blob 243eff62 (3127B) - Raw
1 // RUN: llvm-mc -filetype=obj -triple=i686-pc-linux %S/Inputs/shared2-x86-64.s -o %t1.o 2 // RUN: ld.lld %t1.o --shared -o %t.so 3 // RUN: llvm-mc -filetype=obj -triple=i686-pc-linux %s -o %t.o 4 // RUN: ld.lld --hash-style=sysv %t.so %t.o -o %tout 5 // RUN: llvm-objdump -d %tout | FileCheck %s --check-prefix=DISASM 6 // RUN: llvm-objdump -s %tout | FileCheck %s --check-prefix=GOTPLT 7 // RUN: llvm-readobj -r -dynamic-table %tout | FileCheck %s 8 // REQUIRES: x86 9 10 // Check that the IRELATIVE relocations are after the JUMP_SLOT in the plt 11 // CHECK: Relocations [ 12 // CHECK-NEXT: Section (4) .rel.plt { 13 // CHECK-NEXT: 0x1200C R_386_JUMP_SLOT bar2 14 // CHECK-NEXT: 0x12010 R_386_JUMP_SLOT zed2 15 // CHECK-NEXT: 0x12014 R_386_IRELATIVE 16 // CHECK-NEXT: 0x12018 R_386_IRELATIVE 17 18 // Check that IRELATIVE .got.plt entries point to ifunc resolver and not 19 // back to the plt entry + 6. 20 // GOTPLT: Contents of section .got.plt: 21 // GOTPLT: 12000 00300100 00000000 00000000 36100100 22 // GOTPLT-NEXT: 12010 46100100 00100100 01100100 23 24 // Check that the PLTRELSZ tag includes the IRELATIVE relocations 25 // CHECK: DynamicSection [ 26 // CHECK: 0x00000002 PLTRELSZ 32 (bytes) 27 28 // Check that a PLT header is written and the ifunc entries appear last 29 // DISASM: Disassembly of section .text: 30 // DISASM-NEXT: foo: 31 // DISASM-NEXT: 11000: c3 retl 32 // DISASM: bar: 33 // DISASM-NEXT: 11001: c3 retl 34 // DISASM: _start: 35 // DISASM-NEXT: 11002: e8 49 00 00 00 calll 73 36 // DISASM-NEXT: 11007: e8 54 00 00 00 calll 84 37 // DISASM-NEXT: 1100c: e8 1f 00 00 00 calll 31 38 // DISASM-NEXT: 11011: e8 2a 00 00 00 calll 42 39 // DISASM-NEXT: Disassembly of section .plt: 40 // DISASM-NEXT: .plt: 41 // DISASM-NEXT: 11020: ff 35 04 20 01 00 pushl 73732 42 // DISASM-NEXT: 11026: ff 25 08 20 01 00 jmpl *73736 43 // DISASM-NEXT: 1102c: 90 nop 44 // DISASM-NEXT: 1102d: 90 nop 45 // DISASM-NEXT: 1102e: 90 nop 46 // DISASM-NEXT: 1102f: 90 nop 47 // DISASM-NEXT: 11030: ff 25 0c 20 01 00 jmpl *73740 48 // DISASM-NEXT: 11036: 68 00 00 00 00 pushl $0 49 // DISASM-NEXT: 1103b: e9 e0 ff ff ff jmp -32 <.plt> 50 // DISASM-NEXT: 11040: ff 25 10 20 01 00 jmpl *73744 51 // DISASM-NEXT: 11046: 68 08 00 00 00 pushl $8 52 // DISASM-NEXT: 1104b: e9 d0 ff ff ff jmp -48 <.plt> 53 // DISASM-NEXT: 11050: ff 25 14 20 01 00 jmpl *73748 54 // DISASM-NEXT: 11056: 68 30 00 00 00 pushl $48 55 // DISASM-NEXT: 1105b: e9 e0 ff ff ff jmp -32 <.plt+0x20> 56 // DISASM-NEXT: 11060: ff 25 18 20 01 00 jmpl *73752 57 // DISASM-NEXT: 11066: 68 38 00 00 00 pushl $56 58 // DISASM-NEXT: 1106b: e9 d0 ff ff ff jmp -48 <.plt+0x20> 59 60 .text 61 .type foo STT_GNU_IFUNC 62 .globl foo 63 foo: 64 ret 65 66 .type bar STT_GNU_IFUNC 67 .globl bar 68 bar: 69 ret 70 71 .globl _start 72 _start: 73 call foo 74 call bar 75 call bar2 76 call zed2