2012-03-01 Pedro Alves <palves@redhat.com>

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

diff --git a/gdb/i386-linux-tdep.h b/gdb/i386-linux-tdep.h
index 7cb4feba58936e282e6bfbadf0dab27bfc07f853..c3a316fb604daea073236fbaee52b69a7862b852 100644 (file)
--- a/gdb/i386-linux-tdep.h
+++ b/gdb/i386-linux-tdep.h
@@ -1,6 +1,6 @@
 /* Target-dependent code for GNU/Linux x86.
 
-   Copyright (C) 2002, 2003, 2007, 2008 Free Software Foundation, Inc.
+   Copyright (C) 2002-2003, 2007-2012 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -29,9 +29,41 @@
 /* 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_AVX_NUM_REGS
 
 /* 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
+  (struct gdbarch *gdbarch, struct target_ops *target, bfd *abfd);
+
+/* Linux target description.  */
+extern struct target_desc *tdesc_i386_linux;
+extern struct target_desc *tdesc_i386_mmx_linux;
+extern struct target_desc *tdesc_i386_avx_linux;
+
+/* 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]
+         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[];
+
 #endif /* i386-linux-tdep.h */