1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
| /* SPDX-License-Identifier: GPL-2.0 */
| /*
| * Function calling ABI conversion from Linux to EFI for x86_64
| *
| * Copyright (C) 2007 Intel Corp
| * Bibo Mao <bibo.mao@intel.com>
| * Huang Ying <ying.huang@intel.com>
| */
|
| #include <linux/linkage.h>
| #include <asm/segment.h>
| #include <asm/msr.h>
| #include <asm/processor-flags.h>
| #include <asm/page_types.h>
|
| #define SAVE_XMM \
| mov %rsp, %rax; \
| subq $0x70, %rsp; \
| and $~0xf, %rsp; \
| mov %rax, (%rsp); \
| mov %cr0, %rax; \
| clts; \
| mov %rax, 0x8(%rsp); \
| movaps %xmm0, 0x60(%rsp); \
| movaps %xmm1, 0x50(%rsp); \
| movaps %xmm2, 0x40(%rsp); \
| movaps %xmm3, 0x30(%rsp); \
| movaps %xmm4, 0x20(%rsp); \
| movaps %xmm5, 0x10(%rsp)
|
| #define RESTORE_XMM \
| movaps 0x60(%rsp), %xmm0; \
| movaps 0x50(%rsp), %xmm1; \
| movaps 0x40(%rsp), %xmm2; \
| movaps 0x30(%rsp), %xmm3; \
| movaps 0x20(%rsp), %xmm4; \
| movaps 0x10(%rsp), %xmm5; \
| mov 0x8(%rsp), %rsi; \
| mov %rsi, %cr0; \
| mov (%rsp), %rsp
|
| ENTRY(efi_call)
| pushq %rbp
| movq %rsp, %rbp
| SAVE_XMM
| mov 16(%rbp), %rax
| subq $48, %rsp
| mov %r9, 32(%rsp)
| mov %rax, 40(%rsp)
| mov %r8, %r9
| mov %rcx, %r8
| mov %rsi, %rcx
| call *%rdi
| addq $48, %rsp
| RESTORE_XMM
| popq %rbp
| ret
| ENDPROC(efi_call)
|
|
