| 1 | /* Target-dependent header for the Nios II architecture, for GDB. |
| 2 | Copyright (C) 2012-2014 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 */ |