Andrew Lunn wrote:
On Fri, Jan 18, 2008 at 07:39:28PM +0100, Paul Chavent wrote:
Hello.
I have found that it fails in hal/arm/arch/current/src/hal_misc.c at void
breakpoint(void).
When i execute
void
breakpoint(void)
{
diag_printf("breakpoint\n");
HAL_BREAKPOINT(_breakinst);
diag_printf("breakpoint\n");
}
The second trace doesn't appear and the target reboot.
When i try to compile
void
breakpoint(void)
{
diag_printf("breakpoint %p\n", _breakinst);
HAL_BREAKPOINT(_breakinst);
diag_printf("breakpoint %p\n", _breakinst);
}
I have hal_misc.c:230: error: `_breakinst' undeclared (first use in this
function)
The magic for this is in:
/packages/hal/arm/arch/current/include/hal_arch.h
I don't remember who this works on ARM. Maybe it uses a Software
interrupt?
IIRC, it uses an officially sanctioned illegal instruction.
--
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Gary Thomas | Consulting for the
MLB Associates | Embedded world
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