Forgot to add these files. They are referent to the last commit,
"Implementing the catch syscall feature".
This commit is contained in:
Sergio Durigan Junior
parent
a96d9b2e9a
commit
fbbe92c5af
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@ -0,0 +1,25 @@
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/* This file is used to test the 'catch syscall' feature on GDB.
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Please, if you are going to edit this file DO NOT change the syscalls
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being called (nor the order of them). If you really must do this, then
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take a look at catch-syscall.exp and modify there too.
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Written by Sergio Durigan Junior <sergiodj@linux.vnet.ibm.com>
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September, 2008 */
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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int
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main (void)
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{
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/* A close() with a wrong argument. We are only
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interested in the syscall. */
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close (-1);
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chroot (".");
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/* The last syscall. Do not change this. */
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_exit (0);
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}
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@ -0,0 +1,445 @@
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# Copyright 1997, 1999, 2007, 2008 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# This program tests the 'catch syscall' functionality.
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#
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# It was written by Sergio Durigan Junior <sergiodj@linux.vnet.ibm.com>
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# on September/2008.
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if { [is_remote target] || ![isnative] } then {
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continue
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}
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set prms_id 0
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set bug_id 0
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global srcfile
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set testfile "catch-syscall"
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set srcfile ${testfile}.c
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set binfile ${objdir}/${subdir}/${testfile}
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# All (but the last) syscalls from the example code
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# They are ordered according to the file, so do not change this.
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set all_syscalls { "close" "chroot" }
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set all_syscalls_numbers { }
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# The last syscall (exit()) does not return, so
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# we cannot expect the catchpoint to be triggered
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# twice. It is a special case.
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set last_syscall "exit_group"
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if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
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untested catch-syscall.exp
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return -1
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}
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# Until "catch syscall" is implemented on other targets...
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if {![istarget "hppa*-hp-hpux*"] && ![istarget "*-linux*"]} then {
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continue
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}
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# This shall be updated whenever 'catch syscall' is implemented
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# on some architecture.
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#if { ![istarget "i\[34567\]86-*-linux*"]
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if { ![istarget "x86_64-*-linux*"] && ![istarget "i\[34567\]86-*-linux*"]
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&& ![istarget "powerpc-*-linux*"] && ![istarget "powerpc64-*-linux*"] } {
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continue
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}
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# Internal procedure used to check if, after issuing a 'catch syscall'
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# command (without arguments), the 'info breakpoints' command displays
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# that '"any syscall"' is to be caught.
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proc check_info_bp_any_syscall {} {
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global gdb_prompt
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# Verifying that the catchpoint appears in the 'info breakpoints'
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# command, but with "<any syscall>".
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set thistest "catch syscall appears in 'info breakpoints'"
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gdb_test "info breakpoints" ".*catchpoint.*keep y.*syscall \"<any syscall>\".*" $thistest
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}
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# Internal procedure used to check if, after issuing a 'catch syscall X'
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# command (with arguments), the 'info breakpoints' command displays
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# that the syscall 'X' is to be caught.
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proc check_info_bp_specific_syscall { syscall } {
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global gdb_prompt
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set thistest "syscall(s) $syscall appears in 'info breakpoints'"
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gdb_test "info breakpoints" ".*catchpoint.*keep y.*syscall(\[(\]s\[)\])? (.)?${syscall}(.)?.*" $thistest
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}
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# Internal procedure used to check if, after issuing a 'catch syscall X'
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# command (with many arguments), the 'info breakpoints' command displays
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# that the syscalls 'X' are to be caught.
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proc check_info_bp_many_syscalls { syscalls } {
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global gdb_prompt
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set filter_str ""
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foreach name $syscalls {
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set filter_str "${filter_str}${name}, "
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}
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set filter_str [ string trimright $filter_str ", " ]
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set thistest "syscalls $filter_str appears in 'info breakpoints'"
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gdb_test "info breakpoints" ".*catchpoint.*keep y.*syscalls (.)?${filter_str}(.)?.*" $thistest
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}
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# This procedure checks if there was a call to a syscall.
