| /* |
| * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| * Amit Bhor, Sameer Dhavale: Codito Technologies 2004 |
| */ |
| |
| #ifndef __ASM_ARC_PTRACE_H |
| #define __ASM_ARC_PTRACE_H |
| |
| #ifdef __KERNEL__ |
| |
| #ifndef __ASSEMBLY__ |
| |
| /* THE pt_regs: Defines how regs are saved during entry into kernel */ |
| |
| struct pt_regs { |
| /* |
| * 1 word gutter after reg-file has been saved |
| * Technically not needed, Since SP always points to a "full" location |
| * (vs. "empty"). But pt_regs is shared with tools.... |
| */ |
| long res; |
| |
| /* Real registers */ |
| long bta; /* bta_l1, bta_l2, erbta */ |
| long lp_start; |
| long lp_end; |
| long lp_count; |
| long status32; /* status32_l1, status32_l2, erstatus */ |
| long ret; /* ilink1, ilink2 or eret */ |
| long blink; |
| long fp; |
| long r26; /* gp */ |
| long r12; |
| long r11; |
| long r10; |
| long r9; |
| long r8; |
| long r7; |
| long r6; |
| long r5; |
| long r4; |
| long r3; |
| long r2; |
| long r1; |
| long r0; |
| long sp; /* user/kernel sp depending on where we came from */ |
| long orig_r0; |
| long orig_r8; /*to distinguish bet excp, sys call, int1 or int2 */ |
| }; |
| |
| /* Callee saved registers - need to be saved only when you are scheduled out */ |
| |
| struct callee_regs { |
| long res; /* Again this is not needed */ |
| long r25; |
| long r24; |
| long r23; |
| long r22; |
| long r21; |
| long r20; |
| long r19; |
| long r18; |
| long r17; |
| long r16; |
| long r15; |
| long r14; |
| long r13; |
| }; |
| |
| #define instruction_pointer(regs) ((regs)->ret) |
| #define profile_pc(regs) instruction_pointer(regs) |
| |
| /* return 1 if user mode or 0 if kernel mode */ |
| #define user_mode(regs) (regs->status32 & STATUS_U_MASK) |
| |
| #define user_stack_pointer(regs)\ |
| ({ unsigned int sp; \ |
| if (user_mode(regs)) \ |
| sp = (regs)->sp;\ |
| else \ |
| sp = -1; \ |
| sp; \ |
| }) |
| #endif /* !__ASSEMBLY__ */ |
| |
| #endif /* __KERNEL__ */ |
| |
| #ifndef __ASSEMBLY__ |
| /* |
| * Userspace ABI: Register state needed by |
| * -ptrace (gdbserver) |
| * -sigcontext (SA_SIGNINFO signal frame) |
| * |
| * This is to decouple pt_regs from user-space ABI, to be able to change it |
| * w/o affecting the ABI. |
| * Although the layout (initial padding) is similar to pt_regs to have some |
| * optimizations when copying pt_regs to/from user_regs_struct. |
| * |
| * Also, sigcontext only care about the scratch regs as that is what we really |
| * save/restore for signal handling. |
| */ |
| struct user_regs_struct { |
| |
| struct scratch { |
| long pad; |
| long bta, lp_start, lp_end, lp_count; |
| long status32, ret, blink, fp, gp; |
| long r12, r11, r10, r9, r8, r7, r6, r5, r4, r3, r2, r1, r0; |
| long sp; |
| } scratch; |
| struct callee { |
| long pad; |
| long r25, r24, r23, r22, r21, r20; |
| long r19, r18, r17, r16, r15, r14, r13; |
| } callee; |
| long efa; /* break pt addr, for break points in delay slots */ |
| long stop_pc; /* give dbg stop_pc directly after checking orig_r8 */ |
| }; |
| #endif /* !__ASSEMBLY__ */ |
| |
| #endif /* __ASM_PTRACE_H */ |