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arch: posix: break debugger on fatal error

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Add option to raise a SIGTRAP on fatal error, making the debugger break
instead of exiting.

Signed-off-by: Jonathan Rico <jonathan.rico@nordicsemi.no>
This commit is contained in:
Jonathan Rico 2023-07-12 17:26:25 +02:00 • committed by Alberto Escolar
commit 05cc2f37a3
4 changed files with 32 additions and 0 deletions
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6
arch/posix/Kconfig
View file

@ -57,4 +57,10 @@ config ARCH_POSIX_FUZZ_TICKS
endif # CONFIG_ARCH_POSIX_LIBFUZZER
config ARCH_POSIX_TRAP_ON_FATAL
bool "Raise a SIGTRAP on fatal error"
help
Raise a SIGTRAP signal on fatal error before exiting.
This automatically suspends the target if a debugger is attached.
endmenu

8
arch/posix/core/CMakeLists.txt
View file

@ -10,6 +10,14 @@ zephyr_library_sources(
thread.c
)
if(CONFIG_ARCH_POSIX_TRAP_ON_FATAL)
if(CONFIG_NATIVE_LIBRARY)
target_sources(native_simulator INTERFACE fatal_trap.c)
else()
zephyr_library_sources(fatal_trap.c)
endif()
endif()
if(CONFIG_NATIVE_APPLICATION)
zephyr_include_directories(
nsi_compat/

6
arch/posix/core/fatal.c
View file

@ -13,10 +13,16 @@
#include <zephyr/logging/log_ctrl.h>
#include <zephyr/arch/posix/posix_soc_if.h>
extern void nsi_raise_sigtrap(void);
FUNC_NORETURN void arch_system_halt(unsigned int reason)
{
ARG_UNUSED(reason);
if (IS_ENABLED(CONFIG_ARCH_POSIX_TRAP_ON_FATAL)) {
nsi_raise_sigtrap();
}
posix_print_error_and_exit("Exiting due to fatal error\n");
CODE_UNREACHABLE; /* LCOV_EXCL_LINE */
}

12
arch/posix/core/fatal_trap.c Normal file
View file

@ -0,0 +1,12 @@
/*
* Copyright (c) 2023 Nordic Semiconductor ASA
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <signal.h>
void nsi_raise_sigtrap(void)
{
raise(SIGTRAP);
}