extable_fixup_types.h

 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 ambiguous 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/* unused, was: #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#define	EX_TYPE_ERETU			21
70
71#endif