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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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23 #if !defined (octave_f77_fcn_h) |
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24 #define octave_f77_fcn_h 1 |
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25 |
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26 #include "quit.h" |
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27 |
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28 #ifdef __cplusplus |
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29 extern "C" { |
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30 #endif |
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31 |
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32 /* Hack to stringize macro results. */ |
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33 #define xSTRINGIZE(x) #x |
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34 #define STRINGIZE(x) xSTRINGIZE(x) |
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35 |
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36 /* How to print an error for the F77_XFCN macro. */ |
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37 |
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38 #define F77_XFCN_ERROR(f, F) \ |
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39 (*current_liboctave_error_handler) \ |
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40 ("exception encountered in Fortran subroutine %s", \ |
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41 STRINGIZE (F77_FUNC (f, F))) |
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42 |
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43 /* This can be used to call a Fortran subroutine that might call |
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44 XSTOPX. XSTOPX will call lonjmp with current_context. Once back |
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45 here, we'll restore the previous context and return. We may also |
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46 end up here if an interrupt is processed when the Fortran |
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47 subroutine is called. In that case, we resotre the context and go |
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48 to the top level. The error_state should be checked immediately |
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49 after this macro is used. */ |
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50 |
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51 #define F77_XFCN(f, F, args) \ |
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52 do \ |
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53 { \ |
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54 octave_jmp_buf saved_context; \ |
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55 f77_exception_encountered = 0; \ |
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56 octave_save_current_context ((char *) saved_context); \ |
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57 if (octave_set_current_context) \ |
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58 { \ |
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59 octave_restore_current_context ((char *) saved_context); \ |
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60 if (f77_exception_encountered) \ |
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61 F77_XFCN_ERROR (f, F); \ |
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62 else if (octave_allocation_error) \ |
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63 octave_throw_bad_alloc (); \ |
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64 else \ |
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65 octave_throw_interrupt_exception (); \ |
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66 } \ |
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67 else \ |
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68 { \ |
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69 octave_interrupt_immediately++; \ |
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70 F77_FUNC (f, F) args; \ |
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71 octave_interrupt_immediately--; \ |
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72 octave_restore_current_context ((char *) saved_context); \ |
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73 } \ |
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74 } \ |
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75 while (0) |
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76 |
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77 /* So we can check to see if an exception has occurred. */ |
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78 extern int f77_exception_encountered; |
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79 |
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80 #if !defined (F77_FCN) |
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81 #define F77_FCN(f, F) F77_FUNC (f, F) |
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82 #endif |
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83 |
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84 #if defined (F77_USES_CRAY_CALLING_CONVENTION) |
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85 |
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86 #include <fortran.h> |
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87 #define F77_CHAR_ARG(x) octave_make_cray_ftn_ch_dsc (x, strlen (x)) |
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88 #define F77_CONST_CHAR_ARG(x) \ |
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89 octave_make_cray_const_ftn_ch_dsc (x, strlen (x)) |
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90 #define F77_CHAR_ARG2(x, l) octave_make_cray_ftn_ch_dsc (x, l) |
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91 #define F77_CONST_CHAR_ARG2(x, l) octave_make_cray_const_ftn_ch_dsc (x, l) |
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92 #define F77_CXX_STRING_ARG(x) \ |
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93 octave_make_cray_const_ftn_ch_dsc (x.c_str (), x.length ()) |
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94 #define F77_CHAR_ARG_LEN(l) |
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95 #define F77_CHAR_ARG_DECL octave_cray_ftn_ch_dsc |
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96 #define F77_CONST_CHAR_ARG_DECL octave_cray_ftn_ch_dsc |
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97 #define F77_CHAR_ARG_LEN_DECL |
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98 #define F77_RET_T int |
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99 #define F77_RETURN(retval) return retval; |
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100 |
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101 /* XXX FIXME XXX -- these should work for SV1 or Y-MP systems but will |
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102 need to be changed for others. */ |
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103 |
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104 typedef union |