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proc check_call_to_syscall { syscall } {
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global gdb_prompt
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set thistest "program has called $syscall"
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gdb_test "continue" "Catchpoint .*(call to syscall .?${syscall}.?).*" $thistest
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}
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# This procedure checks if the syscall returned.
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proc check_return_from_syscall { syscall } {
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global gdb_prompt
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set thistest "syscall $syscall has returned"
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gdb_test "continue" "Catchpoint .*(returned from syscall (.)?${syscall}(.)?).*" $thistest
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}
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# Internal procedure that performs two 'continue' commands and checks if
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# a syscall call AND return occur.
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proc check_continue { syscall } {
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global gdb_prompt
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# Testing if the 'continue' stops at the
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# specified syscall_name. If it does, then it should
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# first print that the infeior has called the syscall,
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# and after print that the syscall has returned.
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# Testing if the inferiorr has called the syscall.
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check_call_to_syscall $syscall
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# And now, that the syscall has returned.
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check_return_from_syscall $syscall
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}
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# Inserts a syscall catchpoint with an argument.
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proc insert_catch_syscall_with_arg { syscall } {
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global gdb_prompt
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# Trying to set the catchpoint
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set thistest "catch syscall with arguments ($syscall)"
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gdb_test "catch syscall $syscall" "Catchpoint .*(syscall (.)?${syscall}(.)?( \[\[0-9\]+\])?).*" $thistest
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check_info_bp_specific_syscall $syscall
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}
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# Inserts a syscall catchpoint with many arguments.
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proc insert_catch_syscall_with_many_args { syscalls numbers } {
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global gdb_prompt
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set catch [ join $syscalls " " ]
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set filter_str ""
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foreach name $syscalls number $numbers {
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set filter_str "${filter_str}'${name}' \[${number}\] "
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}
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set filter_str [ string trimright $filter_str " " ]
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# Trying to set the catchpoint
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set thistest "catch syscall with arguments ($filter_str)"
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gdb_test "catch syscall $catch" "Catchpoint .*(syscalls (.)?${filter_str}(.)?).*" $thistest
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check_info_bp_many_syscalls $syscalls
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}
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proc check_for_program_end {} {
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global gdb_prompt
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# Deleting the catchpoints
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delete_breakpoints
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set thistest "successful program end"
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gdb_test "continue" "Program exited normally.*" $thistest
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}
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proc test_catch_syscall_without_args {} {
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global gdb_prompt all_syscalls last_syscall
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# Trying to set the syscall
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set thistest "setting catch syscall without arguments"
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gdb_test "catch syscall" "Catchpoint .*(syscall).*" $thistest
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check_info_bp_any_syscall
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# We have to check every syscall
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foreach name $all_syscalls {
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check_continue $name
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}
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# At last but not least, we check if the inferior
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# has called the last (exit) syscall.
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check_call_to_syscall $last_syscall
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# Now let's see if the inferior correctly finishes.
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check_for_program_end
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}
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proc test_catch_syscall_with_args {} {
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global gdb_prompt
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set syscall_name "close"
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insert_catch_syscall_with_arg $syscall_name
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# Can we continue until we catch the syscall?
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check_continue $syscall_name
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# Now let's see if the inferior correctly finishes.
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check_for_program_end
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}
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proc test_catch_syscall_with_many_args {} {
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global gdb_prompt all_syscalls all_syscalls_numbers
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insert_catch_syscall_with_many_args $all_syscalls $all_syscalls_numbers
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# Can we continue until we catch the syscalls?
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foreach name $all_syscalls {
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check_continue $name
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}
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# Now let's see if the inferior correctly finishes.
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check_for_program_end
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}
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proc test_catch_syscall_with_wrong_args {} {
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global gdb_prompt
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# mlock is not called from the source
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set syscall_name "mlock"
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insert_catch_syscall_with_arg $syscall_name
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# Now, we must verify if the program stops with a continue.
