gdb: add target_ops::supports_displaced_step

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

diff --git a/gdb/i386-linux-tdep.h b/gdb/i386-linux-tdep.h
index 089268ac0916e7b7a82beac112f0779214654b24..b54352694a362eae1853ee6fe6e3a67a2128aedf 100644 (file)
--- a/gdb/i386-linux-tdep.h
+++ b/gdb/i386-linux-tdep.h
@@ -1,12 +1,12 @@
 /* Target-dependent code for GNU/Linux x86.
 
-   Copyright 2002, 2003 Free Software Foundation, Inc.
+   Copyright (C) 2002-2020 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 2 of the License, or
+   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,
@@ -15,9 +15,7 @@
    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, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #ifndef I386_LINUX_TDEP_H
 #define I386_LINUX_TDEP_H
@@ -31,9 +29,52 @@
 /* Register number for the "orig_eax" pseudo-register.  If this
    pseudo-register contains a value >= 0 it is interpreted as the
    system call number that the kernel is supposed to restart.  */
-#define I386_LINUX_ORIG_EAX_REGNUM I386_SSE_NUM_REGS
+#define I386_LINUX_ORIG_EAX_REGNUM (I386_PKRU_REGNUM + 1)
 
 /* Total number of registers for GNU/Linux.  */
 #define I386_LINUX_NUM_REGS (I386_LINUX_ORIG_EAX_REGNUM + 1)
 
+/* Get XSAVE extended state xcr0 from core dump.  */
+extern uint64_t i386_linux_core_read_xcr0 (bfd *abfd);
+
+/* Handle and display information related to the MPX bound violation
+   to the user.  */
+extern void i386_linux_handle_segmentation_fault (struct gdbarch *gdbarch,
+                                                 struct ui_out *uiout);
+
+/* Return the target description according to XCR0.  */
+extern const struct target_desc *i386_linux_read_description (uint64_t xcr0);
+
+/* Format of XSAVE extended state is:
+       struct
+       {
+         fxsave_bytes[0..463]
+         sw_usable_bytes[464..511]
+         xstate_hdr_bytes[512..575]
+         avx_bytes[576..831]
+         mpx_bytes [960..1032]
+         avx512_k_regs[1088..1152]
+         avx512_zmmh_regs0-7[1153..1407]
+         avx512_zmmh_regs8-15[1408..1663]
+         avx512_zmm_regs16-31[1664..2687]
+         pkru[2688..2752]
+         future_state etc
+       };
+
+  Same memory layout will be used for the coredump NT_X86_XSTATE
+  representing the XSAVE extended state registers.
+
+  The first 8 bytes of the sw_usable_bytes[464..467] is the OS enabled
+  extended state mask, which is the same as the extended control register
+  0 (the XFEATURE_ENABLED_MASK register), XCR0.  We can use this mask
+  together with the mask saved in the xstate_hdr_bytes to determine what
+  states the processor/OS supports and what state, used or initialized,
+  the process/thread is in.  */ 
+#define I386_LINUX_XSAVE_XCR0_OFFSET 464
+
+extern int i386_linux_gregset_reg_offset[];
+
+/* Return x86 siginfo type.  */
+extern struct type *x86_linux_get_siginfo_type (struct gdbarch *gdbarch);
+
 #endif /* i386-linux-tdep.h */