# REQUIRES: x86 ## Test R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX GOT optimization. # RUN: llvm-mc -filetype=obj -relax-relocations -triple=x86_64-unknown-linux %s -o %t.o # RUN: ld.lld %t.o -o %t1 --no-apply-dynamic-relocs # RUN: llvm-readelf -S -r -x .got.plt %t1 | FileCheck --check-prefixes=CHECK,NOAPPLY %s # RUN: ld.lld %t.o -o %t1 --apply-dynamic-relocs # RUN: llvm-readelf -S -r -x .got.plt %t1 | FileCheck --check-prefixes=CHECK,APPLY %s # RUN: ld.lld %t.o -o %t1 # RUN: llvm-objdump --no-print-imm-hex -d %t1 | FileCheck --check-prefix=DISASM %s ## --no-relax disables GOT optimization. # RUN: ld.lld --no-relax %t.o -o %t2 # RUN: llvm-objdump --no-print-imm-hex -d %t2 | FileCheck --check-prefix=NORELAX %s ## In our implementation, .got is retained even if all GOT-generating relocations are optimized. # CHECK: Name Type Address Off Size ES Flg Lk Inf Al # CHECK: .iplt PROGBITS 0000000000201280 000280 000010 00 AX 0 0 16 # CHECK-NEXT: .got PROGBITS 0000000000202290 000290 000000 00 WA 0 0 8 ## There is one R_X86_64_IRELATIVE relocations. # RELOC-LABEL: Relocation section '.rela.dyn' at offset {{.*}} contains 1 entry: # CHECK: Offset Info Type Symbol's Value Symbol's Name + Addend # CHECK: 0000000000203290 0000000000000025 R_X86_64_IRELATIVE 2011e2 # CHECK-LABEL: Hex dump of section '.got.plt': # NOAPPLY-NEXT: 0x00203290 00000000 00000000 # APPLY-NEXT: 0x00203290 e2112000 00000000 # 0x201173 + 7 - 10 = 0x201170 # 0x20117a + 7 - 17 = 0x201170 # 0x201181 + 7 - 23 = 0x201171 # 0x201188 + 7 - 30 = 0x201171 # DISASM: Disassembly of section .text: # DISASM-EMPTY: # DISASM-NEXT: : # DISASM-NEXT: 2011e0: 90 nop # DISASM: : # DISASM-NEXT: 2011e1: 90 nop # DISASM: : # DISASM-NEXT: 2011e2: c3 retq # DISASM: <_start>: # DISASM-NEXT: leaq -10(%rip), %rax # DISASM-NEXT: leaq -17(%rip), %rax # DISASM-NEXT: leaq -23(%rip), %rax # DISASM-NEXT: leaq -30(%rip), %rax # DISASM-NEXT: movq 8330(%rip), %rax # DISASM-NEXT: movq 8323(%rip), %rax # DISASM-NEXT: leaq -52(%rip), %rax # DISASM-NEXT: leaq -59(%rip), %rax # DISASM-NEXT: leaq -65(%rip), %rax # DISASM-NEXT: leaq -72(%rip), %rax # DISASM-NEXT: movq 8288(%rip), %rax # DISASM-NEXT: movq 8281(%rip), %rax # DISASM-NEXT: callq 0x2011e0 # DISASM-NEXT: callq 0x2011e0 # DISASM-NEXT: callq 0x2011e1 # DISASM-NEXT: callq 0x2011e1 # DISASM-NEXT: callq *8251(%rip) # DISASM-NEXT: callq *8245(%rip) # DISASM-NEXT: jmp 0x2011e0 # DISASM-NEXT: nop # DISASM-NEXT: jmp 0x2011e0 # DISASM-NEXT: nop # DISASM-NEXT: jmp 0x2011e1 # DISASM-NEXT: nop # DISASM-NEXT: jmp 0x2011e1 # DISASM-NEXT: nop # DISASM-NEXT: jmpq *8215(%rip) # DISASM-NEXT: jmpq *8209(%rip) # NORELAX-LABEL: <_start>: # NORELAX-COUNT-12: movq # NORELAX-COUNT-6: callq * # NORELAX-COUNT-6: jmpq * .text .globl foo .type foo, @function foo: nop .globl hid .hidden hid .type hid, @function hid: nop .text .type ifunc STT_GNU_IFUNC .globl ifunc .type ifunc, @function ifunc: ret .globl _start .type _start, @function _start: movq foo@GOTPCREL(%rip), %rax movq foo@GOTPCREL(%rip), %rax movq hid@GOTPCREL(%rip), %rax movq hid@GOTPCREL(%rip), %rax movq ifunc@GOTPCREL(%rip), %rax movq ifunc@GOTPCREL(%rip), %rax movq foo@GOTPCREL(%rip), %rax movq foo@GOTPCREL(%rip), %rax movq hid@GOTPCREL(%rip), %rax movq hid@GOTPCREL(%rip), %rax movq ifunc@GOTPCREL(%rip), %rax movq ifunc@GOTPCREL(%rip), %rax call *foo@GOTPCREL(%rip) call *foo@GOTPCREL(%rip) call *hid@GOTPCREL(%rip) call *hid@GOTPCREL(%rip) call *ifunc@GOTPCREL(%rip) call *ifunc@GOTPCREL(%rip) jmp *foo@GOTPCREL(%rip) jmp *foo@GOTPCREL(%rip) jmp *hid@GOTPCREL(%rip) jmp *hid@GOTPCREL(%rip) jmp *ifunc@GOTPCREL(%rip) jmp *ifunc@GOTPCREL(%rip)