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.
89 lines
2.8 KiB
C
89 lines
2.8 KiB
C
/* Common target dependent code for the Motorola 68000 series.
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Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2000, 2001, 2003
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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 2 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, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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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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Note that some of these values are "real" register numbers,
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and correspond to the general registers of the machine,
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and some are "phony" register numbers which are too large
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to be actual register numbers as far as the user is concerned
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but do serve to get the desired values when passed to read_register. */
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enum
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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_A0_REGNUM = 8,
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M68K_A1_REGNUM = 9,
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M68K_FP_REGNUM = 14, /* Contains address of executing stack frame */
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M68K_SP_REGNUM = 15, /* Contains address of top of stack */
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M68K_PS_REGNUM = 16, /* Contains processor status */
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M68K_PC_REGNUM = 17, /* Contains 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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#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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struct m68k_sigtramp_info
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{
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/* Address of sigcontext. */
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CORE_ADDR sigcontext_addr;
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/* Offset of registers in `struct sigcontext'. */
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int *sc_reg_offset;
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};
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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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/* 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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/* Get info about sigtramp. */
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struct m68k_sigtramp_info (*get_sigtramp_info) (struct frame_info *);
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/* Convention for returning structures. */
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enum struct_return struct_return;
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};
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#endif /* M68K_TDEP_H */
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