1 /* Target-dependent header for the Nios II architecture, for GDB.
2 Copyright (C) 2012-2013 Free Software Foundation, Inc.
3 Contributed by Mentor Graphics, 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 3 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, see <http://www.gnu.org/licenses/>. */
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
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
55 /* R4-R7 are used for argument passing. */
56 #define NIOS2_FIRST_ARGREG NIOS2_R4_REGNUM
57 #define NIOS2_LAST_ARGREG NIOS2_R7_REGNUM
59 /* Number of all registers. */
60 #define NIOS2_NUM_REGS 49
62 /* Size of an instruction, in bytes. */
63 #define NIOS2_OPCODE_SIZE 4
65 /* Target-dependent structure in gdbarch. */
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
);
72 /* Offset to PC value in jump buffer.
73 If this is negative, longjmp support will be disabled. */
77 extern struct target_desc
*tdesc_nios2_linux
;
78 extern struct target_desc
*tdesc_nios2
;
80 #endif /* NIOS2_TDEP_H */
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