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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [gdb/] [m68k-tdep.h] - Blame information for rev 157

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1 24 jeremybenn
/* Target-dependent code for the Motorola 68000 series.
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   Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2000, 2001,
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   2003, 2004, 2007, 2008 Free Software Foundation, Inc.
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   This file is part of GDB.
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   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 3 of the License, or
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   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
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   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
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#ifndef M68K_TDEP_H
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#define M68K_TDEP_H
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struct frame_info;
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/* Register numbers of various important registers.  */
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enum m68k_regnum
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{
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  M68K_D0_REGNUM = 0,
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  M68K_D1_REGNUM = 1,
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  M68K_D2_REGNUM = 2,
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  M68K_D7_REGNUM = 7,
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  M68K_A0_REGNUM = 8,
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  M68K_A1_REGNUM = 9,
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  M68K_A2_REGNUM = 10,
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  M68K_FP_REGNUM = 14,          /* Address of executing stack frame.  */
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  M68K_SP_REGNUM = 15,          /* Address of top of stack.  */
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  M68K_PS_REGNUM = 16,          /* Processor status.  */
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  M68K_PC_REGNUM = 17,          /* Program counter.  */
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  M68K_FP0_REGNUM = 18,         /* Floating point register 0.  */
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  M68K_FPC_REGNUM = 26,         /* 68881 control register.  */
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  M68K_FPS_REGNUM = 27,         /* 68881 status register.  */
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  M68K_FPI_REGNUM = 28
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};
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/* Number of machine registers.  */
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#define M68K_NUM_REGS   (M68K_FPI_REGNUM + 1)
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/* Size of the largest register.  */
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#define M68K_MAX_REGISTER_SIZE  12
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/* Convention for returning structures.  */
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enum struct_return
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{
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  pcc_struct_return,            /* Return "short" structures in memory.  */
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  reg_struct_return             /* Return "short" structures in registers.  */
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};
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/* Particular flavour of m68k.  */
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enum m68k_flavour
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  {
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    m68k_no_flavour,
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    m68k_coldfire_flavour,
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    m68k_fido_flavour
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  };
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/* Target-dependent structure in gdbarch.  */
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struct gdbarch_tdep
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{
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  /* Offset to PC value in the jump buffer.  If this is negative,
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     longjmp support will be disabled.  */
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  int jb_pc;
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  /* The size of each entry in the jump buffer.  */
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  size_t jb_elt_size;
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  /* Register in which the address to store a structure value is
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     passed to a function.  */
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  int struct_value_regnum;
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  /* Convention for returning structures.  */
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  enum struct_return struct_return;
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  /* Convention for returning floats.  zero in int regs, non-zero in float.  */
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  int float_return;
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  /* The particular flavour of m68k.  */
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  enum m68k_flavour flavour;
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  /* Flag set if the floating point registers are present, or assumed
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     to be present.  */
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  int fpregs_present;
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};
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/* Initialize a SVR4 architecture variant.  */
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extern void m68k_svr4_init_abi (struct gdbarch_info, struct gdbarch *);
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/* Functions exported from m68kbsd-tdep.c.  */
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extern int m68kbsd_fpreg_offset (int regnum);
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#endif /* m68k-tdep.h */

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