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