alex/esp-idf
1
0
Fork 0
mirror of https://github.com/espressif/esp-idf.git synced 2025-11-26 12:50:30 +00:00
Code Issues Packages Projects Releases Wiki Activity

fix(xtensa): fix confusing backtrace when PC is invalid

Browse Source 
Before this change _invalid_pc_placeholder pointed to address of _init
function from crti.o
This made GDB input a bit confusing:

  0x40080400 in _init ()
  (gdb) bt
  #0  0x40080400 in _init ()
  #1  0x400e519a in test_instr_fetch_prohibited () at /home/alex/git/esp-idf/tools/test_apps/system/panic/main/test_panic.c:271
  #2  0x400d89a7 in app_main () at /home/alex/git/esp-idf/tools/test_apps/system/panic/main/test_app_main.c:116
  #3  0x400e5f22 in main_task (args=0x0) at /home/alex/git/esp-idf/components/freertos/app_startup.c:208
  #4  0x400895a8 in vPortTaskWrapper (pxCode=0x400e5eb0 <main_task>, pvParameters=0x0) at /home/alex/git/esp-idf/components/freertos/FreeRTOS-Kernel/portable/xtensa/port.c:139

After the change GDB prints output that contains a hint:

  _invalid_pc_placeholder () at /home/alex/git/esp-idf/components/xtensa/xtensa_vectors.S:2235
  2235	    UNREACHABLE_INSTRUCTION_CHECK_PREVIOUS_FRAMES
  (gdb) bt
  #0  _invalid_pc_placeholder () at /home/alex/git/esp-idf/components/xtensa/xtensa_vectors.S:2235
  #1  0x400e519e in test_instr_fetch_prohibited () at /home/alex/git/esp-idf/tools/test_apps/system/panic/main/test_panic.c:271
  #2  0x400d89ab in app_main () at /home/alex/git/esp-idf/tools/test_apps/system/panic/main/test_app_main.c:116
  #3  0x400e5f26 in main_task (args=0x0) at /home/alex/git/esp-idf/components/freertos/app_startup.c:208
  #4  0x400895a8 in vPortTaskWrapper (pxCode=0x400e5eb4 <main_task>, pvParameters=0x0) at /home/alex/git/esp-idf/components/freertos/FreeRTOS-Kernel/portable/xtensa/port.c:139
This commit is contained in:
Alexey Lapshin
2024-10-17 13:18:25 +07:00
parent 6d945bf0f6
commit 244c369cd8
13 changed files with 23 additions and 57 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
tools/test_apps/system/panic/pytest_panic.py
View File

@@ -362,7 +362,7 @@ def test_instr_fetch_prohibited(
dut.expect_gme('InstrFetchProhibited')
dut.expect_reg_dump(0)
dut.expect_backtrace()
expected_backtrace = ['_init'] + get_default_backtrace(test_func_name)
expected_backtrace = ['_invalid_pc_placeholder'] + get_default_backtrace(test_func_name)
else:
dut.expect_gme('Instruction access fault')
dut.expect_reg_dump(0)