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Code: Select all
Index: chcore_v7m.c
===================================================================
--- chcore_v7m.c (revision 670)
+++ chcore_v7m.c (working copy)
@@ -166,6 +166,7 @@
populate it fully.*/
ctxp--;
ctxp->xpsr = (regarm_t)0x01000000;
+ ctxp->fpscr = (regarm_t)SCB_FPDSCR;
asm volatile ("msr PSP, %0" : : "r" (ctxp) : "memory");
/* The exit sequence is different depending on if a preemption is
@@ -249,6 +250,8 @@
void _port_thread_start(void) {
chSysUnlock();
+ // TODO: LTO doesn't understand that this code invokes chThdExit().
+ // chThdExit() needs to be marked "used"
asm volatile ("mov r0, r5 \n\t"
"blx r4 \n\t"
"bl chThdExit");
Code: Select all
#include <ch.h>
#include <hal.h>
#include <stm32f4xx.h>
static void __attribute__((constructor))
configure_fpu_exceptions(void)
{
// Enable the FPU_IRQHandler
nvicEnableVector(FPU_IRQn, 1);
}
CH_IRQ_HANDLER(FPU_IRQHandler)
{
// Force a hard reset on FPU exceptions
NVIC_SystemReset();
}