Files
clang-p2996/lld/test/ELF/pre_init_fini_array_missing.s
Fangrui Song 87de9a0786 [X86InstPrinter] Change printPCRelImm to print the target address in hexadecimal form
```
// llvm-objdump -d output (before)
400000: e8 0b 00 00 00   callq 11
400005: e8 0b 00 00 00   callq 11

// llvm-objdump -d output (after)
400000: e8 0b 00 00 00  callq 0x400010
400005: e8 0b 00 00 00  callq 0x400015

// GNU objdump -d. The lack of 0x is not ideal because the result cannot be re-assembled
400000: e8 0b 00 00 00  callq 400010
400005: e8 0b 00 00 00  callq 400015
```

In llvm-objdump, we pass the address of the next MCInst. Ideally we
should just thread the address of the current address, unfortunately we
cannot call X86MCCodeEmitter::encodeInstruction (X86MCCodeEmitter
requires MCInstrInfo and MCContext) to get the length of the MCInst.

MCInstPrinter::printInst has other callers (e.g llvm-mc -filetype=asm, llvm-mca) which set Address to 0.
They leave MCInstPrinter::PrintBranchImmAsAddress as false and this change is a no-op for them.

Reviewed By: jhenderson

Differential Revision: https://reviews.llvm.org/D76580
2020-03-26 08:28:59 -07:00

43 lines
1.3 KiB
ArmAsm

// REQUIRES: x86
// RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o
// RUN: ld.lld %t.o -o %t
// RUN: llvm-objdump -d --no-show-raw-insn %t | FileCheck %s
// RUN: ld.lld -pie %t.o -o %t2
// RUN: llvm-objdump -d --no-show-raw-insn %t2 | FileCheck --check-prefix=PIE %s
.globl _start
_start:
call __preinit_array_start
call __preinit_array_end
call __init_array_start
call __init_array_end
call __fini_array_start
call __fini_array_end
// With no .init_array section the symbols resolve to .text.
// 0x201120 - (0x201120 + 5) = -5
// 0x201120 - (0x201125 + 5) = -10
// ...
// CHECK: Disassembly of section .text:
// CHECK-EMPTY:
// CHECK-NEXT: <_start>:
// CHECK-NEXT: 201120: callq 0x201120
// CHECK-NEXT: callq 0x201120
// CHECK-NEXT: callq 0x201120
// CHECK-NEXT: callq 0x201120
// CHECK-NEXT: callq 0x201120
// CHECK-NEXT: callq 0x201120
// In position-independent binaries, they resolve to .text too.
// PIE: Disassembly of section .text:
// PIE-EMPTY:
// PIE-NEXT: <_start>:
// PIE-NEXT: 1210: callq 0x1210
// PIE-NEXT: callq 0x1210
// PIE-NEXT: callq 0x1210
// PIE-NEXT: callq 0x1210
// PIE-NEXT: callq 0x1210
// PIE-NEXT: callq 0x1210