sparc: interrupt management functions

Change-Id: Icc689cc0cc0075fbccdad23f77cfa53b1f32df3c
Reviewed-on: https://review.haiku-os.org/c/1107
Reviewed-by: waddlesplash <[email protected]>

src/system/kernel/arch/sparc/arch_asm.S

@@ -0,0 +1,75 @@
+/*
+ * Copyright 2019, Adrien Destugues, pulkomandy@pulkomandy.tk
+ * Distributed under the terms of the MIT License.
+ */
+
+
+#include <asm_defs.h>
+
+
+.text
+
+
+/* void arch_int_enable_interrupts(void) */
+FUNCTION(arch_int_enable_interrupts):
+	rdpr %pstate, %o0
+	or   %o0, 2, %o0
+	wrpr %o0, 0, %pstate
+	ret
+FUNCTION_END(arch_int_enable_interrupts)
+
+
+/* int arch_int_disable_interrupts(void)
+ */
+FUNCTION(arch_int_disable_interrupts):
+	rdpr %pstate, %o1
+	// Set output register to previous state
+	and %o1, 2, %o0
+	// Clear interrupt bit
+	andn %o1, 2, %o1
+
+	wrpr %o1, 0, %pstate
+	ret
+FUNCTION_END(arch_int_disable_interrupts)
+
+
+/* void arch_int_restore_interrupts(int oldState)
+ */
+FUNCTION(arch_int_restore_interrupts):
+	rdpr %pstate, %o1
+	// Clear interrupt bit
+	andn %o1, 2, %o1
+	// Restore previous interript bit state
+	or %o1, %o0, %o1
+	wrpr %o1, 0, %pstate
+	ret
+FUNCTION_END(arch_int_restore_interrupts)
+
+
+/* bool arch_int_are_interrupts_enabled(void) */
+FUNCTION(arch_int_are_interrupts_enabled):
+	rdpr %pstate, %o0
+	andn %o0, 2, %o0
+	ret
+FUNCTION_END(arch_int_are_interrupts_enabled)
+
+
+/* status_t arch_cpu_user_memcpy(void *to, const void *from, size_t size, addr_t *faultHandler) */
+FUNCTION(_arch_cpu_user_memcpy):
+	// TODO
+	ret
+FUNCTION_END(_arch_cpu_user_memcpy)
+
+
+/* status_t arch_cpu_user_memset(void *to, char c, size_t count, addr_t *faultHandler) */
+FUNCTION(_arch_cpu_user_memset):
+	// TODO
+	ret
+FUNCTION_END(_arch_cpu_user_memset)
+
+
+/* ssize_t arch_cpu_user_strlcpy(void *to, const void *from, size_t size, addr_t *faultHandler) */
+FUNCTION(_arch_cpu_user_strlcpy):
+	// TODO
+	ret
+FUNCTION_END(_arch_cpu_user_strlcpy)