diff options
Diffstat (limited to 'contrib/llvm/lib/Target/ARM/ARMAsmBackend.cpp')
| -rw-r--r-- | contrib/llvm/lib/Target/ARM/ARMAsmBackend.cpp | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/contrib/llvm/lib/Target/ARM/ARMAsmBackend.cpp b/contrib/llvm/lib/Target/ARM/ARMAsmBackend.cpp index f062819..618a2b5 100644 --- a/contrib/llvm/lib/Target/ARM/ARMAsmBackend.cpp +++ b/contrib/llvm/lib/Target/ARM/ARMAsmBackend.cpp @@ -76,7 +76,7 @@ public: { "fixup_arm_thumb_blx", 7, 21, MCFixupKindInfo::FKF_IsPCRel }, { "fixup_arm_thumb_cb", 0, 16, MCFixupKindInfo::FKF_IsPCRel }, { "fixup_arm_thumb_cp", 1, 8, MCFixupKindInfo::FKF_IsPCRel }, -{ "fixup_arm_thumb_bcc", 1, 8, MCFixupKindInfo::FKF_IsPCRel }, +{ "fixup_arm_thumb_bcc", 0, 8, MCFixupKindInfo::FKF_IsPCRel }, // movw / movt: 16-bits immediate but scattered into two chunks 0 - 12, 16 - 19. { "fixup_arm_movt_hi16", 0, 20, 0 }, { "fixup_arm_movw_lo16", 0, 20, 0 }, @@ -164,23 +164,25 @@ static unsigned adjustFixupValue(unsigned Kind, uint64_t Value) { case FK_Data_4: return Value; case ARM::fixup_arm_movt_hi16: - case ARM::fixup_arm_movt_hi16_pcrel: Value >>= 16; // Fallthrough case ARM::fixup_arm_movw_lo16: + case ARM::fixup_arm_movt_hi16_pcrel: case ARM::fixup_arm_movw_lo16_pcrel: { unsigned Hi4 = (Value & 0xF000) >> 12; unsigned Lo12 = Value & 0x0FFF; + assert ((((int64_t)Value) >= -0x8000) && (((int64_t)Value) <= 0x7fff) && + "Out of range pc-relative fixup value!"); // inst{19-16} = Hi4; // inst{11-0} = Lo12; Value = (Hi4 << 16) | (Lo12); return Value; } case ARM::fixup_t2_movt_hi16: - case ARM::fixup_t2_movt_hi16_pcrel: Value >>= 16; // Fallthrough case ARM::fixup_t2_movw_lo16: + case ARM::fixup_t2_movt_hi16_pcrel: case ARM::fixup_t2_movw_lo16_pcrel: { unsigned Hi4 = (Value & 0xF000) >> 12; unsigned i = (Value & 0x800) >> 11; @@ -190,8 +192,9 @@ static unsigned adjustFixupValue(unsigned Kind, uint64_t Value) { // inst{26} = i; // inst{14-12} = Mid3; // inst{7-0} = Lo8; + assert ((((int64_t)Value) >= -0x8000) && (((int64_t)Value) <= 0x7fff) && + "Out of range pc-relative fixup value!"); Value = (Hi4 << 16) | (i << 26) | (Mid3 << 12) | (Lo8); - uint64_t swapped = (Value & 0xFFFF0000) >> 16; swapped |= (Value & 0x0000FFFF) << 16; return swapped; @@ -305,7 +308,7 @@ static unsigned adjustFixupValue(unsigned Kind, uint64_t Value) { // // Note that the halfwords are stored high first, low second; so we need // to transpose the fixup value here to map properly. - unsigned isNeg = (int64_t(Value) < 0) ? 1 : 0; + unsigned isNeg = (int64_t(Value - 4) < 0) ? 1 : 0; uint32_t Binary = 0; Value = 0x3fffff & ((Value - 4) >> 1); Binary = (Value & 0x7ff) << 16; // Low imm11 value. @@ -323,7 +326,7 @@ static unsigned adjustFixupValue(unsigned Kind, uint64_t Value) { // // Note that the halfwords are stored high first, low second; so we need // to transpose the fixup value here to map properly. - unsigned isNeg = (int64_t(Value) < 0) ? 1 : 0; + unsigned isNeg = (int64_t(Value-4) < 0) ? 1 : 0; uint32_t Binary = 0; Value = 0xfffff & ((Value - 2) >> 2); Binary = (Value & 0x3ff) << 17; // Low imm10L value. @@ -404,7 +407,6 @@ void ELFARMAsmBackend::ApplyFixup(const MCFixup &Fixup, char *Data, if (!Value) return; // Doesn't change encoding. unsigned Offset = Fixup.getOffset(); - assert(Offset % NumBytes == 0 && "Offset mod NumBytes is nonzero!"); // For each byte of the fragment that the fixup touches, mask in the bits from // the fixup value. The Value has been "split up" into the appropriate |
