9e0297b8bc
In short the patch introduces support for linking object file conform MIPS N32 ABI [1]. This ABI is similar to N64 ABI but uses 32-bit pointer size. The most non-trivial requirement of this ABI is one more relocation packing format. N64 ABI puts multiple relocation type into the single relocation record. The N32 ABI uses series of successive relocations with the same offset for this purpose. In this patch, new function `mergeMipsN32RelTypes` handle this case and "convert" N32 relocation to the N64 relocation so the rest of the code keep unchanged. For now, linker does not support series of relocations applied to sections without SHF_ALLOC bit. Probably later I will add the support or insert some sort of assert into the `relocateNonAlloc` routine to catch this case. [1] ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/MIPS-N32-ABI-Handbook.pdf Differential revision: https://reviews.llvm.org/D26298 llvm-svn: 286052
88 lines
3.5 KiB
ArmAsm
88 lines
3.5 KiB
ArmAsm
# Check MIPS ELF ISA flag calculation if input files have different ISAs.
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# RUN: llvm-mc -filetype=obj -triple=mips-unknown-linux \
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# RUN: -mcpu=mips32 %S/Inputs/mips-dynamic.s -o %t1.o
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# RUN: llvm-mc -filetype=obj -triple=mips-unknown-linux \
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# RUN: -mcpu=mips32r2 %s -o %t2.o
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# RUN: ld.lld %t1.o %t2.o -o %t.exe
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# RUN: llvm-readobj -h %t.exe | FileCheck -check-prefix=R1R2 %s
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# Check that lld does not allow to link incompatible ISAs.
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# RUN: llvm-mc -filetype=obj -triple=mips-unknown-linux \
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# RUN: -mcpu=mips3 %S/Inputs/mips-dynamic.s -o %t1.o
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# RUN: llvm-mc -filetype=obj -triple=mips-unknown-linux \
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# RUN: -mcpu=mips32 -mattr=+fp64 %s -o %t2.o
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# RUN: not ld.lld %t1.o %t2.o -o %t.exe 2>&1 | FileCheck -check-prefix=R3R32 %s
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# Check that lld does not allow to link incompatible ISAs.
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# RUN: llvm-mc -filetype=obj -triple=mips64-unknown-linux \
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# RUN: -mcpu=mips64r6 %S/Inputs/mips-dynamic.s -o %t1.o
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# RUN: llvm-mc -filetype=obj -triple=mips64-unknown-linux \
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# RUN: -mcpu=octeon %s -o %t2.o
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# RUN: not ld.lld %t1.o %t2.o -o %t.exe 2>&1 \
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# RUN: | FileCheck -check-prefix=R6OCTEON %s
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# Check that lld does not allow to link incompatible floating point ABI.
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# RUN: llvm-mc -filetype=obj -triple=mips-unknown-linux \
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# RUN: -mcpu=mips32 %S/Inputs/mips-dynamic.s -o %t1.o
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# RUN: llvm-mc -filetype=obj -triple=mips-unknown-linux \
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# RUN: -mcpu=mips32 -mattr=+fp64 %s -o %t2.o
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# RUN: not ld.lld %t1.o %t2.o -o %t.exe 2>&1 | FileCheck -check-prefix=FPABI %s
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# Check that lld take in account EF_MIPS_MACH_XXX ISA flags
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# RUN: llvm-mc -filetype=obj -triple=mips64-unknown-linux \
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# RUN: -mcpu=mips64 %S/Inputs/mips-dynamic.s -o %t1.o
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# RUN: llvm-mc -filetype=obj -triple=mips64-unknown-linux \
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# RUN: -mcpu=octeon %s -o %t2.o
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# RUN: ld.lld %t1.o %t2.o -o %t.exe
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# RUN: llvm-readobj -h %t.exe | FileCheck -check-prefix=OCTEON %s
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# Check that lld does not allow to link incompatible ABIs.
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# RUN: llvm-mc -filetype=obj -triple=mips-unknown-linux \
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# RUN: -target-abi n32 %S/Inputs/mips-dynamic.s -o %t1.o
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# RUN: llvm-mc -filetype=obj -triple=mips-unknown-linux \
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# RUN: -target-abi o32 %s -o %t2.o
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# RUN: not ld.lld %t1.o %t2.o -o %t.exe 2>&1 | FileCheck -check-prefix=N32O32 %s
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# Check that lld does not allow to link modules with incompatible NAN flags.
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# RUN: llvm-mc -filetype=obj -triple=mips-unknown-linux \
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# RUN: -mattr=+nan2008 %S/Inputs/mips-dynamic.s -o %t1.o
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# RUN: llvm-mc -filetype=obj -triple=mips-unknown-linux \
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# RUN: %s -o %t2.o
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# RUN: not ld.lld %t1.o %t2.o -o %t.exe 2>&1 | FileCheck -check-prefix=NAN %s
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# REQUIRES: mips
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.option pic0
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.text
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.global __start
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__start:
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nop
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# R1R2: Flags [
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# R1R2-NEXT: EF_MIPS_ABI_O32
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# R1R2-NEXT: EF_MIPS_ARCH_32R2
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# R1R2-NEXT: EF_MIPS_CPIC
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# R1R2-NEXT: ]
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# R3R32: target ISA 'mips3' is incompatible with 'mips32': {{.*}}mips-elf-flags-err.s.tmp2.o
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# R6OCTEON: target ISA 'mips64r6' is incompatible with 'octeon': {{.*}}mips-elf-flags-err.s.tmp2.o
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# FPABI: target floating point ABI '-mdouble-float' is incompatible with '-mgp32 -mfp64': {{.*}}mips-elf-flags-err.s.tmp2.o
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# OCTEON: Flags [
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# OCTEON-NEXT: EF_MIPS_ARCH_64R2
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# OCTEON-NEXT: EF_MIPS_CPIC
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# OCTEON-NEXT: EF_MIPS_MACH_OCTEON
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# OCTEON-NEXT: EF_MIPS_PIC
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# OCTEON-NEXT: ]
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# N32O32: error: {{.*}}mips-elf-flags-err.s.tmp2.o is incompatible with {{.*}}mips-elf-flags-err.s.tmp1.o
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# NAN: target -mnan=2008 is incompatible with -mnan=legacy: {{.*}}mips-elf-flags-err.s.tmp2.o
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