1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 #ifndef _CRIS_ARCH_PTRACE_H 3 #define _CRIS_ARCH_PTRACE_H 4 5 /* Register numbers in the ptrace system call interface */ 6 7 #define PT_ORIG_R10 0 8 #define PT_R0 1 9 #define PT_R1 2 10 #define PT_R2 3 11 #define PT_R3 4 12 #define PT_R4 5 13 #define PT_R5 6 14 #define PT_R6 7 15 #define PT_R7 8 16 #define PT_R8 9 17 #define PT_R9 10 18 #define PT_R10 11 19 #define PT_R11 12 20 #define PT_R12 13 21 #define PT_R13 14 22 #define PT_ACR 15 23 #define PT_SRS 16 24 #define PT_MOF 17 25 #define PT_SPC 18 26 #define PT_CCS 19 27 #define PT_SRP 20 28 #define PT_ERP 21 /* This is actually the debugged process' PC */ 29 #define PT_EXS 22 30 #define PT_EDA 23 31 #define PT_USP 24 /* special case - USP is not in the pt_regs */ 32 #define PT_PPC 25 /* special case - pseudo PC */ 33 #define PT_BP 26 /* Base number for BP registers. */ 34 #define PT_BP_CTRL 26 /* BP control register. */ 35 #define PT_MAX 40 36 37 /* Condition code bit numbers. */ 38 #define C_CCS_BITNR 0 39 #define V_CCS_BITNR 1 40 #define Z_CCS_BITNR 2 41 #define N_CCS_BITNR 3 42 #define X_CCS_BITNR 4 43 #define I_CCS_BITNR 5 44 #define U_CCS_BITNR 6 45 #define P_CCS_BITNR 7 46 #define R_CCS_BITNR 8 47 #define S_CCS_BITNR 9 48 #define M_CCS_BITNR 30 49 #define Q_CCS_BITNR 31 50 #define CCS_SHIFT 10 /* Shift count for each level in CCS */ 51 52 /* pt_regs not only specifices the format in the user-struct during 53 * ptrace but is also the frame format used in the kernel prologue/epilogues 54 * themselves 55 */ 56 57 struct pt_regs { 58 unsigned long orig_r10; 59 /* pushed by movem r13, [sp] in SAVE_ALL. */ 60 unsigned long r0; 61 unsigned long r1; 62 unsigned long r2; 63 unsigned long r3; 64 unsigned long r4; 65 unsigned long r5; 66 unsigned long r6; 67 unsigned long r7; 68 unsigned long r8; 69 unsigned long r9; 70 unsigned long r10; 71 unsigned long r11; 72 unsigned long r12; 73 unsigned long r13; 74 unsigned long acr; 75 unsigned long srs; 76 unsigned long mof; 77 unsigned long spc; 78 unsigned long ccs; 79 unsigned long srp; 80 unsigned long erp; /* This is actually the debugged process' PC */ 81 /* For debugging purposes; saved only when needed. */ 82 unsigned long exs; 83 unsigned long eda; 84 }; 85 86 /* switch_stack is the extra stuff pushed onto the stack in _resume (entry.S) 87 * when doing a context-switch. it is used (apart from in resume) when a new 88 * thread is made and we need to make _resume (which is starting it for the 89 * first time) realise what is going on. 90 * 91 * Actually, the use is very close to the thread struct (TSS) in that both the 92 * switch_stack and the TSS are used to keep thread stuff when switching in 93 * _resume. 94 */ 95 96 struct switch_stack { 97 unsigned long r0; 98 unsigned long r1; 99 unsigned long r2; 100 unsigned long r3; 101 unsigned long r4; 102 unsigned long r5; 103 unsigned long r6; 104 unsigned long r7; 105 unsigned long r8; 106 unsigned long r9; 107 unsigned long return_ip; /* ip that _resume will return to */ 108 }; 109 110 #ifdef __KERNEL__ 111 112 #define arch_has_single_step() (1) 113 #define user_mode(regs) (((regs)->ccs & (1 << (U_CCS_BITNR + CCS_SHIFT))) != 0) 114 #define instruction_pointer(regs) ((regs)->erp) 115 #define profile_pc(regs) instruction_pointer(regs) 116 117 #endif /* __KERNEL__ */ 118 119 #endif 120