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| // SPDX-License-Identifier: GPL-2.0+
|
| /*
| * Copyright 2019, Michael Ellerman, IBM Corp.
| */
|
| #include <ppc-asm.h>
|
| .data
|
| jump_table:
| .long 0x0
| .long (.Lstate_1 - .Lstate_0)
| .long (.Lstate_2 - .Lstate_0)
| .long (.Lstate_3 - .Lstate_0)
| .long (.Lstate_4 - .Lstate_0)
| .long (.Lstate_5 - .Lstate_0)
| .long (.Lstate_6 - .Lstate_0)
| .long (.Lstate_7 - .Lstate_0)
|
| .text
|
| #define ITER_SHIFT 31
|
| .macro state number
| .balign 32
| .Lstate_\number:
| .if \number==7
| li r3, 0
| .else
| li r3, \number+1
| .endif
| b .Lloop
| .endm
|
| FUNC_START(pattern_cache_loop)
| li r3, 0
| li r4, 1
| sldi r4, r4, ITER_SHIFT
|
| .Lloop: cmpdi r4, 0
| beqlr
|
| addi r4, r4, -1
|
| ld r6, jump_table@got(%r2)
| sldi r5, r3, 2
| lwax r6, r5, r6
| ld r7, .Lstate_0@got(%r2)
| add r6, r6, r7
| mtctr r6
| bctr
|
| state 0
| state 1
| state 2
| state 3
| state 4
| state 5
| state 6
| state 7
|
| FUNC_END(pattern_cache_loop)
|
|
| FUNC_START(indirect_branch_loop)
| li r3, 1
| sldi r3, r3, ITER_SHIFT
|
| 1: cmpdi r3, 0
| beqlr
|
| addi r3, r3, -1
|
| ld r4, 2f@got(%r2)
| mtctr r4
| bctr
|
| .balign 32
| 2: b 1b
|
| FUNC_END(indirect_branch_loop)
|
|
