projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| a1217d97 | 1 | /* Target-dependent header for the Nios II architecture, for GDB. |
| b811d2c2 | 2 | Copyright (C) 2012-2020 Free Software Foundation, Inc. |
| a1217d97 SL |
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 | ||
| af60a1ef SL |
23 | /* Nios II ISA specific encodings and macros. */ |
| 24 | #include "opcode/nios2.h" | |
| 25 | ||
| a1217d97 SL |
26 | /* Registers. */ |
| 27 | #define NIOS2_Z_REGNUM 0 /* Zero */ | |
| 28 | #define NIOS2_R2_REGNUM 2 /* used for return value */ | |
| 29 | #define NIOS2_R3_REGNUM 3 /* used for return value */ | |
| 30 | /* Used for hidden zero argument to store ptr to struct return value. */ | |
| 31 | #define NIOS2_R4_REGNUM 4 | |
| 32 | #define NIOS2_R7_REGNUM 7 | |
| 33 | #define NIOS2_GP_REGNUM 26 /* Global Pointer */ | |
| 34 | #define NIOS2_SP_REGNUM 27 /* Stack Pointer */ | |
| 35 | #define NIOS2_FP_REGNUM 28 /* Frame Pointer */ | |
| 36 | #define NIOS2_EA_REGNUM 29 /* Exception address */ | |
| 37 | #define NIOS2_BA_REGNUM 30 /* Breakpoint return address */ | |
| 38 | #define NIOS2_RA_REGNUM 31 /* Return address */ | |
| 39 | #define NIOS2_PC_REGNUM 32 | |
| 40 | ||
| 41 | /* Control registers. */ | |
| 42 | #define NIOS2_STATUS_REGNUM 33 | |
| 43 | #define NIOS2_ESTATUS_REGNUM 34 | |
| 44 | #define NIOS2_BSTATUS_REGNUM 35 | |
| 45 | #define NIOS2_IENABLE_REGNUM 36 | |
| 46 | #define NIOS2_IPENDING_REGNUM 37 | |
| 47 | #define NIOS2_CPUID_REGNUM 38 | |
| 48 | #define NIOS2_EXCEPTION_REGNUM 40 | |
| 49 | #define NIOS2_PTEADDR_REGNUM 41 | |
| 50 | #define NIOS2_TLBACC_REGNUM 42 | |
| 51 | #define NIOS2_TLBMISC_REGNUM 43 | |
| 52 | #define NIOS2_ECCINJ_REGNUM 44 | |
| 53 | #define NIOS2_BADADDR_REGNUM 45 | |
| 54 | #define NIOS2_CONFIG_REGNUM 46 | |
| 55 | #define NIOS2_MPUBASE_REGNUM 47 | |
| 56 | #define NIOS2_MPUACC_REGNUM 48 | |
| 57 | ||
| 58 | /* R4-R7 are used for argument passing. */ | |
| 59 | #define NIOS2_FIRST_ARGREG NIOS2_R4_REGNUM | |
| 60 | #define NIOS2_LAST_ARGREG NIOS2_R7_REGNUM | |
| 61 | ||
| 62 | /* Number of all registers. */ | |
| 63 | #define NIOS2_NUM_REGS 49 | |
| 64 | ||
| 65 | /* Size of an instruction, in bytes. */ | |
| 66 | #define NIOS2_OPCODE_SIZE 4 | |
| af60a1ef | 67 | #define NIOS2_CDX_OPCODE_SIZE 2 |
| a1217d97 SL |
68 | |
| 69 | /* Target-dependent structure in gdbarch. */ | |
| 70 | struct gdbarch_tdep | |
| 71 | { | |
| 72 | /* Assumes FRAME is stopped at a syscall (trap) instruction; returns | |
| 73 | the expected next PC. */ | |
| af60a1ef SL |
74 | CORE_ADDR (*syscall_next_pc) (struct frame_info *frame, |
| 75 | const struct nios2_opcode *op); | |
| a1217d97 | 76 | |
| f489207e SL |
77 | /* Returns true if PC points to a kernel helper function. */ |
| 78 | bool (*is_kernel_helper) (CORE_ADDR pc); | |
| 79 | ||
| a1217d97 SL |
80 | /* Offset to PC value in jump buffer. |
| 81 | If this is negative, longjmp support will be disabled. */ | |
| 82 | int jb_pc; | |
| 83 | }; | |
| 84 | ||
| 85 | extern struct target_desc *tdesc_nios2_linux; | |
| 86 | extern struct target_desc *tdesc_nios2; | |
| 87 | ||
| 88 | #endif /* NIOS2_TDEP_H */ |