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# If it doesn't, everything is right (since we don't have
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# a syscall named "mlock" in it). Otherwise, this is a failure.
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set thistest "catch syscall with unused syscall ($syscall_name)"
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gdb_test "continue" "Program exited normally.*" $thistest
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}
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proc test_catch_syscall_restarting_inferior {} {
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global gdb_prompt
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set syscall_name "chroot"
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insert_catch_syscall_with_arg $syscall_name
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# Let's first reach the call of the syscall.
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check_call_to_syscall $syscall_name
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# Now, restart the program
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rerun_to_main
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# And check for call/return
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check_continue $syscall_name
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# Can we finish?
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check_for_program_end
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}
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proc do_syscall_tests {} {
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global gdb_prompt srcdir
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# First, we need to set GDB datadir.
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send_gdb "set data-directory $srcdir/..\n"
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gdb_expect 10 {
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-re "$gdb_prompt $" {
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verbose "Setting GDB datadir to $srcdir/..." 2
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}
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timeout {
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error "Couldn't set GDB datadir."
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}
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}
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# Verify that the 'catch syscall' help is available
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set thistest "help catch syscall"
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gdb_test "help catch syscall" "Catch system calls.*" $thistest
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# Try to set a catchpoint to a nonsense syscall
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set thistest "catch syscall to a nonsense syscall is prohibited"
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gdb_test "catch syscall nonsense_syscall" "Unknown syscall name .*" $thistest
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# Testing the 'catch syscall' command without arguments.
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# This test should catch any syscalls.
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if [runto_main] then { test_catch_syscall_without_args }
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# Testing the 'catch syscall' command with arguments.
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# This test should only catch the specified syscall.
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if [runto_main] then { test_catch_syscall_with_args }
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# Testing the 'catch syscall' command with many arguments.
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# This test should catch $all_syscalls.
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if [runto_main] then { test_catch_syscall_with_many_args }
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# Testing the 'catch syscall' command with WRONG arguments.
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# This test should not trigger any catchpoints.
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if [runto_main] then { test_catch_syscall_with_wrong_args }
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# Testing the 'catch' syscall command during a restart of
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# the inferior.
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if [runto_main] then { test_catch_syscall_restarting_inferior }
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}
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proc test_catch_syscall_fail_noxml {} {
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global gdb_prompt
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# Sanitizing.
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delete_breakpoints
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# Testing to see if we receive a warning when calling "catch syscall"
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# without XML support.
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set thistest "Catch syscall displays a warning when there is no XML support"
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gdb_test "catch syscall" "warning: Could not open .*warning: Could not load the syscall XML file .*GDB will not be able to display syscall names.*Catchpoint .*(syscall).*" $thistest
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# Since the catchpoint was set, we must check if it's present at
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# "info breakpoints"
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check_info_bp_any_syscall
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# Sanitizing.
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delete_breakpoints
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}
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proc test_catch_syscall_without_args_noxml {} {
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# We will need the syscall names even not using it
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# because we need to know know many syscalls are in
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# the example file.
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global gdb_prompt all_syscalls last_syscall
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delete_breakpoints
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set thistest "Catch syscall without arguments and without XML support"
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gdb_test "catch syscall" "Catchpoint .*(syscall).*"
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# Now, we should be able to set a catchpoint,
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# and GDB shall not display the warning anymore.
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foreach name $all_syscalls {
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# Unfortunately, we don't know the syscall number
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# that will be caught because this information is
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# arch-dependent. Thus, we try to catch anything
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# similar to a number.
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check_continue "\[0-9\]*"
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}
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# At last but not least, we check if the inferior
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# has called the last (exit) syscall.
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check_call_to_syscall "\[0-9\]*"
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delete_breakpoints
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}
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proc test_catch_syscall_with_args_noxml {} {
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global gdb_prompt
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# The number of the "close" syscall. This is our
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# option for a "long-estabilished" syscall in all
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# Linux architectures, but unfortunately x86_64 and
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# a few other platforms don't "follow the convention".
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# Because of this, we need this ugly check :-(.
