09b3e3685f
Some MIPS relocations including `R_MIPS_HI16/R_MIPS_LO16` use combined addends. Such addend is calculated using addends of both paired relocations. Each `R_MIPS_HI16` relocation is paired with the next `R_MIPS_LO16` relocation. ABI requires to compute such combined addend in case of REL relocation record format only. For details see p. 4-17 at ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/mipsabi.pdf This patch implements lookup of the next paired relocation suing new `InputSectionBase::findPairedRelocLocation` method. The primary disadvantage of this approach is that we put MIPS specific logic into the common code. The next disadvantage is that we lookup `R_MIPS_LO16` for each `R_MIPS_HI16` relocation, while in fact multiple `R_MIPS_HI16` might be paired with the single `R_MIPS_LO16`. From the other side this way allows us to keep `MipsTargetInfo` class stateless and implement later relocation handling in parallel. This patch does not support `R_MIPS_HI16/R_MIPS_LO16` relocations against `_gp_disp` symbol. In that case the relocations use a special formula for the calculation. That will be implemented later. Differential Revision: http://reviews.llvm.org/D15112 llvm-svn: 254461 |
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| clang | ||
| clang-tools-extra | ||
| compiler-rt | ||
| debuginfo-tests | ||
| libclc | ||
| libcxx | ||
| libcxxabi | ||
| libunwind | ||
| lld | ||
| lldb | ||
| llgo | ||
| llvm | ||
| openmp | ||
| polly | ||