1 /* Target-dependent code for the Motorola 68000 series.
3 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2000,
4 2001, 2003, 2004 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
28 /* Register numbers of various important registers. */
36 M68K_FP_REGNUM = 14, /* Address of executing stack frame. */
37 M68K_SP_REGNUM = 15, /* Address of top of stack. */
38 M68K_PS_REGNUM = 16, /* Processor status. */
39 M68K_PC_REGNUM = 17, /* Program counter. */
40 M68K_FP0_REGNUM = 18, /* Floating point register 0. */
41 M68K_FPC_REGNUM = 26, /* 68881 control register. */
42 M68K_FPS_REGNUM = 27, /* 68881 status register. */
46 /* Number of machine registers. */
47 #define M68K_NUM_REGS (M68K_FPI_REGNUM + 1)
49 /* Size of the largest register. */
50 #define M68K_MAX_REGISTER_SIZE 12
52 /* Convention for returning structures. */
56 pcc_struct_return, /* Return "short" structures in memory. */
57 reg_struct_return /* Return "short" structures in registers. */
60 /* Target-dependent structure in gdbarch. */
64 /* Offset to PC value in the jump buffer. If this is negative,
65 longjmp support will be disabled. */
67 /* The size of each entry in the jump buffer. */
70 /* Register in which the address to store a structure value is
71 passed to a function. */
72 int struct_value_regnum;
74 /* Convention for returning structures. */
75 enum struct_return struct_return;
78 /* Initialize a SVR4 architecture variant. */
79 extern void m68k_svr4_init_abi (struct gdbarch_info, struct gdbarch *);
82 /* Functions exported from m68kbsd-tdep.c. */
84 extern int m68kbsd_fpreg_offset (int regnum);
86 #endif /* m68k-tdep.h */