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set close_number ""
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if { [istarget "x86_64-*-linux*"] } {
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set close_number "3"
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} else {
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set close_number "6"
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}
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delete_breakpoints
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insert_catch_syscall_with_arg $close_number
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check_continue $close_number
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delete_breakpoints
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}
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proc test_catch_syscall_with_wrong_args_noxml {} {
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global gdb_prompt
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delete_breakpoints
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# Even without XML support, GDB should not accept unknown
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# syscall names for the catchpoint.
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set thistest "Catch a nonsense syscall without XML support"
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gdb_test "catch syscall nonsense_syscall" "Unknown syscall name .nonsense_syscall.*" $thistest
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delete_breakpoints
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}
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proc do_syscall_tests_without_xml {} {
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global gdb_prompt srcdir
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# In this case, we don't need to set GDB's datadir because
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# we want GDB to display only numbers, not names. So, let's
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# begin with the tests.
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# The first test is to see if GDB displays a warning when we
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# try to catch syscalls without the XML support.
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test_catch_syscall_fail_noxml
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# Now, let's test if we can catch syscalls without XML support.
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# We should succeed, but GDB is not supposed to print syscall names.
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if [runto_main] then { test_catch_syscall_without_args_noxml }
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# The only valid argument "catch syscall" should accept is the
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# syscall number, and not the name (since it can't translate a
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# name to a number).
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#
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# It's worth mentioning that we only try to catch the syscall
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# close(). This is because the syscall number is an arch-dependent
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# information, so we can't assume that we know every syscall number
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# in this system. Therefore, we have decided to use a "long-estabilished"
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# system call, and close() just sounded the right choice :-).
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if [runto_main] then { test_catch_syscall_with_args_noxml }
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# Now, we'll try to provide a syscall name (valid or not) to the command,
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# and expect it to fail.
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if [runto_main] then { test_catch_syscall_with_wrong_args_noxml }
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}
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# This procedure fills the vector "all_syscalls_numbers" with the proper
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# numbers for the used syscalls according to the architecture.
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proc fill_all_syscalls_numbers {} {
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global all_syscalls_numbers
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# For Linux on x86, PPC and PPC64, the numbers for the syscalls "close" and
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# "chroot" are the same.
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if { ![istarget "i\[34567\]86-*-linux*"]
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|| ![istarget "powerpc-*-linux*"] || ![istarget "powerpc64-*-linux*"] } {
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set all_syscalls_numbers { "6" "61" }
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}
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}
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# Start with a fresh gdb
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gdb_exit
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gdb_start
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gdb_reinitialize_dir $srcdir/$subdir
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gdb_load ${binfile}
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# Execute the tests, using XML support
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do_syscall_tests
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# Restart gdb
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gdb_exit
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gdb_start
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gdb_reinitialize_dir $srcdir/$subdir
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gdb_load ${binfile}
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# Execute the tests, without XML support. In this case, GDB will
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# only display syscall numbers, and not syscall names.
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do_syscall_tests_without_xml
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@ -0,0 +1,432 @@
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/* Functions that provide the mechanism to parse a syscall XML file
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and get its values.
