Intel(R) Memory Protection Extensions (Intel(R) MPX) support.

Summary:

The Intel(R) Memory Protection Extensions (Intel(R) MPX) associates pointers
to bounds, against which the software can check memory references to
prevent out of bound memory access.

This patch allows accessing the MPX registers:
  * bnd0-3: 128-bit registers to hold the bound values,
  * bndcfgu, bndstatus: 64-bit configuration registers,

This patch also adds read/write tests for the MPX registers in the register
command tests and adds a new subdirectory for MPX specific tests.

Signed-off-by: Valentina Giusti <valentina.giusti@intel.com>

Reviewers: labath, granata.enrico, lldb-commits, clayborg

Subscribers: lldb-commits

Differential Revision: https://reviews.llvm.org/D24187

llvm-svn: 280668

1 files changed, 28 insertions, 2 deletions

diff --git a/lldb/source/Plugins/Process/Utility/lldb-x86-register-enums.h b/lldb/source/Plugins/Process/Utility/lldb-x86-register-enums.h
index 63027b4451b..b33dd86472b 100644
--- a/lldb/source/Plugins/Process/Utility/lldb-x86-register-enums.h
+++ b/lldb/source/Plugins/Process/Utility/lldb-x86-register-enums.h
@@ -106,6 +106,18 @@ namespace lldb_private
         lldb_ymm7_i386,
         k_last_avx_i386 = lldb_ymm7_i386,
 
+        k_first_mpxr_i386,
+        lldb_bnd0_i386 = k_first_mpxr_i386,
+        lldb_bnd1_i386,
+        lldb_bnd2_i386,
+        lldb_bnd3_i386,
+        k_last_mpxr = lldb_bnd3_i386,
+
+        k_first_mpxc_i386,
+        lldb_bndcfgu_i386 = k_first_mpxc_i386,
+        lldb_bndstatus_i386,
+        k_last_mpxc_i386 = lldb_bndstatus_i386,
+
         lldb_dr0_i386,
         lldb_dr1_i386,
         lldb_dr2_i386,
@@ -119,7 +131,8 @@ namespace lldb_private
         k_num_gpr_registers_i386 = k_last_gpr_i386 - k_first_gpr_i386 + 1,
         k_num_fpr_registers_i386 = k_last_fpr_i386 - k_first_fpr_i386 + 1,
         k_num_avx_registers_i386 = k_last_avx_i386 - k_first_avx_i386 + 1,
-        k_num_user_registers_i386 = k_num_gpr_registers_i386 + k_num_fpr_registers_i386 + k_num_avx_registers_i386,
+        k_num_mpx_registers_i386 = k_last_mpxc_i386 - k_first_mpxr_i386 + 1,
+        k_num_user_registers_i386 = k_num_gpr_registers_i386 + k_num_fpr_registers_i386 + k_num_avx_registers_i386 + k_num_mpx_registers_i386,
     };
 
     //---------------------------------------------------------------------------
@@ -274,6 +287,18 @@ namespace lldb_private
         lldb_ymm15_x86_64,
         k_last_avx_x86_64 = lldb_ymm15_x86_64,
 
+        k_first_mpxr_x86_64,
+        lldb_bnd0_x86_64 = k_first_mpxr_x86_64,
+        lldb_bnd1_x86_64,
+        lldb_bnd2_x86_64,
+        lldb_bnd3_x86_64,
+        k_last_mpxr_x86_64 = lldb_bnd3_x86_64,
+
+        k_first_mpxc_x86_64,
+        lldb_bndcfgu_x86_64 = k_first_mpxc_x86_64,
+        lldb_bndstatus_x86_64,
+        k_last_mpxc_x86_64 = lldb_bndstatus_x86_64,
+
         lldb_dr0_x86_64,
         lldb_dr1_x86_64,
         lldb_dr2_x86_64,
@@ -287,7 +312,8 @@ namespace lldb_private
         k_num_gpr_registers_x86_64 = k_last_gpr_x86_64 - k_first_gpr_x86_64 + 1,
         k_num_fpr_registers_x86_64 = k_last_fpr_x86_64 - k_first_fpr_x86_64 + 1,
         k_num_avx_registers_x86_64 = k_last_avx_x86_64 - k_first_avx_x86_64 + 1,
-        k_num_user_registers_x86_64 = k_num_gpr_registers_x86_64 + k_num_fpr_registers_x86_64 + k_num_avx_registers_x86_64,
+        k_num_mpx_registers_x86_64 = k_last_mpxc_x86_64 - k_first_mpxr_x86_64 + 1,
+        k_num_user_registers_x86_64 = k_num_gpr_registers_x86_64 + k_num_fpr_registers_x86_64 + k_num_avx_registers_x86_64 + k_num_mpx_registers_x86_64,
     };
 
 }