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a474cf9c4d
glibc's PowerPC /usr/include/asm/sigcontext.h, has this: #ifdef __powerpc64__ #include <asm/elf.h> #endif and that contains defines of all of the relocation symbols, like this: #define R_PPC_NONE 0 and if that file is included prior to including include/llvm/Support/ELFRelocs/PowerPC*.def, which we cannot in general prevent, the result will fail. As it turns out, this happens when compiling lld/unittests/DriverTests/GnuLdDriverTest.cpp under PPC64/Linux, because: lld/include/lld/ReaderWriter/ELFLinkingContext.h includes lld/unittests/DriverTests/DriverTest.h which includes utils/unittest/googletest/include/gtest/gtest.h which includes utils/unittest/googletest/include/gtest/internal/gtest-internal.h which includes /usr/include/sys/wait.h which includes /usr/include/signal.h which includes /usr/include/bits/sigcontext.h which includes /usr/include/asm/sigcontext.h which includes /usr/include/asm/elf.h the test could be fixed to include ReaderWriter/ELFLinkingContext.h before including unittests/DriverTests/DriverTest.h, but dealing with this in the *.def files is a more-general solution that localizes the fix to the headers instead of requiring changes to an unbounded number of other source files (both in-tree and external). llvm-svn: 248957
124 lines
4.0 KiB
Modula-2
124 lines
4.0 KiB
Modula-2
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#ifndef ELF_RELOC
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#error "ELF_RELOC must be defined"
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#endif
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// glibc's PowerPC asm/sigcontext.h, when compiling for PPC64, has the
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// unfortunate behavior of including asm/elf.h, which defines R_PPC_NONE, etc.
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// to their corresponding integer values. As a result, we need to undef them
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// here before continuing.
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#undef R_PPC_NONE
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#undef R_PPC_ADDR32
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#undef R_PPC_ADDR24
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#undef R_PPC_ADDR16
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#undef R_PPC_ADDR16_LO
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#undef R_PPC_ADDR16_HI
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#undef R_PPC_ADDR16_HA
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#undef R_PPC_ADDR14
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#undef R_PPC_ADDR14_BRTAKEN
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#undef R_PPC_ADDR14_BRNTAKEN
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#undef R_PPC_REL24
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#undef R_PPC_REL14
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#undef R_PPC_REL14_BRTAKEN
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#undef R_PPC_REL14_BRNTAKEN
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#undef R_PPC_GOT16
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#undef R_PPC_GOT16_LO
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#undef R_PPC_GOT16_HI
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#undef R_PPC_GOT16_HA
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#undef R_PPC_PLTREL24
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#undef R_PPC_JMP_SLOT
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#undef R_PPC_LOCAL24PC
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#undef R_PPC_REL32
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#undef R_PPC_TLS
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#undef R_PPC_DTPMOD32
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#undef R_PPC_TPREL16
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#undef R_PPC_TPREL16_LO
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#undef R_PPC_TPREL16_HI
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#undef R_PPC_TPREL16_HA
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#undef R_PPC_TPREL32
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#undef R_PPC_DTPREL16
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#undef R_PPC_DTPREL16_LO
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#undef R_PPC_DTPREL16_HI
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#undef R_PPC_DTPREL16_HA
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#undef R_PPC_DTPREL32
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#undef R_PPC_GOT_TLSGD16
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#undef R_PPC_GOT_TLSGD16_LO
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#undef R_PPC_GOT_TLSGD16_HI
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#undef R_PPC_GOT_TLSGD16_HA
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#undef R_PPC_GOT_TLSLD16
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#undef R_PPC_GOT_TLSLD16_LO
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#undef R_PPC_GOT_TLSLD16_HI
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#undef R_PPC_GOT_TLSLD16_HA
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#undef R_PPC_GOT_TPREL16
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#undef R_PPC_GOT_TPREL16_LO
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#undef R_PPC_GOT_TPREL16_HI
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#undef R_PPC_GOT_TPREL16_HA
