1 /* 2 * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 as 6 * published by the Free Software Foundation. 7 * 8 * Amit Bhor, Sameer Dhavale: Codito Technologies 2004 9 */ 10 11 #ifndef _UAPI__ASM_ARC_PTRACE_H 12 #define _UAPI__ASM_ARC_PTRACE_H 13 14 #define PTRACE_GET_THREAD_AREA 25 15 16 #ifndef __ASSEMBLY__ 17 /* 18 * Userspace ABI: Register state needed by 19 * -ptrace (gdbserver) 20 * -sigcontext (SA_SIGNINFO signal frame) 21 * 22 * This is to decouple pt_regs from user-space ABI, to be able to change it 23 * w/o affecting the ABI. 24 * 25 * The intermediate pad,pad2 are relics of initial layout based on pt_regs 26 * for optimizations when copying pt_regs to/from user_regs_struct. 27 * We no longer need them, but can't be changed as they are part of ABI now. 28 * 29 * Also, sigcontext only care about the scratch regs as that is what we really 30 * save/restore for signal handling. However gdb also uses the same struct 31 * hence callee regs need to be in there too. 32 */ 33 struct user_regs_struct { 34 35 unsigned long pad; 36 struct { 37 unsigned long bta, lp_start, lp_end, lp_count; 38 unsigned long status32, ret, blink, fp, gp; 39 unsigned long r12, r11, r10, r9, r8, r7, r6, r5, r4, r3, r2, r1, r0; 40 unsigned long sp; 41 } scratch; 42 unsigned long pad2; 43 struct { 44 unsigned long r25, r24, r23, r22, r21, r20; 45 unsigned long r19, r18, r17, r16, r15, r14, r13; 46 } callee; 47 unsigned long efa; /* break pt addr, for break points in delay slots */ 48 unsigned long stop_pc; /* give dbg stop_pc after ensuring brkpt trap */ 49 }; 50 #endif /* !__ASSEMBLY__ */ 51 52 #endif /* _UAPI__ASM_ARC_PTRACE_H */ 53