xref: /llvm-project/lld/test/ELF/aarch64-cortex-a53-843419-thunk-range.s (revision 6d637fa560f0196b93e377b98489661ecd7a1af0) 
1// REQUIRES: aarch64
2// RUN: split-file %s %t
3// RUN: llvm-mc -filetype=obj -triple=aarch64 --asm-macro-max-nesting-depth=40000 %t/asm -o %t.o
4// RUN: ld.lld -T %t/lds -fix-cortex-a53-843419 %t.o -o %t2 --print-map 2>&1 | FileCheck %s
5/// %t2 is more than 128MiB. Delete it early.
6// RUN: rm %t.o %t2
7
8//--- asm
9/// We use %(\parameter) to evaluate expression, which requires .altmacro.
10 .altmacro
11
12/// Test to reproduce the conditions that trigger R_AARCH64_JUMP26 out of range
13/// errors in pr44071. We create a large number of patches and thunks, with an
14/// LLD with the fault, the patches will be inserted after the thunks and due
15/// to the size of the thunk section some of the patches go out of range.
16/// With a fixed LLD the patches are inserted before the thunks.
17
18// CHECK: <internal>:(.text.patch)
19// CHECK: <internal>:(.text.thunk)
20
21/// Macro to generate the cortex-a53-843419 patch sequence
22 .macro ERRATA from, to
23   .balign 4096
24   .space 4096 - 8
25   adrp x0, dat1
26   ldr x1, [x1, #0]
27   ldr x0, [x0, :got_lo12:dat1]
28   ret
29   .if (\to-\from)
30     ERRATA %(\from+1),\to
31   .endif
32 .endm
33
34 .section .text.01, "ax", %progbits
35 .balign 4096
36 .globl _start
37 .type _start, %function
38 .space 4096 - 8
39_start:
40/// Generate lots of patches.
41 ERRATA 0, 4000
42
43 .macro CALLS from, to
44   bl far\from
45   .if (\to-\from)
46     CALLS %(\from+1),\to
47   .endif
48 .endm
49
50 /// Generate long range thunks. These are inserted before the patches. Generate
51 /// a sufficient number such that the patches must be placed before the
52 /// .text.thunk section, and if they aren't some of the patches go out of
53 /// range.
54 .section .text.02, "ax", %progbits
55 .global func
56 .type func, %function
57func:
58 CALLS 0, 20000
59
60 .section .text.03, "ax", %progbits
61 .global space1
62space1:
63 .space (1024 * 1024 * 96) + (120 * 4 * 1024)
64 .balign 4096
65
66 .section .text.04, "ax", %progbits
67 .global space2
68space2:
69 .space 1024 * 1024
70
71 .macro DEFS from, to
72   .global far\from
73   .type far\from, %function
74far\from:
75   ret
76   .if (\to-\from)
77     DEFS %(\from+1),\to
78   .endif
79 .endm
80
81 /// Define the thunk targets
82 .section .target, "ax", %progbits
83 DEFS 0, 20000
84
85 .data
86 .global dat1
87dat1:
88 .xword 0
89
90//--- lds
91PHDRS {
92  low PT_LOAD FLAGS(0x1 | 0x4);
93  high PT_LOAD FLAGS(0x1 | 0x4);
94}
95SECTIONS {
96  .text1 0x10000 : { *(.text.*) } :low
97  .text2 0xf010000 : { *(.target) } :high
98}
99