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