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[tools] Improve j6stack GDB command

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Improve the j6stack command in two ways: first, swap the order of the
arguments, as depth is much more likely to be changed. Second, on any
exception accessing memory in the stack, print the exception and
continue instead of failing the whole command.
This commit is contained in:
Justin C. Miller
2020-12-30 17:49:27 -08:00
committed by Justin C. Miller
parent 19cbf1ca67
commit 8bb78c95a8
1 changed files with 13 additions and 9 deletions
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22
assets/debugging/jsix.elf-gdb.py
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@@ -16,10 +16,14 @@ class PrintStackCommand(gdb.Command):
depth = int(args[1]) depth = int(args[1])
for i in range(depth-1, -1, -1): for i in range(depth-1, -1, -1):
offset = i * 8 try:
base_addr = gdb.parse_and_eval(base) offset = i * 8
value = gdb.parse_and_eval(f"*(uint64_t*)({base} + {offset})") base_addr = gdb.parse_and_eval(base)
print("{:016x} (+{:04x}): {:016x}".format(int(base_addr) + offset, offset, int(value))) value = gdb.parse_and_eval(f"*(uint64_t*)({base} + {offset})")
print("{:016x} (+{:04x}): {:016x}".format(int(base_addr) + offset, offset, int(value)))
except Exception as e:
print(e)
continue
class PrintBacktraceCommand(gdb.Command): class PrintBacktraceCommand(gdb.Command):
@@ -29,13 +33,13 @@ class PrintBacktraceCommand(gdb.Command):
def invoke(self, arg, from_tty): def invoke(self, arg, from_tty):
args = gdb.string_to_argv(arg) args = gdb.string_to_argv(arg)
frame = "$rbp"
if len(args) > 0:
frame = args[0]
depth = 30 depth = 30
if len(args) > 0:
depth = int(args[0])
frame = "$rbp"
if len(args) > 1: if len(args) > 1:
depth = int(args[1]) frame = args[1]
for i in range(depth-1, -1, -1): for i in range(depth-1, -1, -1):
ret = gdb.parse_and_eval(f"*(uint64_t*)({frame} + 8)") ret = gdb.parse_and_eval(f"*(uint64_t*)({frame} + 8)")