xref: /llvm-project/lld/test/ELF/linkerscript/sections.s (revision 9328c20cc80c4fb8dc86c3141e1be1739e07b3fc)
1# REQUIRES: x86
2# RUN: rm -rf %t && split-file %s %t && cd %t
3# RUN: llvm-mc -filetype=obj -triple=x86_64 a.s -o a.o
4
5#--- empty.lds
6SECTIONS {}
7
8# RUN: ld.lld -o empty -T empty.lds a.o
9# RUN: llvm-objdump --section-headers empty | \
10# RUN:   FileCheck -check-prefix=SEC-DEFAULT %s
11
12#--- 1.lds
13# SECTIONS command with the same order as default.
14SECTIONS {
15   .text : { *(.text) }
16   .data : { *(.data) } }
17
18# RUN: ld.lld -o 1 -T 1.lds a.o
19# RUN: llvm-objdump --section-headers 1 | \
20# RUN:   FileCheck -check-prefix=SEC-DEFAULT %s
21
22#             Idx Name          Size
23# SEC-DEFAULT: 1 .text         0000000e {{[0-9a-f]*}} TEXT
24# SEC-DEFAULT: 2 .data         00000020 {{[0-9a-f]*}} DATA
25# SEC-DEFAULT: 3 other         00000003 {{[0-9a-f]*}} DATA
26# SEC-DEFAULT: 4 .bss          00000002 {{[0-9a-f]*}} BSS
27# SEC-DEFAULT: 5 .comment      00000008 {{[0-9a-f]*}}
28# SEC-DEFAULT: 6 .symtab       00000030 {{[0-9a-f]*}}
29# SEC-DEFAULT: 7 .shstrtab     0000003b {{[0-9a-f]*}}
30# SEC-DEFAULT: 8 .strtab       00000008 {{[0-9a-f]*}}
31
32# .text and .data have swapped names but proper sizes and types.
33# RUN: echo "SECTIONS { \
34# RUN:          .data : { *(.text) } \
35# RUN:          .text : { *(.data) } }" > t.lds
36# RUN: ld.lld -o %t4 --script t.lds a.o
37# RUN: llvm-objdump --section-headers %t4 | \
38# RUN:   FileCheck -check-prefix=SEC-SWAP-NAMES %s
39
40#                Idx Name          Size
41# SEC-SWAP-NAMES: 1 .data         0000000e {{[0-9a-f]*}} TEXT
42# SEC-SWAP-NAMES: 2 .text         00000020 {{[0-9a-f]*}} DATA
43# SEC-SWAP-NAMES: 3 other         00000003 {{[0-9a-f]*}} DATA
44# SEC-SWAP-NAMES: 4 .bss          00000002 {{[0-9a-f]*}} BSS
45# SEC-SWAP-NAMES: 5 .comment      00000008 {{[0-9a-f]*}}
46# SEC-SWAP-NAMES: 6 .symtab       00000030 {{[0-9a-f]*}}
47# SEC-SWAP-NAMES: 7 .shstrtab     0000003b {{[0-9a-f]*}}
48# SEC-SWAP-NAMES: 8 .strtab       00000008 {{[0-9a-f]*}}
49
50# Multiple SECTIONS command specifying additional input section descriptions
51# for the same output section description - input sections are merged into
52# one output section.
53# RUN: echo "SECTIONS { \
54# RUN:          .text : { *(.text) } \
55# RUN:          .data : { *(.data) } } \
56# RUN:       SECTIONS { \
57# RUN:          .data : { *(other) } }" > t.lds
58# RUN: ld.lld -o %t6 --script t.lds a.o
59# RUN: llvm-objdump --section-headers %t6 | \
60# RUN:   FileCheck -check-prefix=SEC-MULTI %s
61
62#           Idx Name          Size
63# SEC-MULTI:      1 .text         0000000e {{[0-9a-f]*}} TEXT
64# SEC-MULTI-NEXT:   .data         00000020 {{[0-9a-f]*}} DATA
65# SEC-MULTI-NEXT:   .data         00000003 {{[0-9a-f]*}} DATA
66# SEC-MULTI-NEXT:   .bss          00000002 {{[0-9a-f]*}} BSS
67# SEC-MULTI-NEXT:   .comment      00000008 {{[0-9a-f]*}}
68# SEC-MULTI-NEXT:   .symtab       00000030 {{[0-9a-f]*}}
69# SEC-MULTI-NEXT:   .shstrtab     00000035 {{[0-9a-f]*}}
70# SEC-MULTI-NEXT:   .strtab       00000008 {{[0-9a-f]*}}
71
72## other is placed in a PT_LOAD segment even if it is preceded by a non-alloc section.
73## The current implementation places .data, .bss, .comment and other in the same PT_LOAD.
74# RUN: echo 'SECTIONS { \
75# RUN:          .text : { *(.text) } \
76# RUN:          .data : { *(.data) } \
77# RUN:          .comment : { *(.comment) } \
78# RUN:          other : { *(other) } }' > %t5.lds
79# RUN: ld.lld -o %t5 -T %t5.lds a.o
80# RUN: llvm-readelf -S -l %t5 | FileCheck --check-prefix=SEP-BY-NONALLOC %s
81
82# SEP-BY-NONALLOC:      [Nr] Name      Type     Address          Off    Size   ES Flg
83# SEP-BY-NONALLOC:      [ 1] .text     PROGBITS 0000000000000000 001000 00000e 00  AX
84# SEP-BY-NONALLOC-NEXT: [ 2] .data     PROGBITS 000000000000000e 00100e 000020 00  WA
85# SEP-BY-NONALLOC-NEXT: [ 3] .comment  PROGBITS 0000000000000000 001031 000008 01  MS
86# SEP-BY-NONALLOC:      [ 4] other     PROGBITS 000000000000002e 00102e 000003 00  WA
87# SEP-BY-NONALLOC-NEXT: [ 5] .bss      NOBITS   0000000000000031 001031 000002 00  WA
88
89# SEP-BY-NONALLOC:      Type      Offset   VirtAddr           PhysAddr           FileSiz  MemSiz   Flg Align
90# SEP-BY-NONALLOC-NEXT: LOAD      0x001000 0x0000000000000000 0x0000000000000000 0x00000e 0x00000e R E 0x1000
91# SEP-BY-NONALLOC-NEXT: LOAD      0x00100e 0x000000000000000e 0x000000000000000e 0x000023 0x000025 RW  0x1000
92# SEP-BY-NONALLOC-NEXT: GNU_STACK 0x000000 0x0000000000000000 0x0000000000000000 0x000000 0x000000 RW  0
93
94#--- semi.lds
95# Input section pattern contains additional semicolon.
96# Case found in linux kernel script. Check we are able to parse it.
97SECTIONS { .text : { ;;*(.text);;S = 0;; } }
98
99# RUN: ld.lld -T semi.lds a.o
100
101#--- unclosed.lds
102SECTIONS {
103   .text : { *(.text) }
104
105# RUN: not ld.lld -T unclosed.lds a.o 2>&1 | FileCheck --check-prefix=UNCLOSED %s
106#     UNCLOSED:error: unclosed.lds:2: unexpected EOF
107# UNCLOSED-NOT:{{.}}
108
109#--- unclosed-out.lds
110SECTIONS {
111   .text : { *(.text)
112
113#--- a.s
114.globl _start
115_start:
116    mov $60, %rax
117    mov $42, %rdi
118
119.section .data,"aw"
120.quad 10, 10, 20, 20
121.section other,"aw"
122.short 10
123.byte 20
124.section .bss,"",@nobits
125.short 0
126