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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-6.8/] [gdb/] [i386fbsd-tdep.c] - Diff between revs 827 and 840

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/* Target-dependent code for FreeBSD/i386.
/* Target-dependent code for FreeBSD/i386.
 
 
   Copyright (C) 2003, 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
   Copyright (C) 2003, 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
 
 
   This file is part of GDB.
   This file is part of GDB.
 
 
   This program is free software; you can redistribute it and/or modify
   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
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.
   (at your option) any later version.
 
 
   This program is distributed in the hope that it will be useful,
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   GNU General Public License for more details.
 
 
   You should have received a copy of the GNU General Public License
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 
#include "defs.h"
#include "defs.h"
#include "arch-utils.h"
#include "arch-utils.h"
#include "gdbcore.h"
#include "gdbcore.h"
#include "osabi.h"
#include "osabi.h"
#include "regcache.h"
#include "regcache.h"
 
 
#include "gdb_assert.h"
#include "gdb_assert.h"
 
 
#include "i386-tdep.h"
#include "i386-tdep.h"
#include "i387-tdep.h"
#include "i387-tdep.h"
#include "bsd-uthread.h"
#include "bsd-uthread.h"
#include "solib-svr4.h"
#include "solib-svr4.h"
 
 
/* FreeBSD 3.0-RELEASE or later.  */
/* FreeBSD 3.0-RELEASE or later.  */
 
 
/* From <machine/reg.h>.  */
/* From <machine/reg.h>.  */
static int i386fbsd_r_reg_offset[] =
static int i386fbsd_r_reg_offset[] =
{
{
  9 * 4, 8 * 4, 7 * 4, 6 * 4,   /* %eax, %ecx, %edx, %ebx */
  9 * 4, 8 * 4, 7 * 4, 6 * 4,   /* %eax, %ecx, %edx, %ebx */
  15 * 4, 4 * 4,                /* %esp, %ebp */
  15 * 4, 4 * 4,                /* %esp, %ebp */
  3 * 4, 2 * 4,                 /* %esi, %edi */
  3 * 4, 2 * 4,                 /* %esi, %edi */
  12 * 4, 14 * 4,               /* %eip, %eflags */
  12 * 4, 14 * 4,               /* %eip, %eflags */
  13 * 4, 16 * 4,               /* %cs, %ss */
  13 * 4, 16 * 4,               /* %cs, %ss */
  1 * 4, 0 * 4, -1, -1           /* %ds, %es, %fs, %gs */
  1 * 4, 0 * 4, -1, -1           /* %ds, %es, %fs, %gs */
};
};
 
 
/* Sigtramp routine location.  */
/* Sigtramp routine location.  */
CORE_ADDR i386fbsd_sigtramp_start_addr = 0xbfbfdf20;
CORE_ADDR i386fbsd_sigtramp_start_addr = 0xbfbfdf20;
CORE_ADDR i386fbsd_sigtramp_end_addr = 0xbfbfdff0;
CORE_ADDR i386fbsd_sigtramp_end_addr = 0xbfbfdff0;
 
 
/* From <machine/signal.h>.  */
/* From <machine/signal.h>.  */
int i386fbsd_sc_reg_offset[] =
int i386fbsd_sc_reg_offset[] =
{
{
  8 + 14 * 4,                   /* %eax */
  8 + 14 * 4,                   /* %eax */
  8 + 13 * 4,                   /* %ecx */
  8 + 13 * 4,                   /* %ecx */
  8 + 12 * 4,                   /* %edx */
  8 + 12 * 4,                   /* %edx */
  8 + 11 * 4,                   /* %ebx */
  8 + 11 * 4,                   /* %ebx */
  8 + 0 * 4,                    /* %esp */
  8 + 0 * 4,                    /* %esp */
  8 + 1 * 4,                    /* %ebp */
  8 + 1 * 4,                    /* %ebp */
  8 + 10 * 4,                   /* %esi */
  8 + 10 * 4,                   /* %esi */
  8 + 9 * 4,                    /* %edi */
  8 + 9 * 4,                    /* %edi */
  8 + 3 * 4,                    /* %eip */
  8 + 3 * 4,                    /* %eip */
  8 + 4 * 4,                    /* %eflags */
  8 + 4 * 4,                    /* %eflags */
  8 + 7 * 4,                    /* %cs */
  8 + 7 * 4,                    /* %cs */
  8 + 8 * 4,                    /* %ss */
  8 + 8 * 4,                    /* %ss */
  8 + 6 * 4,                    /* %ds */
  8 + 6 * 4,                    /* %ds */
  8 + 5 * 4,                    /* %es */
  8 + 5 * 4,                    /* %es */
  8 + 15 * 4,                   /* %fs */
  8 + 15 * 4,                   /* %fs */
  8 + 16 * 4                    /* %gs */
  8 + 16 * 4                    /* %gs */
};
};
 
