1bd0950835
Use the generic ptrace_resume code for PTRACE_SYSCALL, PTRACE_CONT, PTRACE_KILL and PTRACE_SINGLESTEP. This implies defining arch_has_single_step in <asm/ptrace.h> and implementing the user_enable_single_step and user_disable_single_step functions, which also causes the breakpoint information to be cleared on fork, which could be considered a bug fix. Also the TIF_SYSCALL_TRACE thread flag is now cleared on PTRACE_KILL which it previously wasn't which is consistent with all architectures using the modern ptrace code. XXX: I'm not sure arch_has_single_step() is placed in the exactly correct location, please verify in which of the ptrace headers it should really be. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Roland McGrath <roland@redhat.com> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
/*
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* Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
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* Licensed under the GPL
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*/
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#ifndef __UM_PTRACE_GENERIC_H
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#define __UM_PTRACE_GENERIC_H
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#ifndef __ASSEMBLY__
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#include <asm/ptrace-abi.h>
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#include <asm/user.h>
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#include "sysdep/ptrace.h"
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struct pt_regs {
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struct uml_pt_regs regs;
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};
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#define arch_has_single_step() (1)
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#define EMPTY_REGS { .regs = EMPTY_UML_PT_REGS }
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#define PT_REGS_IP(r) UPT_IP(&(r)->regs)
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#define PT_REGS_SP(r) UPT_SP(&(r)->regs)
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#define PT_REG(r, reg) UPT_REG(&(r)->regs, reg)
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#define PT_REGS_SET(r, reg, val) UPT_SET(&(r)->regs, reg, val)
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#define PT_REGS_SET_SYSCALL_RETURN(r, res) \
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UPT_SET_SYSCALL_RETURN(&(r)->regs, res)
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#define PT_REGS_RESTART_SYSCALL(r) UPT_RESTART_SYSCALL(&(r)->regs)
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#define PT_REGS_SYSCALL_NR(r) UPT_SYSCALL_NR(&(r)->regs)
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#define PT_REGS_SC(r) UPT_SC(&(r)->regs)
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#define instruction_pointer(regs) PT_REGS_IP(regs)
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struct task_struct;
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extern long subarch_ptrace(struct task_struct *child, long request, long addr,
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long data);
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extern unsigned long getreg(struct task_struct *child, int regno);
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extern int putreg(struct task_struct *child, int regno, unsigned long value);
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extern int get_fpregs(struct user_i387_struct __user *buf,
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struct task_struct *child);
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extern int set_fpregs(struct user_i387_struct __user *buf,
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struct task_struct *child);
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extern void show_regs(struct pt_regs *regs);
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extern int arch_copy_tls(struct task_struct *new);
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extern void clear_flushed_tls(struct task_struct *task);
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#endif
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#endif
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