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/*
* include/asm-xtensa/ptrace.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.
*
* Copyright (C) 2001 - 2005 Tensilica Inc.
*/
#ifndef _XTENSA_PTRACE_H
#define _XTENSA_PTRACE_H
#include <uapi/asm/ptrace.h>
#ifndef __ASSEMBLY__
#include <asm/coprocessor.h>
/*
* This struct defines the way the registers are stored on the
* kernel stack during a system call or other kernel entry.
*/
struct pt_regs {
unsigned long pc; /* 4 */
unsigned long ps; /* 8 */
unsigned long depc; /* 12 */
unsigned long exccause; /* 16 */
unsigned long excvaddr; /* 20 */
unsigned long debugcause; /* 24 */
unsigned long wmask; /* 28 */
unsigned long lbeg; /* 32 */
unsigned long lend; /* 36 */
unsigned long lcount; /* 40 */
unsigned long sar; /* 44 */
unsigned long windowbase; /* 48 */
unsigned long windowstart; /* 52 */
unsigned long syscall; /* 56 */
unsigned long icountlevel; /* 60 */
unsigned long scompare1; /* 64 */
unsigned long threadptr; /* 68 */
/* Additional configurable registers that are used by the compiler. */
xtregs_opt_t xtregs_opt;
/* Make sure the areg field is 16 bytes aligned. */
int align[0] __attribute__ ((aligned(16)));
/* current register frame.
* Note: The ESF for kernel exceptions ends after 16 registers!
*/
unsigned long areg[16];
};
#include <variant/core.h>
# define arch_has_single_step() (1)
# define task_pt_regs(tsk) ((struct pt_regs*) \
(task_stack_page(tsk) + KERNEL_STACK_SIZE - (XCHAL_NUM_AREGS-16)*4) - 1)
# define user_mode(regs) (((regs)->ps & 0x00000020)!=0)
# define instruction_pointer(regs) ((regs)->pc)
# define return_pointer(regs) (MAKE_PC_FROM_RA((regs)->areg[0], \
(regs)->areg[1]))
# ifndef CONFIG_SMP
# define profile_pc(regs) instruction_pointer(regs)
# else
# define profile_pc(regs) \
({ \
in_lock_functions(instruction_pointer(regs)) ? \
return_pointer(regs) : instruction_pointer(regs); \
})
# endif
#define user_stack_pointer(regs) ((regs)->areg[1])
#else /* __ASSEMBLY__ */
# include <asm/asm-offsets.h>
#define PT_REGS_OFFSET (KERNEL_STACK_SIZE - PT_USER_SIZE)
#endif /* !__ASSEMBLY__ */
#endif /* _XTENSA_PTRACE_H */