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annotate gcc/config/sparc/sol2-unwind.h @ 67:f6334be47118

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update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
author nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
date Tue, 22 Mar 2011 17:18:12 +0900
parents 77e2b8dfacca
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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55
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1 /* DWARF2 EH unwinding support for SPARC Solaris.
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2 Copyright (C) 2009, 2010, 2011 Free Software Foundation, Inc.
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3
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4 This file is part of GCC.
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5
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6 GCC is free software; you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 3, or (at your option)
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9 any later version.
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10
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11 GCC is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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15
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16 Under Section 7 of GPL version 3, you are granted additional
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17 permissions described in the GCC Runtime Library Exception, version
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18 3.1, as published by the Free Software Foundation.
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19
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20 You should have received a copy of the GNU General Public License and
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21 a copy of the GCC Runtime Library Exception along with this program;
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22 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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23 <http://www.gnu.org/licenses/>. */
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24
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25 /* Do code reading to identify a signal frame, and set the frame
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26 state data appropriately. See unwind-dw2.c for the structs. */
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27
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28 #include <ucontext.h>
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29 #include <sys/frame.h>
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30 #include <sys/stack.h>
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31
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32 #if defined(__arch64__)
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33
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34 #define IS_SIGHANDLER sparc64_is_sighandler
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67
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36 static int
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37 sparc64_is_sighandler (unsigned int *pc, unsigned int *savpc, int *nframes)
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38 {
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39 if (/* Solaris 8 - single-threaded
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40 ----------------------------
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41 <sigacthandler+24>: add %g5, %o7, %o2
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42 <sigacthandler+28>: ldx [ %o2 + 0xfa0 ], %g5
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43 <sigacthandler+32>: sra %i0, 0, %o0
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44 <sigacthandler+36>: sllx %o0, 3, %g4
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45 <sigacthandler+40>: ldx [ %g4 + %g5 ], %l0
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46 <sigacthandler+44>: call %l0
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47 <sigacthandler+48>: mov %i2, %o2
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48 <sigacthandler+52>: cmp %i3, 8 <--- PC */
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49 ( pc[-7] == 0x9401400f
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50 && pc[-6] == 0xca5aafa0
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51 && pc[-5] == 0x913e2000
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52 && pc[-4] == 0x892a3003
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53 && pc[-3] == 0xe0590005
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54 && pc[-2] == 0x9fc40000
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55 && pc[-1] == 0x9410001a
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56 && pc[ 0] == 0x80a6e008)
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57
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58 || /* Solaris 9 - single-threaded
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59 ----------------------------
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60 The pattern changes slightly in different versions of the
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61 operating system, so we skip the comparison against pc[-6] for
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62 Solaris 9.
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63
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64 <sigacthandler+24>: sra %i0, 0, %l1
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66 Solaris 9 5/02:
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67 <sigacthandler+28>: ldx [ %o2 + 0xf68 ], %g5
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68 Solaris 9 9/05:
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69 <sigacthandler+28>: ldx [ %o2 + 0xe50 ], %g5
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70
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71 <sigacthandler+32>: sllx %l1, 3, %g4
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72 <sigacthandler+36>: mov %l1, %o0
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73 <sigacthandler+40>: ldx [ %g4 + %g5 ], %l0
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74 <sigacthandler+44>: call %l0
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75 <sigacthandler+48>: mov %i2, %o2
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76 <sigacthandler+52>: cmp %l1, 8 <--- PC */
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77 ( pc[-7] == 0xa33e2000
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78 /* skip pc[-6] */
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79 && pc[-5] == 0x892c7003
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80 && pc[-4] == 0x90100011
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81 && pc[-3] == 0xe0590005
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82 && pc[-2] == 0x9fc40000
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83 && pc[-1] == 0x9410001a
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84 && pc[ 0] == 0x80a46008))
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85 {
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86 /* We need to move up one frame:
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87
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88 <signal handler> <-- context->cfa
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89 sigacthandler
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90 <kernel>
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91 */
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92 *nframes = 1;
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93 return 1;
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94 }
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95
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96 if (/* Solaris 8+ - multi-threaded
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97 ----------------------------
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98 <__sighndlr>: save %sp, -176, %sp
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99 <__sighndlr+4>: mov %i0, %o0
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100 <__sighndlr+8>: mov %i1, %o1
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101 <__sighndlr+12>: call %i3
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102 <__sighndlr+16>: mov %i2, %o2
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103 <__sighndlr+20>: ret <--- PC
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104 <__sighndlr+24>: restore */
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105 pc[-5] == 0x9de3bf50
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106 && pc[-4] == 0x90100018
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107 && pc[-3] == 0x92100019
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108 && pc[-2] == 0x9fc6c000
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109 && pc[-1] == 0x9410001a
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parents: 55
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110 && pc[ 0] == 0x81c7e008
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parents: 55
diff changeset
