2 * Copyright (C) 2010 Tobias Klauser <tklauser@distanz.ch>
3 * Copyright (C) 2004 Microtronix Datacom Ltd
5 * based on m68k asm/processor.h
7 * This file is subject to the terms and conditions of the GNU General Public
8 * License. See the file "COPYING" in the main directory of this archive
12 #ifndef _UAPI_ASM_NIOS2_PTRACE_H
13 #define _UAPI_ASM_NIOS2_PTRACE_H
18 * Register numbers used by 'ptrace' system call interface.
54 /* Control registers */
57 #define PTR_ESTATUS 34
58 #define PTR_BSTATUS 35
59 #define PTR_IENABLE 36
60 #define PTR_IPENDING 37
64 #define PTR_PTEADDR 41
66 #define PTR_TLBMISC 43
68 #define NUM_PTRACE_REG (PTR_TLBMISC + 1)
70 /* this struct defines the way the registers are stored on the
71 stack during a system call.
73 There is a fake_regs in setup.c that has to match pt_regs.*/
76 unsigned long r8; /* r8-r15 Caller-saved GP registers */
84 unsigned long r1; /* Assembler temporary */
85 unsigned long r2; /* Retval LS 32bits */
86 unsigned long r3; /* Retval MS 32bits */
87 unsigned long r4; /* r4-r7 Register arguments */
91 unsigned long orig_r2; /* Copy of r2 ?? */
92 unsigned long ra; /* Return address */
93 unsigned long fp; /* Frame pointer */
94 unsigned long sp; /* Stack pointer */
95 unsigned long gp; /* Global pointer */
96 unsigned long estatus;
97 unsigned long ea; /* Exception return address (pc) */
98 unsigned long orig_r7;
102 * This is the extended stack used by signal handlers and the context
103 * switcher: it's pushed after the normal "struct pt_regs".
105 struct switch_stack {
106 unsigned long r16; /* r16-r23 Callee-saved GP registers */
119 #endif /* __ASSEMBLY__ */
120 #endif /* _UAPI_ASM_NIOS2_PTRACE_H */