c481dac737
(struct gdbarch_tdep): Add struct_return. * m68k-tdep.c (m68k_push_dummy_call): Non-scalars bigger than 4 bytes are padded to the right, not to the left. Pass struct value address in register %a1, not on stack. (m68k_use_struct_convention): New function. (m68k_gdbarch_init): Set use_struct_convention. Initialize struct_return in tdep to pcc_struct_return. * m68klinux-tdep.c (m68k_linux_init_abi): Set struct_return to reg_struct_return.
88 lines
2.8 KiB
C
88 lines
2.8 KiB
C
/* Common target dependent code for the Motorola 68000 series.
|
|
Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2000, 2001, 2003
|
|
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 2 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, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#ifndef M68K_TDEP_H
|
|
#define M68K_TDEP_H
|
|
|
|
struct frame_info;
|
|
|
|
/* Register numbers of various important registers.
|
|
Note that some of these values are "real" register numbers,
|
|
and correspond to the general registers of the machine,
|
|
and some are "phony" register numbers which are too large
|
|
to be actual register numbers as far as the user is concerned
|
|
but do serve to get the desired values when passed to read_register. */
|
|
|
|
enum
|
|
{
|
|
M68K_D0_REGNUM = 0,
|
|
M68K_D1_REGNUM = 1,
|
|
M68K_A0_REGNUM = 8,
|
|
M68K_A1_REGNUM = 9,
|
|
M68K_FP_REGNUM = 14, /* Contains address of executing stack frame */
|
|
M68K_SP_REGNUM = 15, /* Contains address of top of stack */
|
|
M68K_PS_REGNUM = 16, /* Contains processor status */
|
|
M68K_PC_REGNUM = 17, /* Contains 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
|
|
};
|
|
|
|
#define M68K_NUM_REGS (M68K_FPI_REGNUM + 1)
|
|
|
|
/* Size of the largest register. */
|
|
#define M68K_MAX_REGISTER_SIZE 12
|
|
|
|
struct m68k_sigtramp_info
|
|
{
|
|
/* Address of sigcontext. */
|
|
CORE_ADDR sigcontext_addr;
|
|
|
|
/* Offset of registers in `struct sigcontext'. */
|
|
int *sc_reg_offset;
|
|
};
|
|
|
|
/* Convention for returning structures. */
|
|
|
|
enum struct_return
|
|
{
|
|
pcc_struct_return, /* Return "short" structures in memory. */
|
|
reg_struct_return /* Return "short" structures in registers. */
|
|
};
|
|
|
|
/* 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;
|
|
|
|
/* Get info about sigtramp. */
|
|
struct m68k_sigtramp_info (*get_sigtramp_info) (struct frame_info *);
|
|
|
|
/* Convention for returning structures. */
|
|
enum struct_return struct_return;
|
|
};
|
|
|
|
#endif /* M68K_TDEP_H */
|