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dde_linux: don't spin when panicking

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Issue #3997
This commit is contained in:
Norman Feske 2021-03-08 11:30:41 +01:00
parent 6223ae4413
commit 755aed7cb2
13 changed files with 43 additions and 9 deletions
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2
repos/dde_linux/lib/mk/lxip.mk
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@ -28,7 +28,7 @@ CC_CXX_OPT = -fpermissive
SRC_CC = dummies.cc lxcc_emul.cc nic_handler.cc \ SRC_CC = dummies.cc lxcc_emul.cc nic_handler.cc \
timer_handler.cc random.cc timer_handler.cc random.cc
SRC_CC += malloc.cc printf.cc env.cc SRC_CC += malloc.cc printf.cc bug.cc env.cc
SRC_C += driver.c dummies_c.c lxc_emul.c SRC_C += driver.c dummies_c.c lxc_emul.c

2
repos/dde_linux/lib/mk/wifi.inc
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@ -20,7 +20,7 @@ SRC_CC += dummies.cc init.cc lxcc_emul.cc nic.cc socket_call.cc random.cc \
# lx_kit # lx_kit
SRC_CC += mapped_io_mem_range.cc irq.cc pci.cc malloc.cc scheduler.cc \ SRC_CC += mapped_io_mem_range.cc irq.cc pci.cc malloc.cc scheduler.cc \
work.cc timer.cc printf.cc env.cc work.cc timer.cc printf.cc bug.cc env.cc
SRC_C += lxc_emul.c dummies_new.c SRC_C += lxc_emul.c dummies_new.c

1
repos/dde_linux/src/drivers/framebuffer/imx8/target.mk
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@ -7,6 +7,7 @@ SRC_C = dummies.c lx_emul_c.c
# lx_kit # lx_kit
SRC_CC += printf.cc \ SRC_CC += printf.cc \
bug.cc \
env.cc \ env.cc \
irq.cc \ irq.cc \
malloc.cc \ malloc.cc \

1
repos/dde_linux/src/drivers/framebuffer/intel/target.mk
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@ -11,6 +11,7 @@ SRC_CC += irq.cc \
mapped_io_mem_range.cc \ mapped_io_mem_range.cc \
pci.cc \ pci.cc \
printf.cc \ printf.cc \
bug.cc \
scheduler.cc \ scheduler.cc \
timer.cc \ timer.cc \
work.cc \ work.cc \

2
repos/dde_linux/src/drivers/nic/fec/target.inc
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@ -7,7 +7,7 @@ INC_DIR += $(PRG_DIR)/../..
INC_DIR += $(REP_DIR)/src/drivers/nic INC_DIR += $(REP_DIR)/src/drivers/nic
# lx_kit # lx_kit
SRC_CC += env.cc irq.cc malloc.cc scheduler.cc timer.cc work.cc printf.cc SRC_CC += env.cc irq.cc malloc.cc scheduler.cc timer.cc work.cc printf.cc bug.cc
INC_DIR += $(REP_DIR)/src/include INC_DIR += $(REP_DIR)/src/include
# contrib code # contrib code

2
repos/dde_linux/src/drivers/usb/target.inc
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@ -43,7 +43,7 @@ MOD_SUFFIX =
CC_OPT += -DMOD_SUFFIX=$(MOD_SUFFIX) CC_OPT += -DMOD_SUFFIX=$(MOD_SUFFIX)
# lx_kit # lx_kit
SRC_CC += printf.cc work.cc timer.cc scheduler.cc irq.cc malloc.cc env.cc SRC_CC += printf.cc bug.cc work.cc timer.cc scheduler.cc irq.cc malloc.cc env.cc
# common lib # common lib
SRC_C += lib/ctype.c SRC_C += lib/ctype.c

2
repos/dde_linux/src/drivers/usb_hid/target.mk
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@ -1,7 +1,7 @@
TARGET := usb_hid_drv TARGET := usb_hid_drv
SRC_C := dummies.c SRC_C := dummies.c
SRC_CC := main.cc lx_emul.cc evdev.cc SRC_CC := main.cc lx_emul.cc evdev.cc
SRC_CC += printf.cc timer.cc scheduler.cc env.cc work.cc SRC_CC += printf.cc bug.cc timer.cc scheduler.cc env.cc work.cc
LIBS := base usb_hid_include lx_kit_setjmp LIBS := base usb_hid_include lx_kit_setjmp

