selected processor does not support

i what to make free rtos soft with using interupt but i have strange complilation erorr : C:DOCUME~1TomaszUSTAWI~1Temp/ccOqaaaa.s:121: Error: selected processor does not support `stmdb SP!,{R0}’ C:DOCUME~1TomaszUSTAWI~1Temp/ccOqaaaa.s:122: Error: selected processor does not support `stmdb SP,{SP}^’ C:DOCUME~1TomaszUSTAWI~1Temp/ccOqaaaa.s:125: Error: lo register required — `ldmia SP!,{R0}’ C:DOCUME~1TomaszUSTAWI~1Temp/ccOqaaaa.s:126: Error: selected processor does not support `stmdb R0!,{LR}’ C:DOCUME~1TomaszUSTAWI~1Temp/ccOqaaaa.s:128: Error: lo register required — `ldmia SP!,{R0}’ C:DOCUME~1TomaszUSTAWI~1Temp/ccOqaaaa.s:129: Error: selected processor does not support `stmdb LR,{R0-LR}^’ C:DOCUME~1TomaszUSTAWI~1Temp/ccOqaaaa.s:131: Error: lo register required — `sub LR,LR,#60′ C:DOCUME~1TomaszUSTAWI~1Temp/ccOqaaaa.s:132: Error: selected processor does not support `mrs R0,SPSR’ C:DOCUME~1TomaszUSTAWI~1Temp/ccOqaaaa.s:133: Error: selected processor does not support `stmdb LR!,{R0}’ C:DOCUME~1TomaszUSTAWI~1Temp/ccOqaaaa.s:136: Error: selected processor does not support `stmdb LR!,{R0}’ C:DOCUME~1TomaszUSTAWI~1Temp/ccOqaaaa.s:139: Error: lo register required — `str LR,[R0]’ C:DOCUME~1TomaszUSTAWI~1Temp/ccOqaaaa.s:146: Error: lo register required — `sub R11,LR,#4′ C:DOCUME~1TomaszUSTAWI~1Temp/ccOqaaaa.s:180: Error: lo register required — `ldr LR,[R0]’ C:DOCUME~1TomaszUSTAWI~1Temp/ccOqaaaa.s:182: Error: lo register required — `ldmfd LR!,{R1}’ C:DOCUME~1TomaszUSTAWI~1Temp/ccOqaaaa.s:184: Error: lo register required — `ldmfd LR!,{R0}’ C:DOCUME~1TomaszUSTAWI~1Temp/ccOqaaaa.s:185: Error: selected processor does not support `msr SPSR,R0′ C:DOCUME~1TomaszUSTAWI~1Temp/ccOqaaaa.s:186: Error: Thumb load/store multiple does not support {reglist}^ — `ldmfd LR,{R0-R14}^’ C:DOCUME~1TomaszUSTAWI~1Temp/ccOqaaaa.s:188: Error: lo register required — `ldr LR,[LR,#+60]’ C:DOCUME~1TomaszUSTAWI~1Temp/ccOqaaaa.s:189: Error: instruction not supported in Thumb16 mode — `subs PC,LR,#4′ my soft code : #include <stdlib.h> #include <stdio.h> /* Scheduler includes. */ #include "FreeRTOS.h" #include "task.h" #include "lib_AT91SAM7S256.h" #include "Board.h" static void task_1( void *pvParameters ); static void task_2( void *pvParameters ); void timer0_c_irq_handler(void) __attribute__ ((naked)); void timer_init ( void ); #define TC_CLKS                  0x7 #define TC_CLKS_MCK2             0x0 #define TC_CLKS_MCK8             0x1 #define TC_CLKS_MCK32            0x2 #define TC_CLKS_MCK128           0x3 #define TC_CLKS_MCK1024          0x4 int main( void ) {    AT91C_BASE_PMC->PMC_PCER = 1 << AT91C_ID_PIOA;   //rejest dopuszczaja zegar do peryferi    AT91F_PIO_CfgOutput( AT91C_BASE_PIOA, LED_MASK );    timer_init ();    xTaskCreate( task_1, ( const signed portCHAR * const )  "LED1", configMINIMAL_STACK_SIZE, ( void * ) NULL,tskIDLE_PRIORITY + 3 , ( xTaskHandle * ) NULL ); //utozenie wontka //   xTaskCreate( task_2, ( const signed portCHAR * const )  "LED2", configMINIMAL_STACK_SIZE, ( void * ) NULL,tskIDLE_PRIORITY + 3 , ( xTaskHandle * ) NULL ); //utozenie wontka       vTaskStartScheduler(); //start system    return 0; } /*———————————————————–*/ void timer0_c_irq_handler(void) { portENTER_SWITCHING_ISR(); portBASE_TYPE xSwitchRequired = pdFALSE; AT91PS_TC TC_pt = AT91C_BASE_TC0; unsigned int dummy; //* Acknowledge interrupt status dummy = TC_pt->TC_SR; //* Suppress warning variable "dummy" was set but never used dummy = dummy; //* Read the output state if ( (AT91F_PIO_GetInput(AT91C_BASE_PIOA) & LED1 ) == LED1 ) { AT91F_PIO_ClearOutput( AT91C_BASE_PIOA, LED1 ); } else { AT91F_PIO_SetOutput( AT91C_BASE_PIOA, LED1 ); } *AT91C_AIC_EOICR = 0; // kasujemy flage przerwania portEXIT_SWITCHING_ISR( xSwitchRequired ); } static void task_2( void *pvParameters ) {     while(1) {     vTaskDelay(portTICK_RATE_MS*200);     if ((AT91F_PIO_GetInput(AT91C_BASE_PIOA) & LED1 ) == LED1 )     {AT91F_PIO_ClearOutput( AT91C_BASE_PIOA, LED1 ); }     else {AT91F_PIO_SetOutput( AT91C_BASE_PIOA, LED1 );}         } } static void task_1( void *pvParameters ) {     while(1) {     vTaskDelay(portTICK_RATE_MS*500);     if ( (AT91F_PIO_GetInput(AT91C_BASE_PIOA) & LED3 ) == LED3 )     {AT91F_PIO_ClearOutput( AT91C_BASE_PIOA, LED3 ); }     else {AT91F_PIO_SetOutput( AT91C_BASE_PIOA, LED3 );}         } } void AT91F_TC_Open ( AT91PS_TC TC_pt, unsigned int Mode, unsigned int TimerId) //* Begin {     unsigned int dummy;     //* First, enable the clock of the TIMER         AT91F_PMC_EnablePeriphClock ( AT91C_BASE_PMC, 1<< TimerId ) ;     //* Disable the clock and the interrupts     TC_pt->TC_CCR = AT91C_TC_CLKDIS ;     TC_pt->TC_IDR = 0xFFFFFFFF ;     //* Clear status bit         dummy = TC_pt->TC_SR;     //* Suppress warning variable "dummy" was set but never used         dummy = dummy;     //* Set the Mode of the Timer Counter     TC_pt->TC_CMR = Mode ;     //* Enable the clock     TC_pt->TC_CCR = AT91C_TC_CLKEN ; //* End } void timer_init ( void ) { portENTER_CRITICAL(); //* Open timer0 AT91F_TC_Open(AT91C_BASE_TC0,TC_CLKS_MCK8,AT91C_ID_TC0); //* Open Timer 0 interrupt //AT91F_AIC_ConfigureIt ( AT91C_BASE_AIC, AT91C_ID_TC0, 4,AT91C_AIC_SRCTYPE_INT_HIGH_LEVEL, timer0_c_irq_handler); AT91C_BASE_TC0->TC_IER = AT91C_TC_CPCS; // IRQ enable CPC // AT91F_AIC_EnableIt (AT91C_BASE_AIC, AT91C_ID_TC0); AT91C_BASE_AIC->AIC_IECR = 0x1 << AT91C_ID_TC0; //* Start timer0 AT91C_BASE_TC0->TC_CCR = AT91C_TC_SWTRG ; portEXIT_CRITICAL(); //* End }

selected processor does not support

Don’t know but maybe you are attempting to compile ARM mode code when the compiler is set to THUMB mode?