-/* 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.
+/* Target-dependent code for the Motorola 68000 series.
+
+ Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2000,
+ 2001, 2003, 2004 Free Software Foundation, Inc.
This file is part of GDB.
#ifndef M68K_TDEP_H
#define M68K_TDEP_H
-/* 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. */
+struct frame_info;
+
+/* Register numbers of various important registers. */
-enum
+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_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_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. */
+};
+
/* Target-dependent structure in gdbarch. */
+
struct gdbarch_tdep
{
/* Offset to PC value in the jump buffer. If this is negative,
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;
};
-#endif /* M68K_TDEP_H */
+/* Initialize a SVR4 architecture variant. */
+extern void m68k_svr4_init_abi (struct gdbarch_info, struct gdbarch *);
+\f
+
+/* Functions exported from m68kbsd-tdep.c. */
+
+extern int m68kbsd_fpreg_offset (int regnum);
+
+#endif /* m68k-tdep.h */