int up_hardfault(int irq, FAR void *context)
{
uint32_t *regs = (uint32_t*)context;
uint16_t *pc;
uint16_t insn;
/* Get the value of the program counter where the fault occurred */
pc = (uint16_t*)regs[REG_PC] - 1;
if ((void*)pc >= (void*)&_stext && (void*)pc < (void*)&_etext)
{
/* Fetch the instruction that caused the Hard fault */
insn = *pc;
hfdbg(" PC: %p INSN: %04x\n", pc, insn);
/* If this was the instruction 'svc 0', then forward processing
* to the SVCall handler
*/
if (insn == INSN_SVC0)
{
hfdbg("Forward SVCall\n");
return up_svcall(irq, context);
}
}
/* Dump some hard fault info */
hfdbg("\nHard Fault:\n");
hfdbg(" IRQ: %d regs: %p\n", irq, regs);
hfdbg(" BASEPRI: %08x PRIMASK: %08x IPSR: %08x\n",
getbasepri(), getprimask(), getipsr());
hfdbg(" CFAULTS: %08x HFAULTS: %08x DFAULTS: %08x BFAULTADDR: %08x AFAULTS: %08x\n",
getreg32(NVIC_CFAULTS), getreg32(NVIC_HFAULTS),
getreg32(NVIC_DFAULTS), getreg32(NVIC_BFAULT_ADDR),
getreg32(NVIC_AFAULTS));
hfdbg(" R0: %08x %08x %08x %08x %08x %08x %08x %08x\n",
regs[REG_R0], regs[REG_R1], regs[REG_R2], regs[REG_R3],
regs[REG_R4], regs[REG_R5], regs[REG_R6], regs[REG_R7]);
hfdbg(" R8: %08x %08x %08x %08x %08x %08x %08x %08x\n",
regs[REG_R8], regs[REG_R9], regs[REG_R10], regs[REG_R11],
regs[REG_R12], regs[REG_R13], regs[REG_R14], regs[REG_R15]);
hfdbg(" PSR=%08x\n", regs[REG_XPSR]);
(void)irqsave();
lldbg("PANIC!!! Hard fault: %08x\n", getreg32(NVIC_HFAULTS));
PANIC(OSERR_UNEXPECTEDISR);
return OK;
}
int up_hardfault(int irq, FAR void *context)
{
#if defined(CONFIG_DEBUG_HARDFAULT) || !defined(CONFIG_ARMV7M_USEBASEPRI)
uint32_t *regs = (uint32_t*)context;
#endif
/* Get the value of the program counter where the fault occurred */
#ifndef CONFIG_ARMV7M_USEBASEPRI
uint16_t *pc = (uint16_t*)regs[REG_PC] - 1;
/* Check if the pc lies in known FLASH memory.
* REVISIT: What if the PC lies in "unknown" external memory? Best
* use the BASEPRI register if you have external memory.
*/
#ifdef CONFIG_NUTTX_KERNEL
/* In the kernel build, SVCalls are expected in either the base, kernel
* FLASH region or in the user FLASH region.
*/
if (((uintptr_t)pc >= (uintptr_t)&_stext &&
(uintptr_t)pc < (uintptr_t)&_etext) ||
((uintptr_t)pc >= (uintptr_t)USERSPACE->us_textstart &&
(uintptr_t)pc < (uintptr_t)USERSPACE->us_textend))
#else
/* SVCalls are expected only from the base, kernel FLASH region */
if ((uintptr_t)pc >= (uintptr_t)&_stext &&
(uintptr_t)pc < (uintptr_t)&_etext)
#endif
{
/* Fetch the instruction that caused the Hard fault */
uint16_t insn = *pc;
hfdbg(" PC: %p INSN: %04x\n", pc, insn);
/* If this was the instruction 'svc 0', then forward processing
* to the SVCall handler
*/
if (insn == INSN_SVC0)
{
hfdbg("Forward SVCall\n");
return up_svcall(irq, context);
}
}
#endif
/* Dump some hard fault info */
hfdbg("Hard Fault:\n");
hfdbg(" IRQ: %d regs: %p\n", irq, regs);
hfdbg(" BASEPRI: %08x PRIMASK: %08x IPSR: %08x CONTROL: %08x\n",
getbasepri(), getprimask(), getipsr(), getcontrol());
hfdbg(" CFAULTS: %08x HFAULTS: %08x DFAULTS: %08x BFAULTADDR: %08x AFAULTS: %08x\n",
getreg32(NVIC_CFAULTS), getreg32(NVIC_HFAULTS),
getreg32(NVIC_DFAULTS), getreg32(NVIC_BFAULT_ADDR),
getreg32(NVIC_AFAULTS));
hfdbg(" R0: %08x %08x %08x %08x %08x %08x %08x %08x\n",
regs[REG_R0], regs[REG_R1], regs[REG_R2], regs[REG_R3],
regs[REG_R4], regs[REG_R5], regs[REG_R6], regs[REG_R7]);
hfdbg(" R8: %08x %08x %08x %08x %08x %08x %08x %08x\n",
regs[REG_R8], regs[REG_R9], regs[REG_R10], regs[REG_R11],
regs[REG_R12], regs[REG_R13], regs[REG_R14], regs[REG_R15]);
#ifdef CONFIG_ARMV7M_USEBASEPRI
# ifdef REG_EXC_RETURN
hfdbg(" xPSR: %08x BASEPRI: %08x EXC_RETURN: %08x (saved)\n",
current_regs[REG_XPSR], current_regs[REG_BASEPRI],
current_regs[REG_EXC_RETURN]);
# else
hfdbg(" xPSR: %08x BASEPRI: %08x (saved)\n",
current_regs[REG_XPSR], current_regs[REG_BASEPRI]);
# endif
#else
# ifdef REG_EXC_RETURN
hfdbg(" xPSR: %08x PRIMASK: %08x EXC_RETURN: %08x (saved)\n",
current_regs[REG_XPSR], current_regs[REG_PRIMASK],
current_regs[REG_EXC_RETURN]);
# else
hfdbg(" xPSR: %08x PRIMASK: %08x (saved)\n",
current_regs[REG_XPSR], current_regs[REG_PRIMASK]);
# endif
#endif
(void)irqsave();
lldbg("PANIC!!! Hard fault: %08x\n", getreg32(NVIC_HFAULTS));
PANIC();
return OK;
}