Fix incorrect reference to source files

[deliverable/binutils-gdb.git] / gdb / i386-linux-tdep.c

diff --git a/gdb/i386-linux-tdep.c b/gdb/i386-linux-tdep.c
index 1e491e762aaadaf13fd59953fc45de5ae48582b2..c2f23e5f38d0e561629e0d39d40a5b305b1d8c7e 100644 (file)
--- a/gdb/i386-linux-tdep.c
+++ b/gdb/i386-linux-tdep.c
@@ -30,6 +30,7 @@
 #include "i386-tdep.h"
 #include "i386-linux-tdep.h"
 #include "linux-tdep.h"
+#include "utils.h"
 #include "glibc-tdep.h"
 #include "solib-svr4.h"
 #include "symtab.h"
@@ -47,6 +48,7 @@
 #include "features/i386/i386-linux.c"
 #include "features/i386/i386-mmx-linux.c"
 #include "features/i386/i386-mpx-linux.c"
+#include "features/i386/i386-avx-mpx-linux.c"
 #include "features/i386/i386-avx-linux.c"
 #include "features/i386/i386-avx512-linux.c"
 
@@ -384,6 +386,67 @@ i386_canonicalize_syscall (int syscall)
     return gdb_sys_no_syscall;
 }
 
+/* Value of the sigcode in case of a boundary fault.  */
+
+#define SIG_CODE_BONDARY_FAULT 3
+
+/* i386 GNU/Linux implementation of the handle_segmentation_fault
+   gdbarch hook.  Displays information related to MPX bound
+   violations.  */
+void
+i386_linux_handle_segmentation_fault (struct gdbarch *gdbarch,
+                                     struct ui_out *uiout)
+{
+  /* -Wmaybe-uninitialized  */
+  CORE_ADDR lower_bound = 0, upper_bound = 0, access = 0;
+  int is_upper;
+  long sig_code = 0;
+
+  if (!i386_mpx_enabled ())
+    return;
+
+  TRY
+    {
+      /* Sigcode evaluates if the actual segfault is a boundary violation.  */
+      sig_code = parse_and_eval_long ("$_siginfo.si_code\n");
+
+      lower_bound
+        = parse_and_eval_long ("$_siginfo._sifields._sigfault._addr_bnd._lower");
+      upper_bound
+        = parse_and_eval_long ("$_siginfo._sifields._sigfault._addr_bnd._upper");
+      access
+        = parse_and_eval_long ("$_siginfo._sifields._sigfault.si_addr");
+    }
+  CATCH (exception, RETURN_MASK_ALL)
+    {
+      return;
+    }
+  END_CATCH
+
+  /* If this is not a boundary violation just return.  */
+  if (sig_code != SIG_CODE_BONDARY_FAULT)
+    return;
+
+  is_upper = (access > upper_bound ? 1 : 0);
+
+  uiout->text ("\n");
+  if (is_upper)
+    uiout->field_string ("sigcode-meaning", _("Upper bound violation"));
+  else
+    uiout->field_string ("sigcode-meaning", _("Lower bound violation"));
+
+  uiout->text (_(" while accessing address "));
+  uiout->field_fmt ("bound-access", "%s", paddress (gdbarch, access));
+
+  uiout->text (_("\nBounds: [lower = "));
+  uiout->field_fmt ("lower-bound", "%s", paddress (gdbarch, lower_bound));
+
+  uiout->text (_(", upper = "));
+  uiout->field_fmt ("upper-bound", "%s", paddress (gdbarch, upper_bound));
+
+  uiout->text (_("]"));
+}
+
 /* Parse the arguments of current system call instruction and record
    the values of the registers and memory that will be changed into
    "record_arch_list".  This instruction is "int 0x80" (Linux
@@ -630,6 +693,8 @@ i386_linux_core_read_description (struct gdbarch *gdbarch,
       return tdesc_i386_avx512_linux;
     case X86_XSTATE_MPX_MASK:
       return tdesc_i386_mpx_linux;
+    case X86_XSTATE_AVX_MPX_MASK:
+      return tdesc_i386_avx_mpx_linux;
     case X86_XSTATE_AVX_MASK:
       return tdesc_i386_avx_linux;
     case X86_XSTATE_SSE_MASK:
@@ -656,6 +721,12 @@ i386_linux_supply_xstateregset (const struct regset *regset,
   i387_supply_xsave (regcache, regnum, xstateregs);
 }
 
+struct type *
+x86_linux_get_siginfo_type (struct gdbarch *gdbarch)
+{
+  return linux_get_siginfo_type_with_fields (gdbarch, LINUX_SIGINFO_FIELD_ADDR_BND);
+}
+
 /* Similar to i386_collect_fpregset, but use XSAVE extended state.  */
 
 static void
@@ -994,6 +1065,10 @@ i386_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   set_xml_syscall_file_name (gdbarch, XML_SYSCALL_FILENAME_I386);
   set_gdbarch_get_syscall_number (gdbarch,
                                   i386_linux_get_syscall_number);
+
+  set_gdbarch_get_siginfo_type (gdbarch, x86_linux_get_siginfo_type);
+  set_gdbarch_handle_segmentation_fault (gdbarch,
+                                        i386_linux_handle_segmentation_fault);
 }
 
 /* Provide a prototype to silence -Wmissing-prototypes.  */
@@ -1010,5 +1085,6 @@ _initialize_i386_linux_tdep (void)
   initialize_tdesc_i386_mmx_linux ();
   initialize_tdesc_i386_avx_linux ();
   initialize_tdesc_i386_mpx_linux ();
+  initialize_tdesc_i386_avx_mpx_linux ();
   initialize_tdesc_i386_avx512_linux ();
 }