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/tmp/gdb-7.10/gdb/alpha-tdep.h
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1 /* Common target dependent code for GDB on Alpha systems.
2  Copyright (C) 1993-2015 Free Software Foundation, Inc.
3 
4  This file is part of GDB.
5 
6  This program is free software; you can redistribute it and/or modify
7  it under the terms of the GNU General Public License as published by
8  the Free Software Foundation; either version 3 of the License, or
9  (at your option) any later version.
10 
11  This program is distributed in the hope that it will be useful,
12  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  GNU General Public License for more details.
15 
16  You should have received a copy of the GNU General Public License
17  along with this program. If not, see <http://www.gnu.org/licenses/>. */
18 
19 #ifndef ALPHA_TDEP_H
20 #define ALPHA_TDEP_H
21 
22 struct regcache;
23 
24 /* Say how long (ordinary) registers are. This is a piece of bogosity
25  used in push_word and a few other places; register_size() is the
26  real way to know how big a register is. */
27 #define ALPHA_REGISTER_SIZE 8
28 
29 /* Number of machine registers. */
30 #define ALPHA_NUM_REGS 67
31 
32 /* Register numbers of various important registers. Note that most of
33  these values are "real" register numbers, and correspond to the
34  general registers of the machine. */
35 
36 #define ALPHA_V0_REGNUM 0 /* Function integer return value */
37 #define ALPHA_T7_REGNUM 8 /* Return address register for OSF/1 __add* */
38 #define ALPHA_S0_REGNUM 9 /* First saved register */
39 #define ALPHA_GCC_FP_REGNUM 15 /* Used by gcc as frame register */
40 #define ALPHA_A0_REGNUM 16 /* Loc of first arg during a subr call */
41 #define ALPHA_T9_REGNUM 23 /* Return address register for OSF/1 __div* */
42 #define ALPHA_RA_REGNUM 26 /* Contains return address value */
43 #define ALPHA_T12_REGNUM 27 /* Contains start addr of current proc */
44 #define ALPHA_GP_REGNUM 29 /* Contains the global pointer */
45 #define ALPHA_SP_REGNUM 30 /* Contains address of top of stack */
46 #define ALPHA_ZERO_REGNUM 31 /* Read-only register, always 0 */
47 #define ALPHA_FP0_REGNUM 32 /* Floating point register 0 */
48 #define ALPHA_FPA0_REGNUM 48 /* First float arg during a subr call */
49 #define ALPHA_FPCR_REGNUM 63 /* Floating point control register */
50 #define ALPHA_PC_REGNUM 64 /* Contains program counter */
51 #define ALPHA_UNIQUE_REGNUM 66 /* PAL_rduniq value */
52 
53 /* Instruction size. */
54 #define ALPHA_INSN_SIZE 4
55 
56 /* The alpha has two different virtual pointers for arguments and locals.
57 
58  The virtual argument pointer is pointing to the bottom of the argument
59  transfer area, which is located immediately below the virtual frame
60  pointer. Its size is fixed for the native compiler, it is either zero
61  (for the no arguments case) or large enough to hold all argument registers.
62  gcc uses a variable sized argument transfer area. As it has
63  to stay compatible with the native debugging tools it has to use the same
64  virtual argument pointer and adjust the argument offsets accordingly.
65 
66  The virtual local pointer is localoff bytes below the virtual frame
67  pointer, the value of localoff is obtained from the PDR. */
68 #define ALPHA_NUM_ARG_REGS 6
69 
70 /* Target-dependent structure in gdbarch. */
71 struct gdbarch_tdep
72 {
73  CORE_ADDR vm_min_address; /* Used by alpha_heuristic_proc_start. */
74 
75  /* If PC is inside a dynamically-generated signal trampoline function
76  (i.e. one copied onto the user stack at run-time), return how many
77  bytes PC is beyond the start of that function. Otherwise, return -1. */
79 
80  /* Translate a signal handler stack base address into the address of
81  the sigcontext structure for that signal handler. */
83 
84  /* Does the PC fall in a signal trampoline. */
85  /* NOTE: cagney/2004-04-30: Do not copy/clone this code. Instead
86  look at tramp-frame.h and other simplier per-architecture
87  sigtramp unwinders. */
89  const char *name);
90 
91  /* If TYPE will be returned in memory, return true. */
92  int (*return_in_memory) (struct type *type);
93 
94  /* Offset of registers in `struct sigcontext'. */
98 
99  int jb_pc; /* Offset to PC value in jump buffer.
