Marian Buschsieweke 5f355e7210 cpu/arm7_common: Make irq_*() compiler barriers ... Previously the compiler was allowed to reorder access to the interrupt control registers in regard to memory access not marked as `volatile` (at least some people - most notably some compiler developers - read the C standard this way). In practise this did not happen as irq_disable(), irq_restore(), irq_enable() are part of a separate compilation unit: Calls to external functions unknown to the compiler are treated as if they were memory barriers. But if link time optimization (LTO) is enabled, this no longer would work: The compiler could inline the code accessing the interrupt control registers and reorder the memory accesses wrapped in irq_disable() and irq_restore() outside of their protection. This commit adds the "memory" clobber to the inline assembly accessing the interrupt control registers. This makes those accesses explicit compiler memory barriers. The machine code generated without LTO enabled should not differ in any way by this commit. But the use of irq_*() should now be safe with LTO.		2019-04-24 16:29:30 +02:00
..
include	cpu: instead of cpp-style, use C-style comments	2018-02-06 16:59:58 +01:00
periph	cpu: make use of Makefile.periph	2017-11-06 12:01:19 +01:00
arm_cpu.c	all: fix my email address	2017-10-20 15:02:41 +02:00
bootloader.c	cpu: lpc2387: use while(1){} instead of exit	2019-01-10 12:15:44 +01:00
common.s	cpu/arm7_common: remove dINT/eINT definitions	2015-09-19 10:37:20 +02:00
Makefile	cpu/arm7: moved pm_reboot to periph/pm.c	2017-01-19 11:05:44 +01:00
Makefile.features	cpu: arm7: reorganize Makefile.features	2017-11-02 12:59:45 +01:00
Makefile.include	cpu/arm7: moved pm_reboot to periph/pm.c	2017-01-19 11:05:44 +01:00
VIC.c	cpu/arm7_common: Make irq_*() compiler barriers	2019-04-24 16:29:30 +02:00