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Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
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1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006, 2007, 2008
|
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Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 3 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
||||
|
||||
#include "defs.h"
|
||||
#include "gdbtypes.h"
|
||||
#include "xml-support.h"
|
||||
#include "xml-syscall.h"
|
||||
|
||||
/* For the struct syscall definition. */
|
||||
#include "target.h"
|
||||
|
||||
#include "filenames.h"
|
||||
|
||||
#include "gdb_assert.h"
|
||||
|
||||
#ifndef HAVE_LIBEXPAT
|
||||
|
||||
/* Dummy functions to indicate that there's no support for fetching
|
||||
syscalls information. */
|
||||
|
||||
static void
|
||||
syscall_warn_user (void)
|
||||
{
|
||||
static int have_warned = 0;
|
||||
if (!have_warned)
|
||||
{
|
||||
have_warned = 1;
|
||||
warning (_("Can not parse XML syscalls information; XML support was "
|
||||
"disabled at compile time."));
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
set_xml_syscall_file_name (const char *name)
|
||||
{
|
||||
syscall_warn_user ();
|
||||
}
|
||||
|
||||
void
|
||||
get_syscall_by_number (int syscall_number,
|
||||
struct syscall *s)
|
||||
{
|
||||
syscall_warn_user ();
|
||||
s->number = syscall_number;
|
||||
s->name = NULL;
|
||||
}
|
||||
|
||||
void
|
||||
get_syscall_by_name (const char *syscall_name,
|
||||
struct syscall *s)
|
||||
{
|
||||
syscall_warn_user ();
|
||||
s->number = UNKNOWN_SYSCALL;
|
||||
s->name = syscall_name;
|
||||
}
|
||||
|
||||
const char **
|
||||
get_syscall_names (void)
|
||||
{
|
||||
syscall_warn_user ();
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
#else /* ! HAVE_LIBEXPAT */
|
||||
|
||||
/* Structure which describes a syscall. */
|
||||
typedef struct syscall_desc
|
||||
{
|
||||
/* The syscall number. */
|
||||
|
||||
int number;
|
||||
|
||||
/* The syscall name. */
|
||||
|
||||
char *name;
|
||||
} *syscall_desc_p;
|
||||
DEF_VEC_P(syscall_desc_p);
|
||||
|
||||
/* Structure that represents syscalls information. */
|
||||
struct syscalls_info
|
||||
{
|
||||
/* The syscalls. */
|
||||
|
||||
VEC(syscall_desc_p) *syscalls;
|
||||
};
|
||||
|
||||
/* Callback data for syscall information parsing. */
|
||||
struct syscall_parsing_data
|
||||
{
|
||||
/* The syscalls_info we are building. */
|
||||
|
||||
struct syscalls_info *sysinfo;
|
||||
};
|
||||
|
||||
/* Structure used to store information about the available syscalls in
|
||||
the system. */
|
||||
static const struct syscalls_info *_sysinfo = NULL;
|
||||
|
||||
/* A flag to tell if we already initialized the structure above. */
|
||||
static int have_initialized_sysinfo = 0;
|
||||
|
||||
/* The filename of the syscall's XML. */
|
||||
static const char *xml_syscall_file = NULL;
|
||||
|
||||
static struct syscalls_info *
|
||||
allocate_syscalls_info (void)
|
||||
{
|
||||
return XZALLOC (struct syscalls_info);
|
||||
}
|
||||
|
||||
static void
|
||||
sysinfo_free_syscalls_desc (struct syscall_desc *sd)
|
||||
{
|
||||
xfree (sd->name);
|
||||
}
|
||||
|
||||
static void
|
||||
free_syscalls_info (void *arg)
|
||||
{
|
||||
struct syscalls_info *sysinfo = arg;
|
||||
struct syscall_desc *sysdesc;
|
||||
int i;
|
||||
|
||||
for (i = 0;
|
||||
VEC_iterate (syscall_desc_p, sysinfo->syscalls, i, sysdesc);
|
||||
i++)
|
||||
sysinfo_free_syscalls_desc (sysdesc);
|
||||
VEC_free (syscall_desc_p, sysinfo->syscalls);
|
||||
|
||||
xfree (sysinfo);
|
||||
}
|
||||
|
||||
struct cleanup *
|
||||
make_cleanup_free_syscalls_info (struct syscalls_info *sysinfo)
|
||||
{
|
||||
return make_cleanup (free_syscalls_info, sysinfo);
