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 #if 1
13 #define FPSWA_BUG
14 #endif
15
16 typedef struct {
17 /* 4 * 128 bits */
18 unsigned long fp_lp[4*2];
19 } fp_state_low_preserved_t;
20
21 typedef struct {
22 /* 10 * 128 bits */
23 unsigned long fp_lv[10 * 2];
24 } fp_state_low_volatile_t;
25
26 typedef struct {
27 /* 16 * 128 bits */
28 unsigned long fp_hp[16 * 2];
29 } fp_state_high_preserved_t;
30
31 typedef struct {
32 /* 96 * 128 bits */
33 unsigned long fp_hv[96 * 2];
34 } fp_state_high_volatile_t;
35
36 /**
37 * floating point state to be passed to the FP emulation library by
38 * the trap/fault handler
39 */
40 typedef struct {
41 unsigned long bitmask_low64;
42 unsigned long bitmask_high64;
43 fp_state_low_preserved_t *fp_state_low_preserved;
44 fp_state_low_volatile_t *fp_state_low_volatile;
45 fp_state_high_preserved_t *fp_state_high_preserved;
46 fp_state_high_volatile_t *fp_state_high_volatile;
47 } fp_state_t;
48
49 typedef struct {
50 unsigned long status;
51 unsigned long err0;
52 unsigned long err1;
53 unsigned long err2;
54 } fpswa_ret_t;
55
56 /**
57 * function header for the Floating Point software assist
58 * library. This function is invoked by the Floating point software
59 * assist trap/fault handler.
60 */
61 typedef fpswa_ret_t (*efi_fpswa_t) (unsigned long trap_type, void *bundle, unsigned long *ipsr,
62 unsigned long *fsr, unsigned long *isr, unsigned long *preds,
63 unsigned long *ifs, fp_state_t *fp_state);
64
65 /**
66 * This is the FPSWA library interface as defined by EFI. We need to pass a
67 * pointer to the interface itself on a call to the assist library
68 */
69 typedef struct {
70 unsigned int revision;
71 unsigned int reserved;
72 efi_fpswa_t fpswa;
73 } fpswa_interface_t;
74
75 #endif /* _ASM_IA64_FPSWA_H */
76
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