/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_EXTABLE_FIXUP_TYPES_H
#define _ASM_X86_EXTABLE_FIXUP_TYPES_H

/*
 * Our IMM is signed, as such it must live at the top end of the word. Also,
 * since C99 hex constants are of ambiguous type, force cast the mask to 'int'
 * so that FIELD_GET() will DTRT and sign extend the value when it extracts it.
 */
#define EX_DATA_TYPE_MASK               ((int)0x000000FF)
#define EX_DATA_REG_MASK                ((int)0x00000F00)
#define EX_DATA_FLAG_MASK               ((int)0x0000F000)
#define EX_DATA_IMM_MASK                ((int)0xFFFF0000)

#define EX_DATA_REG_SHIFT               8
#define EX_DATA_FLAG_SHIFT              12
#define EX_DATA_IMM_SHIFT               16

#define EX_DATA_REG(reg)                ((reg) << EX_DATA_REG_SHIFT)
#define EX_DATA_FLAG(flag)              ((flag) << EX_DATA_FLAG_SHIFT)
#define EX_DATA_IMM(imm)                ((imm) << EX_DATA_IMM_SHIFT)

/* segment regs */
#define EX_REG_DS                       EX_DATA_REG(8)
#define EX_REG_ES                       EX_DATA_REG(9)
#define EX_REG_FS                       EX_DATA_REG(10)
#define EX_REG_GS                       EX_DATA_REG(11)

/* flags */
#define EX_FLAG_CLEAR_AX                EX_DATA_FLAG(1)
#define EX_FLAG_CLEAR_DX                EX_DATA_FLAG(2)
#define EX_FLAG_CLEAR_AX_DX             EX_DATA_FLAG(3)

/* types */
#define EX_TYPE_NONE                     0
#define EX_TYPE_DEFAULT                  1
#define EX_TYPE_FAULT                    2
#define EX_TYPE_UACCESS                  3
/* unused, was: #define EX_TYPE_COPY     4 */
#define EX_TYPE_CLEAR_FS                 5
#define EX_TYPE_FPU_RESTORE              6
#define EX_TYPE_BPF                      7
#define EX_TYPE_WRMSR                    8
#define EX_TYPE_RDMSR                    9
#define EX_TYPE_WRMSR_SAFE              10 /* reg := -EIO */
#define EX_TYPE_RDMSR_SAFE              11 /* reg := -EIO */
#define EX_TYPE_WRMSR_IN_MCE            12
#define EX_TYPE_RDMSR_IN_MCE            13
#define EX_TYPE_DEFAULT_MCE_SAFE        14
#define EX_TYPE_FAULT_MCE_SAFE          15

#define EX_TYPE_POP_REG                 16 /* sp += sizeof(long) */
#define EX_TYPE_POP_ZERO                (EX_TYPE_POP_REG | EX_DATA_IMM(0))

#define EX_TYPE_IMM_REG                 17 /* reg := (long)imm */
#define EX_TYPE_EFAULT_REG              (EX_TYPE_IMM_REG | EX_DATA_IMM(-EFAULT))
#define EX_TYPE_ZERO_REG                (EX_TYPE_IMM_REG | EX_DATA_IMM(0))
#define EX_TYPE_ONE_REG                 (EX_TYPE_IMM_REG | EX_DATA_IMM(1))

#define EX_TYPE_FAULT_SGX               18

#define EX_TYPE_UCOPY_LEN               19 /* cx := reg + imm*cx */
#define EX_TYPE_UCOPY_LEN1              (EX_TYPE_UCOPY_LEN | EX_DATA_IMM(1))
#define EX_TYPE_UCOPY_LEN4              (EX_TYPE_UCOPY_LEN | EX_DATA_IMM(4))
#define EX_TYPE_UCOPY_LEN8              (EX_TYPE_UCOPY_LEN | EX_DATA_IMM(8))

#define EX_TYPE_ZEROPAD                 20 /* longword load with zeropad on fault */

#define EX_TYPE_ERETU                   21

#endif