tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright 2010 Tilera Corporation. All Rights Reserved.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation, version 2.
7 *
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
11 * NON INFRINGEMENT. See the GNU General Public License for
12 * more details.
13 */
14
15#ifndef _UAPI_ASM_TILE_PTRACE_H
16#define _UAPI_ASM_TILE_PTRACE_H
17
18#include <arch/chip.h>
19#include <arch/abi.h>
20
21/* These must match struct pt_regs, below. */
22#if CHIP_WORD_SIZE() == 32
23#define PTREGS_OFFSET_REG(n) ((n)*4)
24#else
25#define PTREGS_OFFSET_REG(n) ((n)*8)
26#endif
27#define PTREGS_OFFSET_BASE 0
28#define PTREGS_OFFSET_TP PTREGS_OFFSET_REG(53)
29#define PTREGS_OFFSET_SP PTREGS_OFFSET_REG(54)
30#define PTREGS_OFFSET_LR PTREGS_OFFSET_REG(55)
31#define PTREGS_NR_GPRS 56
32#define PTREGS_OFFSET_PC PTREGS_OFFSET_REG(56)
33#define PTREGS_OFFSET_EX1 PTREGS_OFFSET_REG(57)
34#define PTREGS_OFFSET_FAULTNUM PTREGS_OFFSET_REG(58)
35#define PTREGS_OFFSET_ORIG_R0 PTREGS_OFFSET_REG(59)
36#define PTREGS_OFFSET_FLAGS PTREGS_OFFSET_REG(60)
37#if CHIP_HAS_CMPEXCH()
38#define PTREGS_OFFSET_CMPEXCH PTREGS_OFFSET_REG(61)
39#endif
40#define PTREGS_SIZE PTREGS_OFFSET_REG(64)
41
42
43#ifndef __ASSEMBLY__
44
45#ifndef __KERNEL__
46/* Provide appropriate length type to userspace regardless of -m32/-m64. */
47typedef uint_reg_t pt_reg_t;
48#endif
49
50/*
51 * This struct defines the way the registers are stored on the stack during a
52 * system call or exception. "struct sigcontext" has the same shape.
53 */
54struct pt_regs {
55 /* Saved main processor registers; 56..63 are special. */
56 /* tp, sp, and lr must immediately follow regs[] for aliasing. */
57 pt_reg_t regs[53];
58 pt_reg_t tp; /* aliases regs[TREG_TP] */
59 pt_reg_t sp; /* aliases regs[TREG_SP] */
60 pt_reg_t lr; /* aliases regs[TREG_LR] */
61
62 /* Saved special registers. */
63 pt_reg_t pc; /* stored in EX_CONTEXT_K_0 */
64 pt_reg_t ex1; /* stored in EX_CONTEXT_K_1 (PL and ICS bit) */
65 pt_reg_t faultnum; /* fault number (INT_SWINT_1 for syscall) */
66 pt_reg_t orig_r0; /* r0 at syscall entry, else zero */
67 pt_reg_t flags; /* flags (see below) */
68#if !CHIP_HAS_CMPEXCH()
69 pt_reg_t pad[3];
70#else
71 pt_reg_t cmpexch; /* value of CMPEXCH_VALUE SPR at interrupt */
72 pt_reg_t pad[2];
73#endif
74};
75
76#endif /* __ASSEMBLY__ */
77
78#define PTRACE_GETREGS 12
79#define PTRACE_SETREGS 13
80#define PTRACE_GETFPREGS 14
81#define PTRACE_SETFPREGS 15
82
83/* Support TILE-specific ptrace options, with events starting at 16. */
84#define PTRACE_EVENT_MIGRATE 16
85#define PTRACE_O_TRACEMIGRATE (1 << PTRACE_EVENT_MIGRATE)
86
87/*
88 * Flag bits in pt_regs.flags that are part of the ptrace API.
89 * We start our numbering higher up to avoid confusion with the
90 * non-ABI kernel-internal values that use the low 16 bits.
91 */
92#define PT_FLAGS_COMPAT 0x10000 /* process is an -m32 compat process */
93
94#endif /* _UAPI_ASM_TILE_PTRACE_H */