1 files changed, 55 insertions, 0 deletions
diff --git a/include/sys/core.h b/include/sys/core.h
new file mode 100644
index 0000000..2d611b3
--- /dev/null
+++ b/include/sys/core.h
@@ -0,0 +1,55 @@
+#ifndef SYS_CORE_H
+#define SYS_CORE_H
+
+#ifndef SYS_CORE_C
+extern char* os_info_v;
+#endif
+
+static inline unsigned long load32(unsigned long addr)
+{
+	return *(volatile unsigned long*)addr;
+}
+
+static inline void store32(unsigned long value, unsigned long addr)
+{
+	*(volatile unsigned long*)addr = value;
+}
+
+static inline void delay(unsigned long cycles)
+{
+	asm volatile("__delay_%=: subs %[cycles], %[cycles], #1;bne __delay_%=\n"
+			: "=r"(cycles): [cycles]"0"(cycles) : "cc");
+}
+
+static inline void preserveregs(void)
+{
+	asm volatile("push {r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11}");
+}
+
+static inline void restoreregs(void)
+{
+	asm volatile("pop {r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11}");
+}
+
+static inline void* getsp(void)
+{
+	void* out;
+	asm volatile ("mov %0, sp" : "=r"(out));
+	return out;
+}
+
+static inline void setsp(void* in)
+{
+	asm volatile ("mov sp, %0" :: "r"(in));
+}
+
+static inline void* heap_end(void)
+{
+	unsigned long value;
+	asm volatile ("ldr %0, =__bss_end": "=r"(value));
+	return (void*)value;
+}
+
+void sysinit(void);
+
+#endif