1
repos/dde_linux/src/drivers/usb_host/target.inc
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@ -10,6 +10,7 @@ INC_DIR += $(REP_DIR)/src/include
# lx_kit # lx_kit
SRC_CC += lx_kit/printf.cc SRC_CC += lx_kit/printf.cc
SRC_CC += lx_kit/bug.cc
SRC_CC += lx_kit/work.cc SRC_CC += lx_kit/work.cc
SRC_CC += lx_kit/timer.cc SRC_CC += lx_kit/timer.cc
SRC_CC += lx_kit/scheduler.cc SRC_CC += lx_kit/scheduler.cc

2
repos/dde_linux/src/drivers/usb_modem/target.mk
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@ -1,7 +1,7 @@
TARGET := usb_modem_drv TARGET := usb_modem_drv
SRC_C := dummies.c lxc.c SRC_C := dummies.c lxc.c
SRC_CC := main.cc lx_emul.cc component.cc terminal.cc fec_nic.cc SRC_CC := main.cc lx_emul.cc component.cc terminal.cc fec_nic.cc
SRC_CC += printf.cc timer.cc scheduler.cc malloc.cc env.cc work.cc SRC_CC += printf.cc bug.cc timer.cc scheduler.cc malloc.cc env.cc work.cc
SRC_CC += uplink_client.cc SRC_CC += uplink_client.cc
LIBS := base usb_modem_include lx_kit_setjmp nic_driver LIBS := base usb_modem_include lx_kit_setjmp nic_driver

2
repos/dde_linux/src/drivers/usb_net/target.mk
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@ -1,7 +1,7 @@
TARGET := usb_net_drv TARGET := usb_net_drv
SRC_C := dummies.c lxc.c SRC_C := dummies.c lxc.c
SRC_CC := main.cc lx_emul.cc component.cc linux_network_session_base.cc SRC_CC := main.cc lx_emul.cc component.cc linux_network_session_base.cc
SRC_CC += printf.cc timer.cc scheduler.cc malloc.cc env.cc work.cc SRC_CC += printf.cc bug.cc timer.cc scheduler.cc malloc.cc env.cc work.cc
SRC_CC += uplink_client.cc SRC_CC += uplink_client.cc
LIBS := base usb_net_include lx_kit_setjmp nic_driver LIBS := base usb_net_include lx_kit_setjmp nic_driver

4
repos/dde_linux/src/include/lx_emul/bug.h
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@ -19,6 +19,8 @@
** asm/bug.h ** ** asm/bug.h **
***************/ ***************/
extern void lx_sleep_forever() __attribute__((noreturn));
#define WARN_ON(condition) ({ \ #define WARN_ON(condition) ({ \
int ret = !!(condition); \ int ret = !!(condition); \
if (ret) lx_printf("[%s] WARN_ON(%s) \n", __func__, #condition); \ if (ret) lx_printf("[%s] WARN_ON(%s) \n", __func__, #condition); \
@ -31,7 +33,7 @@
#define BUG() do { \ #define BUG() do { \
lx_printf("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); \ lx_printf("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); \
while (1); \ lx_sleep_forever(); \
} while (0) } while (0)
#define WARN_ON_ONCE WARN_ON #define WARN_ON_ONCE WARN_ON

5
repos/dde_linux/src/include/lx_emul/kernel.h
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@ -71,6 +71,9 @@ static inline int _printk(const char *fmt, ...)
#define vprintk(...) #define vprintk(...)
#endif #endif
extern void lx_sleep_forever() __attribute__((noreturn));
static inline __printf(1, 2) void panic(const char *fmt, ...) __noreturn; static inline __printf(1, 2) void panic(const char *fmt, ...) __noreturn;
static inline void panic(const char *fmt, ...) static inline void panic(const char *fmt, ...)
{ {
@ -79,7 +82,7 @@ static inline void panic(const char *fmt, ...)
lx_vprintf(fmt, args); lx_vprintf(fmt, args);
va_end(args); va_end(args);
lx_printf("\npanic()\n"); lx_printf("\npanic()\n");
while (1) ; lx_sleep_forever();
} }
/* /*

26
repos/dde_linux/src/lx_kit/bug.cc Normal file
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@ -0,0 +1,26 @@
/*
* \brief C ABI for panicking / blocking forever
* \author Norman Feske
* \date 2021-03-08
*/
/*
* Copyright (C) 2021 Genode Labs GmbH
*
* This file is distributed under the terms of the GNU General Public License
* version 2.
*/
/* Genode includes */
#include <base/sleep.h>
/* Linux emulation environment includes */
#include <lx_emul/extern_c_begin.h>
#include <lx_emul/bug.h>
#include <lx_emul/extern_c_end.h>
extern "C" void lx_sleep_forever()
{
Genode::sleep_forever();
}