| 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
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| 2 | /* |
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| 3 | * Quadword loads and stores |
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| 4 | * for use in instruction emulation. |
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| 5 | * |
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| 6 | * Copyright 2017 Paul Mackerras, IBM Corp. <paulus@au1.ibm.com> |
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| 7 | */ |
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| 8 | |
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| 9 | #include <asm/processor.h> |
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| 10 | #include <asm/ppc_asm.h> |
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| 11 | #include <asm/ppc-opcode.h> |
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| 12 | #include <asm/reg.h> |
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| 13 | #include <asm/asm-offsets.h> |
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| 14 | #include <linux/errno.h> |
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| 15 | |
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| 16 | /* do_lq(unsigned long ea, unsigned long *regs) */ |
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| 17 | _GLOBAL(do_lq) |
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| 18 | 1: lq r6, 0(r3) |
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| 19 | std r6, 0(r4) |
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| 20 | std r7, 8(r4) |
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| 21 | li r3, 0 |
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| 22 | blr |
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| 23 | 2: li r3, -EFAULT |
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| 24 | blr |
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| 25 | EX_TABLE(1b, 2b) |
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| 26 | |
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| 27 | /* do_stq(unsigned long ea, unsigned long val0, unsigned long val1) */ |
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| 28 | _GLOBAL(do_stq) |
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| 29 | 1: stq r4, 0(r3) |
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| 30 | li r3, 0 |
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| 31 | blr |
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| 32 | 2: li r3, -EFAULT |
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| 33 | blr |
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| 34 | EX_TABLE(1b, 2b) |
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| 35 | |
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| 36 | /* do_lqarx(unsigned long ea, unsigned long *regs) */ |
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| 37 | _GLOBAL(do_lqarx) |
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| 38 | 1: PPC_LQARX(6, 0, 3, 0) |
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| 39 | std r6, 0(r4) |
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| 40 | std r7, 8(r4) |
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| 41 | li r3, 0 |
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| 42 | blr |
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| 43 | 2: li r3, -EFAULT |
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| 44 | blr |
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| 45 | EX_TABLE(1b, 2b) |
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| 46 | |
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| 47 | /* do_stqcx(unsigned long ea, unsigned long val0, unsigned long val1, |
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| 48 | unsigned int *crp) */ |
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| 49 | |
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| 50 | _GLOBAL(do_stqcx) |
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| 51 | 1: PPC_STQCX(4, 0, 3) |
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| 52 | mfcr r5 |
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| 53 | stw r5, 0(r6) |
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| 54 | li r3, 0 |
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| 55 | blr |
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| 56 | 2: li r3, -EFAULT |
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| 57 | blr |
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| 58 | EX_TABLE(1b, 2b) |
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| 59 | |
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