 
/* From /usr/src/lib/libc/i386/gen/_setjmp.S.  */
/* From /usr/src/lib/libc/i386/gen/_setjmp.S.  */
static int i386fbsd_jmp_buf_reg_offset[] =
static int i386fbsd_jmp_buf_reg_offset[] =
{
{
  -1,                           /* %eax */
  -1,                           /* %eax */
  -1,                           /* %ecx */
  -1,                           /* %ecx */
  -1,                           /* %edx */
  -1,                           /* %edx */
  1 * 4,                        /* %ebx */
  1 * 4,                        /* %ebx */
  2 * 4,                        /* %esp */
  2 * 4,                        /* %esp */
  3 * 4,                        /* %ebp */
  3 * 4,                        /* %ebp */
  4 * 4,                        /* %esi */
  4 * 4,                        /* %esi */
  5 * 4,                        /* %edi */
  5 * 4,                        /* %edi */
  0 * 4                          /* %eip */
  0 * 4                          /* %eip */
};
};
 
 
static void
static void
i386fbsd_supply_uthread (struct regcache *regcache,
i386fbsd_supply_uthread (struct regcache *regcache,
                         int regnum, CORE_ADDR addr)
                         int regnum, CORE_ADDR addr)
{
{
  char buf[4];
  char buf[4];
  int i;
  int i;
 
 
  gdb_assert (regnum >= -1);
  gdb_assert (regnum >= -1);
 
 
  for (i = 0; i < ARRAY_SIZE (i386fbsd_jmp_buf_reg_offset); i++)
  for (i = 0; i < ARRAY_SIZE (i386fbsd_jmp_buf_reg_offset); i++)
    {
    {
      if (i386fbsd_jmp_buf_reg_offset[i] != -1
      if (i386fbsd_jmp_buf_reg_offset[i] != -1
          && (regnum == -1 || regnum == i))
          && (regnum == -1 || regnum == i))
        {
        {
          read_memory (addr + i386fbsd_jmp_buf_reg_offset[i], buf, 4);
          read_memory (addr + i386fbsd_jmp_buf_reg_offset[i], buf, 4);
          regcache_raw_supply (regcache, i, buf);
          regcache_raw_supply (regcache, i, buf);
        }
        }
    }
    }
}
}
 
 
static void
static void
i386fbsd_collect_uthread (const struct regcache *regcache,
i386fbsd_collect_uthread (const struct regcache *regcache,
                          int regnum, CORE_ADDR addr)
                          int regnum, CORE_ADDR addr)
{
{
  char buf[4];
  char buf[4];
  int i;
  int i;
 
 
  gdb_assert (regnum >= -1);
  gdb_assert (regnum >= -1);
 
 
  for (i = 0; i < ARRAY_SIZE (i386fbsd_jmp_buf_reg_offset); i++)
  for (i = 0; i < ARRAY_SIZE (i386fbsd_jmp_buf_reg_offset); i++)
    {
    {
      if (i386fbsd_jmp_buf_reg_offset[i] != -1
      if (i386fbsd_jmp_buf_reg_offset[i] != -1
          && (regnum == -1 || regnum == i))
          && (regnum == -1 || regnum == i))
        {
        {
          regcache_raw_collect (regcache, i, buf);
          regcache_raw_collect (regcache, i, buf);
          write_memory (addr + i386fbsd_jmp_buf_reg_offset[i], buf, 4);
          write_memory (addr + i386fbsd_jmp_buf_reg_offset[i], buf, 4);
        }
        }
    }
    }
}
}
 
 
static void
static void
i386fbsdaout_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
i386fbsdaout_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
{
  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
 
 
  /* Obviously FreeBSD is BSD-based.  */
  /* Obviously FreeBSD is BSD-based.  */
  i386bsd_init_abi (info, gdbarch);
  i386bsd_init_abi (info, gdbarch);
 
