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/tmp/gdb-7.10/gdb/nios2-tdep.h
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1 /* Target-dependent header for the Nios II architecture, for GDB.
2  Copyright (C) 2012-2015 Free Software Foundation, Inc.
3  Contributed by Mentor Graphics, Inc.
4 
5  This file is part of GDB.
6 
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 3 of the License, or
10  (at your option) any later version.
11 
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.
16 
17  You should have received a copy of the GNU General Public License
18  along with this program. If not, see <http://www.gnu.org/licenses/>. */
19 
20 #ifndef NIOS2_TDEP_H
21 #define NIOS2_TDEP_H
22 
23 /* Registers. */
24 #define NIOS2_Z_REGNUM 0 /* Zero */
25 #define NIOS2_R2_REGNUM 2 /* used for return value */
26 #define NIOS2_R3_REGNUM 3 /* used for return value */
27 /* Used for hidden zero argument to store ptr to struct return value. */
28 #define NIOS2_R4_REGNUM 4
29 #define NIOS2_R7_REGNUM 7
30 #define NIOS2_GP_REGNUM 26 /* Global Pointer */
31 #define NIOS2_SP_REGNUM 27 /* Stack Pointer */
32 #define NIOS2_FP_REGNUM 28 /* Frame Pointer */
33 #define NIOS2_EA_REGNUM 29 /* Exception address */
34 #define NIOS2_BA_REGNUM 30 /* Breakpoint return address */
35 #define NIOS2_RA_REGNUM 31 /* Return address */
36 #define NIOS2_PC_REGNUM 32
37 
38 /* Control registers. */
39 #define NIOS2_STATUS_REGNUM 33
40 #define NIOS2_ESTATUS_REGNUM 34
41 #define NIOS2_BSTATUS_REGNUM 35
42 #define NIOS2_IENABLE_REGNUM 36
43 #define NIOS2_IPENDING_REGNUM 37
44 #define NIOS2_CPUID_REGNUM 38
45 #define NIOS2_EXCEPTION_REGNUM 40
46 #define NIOS2_PTEADDR_REGNUM 41
47 #define NIOS2_TLBACC_REGNUM 42
48 #define NIOS2_TLBMISC_REGNUM 43
49 #define NIOS2_ECCINJ_REGNUM 44
50 #define NIOS2_BADADDR_REGNUM 45
51 #define NIOS2_CONFIG_REGNUM 46
52 #define NIOS2_MPUBASE_REGNUM 47
53 #define NIOS2_MPUACC_REGNUM 48
54 
55 /* R4-R7 are used for argument passing. */
56 #define NIOS2_FIRST_ARGREG NIOS2_R4_REGNUM
57 #define NIOS2_LAST_ARGREG NIOS2_R7_REGNUM
58 
59 /* Number of all registers. */
60 #define NIOS2_NUM_REGS 49
61 
62 /* Size of an instruction, in bytes. */
63 #define NIOS2_OPCODE_SIZE 4
64 
65 /* Target-dependent structure in gdbarch. */
66 struct gdbarch_tdep
67 {
68  /* Assumes FRAME is stopped at a syscall (trap) instruction; returns
69  the expected next PC. */
70  CORE_ADDR (*syscall_next_pc) (struct frame_info *frame);
71 
72  /* Offset to PC value in jump buffer.
73  If this is negative, longjmp support will be disabled. */
74  int jb_pc;
75 };
76 
77 extern struct target_desc *tdesc_nios2_linux;
78 extern struct target_desc *tdesc_nios2;
79 
80 #endif /* NIOS2_TDEP_H */
CORE_ADDR(* syscall_next_pc)(struct frame_info *frame)
Definition: arm-tdep.h:206
bfd_vma CORE_ADDR
Definition: common-types.h:41
struct target_desc * tdesc_nios2_linux
Definition: nios2-linux.c:8
struct target_desc * tdesc_nios2
Definition: nios2.c:8