47 lines
992 B
ArmAsm
47 lines
992 B
ArmAsm
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.file "cpu-ppc.linux.S"
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.section ".text"
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.align 2
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.globl flush_icache
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.type flush_icache, @function
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flush_icache:
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add 4,4,3 # end += ptr
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#ifdef _ARCH_PPC64
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clrrdi 3,3,5 # ptr &= ~0x1f
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#else
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clrrwi 3,3,5 # ptr &= ~0x1f
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#endif
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sub 4,4,3 # end -= aligned_ptr
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addi 4,4,0x1f # end += 0x1f
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#ifdef _ARCH_PPC64
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srdi. 4,4,5 # end >>= 5, set cr
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#else
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srwi. 4,4,5 # end >>= 5, set cr
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#endif
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beqlr
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# Loop over the buffer by cache line and flush the data cache.
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mr 5,3
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mtctr 4
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loop1:
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dcbst 0,5
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addi 5,5,0x20
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bdnz loop1
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# Synchronize to ensure the cache line flushes are complete.
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sync
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# Loop over the buffer by cache line and flush the instruction cache.
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mr 5,3
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mtctr 4
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loop2:
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icbi 0,5
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addi 5,5,0x20
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bdnz loop2
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# Clear instruction pipeline to force reloading of instructions.
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isync
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blr
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.size flush_icache,.-flush_icache
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.section .note.GNU-stack,"",@progbits
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