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74 lines
1.9 KiB
74 lines
1.9 KiB
/* 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 <[email protected]> |
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* Copyright (C) 1999 Goutham Rao <[email protected]> |
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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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