1//===-- elfnix_tlv.aarch64.s ---------------------------------------*- ASM -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file is a part of the ORC runtime support library.
10//
11//===----------------------------------------------------------------------===//
12
13// The content of this file is aarch64-only
14#if defined(__arm64__) || defined(__aarch64__)
15
16#define REGISTER_SAVE_SPACE_SIZE 32 * 24
17
18 .text
19
20 // returns address of TLV in x0, all other registers preserved
21 // TODO: add fast-path for repeat access
22 .globl ___orc_rt_elfnix_tlsdesc_resolver
23___orc_rt_elfnix_tlsdesc_resolver:
24 sub sp, sp, #REGISTER_SAVE_SPACE_SIZE
25 stp x29, x30, [sp, #16 * 1]
26 stp x27, x28, [sp, #16 * 2]
27 stp x25, x26, [sp, #16 * 3]
28 stp x23, x24, [sp, #16 * 4]
29 stp x21, x22, [sp, #16 * 5]
30 stp x19, x20, [sp, #16 * 6]
31 stp x17, x18, [sp, #16 * 7]
32 stp x15, x16, [sp, #16 * 8]
33 stp x13, x14, [sp, #16 * 9]
34 stp x11, x12, [sp, #16 * 10]
35 stp x9, x10, [sp, #16 * 11]
36 stp x7, x8, [sp, #16 * 12]
37 stp x5, x6, [sp, #16 * 13]
38 stp x3, x4, [sp, #16 * 14]
39 stp x1, x2, [sp, #16 * 15]
40 stp q30, q31, [sp, #32 * 8]
41 stp q28, q29, [sp, #32 * 9]
42 stp q26, q27, [sp, #32 * 10]
43 stp q24, q25, [sp, #32 * 11]
44 stp q22, q23, [sp, #32 * 12]
45 stp q20, q21, [sp, #32 * 13]
46 stp q18, q19, [sp, #32 * 14]
47 stp q16, q17, [sp, #32 * 15]
48 stp q14, q15, [sp, #32 * 16]
49 stp q12, q13, [sp, #32 * 17]
50 stp q10, q11, [sp, #32 * 18]
51 stp q8, q9, [sp, #32 * 19]
52 stp q6, q7, [sp, #32 * 20]
53 stp q4, q5, [sp, #32 * 21]
54 stp q2, q3, [sp, #32 * 22]
55 stp q0, q1, [sp, #32 * 23]
56
57 mrs x1, TPIDR_EL0 // get thread pointer
58 bl ___orc_rt_elfnix_tlsdesc_resolver_impl
59
60 ldp q0, q1, [sp, #32 * 23]
61 ldp q2, q3, [sp, #32 * 22]
62 ldp q4, q5, [sp, #32 * 21]
63 ldp q6, q7, [sp, #32 * 20]
64 ldp q8, q9, [sp, #32 * 19]
65 ldp q10, q11, [sp, #32 * 18]
66 ldp q12, q13, [sp, #32 * 17]
67 ldp q14, q15, [sp, #32 * 16]
68 ldp q16, q17, [sp, #32 * 15]
69 ldp q18, q19, [sp, #32 * 14]
70 ldp q20, q21, [sp, #32 * 13]
71 ldp q22, q23, [sp, #32 * 12]
72 ldp q24, q25, [sp, #32 * 11]
73 ldp q26, q27, [sp, #32 * 10]
74 ldp q28, q29, [sp, #32 * 9]
75 ldp q30, q31, [sp, #32 * 8]
76 ldp x1, x2, [sp, #16 * 15]
77 ldp x3, x4, [sp, #16 * 14]
78 ldp x5, x6, [sp, #16 * 13]
79 ldp x7, x8, [sp, #16 * 12]
80 ldp x9, x10, [sp, #16 * 11]
81 ldp x11, x12, [sp, #16 * 10]
82 ldp x13, x14, [sp, #16 * 9]
83 ldp x15, x16, [sp, #16 * 8]
84 ldp x17, x18, [sp, #16 * 7]
85 ldp x19, x20, [sp, #16 * 6]
86 ldp x21, x22, [sp, #16 * 5]
87 ldp x23, x24, [sp, #16 * 4]
88 ldp x25, x26, [sp, #16 * 3]
89 ldp x27, x28, [sp, #16 * 2]
90 ldp x29, x30, [sp, #16 * 1]
91 add sp, sp, #REGISTER_SAVE_SPACE_SIZE
92 ret
93
94#endif // defined(__arm64__) || defined(__aarch64__)
95

source code of compiler-rt/lib/orc/elfnix_tls.aarch64.S