| /* Target-dependent code for the Motorola 68000 series. |
| |
| Copyright (C) 1990-1996, 1999-2001, 2003-2004, 2007-2012 Free |
| Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| 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 |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef M68K_TDEP_H |
| #define M68K_TDEP_H |
| |
| struct frame_info; |
| |
| /* Register numbers of various important registers. */ |
| |
| enum m68k_regnum |
| { |
| M68K_D0_REGNUM = 0, |
| M68K_D1_REGNUM = 1, |
| M68K_D2_REGNUM = 2, |
| M68K_D7_REGNUM = 7, |
| M68K_A0_REGNUM = 8, |
| M68K_A1_REGNUM = 9, |
| M68K_A2_REGNUM = 10, |
| M68K_FP_REGNUM = 14, /* Address of executing stack frame. */ |
| M68K_SP_REGNUM = 15, /* Address of top of stack. */ |
| M68K_PS_REGNUM = 16, /* Processor status. */ |
| M68K_PC_REGNUM = 17, /* Program counter. */ |
| M68K_FP0_REGNUM = 18, /* Floating point register 0. */ |
| M68K_FPC_REGNUM = 26, /* 68881 control register. */ |
| M68K_FPS_REGNUM = 27, /* 68881 status register. */ |
| M68K_FPI_REGNUM = 28 |
| }; |
| |
| /* Number of machine registers. */ |
| #define M68K_NUM_REGS (M68K_FPI_REGNUM + 1) |
| |
| /* Size of the largest register. */ |
| #define M68K_MAX_REGISTER_SIZE 12 |
| |
| /* Convention for returning structures. */ |
| |
| enum struct_return |
| { |
| pcc_struct_return, /* Return "short" structures in memory. */ |
| reg_struct_return /* Return "short" structures in registers. */ |
| }; |
| |
| /* Particular flavour of m68k. */ |
| enum m68k_flavour |
| { |
| m68k_no_flavour, |
| m68k_coldfire_flavour, |
| m68k_fido_flavour |
| }; |
| |
| /* Target-dependent structure in gdbarch. */ |
| |
| struct gdbarch_tdep |
| { |
| /* Offset to PC value in the jump buffer. If this is negative, |
| longjmp support will be disabled. */ |
| int jb_pc; |
| /* The size of each entry in the jump buffer. */ |
| size_t jb_elt_size; |
| |
| /* Register in which the address to store a structure value is |
| passed to a function. */ |
| int struct_value_regnum; |
| |
| /* Convention for returning structures. */ |
| enum struct_return struct_return; |
| |
| /* Convention for returning floats. zero in int regs, non-zero in float. */ |
| int float_return; |
| |
| /* The particular flavour of m68k. */ |
| enum m68k_flavour flavour; |
| |
| /* Flag set if the floating point registers are present, or assumed |
| to be present. */ |
| int fpregs_present; |
| |
| /* ISA-specific data types. */ |
| struct type *m68k_ps_type; |
| struct type *m68881_ext_type; |
| }; |
| |
| /* Initialize a SVR4 architecture variant. */ |
| extern void m68k_svr4_init_abi (struct gdbarch_info, struct gdbarch *); |
| |
| |
| /* Functions exported from m68kbsd-tdep.c. */ |
| |
| extern int m68kbsd_fpreg_offset (struct gdbarch *gdbarch, int regnum); |
| |
| #endif /* m68k-tdep.h */ |