Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
| 12 | typedef struct { |
| 13 | /* 4 * 128 bits */ |
| 14 | unsigned long fp_lp[4*2]; |
| 15 | } fp_state_low_preserved_t; |
| 16 | |
| 17 | typedef struct { |
| 18 | /* 10 * 128 bits */ |
| 19 | unsigned long fp_lv[10 * 2]; |
| 20 | } fp_state_low_volatile_t; |
| 21 | |
| 22 | typedef struct { |
| 23 | /* 16 * 128 bits */ |
| 24 | unsigned long fp_hp[16 * 2]; |
| 25 | } fp_state_high_preserved_t; |
| 26 | |
| 27 | typedef 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 | */ |
| 36 | typedef 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 | |
| 45 | typedef 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 | */ |
| 57 | typedef 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 | */ |
| 65 | typedef struct { |
| 66 | unsigned int revision; |
| 67 | unsigned int reserved; |
| 68 | efi_fpswa_t fpswa; |
| 69 | } fpswa_interface_t; |
| 70 | |
| 71 | extern fpswa_interface_t *fpswa_interface; |
| 72 | |
| 73 | #endif /* _ASM_IA64_FPSWA_H */ |