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linux/arch/unicore32/include/asm/ptrace.h

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unicore32 additional architecture files: ptrace handling This patch adds ptrace support. Changed from previous version: 1. disable arch_has_single_step and remove single-step instruction handler 2. add 'Ross Biro 1/23/92' contributor information 3. clean unused codes Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn> Acked-by: Arnd Bergmann <arnd@arndb.de>
2011-01-15 03:21:56 -07:00
/*
* linux/arch/unicore32/include/asm/ptrace.h
*
* Code specific to PKUnity SoC and UniCore ISA
*
* Copyright (C) 2001-2010 GUAN Xue-tao
*
* 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.
*/
#ifndef __UNICORE_PTRACE_H__
#define __UNICORE_PTRACE_H__
UAPI: (Scripted) Disintegrate arch/unicore32/include/asm Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
2012-10-09 01:47:48 -07:00
#include <uapi/asm/ptrace.h>
unicore32 additional architecture files: ptrace handling This patch adds ptrace support. Changed from previous version: 1. disable arch_has_single_step and remove single-step instruction handler 2. add 'Ross Biro 1/23/92' contributor information 3. clean unused codes Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn> Acked-by: Arnd Bergmann <arnd@arndb.de>
2011-01-15 03:21:56 -07:00
#ifndef __ASSEMBLY__
#define user_mode(regs) \
(processor_mode(regs) == USER_MODE)
#define processor_mode(regs) \
((regs)->UCreg_asr & MODE_MASK)
#define interrupts_enabled(regs) \
(!((regs)->UCreg_asr & PSR_I_BIT))
#define fast_interrupts_enabled(regs) \
(!((regs)->UCreg_asr & PSR_R_BIT))
/* Are the current registers suitable for user mode?
* (used to maintain security in signal handlers)
*/
static inline int valid_user_regs(struct pt_regs *regs)
{
unsigned long mode = regs->UCreg_asr & MODE_MASK;
/*
* Always clear the R (REAL) bits
*/
regs->UCreg_asr &= ~(PSR_R_BIT);
if ((regs->UCreg_asr & PSR_I_BIT) == 0) {
if (mode == USER_MODE)
return 1;
}
/*
* Force ASR to something logical...
*/
regs->UCreg_asr &= PSR_f | USER_MODE;
return 0;
}
#define instruction_pointer(regs) ((regs)->UCreg_pc)
missing user_stack_pointer() instances for the architectures that have usp in pt_regs and do not have user_stack_pointer() already defined. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-12-13 23:50:19 -07:00
#define user_stack_pointer(regs) ((regs)->UCreg_sp)
unicore32 additional architecture files: ptrace handling This patch adds ptrace support. Changed from previous version: 1. disable arch_has_single_step and remove single-step instruction handler 2. add 'Ross Biro 1/23/92' contributor information 3. clean unused codes Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn> Acked-by: Arnd Bergmann <arnd@arndb.de>
2011-01-15 03:21:56 -07:00
#endif /* __ASSEMBLY__ */
#endif
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