cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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fpswa.h (1925B)


      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _ASM_IA64_FPSWA_H
      3#define _ASM_IA64_FPSWA_H
      4
      5/*
      6 * Floating-point Software Assist
      7 *
      8 * Copyright (C) 1999 Intel Corporation.
      9 * Copyright (C) 1999 Asit Mallick <asit.k.mallick@intel.com>
     10 * Copyright (C) 1999 Goutham Rao <goutham.rao@intel.com>
     11 */
     12
     13typedef struct {
     14	/* 4 * 128 bits */
     15	unsigned long fp_lp[4*2];
     16} fp_state_low_preserved_t;
     17
     18typedef struct {
     19	/* 10 * 128 bits */
     20	unsigned long fp_lv[10 * 2];
     21} fp_state_low_volatile_t;
     22
     23typedef	struct {
     24	/* 16 * 128 bits */
     25	unsigned long fp_hp[16 * 2];
     26} fp_state_high_preserved_t;
     27
     28typedef struct {
     29	/* 96 * 128 bits */
     30	unsigned long fp_hv[96 * 2];
     31} fp_state_high_volatile_t;
     32
     33/**
     34 * floating point state to be passed to the FP emulation library by
     35 * the trap/fault handler
     36 */
     37typedef struct {
     38	unsigned long			bitmask_low64;
     39	unsigned long			bitmask_high64;
     40	fp_state_low_preserved_t	*fp_state_low_preserved;
     41	fp_state_low_volatile_t		*fp_state_low_volatile;
     42	fp_state_high_preserved_t	*fp_state_high_preserved;
     43	fp_state_high_volatile_t	*fp_state_high_volatile;
     44} fp_state_t;
     45
     46typedef struct {
     47	unsigned long status;
     48	unsigned long err0;
     49	unsigned long err1;
     50	unsigned long err2;
     51} fpswa_ret_t;
     52
     53/**
     54 * function header for the Floating Point software assist
     55 * library. This function is invoked by the Floating point software
     56 * assist trap/fault handler.
     57 */
     58typedef fpswa_ret_t (*efi_fpswa_t) (unsigned long trap_type, void *bundle, unsigned long *ipsr,
     59				    unsigned long *fsr, unsigned long *isr, unsigned long *preds,
     60				    unsigned long *ifs, fp_state_t *fp_state);
     61
     62/**
     63 * This is the FPSWA library interface as defined by EFI.  We need to pass a 
     64 * pointer to the interface itself on a call to the assist library
     65 */
     66typedef struct {
     67	unsigned int	 revision;
     68	unsigned int	 reserved;
     69	efi_fpswa_t	 fpswa;
     70} fpswa_interface_t;
     71
     72extern fpswa_interface_t *fpswa_interface;
     73
     74#endif /* _ASM_IA64_FPSWA_H */