a0eee6c971
Currently mentioning any symbols in immediate asm operands is not
supported, for example:
error: invalid operand for instruction
lghi %r4,foo_end-foo
The immediate problem is that is*Imm() and print*Operand() functions do
not accept MCExprs, but simply relaxing these checks is not enough:
after symbol addresses are computed, range checks need to run against
resolved values.
Add a number of SystemZ::FixupKind members for each kind of immediate
value and process them in SystemZMCAsmBackend::applyFixup(). Only
perform the range checks, do not change anything.
Adjust the tests: move previously failing cases like the one shown
above out of insn-bad.s.
Reviewed By: uweigand
Differential Revision: https://reviews.llvm.org/D154899
68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
//===-- SystemZMCFixups.h - SystemZ-specific fixup entries ------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_SYSTEMZ_MCTARGETDESC_SYSTEMZMCFIXUPS_H
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#define LLVM_LIB_TARGET_SYSTEMZ_MCTARGETDESC_SYSTEMZMCFIXUPS_H
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#include "llvm/MC/MCFixup.h"
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#include "llvm/MC/MCFixupKindInfo.h"
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namespace llvm {
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namespace SystemZ {
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enum FixupKind {
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// These correspond directly to R_390_* relocations.
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FK_390_PC12DBL = FirstTargetFixupKind,
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FK_390_PC16DBL,
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FK_390_PC24DBL,
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FK_390_PC32DBL,
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FK_390_TLS_CALL,
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FK_390_S8Imm,
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FK_390_S16Imm,
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FK_390_S20Imm,
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FK_390_S32Imm,
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FK_390_U1Imm,
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FK_390_U2Imm,
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FK_390_U3Imm,
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FK_390_U4Imm,
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FK_390_U8Imm,
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FK_390_U12Imm,
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FK_390_U16Imm,
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FK_390_U32Imm,
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FK_390_U48Imm,
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// Marker
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LastTargetFixupKind,
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NumTargetFixupKinds = LastTargetFixupKind - FirstTargetFixupKind
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};
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const static MCFixupKindInfo MCFixupKindInfos[SystemZ::NumTargetFixupKinds] = {
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{"FK_390_PC12DBL", 4, 12, MCFixupKindInfo::FKF_IsPCRel},
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{"FK_390_PC16DBL", 0, 16, MCFixupKindInfo::FKF_IsPCRel},
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{"FK_390_PC24DBL", 0, 24, MCFixupKindInfo::FKF_IsPCRel},
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{"FK_390_PC32DBL", 0, 32, MCFixupKindInfo::FKF_IsPCRel},
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{"FK_390_TLS_CALL", 0, 0, 0},
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{"FK_390_S8Imm", 0, 8, 0},
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{"FK_390_S16Imm", 0, 16, 0},
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{"FK_390_S20Imm", 4, 20, 0},
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{"FK_390_S32Imm", 0, 32, 0},
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{"FK_390_U1Imm", 0, 1, 0},
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{"FK_390_U2Imm", 0, 2, 0},
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{"FK_390_U3Imm", 0, 3, 0},
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{"FK_390_U4Imm", 0, 4, 0},
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{"FK_390_U8Imm", 0, 8, 0},
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{"FK_390_U12Imm", 4, 12, 0},
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{"FK_390_U16Imm", 0, 16, 0},
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{"FK_390_U32Imm", 0, 32, 0},
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{"FK_390_U48Imm", 0, 48, 0},
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};
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} // end namespace SystemZ
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} // end namespace llvm
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#endif
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