major backup 8.24.21

1 files changed, 28 insertions, 0 deletions

diff --git a/src/debug/gdbinit.py b/src/debug/gdbinit.py
new file mode 100755
index 0000000..75ab5ca
--- /dev/null
+++ b/src/debug/gdbinit.py
@@ -0,0 +1,28 @@
+class NextInstructionAddress(gdb.Command):
+    """
+Run until Next Instruction address.
+
+Usage: nia
+
+Put a temporary breakpoint at the address of the next instruction, and continue.
+
+Useful to step over int interrupts.
+
+See also: http://stackoverflow.com/questions/24491516/how-to-step-over-interrupt-calls-when-debugging-a-bootloader-bios-with-gdb-and-q
+"""
+    def __init__(self):
+        super().__init__(
+            'nia',
+            gdb.COMMAND_BREAKPOINTS,
+            gdb.COMPLETE_NONE,
+            False
+        )
+    def invoke(self, arg, from_tty):
+        frame = gdb.selected_frame()
+        arch = frame.architecture()
+        pc = gdb.selected_frame().pc()
+        length = arch.disassemble(pc)[0]['length']
+        gdb.Breakpoint('*' + str(pc + length), temporary = True)
+        gdb.execute('continue')
+
+NextInstructionAddress()