From 4b878043309e88af813468ae0116ea190d569864 Mon Sep 17 00:00:00 2001
From: Laura Abbott <lauraa@codeaurora.org>
Date: Wed, 13 Aug 2014 10:36:09 -0700
Subject: [PATCH] linux-ramdump-parser-v2: Add support for --check-for-panic on
arm64
--check-for-panic works by scanning the stacks of each task and finding
a pc that matches 'panic'. arm64 and arm have different stack disciplines
so the scanning code needs to account for this. Update this to work
with both arm and arm64.
Change-Id: I65f05156c51c117713a6dd0e87ca71fd09e17568
---
linux-ramdump-parser-v2/parsers/taskdump.py | 34 +++++++++++++++------
1 file changed, 25 insertions(+), 9 deletions(-)
diff --git a/linux-ramdump-parser-v2/parsers/taskdump.py b/linux-ramdump-parser-v2/parsers/taskdump.py
index ad1ca27..83555bd 100644
--- a/linux-ramdump-parser-v2/parsers/taskdump.py
+++ b/linux-ramdump-parser-v2/parsers/taskdump.py
@@ -14,20 +14,36 @@ from print_out import print_out_str
from parser_util import register_parser, RamParser, cleanupString
def find_panic(ramdump, addr_stack, thread_task_name):
- for i in range(addr_stack, addr_stack + 0x2000, 4):
- pc = ramdump.read_word(i)
- lr = ramdump.read_word(i + 4)
- spx = ramdump.read_word(i + 8)
+ if ramdump.arm64:
+ stack_size = 0x4000
+ increment = 8
+ else:
+ stack_size = 0x2000
+ increment = 4
+ for i in range(addr_stack, addr_stack + stack_size, increment):
+ if ramdump.arm64:
+ pc = ramdump.read_word(i + 8) - 4
+ fp = ramdump.read_word(i)
+ spx = i + 16
+ lr = 0
+ else:
+ pc = ramdump.read_word(i)
+ lr = ramdump.read_word(i + 4)
+ spx = i + 4
+ fp = 0
l = ramdump.unwind_lookup(pc)
if l is not None:
s, offset = l
if s == 'panic':
- print_out_str('Faulting process found! Name {0}. Attempting to retrieve stack (sp = {1:x} pc = {2:x})'.format(
- thread_task_name, i + 4, pc))
- ramdump.unwind.unwind_backtrace(i + 4, 0, pc, lr, '')
+ print_out_str('Faulting process found! Name {0})'.format(thread_task_name))
+ ramdump.unwind.unwind_backtrace(spx, fp, pc, lr, '')
regspanic = ramdump.open_file('regs_panic.cmm')
- regspanic.write('r.s pc 0x{0:x}\n'.format(pc))
- regspanic.write('r.s r13 0x{0:x}\n'.format(i + 4))
+ if ramdump.arm64:
+ regspanic.write('r.s pc 0x{0:x}\n'.format(pc))
+ regspanic.write('r.s sp 0x{0:x}\n'.format(spx))
+ else:
+ regspanic.write('r.s pc 0x{0:x}\n'.format(pc))
+ regspanic.write('r.s r13 0x{0:x}\n'.format(i + 4))
regspanic.close()
return True
return False
--
GitLab