1 /* 2 * Copyright (C) 2004, 2006, 2009, 2010 Texas Instruments Incorporated 3 * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com) 4 * 5 * Updated for 2.6.34: Mark Salter <msalter@redhat.com> 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 version 2 as 9 * published by the Free Software Foundation. 10 */ 11 #ifndef _ASM_C6X_PTRACE_H 12 #define _ASM_C6X_PTRACE_H 13 14 #define BKPT_OPCODE 0x56454314 /* illegal opcode */ 15 16 #ifdef _BIG_ENDIAN 17 #define PT_LO(odd, even) odd 18 #define PT_HI(odd, even) even 19 #else 20 #define PT_LO(odd, even) even 21 #define PT_HI(odd, even) odd 22 #endif 23 24 #define PT_A4_ORG PT_LO(1, 0) 25 #define PT_TSR PT_HI(1, 0) 26 #define PT_ILC PT_LO(3, 2) 27 #define PT_RILC PT_HI(3, 2) 28 #define PT_CSR PT_LO(5, 4) 29 #define PT_PC PT_HI(5, 4) 30 #define PT_B16 PT_LO(7, 6) 31 #define PT_B17 PT_HI(7, 6) 32 #define PT_B18 PT_LO(9, 8) 33 #define PT_B19 PT_HI(9, 8) 34 #define PT_B20 PT_LO(11, 10) 35 #define PT_B21 PT_HI(11, 10) 36 #define PT_B22 PT_LO(13, 12) 37 #define PT_B23 PT_HI(13, 12) 38 #define PT_B24 PT_LO(15, 14) 39 #define PT_B25 PT_HI(15, 14) 40 #define PT_B26 PT_LO(17, 16) 41 #define PT_B27 PT_HI(17, 16) 42 #define PT_B28 PT_LO(19, 18) 43 #define PT_B29 PT_HI(19, 18) 44 #define PT_B30 PT_LO(21, 20) 45 #define PT_B31 PT_HI(21, 20) 46 #define PT_B0 PT_LO(23, 22) 47 #define PT_B1 PT_HI(23, 22) 48 #define PT_B2 PT_LO(25, 24) 49 #define PT_B3 PT_HI(25, 24) 50 #define PT_B4 PT_LO(27, 26) 51 #define PT_B5 PT_HI(27, 26) 52 #define PT_B6 PT_LO(29, 28) 53 #define PT_B7 PT_HI(29, 28) 54 #define PT_B8 PT_LO(31, 30) 55 #define PT_B9 PT_HI(31, 30) 56 #define PT_B10 PT_LO(33, 32) 57 #define PT_B11 PT_HI(33, 32) 58 #define PT_B12 PT_LO(35, 34) 59 #define PT_B13 PT_HI(35, 34) 60 #define PT_A16 PT_LO(37, 36) 61 #define PT_A17 PT_HI(37, 36) 62 #define PT_A18 PT_LO(39, 38) 63 #define PT_A19 PT_HI(39, 38) 64 #define PT_A20 PT_LO(41, 40) 65 #define PT_A21 PT_HI(41, 40) 66 #define PT_A22 PT_LO(43, 42) 67 #define PT_A23 PT_HI(43, 42) 68 #define PT_A24 PT_LO(45, 44) 69 #define PT_A25 PT_HI(45, 44) 70 #define PT_A26 PT_LO(47, 46) 71 #define PT_A27 PT_HI(47, 46) 72 #define PT_A28 PT_LO(49, 48) 73 #define PT_A29 PT_HI(49, 48) 74 #define PT_A30 PT_LO(51, 50) 75 #define PT_A31 PT_HI(51, 50) 76 #define PT_A0 PT_LO(53, 52) 77 #define PT_A1 PT_HI(53, 52) 78 #define PT_A2 PT_LO(55, 54) 79 #define PT_A3 PT_HI(55, 54) 80 #define PT_A4 PT_LO(57, 56) 81 #define PT_A5 PT_HI(57, 56) 82 #define PT_A6 