gdb/nios2-tdep.h - gdb

Data types defined

Macros defined

Source code

  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.

  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/>.  */

  20. #ifndef NIOS2_TDEP_H
  21. ‌#define NIOS2_TDEP_H

  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

  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.  */
  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);

  72.   /* Offset to PC value in jump buffer.
  73.      If this is negative, longjmp support will be disabled.  */
  74.   int jb_pc;
  75. };

  77. extern struct target_desc *tdesc_nios2_linux;
  78. extern struct target_desc *tdesc_nios2;

  80. #endif /* NIOS2_TDEP_H */