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7c7fcf762e
Save the current exception frame pointer in the thread_info struct rather than in a global variable as the latter makes SMP tricky, especially when preemption is also enabled. This also replaces __frame with current_frame() and rearranges header file inclusions to make it all compile. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Akira Takeuchi <takeuchi.akr@jp.panasonic.com>
100 lines
2.5 KiB
C
100 lines
2.5 KiB
C
/* MN10300 Exception frame layout and ptrace constants
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*
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* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public Licence
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* as published by the Free Software Foundation; either version
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* 2 of the Licence, or (at your option) any later version.
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*/
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#ifndef _ASM_PTRACE_H
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#define _ASM_PTRACE_H
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#define PT_A3 0
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#define PT_A2 1
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#define PT_D3 2
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#define PT_D2 3
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#define PT_MCVF 4
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#define PT_MCRL 5
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#define PT_MCRH 6
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#define PT_MDRQ 7
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#define PT_E1 8
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#define PT_E0 9
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#define PT_E7 10
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#define PT_E6 11
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#define PT_E5 12
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#define PT_E4 13
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#define PT_E3 14
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#define PT_E2 15
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#define PT_SP 16
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#define PT_LAR 17
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#define PT_LIR 18
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#define PT_MDR 19
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#define PT_A1 20
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#define PT_A0 21
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#define PT_D1 22
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#define PT_D0 23
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#define PT_ORIG_D0 24
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#define PT_EPSW 25
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#define PT_PC 26
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#define NR_PTREGS 27
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/*
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* This defines the way registers are stored in the event of an exception
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* - the strange order is due to the MOVM instruction
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*/
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struct pt_regs {
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unsigned long a3; /* syscall arg 3 */
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unsigned long a2; /* syscall arg 4 */
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unsigned long d3; /* syscall arg 5 */
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unsigned long d2; /* syscall arg 6 */
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unsigned long mcvf;
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unsigned long mcrl;
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unsigned long mcrh;
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unsigned long mdrq;
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unsigned long e1;
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unsigned long e0;
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unsigned long e7;
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unsigned long e6;
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unsigned long e5;
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unsigned long e4;
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unsigned long e3;
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unsigned long e2;
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unsigned long sp;
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unsigned long lar;
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unsigned long lir;
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unsigned long mdr;
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unsigned long a1;
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unsigned long a0; /* syscall arg 1 */
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unsigned long d1; /* syscall arg 2 */
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unsigned long d0; /* syscall ret */
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struct pt_regs *next; /* next frame pointer */
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unsigned long orig_d0; /* syscall number */
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unsigned long epsw;
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unsigned long pc;
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};
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/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
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#define PTRACE_GETREGS 12
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#define PTRACE_SETREGS 13
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#define PTRACE_GETFPREGS 14
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#define PTRACE_SETFPREGS 15
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/* options set using PTRACE_SETOPTIONS */
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#define PTRACE_O_TRACESYSGOOD 0x00000001
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#ifdef __KERNEL__
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#define user_mode(regs) (((regs)->epsw & EPSW_nSL) == EPSW_nSL)
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#define instruction_pointer(regs) ((regs)->pc)
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#define user_stack_pointer(regs) ((regs)->sp)
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extern void show_regs(struct pt_regs *);
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#define arch_has_single_step() (1)
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#define profile_pc(regs) ((regs)->pc)
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#endif /* __KERNEL__ */
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#endif /* _ASM_PTRACE_H */
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