Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / arch / nios2 / include / asm / system.h

diff --git a/qemu/roms/u-boot/arch/nios2/include/asm/system.h b/qemu/roms/u-boot/arch/nios2/include/asm/system.h
new file mode 100644 (file)
index 0000000..6213a16
--- /dev/null
+++ b/qemu/roms/u-boot/arch/nios2/include/asm/system.h
@@ -0,0 +1,48 @@
+/*
+ * (C) Copyright 2004, Psyent Corporation <www.psyent.com>
+ * Scott McNutt <smcnutt@psyent.com>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+#ifndef __ASM_NIOS2_SYSTEM_H_
+#define __ASM_NIOS2_SYSTEM_H_
+
+#define local_irq_enable() __asm__ __volatile__ (  \
+       "rdctl  r8, status\n"                      \
+       "ori    r8, r8, 1\n"                       \
+       "wrctl  status, r8\n"                      \
+       : : : "r8")
+
+#define local_irq_disable() __asm__ __volatile__ ( \
+       "rdctl  r8, status\n"                      \
+       "andi   r8, r8, 0xfffe\n"                  \
+       "wrctl  status, r8\n"                      \
+       : : : "r8")
+
+#define local_save_flags(x) __asm__ __volatile__ (     \
+       "rdctl  r8, status\n"                           \
+       "mov    %0, r8\n"                               \
+       : "=r" (x) : : "r8", "memory")
+
+#define local_irq_restore(x) __asm__ __volatile__ (    \
+       "mov    r8, %0\n"                               \
+       "wrctl  status, r8\n"                           \
+       : : "r" (x) : "r8", "memory")
+
+/* For spinlocks etc */
+#define local_irq_save(x) do { local_save_flags(x); local_irq_disable(); } \
+       while (0)
+
+#define        irqs_disabled()                                 \
+({                                                     \
+       unsigned long flags;                            \
+       local_save_flags(flags);                        \
+       ((flags & NIOS2_STATUS_PIE_MSK) == 0x0);        \
+})
+
+/* indirect call to go beyond 256MB limitation of toolchain */
+#define nios2_callr(addr) __asm__ __volatile__ (       \
+       "callr  %0"                                     \
+       : : "r" (addr))
+
+#endif /* __ASM_NIOS2_SYSTEM_H */