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1 #ifndef CYGONCE_LIBC_SETJMP_INL |
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2 #define CYGONCE_LIBC_SETJMP_INL |
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3 //=========================================================================== |
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4 // |
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5 // setjmp.inl |
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6 // |
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7 // Inline functions for ANSI standard non-local jumps |
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8 // |
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9 //=========================================================================== |
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10 //####COPYRIGHTBEGIN#### |
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11 // |
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12 // ------------------------------------------- |
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13 // The contents of this file are subject to the Cygnus eCos Public License |
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14 // Version 1.0 (the "License"); you may not use this file except in |
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15 // compliance with the License. You may obtain a copy of the License at |
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16 // http://sourceware.cygnus.com/ecos |
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17 // |
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18 // Software distributed under the License is distributed on an "AS IS" |
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19 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the |
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20 // License for the specific language governing rights and limitations under |
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21 // the License. |
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22 // |
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23 // The Original Code is eCos - Embedded Cygnus Operating System, released |
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24 // September 30, 1998. |
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25 // |
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26 // The Initial Developer of the Original Code is Cygnus. Portions created |
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27 // by Cygnus are Copyright (C) 1998 Cygnus Solutions. All Rights Reserved. |
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28 // ------------------------------------------- |
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29 // |
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30 //####COPYRIGHTEND#### |
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31 //=========================================================================== |
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32 //#####DESCRIPTIONBEGIN#### |
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33 // |
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34 // Author(s): jlarmour@cygnus.co.uk |
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35 // Contributors: jlarmour@cygnus.co.uk |
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36 // Date: 1998-02-13 |
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37 // Purpose: |
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38 // Description: Inline functions to implement ANSI standard non-local jumps as |
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39 // per ANSI para 7.6 |
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40 // Usage: Do not include this file, #include <setjmp.h> instead |
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41 // |
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42 //####DESCRIPTIONEND#### |
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43 // |
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44 //=========================================================================== |
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45 |
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46 // CONFIGURATION |
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47 |
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48 #include <pkgconf/libc.h> // Configuration header |
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49 |
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50 // Include the C library? |
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51 #ifdef CYGPKG_LIBC |
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52 |
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53 // INCLUDES |
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54 |
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55 #include <cyg/infra/cyg_type.h> // Common type definitions and support |
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56 #include <cyg/infra/cyg_trac.h> // Common tracing code |
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57 #include <cyg/infra/cyg_ass.h> // Common assertion code |
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58 #include <setjmp.h> // Header for this file, just in case |
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59 #include <cyg/hal/hal_arch.h> // HAL architecture specific implementation |
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60 |
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61 // INLINE FUNCTIONS |
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62 |
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63 CYGPRI_LIBC_INLINE void |
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64 longjmp( jmp_buf cyg_buf, int cyg_val) |
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65 { |
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66 CYG_REPORT_FUNCNAME( "longjmp" ); |
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67 CYG_REPORT_FUNCARG2( "&cyg_buf=%08x, cyg_val=%d", &cyg_buf, cyg_val ); |
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68 |
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69 // ANSI says that if we are passed cyg_val==0, then we change it to 1 |
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70 if (cyg_val == 0) |
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71 ++cyg_val; |
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72 |
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73 // we let the HAL do the work |
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74 |
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75 HAL_REORDER_BARRIER(); // prevent any chance of optimisation re-ordering |
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76 hal_longjmp( cyg_buf, cyg_val ); |
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77 HAL_REORDER_BARRIER(); // prevent any chance of optimisation re-ordering |
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78 |
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79 #ifdef CYGDBG_USE_ASSERTS |
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80 CYG_ASSERT( 0, "longjmp should not have reached this point!" ); |
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81 #else |
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82 for (;;) |
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83 CYG_EMPTY_STATEMENT; |
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84 #endif |
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85 } // longjmp() |
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86 |
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87 |
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88 #endif // ifdef CYGPKG_LIBC |
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89 |
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90 #endif // CYGONCE_LIBC_SETJMP_INL multiple inclusion protection |
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91 |
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92 // EOF setjmp.inl |
