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1da177e4 LT |
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 */ |