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This commit is contained in:
Oleg Hahm 2014-02-15 17:28:19 +01:00
parent 85a05dd794
commit 0467181093
1 changed files with 32 additions and 32 deletions
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64
cpu/lpc1768/cpu.c
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@ -21,22 +21,22 @@
int inISR(void)
{
return (__get_IPSR() & 0xFF);
return (__get_IPSR() & 0xFF);
}
unsigned int disableIRQ(void)
{
// FIXME PRIMASK is the old CPSR (FAULTMASK ??? BASEPRI ???)
//PRIMASK lesen
unsigned int uiPriMask = __get_PRIMASK();
__disable_irq();
return uiPriMask;
// FIXME PRIMASK is the old CPSR (FAULTMASK ??? BASEPRI ???)
//PRIMASK lesen
unsigned int uiPriMask = __get_PRIMASK();
__disable_irq();
return uiPriMask;
}
void restoreIRQ(unsigned oldPRIMASK)
{
//PRIMASK lesen setzen
__set_PRIMASK(oldPRIMASK);
//PRIMASK lesen setzen
__set_PRIMASK(oldPRIMASK);
}
@ -76,36 +76,36 @@ void eINT(void)
void save_context(void)
{
/* {r0-r3,r12,LR,PC,xPSR} are saved automatically on exception entry */
asm("push {r4-r11}");
/* save unsaved registers */
asm("push {LR}");
/* save exception return value */
/* {r0-r3,r12,LR,PC,xPSR} are saved automatically on exception entry */
asm("push {r4-r11}");
/* save unsaved registers */
asm("push {LR}");
/* save exception return value */
asm("ldr r1, =active_thread");
/* load address of currend pdc */
asm("ldr r1, [r1]");
/* deref pdc */
asm("str sp, [r1]");
/* write sp to pdc->sp means current threads stack pointer */
asm("ldr r1, =active_thread");
/* load address of currend pdc */
asm("ldr r1, [r1]");
/* deref pdc */
asm("str sp, [r1]");
/* write sp to pdc->sp means current threads stack pointer */
}
void restore_context(void)
{
asm("ldr r0, =active_thread");
/* load address of currend pdc */
asm("ldr r0, [r0]");
/* deref pdc */
asm("ldr sp, [r0]");
/* load pdc->sp to sp register */
asm("ldr r0, =active_thread");
/* load address of currend pdc */
asm("ldr r0, [r0]");
/* deref pdc */
asm("ldr sp, [r0]");
/* load pdc->sp to sp register */
asm("pop {r0}");
/* restore exception retrun value from stack */
asm("pop {r4-r11}");
/* load unloaded register */
// asm("pop {r4}"); /*foo*/
asm("bx r0"); /* load exception return value to pc causes end of exception*/
/* {r0-r3,r12,LR,PC,xPSR} are restored automatically on exception return */
asm("pop {r0}");
/* restore exception retrun value from stack */
asm("pop {r4-r11}");
/* load unloaded register */
// asm("pop {r4}"); /*foo*/
asm("bx r0"); /* load exception return value to pc causes end of exception*/
/* {r0-r3,r12,LR,PC,xPSR} are restored automatically on exception return */
}
#define USR_RESET (0x102)