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105 { |
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106 const char *const_ptr; |
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107 char *ptr; |
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108 struct |
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109 { |
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110 unsigned off : 6; |
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111 unsigned len : 26; |
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112 unsigned add : 32; |
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113 } mask; |
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114 } octave_cray_descriptor; |
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115 |
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116 typedef void *octave_cray_ftn_ch_dsc; |
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117 |
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118 #ifdef __cplusplus |
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119 #define OCTAVE_F77_FCN_INLINE inline |
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120 #else |
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121 #define OCTAVE_F77_FCN_INLINE |
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122 #endif |
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123 |
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124 static OCTAVE_F77_FCN_INLINE octave_cray_ftn_ch_dsc |
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125 octave_make_cray_ftn_ch_dsc (char *ptr_arg, unsigned long len_arg) |
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126 { |
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127 octave_cray_descriptor desc; |
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128 desc.ptr = ptr_arg; |
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129 desc.mask.len = len_arg << 3; |
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130 return *((octave_cray_ftn_ch_dsc *) &desc); |
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131 } |
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132 |
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133 static OCTAVE_F77_FCN_INLINE octave_cray_ftn_ch_dsc |
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134 octave_make_cray_const_ftn_ch_dsc (const char *ptr_arg, unsigned long len_arg) |
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135 { |
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136 octave_cray_descriptor desc; |
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137 desc.const_ptr = ptr_arg; |
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138 desc.mask.len = len_arg << 3; |
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139 return *((octave_cray_ftn_ch_dsc *) &desc); |
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140 } |
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141 |
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142 #ifdef __cplusplus |
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143 #undef OCTAVE_F77_FCN_INLINE |
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144 #endif |
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145 |
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146 #elif defined (F77_USES_VISUAL_FORTRAN_CALLING_CONVENTION) |
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147 |
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148 #define F77_CHAR_ARG(x) x, strlen (x) |
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149 #define F77_CONST_CHAR_ARG(x) F77_CHAR_ARG (x) |
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150 #define F77_CHAR_ARG2(x, l) x, l |
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151 #define F77_CONST_CHAR_ARG2(x, l) F77_CHAR_ARG2 (x, l) |
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152 #define F77_CXX_STRING_ARG(x) F77_CONST_CHAR_ARG2 (x.c_str (), x.length ()) |
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153 #define F77_CHAR_ARG_LEN(l) |
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154 #define F77_CHAR_ARG_DECL char *, int |
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155 #define F77_CONST_CHAR_ARG_DECL const char *, int |
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156 #define F77_CHAR_ARG_LEN_DECL |
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157 #define F77_RET_T void |
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158 #define F77_RETURN(retval) |
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159 |
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160 #else |
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161 |
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162 /* Assume f2c-compatible calling convention. */ |
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163 |
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164 #define F77_CHAR_ARG(x) x |
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165 #define F77_CONST_CHAR_ARG(x) F77_CHAR_ARG (x) |
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166 #define F77_CHAR_ARG2(x, l) x |
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167 #define F77_CONST_CHAR_ARG2(x, l) F77_CHAR_ARG2 (x, l) |
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168 #define F77_CXX_STRING_ARG(x) F77_CONST_CHAR_ARG2 (x.c_str (), x.length ()) |
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169 #define F77_CHAR_ARG_LEN(l) , (long) l |
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170 #define F77_CHAR_ARG_DECL char * |
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171 #define F77_CONST_CHAR_ARG_DECL const char * |
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172 #define F77_CHAR_ARG_LEN_DECL , long |
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173 #define F77_RET_T int |
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174 #define F77_RETURN(retval) return retval; |
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175 |
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176 #endif |
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177 |
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178 extern F77_RET_T |
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179 F77_FUNC (xstopx, XSTOPX) (F77_CONST_CHAR_ARG_DECL |
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180 F77_CHAR_ARG_LEN_DECL) GCC_ATTR_NORETURN; |
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181 |
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182 #ifdef __cplusplus |
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183 } |
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184 #endif |
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185 |
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186 #endif |
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187 |
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188 /* |
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189 ;;; Local Variables: *** |
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190 ;;; mode: C++ *** |
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191 ;;; End: *** |
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192 */ |
