/* Portions taken from Linux arch arm */
#ifndef __ASM_ARM32_SYSTEM_H
#define __ASM_ARM32_SYSTEM_H

#include <asm/arm32/cmpxchg.h>

#define local_irq_disable() asm volatile ( "cpsid i @ local_irq_disable\n" : : : "cc" )
#define local_irq_enable()  asm volatile ( "cpsie i @ local_irq_enable\n" : : : "cc" )

#define local_save_flags(x)                                      \
({                                                               \
    BUILD_BUG_ON(sizeof(x) != sizeof(long));                     \
    asm volatile ( "mrs %0, cpsr     @ local_save_flags\n"       \
                  : "=r" (x) :: "memory", "cc" );                \
})
#define local_irq_save(x)                                        \
({                                                               \
    local_save_flags(x);                                         \
    local_irq_disable();                                         \
})
#define local_irq_restore(x)                                     \
({                                                               \
    BUILD_BUG_ON(sizeof(x) != sizeof(long));                     \
    asm volatile (                                               \
            "msr     cpsr_c, %0      @ local_irq_restore\n"      \
            :                                                    \
            : "r" (x)                                            \
            : "memory", "cc");                                   \
})

static inline int local_irq_is_enabled(void)
{
    unsigned long flags;
    local_save_flags(flags);
    return !(flags & PSR_IRQ_MASK);
}

#define local_fiq_enable()  __asm__("cpsie f   @ __stf\n" : : : "memory", "cc")
#define local_fiq_disable() __asm__("cpsid f   @ __clf\n" : : : "memory", "cc")

#define local_abort_enable() __asm__("cpsie a  @ __sta\n" : : : "memory", "cc")
#define local_abort_disable() __asm__("cpsid a @ __sta\n" : : : "memory", "cc")

static inline int local_fiq_is_enabled(void)
{
    unsigned long flags;
    local_save_flags(flags);
    return !(flags & PSR_FIQ_MASK);
}

#define CSDB    ".inst  0xe320f014"

static inline unsigned long array_index_mask_nospec(unsigned long idx,
                                                    unsigned long sz)
{
    unsigned long mask;

    asm volatile( "cmp    %1, %2\n"
                  "sbc    %0, %1, %1\n"
                  CSDB
                  : "=r" (mask)
                  : "r" (idx), "Ir" (sz)
                  : "cc" );

    return mask;
}
#define array_index_mask_nospec array_index_mask_nospec

#endif
/*
 * Local variables:
 * mode: C
 * c-file-style: "BSD"
 * c-basic-offset: 4
 * indent-tabs-mode: nil
 * End:
 */