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#undef R_PPC_GOT_DTPREL16
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#undef R_PPC_GOT_DTPREL16_LO
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#undef R_PPC_GOT_DTPREL16_HI
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#undef R_PPC_GOT_DTPREL16_HA
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#undef R_PPC_TLSGD
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#undef R_PPC_TLSLD
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#undef R_PPC_REL16
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#undef R_PPC_REL16_LO
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#undef R_PPC_REL16_HI
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#undef R_PPC_REL16_HA
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ELF_RELOC(R_PPC_NONE, 0) /* No relocation. */
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ELF_RELOC(R_PPC_ADDR32, 1)
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ELF_RELOC(R_PPC_ADDR24, 2)
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ELF_RELOC(R_PPC_ADDR16, 3)
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ELF_RELOC(R_PPC_ADDR16_LO, 4)
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ELF_RELOC(R_PPC_ADDR16_HI, 5)
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ELF_RELOC(R_PPC_ADDR16_HA, 6)
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ELF_RELOC(R_PPC_ADDR14, 7)
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ELF_RELOC(R_PPC_ADDR14_BRTAKEN, 8)
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ELF_RELOC(R_PPC_ADDR14_BRNTAKEN, 9)
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ELF_RELOC(R_PPC_REL24, 10)
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ELF_RELOC(R_PPC_REL14, 11)
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ELF_RELOC(R_PPC_REL14_BRTAKEN, 12)
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ELF_RELOC(R_PPC_REL14_BRNTAKEN, 13)
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ELF_RELOC(R_PPC_GOT16, 14)
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ELF_RELOC(R_PPC_GOT16_LO, 15)
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ELF_RELOC(R_PPC_GOT16_HI, 16)
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ELF_RELOC(R_PPC_GOT16_HA, 17)
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ELF_RELOC(R_PPC_PLTREL24, 18)
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ELF_RELOC(R_PPC_JMP_SLOT, 21)
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ELF_RELOC(R_PPC_LOCAL24PC, 23)
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ELF_RELOC(R_PPC_REL32, 26)
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ELF_RELOC(R_PPC_TLS, 67)
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ELF_RELOC(R_PPC_DTPMOD32, 68)
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ELF_RELOC(R_PPC_TPREL16, 69)
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ELF_RELOC(R_PPC_TPREL16_LO, 70)
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ELF_RELOC(R_PPC_TPREL16_HI, 71)
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ELF_RELOC(R_PPC_TPREL16_HA, 72)
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ELF_RELOC(R_PPC_TPREL32, 73)
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ELF_RELOC(R_PPC_DTPREL16, 74)
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ELF_RELOC(R_PPC_DTPREL16_LO, 75)
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ELF_RELOC(R_PPC_DTPREL16_HI, 76)
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ELF_RELOC(R_PPC_DTPREL16_HA, 77)
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ELF_RELOC(R_PPC_DTPREL32, 78)
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ELF_RELOC(R_PPC_GOT_TLSGD16, 79)
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ELF_RELOC(R_PPC_GOT_TLSGD16_LO, 80)
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ELF_RELOC(R_PPC_GOT_TLSGD16_HI, 81)
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ELF_RELOC(R_PPC_GOT_TLSGD16_HA, 82)
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ELF_RELOC(R_PPC_GOT_TLSLD16, 83)
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ELF_RELOC(R_PPC_GOT_TLSLD16_LO, 84)
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ELF_RELOC(R_PPC_GOT_TLSLD16_HI, 85)
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ELF_RELOC(R_PPC_GOT_TLSLD16_HA, 86)
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ELF_RELOC(R_PPC_GOT_TPREL16, 87)
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ELF_RELOC(R_PPC_GOT_TPREL16_LO, 88)
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ELF_RELOC(R_PPC_GOT_TPREL16_HI, 89)
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ELF_RELOC(R_PPC_GOT_TPREL16_HA, 90)
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ELF_RELOC(R_PPC_GOT_DTPREL16, 91)
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ELF_RELOC(R_PPC_GOT_DTPREL16_LO, 92)
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ELF_RELOC(R_PPC_GOT_DTPREL16_HI, 93)
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ELF_RELOC(R_PPC_GOT_DTPREL16_HA, 94)
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ELF_RELOC(R_PPC_TLSGD, 95)
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ELF_RELOC(R_PPC_TLSLD, 96)
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ELF_RELOC(R_PPC_REL16, 249)
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ELF_RELOC(R_PPC_REL16_LO, 250)
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ELF_RELOC(R_PPC_REL16_HI, 251)
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ELF_RELOC(R_PPC_REL16_HA, 252)
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