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authorLinus Torvalds <torvalds@linux-foundation.org>2011-03-24 10:07:50 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-03-24 10:07:50 -0700
commit3dab04e6978e358ad2307bca563fabd6c5d2c58b (patch)
tree893e9bc5041e7f722722fe13a3b145396f2554d8 /kernel
parent6d1e9a42e7176bbce9348274784b2e5f69223936 (diff)
parent5a4b65ab506398ba5a35c37e06edddd387cc0add (diff)
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Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-mn10300
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-mn10300: MN10300: gcc 4.6 vs am33 inline assembly MN10300: Deprecate gdbstub MN10300: Allow KGDB to use the MN10300 serial ports MN10300: Emulate single stepping in KGDB on MN10300 MN10300: Generalise kernel debugger kernel halt, reboot or power off hook KGDB: Notify GDB of machine halt, reboot or power off MN10300: Use KGDB MN10300: Create generic kernel debugger hooks MN10300: Create general kernel debugger cache flushing MN10300: Introduce a general config option for kernel debugger hooks MN10300: The icache invalidate functions should disable the icache first MN10300: gdbstub: Restrict single-stepping to non-preemptable non-SMP configs
Diffstat (limited to 'kernel')
-rw-r--r--kernel/debug/gdbstub.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/kernel/debug/gdbstub.c b/kernel/debug/gdbstub.c
index 481a7bd2dfe7..a11db956dd62 100644
--- a/kernel/debug/gdbstub.c
+++ b/kernel/debug/gdbstub.c
@@ -1093,3 +1093,33 @@ int gdbstub_state(struct kgdb_state *ks, char *cmd)
put_packet(remcom_out_buffer);
return 0;
}
+
+/**
+ * gdbstub_exit - Send an exit message to GDB
+ * @status: The exit code to report.
+ */
+void gdbstub_exit(int status)
+{
+ unsigned char checksum, ch, buffer[3];
+ int loop;
+
+ buffer[0] = 'W';
+ buffer[1] = hex_asc_hi(status);
+ buffer[2] = hex_asc_lo(status);
+
+ dbg_io_ops->write_char('$');
+ checksum = 0;
+
+ for (loop = 0; loop < 3; loop++) {
+ ch = buffer[loop];
+ checksum += ch;
+ dbg_io_ops->write_char(ch);
+ }
+
+ dbg_io_ops->write_char('#');
+ dbg_io_ops->write_char(hex_asc_hi(checksum));
+ dbg_io_ops->write_char(hex_asc_lo(checksum));
+
+ /* make sure the output is flushed, lest the bootloader clobber it */
+ dbg_io_ops->flush();
+}