 
  /* FreeBSD has a different `struct reg', and reserves some space for
  /* FreeBSD has a different `struct reg', and reserves some space for
     its FPU emulator in `struct fpreg'.  */
     its FPU emulator in `struct fpreg'.  */
  tdep->gregset_reg_offset = i386fbsd_r_reg_offset;
  tdep->gregset_reg_offset = i386fbsd_r_reg_offset;
  tdep->gregset_num_regs = ARRAY_SIZE (i386fbsd_r_reg_offset);
  tdep->gregset_num_regs = ARRAY_SIZE (i386fbsd_r_reg_offset);
  tdep->sizeof_gregset = 18 * 4;
  tdep->sizeof_gregset = 18 * 4;
  tdep->sizeof_fpregset = 176;
  tdep->sizeof_fpregset = 176;
 
 
  /* FreeBSD uses -freg-struct-return by default.  */
  /* FreeBSD uses -freg-struct-return by default.  */
  tdep->struct_return = reg_struct_return;
  tdep->struct_return = reg_struct_return;
 
 
  /* FreeBSD uses a different memory layout.  */
  /* FreeBSD uses a different memory layout.  */
  tdep->sigtramp_start = i386fbsd_sigtramp_start_addr;
  tdep->sigtramp_start = i386fbsd_sigtramp_start_addr;
  tdep->sigtramp_end = i386fbsd_sigtramp_end_addr;
  tdep->sigtramp_end = i386fbsd_sigtramp_end_addr;
 
 
  /* FreeBSD has a more complete `struct sigcontext'.  */
  /* FreeBSD has a more complete `struct sigcontext'.  */
  tdep->sc_reg_offset = i386fbsd_sc_reg_offset;
  tdep->sc_reg_offset = i386fbsd_sc_reg_offset;
  tdep->sc_num_regs = ARRAY_SIZE (i386fbsd_sc_reg_offset);
  tdep->sc_num_regs = ARRAY_SIZE (i386fbsd_sc_reg_offset);
 
 
  /* FreeBSD provides a user-level threads implementation.  */
  /* FreeBSD provides a user-level threads implementation.  */
  bsd_uthread_set_supply_uthread (gdbarch, i386fbsd_supply_uthread);
  bsd_uthread_set_supply_uthread (gdbarch, i386fbsd_supply_uthread);
  bsd_uthread_set_collect_uthread (gdbarch, i386fbsd_collect_uthread);
  bsd_uthread_set_collect_uthread (gdbarch, i386fbsd_collect_uthread);
}
}
 
 
static void
static void
i386fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
i386fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
{
  /* It's almost identical to FreeBSD a.out.  */
  /* It's almost identical to FreeBSD a.out.  */
  i386fbsdaout_init_abi (info, gdbarch);
  i386fbsdaout_init_abi (info, gdbarch);
 
 
  /* Except that it uses ELF.  */
  /* Except that it uses ELF.  */
  i386_elf_init_abi (info, gdbarch);
  i386_elf_init_abi (info, gdbarch);
 
 
  /* FreeBSD ELF uses SVR4-style shared libraries.  */
  /* FreeBSD ELF uses SVR4-style shared libraries.  */
  set_solib_svr4_fetch_link_map_offsets
  set_solib_svr4_fetch_link_map_offsets
    (gdbarch, svr4_ilp32_fetch_link_map_offsets);
    (gdbarch, svr4_ilp32_fetch_link_map_offsets);
}
}
 
 
/* FreeBSD 4.0-RELEASE or later.  */
/* FreeBSD 4.0-RELEASE or later.  */
 
 
/* From <machine/reg.h>.  */
/* From <machine/reg.h>.  */
static int i386fbsd4_r_reg_offset[] =
static int i386fbsd4_r_reg_offset[] =
{
{
  10 * 4, 9 * 4, 8 * 4, 7 * 4,  /* %eax, %ecx, %edx, %ebx */
  10 * 4, 9 * 4, 8 * 4, 7 * 4,  /* %eax, %ecx, %edx, %ebx */
  16 * 4, 5 * 4,                /* %esp, %ebp */
  16 * 4, 5 * 4,                /* %esp, %ebp */
  4 * 4, 3 * 4,                 /* %esi, %edi */
  4 * 4, 3 * 4,                 /* %esi, %edi */
  13 * 4, 15 * 4,               /* %eip, %eflags */
  13 * 4, 15 * 4,               /* %eip, %eflags */
  14 * 4, 17 * 4,               /* %cs, %ss */
  14 * 4, 17 * 4,               /* %cs, %ss */
  2 * 4, 1 * 4, 0 * 4, 18 * 4    /* %ds, %es, %fs, %gs */
  2 * 4, 1 * 4, 0 * 4, 18 * 4    /* %ds, %es, %fs, %gs */
};
};
 
