diff mbox

[3/4] Implement get_syscall_trapinfo for aarch64-linux

Message ID 1466158585-21833-4-git-send-email-yao.qi@linaro.org
State New, archived
Headers

Commit Message

Yao Qi June 17, 2016, 10:16 a.m. UTC 
  gdb/gdbserver:

2016-06-16  Yao Qi  <yao.qi@linaro.org>

	* linux-aarch64-low.c (aarch64_get_syscall_trapinfo): New
	function.
	(the_low_target): Install aarch64_get_syscall_trapinfo.
---
 gdb/gdbserver/linux-aarch64-low.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
diff mbox

Patch

diff --git a/gdb/gdbserver/linux-aarch64-low.c b/gdb/gdbserver/linux-aarch64-low.c
index d237bde..7ac68dd 100644
--- a/gdb/gdbserver/linux-aarch64-low.c
+++ b/gdb/gdbserver/linux-aarch64-low.c
@@ -570,6 +570,24 @@  aarch64_get_thread_area (int lwpid, CORE_ADDR *addrp)
   return 0;
 }
 
+/* Implementation of linux_target_ops method "get_syscall_trapinfo".  */
+
+static void
+aarch64_get_syscall_trapinfo (struct regcache *regcache, int *sysno)
+{
+  int use_64bit = register_size (regcache->tdesc, 0) == 8;
+
+  if (use_64bit)
+    {
+      long l_sysno;
+
+      collect_register_by_name (regcache, "x8", &l_sysno);
+      *sysno = (int) l_sysno;
+    }
+  else
+    collect_register_by_name (regcache, "r7", sysno);
+}
+
 /* List of condition codes that we need.  */
 
 enum aarch64_condition_codes
@@ -2984,6 +3002,7 @@  struct linux_target_ops the_low_target =
   aarch64_supports_range_stepping,
   aarch64_breakpoint_kind_from_current_state,
   aarch64_supports_hardware_single_step,
+  aarch64_get_syscall_trapinfo,
 };
 
 void