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author | Vladimir Stefanovic <vladimir.stefanovic@rt-rk.com> | 2018-11-21 16:38:34 +0000 |
---|---|---|
committer | Vladimir Stefanovic <vladimir.stefanovic@rt-rk.com> | 2018-11-21 16:38:34 +0000 |
commit | 64ad1cf24b2747093d06c8041d3f63ec80438dad (patch) | |
tree | c72959d7112b3536095e3ed93246e38f5c9902ec | |
parent | 1d2714be13e05d0a134f5936345332ad504e7378 (diff) | |
download | bcm5719-llvm-64ad1cf24b2747093d06c8041d3f63ec80438dad.tar.gz bcm5719-llvm-64ad1cf24b2747093d06c8041d3f63ec80438dad.zip |
[mips][mc] Add basic support for R_MIPS_JALR/R_MICROMIPS_JALR
R_MIPS_JALR/R_MICROMIPS_JALR can now be parsed in .s files and emitted to .o.
They are still not generated with JALR.
Differential revision: https://reviews.llvm.org/D54721
llvm-svn: 347398
-rw-r--r-- | llvm/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.cpp | 12 | ||||
-rw-r--r-- | llvm/lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp | 4 | ||||
-rw-r--r-- | llvm/lib/Target/Mips/MCTargetDesc/MipsFixupKinds.h | 4 | ||||
-rw-r--r-- | llvm/test/MC/Mips/reloc-directive.s | 13 |
4 files changed, 31 insertions, 2 deletions
diff --git a/llvm/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.cpp b/llvm/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.cpp index 63f9151da6b..265d1141cb0 100644 --- a/llvm/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.cpp +++ b/llvm/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.cpp @@ -339,6 +339,8 @@ Optional<MCFixupKind> MipsAsmBackend::getFixupKind(StringRef Name) const { (MCFixupKind)Mips::fixup_MICROMIPS_TLS_TPREL_HI16) .Case("R_MICROMIPS_TLS_TPREL_LO16", (MCFixupKind)Mips::fixup_MICROMIPS_TLS_TPREL_LO16) + .Case("R_MIPS_JALR", (MCFixupKind)Mips::fixup_Mips_JALR) + .Case("R_MICROMIPS_JALR", (MCFixupKind)Mips::fixup_MICROMIPS_JALR) .Default(MCAsmBackend::getFixupKind(Name)); } @@ -417,7 +419,9 @@ getFixupKindInfo(MCFixupKind Kind) const { { "fixup_MICROMIPS_TLS_TPREL_HI16", 0, 16, 0 }, { "fixup_MICROMIPS_TLS_TPREL_LO16", 0, 16, 0 }, { "fixup_Mips_SUB", 0, 64, 0 }, - { "fixup_MICROMIPS_SUB", 0, 64, 0 } + { "fixup_MICROMIPS_SUB", 0, 64, 0 }, + { "fixup_Mips_JALR", 0, 32, 0 }, + { "fixup_MICROMIPS_JALR", 0, 32, 0 } }; static_assert(array_lengthof(LittleEndianInfos) == Mips::NumTargetFixupKinds, "Not all MIPS little endian fixup kinds added!"); @@ -495,7 +499,9 @@ getFixupKindInfo(MCFixupKind Kind) const { { "fixup_MICROMIPS_TLS_TPREL_HI16", 16, 16, 0 }, { "fixup_MICROMIPS_TLS_TPREL_LO16", 16, 16, 0 }, { "fixup_Mips_SUB", 0, 64, 0 }, - { "fixup_MICROMIPS_SUB", 0, 64, 0 } + { "fixup_MICROMIPS_SUB", 0, 64, 0 }, + { "fixup_Mips_JALR", 0, 32, 0 }, + { "fixup_MICROMIPS_JALR", 0, 32, 0 } }; static_assert(array_lengthof(BigEndianInfos) == Mips::NumTargetFixupKinds, "Not all MIPS big endian fixup kinds added!"); @@ -553,6 +559,7 @@ bool MipsAsmBackend::shouldForceRelocation(const MCAssembler &Asm, case Mips::fixup_Mips_TLSLDM: case Mips::fixup_Mips_TPREL_HI: case Mips::fixup_Mips_TPREL_LO: + case Mips::fixup_Mips_JALR: case Mips::fixup_MICROMIPS_CALL16: case Mips::fixup_MICROMIPS_GOT_DISP: case Mips::fixup_MICROMIPS_GOT_PAGE: @@ -565,6 +572,7 @@ bool MipsAsmBackend::shouldForceRelocation(const MCAssembler &Asm, case Mips::fixup_MICROMIPS_TLS_LDM: case Mips::fixup_MICROMIPS_TLS_TPREL_HI16: case Mips::fixup_MICROMIPS_TLS_TPREL_LO16: + case Mips::fixup_MICROMIPS_JALR: return true; } } diff --git a/llvm/lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp b/llvm/lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp index c600382446a..0e8de0577a8 100644 --- a/llvm/lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp +++ b/llvm/lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp @@ -401,6 +401,10 @@ unsigned MipsELFObjectWriter::getRelocType(MCContext &Ctx, return ELF::R_MICROMIPS_HIGHER; case Mips::fixup_MICROMIPS_HIGHEST: return ELF::R_MICROMIPS_HIGHEST; + case Mips::fixup_Mips_JALR: + return ELF::R_MIPS_JALR; + case Mips::fixup_MICROMIPS_JALR: + return ELF::R_MICROMIPS_JALR; } llvm_unreachable("invalid fixup kind!"); diff --git a/llvm/lib/Target/Mips/MCTargetDesc/MipsFixupKinds.h b/llvm/lib/Target/Mips/MCTargetDesc/MipsFixupKinds.h index d7f6cf91db7..eedad16dddc 100644 --- a/llvm/lib/Target/Mips/MCTargetDesc/MipsFixupKinds.h +++ b/llvm/lib/Target/Mips/MCTargetDesc/MipsFixupKinds.h @@ -222,6 +222,10 @@ namespace Mips { fixup_Mips_SUB, fixup_MICROMIPS_SUB, + // resulting in - R_MIPS_JALR/R_MICROMIPS_JALR + fixup_Mips_JALR, + fixup_MICROMIPS_JALR, + // Marker LastTargetFixupKind, NumTargetFixupKinds = LastTargetFixupKind - FirstTargetFixupKind diff --git a/llvm/test/MC/Mips/reloc-directive.s b/llvm/test/MC/Mips/reloc-directive.s index be5d6934c25..bf7c91b851f 100644 --- a/llvm/test/MC/Mips/reloc-directive.s +++ b/llvm/test/MC/Mips/reloc-directive.s @@ -79,6 +79,10 @@ foo: nop .reloc 124, R_MICROMIPS_TLS_TPREL_LO16, 4 # ASM: .reloc 124, R_MICROMIPS_TLS_TPREL_LO16, 4 nop + .reloc 128, R_MIPS_JALR, 4 # ASM: .reloc 128, R_MIPS_JALR, 4 + nop + .reloc 132, R_MICROMIPS_JALR, 4 # ASM: .reloc 132, R_MICROMIPS_JALR, 4 + nop # OBJ-O32-LABEL: Name: .text # OBJ-O32: 0000: 00000000 00000000 00000008 00000000 @@ -89,6 +93,7 @@ foo: # OBJ-O32-NEXT: 0050: 00000000 00000004 00000004 00000004 # OBJ-O32-NEXT: 0060: 00000000 00000000 00000000 00000000 # OBJ-O32-NEXT: 0070: 00000000 00000000 00000000 00000000 +# OBJ-O32-NEXT: 0080: 00000000 00000000 # OBJ-O32-LABEL: } # OBJ-O32-LABEL: Relocations [ # OBJ-O32: 0x0 R_MIPS_NONE .text 0x0 @@ -121,6 +126,8 @@ foo: # OBJ-O32-NEXT: 0x74 R_MICROMIPS_TLS_LDM - 0x0 # OBJ-O32-NEXT: 0x78 R_MICROMIPS_TLS_TPREL_HI16 - 0x0 # OBJ-O32-NEXT: 0x7C R_MICROMIPS_TLS_TPREL_LO16 - 0x0 +# OBJ-O32-NEXT: 0x80 R_MIPS_JALR - 0x0 +# OBJ-O32-NEXT: 0x84 R_MICROMIPS_JALR - 0x0 # OBJ-O32-NEXT: 0x1C R_MIPS_GOT16 - 0x0 # OBJ-O32-NEXT: 0x60 R_MICROMIPS_GOT16 - 0x0 @@ -133,6 +140,7 @@ foo: # OBJ-N32-NEXT: 0050: 00000000 00000000 00000000 00000000 # OBJ-N32-NEXT: 0060: 00000000 00000000 00000000 00000000 # OBJ-N32-NEXT: 0070: 00000000 00000000 00000000 00000000 +# OBJ-N32-NEXT: 0080: 00000000 00000000 # OBJ-N32-LABEL: } # OBJ-N32-LABEL: Relocations [ @@ -168,6 +176,8 @@ foo: # OBJ-N32-NEXT: 0x74 R_MICROMIPS_TLS_LDM - 0x4 # OBJ-N32-NEXT: 0x78 R_MICROMIPS_TLS_TPREL_HI16 - 0x4 # OBJ-N32-NEXT: 0x7C R_MICROMIPS_TLS_TPREL_LO16 - 0x4 +# OBJ-N32-NEXT: 0x80 R_MIPS_JALR - 0x4 +# OBJ-N32-NEXT: 0x84 R_MICROMIPS_JALR - 0x4 # OBJ-N64-LABEL: Name: .text # OBJ-N64: 0000: 00000000 00000000 00000000 00000000 @@ -178,6 +188,7 @@ foo: # OBJ-N64-NEXT: 0050: 00000000 00000000 00000000 00000000 # OBJ-N64-NEXT: 0060: 00000000 00000000 00000000 00000000 # OBJ-N64-NEXT: 0070: 00000000 00000000 00000000 00000000 +# OBJ-N64-NEXT: 0080: 00000000 00000000 # OBJ-N64-LABEL: } # OBJ-N64-LABEL: Relocations [ # OBJ-N64: 0x4 R_MIPS_NONE/R_MIPS_NONE/R_MIPS_NONE .text 0x0 @@ -212,3 +223,5 @@ foo: # OBJ-N64-NEXT: 0x74 R_MICROMIPS_TLS_LDM/R_MIPS_NONE/R_MIPS_NONE - 0x4 # OBJ-N64-NEXT: 0x78 R_MICROMIPS_TLS_TPREL_HI16/R_MIPS_NONE/R_MIPS_NONE - 0x4 # OBJ-N64-NEXT: 0x7C R_MICROMIPS_TLS_TPREL_LO16/R_MIPS_NONE/R_MIPS_NONE - 0x4 +# OBJ-N64-NEXT: 0x80 R_MIPS_JALR/R_MIPS_NONE/R_MIPS_NONE - 0x4 +# OBJ-N64-NEXT: 0x84 R_MICROMIPS_JALR/R_MIPS_NONE/R_MIPS_NONE - 0x4 |