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[binutils-gdb] gdbserver: xtensa: support THREADPTR register


https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=a12e714b775ce025444af15dcfbd5a420363ad53

commit a12e714b775ce025444af15dcfbd5a420363ad53
Author: Max Filippov <jcmvbkbc@gmail.com>
Date:   Fri Nov 18 16:08:48 2016 -0800

    gdbserver: xtensa: support THREADPTR register
    
    Provide aceess to the THREADPTR register to remote gdb.
    
    gdb/gdbserver/
    2017-03-27  Max Filippov  <jcmvbkbc@gmail.com>
    
    	* linux-xtensa-low.c (regnum::R_THREADPTR): New enum member.
    	(xtensa_fill_gregset): Call collect_register_by_name for
    	threadptr register.
    	(xtensa_store_gregset): Call supply_register_by_name for
    	threadptr register.

Diff:
---
 gdb/gdbserver/ChangeLog          |  8 ++++++++
 gdb/gdbserver/linux-xtensa-low.c | 11 +++++++++++
 2 files changed, 19 insertions(+)

diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog
index 7b4c443..693b5e0 100644
--- a/gdb/gdbserver/ChangeLog
+++ b/gdb/gdbserver/ChangeLog
@@ -1,5 +1,13 @@
 2017-03-27  Max Filippov  <jcmvbkbc@gmail.com>
 
+	* linux-xtensa-low.c (regnum::R_THREADPTR): New enum member.
+	(xtensa_fill_gregset): Call collect_register_by_name for
+	threadptr register.
+	(xtensa_store_gregset): Call supply_register_by_name for
+	threadptr register.
+
+2017-03-27  Max Filippov  <jcmvbkbc@gmail.com>
+
 	* linux-xtensa-low.c (xtensa_fill_gregset): Call collect_register
 	for all registers in a0_regnum..a0_regnum + C0_NREGS range.
 	(xtensa_store_gregset): Call supply_register for all registers in
diff --git a/gdb/gdbserver/linux-xtensa-low.c b/gdb/gdbserver/linux-xtensa-low.c
index 80b5d33..214abdc 100644
--- a/gdb/gdbserver/linux-xtensa-low.c
+++ b/gdb/gdbserver/linux-xtensa-low.c
@@ -36,6 +36,7 @@ enum regnum {
 	R_LBEG,	R_LEND,	R_LCOUNT,
 	R_SAR,
 	R_WS, R_WB,
+	R_THREADPTR,
 	R_A0 = 64
 };
 
@@ -86,6 +87,11 @@ xtensa_fill_gregset (struct regcache *regcache, void *buf)
   collect_register_by_name (regcache, "ps", (char*)&rset[R_PS]);
   collect_register_by_name (regcache, "windowbase", (char*)&rset[R_WB]);
   collect_register_by_name (regcache, "windowstart", (char*)&rset[R_WS]);
+
+#if XCHAL_HAVE_THREADPTR
+  collect_register_by_name (regcache, "threadptr",
+			    (char *) &rset[R_THREADPTR]);
+#endif
 }
 
 static void
@@ -135,6 +141,11 @@ xtensa_store_gregset (struct regcache *regcache, const void *buf)
   supply_register_by_name (regcache, "ps", (char*)&rset[R_PS]);
   supply_register_by_name (regcache, "windowbase", (char*)&rset[R_WB]);
   supply_register_by_name (regcache, "windowstart", (char*)&rset[R_WS]);
+
+#if XCHAL_HAVE_THREADPTR
+  supply_register_by_name (regcache, "threadptr",
+			   (char *) &rset[R_THREADPTR]);
+#endif
 }
 
 /* Xtensa GNU/Linux PTRACE interface includes extended register set.  */


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