1 /* Common target dependent code for GDB on Alpha systems.
2 Copyright 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2002 Free
3 Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
27 /* Say how long (ordinary) registers are. This is a piece of bogosity
28 used in push_word and a few other places; REGISTER_RAW_SIZE is the
29 real way to know how big a register is. */
30 #define ALPHA_REGISTER_SIZE 8
32 /* Number of machine registers. */
33 #define ALPHA_NUM_REGS 66
35 /* Total amount of space needed to store our copies of the machine's
37 #define ALPHA_REGISTER_BYTES (ALPHA_NUM_REGS * 8)
39 /* Largest value REGISTER_RAW_SIZE can have. */
40 #define ALPHA_MAX_REGISTER_RAW_SIZE 8
42 /* Largest value REGISTER_VIRTUAL_SIZE can have. */
43 #define ALPHA_MAX_REGISTER_VIRTUAL_SIZE 8
45 /* Register numbers of various important registers.
46 Note that most of these values are "real" register numbers,
47 and correspond to the general registers of the machine,
48 and FP_REGNUM is a "phony" register number which is too large
49 to be an actual register number as far as the user is concerned
50 but serves to get the desired value when passed to read_register. */
52 #define ALPHA_V0_REGNUM 0 /* Function integer return value */
53 #define ALPHA_T7_REGNUM 8 /* Return address register for OSF/1 __add* */
54 #define ALPHA_GCC_FP_REGNUM 15 /* Used by gcc as frame register */
55 #define ALPHA_A0_REGNUM 16 /* Loc of first arg during a subr call */
56 #define ALPHA_T9_REGNUM 23 /* Return address register for OSF/1 __div* */
57 #define ALPHA_T12_REGNUM 27 /* Contains start addr of current proc */
58 #define ALPHA_SP_REGNUM 30 /* Contains address of top of stack */
59 #define ALPHA_RA_REGNUM 26 /* Contains return address value */
60 #define ALPHA_ZERO_REGNUM 31 /* Read-only register, always 0 */
61 #define ALPHA_FP0_REGNUM 32 /* Floating point register 0 */
62 #define ALPHA_FPA0_REGNUM 48 /* First float arg during a subr call */
63 #define ALPHA_FPCR_REGNUM 63 /* Floating point control register */
64 #define ALPHA_PC_REGNUM 64 /* Contains program counter */
65 #define ALPHA_FP_REGNUM 65 /* Virtual frame pointer */
67 /* The alpha has two different virtual pointers for arguments and locals.
69 The virtual argument pointer is pointing to the bottom of the argument
70 transfer area, which is located immediately below the virtual frame
71 pointer. Its size is fixed for the native compiler, it is either zero
72 (for the no arguments case) or large enough to hold all argument registers.
73 gcc uses a variable sized argument transfer area. As it has
74 to stay compatible with the native debugging tools it has to use the same
75 virtual argument pointer and adjust the argument offsets accordingly.
77 The virtual local pointer is localoff bytes below the virtual frame
78 pointer, the value of localoff is obtained from the PDR. */
79 #define ALPHA_NUM_ARG_REGS 6
81 /* Target-dependent structure in gdbarch. */
84 enum gdb_osabi osabi
; /* OS/ABI of inferior. */
86 CORE_ADDR vm_min_address
; /* used by heuristic_proc_start */
88 /* If PC is inside a dynamically-generated signal trampoline function
89 (i.e. one copied onto the user stack at run-time), return how many
90 bytes PC is beyond the start of that function. Otherwise, return -1. */
91 LONGEST (*dynamic_sigtramp_offset
) (CORE_ADDR
);
93 /* If FRAME refers to a sigtramp frame, return the address of the next
95 CORE_ADDR (*skip_sigtramp_frame
) (struct frame_info
*, CORE_ADDR
);
97 /* Translate a signal handler frame into the address of the sigcontext
98 structure for that signal handler. */
99 CORE_ADDR (*sigcontext_addr
) (struct frame_info
*);
101 int jb_pc
; /* Offset to PC value in jump buffer.
102 If htis is negative, longjmp support
104 size_t jb_elt_size
; /* And the size of each entry in the buf. */
107 void alpha_software_single_step (enum target_signal
, int);
109 #endif /* ALPHA_TDEP_H */
This page took 0.035018 seconds and 4 git commands to generate.