| Wolfgang Denk | 83c1585 | 2006-10-24 14:21:16 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2006 Atmel Corporation |
| 3 | * |
| Wolfgang Denk | d79de1d | 2013-07-08 09:37:19 +0200 | [diff] [blame] | 4 | * SPDX-License-Identifier: GPL-2.0+ |
| Wolfgang Denk | 83c1585 | 2006-10-24 14:21:16 +0200 | [diff] [blame] | 5 | */ |
| 6 | #ifndef __ASM_AVR32_PTRACE_H |
| 7 | #define __ASM_AVR32_PTRACE_H |
| 8 | |
| 9 | /* |
| 10 | * Status Register bits |
| 11 | */ |
| 12 | #define SR_H 0x40000000 |
| 13 | #define SR_R 0x20000000 |
| 14 | #define SR_J 0x10000000 |
| 15 | #define SR_DM 0x08000000 |
| 16 | #define SR_D 0x04000000 |
| 17 | #define MODE_NMI 0x01c00000 |
| 18 | #define MODE_EXCEPTION 0x01800000 |
| 19 | #define MODE_INT3 0x01400000 |
| 20 | #define MODE_INT2 0x01000000 |
| 21 | #define MODE_INT1 0x00c00000 |
| 22 | #define MODE_INT0 0x00800000 |
| 23 | #define MODE_SUPERVISOR 0x00400000 |
| 24 | #define MODE_USER 0x00000000 |
| 25 | #define MODE_MASK 0x01c00000 |
| 26 | #define SR_EM 0x00200000 |
| 27 | #define SR_I3M 0x00100000 |
| 28 | #define SR_I2M 0x00080000 |
| 29 | #define SR_I1M 0x00040000 |
| 30 | #define SR_I0M 0x00020000 |
| 31 | #define SR_GM 0x00010000 |
| 32 | |
| 33 | #define MODE_SHIFT 22 |
| 34 | #define SR_EM_BIT 21 |
| 35 | #define SR_I3M_BIT 20 |
| 36 | #define SR_I2M_BIT 19 |
| 37 | #define SR_I1M_BIT 18 |
| 38 | #define SR_I0M_BIT 17 |
| 39 | #define SR_GM_BIT 16 |
| 40 | |
| 41 | /* The user-visible part */ |
| 42 | #define SR_Q 0x00000010 |
| 43 | #define SR_V 0x00000008 |
| 44 | #define SR_N 0x00000004 |
| 45 | #define SR_Z 0x00000002 |
| 46 | #define SR_C 0x00000001 |
| 47 | |
| 48 | /* |
| 49 | * The order is defined by the stdsp instruction. r0 is stored first, so it |
| 50 | * gets the highest address. |
| 51 | * |
| 52 | * Registers 0-12 are general-purpose registers (r12 is normally used for |
| 53 | * the function return value). |
| 54 | * Register 13 is the stack pointer |
| 55 | * Register 14 is the link register |
| 56 | * Register 15 is the program counter |
| 57 | */ |
| 58 | #define FRAME_SIZE_FULL 72 |
| 59 | #define REG_R12_ORIG 68 |
| 60 | #define REG_R0 64 |
| 61 | #define REG_R1 60 |
| 62 | #define REG_R2 56 |
| 63 | #define REG_R3 52 |
| 64 | #define REG_R4 48 |
| 65 | #define REG_R5 44 |
| 66 | #define REG_R6 40 |
| 67 | #define REG_R7 36 |
| 68 | #define REG_R8 32 |
| 69 | #define REG_R9 28 |
| 70 | #define REG_R10 34 |
| 71 | #define REG_R11 20 |
| 72 | #define REG_R12 16 |
| 73 | #define REG_SP 12 |
| 74 | #define REG_LR 8 |
| 75 | |
| 76 | #define FRAME_SIZE_MIN 8 |
| 77 | #define REG_PC 4 |
| 78 | #define REG_SR 0 |
| 79 | |
| 80 | #ifndef __ASSEMBLY__ |
| 81 | struct pt_regs { |
| 82 | /* These are always saved */ |
| 83 | unsigned long sr; |
| 84 | unsigned long pc; |
| 85 | |
| 86 | /* These are sometimes saved */ |
| 87 | unsigned long lr; |
| 88 | unsigned long sp; |
| 89 | unsigned long r12; |
| 90 | unsigned long r11; |
| 91 | unsigned long r10; |
| 92 | unsigned long r9; |
| 93 | unsigned long r8; |
| 94 | unsigned long r7; |
| 95 | unsigned long r6; |
| 96 | unsigned long r5; |
| 97 | unsigned long r4; |
| 98 | unsigned long r3; |
| 99 | unsigned long r2; |
| 100 | unsigned long r1; |
| 101 | unsigned long r0; |
| 102 | |
| 103 | /* Only saved on system call */ |
| 104 | unsigned long r12_orig; |
| 105 | }; |
| 106 | |
| 107 | #ifdef __KERNEL__ |
| 108 | # define user_mode(regs) (((regs)->sr & MODE_MASK) == MODE_USER) |
| 109 | # define instruction_pointer(regs) ((regs)->pc) |
| 110 | extern void show_regs (struct pt_regs *); |
| 111 | |
| 112 | static __inline__ int valid_user_regs(struct pt_regs *regs) |
| 113 | { |
| 114 | /* |
| 115 | * Some of the Java bits might be acceptable if/when we |
| 116 | * implement some support for that stuff... |
| 117 | */ |
| 118 | if ((regs->sr & 0xffff0000) == 0) |
| 119 | return 1; |
| 120 | |
| 121 | /* |
| 122 | * Force status register flags to be sane and report this |
| 123 | * illegal behaviour... |
| 124 | */ |
| 125 | regs->sr &= 0x0000ffff; |
| 126 | return 0; |
| 127 | } |
| 128 | #endif |
| 129 | |
| 130 | #endif /* ! __ASSEMBLY__ */ |
| 131 | |
| 132 | #endif /* __ASM_AVR32_PTRACE_H */ |