Antoine Tremblay c9587f8823 Fix non executable stack handling when calling functions in the inferior. ... When gdb creates a dummy frame to execute a function in the inferior, the process may generate a SIGSEGV, SIGTRAP or SIGILL because the stack is non executable. If the signal handler set in gdb has option print or stop enabled for these signals gdb handles this correctly. However, in the case of noprint and nostop the signal is short-circuited and the inferior process is sent the signal directly. This causes the inferior to crash because of gdb. This patch adds a check for SIGSEGV, SIGTRAP or SIGILL so that these signals are sent to gdb rather than short-circuited in the inferior. gdb then handles them properly and the inferior process does not crash. This patch also fixes the same behavior in gdbserver. Also added a small testcase to test the issue called catch-gdb-caused-signals. This applies to Linux only, tested on Linux. gdb/ChangeLog: PR breakpoints/16812 * linux-nat.c (linux_nat_filter_event): Report SIGTRAP,SIGILL,SIGSEGV. * nat/linux-ptrace.c (linux_wstatus_maybe_breakpoint): Add. * nat/linux-ptrace.h: Add linux_wstatus_maybe_breakpoint. gdb/gdbserver/ChangeLog: PR breakpoints/16812 * linux-low.c (wstatus_maybe_breakpoint): Remove. (linux_low_filter_event): Update wstatus_maybe_breakpoint name. (linux_wait_1): Report SIGTRAP,SIGILL,SIGSEGV. gdb/testsuite/ChangeLog: PR breakpoints/16812 * gdb.base/catch-gdb-caused-signals.c: New file. * gdb.base/catch-gdb-caused-signals.exp: New file.		2015-02-19 11:04:21 -05:00
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gdb_thread_db.h	Move shared native target specific code to gdb/nat	2014-06-20 14:06:48 +01:00
glibc_thread_db.h	Move shared native target specific code to gdb/nat	2014-06-20 14:06:48 +01:00
linux-btrace.c	btrace: identify cpu	2015-02-09 09:49:15 +01:00
linux-btrace.h	record btrace: add configuration struct	2015-02-09 09:38:55 +01:00
linux-nat.h	Update year range in copyright notice of all files owned by the GDB project.	2015-01-01 13:32:14 +04:00
linux-osdata.c	Update year range in copyright notice of all files owned by the GDB project.	2015-01-01 13:32:14 +04:00
linux-osdata.h	Update year range in copyright notice of all files owned by the GDB project.	2015-01-01 13:32:14 +04:00
linux-personality.c	Fix nat/linux-personality.c regression on RHEL-5	2015-01-16 11:42:28 -05:00
linux-personality.h	Move code to disable ASR to nat/	2015-01-15 15:10:49 -05:00
linux-procfs.c	[ARI] Remove trailing new-line in argument of call to warning.	2015-01-13 14:38:19 +04:00
linux-procfs.h	Linux: on attach, attach to lwps listed under /proc/$pid/task/	2015-01-09 11:39:49 +00:00
linux-ptrace.c	Fix non executable stack handling when calling functions in the inferior.	2015-02-19 11:04:21 -05:00
linux-ptrace.h	Fix non executable stack handling when calling functions in the inferior.	2015-02-19 11:04:21 -05:00
linux-waitpid.c	Update year range in copyright notice of all files owned by the GDB project.	2015-01-01 13:32:14 +04:00
linux-waitpid.h	Update year range in copyright notice of all files owned by the GDB project.	2015-01-01 13:32:14 +04:00
mips-linux-watch.c	Update year range in copyright notice of all files owned by the GDB project.	2015-01-01 13:32:14 +04:00
mips-linux-watch.h	Update year range in copyright notice of all files owned by the GDB project.	2015-01-01 13:32:14 +04:00
ppc-linux.c	Detect 64-bit-ness in PowerPC Book III-E	2015-01-14 22:28:27 +08:00
ppc-linux.h	Detect 64-bit-ness in PowerPC Book III-E	2015-01-14 22:28:27 +08:00
x86-cpuid.h	Update year range in copyright notice of all files owned by the GDB project.	2015-01-01 13:32:14 +04:00
x86-dregs.c	Update year range in copyright notice of all files owned by the GDB project.	2015-01-01 13:32:14 +04:00
x86-dregs.h	Update year range in copyright notice of all files owned by the GDB project.	2015-01-01 13:32:14 +04:00
x86-gcc-cpuid.h	Update year range in copyright notice of all files owned by the GDB project.	2015-01-01 13:32:14 +04:00