| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | /* |
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| 3 | * Function calling ABI conversion from Linux to EFI for x86_64 |
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| 4 | * |
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| 5 | * Copyright (C) 2007 Intel Corp |
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| 6 | * Bibo Mao <bibo.mao@intel.com> |
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| 7 | * Huang Ying <ying.huang@intel.com> |
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| 8 | */ |
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| 9 | |
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| 10 | #include <linux/linkage.h> |
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| 11 | #include <asm/nospec-branch.h> |
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| 12 | |
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| 13 | SYM_FUNC_START(__efi_call) |
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| 14 | /* |
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| 15 | * The EFI code doesn't have any CFI, annotate away the CFI violation. |
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| 16 | */ |
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| 17 | ANNOTATE_NOCFI_SYM |
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| 18 | pushq %rbp |
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| 19 | movq %rsp, %rbp |
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| 20 | and $~0xf, %rsp |
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| 21 | mov 16(%rbp), %rax |
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| 22 | subq $48, %rsp |
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| 23 | mov %r9, 32(%rsp) |
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| 24 | mov %rax, 40(%rsp) |
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| 25 | mov %r8, %r9 |
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| 26 | mov %rcx, %r8 |
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| 27 | mov %rsi, %rcx |
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| 28 | CALL_NOSPEC rdi |
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| 29 | leave |
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| 30 | RET |
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| 31 | SYM_FUNC_END(__efi_call) |
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| 32 | |
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