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[ELF2/AArch64] Support R_AARCH64_LDST64_ABS_LO12_NC relocation. 

llvm-svn: 252415
This commit is contained in:
Davide Italiano 2015-11-08 04:45:26 +00:00
parent 189d7da1f5
commit bbcc7f6115
2 changed files with 17 additions and 0 deletions
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4
lld/ELF/Target.cpp
View File

@ -660,6 +660,10 @@ void AArch64TargetInfo::relocateOne(uint8_t *Loc, uint8_t *BufEnd,
updateAArch64Adr(Loc, (X >> 12) & 0x1FFFFF); // X[32:12]
break;
}
case R_AARCH64_LDST64_ABS_LO12_NC:
// No overflow check needed.
or32le(Loc, (SA & 0xFF8) << 7);
break;
case R_AARCH64_PREL16:
if (!isInt<16>(SA))
error("Relocation R_AARCH64_PREL16 out of range");

13
lld/test/elf2/aarch64-relocs.s
View File

@ -44,3 +44,16 @@ mystr:
# CHECK: Disassembly of section .R_AARCH64_ADD_ABS_LO12_NC:
# CHECK-NEXT: $x.4:
# CHECK-NEXT: 1101b: 00 7c 00 91 add x0, x0, #31
.section .R_AARCH64_LDST64_ABS_LO12_NC,"ax",@progbits
ldr x28, [x27, :lo12:foo]
foo:
.asciz "foo"
.size mystr, 3
# S = 0x11024, A = 0x4
# R = ((S + A) & 0xFFF) << 7 = 0x00001400
# 0x00001400 | 0xf940177c = 0xf940177c
# CHECK: Disassembly of section .R_AARCH64_LDST64_ABS_LO12_NC:
# CHECK-NEXT: $x.6:
# CHECK-NEXT: 11024: 7c 17 40 f9 ldr x28, [x27, #40]