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