|
||||
}
|
||||
|
||||
static void
|
||||
syscall_create_syscall_desc (struct syscalls_info *sysinfo,
|
||||
const char *name, int number)
|
||||
{
|
||||
struct syscall_desc *sysdesc = XZALLOC (struct syscall_desc);
|
||||
|
||||
sysdesc->name = xstrdup (name);
|
||||
sysdesc->number = number;
|
||||
|
||||
VEC_safe_push (syscall_desc_p, sysinfo->syscalls, sysdesc);
|
||||
}
|
||||
|
||||
/* Handle the start of a <syscalls_info> element. */
|
||||
static void
|
||||
syscall_start_syscalls_info (struct gdb_xml_parser *parser,
|
||||
const struct gdb_xml_element *element,
|
||||
void *user_data,
|
||||
VEC(gdb_xml_value_s) *attributes)
|
||||
{
|
||||
struct syscall_parsing_data *data = user_data;
|
||||
struct syscalls_info *sysinfo = data->sysinfo;
|
||||
}
|
||||
|
||||
/* Handle the start of a <syscall> element. */
|
||||
static void
|
||||
syscall_start_syscall (struct gdb_xml_parser *parser,
|
||||
const struct gdb_xml_element *element,
|
||||
void *user_data, VEC(gdb_xml_value_s) *attributes)
|
||||
{
|
||||
struct syscall_parsing_data *data = user_data;
|
||||
struct gdb_xml_value *attrs = VEC_address (gdb_xml_value_s, attributes);
|
||||
int len, i;
|
||||
/* syscall info. */
|
||||
char *name = NULL;
|
||||
int number = 0;
|
||||
|
||||
len = VEC_length (gdb_xml_value_s, attributes);
|
||||
|
||||
for (i = 0; i < len; i++)
|
||||
{
|
||||
if (strcmp (attrs[i].name, "name") == 0)
|
||||
name = attrs[i].value;
|
||||
else if (strcmp (attrs[i].name, "number") == 0)
|
||||
number = * (ULONGEST *) attrs[i].value;
|
||||
else
|
||||
internal_error (__FILE__, __LINE__,
|
||||
_("Unknown attribute name '%s'."), attrs[i].name);
|
||||
}
|
||||
|
||||
syscall_create_syscall_desc (data->sysinfo, name, number);
|
||||
}
|
||||
|
||||
|
||||
/* The elements and attributes of an XML syscall document. */
|
||||
static const struct gdb_xml_attribute syscall_attr[] = {
|
||||
{ "number", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
|
||||
{ "name", GDB_XML_AF_NONE, NULL, NULL },
|
||||
{ NULL, GDB_XML_AF_NONE, NULL, NULL }
|
||||
};
|
||||
|
||||
static const struct gdb_xml_element syscalls_info_children[] = {
|
||||
{ "syscall", syscall_attr, NULL,
|
||||
GDB_XML_EF_OPTIONAL | GDB_XML_EF_REPEATABLE,
|
||||
syscall_start_syscall, NULL },
|
||||
{ NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
|
||||
};
|
||||
|
||||
static const struct gdb_xml_element syselements[] = {
|
||||
{ "syscalls_info", NULL, syscalls_info_children,
|
||||
GDB_XML_EF_NONE, syscall_start_syscalls_info, NULL },
|
||||
{ NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
|
||||
};
|
||||
|
||||
static struct syscalls_info *
|
||||
syscall_parse_xml (const char *document, xml_fetch_another fetcher,
|
||||
void *fetcher_baton)
|
||||
{
|
||||
struct cleanup *result_cleanup;
|
||||
struct gdb_xml_parser *parser;
|
||||
struct syscall_parsing_data data;
|
||||
char *expanded_text;
|
||||
int i;
|
||||
|
||||
parser = gdb_xml_create_parser_and_cleanup (_("syscalls info"),
|
||||
syselements, &data);
|
||||
|
||||
memset (&data, 0, sizeof (struct syscall_parsing_data));
|
||||
data.sysinfo = allocate_syscalls_info ();
|
||||
result_cleanup = make_cleanup_free_syscalls_info (data.sysinfo);
|
||||
|
||||
if (gdb_xml_parse (parser, document) == 0)
|
||||
{
|
||||
/* Parsed successfully. */
|
||||
discard_cleanups (result_cleanup);
|
||||
return data.sysinfo;
|
||||
}
|
||||
else
|
||||
{
|
||||
warning (_("Could not load XML syscalls info; ignoring"));
|
||||
do_cleanups (result_cleanup);
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
|
||||
/* Function responsible for initializing the information
|
||||
about the syscalls. It reads the XML file and fills the
|
||||
struct syscalls_info with the values.