 
/* From <machine/signal.h>.  */
/* From <machine/signal.h>.  */
int i386fbsd4_sc_reg_offset[] =
int i386fbsd4_sc_reg_offset[] =
{
{
  20 + 11 * 4,                  /* %eax */
  20 + 11 * 4,                  /* %eax */
  20 + 10 * 4,                  /* %ecx */
  20 + 10 * 4,                  /* %ecx */
  20 + 9 * 4,                   /* %edx */
  20 + 9 * 4,                   /* %edx */
  20 + 8 * 4,                   /* %ebx */
  20 + 8 * 4,                   /* %ebx */
  20 + 17 * 4,                  /* %esp */
  20 + 17 * 4,                  /* %esp */
  20 + 6 * 4,                   /* %ebp */
  20 + 6 * 4,                   /* %ebp */
  20 + 5 * 4,                   /* %esi */
  20 + 5 * 4,                   /* %esi */
  20 + 4 * 4,                   /* %edi */
  20 + 4 * 4,                   /* %edi */
  20 + 14 * 4,                  /* %eip */
  20 + 14 * 4,                  /* %eip */
  20 + 16 * 4,                  /* %eflags */
  20 + 16 * 4,                  /* %eflags */
  20 + 15 * 4,                  /* %cs */
  20 + 15 * 4,                  /* %cs */
  20 + 18 * 4,                  /* %ss */
  20 + 18 * 4,                  /* %ss */
  20 + 3 * 4,                   /* %ds */
  20 + 3 * 4,                   /* %ds */
  20 + 2 * 4,                   /* %es */
  20 + 2 * 4,                   /* %es */
  20 + 1 * 4,                   /* %fs */
  20 + 1 * 4,                   /* %fs */
  20 + 0 * 4                     /* %gs */
  20 + 0 * 4                     /* %gs */
};
};
 
 
static void
static void
i386fbsd4_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
i386fbsd4_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
{
  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
 
 
  /* Inherit stuff from older releases.  We assume that FreeBSD
  /* Inherit stuff from older releases.  We assume that FreeBSD
     4.0-RELEASE always uses ELF.  */
     4.0-RELEASE always uses ELF.  */
  i386fbsd_init_abi (info, gdbarch);
  i386fbsd_init_abi (info, gdbarch);
 
 
  /* FreeBSD 4.0 introduced a new `struct reg'.  */
  /* FreeBSD 4.0 introduced a new `struct reg'.  */
  tdep->gregset_reg_offset = i386fbsd4_r_reg_offset;
  tdep->gregset_reg_offset = i386fbsd4_r_reg_offset;
  tdep->gregset_num_regs = ARRAY_SIZE (i386fbsd4_r_reg_offset);
  tdep->gregset_num_regs = ARRAY_SIZE (i386fbsd4_r_reg_offset);
  tdep->sizeof_gregset = 19 * 4;
  tdep->sizeof_gregset = 19 * 4;
 
 
  /* FreeBSD 4.0 introduced a new `struct sigcontext'.  */
  /* FreeBSD 4.0 introduced a new `struct sigcontext'.  */
  tdep->sc_reg_offset = i386fbsd4_sc_reg_offset;
  tdep->sc_reg_offset = i386fbsd4_sc_reg_offset;
  tdep->sc_num_regs = ARRAY_SIZE (i386fbsd4_sc_reg_offset);
  tdep->sc_num_regs = ARRAY_SIZE (i386fbsd4_sc_reg_offset);
}
}
 
 


/* Provide a prototype to silence -Wmissing-prototypes.  */
/* Provide a prototype to silence -Wmissing-prototypes.  */
void _initialize_i386fbsd_tdep (void);
void _initialize_i386fbsd_tdep (void);
 
 
void
void
_initialize_i386fbsd_tdep (void)
_initialize_i386fbsd_tdep (void)
{
{
  gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_FREEBSD_AOUT,
  gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_FREEBSD_AOUT,
                          i386fbsdaout_init_abi);
                          i386fbsdaout_init_abi);
  gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_FREEBSD_ELF,
  gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_FREEBSD_ELF,
                          i386fbsd4_init_abi);
                          i386fbsd4_init_abi);
}
}
 
 

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