SYSCALL naked assembly working

[cortex-from-scratch] / main.c

diff --git a/main.c b/main.c
index 26a7305..e87131a 100644 (file)
--- a/main.c
+++ b/main.c
@@ -32,6 +32,40 @@
 #include <drivers/st7735s.h>
 
 
+#include <lib/syscall.h>
+
+int test3(int i, int j) {
+
+       volatile uint32_t * sp = get_msp();
+       
+       /* asm volatile (
+       "tst lr, #4" "\n\t" 
+       "ite eq" "\n\t"
+       "mrseq %0, msp" "\n\t" 
+       "mrsne r0, psp" : "=r" (sp) ); */
+
+       for (int i = 0; (sp + i) < 0x20010000; i++) {
+               printf("ADDRESS: %p, VALUE: %x\n", (sp + i), *(sp + i));
+       }
+
+       for(;;);
+       return 0xCC;
+
+}
+int test2(int i, int j) {
+
+       int x = i * j;
+       test3(0x3A, 0x3B); 
+       
+
+}
+int test(int i, int j) {
+
+       test2(0x2A, 0x2B);
+       
+       return 0xAA;
+}
+
 void main()
 {
 
@@ -56,7 +90,7 @@ void main()
        init_printf(NULL, putc);
 
        /* Heap init */
-       kheap_init();
+       //kheap_init();
        //printf("%p\n", get_kheap());
        
        /* Display some basic info at startup */
@@ -66,8 +100,13 @@ void main()
        led_init();
 
        /* Real time clock */
-       rtc_init();
+       //rtc_init();
+
+//     printf("press any key to start\n");
+//     asm volatile ("wfi");
 
+       syscall_init();
+       theos_test(0xA1, 0xA2);
 
        /* Eeprom Driver
        eeprom_at24c_init();