Merge branch 'master' into gfs2

1 files changed, 102 insertions, 0 deletions

diff --git a/include/asm-avr32/asm.h b/include/asm-avr32/asm.h
new file mode 100644
index 000000000000..515c7618952b
--- /dev/null
+++ b/include/asm-avr32/asm.h
@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2004-2006 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __ASM_AVR32_ASM_H__
+#define __ASM_AVR32_ASM_H__
+
+#include <asm/sysreg.h>
+#include <asm/asm-offsets.h>
+#include <asm/thread_info.h>
+
+#define mask_interrupts         ssrf    SR_GM_BIT
+#define mask_exceptions         ssrf    SR_EM_BIT
+#define unmask_interrupts       csrf    SR_GM_BIT
+#define unmask_exceptions       csrf    SR_EM_BIT
+
+#ifdef CONFIG_FRAME_POINTER
+        .macro  save_fp
+        st.w    --sp, r7
+        .endm
+        .macro  restore_fp
+        ld.w    r7, sp++
+        .endm
+        .macro  zero_fp
+        mov     r7, 0
+        .endm
+#else
+        .macro  save_fp
+        .endm
+        .macro  restore_fp
+        .endm
+        .macro  zero_fp
+        .endm
+#endif
+        .macro  get_thread_info reg
+        mov     \reg, sp
+        andl    \reg, ~(THREAD_SIZE - 1) & 0xffff
+        .endm
+
+        /* Save and restore registers */
+        .macro  save_min sr, tmp=lr
+        pushm   lr
+        mfsr    \tmp, \sr
+        zero_fp
+        st.w    --sp, \tmp
+        .endm
+
+        .macro  restore_min sr, tmp=lr
+        ld.w    \tmp, sp++
+        mtsr    \sr, \tmp
+        popm    lr
+        .endm
+
+        .macro  save_half sr, tmp=lr
+        save_fp
+        pushm   r8-r9,r10,r11,r12,lr
+        zero_fp
+        mfsr    \tmp, \sr
+        st.w    --sp, \tmp
+        .endm
+
+        .macro  restore_half sr, tmp=lr
+        ld.w    \tmp, sp++
+        mtsr    \sr, \tmp
+        popm    r8-r9,r10,r11,r12,lr
+        restore_fp
+        .endm
+
+        .macro  save_full_user sr, tmp=lr
+        stmts   --sp, r0,r1,r2,r3,r4,r5,r6,r7,r8,r9,r10,r11,r12,sp,lr
+        st.w    --sp, lr
+        zero_fp
+        mfsr    \tmp, \sr
+        st.w    --sp, \tmp
+        .endm
+
+        .macro  restore_full_user sr, tmp=lr
+        ld.w    \tmp, sp++
+        mtsr    \sr, \tmp
+        ld.w    lr, sp++
+        ldmts   sp++, r0,r1,r2,r3,r4,r5,r6,r7,r8,r9,r10,r11,r12,sp,lr
+        .endm
+
+        /* uaccess macros */
+        .macro branch_if_kernel scratch, label
+        get_thread_info \scratch
+        ld.w    \scratch, \scratch[TI_flags]
+        bld     \scratch, TIF_USERSPACE
+        brcc    \label
+        .endm
+
+        .macro ret_if_privileged scratch, addr, size, ret
+        sub     \scratch, \size, 1
+        add     \scratch, \addr
+        retcs   \ret
+        retmi   \ret
+        .endm
+
+#endif /* __ASM_AVR32_ASM_H__ */