1 /* Target-dependent code for the Motorola 68000 series.
3 Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2000, 2001,
4 2003, 2004, 2007, 2008, 2009, 2010 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 3 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, see <http://www.gnu.org/licenses/>. */
26 /* Register numbers of various important registers. */
37 M68K_FP_REGNUM = 14, /* Address of executing stack frame. */
38 M68K_SP_REGNUM = 15, /* Address of top of stack. */
39 M68K_PS_REGNUM = 16, /* Processor status. */
40 M68K_PC_REGNUM = 17, /* Program counter. */
41 M68K_FP0_REGNUM = 18, /* Floating point register 0. */
42 M68K_FPC_REGNUM = 26, /* 68881 control register. */
43 M68K_FPS_REGNUM = 27, /* 68881 status register. */
47 /* Number of machine registers. */
48 #define M68K_NUM_REGS (M68K_FPI_REGNUM + 1)
50 /* Size of the largest register. */
51 #define M68K_MAX_REGISTER_SIZE 12
53 /* Convention for returning structures. */
57 pcc_struct_return, /* Return "short" structures in memory. */
58 reg_struct_return /* Return "short" structures in registers. */
61 /* Particular flavour of m68k. */
65 m68k_coldfire_flavour,
69 /* Target-dependent structure in gdbarch. */
73 /* Offset to PC value in the jump buffer. If this is negative,
74 longjmp support will be disabled. */
76 /* The size of each entry in the jump buffer. */
79 /* Register in which the address to store a structure value is
80 passed to a function. */
81 int struct_value_regnum;
83 /* Convention for returning structures. */
84 enum struct_return struct_return;
86 /* Convention for returning floats. zero in int regs, non-zero in float. */
89 /* The particular flavour of m68k. */
90 enum m68k_flavour flavour;
92 /* Flag set if the floating point registers are present, or assumed
96 /* ISA-specific data types. */
97 struct type *m68k_ps_type;
98 struct type *m68881_ext_type;
101 /* Initialize a SVR4 architecture variant. */
102 extern void m68k_svr4_init_abi (struct gdbarch_info, struct gdbarch *);
105 /* Functions exported from m68kbsd-tdep.c. */
107 extern int m68kbsd_fpreg_offset (struct gdbarch *gdbarch, int regnum);
109 #endif /* m68k-tdep.h */