1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
3 * Copyright 2010 Tilera Corporation. All Rights Reserved.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation, version 2.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
12 * NON INFRINGEMENT. See the GNU General Public License for
16 #ifndef _UAPI_ASM_TILE_PTRACE_H
17 #define _UAPI_ASM_TILE_PTRACE_H
19 #include <arch/chip.h>
22 /* These must match struct pt_regs, below. */
23 #if CHIP_WORD_SIZE() == 32
24 #define PTREGS_OFFSET_REG(n) ((n)*4)
26 #define PTREGS_OFFSET_REG(n) ((n)*8)
28 #define PTREGS_OFFSET_BASE 0
29 #define PTREGS_OFFSET_TP PTREGS_OFFSET_REG(53)
30 #define PTREGS_OFFSET_SP PTREGS_OFFSET_REG(54)
31 #define PTREGS_OFFSET_LR PTREGS_OFFSET_REG(55)
32 #define PTREGS_NR_GPRS 56
33 #define PTREGS_OFFSET_PC PTREGS_OFFSET_REG(56)
34 #define PTREGS_OFFSET_EX1 PTREGS_OFFSET_REG(57)
35 #define PTREGS_OFFSET_FAULTNUM PTREGS_OFFSET_REG(58)
36 #define PTREGS_OFFSET_ORIG_R0 PTREGS_OFFSET_REG(59)
37 #define PTREGS_OFFSET_FLAGS PTREGS_OFFSET_REG(60)
38 #if CHIP_HAS_CMPEXCH()
39 #define PTREGS_OFFSET_CMPEXCH PTREGS_OFFSET_REG(61)
41 #define PTREGS_SIZE PTREGS_OFFSET_REG(64)
47 /* Provide appropriate length type to userspace regardless of -m32/-m64. */
48 typedef uint_reg_t pt_reg_t;
52 * This struct defines the way the registers are stored on the stack during a
53 * system call or exception. "struct sigcontext" has the same shape.
57 /* Saved main processor registers; 56..63 are special. */
61 pt_reg_t tp; /* aliases regs[TREG_TP] */
62 pt_reg_t sp; /* aliases regs[TREG_SP] */
63 pt_reg_t lr; /* aliases regs[TREG_LR] */
67 /* Saved special registers. */
68 pt_reg_t pc; /* stored in EX_CONTEXT_K_0 */
69 pt_reg_t ex1; /* stored in EX_CONTEXT_K_1 (PL and ICS bit) */
70 pt_reg_t faultnum; /* fault number (INT_SWINT_1 for syscall) */
71 pt_reg_t orig_r0; /* r0 at syscall entry, else zero */
72 pt_reg_t flags; /* flags (see below) */
73 #if !CHIP_HAS_CMPEXCH()
76 pt_reg_t cmpexch; /* value of CMPEXCH_VALUE SPR at interrupt */
81 #endif /* __ASSEMBLY__ */
83 #define PTRACE_GETREGS 12
84 #define PTRACE_SETREGS 13
85 #define PTRACE_GETFPREGS 14
86 #define PTRACE_SETFPREGS 15
88 /* Support TILE-specific ptrace options, with events starting at 16. */
89 #define PTRACE_EVENT_MIGRATE 16
90 #define PTRACE_O_TRACEMIGRATE (1 << PTRACE_EVENT_MIGRATE)
93 * Flag bits in pt_regs.flags that are part of the ptrace API.
94 * We start our numbering higher up to avoid confusion with the
95 * non-ABI kernel-internal values that use the low 16 bits.
97 #define PT_FLAGS_COMPAT 0x10000 /* process is an -m32 compat process */
99 #endif /* _UAPI_ASM_TILE_PTRACE_H */