|
||||
|
||||
Returns the struct syscalls_info if the file is valid, NULL otherwise. */
|
||||
static const struct syscalls_info *
|
||||
xml_init_syscalls_info (const char *filename)
|
||||
{
|
||||
char *full_file;
|
||||
char *dirname;
|
||||
struct syscalls_info *sysinfo;
|
||||
struct cleanup *back_to;
|
||||
|
||||
full_file = xml_fetch_content_from_file (filename, gdb_datadir);
|
||||
if (full_file == NULL)
|
||||
{
|
||||
warning (_("Could not open \"%s\""), filename);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
back_to = make_cleanup (xfree, full_file);
|
||||
|
||||
dirname = ldirname (filename);
|
||||
if (dirname != NULL)
|
||||
make_cleanup (xfree, dirname);
|
||||
|
||||
sysinfo = syscall_parse_xml (full_file, xml_fetch_content_from_file, dirname);
|
||||
do_cleanups (back_to);
|
||||
|
||||
return sysinfo;
|
||||
}
|
||||
|
||||
/* Initializes the syscalls_info structure according to the
|
||||
architecture. */
|
||||
static void
|
||||
init_sysinfo (void)
|
||||
{
|
||||
/* Did we already try to initialize the structure? */
|
||||
if (have_initialized_sysinfo)
|
||||
return;
|
||||
/* if (xml_syscall_file == NULL)
|
||||
internal_error (__FILE__, __LINE__,
|
||||
_("This architecture has not set the XML syscall file "
|
||||
"name. This is a bug and should not happen; please "
|
||||
"report it.")); */
|
||||
|
||||
_sysinfo = xml_init_syscalls_info (xml_syscall_file);
|
||||
|
||||
have_initialized_sysinfo = 1;
|
||||
|
||||
if (_sysinfo == NULL)
|
||||
{
|
||||
if (xml_syscall_file)
|
||||
/* The initialization failed. Let's show a warning
|
||||
message to the user (just this time) and leave. */
|
||||
warning (_("Could not load the syscall XML file `%s'.\n\
|
||||
GDB will not be able to display syscall names."), xml_syscall_file);
|
||||
else
|
||||
/* There's no file to open. Let's warn the user. */
|
||||
warning (_("There is no XML file to open.\n\
|
||||
GDB will not be able to display syscall names."));
|
||||
}
|
||||
}
|
||||
|
||||
static int
|
||||
xml_get_syscall_number (const struct syscalls_info *sysinfo,
|
||||
const char *syscall_name)
|
||||
{
|
||||
struct syscall_desc *sysdesc;
|
||||
int i;
|
||||
|
||||
if (sysinfo == NULL
|
||||
|| syscall_name == NULL)
|
||||
return UNKNOWN_SYSCALL;
|
||||
|
||||
for (i = 0;
|
||||
VEC_iterate(syscall_desc_p, sysinfo->syscalls, i, sysdesc);
|
||||
i++)
|
||||
if (strcmp (sysdesc->name, syscall_name) == 0)
|
||||
return sysdesc->number;
|
||||
|
||||
return UNKNOWN_SYSCALL;
|
||||
}
|
||||
|
||||
static const char *
|
||||
xml_get_syscall_name (const struct syscalls_info *sysinfo,
|
||||
int syscall_number)
|
||||
{
|
||||
struct syscall_desc *sysdesc;
|
||||
int i;
|
||||
|
||||
if (sysinfo == NULL
|
||||
|| syscall_number < 0)
|
||||
return NULL;
|
||||
|
||||
for (i = 0;
|
||||
VEC_iterate(syscall_desc_p, sysinfo->syscalls, i, sysdesc);
|
||||
i++)
|
||||
if (sysdesc->number == syscall_number)
|
||||
return sysdesc->name;
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static int
|
||||
xml_number_of_syscalls (const struct syscalls_info *sysinfo)
|
||||
{
|
||||
return (sysinfo == NULL ? 0 : VEC_length (syscall_desc_p,
