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new: USE_MSR_INTR support

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This commit is contained in:
Michal Simek
2007-05-07 23:58:31 +02:00
parent a7bac7e9b5
commit fb05f6da35
5 changed files with 60 additions and 7 deletions
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37
include/asm-microblaze/asm.h Normal file → Executable file
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@@ -39,5 +39,42 @@
#define MTS(val) \
__asm__ __volatile__ ("mts rmsr, %0"::"r" (val));
/* get return address from interrupt */
#define R14(val) \
__asm__ __volatile__ ("addi %0, r14, 0":"=r" (val));
/* use machine status registe USE_MSR_REG */
#ifdef XILINX_USE_MSR_INSTR
#define MSRSET(val) \
__asm__ __volatile__ ("msrset r0," #val );
#define MSRCLR(val) \
__asm__ __volatile__ ("msrclr r0," #val );
#else
#define MSRSET(val) \
{ \
register unsigned tmp; \
__asm__ __volatile__ (" \
mfs %0, rmsr; \
ori %0, %0, "#val"; \
mts rmsr, %0; \
nop;" \
: "=r" (tmp) \
: "d" (val) \
: "memory"); \
}
#define MSRCLR(val) \
{ \
register unsigned tmp; \
__asm__ __volatile__ (" \
mfs %0, rmsr; \
andi %0, %0, ~"#val"; \
mts rmsr, %0; \
nop;" \
: "=r" (tmp) \
: "d" (val) \
: "memory"); \
}
#endif