111 && pc[ 1] == 0x81e80000)
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parents: 55
diff changeset
112 {
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parents: 55
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113 if (/* Solaris 8 /usr/lib/sparcv9/libthread.so.1
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parents: 55
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114 ------------------------------------------
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parents: 55
diff changeset
115 Before patch 108827-08:
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116 <sigacthandler+1760>: st %g4, [ %i1 + 0x1c ]
55
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117
67
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parents: 55
diff changeset
118 Since patch 108827-08:
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parents: 55
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119 <sigacthandler+1816>: st %l0, [ %i4 + 0x10 ] */
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120 savpc[-1] == 0xc826601c
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parents: 55
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121 || savpc[-1] == 0xe0272010)
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parents: 55
diff changeset
122 {
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123 /* We need to move up three frames:
55
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124
67
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125 <signal handler> <-- context->cfa
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126 __sighndlr
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127 sigacthandler
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128 <kernel>
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129 */
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130 *nframes = 2;
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131 }
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132 else /* Solaris 8 /usr/lib/lwp/sparcv9/libthread.so.1, Solaris 9+
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133 ---------------------------------------------------------- */
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134 {
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135 /* We need to move up three frames:
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parents: 55
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136
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137 <signal handler> <-- context->cfa
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138 __sighndlr
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139 call_user_handler
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140 sigacthandler
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141 <kernel>
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142 */
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143 *nframes = 3;
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144 }
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145 return 1;
55
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146 }
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147
67
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148 return 0;
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149 }
55
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150
67
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151 #define MD_FALLBACK_FRAME_STATE_FOR sparc64_fallback_frame_state
55
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152
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153 #define MD_FROB_UPDATE_CONTEXT sparc64_frob_update_context
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154
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155 static void
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156 sparc64_frob_update_context (struct _Unwind_Context *context,
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157 _Unwind_FrameState *fs)
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158 {
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159 /* The column of %sp contains the old CFA, not the old value of %sp.
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160 The CFA offset already comprises the stack bias so, when %sp is the
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161 CFA register, we must avoid counting the stack bias twice. Do not
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162 do that for signal frames as the offset is artificial for them. */
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163 if (fs->regs.cfa_reg == __builtin_dwarf_sp_column ()
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164 && fs->regs.cfa_how == CFA_REG_OFFSET
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165 && fs->regs.cfa_offset != 0
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166 && !fs->signal_frame)
67
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diff changeset
167 context->cfa -= STACK_BIAS;
55
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168 }
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169
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170 #else
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171
67
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172 #define IS_SIGHANDLER sparc_is_sighandler
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173
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174 static int
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175 sparc_is_sighandler (unsigned int *pc, unsigned int * savpc, int *nframes)
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176 {
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177 if (/* Solaris 8, 9 - single-threaded
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178 -------------------------------
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179 The pattern changes slightly in different versions of the operating
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180 system, so we skip the comparison against pc[-6].
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181
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182 <sigacthandler+16>: add %o1, %o7, %o3
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183 <sigacthandler+20>: mov %i1, %o1
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184
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185 <sigacthandler+24>: ld [ %o3 + <offset> ], %o2
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186
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187 <sigacthandler+28>: sll %i0, 2, %o0
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188 <sigacthandler+32>: ld [ %o0 + %o2 ], %l0
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189 <sigacthandler+36>: mov %i0, %o0
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190 <sigacthandler+40>: call %l0
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191 <sigacthandler+44>: mov %i2, %o2
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192 <sigacthandler+48>: cmp %i0, 8 <--- PC */
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193 pc[-8] == 0x9602400f
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194 && pc[-7] == 0x92100019
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195 /* skip pc[-6] */
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196 && pc[-5] == 0x912e2002
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197 && pc[-4] == 0xe002000a
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198 && pc[-3] == 0x90100018
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199 && pc[-2] == 0x9fc40000
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parents: 55
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200 && pc[-1] == 0x9410001a
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
201 && pc[ 0] == 0x80a62008)
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parents: 55
diff changeset
202 {
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parents: 55
diff changeset
203 /* Need to move up one frame:
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diff changeset
204
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205 <signal handler> <-- context->cfa
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206 sigacthandler
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207 <kernel>
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208 */
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209 *nframes = 1;
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210 return 1;
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parents: 55
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211 }
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diff changeset
212
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213 if (/* Solaris 8 - multi-threaded
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214 ---------------------------
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215 <__libthread_segvhdlr+212>: clr %o2
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216 <__libthread_segvhdlr+216>: ld [ %fp + -28 ], %l0
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
217 <__libthread_segvhdlr+220>: mov %i4, %o0
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
