- removed ISR_STACKSIZE define where unused (set to 0)
- removed thread_arch_isr_stack_usage(), thread_arch_isr_stack_start(),
and/or thread_arch_isr_stack_pointer() where not implemented
The init function was patched out, but is actually required to compile without warnings with -pedantic enabled.
This patch also updates ccn-lite and x86 support accordingly.
As discussed in #2725, this commit renames a number of stacksize constants to
better convey their intended usage. In addition, constants for thread priority
are given a `THREAD_` prefix. Changes are:
* KERNEL_CONF_STACKSIZE_PRINTF renamed to THREAD_EXTRA_STACKSIZE_PRINTF
* KERNEL_CONF_STACKSIZE_DEFAULT renamed to THREAD_STACKSIZE_DEFAULT
* KERNEL_CONF_STACKSIZE_IDLE renamed to THREAD_STACKSIZE_IDLE
* KERNEL_CONF_STACKSIZE_MAIN renamed to THREAD_STACKSIZE_MAIN
* Move thread stacksizes from kernel.h to thread.h, since the prefix changed
* PRIORITY_MIN renamed to THREAD_PRIORITY_MIN
* PRIORITY_IDLE renamed to THREAD_PRIORITY_IDLE
* PRIORITY_MAIN renamed to THREAD_PRIORITY_MAIN
* Move thread priorities from kernel.h to thread.h since the prefix has changed
* MINIMUM_STACK_SIZE renamed to THREAD_STACKSIZE_MINIMUM for consistency
- Move generic implementation of atomic_set_return to core/atomic.c
- Generic implementation of atomic compare and swap in core/atomic.c
- atomic_cas is used to implement atomic counters in core/include/atomic.h
- atomic_int_t is an atomic integer type
- ATOMIC_INIT can be used as an initializer for atomic_int_t
- ATOMIC_VALUE gets a reference to the value of an atomic integer
The ucontext->x86_fxsave is initialize as 512 bytes of zeros, but it
is not a valid value to be set onto FPU registers, causing a General
Protection Fault:
Interrupt 0x0d (General Protection Fault) while handling 0x07 (Device not available)
EAX=0012f4c0 ECX=001336e4 EDX=001334ac EBX=001336e0
ESP=00123784 EBP=001237c8 ESI=00000200 EDI=00000000
Error code=00000000
CR0=80010031 CR2=00000000 CR3=0012d000 CR4=000001e0
EIP=0000:80010031 EFLAGS=0012d000
<stack trace>
00000000
???
</stack trace>
Halting.
So lets copy the initial state of FPU registers before FPU is used
and set it as the initial state of FPU to new threads(coroutine).
