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01b026b023
Some targets (ie. Mips) have additional rules for ordering the relocation table entries. Allow them to override generic sortRelocs(), which sorts entries by Offset. Then override this function for Mips, to emit HI16 and GOT16 relocations against the local symbol in pair with the corresponding LO16 relocation. Patch by Vladimir Stefanovic. Differential Revision: http://reviews.llvm.org/D7414 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234883 91177308-0d34-0410-b5e6-96231b3b80d8
126 lines
3.5 KiB
ArmAsm
126 lines
3.5 KiB
ArmAsm
# RUN: llvm-mc -filetype=obj -arch mipsel %s | llvm-readobj -r | FileCheck %s
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# Test the order of records in the relocation table.
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# *HI16 and local *GOT16 relocations should be immediately followed by the
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# corresponding *LO16 relocation against the same symbol.
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#
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# We try to implement the same semantics as gas, ie. to order the relocation
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# table the same way as gas.
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#
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# gnu as command line:
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# mips-linux-gnu-as -EL sort-relocation-table.s -o sort-relocation-table.o
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#
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# TODO: Add mips16 and micromips tests.
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# Note: offsets are part of expected output, so it's simpler to add new test
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# cases at the bottom of the file.
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# CHECK: Relocations [
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# CHECK-NEXT: {
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# Put HI before LO.
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addiu $2,$2,%lo(sym1)
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lui $2,%hi(sym1)
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# CHECK-NEXT: 0x4 R_MIPS_HI16 sym1
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# CHECK-NEXT: 0x0 R_MIPS_LO16 sym1
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# When searching for a matching LO, ignore LOs against a different symbol.
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addiu $2,$2,%lo(sym2)
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lui $2,%hi(sym2)
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addiu $2,$2,%lo(sym2_d)
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# CHECK-NEXT: 0xC R_MIPS_HI16 sym2
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# CHECK-NEXT: 0x8 R_MIPS_LO16 sym2
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# CHECK-NEXT: 0x10 R_MIPS_LO16 sym2_d
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# Match HI with 2nd LO because it has higher offset (than the 1st LO).
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addiu $2,$2,%lo(sym3)
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addiu $2,$2,%lo(sym3)
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lui $2,%hi(sym3)
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# CHECK-NEXT: 0x14 R_MIPS_LO16 sym3
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# CHECK-NEXT: 0x1C R_MIPS_HI16 sym3
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# CHECK-NEXT: 0x18 R_MIPS_LO16 sym3
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# HI is already followed by a matching LO, so don't look further, ie. ignore the
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# "free" LO with higher offset.
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lui $2,%hi(sym4)
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addiu $2,$2,%lo(sym4)
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addiu $2,$2,%lo(sym4)
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# CHECK-NEXT: 0x20 R_MIPS_HI16 sym4
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# CHECK-NEXT: 0x24 R_MIPS_LO16 sym4
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# CHECK-NEXT: 0x28 R_MIPS_LO16 sym4
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# Match 2nd HI with 2nd LO, since it's the one with highest offset among the
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# "free" ones.
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addiu $2,$2,%lo(sym5)
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addiu $2,$2,%lo(sym5)
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lui $2,%hi(sym5)
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addiu $2,$2,%lo(sym5)
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lui $2,%hi(sym5)
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# CHECK-NEXT: 0x2C R_MIPS_LO16 sym5
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# CHECK-NEXT: 0x3C R_MIPS_HI16 sym5
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# CHECK-NEXT: 0x30 R_MIPS_LO16 sym5
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# CHECK-NEXT: 0x34 R_MIPS_HI16 sym5
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# CHECK-NEXT: 0x38 R_MIPS_LO16 sym5
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# When more HIs are matched with one LO, sort them in descending order of
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# offset.
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addiu $2,$2,%lo(sym6)
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lui $2,%hi(sym6)
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lui $2,%hi(sym6)
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# CHECK-NEXT: 0x48 R_MIPS_HI16 sym6
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# CHECK-NEXT: 0x44 R_MIPS_HI16 sym6
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# CHECK-NEXT: 0x40 R_MIPS_LO16 sym6
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# sym7 is a local symbol, so GOT relocation against it needs a matching LO.
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sym7:
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addiu $2,$2,%lo(sym7)
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lui $2,%got(sym7)
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# CHECK-NEXT: 0x50 R_MIPS_GOT16 sym7
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# CHECK-NEXT: 0x4C R_MIPS_LO16 sym7
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# sym8 is not a local symbol, don't look for a matching LO for GOT.
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.global sym8
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addiu $2,$2,%lo(sym8)
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lui $2,%got(sym8)
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# CHECK-NEXT: 0x54 R_MIPS_LO16 sym8
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# CHECK-NEXT: 0x58 R_MIPS_GOT16 sym8
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# A small combination of previous checks.
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symc1:
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addiu $2,$2,%lo(symc1)
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addiu $2,$2,%lo(symc1)
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addiu $2,$2,%lo(symc1)
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lui $2,%hi(symc1)
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lui $2,%got(symc1)
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addiu $2,$2,%lo(symc2)
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lui $2,%hi(symc1)
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lui $2,%hi(symc1)
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lui $2,%got(symc2)
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lui $2,%hi(symc1)
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addiu $2,$2,%lo(symc1)
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addiu $2,$2,%lo(symc2)
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lui $2,%hi(symc1)
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lui $2,%hi(symc1)
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# CHECK-NEXT: 0x78 R_MIPS_HI16 symc1
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# CHECK-NEXT: 0x74 R_MIPS_HI16 symc1
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# CHECK-NEXT: 0x6C R_MIPS_GOT16 symc1
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# CHECK-NEXT: 0x68 R_MIPS_HI16 symc1
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# CHECK-NEXT: 0x5C R_MIPS_LO16 symc1
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# CHECK-NEXT: 0x8C R_MIPS_HI16 symc1
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# CHECK-NEXT: 0x60 R_MIPS_LO16 symc1
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# CHECK-NEXT: 0x90 R_MIPS_HI16 symc1
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# CHECK-NEXT: 0x64 R_MIPS_LO16 symc1
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# CHECK-NEXT: 0x70 R_MIPS_LO16 symc2
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# CHECK-NEXT: 0x7C R_MIPS_GOT16 symc2
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# CHECK-NEXT: 0x80 R_MIPS_HI16 symc1
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# CHECK-NEXT: 0x84 R_MIPS_LO16 symc1
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# CHECK-NEXT: 0x88 R_MIPS_LO16 symc2
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