A("lds r16, %[timsk0]")/* 2 Load into R0 the Temperature timer Interrupt mask register */ \
A("push r16")/* 2 Save TIMSK0 into the stack */ \
A("andi r16,~%[msk0]")/* 1 Disable the temperature ISR */ \
A("sts %[timsk0], r16")/* 2 And set the new value */ \
A("lds r16, %[timsk1]")/* 2 Load into R0 the stepper timer Interrupt mask register [TIMSK1] */ \
A("andi r16,~%[msk1]")/* 1 Disable the stepper ISR */ \
A("sts %[timsk1], r16")/* 2 And set the new value */ \
A("sei")/* 1 Enable global interrupts - stepper and temperature ISRs are disabled, so no risk of reentry or being preempted by the temperature ISR */ \
A("push r16")/* 2 Save TIMSK1 into stack */ \
A("in r16, 0x3B")/* 1 Get RAMPZ register */ \
A("push r16")/* 2 Save RAMPZ into stack */ \
A("in r16, 0x3C")/* 1 Get EIND register */ \
A("push r0")/* C runtime can modify all the following registers without restoring them */ \
A("push r1") \
A("push r18") \
A("push r19") \
A("push r20") \
A("push r21") \
A("push r22") \
A("push r23") \
A("push r24") \
A("push r25") \
A("push r26") \
A("push r27") \
A("push r30") \
A("push r31") \
A("clr r1")/* C runtime expects this register to be 0 */ \
A("call TIMER1_COMPA_vect_bottom")/* Call the bottom handler - No inlining allowed, otherwise registers used are not saved */ \
A("pop r31") \
A("pop r30") \
A("pop r27") \
A("pop r26") \
A("pop r25") \
A("pop r24") \
A("pop r23") \
A("pop r22") \
A("pop r21") \
A("pop r20") \
A("pop r19") \
A("pop r18") \
A("pop r1") \
A("pop r0") \
A("out 0x3C, r16")/* 1 Restore EIND register */ \
A("pop r16")/* 2 Get the original RAMPZ register value */ \
A("out 0x3B, r16")/* 1 Restore RAMPZ register to its original value */ \
A("pop r16")/* 2 Get the original TIMSK1 value but with stepper ISR disabled */ \
A("ori r16,%[msk1]")/* 1 Reenable the stepper ISR */ \
A("cli")/* 1 Disable global interrupts - Reenabling Stepper ISR can reenter amd temperature can reenter, and we want that, if it happens, after this ISR has ended */ \
A("sts %[timsk1], r16")/* 2 And restore the old value - This reenables the stepper ISR */ \
A("pop r16")/* 2 Get the temperature timer Interrupt mask register [TIMSK0] */ \
A("sts %[timsk0], r16")/* 2 And restore the old value - This reenables the temperature ISR */ \
A("pop r16")/* 2 Get the old SREG value */ \
A("out __SREG__, r16")/* 1 And restore the SREG value */ \
A("lds r16, %[timsk0]")/* 2 Load into R0 the Temperature timer Interrupt mask register */ \
A("andi r16,~%[msk0]")/* 1 Disable the temperature ISR */ \
A("sts %[timsk0], r16")/* 2 And set the new value */ \
A("sei")/* 1 Enable global interrupts - It is safe, as the temperature ISR is disabled, so we cannot reenter it */ \
A("push r16")/* 2 Save TIMSK0 into stack */ \
A("in r16, 0x3B")/* 1 Get RAMPZ register */ \
A("push r16")/* 2 Save RAMPZ into stack */ \
A("in r16, 0x3C")/* 1 Get EIND register */ \
A("push r0")/* C runtime can modify all the following registers without restoring them */ \
A("push r1") \
A("push r18") \
A("push r19") \
A("push r20") \
A("push r21") \
A("push r22") \
A("push r23") \
A("push r24") \
A("push r25") \
A("push r26") \
A("push r27") \
A("push r30") \
A("push r31") \
A("clr r1")/* C runtime expects this register to be 0 */ \
A("call TIMER0_COMPB_vect_bottom")/* Call the bottom handler - No inlining allowed, otherwise registers used are not saved */ \
A("pop r31") \
A("pop r30") \
A("pop r27") \
A("pop r26") \
A("pop r25") \
A("pop r24") \
A("pop r23") \
A("pop r22") \
A("pop r21") \
A("pop r20") \
A("pop r19") \
A("pop r18") \
A("pop r1") \
A("pop r0") \
A("out 0x3C, r16")/* 1 Restore EIND register */ \
A("pop r16")/* 2 Get the original RAMPZ register value */ \
A("out 0x3B, r16")/* 1 Restore RAMPZ register to its original value */ \
A("pop r16")/* 2 Get the original TIMSK0 value but with temperature ISR disabled */ \
A("ori r16,%[msk0]")/* 1 Enable temperature ISR */ \
A("cli")/* 1 Disable global interrupts - We must do this, as we will reenable the temperature ISR, and we don´t want to reenter this handler until the current one is done */ \
A("sts %[timsk0], r16")/* 2 And restore the old value */ \
A("pop r16")/* 2 Get the old SREG */ \
A("out __SREG__, r16")/* 1 And restore the SREG value */ \