218 <__libthread_segvhdlr+224>: mov %i1, %o1
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
219 <__libthread_segvhdlr+228>: call %l0
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
220 <__libthread_segvhdlr+232>: mov %i2, %o2
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
221 <__libthread_segvhdlr+236>: ret <--- PC
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
222 <__libthread_segvhdlr+240>: restore
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
223 <__libthread_segvhdlr+244>: cmp %o1, 0 */
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
224 pc[-6] == 0x94102000
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
225 && pc[-5] == 0xe007bfe4
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
226 && pc[-4] == 0x9010001c
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
227 && pc[-3] == 0x92100019
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
228 && pc[-2] == 0x9fc40000
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
229 && pc[-1] == 0x9410001a
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
230 && pc[ 0] == 0x81c7e008
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
231 && pc[ 1] == 0x81e80000
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
232 && pc[ 2] == 0x80a26000)
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
233 {
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
234 /* Need to move up one frame:
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
235
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
236 <signal handler> <-- context->cfa
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
237 __libthread_segvhdlr
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
238 <kernel>
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
239 */
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
240 *nframes = 1;
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
241 return 1;
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
242 }
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
243
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
244 if(/* Solaris 8+ - multi-threaded
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
245 ----------------------------
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
246 <__sighndlr>: save %sp, -96, %sp
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
247 <__sighndlr+4>: mov %i0, %o0
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
248 <__sighndlr+8>: mov %i1, %o1
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
249 <__sighndlr+12>: call %i3
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
250 <__sighndlr+16>: mov %i2, %o2
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
251 <__sighndlr+20>: ret <--- PC
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
252 <__sighndlr+24>: restore */
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
253 pc[-5] == 0x9de3bfa0
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
254 && pc[-4] == 0x90100018
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
255 && pc[-3] == 0x92100019
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
256 && pc[-2] == 0x9fc6c000
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
257 && pc[-1] == 0x9410001a
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
258 && pc[ 0] == 0x81c7e008
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
259 && pc[ 1] == 0x81e80000)
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
260 {
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
261 if (/* Solaris 8 /usr/lib/libthread.so.1
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
262 ----------------------------------
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
263 <sigacthandler+1796>: mov %i0, %o0 */
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
264 savpc[-1] == 0x90100018)
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
265 {
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
266 /* We need to move up two frames:
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
267
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
268 <signal handler> <-- context->cfa
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
269 __sighndlr
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
270 sigacthandler
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
271 <kernel>
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
272 */
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
273 *nframes = 2;
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
274 }
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
275 else /* Solaris 8 /usr/lib/lwp/libthread.so.1, Solaris 9+
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
276 -------------------------------------------------- */
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
277 {
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
278 /* We need to move up three frames:
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
279
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
280 <signal handler> <-- context->cfa
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
281 __sighndlr
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
282 call_user_handler
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
283 sigacthandler
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
284 <kernel>
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
285 */
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
286 *nframes = 3;
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
287 }
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
288 return 1;
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
289 }
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
290
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
291 return 0;
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
292 }
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
293
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
294 #define MD_FALLBACK_FRAME_STATE_FOR sparc_fallback_frame_state
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
295
67
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
296 #endif
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
297
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
298 static _Unwind_Reason_Code
67
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
299 MD_FALLBACK_FRAME_STATE_FOR (struct _Unwind_Context *context,
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
300 _Unwind_FrameState *fs)
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
301 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
302 void *pc = context->ra;
67
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
303 struct frame *fp = (struct frame *) context->cfa;
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
304 int nframes;
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
305 void *this_cfa = context->cfa;
67
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
306 long new_cfa;
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
307 void *ra_location, *shifted_ra_location;
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
308 mcontext_t *mctx;
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
309 int i;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
310
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
311 /* Deal with frame-less function from which a signal was raised. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
312 if (_Unwind_IsSignalFrame (context))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
313 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
314 /* The CFA is by definition unmodified in this case. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
315 fs->regs.cfa_how = CFA_REG_OFFSET;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
316 fs->regs.cfa_reg = __builtin_dwarf_sp_column ();
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
317 fs->regs.cfa_offset = 0;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
318
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
319 /* This is the canonical RA column. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
320 fs->retaddr_column = 15;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
321
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
322 return _URC_NO_REASON;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
323 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
324
67
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
325 if (IS_SIGHANDLER (pc, (unsigned int *)fp->fr_savpc, &nframes))
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
326 {
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
327 struct handler_args {
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
328 struct frame frwin;
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff changeset
329 ucontext_t ucontext;
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diff changeset
330 } *handler_args;
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
331 ucontext_t *ucp;
55
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diff changeset
332
67
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
333 /* context->cfa points into the frame after the saved frame pointer and
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
334 saved pc (struct frame).
