On 27 January 2016 at 18:49, Jim Wilson <jim.wil...@linaro.org> wrote: > On Wed, Jan 27, 2016 at 9:30 AM, Richard Earnshaw > <richard.earns...@arm.com> wrote: >> Long calls would probably solve the problem, but would likely be >> horribly expensive in performance. > > An allyesconfig is presumably only to verify that you haven't > accidentally broken any build config with a patch, so performance > should not be a concern. > >> The best solution would be to have an option to prevent ld -r from >> merging like-named sections (instead just aggregating multiple sections >> with similar names into one object file). This is possible in ELF. > > Another way to do this is to make an archive file instead of using ld > -r, and then use --whole-archive <archivefile> --no-whole-archive. > That would avoid the need for linker changes. > > While it might be possible to make an ELF file with multiple sections > with the same name, that would likely confuse lots of tools, and > require cascading changes, which could get ugly. > > Jim
I've just tried with-ffunction-sections, but I got: drivers/built-in.o:(.text.fixup+0x264): relocation truncated to fit: R_ARM_JUMP24 against `.text.armada_gem_pwrite_ioctl' drivers/built-in.o:(.text.fixup+0x270): relocation truncated to fit: R_ARM_JUMP24 against `.text.armada_gem_pwrite_ioctl' drivers/built-in.o:(.text.fixup+0x278): relocation truncated to fit: R_ARM_JUMP24 against `.text.scsi_ioctl' drivers/built-in.o:(.text.fixup+0x280): relocation truncated to fit: R_ARM_JUMP24 against `.text.scsi_ioctl' drivers/built-in.o:(.text.fixup+0x288): relocation truncated to fit: R_ARM_JUMP24 against `.text.sg_ioctl' drivers/built-in.o:(.text.fixup+0x290): relocation truncated to fit: R_ARM_JUMP24 against `.text.sg_ioctl' drivers/built-in.o:(.text.fixup+0x298): relocation truncated to fit: R_ARM_JUMP24 against `.text.sg_ioctl' drivers/built-in.o:(.text.fixup+0x2a0): relocation truncated to fit: R_ARM_JUMP24 against `.text.sg_ioctl' drivers/built-in.o:(.text.fixup+0x2a8): relocation truncated to fit: R_ARM_JUMP24 against `.text.sg_ioctl' drivers/built-in.o:(.text.fixup+0x2b0): relocation truncated to fit: R_ARM_JUMP24 against `.text.sg_ioctl' drivers/built-in.o:(.text.fixup+0x2b8): additional relocation overflows omitted from the output Now, with -mlong-calls, I got: drivers/built-in.o: In function `atom_op_mul': sunxi_sid.c:(.text+0xa2c334): relocation truncated to fit: R_ARM_CALL against symbol `__gnu_mcount_nc' defined in .text section in arch/arm/kernel/built-in.o drivers/built-in.o: In function `atom_op_move': sunxi_sid.c:(.text+0xa2c4d4): relocation truncated to fit: R_ARM_CALL against symbol `__gnu_mcount_nc' defined in .text section in arch/arm/kernel/built-in.o drivers/built-in.o: In function `atom_op_mask': sunxi_sid.c:(.text+0xa2c830): relocation truncated to fit: R_ARM_CALL against symbol `__gnu_mcount_nc' defined in .text section in arch/arm/kernel/built-in.o drivers/built-in.o: In function `atom_op_div': sunxi_sid.c:(.text+0xa2cb1c): relocation truncated to fit: R_ARM_CALL against symbol `__gnu_mcount_nc' defined in .text section in arch/arm/kernel/built-in.o drivers/built-in.o: In function `atom_op_compare': sunxi_sid.c:(.text+0xa2cd10): relocation truncated to fit: R_ARM_CALL against symbol `__gnu_mcount_nc' defined in .text section in arch/arm/kernel/built-in.o drivers/built-in.o: In function `atom_op_and': sunxi_sid.c:(.text+0xa2cfa0): relocation truncated to fit: R_ARM_CALL against symbol `__gnu_mcount_nc' defined in .text section in arch/arm/kernel/built-in.o drivers/built-in.o: In function `atom_op_add': sunxi_sid.c:(.text+0xa2d1e0): relocation truncated to fit: R_ARM_CALL against symbol `__gnu_mcount_nc' defined in .text section in arch/arm/kernel/built-in.o drivers/built-in.o: In function `atom_op_delay': sunxi_sid.c:(.text+0xa2d41c): relocation truncated to fit: R_ARM_CALL against symbol `__gnu_mcount_nc' defined in .text section in arch/arm/kernel/built-in.o drivers/built-in.o: In function `atom_op_jump': sunxi_sid.c:(.text+0xa2d624): relocation truncated to fit: R_ARM_CALL against symbol `__gnu_mcount_nc' defined in .text section in arch/arm/kernel/built-in.o drivers/built-in.o: In function `amdgpu_atom_execute_table_locked': sunxi_sid.c:(.text+0xa2da2c): relocation truncated to fit: R_ARM_CALL against symbol `__gnu_mcount_nc' defined in .text section in arch/arm/kernel/built-in.o Which is surprising. But maybe I didn't add -mlong-calls where I should have and some files were compiled without it, or there are asm fragments using direct calls? So... it looks like there is no straight forward route. Christophe. _______________________________________________ linaro-toolchain mailing list linaro-toolchain@lists.linaro.org https://lists.linaro.org/mailman/listinfo/linaro-toolchain
