2 * include/asm-xtensa/ptrace.h
4 * This file is subject to the terms and conditions of the GNU General Public
5 * License. See the file "COPYING" in the main directory of this archive
8 * Copyright (C) 2001 - 2005 Tensilica Inc.
10 #ifndef _XTENSA_PTRACE_H
11 #define _XTENSA_PTRACE_H
13 #include <uapi/asm/ptrace.h>
18 #include <asm/coprocessor.h>
21 * This struct defines the way the registers are stored on the
22 * kernel stack during a system call or other kernel entry.
25 unsigned long pc; /* 4 */
26 unsigned long ps; /* 8 */
27 unsigned long depc; /* 12 */
28 unsigned long exccause; /* 16 */
29 unsigned long excvaddr; /* 20 */
30 unsigned long debugcause; /* 24 */
31 unsigned long wmask; /* 28 */
32 unsigned long lbeg; /* 32 */
33 unsigned long lend; /* 36 */
34 unsigned long lcount; /* 40 */
35 unsigned long sar; /* 44 */
36 unsigned long windowbase; /* 48 */
37 unsigned long windowstart; /* 52 */
38 unsigned long syscall; /* 56 */
39 unsigned long icountlevel; /* 60 */
40 int reserved[1]; /* 64 */
42 /* Additional configurable registers that are used by the compiler. */
43 xtregs_opt_t xtregs_opt;
45 /* Make sure the areg field is 16 bytes aligned. */
46 int align[0] __attribute__ ((aligned(16)));
48 /* current register frame.
49 * Note: The ESF for kernel exceptions ends after 16 registers!
51 unsigned long areg[16]; /* 128 (64) */
54 #include <variant/core.h>
56 # define arch_has_single_step() (1)
57 # define task_pt_regs(tsk) ((struct pt_regs*) \
58 (task_stack_page(tsk) + KERNEL_STACK_SIZE - (XCHAL_NUM_AREGS-16)*4) - 1)
59 # define user_mode(regs) (((regs)->ps & 0x00000020)!=0)
60 # define instruction_pointer(regs) ((regs)->pc)
63 # define profile_pc(regs) instruction_pointer(regs)
66 #else /* __ASSEMBLY__ */
68 # include <asm/asm-offsets.h>
69 #define PT_REGS_OFFSET (KERNEL_STACK_SIZE - PT_USER_SIZE)
71 #endif /* !__ASSEMBLY__ */
73 #endif /* _XTENSA_PTRACE_H */