diff options
| -rw-r--r-- | gdb/ChangeLog | 6 | ||||
| -rw-r--r-- | gdb/nat/linux-ptrace.c | 22 |
2 files changed, 16 insertions, 12 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 3a5e870..2f3710d 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,11 @@ 2016-07-26 Pedro Alves <palves@redhat.com> + * nat/linux-ptrace.c: Include "gregset.h". + (linux_ptrace_test_ret_to_nx): Use PTRACE_GETREGS instead of + PTRACE_PEEKUSER. + +2016-07-26 Pedro Alves <palves@redhat.com> + * amd64-linux-nat.c (amd64_linux_siginfo_fixup): Rename 'native' parameter to 'ptrace'. * nat/amd64-linux-siginfo.c (GDB_SI_SIZE): New define. diff --git a/gdb/nat/linux-ptrace.c b/gdb/nat/linux-ptrace.c index 0eaf9a3..980ed53 100644 --- a/gdb/nat/linux-ptrace.c +++ b/gdb/nat/linux-ptrace.c @@ -23,6 +23,7 @@ #include "buffer.h" #include "gdb_wait.h" #include "gdb_ptrace.h" +#include "gregset.h" /* Stores the ptrace options supported by the running kernel. A value of -1 means we did not check for features yet. A value @@ -100,6 +101,7 @@ linux_ptrace_test_ret_to_nx (void) gdb_byte *return_address, *pc; long l; int status, kill_status; + elf_gregset_t regs; return_address = (gdb_byte *) mmap (NULL, 2, PROT_READ | PROT_WRITE, @@ -188,23 +190,19 @@ linux_ptrace_test_ret_to_nx (void) return; } - errno = 0; + if (ptrace (PTRACE_GETREGS, child, (PTRACE_TYPE_ARG3) 0, + (PTRACE_TYPE_ARG4) ®s) < 0) + { + warning (_("linux_ptrace_test_ret_to_nx: Cannot PTRACE_GETREGS: %s"), + safe_strerror (errno)); + } #if defined __i386__ - l = ptrace (PTRACE_PEEKUSER, child, (PTRACE_TYPE_ARG3) (uintptr_t) (EIP * 4), - (PTRACE_TYPE_ARG4) NULL); + pc = (gdb_byte *) (uintptr_t) regs[EIP]; #elif defined __x86_64__ - l = ptrace (PTRACE_PEEKUSER, child, (PTRACE_TYPE_ARG3) (uintptr_t) (RIP * 8), - (PTRACE_TYPE_ARG4) NULL); + pc = (gdb_byte *) (uintptr_t) regs[RIP]; #else # error "!__i386__ && !__x86_64__" #endif - if (errno != 0) - { - warning (_("linux_ptrace_test_ret_to_nx: Cannot PTRACE_PEEKUSER: %s"), - safe_strerror (errno)); - return; - } - pc = (gdb_byte *) (uintptr_t) l; kill (child, SIGKILL); ptrace (PTRACE_KILL, child, (PTRACE_TYPE_ARG3) NULL, |