File: ELF_external_to_absolute_conversion.s

package info (click to toggle)
swiftlang 6.0.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 2,519,992 kB
  • sloc: cpp: 9,107,863; ansic: 2,040,022; asm: 1,135,751; python: 296,500; objc: 82,456; f90: 60,502; lisp: 34,951; pascal: 19,946; sh: 18,133; perl: 7,482; ml: 4,937; javascript: 4,117; makefile: 3,840; awk: 3,535; xml: 914; fortran: 619; cs: 573; ruby: 573
file content (41 lines) | stat: -rw-r--r-- 1,388 bytes parent folder | download | duplicates (14) 
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
 
# RUN: llvm-mc -triple=i386-unknown-linux-gnu -filetype=obj -o %t %s
# RUN: llvm-jitlink -noexec %t
#
# Check that symbol scope is demoted to local when external symbols are
# converted to absolutes. This is demotion is necessary to avoid "unexpected
# definition" errors.
#
# The reference to _GLOBAL_OFFSET_TABLE_ will trigger creation of an external
# _GLOBAL_OFFSET_TABLE_ symbol, and the GOTOFF relocation will force creation
# of a GOT symbol without actually introducing any GOT entries. Together these
# should cause the external _GLOBAL_OFFSET_TABLE_ symbol to be converted to an
# absolute symbol with address zero. If the scope is not demoted correctly this
# will trigger an "unexpected definition" error.

        .text
        .globl  main                            
        .p2align        4, 0x90
        .type   main,@function
main:                    
        pushl   %ebp
        movl    %esp, %ebp
        pushl   %eax
        calll   .L0$pb
.L0$pb:
        popl    %eax
.Ltmp0:
        addl    $_GLOBAL_OFFSET_TABLE_+(.Ltmp0-.L0$pb), %eax
        movl    $0, -4(%ebp)
        movl    a@GOTOFF(%eax), %eax
        addl    $4, %esp
        popl    %ebp
        retl
        .size   main, .-main


        .type   a,@object                       # @a
        .data
        .p2align        2
a:
        .long   42                              # 0x2a
        .size   a, 4