ptrace.h 3.5 KB

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  1. /*
  2. * linux/include/asm-arm/ptrace.h
  3. *
  4. * Copyright (C) 1996-2003 Russell King
  5. *
  6. * This program is free software; you can redistribute it and/or modify
  7. * it under the terms of the GNU General Public License version 2 as
  8. * published by the Free Software Foundation.
  9. */
  10. #ifndef __ASM_ARM_PTRACE_H
  11. #define __ASM_ARM_PTRACE_H
  12. #define PTRACE_GETREGS 12
  13. #define PTRACE_SETREGS 13
  14. #define PTRACE_GETFPREGS 14
  15. #define PTRACE_SETFPREGS 15
  16. #define PTRACE_GETWMMXREGS 18
  17. #define PTRACE_SETWMMXREGS 19
  18. #define PTRACE_OLDSETOPTIONS 21
  19. #define PTRACE_GET_THREAD_AREA 22
  20. #define PTRACE_SET_SYSCALL 23
  21. /* PTRACE_SYSCALL is 24 */
  22. #define PTRACE_GETCRUNCHREGS 25
  23. #define PTRACE_SETCRUNCHREGS 26
  24. /*
  25. * PSR bits
  26. */
  27. #define USR26_MODE 0x00000000
  28. #define FIQ26_MODE 0x00000001
  29. #define IRQ26_MODE 0x00000002
  30. #define SVC26_MODE 0x00000003
  31. #define USR_MODE 0x00000010
  32. #define FIQ_MODE 0x00000011
  33. #define IRQ_MODE 0x00000012
  34. #define SVC_MODE 0x00000013
  35. #define ABT_MODE 0x00000017
  36. #define UND_MODE 0x0000001b
  37. #define SYSTEM_MODE 0x0000001f
  38. #define MODE32_BIT 0x00000010
  39. #define MODE_MASK 0x0000001f
  40. #define PSR_T_BIT 0x00000020
  41. #define PSR_F_BIT 0x00000040
  42. #define PSR_I_BIT 0x00000080
  43. #define PSR_J_BIT 0x01000000
  44. #define PSR_Q_BIT 0x08000000
  45. #define PSR_V_BIT 0x10000000
  46. #define PSR_C_BIT 0x20000000
  47. #define PSR_Z_BIT 0x40000000
  48. #define PSR_N_BIT 0x80000000
  49. #define PCMASK 0
  50. /*
  51. * Groups of PSR bits
  52. */
  53. #define PSR_f 0xff000000 /* Flags */
  54. #define PSR_s 0x00ff0000 /* Status */
  55. #define PSR_x 0x0000ff00 /* Extension */
  56. #define PSR_c 0x000000ff /* Control */
  57. #ifndef __ASSEMBLY__
  58. /*
  59. * This struct defines the way the registers are stored on the
  60. * stack during a system call. Note that sizeof(struct pt_regs)
  61. * has to be a multiple of 8.
  62. */
  63. struct pt_regs {
  64. long uregs[18];
  65. };
  66. #define ARM_cpsr uregs[16]
  67. #define ARM_pc uregs[15]
  68. #define ARM_lr uregs[14]
  69. #define ARM_sp uregs[13]
  70. #define ARM_ip uregs[12]
  71. #define ARM_fp uregs[11]
  72. #define ARM_r10 uregs[10]
  73. #define ARM_r9 uregs[9]
  74. #define ARM_r8 uregs[8]
  75. #define ARM_r7 uregs[7]
  76. #define ARM_r6 uregs[6]
  77. #define ARM_r5 uregs[5]
  78. #define ARM_r4 uregs[4]
  79. #define ARM_r3 uregs[3]
  80. #define ARM_r2 uregs[2]
  81. #define ARM_r1 uregs[1]
  82. #define ARM_r0 uregs[0]
  83. #define ARM_ORIG_r0 uregs[17]
  84. #ifdef __KERNEL__
  85. #define user_mode(regs) \
  86. (((regs)->ARM_cpsr & 0xf) == 0)
  87. #ifdef CONFIG_ARM_THUMB
  88. #define thumb_mode(regs) \
  89. (((regs)->ARM_cpsr & PSR_T_BIT))
  90. #else
  91. #define thumb_mode(regs) (0)
  92. #endif
  93. #define processor_mode(regs) \
  94. ((regs)->ARM_cpsr & MODE_MASK)
  95. #define interrupts_enabled(regs) \
  96. (!((regs)->ARM_cpsr & PSR_I_BIT))
  97. #define fast_interrupts_enabled(regs) \
  98. (!((regs)->ARM_cpsr & PSR_F_BIT))
  99. #define condition_codes(regs) \
  100. ((regs)->ARM_cpsr & (PSR_V_BIT|PSR_C_BIT|PSR_Z_BIT|PSR_N_BIT))
  101. /* Are the current registers suitable for user mode?
  102. * (used to maintain security in signal handlers)
  103. */
  104. static inline int valid_user_regs(struct pt_regs *regs)
  105. {
  106. if (user_mode(regs) &&
  107. (regs->ARM_cpsr & (PSR_F_BIT|PSR_I_BIT)) == 0)
  108. return 1;
  109. /*
  110. * Force CPSR to something logical...
  111. */
  112. regs->ARM_cpsr &= PSR_f | PSR_s | PSR_x | PSR_T_BIT | MODE32_BIT;
  113. return 0;
  114. }
  115. #endif /* __KERNEL__ */
  116. #define pc_pointer(v) \
  117. ((v) & ~PCMASK)
  118. #define instruction_pointer(regs) \
  119. (pc_pointer((regs)->ARM_pc))
  120. #ifdef CONFIG_SMP
  121. extern unsigned long profile_pc(struct pt_regs *regs);
  122. #else
  123. #define profile_pc(regs) instruction_pointer(regs)
  124. #endif
  125. #ifdef __KERNEL__
  126. #define predicate(x) ((x) & 0xf0000000)
  127. #define PREDICATE_ALWAYS 0xe0000000
  128. #endif
  129. #endif /* __ASSEMBLY__ */
  130. #endif