|
||||
sysinfo->syscalls));
|
||||
}
|
||||
|
||||
static const char **
|
||||
xml_list_of_syscalls (const struct syscalls_info *sysinfo)
|
||||
{
|
||||
struct syscall_desc *sysdesc;
|
||||
const char **names = NULL;
|
||||
int nsyscalls;
|
||||
int i;
|
||||
|
||||
if (sysinfo == NULL)
|
||||
return NULL;
|
||||
|
||||
nsyscalls = VEC_length (syscall_desc_p, sysinfo->syscalls);
|
||||
names = xmalloc ((nsyscalls + 1) * sizeof (char *));
|
||||
|
||||
for (i = 0;
|
||||
VEC_iterate (syscall_desc_p, sysinfo->syscalls, i, sysdesc);
|
||||
i++)
|
||||
names[i] = sysdesc->name;
|
||||
|
||||
names[i] = NULL;
|
||||
|
||||
return names;
|
||||
}
|
||||
|
||||
void
|
||||
set_xml_syscall_file_name (const char *name)
|
||||
{
|
||||
xml_syscall_file = name;
|
||||
}
|
||||
|
||||
void
|
||||
get_syscall_by_number (int syscall_number,
|
||||
struct syscall *s)
|
||||
{
|
||||
init_sysinfo ();
|
||||
|
||||
s->number = syscall_number;
|
||||
s->name = xml_get_syscall_name (_sysinfo, syscall_number);
|
||||
}
|
||||
|
||||
void
|
||||
get_syscall_by_name (const char *syscall_name,
|
||||
struct syscall *s)
|
||||
{
|
||||
init_sysinfo ();
|
||||
|
||||
s->number = xml_get_syscall_number (_sysinfo, syscall_name);
|
||||
s->name = syscall_name;
|
||||
}
|
||||
|
||||
const char **
|
||||
get_syscall_names (void)
|
||||
{
|
||||
init_sysinfo ();
|
||||
|
||||
return xml_list_of_syscalls (_sysinfo);
|
||||
}
|
||||
|
||||
#endif /* ! HAVE_LIBEXPAT */
|
||||
|
|
@ -0,0 +1,50 @@
|
|||
/* Functions that provide the mechanism to parse a syscall XML file
|
||||
and get its values.
|
||||
|
||||
Copyright (C) 2009 Free Software Foundation, Inc.
|
||||
|
||||
This file is part of GDB.
|
||||
|
||||
This program is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 3 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
||||
|
||||
#ifndef XML_SYSCALL_H
|
||||
#define XML_SYSCALL_H 1
|
||||
|
||||
/* Function used to set the name of the file which contains
|
||||
information about the system calls present in the current
|
||||
architecture.
|
||||
|
||||
This function *should* be called before anything else, otherwise
|
||||
GDB won't be able to find the correct XML file to open and get
|
||||
the syscalls definitions. */
|
||||
|
||||
void set_xml_syscall_file_name (const char *name);
|
||||
|
||||
/* Function that retrieves the syscall name corresponding to the given
|
||||
number. It puts the requested information inside 'struct syscall'. */
|
||||
|
||||
void get_syscall_by_number (int syscall_number, struct syscall *s);
|
||||
|
||||
/* Function that retrieves the syscall number corresponding to the given
|
||||
name. It puts the requested information inside 'struct syscall'. */
|
||||
|
||||
void get_syscall_by_name (const char *syscall_name, struct syscall *s);
|
||||
|
||||
/* Function used to retrieve the list of syscalls in the system. This list
|
||||
is returned as an array of strings. Returns the list of syscalls in the
|
||||
system, or NULL otherwise. */
|
||||
|
||||
const char **get_syscall_names (void);
|
||||
|
||||
#endif /* XML_SYSCALL_H */
|
||||
Loading…
Reference in New Issue