in_sigtramp (CORE_ADDR pc, char *func_name)
{
return (nbsd_pc_in_sigtramp (pc, func_name)
|| alphanbsd_sigtramp_offset (pc) >= 0);
}
static CORE_ADDR
alphanbsd_sigcontext_addr (struct frame_info *frame)
{
return get_frame_base (frame);
}
static void
alphanbsd_init_abi (struct gdbarch_info info,
struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
alpha_dwarf2_init_abi (info, gdbarch);
alpha_mdebug_init_abi (info, gdbarch);
set_gdbarch_software_single_step (gdbarch, alpha_software_single_step);
set_solib_svr4_fetch_link_map_offsets (gdbarch,
nbsd_lp64_solib_svr4_fetch_link_map_offsets);
tdep->dynamic_sigtramp_offset = alphanbsd_sigtramp_offset;
tdep->pc_in_sigtramp = alphanbsd_pc_in_sigtramp;
tdep->sigcontext_addr = alphanbsd_sigcontext_addr;
tdep->jb_pc = 2;
tdep->jb_elt_size = 8;
}
void
_initialize_alphanbsd_tdep (void)
{
gdbarch_register_osabi (bfd_arch_alpha, 0, GDB_OSABI_NETBSD_ELF,
alphanbsd_init_abi);
gdbarch_register_osabi (bfd_arch_alpha, 0, GDB_OSABI_OPENBSD_ELF,
alphanbsd_init_abi);
deprecated_add_core_fns (&alphanbsd_core_fns);
deprecated_add_core_fns (&alphanbsd_elfcore_fns);
}