PT_LO(59, 58) 83 #define PT_A7 PT_HI(59, 58) 84 #define PT_A8 PT_LO(61, 60) 85 #define PT_A9 PT_HI(61, 60) 86 #define PT_A10 PT_LO(63, 62) 87 #define PT_A11 PT_HI(63, 62) 88 #define PT_A12 PT_LO(65, 64) 89 #define PT_A13 PT_HI(65, 64) 90 #define PT_A14 PT_LO(67, 66) 91 #define PT_A15 PT_HI(67, 66) 92 #define PT_B14 PT_LO(69, 68) 93 #define PT_B15 PT_HI(69, 68) 94 95 #define NR_PTREGS 70 96 97 #define PT_DP PT_B14 /* Data Segment Pointer (B14) */ 98 #define PT_SP PT_B15 /* Stack Pointer (B15) */ 99 100 #ifndef __ASSEMBLY__ 101 102 #ifdef _BIG_ENDIAN 103 #define REG_PAIR(odd, even) unsigned long odd; unsigned long even 104 #else 105 #define REG_PAIR(odd, even) unsigned long even; unsigned long odd 106 #endif 107 108 /* 109 * this struct defines the way the registers are stored on the 110 * stack during a system call. fields defined with REG_PAIR 111 * are saved and restored using double-word memory operations 112 * which means the word ordering of the pair depends on endianess. 113 */ 114 struct pt_regs { 115 REG_PAIR(tsr, orig_a4); 116 REG_PAIR(rilc, ilc); 117 REG_PAIR(pc, csr); 118 119 REG_PAIR(b17, b16); 120 REG_PAIR(b19, b18); 121 REG_PAIR(b21, b20); 122 REG_PAIR(b23, b22); 123 REG_PAIR(b25, b24); 124 REG_PAIR(b27, b26); 125 REG_PAIR(b29, b28); 126 REG_PAIR(b31, b30); 127 128 REG_PAIR(b1, b0); 129 REG_PAIR(b3, b2); 130 REG_PAIR(b5, b4); 131 REG_PAIR(b7, b6); 132 REG_PAIR(b9, b8); 133 REG_PAIR(b11, b10); 134 REG_PAIR(b13, b12); 135 136 REG_PAIR(a17, a16); 137 REG_PAIR(a19, a18); 138 REG_PAIR(a21, a20); 139 REG_PAIR(a23, a22); 140 REG_PAIR(a25, a24); 141 REG_PAIR(a27, a26); 142 REG_PAIR(a29, a28); 143 REG_PAIR(a31, a30); 144 145 REG_PAIR(a1, a0); 146 REG_PAIR(a3, a2); 147 REG_PAIR(a5, a4); 148 REG_PAIR(a7, a6); 149 REG_PAIR(a9, a8); 150 REG_PAIR(a11, a10); 151 REG_PAIR(a13, a12); 152 153 REG_PAIR(a15, a14); 154 REG_PAIR(sp, dp); 155 }; 156 157 #ifdef __KERNEL__ 158 159 #include <linux/linkage.h> 160 161 #define user_mode(regs) ((((regs)->tsr) & 0x40) != 0) 162 163 #define instruction_pointer(regs) ((regs)->pc) 164 #define profile_pc(regs) instruction_pointer(regs) 165 #define user_stack_pointer(regs) ((regs)->sp) 166 167 extern void show_regs(struct pt_regs *); 168 169 extern asmlinkage unsigned long syscall_trace_entry(struct pt_regs *regs); 170 extern asmlinkage void syscall_trace_exit(struct pt_regs *regs); 171 172 #endif /* __KERNEL__ */ 173 #endif /* __ASSEMBLY__ */ 174 #endif /* _ASM_C6X_PTRACE_H */ 175