55
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335
67
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diff changeset
336 The ucontext_t structure is in the kernel frame after a struct
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff changeset
337 frame. Since the frame sizes vary even within OS releases, we
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff changeset
338 need to walk the stack to get there. */
55
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339
67
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diff changeset
340 for (i = 0; i < nframes; i++)
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff changeset
341 fp = (struct frame *) ((char *)fp->fr_savfp + STACK_BIAS);
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
342
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diff changeset
343 handler_args = (struct handler_args *) fp;
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff changeset
344 ucp = &handler_args->ucontext;
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff changeset
345 mctx = &ucp->uc_mcontext;
55
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diff changeset
346 }
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347
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diff changeset
348 /* Exit if the pattern at the return address does not match the
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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349 previous three patterns. */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
350 else
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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diff changeset
351 return _URC_END_OF_STACK;
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352
67
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parents: 55
diff changeset
353 new_cfa = mctx->gregs[REG_SP];
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
354 /* The frame address is %sp + STACK_BIAS in 64-bit mode. */
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
355 new_cfa += STACK_BIAS;
55
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356
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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357 fs->regs.cfa_how = CFA_REG_OFFSET;
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358 fs->regs.cfa_reg = __builtin_dwarf_sp_column ();
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diff changeset
359 fs->regs.cfa_offset = new_cfa - (long) this_cfa;
55
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parents:
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360
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361 /* Restore global and out registers (in this order) from the
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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diff changeset
362 ucontext_t structure, uc_mcontext.gregs field. */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
363 for (i = 1; i < 16; i++)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
364 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
365 /* We never restore %sp as everything is purely CFA-based. */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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366 if ((unsigned int) i == __builtin_dwarf_sp_column ())
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
367 continue;
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parents:
diff changeset
368
67
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diff changeset
369 /* First the global registers and then the out registers. */
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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370 fs->regs.reg[i].how = REG_SAVED_OFFSET;
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diff changeset
371 fs->regs.reg[i].loc.offset = (long)&mctx->gregs[REG_Y + i] - new_cfa;
55
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parents:
diff changeset
372 }
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parents:
diff changeset
373
67
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diff changeset
374 /* Just above the stack pointer there are 16 extended words in which
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
375 the register window (in and local registers) was saved. */
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
376 for (i = 0; i < 16; i++)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
377 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
378 fs->regs.reg[i + 16].how = REG_SAVED_OFFSET;
67
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff changeset
379 fs->regs.reg[i + 16].loc.offset = i*sizeof(long);
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
380 }
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
381
67
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
382 /* Check whether we need to restore FPU registers. */
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
383 if (mctx->fpregs.fpu_qcnt)
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
384 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
385 for (i = 0; i < 32; i++)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
386 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
387 fs->regs.reg[i + 32].how = REG_SAVED_OFFSET;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
388 fs->regs.reg[i + 32].loc.offset
67
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diff changeset
389 = (long)&mctx->fpregs.fpu_fr.fpu_regs[i] - new_cfa;
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
390 }
67
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parents: 55
diff changeset
391
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff changeset
392 #ifdef __arch64__
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff changeset
393 /* For 64-bit, fpu_fr.fpu_dregs contains 32 instead of 16 doubles. */
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
394 for (i = 32; i < 64; i++)
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
395 {
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
396 if (i > 32 && (i & 1))
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
397 continue;
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
398
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
399 fs->regs.reg[i + 32].how = REG_SAVED_OFFSET;
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
400 fs->regs.reg[i + 32].loc.offset
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
401 = (long)&mctx->fpregs.fpu_fr.fpu_dregs[i/2] - new_cfa;
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
402 }
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
403 #endif
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
404 }
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
405
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
406 /* State the rules to find the kernel's code "return address", which is
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
407 the address of the active instruction when the signal was caught.
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
408 On the SPARC, since RETURN_ADDR_OFFSET (essentially 8) is defined, we
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
409 need to preventively subtract it from the purported return address. */
67
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
410 ra_location = &mctx->gregs[REG_PC];
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
411 shifted_ra_location = &mctx->gregs[REG_Y];
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
412 *(void **)shifted_ra_location = *(void **)ra_location - 8;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
413 fs->retaddr_column = 0;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
414 fs->regs.reg[0].how = REG_SAVED_OFFSET;
67
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
415 fs->regs.reg[0].loc.offset = (long)shifted_ra_location - new_cfa;
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
416 fs->signal_frame = 1;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
417
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
418 return _URC_NO_REASON;
67
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
419 }