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789ff5b6c2
The addressable signed 32-bit range for n64 MIPS `.got.plt' references is from 0xffffffff7fff8000 to 0x7fff7fff, due to how the composition of an LUI and an LD instruction works for address calculation in the 64-bit addressing mode, such as when CP0.Status.UX=1. We currently have a range check in `mips_finish_exec_plt', however it is not correct as it verifies that the `.got.plt' start address referred is between 0xffffffff80000000 and 0x7fffffff. It is also implemented as an assertion rather than a proper error message despite that the situation can be triggered by user input. Additionally there is no check made for individual `.got.plt' entries referred even though they can be out of range while the `.got.plt' start address is not. Fix all these problems and use the correct range for the check, limiting it to n64 output files, and then issue a proper error message both in `mips_finish_exec_plt' and in `_bfd_mips_elf_finish_dynamic_symbol', suggesting the use of the `-Ttext-segment=...' option that will often work and with the default linker scripts in particular. Add suitable tests covering boundary cases. bfd/ PR ld/22966 * elfxx-mips.c (_bfd_mips_elf_finish_dynamic_symbol): Verify the `.got.plt' entry referred is in range. (mips_finish_exec_plt): Correct the range check for `.got.plt' start. Replace the assertion used for that with a proper error message. ld/ PR ld/22966 * testsuite/ld-mips-elf/n64-plt-1.dd: New test. * testsuite/ld-mips-elf/n64-plt-1.gd: New test. * testsuite/ld-mips-elf/n64-plt-2.ed: New test. * testsuite/ld-mips-elf/n64-plt-3.ed: New test. * testsuite/ld-mips-elf/n64-plt-4.dd: New test. * testsuite/ld-mips-elf/n64-plt-4.gd: New test. * testsuite/ld-mips-elf/n64-plt-1.ld: New test linker script. * testsuite/ld-mips-elf/n64-plt-2.ld: New test linker script. * testsuite/ld-mips-elf/n64-plt-3.ld: New test linker script. * testsuite/ld-mips-elf/n64-plt-4.ld: New test linker script. * testsuite/ld-mips-elf/n64-plt.s: New test source. * testsuite/ld-mips-elf/n64-plt-lib.s: New test source. * testsuite/ld-mips-elf/mips-elf.exp: Run the new tests.
19 lines
602 B
GDScript3
19 lines
602 B
GDScript3
Primary GOT:
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Canonical gp value: ffffffff80000010
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Reserved entries:
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Address Access Initial Purpose
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ffffffff7fff8020 -32752\(gp\) 0000000000000000 Lazy resolver
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ffffffff7fff8028 -32744\(gp\) 8000000000000000 Module pointer \(GNU extension\)
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PLT GOT:
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Reserved entries:
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Address Initial Purpose
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ffffffff7fff8000 0000000000000000 PLT lazy resolver
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ffffffff7fff8008 0000000000000000 Module pointer
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Entries:
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Address Initial Sym\.Val\. Type Ndx Name
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ffffffff7fff8010 ffffffff10000280 0000000000000000 FUNC UND bar
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