1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_X86_EXTABLE_FIXUP_TYPES_H
3#define _ASM_X86_EXTABLE_FIXUP_TYPES_H
4
5/*
6 * Our IMM is signed, as such it must live at the top end of the word. Also,
7 * since C99 hex constants are of ambigious type, force cast the mask to 'int'
8 * so that FIELD_GET() will DTRT and sign extend the value when it extracts it.
9 */
10#define EX_DATA_TYPE_MASK ((int)0x000000FF)
11#define EX_DATA_REG_MASK ((int)0x00000F00)
12#define EX_DATA_FLAG_MASK ((int)0x0000F000)
13#define EX_DATA_IMM_MASK ((int)0xFFFF0000)
14
15#define EX_DATA_REG_SHIFT 8
16#define EX_DATA_FLAG_SHIFT 12
17#define EX_DATA_IMM_SHIFT 16
18
19#define EX_DATA_REG(reg) ((reg) << EX_DATA_REG_SHIFT)
20#define EX_DATA_FLAG(flag) ((flag) << EX_DATA_FLAG_SHIFT)
21#define EX_DATA_IMM(imm) ((imm) << EX_DATA_IMM_SHIFT)
22
23/* segment regs */
24#define EX_REG_DS EX_DATA_REG(8)
25#define EX_REG_ES EX_DATA_REG(9)
26#define EX_REG_FS EX_DATA_REG(10)
27#define EX_REG_GS EX_DATA_REG(11)
28
29/* flags */
30#define EX_FLAG_CLEAR_AX EX_DATA_FLAG(1)
31#define EX_FLAG_CLEAR_DX EX_DATA_FLAG(2)
32#define EX_FLAG_CLEAR_AX_DX EX_DATA_FLAG(3)
33
34/* types */
35#define EX_TYPE_NONE 0
36#define EX_TYPE_DEFAULT 1
37#define EX_TYPE_FAULT 2
38#define EX_TYPE_UACCESS 3
39#define EX_TYPE_COPY 4
40#define EX_TYPE_CLEAR_FS 5
41#define EX_TYPE_FPU_RESTORE 6
42#define EX_TYPE_BPF 7
43#define EX_TYPE_WRMSR 8
44#define EX_TYPE_RDMSR 9
45#define EX_TYPE_WRMSR_SAFE 10 /* reg := -EIO */
46#define EX_TYPE_RDMSR_SAFE 11 /* reg := -EIO */
47#define EX_TYPE_WRMSR_IN_MCE 12
48#define EX_TYPE_RDMSR_IN_MCE 13
49#define EX_TYPE_DEFAULT_MCE_SAFE 14
50#define EX_TYPE_FAULT_MCE_SAFE 15
51
52#define EX_TYPE_POP_REG 16 /* sp += sizeof(long) */
53#define EX_TYPE_POP_ZERO (EX_TYPE_POP_REG | EX_DATA_IMM(0))
54
55#define EX_TYPE_IMM_REG 17 /* reg := (long)imm */
56#define EX_TYPE_EFAULT_REG (EX_TYPE_IMM_REG | EX_DATA_IMM(-EFAULT))
57#define EX_TYPE_ZERO_REG (EX_TYPE_IMM_REG | EX_DATA_IMM(0))
58#define EX_TYPE_ONE_REG (EX_TYPE_IMM_REG | EX_DATA_IMM(1))
59
60#define EX_TYPE_FAULT_SGX 18
61
62#define EX_TYPE_UCOPY_LEN 19 /* cx := reg + imm*cx */
63#define EX_TYPE_UCOPY_LEN1 (EX_TYPE_UCOPY_LEN | EX_DATA_IMM(1))
64#define EX_TYPE_UCOPY_LEN4 (EX_TYPE_UCOPY_LEN | EX_DATA_IMM(4))
65#define EX_TYPE_UCOPY_LEN8 (EX_TYPE_UCOPY_LEN | EX_DATA_IMM(8))
66
67#define EX_TYPE_ZEROPAD 20 /* longword load with zeropad on fault */
68
69#endif
70

source code of linux/arch/x86/include/asm/extable_fixup_types.h