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1 #include <stdio.h> |
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2 #include <errno.h> |
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3 #include <sys/select.h> |
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4 #include <sys/types.h> |
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5 #include <unistd.h> |
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6 #include <sys/syscall.h> |
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7 #include "qemu.h" |
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8 |
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9 int do_strace=0; |
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10 |
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11 struct syscallname { |
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12 int nr; |
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13 const char *name; |
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14 const char *format; |
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15 void (*call)(const struct syscallname *, |
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16 abi_long, abi_long, abi_long, |
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17 abi_long, abi_long, abi_long); |
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18 void (*result)(const struct syscallname *, abi_long); |
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19 }; |
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20 |
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21 /* |
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22 * Utility functions |
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23 */ |
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24 |
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25 static void |
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26 print_execve(const struct syscallname *name, |
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27 abi_long arg1, abi_long arg2, abi_long arg3, |
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28 abi_long arg4, abi_long arg5, abi_long arg6) |
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29 { |
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30 abi_ulong arg_ptr_addr; |
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31 char *s; |
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32 |
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33 if (!(s = lock_user_string(arg1))) |
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34 return; |
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35 gemu_log("%s(\"%s\",{", name->name, s); |
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36 unlock_user(s, arg1, 0); |
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37 |
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38 for (arg_ptr_addr = arg2; ; arg_ptr_addr += sizeof(abi_ulong)) { |
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39 abi_ulong *arg_ptr, arg_addr, s_addr; |
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40 |
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41 arg_ptr = lock_user(VERIFY_READ, arg_ptr_addr, sizeof(abi_ulong), 1); |
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42 if (!arg_ptr) |
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43 return; |
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44 arg_addr = tswapl(*arg_ptr); |
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45 unlock_user(arg_ptr, arg_ptr_addr, 0); |
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46 if (!arg_addr) |
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47 break; |
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48 if ((s = lock_user_string(arg_addr))) { |
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49 gemu_log("\"%s\",", s); |
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50 unlock_user(s, s_addr, 0); |
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51 } |
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52 } |
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53 |
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54 gemu_log("NULL})"); |
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55 } |
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56 |
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57 /* |
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58 * Variants for the return value output function |
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59 */ |
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60 |
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61 static void |
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62 print_syscall_ret_addr(const struct syscallname *name, abi_long ret) |
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63 { |
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64 if( ret == -1 ) { |
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65 gemu_log(" = -1 errno=%d (%s)\n", errno, strerror(errno)); |
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66 } else { |
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67 gemu_log(" = 0x" TARGET_ABI_FMT_lx "\n", ret); |
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68 } |
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69 } |
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70 |
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71 #if 0 /* currently unused */ |
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72 static void |
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73 print_syscall_ret_raw(struct syscallname *name, abi_long ret) |
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74 { |
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75 gemu_log(" = 0x" TARGET_ABI_FMT_lx "\n", ret); |
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76 } |
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77 #endif |
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78 |
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79 /* |
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80 * An array of all of the syscalls we know about |
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81 */ |
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82 |
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83 static const struct syscallname freebsd_scnames[] = { |
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84 #include "freebsd/strace.list" |
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85 }; |
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86 static const struct syscallname netbsd_scnames[] = { |
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87 #include "netbsd/strace.list" |
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88 }; |
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89 static const struct syscallname openbsd_scnames[] = { |
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90 #include "openbsd/strace.list" |
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91 }; |
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92 |
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93 static void |
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94 print_syscall(int num, const struct syscallname *scnames, unsigned int nscnames, |
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95 abi_long arg1, abi_long arg2, abi_long arg3, |
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96 abi_long arg4, abi_long arg5, abi_long arg6) |
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97 { |
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98 unsigned int i; |
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99 const char *format="%s(" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," |
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100 TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," |
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101 TARGET_ABI_FMT_ld ")"; |
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102 |
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103 gemu_log("%d ", getpid() ); |
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104 |
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105 for (i = 0; i < nscnames; i++) |
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106 if (scnames[i].nr == num) { |
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107 if (scnames[i].call != NULL) { |
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108 scnames[i].call(&scnames[i], arg1, arg2, arg3, arg4, arg5, |
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109 arg6); |
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110 } else { |
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111 /* XXX: this format system is broken because it uses |
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112 host types and host pointers for strings */ |
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113 if (scnames[i].format != NULL) |
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114 format = scnames[i].format; |
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115 gemu_log(format, scnames[i].name, arg1, arg2, arg3, arg4, |
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116 arg5, arg6); |
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117 } |
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118 return; |
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119 } |
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120 gemu_log("Unknown syscall %d\n", num); |
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121 } |
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122 |
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123 static void |
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124 print_syscall_ret(int num, abi_long ret, const struct syscallname *scnames, |
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125 unsigned int nscnames) |
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126 { |
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127 unsigned int i; |
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128 |
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129 for (i = 0; i < nscnames; i++) |
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130 if (scnames[i].nr == num) { |
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131 if (scnames[i].result != NULL) { |
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132 scnames[i].result(&scnames[i], ret); |
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133 } else { |
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134 if( ret < 0 ) { |
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135 gemu_log(" = -1 errno=" TARGET_ABI_FMT_ld " (%s)\n", -ret, |
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136 strerror(-ret)); |
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137 } else { |
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138 gemu_log(" = " TARGET_ABI_FMT_ld "\n", ret); |
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139 } |
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140 } |
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141 break; |
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142 } |
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143 } |
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144 |
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145 /* |
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146 * The public interface to this module. |
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147 */ |
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148 void |
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149 print_freebsd_syscall(int num, |
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150 abi_long arg1, abi_long arg2, abi_long arg3, |
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151 abi_long arg4, abi_long arg5, abi_long arg6) |
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152 { |
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153 print_syscall(num, freebsd_scnames, ARRAY_SIZE(freebsd_scnames), |
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154 arg1, arg2, arg3, arg4, arg5, arg6); |
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155 } |
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156 |
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157 void |
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158 print_freebsd_syscall_ret(int num, abi_long ret) |
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159 { |
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160 print_syscall_ret(num, ret, freebsd_scnames, ARRAY_SIZE(freebsd_scnames)); |
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161 } |
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162 |
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163 void |
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164 print_netbsd_syscall(int num, |
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165 abi_long arg1, abi_long arg2, abi_long arg3, |
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166 abi_long arg4, abi_long arg5, abi_long arg6) |
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167 { |
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168 print_syscall(num, netbsd_scnames, ARRAY_SIZE(netbsd_scnames), |
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169 arg1, arg2, arg3, arg4, arg5, arg6); |
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170 } |
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171 |
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172 void |
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173 print_netbsd_syscall_ret(int num, abi_long ret) |
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174 { |
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175 print_syscall_ret(num, ret, netbsd_scnames, ARRAY_SIZE(netbsd_scnames)); |
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176 } |
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177 |
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178 void |
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179 print_openbsd_syscall(int num, |
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180 abi_long arg1, abi_long arg2, abi_long arg3, |
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181 abi_long arg4, abi_long arg5, abi_long arg6) |
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182 { |
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183 print_syscall(num, openbsd_scnames, ARRAY_SIZE(openbsd_scnames), |
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184 arg1, arg2, arg3, arg4, arg5, arg6); |
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185 } |
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186 |
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187 void |
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188 print_openbsd_syscall_ret(int num, abi_long ret) |
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189 { |
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190 print_syscall_ret(num, ret, openbsd_scnames, ARRAY_SIZE(openbsd_scnames)); |
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191 } |