# REQUIRES: x86 # RUN: llvm-mc -filetype=obj -triple=x86_64-linux %s -o %t.o # RUN: echo "SECTIONS { .data 0x4000 : {*(.data)} .dynsym 0x2000 : {*(.dynsym)} .dynstr : {*(.dynstr)} }" > %t.script # RUN: ld.lld --hash-style=sysv -o %t.so --script %t.script %t.o -shared # RUN: llvm-objdump --section-headers %t.so | FileCheck %s # Note: how the layout is done: # we need to layout 2 segments, each contains sections: # seg1: .data .dynamic # seg2: .dynsym .dynstr .text .hash # for each segment, we start from the first section, regardless # whether it is an orphan or not (sections that are not listed in the # linkerscript are orphans): # for seg1, we assign address: .data(0x4000), .dynamic(0x4008) # for seg2, we assign address: .dynsym(0x2000), .dynstr(0x2018) ... # .dynsym is not an orphan, so we take address from script, we assign # .dynstr current address cursor, which is the end # of .dynsym and so # on for later sections. # Also note, it is absolutely *illegal* to have section addresses of # the same segment in none-increasing order, authors of linker scripts # must take responsibility to make sure this does not happen. # CHECK: Sections: # CHECK-NEXT: Idx Name Size VMA Type # CHECK-NEXT: 0 00000000 0000000000000000 # CHECK-NEXT: 1 .dynamic 00000060 0000000000000000 # CHECK-NEXT: 2 .data 00000008 0000000000004000 # CHECK-NEXT: 3 .dynsym 00000018 0000000000002000 # CHECK-NEXT: 4 .dynstr 00000001 0000000000002018 # CHECK-NEXT: 5 .hash 00000010 000000000000201c # CHECK-NEXT: 6 .text 00000008 000000000000202c # RUN: ld.lld -e 0 -o %t --script %t.script %t.o --fatal-warnings # RUN: llvm-readelf -Sl %t | FileCheck %s --check-prefix=CHECK1 # CHECK1: Name Type Address Off Size ES Flg Lk Inf Al # CHECK1-NEXT: NULL 0000000000000000 000000 000000 00 0 0 0 # CHECK1-NEXT: .text PROGBITS 0000000000000000 001000 000008 00 AX 0 0 4 # CHECK1-NEXT: .data PROGBITS 0000000000004000 002000 000008 00 WA 0 0 1 # CHECK1: Program Headers: # CHECK1-NEXT: Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align # CHECK1-NEXT: LOAD 0x001000 0x0000000000000000 0x0000000000000000 0x000008 0x000008 R E 0x1000 # CHECK1-NEXT: LOAD 0x002000 0x0000000000004000 0x0000000000004000 0x000008 0x000008 RW 0x1000 .quad 0 .data .quad 0