/* * Copyright (C) 2013 Altera Corporation * Copyright (C) 2010 Tobias Klauser <tklauser@distanz.ch> * Copyright (C) 2004 Microtronix Datacom Ltd * * based on m68k asm/processor.h * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. */ #ifndef _ASM_NIOS2_PTRACE_H #define _ASM_NIOS2_PTRACE_H #include <uapi/asm/ptrace.h> /* This struct defines the way the registers are stored on the stack during a system call. */ #ifndef __ASSEMBLY__ struct pt_regs { unsigned long r8; /* r8-r15 Caller-saved GP registers */ unsigned long r9; unsigned long r10; unsigned long r11; unsigned long r12; unsigned long r13; unsigned long r14; unsigned long r15; unsigned long r1; /* Assembler temporary */ unsigned long r2; /* Retval LS 32bits */ unsigned long r3; /* Retval MS 32bits */ unsigned long r4; /* r4-r7 Register arguments */ unsigned long r5; unsigned long r6; unsigned long r7; unsigned long orig_r2; /* Copy of r2 ?? */ unsigned long ra; /* Return address */ unsigned long fp; /* Frame pointer */ unsigned long sp; /* Stack pointer */ unsigned long gp; /* Global pointer */ unsigned long estatus; unsigned long ea; /* Exception return address (pc) */ unsigned long orig_r7; }; /* * This is the extended stack used by signal handlers and the context * switcher: it's pushed after the normal "struct pt_regs". */ struct switch_stack { unsigned long r16; /* r16-r23 Callee-saved GP registers */ unsigned long r17; unsigned long r18; unsigned long r19; unsigned long r20; unsigned long r21; unsigned long r22; unsigned long r23; unsigned long fp; unsigned long gp; unsigned long ra; }; #define user_mode(regs) (((regs)->estatus & ESTATUS_EU)) #define instruction_pointer(regs) ((regs)->ra) #define profile_pc(regs) instruction_pointer(regs) #define user_stack_pointer(regs) ((regs)->sp) extern void show_regs(struct pt_regs *); #define current_pt_regs() \ ((struct pt_regs *)((unsigned long)current_thread_info() + THREAD_SIZE)\ - 1) #define force_successful_syscall_return() (current_pt_regs()->orig_r2 = -1) int do_syscall_trace_enter(void); void do_syscall_trace_exit(void); #endif /* __ASSEMBLY__ */ #endif /* _ASM_NIOS2_PTRACE_H */