kgdb: x86: Return all segment registers also in 64-bit mode

Even if the content is always 0, gdb expects us to return also ds,
es, fs, and gs while in x86-64 mode. Do this to avoid ugly errors on
"info registers".

[jason.wessel@windriver.com: adjust NUMREGBYTES for two new regs]
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>

1 files changed, 7 insertions, 3 deletions

diff --git a/arch/x86/include/asm/kgdb.h b/arch/x86/include/asm/kgdb.h
index 77e95f54570a..332f98c9111f 100644
--- a/arch/x86/include/asm/kgdb.h
+++ b/arch/x86/include/asm/kgdb.h
@@ -64,11 +64,15 @@ enum regnames {
         GDB_PS,                 /* 17 */
         GDB_CS,                 /* 18 */
         GDB_SS,                 /* 19 */
+        GDB_DS,                 /* 20 */
+        GDB_ES,                 /* 21 */
+        GDB_FS,                 /* 22 */
+        GDB_GS,                 /* 23 */
 };
 #define GDB_ORIG_AX             57
-#define DBG_MAX_REG_NUM         20
-/* 17 64 bit regs and 3 32 bit regs */
-#define NUMREGBYTES             ((17 * 8) + (3 * 4))
+#define DBG_MAX_REG_NUM         24
+/* 17 64 bit regs and 5 32 bit regs */
+#define NUMREGBYTES             ((17 * 8) + (5 * 4))
 #endif /* ! CONFIG_X86_32 */
 
 static inline void arch_kgdb_breakpoint(void)