100  If htis is negative, longjmp support
101  will be disabled. */
102  size_t jb_elt_size; /* And the size of each entry in the buf. */
103 };
104 
105 extern unsigned int alpha_read_insn (struct gdbarch *gdbarch, CORE_ADDR pc);
106 extern int alpha_software_single_step (struct frame_info *frame);
108 
109 extern void alpha_mdebug_init_abi (struct gdbarch_info, struct gdbarch *);
110 extern void alpha_dwarf2_init_abi (struct gdbarch_info, struct gdbarch *);
111 
112 extern void alpha_supply_int_regs (struct regcache *, int, const void *,
113  const void *, const void *);
114 extern void alpha_fill_int_regs (const struct regcache *, int,
115  void *, void *, void *);
116 extern void alpha_supply_fp_regs (struct regcache *, int,
117  const void *, const void *);
118 extern void alpha_fill_fp_regs (const struct regcache *,
119  int, void *, void *);
120 
121 #endif /* ALPHA_TDEP_H */
void alpha_supply_int_regs(struct regcache *, int, const void *, const void *, const void *)
Definition: alpha-tdep.c:1499
bfd_vma CORE_ADDR
Definition: common-types.h:41
int(* return_in_memory)(struct type *type)
Definition: alpha-tdep.h:92
LONGEST(* dynamic_sigtramp_offset)(struct gdbarch *, CORE_ADDR)
Definition: alpha-tdep.h:78
void alpha_fill_fp_regs(const struct regcache *, int, void *, void *)
Definition: alpha-tdep.c:1558
struct m32c_reg * pc
Definition: m32c-tdep.c:111
CORE_ADDR(* sigcontext_addr)(struct frame_info *)
Definition: alpha-tdep.h:82
int sc_pc_offset
Definition: alpha-tdep.h:95
unsigned int alpha_read_insn(struct gdbarch *gdbarch, CORE_ADDR pc)
Definition: alpha-tdep.c:681
const char *const name
Definition: aarch64-tdep.c:68
int sc_regs_offset
Definition: alpha-tdep.h:96
CORE_ADDR alpha_after_prologue(CORE_ADDR pc)
Definition: alpha-tdep.c:661
void alpha_fill_int_regs(const struct regcache *, int, void *, void *, void *)
Definition: alpha-tdep.c:1524
Definition: gdbtypes.h:749
static const char * type
Definition: language.c:103
size_t jb_elt_size
Definition: aarch64-tdep.h:83
const char const char int
Definition: command.h:229
int(* pc_in_sigtramp)(struct gdbarch *gdbarch, CORE_ADDR pc, const char *name)
Definition: alpha-tdep.h:88
int alpha_software_single_step(struct frame_info *frame)
Definition: alpha-tdep.c:1725
void alpha_supply_fp_regs(struct regcache *, int, const void *, const void *)
Definition: alpha-tdep.c:1542
void alpha_dwarf2_init_abi(struct gdbarch_info, struct gdbarch *)
Definition: alpha-tdep.c:1849
CORE_ADDR vm_min_address
Definition: alpha-tdep.h:73
int sc_fpregs_offset
Definition: alpha-tdep.h:97
long long LONGEST
Definition: common-types.h:52
void alpha_mdebug_init_abi(struct gdbarch_info, struct gdbarch *)