75 lines
1.9 KiB
C
75 lines
1.9 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_IA64_FPSWA_H
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#define _ASM_IA64_FPSWA_H
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/*
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* Floating-point Software Assist
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*
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* Copyright (C) 1999 Intel Corporation.
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* Copyright (C) 1999 Asit Mallick <asit.k.mallick@intel.com>
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* Copyright (C) 1999 Goutham Rao <goutham.rao@intel.com>
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*/
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typedef struct {
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/* 4 * 128 bits */
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unsigned long fp_lp[4*2];
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} fp_state_low_preserved_t;
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typedef struct {
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/* 10 * 128 bits */
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unsigned long fp_lv[10 * 2];
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} fp_state_low_volatile_t;
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typedef struct {
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/* 16 * 128 bits */
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unsigned long fp_hp[16 * 2];
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} fp_state_high_preserved_t;
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typedef struct {
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/* 96 * 128 bits */
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unsigned long fp_hv[96 * 2];
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} fp_state_high_volatile_t;
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/**
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* floating point state to be passed to the FP emulation library by
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* the trap/fault handler
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*/
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typedef struct {
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unsigned long bitmask_low64;
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unsigned long bitmask_high64;
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fp_state_low_preserved_t *fp_state_low_preserved;
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fp_state_low_volatile_t *fp_state_low_volatile;
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fp_state_high_preserved_t *fp_state_high_preserved;
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fp_state_high_volatile_t *fp_state_high_volatile;
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} fp_state_t;
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typedef struct {
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unsigned long status;
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unsigned long err0;
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unsigned long err1;
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unsigned long err2;
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} fpswa_ret_t;
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/**
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* function header for the Floating Point software assist
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* library. This function is invoked by the Floating point software
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* assist trap/fault handler.
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*/
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typedef fpswa_ret_t (*efi_fpswa_t) (unsigned long trap_type, void *bundle, unsigned long *ipsr,
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unsigned long *fsr, unsigned long *isr, unsigned long *preds,
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unsigned long *ifs, fp_state_t *fp_state);
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/**
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* This is the FPSWA library interface as defined by EFI. We need to pass a
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* pointer to the interface itself on a call to the assist library
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*/
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typedef struct {
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unsigned int revision;
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unsigned int reserved;
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efi_fpswa_t fpswa;
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} fpswa_interface_t;
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extern fpswa_interface_t *fpswa_interface;
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#endif /* _ASM_IA64_FPSWA_H */
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