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| author | Stafford Horne <shorne@gmail.com> | 2021-04-06 05:47:17 +0900 |
|---|---|---|
| committer | Stafford Horne <shorne@gmail.com> | 2021-08-15 07:22:58 +0900 |
| commit | eff8110674ef193481d3657456a262beeb9951ff (patch) | |
| tree | 71adf5ce89c9c912662179f49f2167eaecfec53b /libgcc | |
| parent | 96194a07bdbc57dd9733892a791d87dbe25f0802 (diff) | |
| download | gcc-eff8110674ef193481d3657456a262beeb9951ff.zip gcc-eff8110674ef193481d3657456a262beeb9951ff.tar.gz gcc-eff8110674ef193481d3657456a262beeb9951ff.tar.bz2 | |
or1k: Add mcmodel option to handle large GOTs
When building libgeos we get an error with:
linux-uclibc/9.3.0/crtbeginS.o: in function `__do_global_dtors_aux':
crtstuff.c:(.text+0x118): relocation truncated to fit: R_OR1K_GOT16 against symbol `__cxa_finalize' defined in .text section in
/home/shorne/work/openrisc/3eb9f9d0f6d8274b2d19753c006bd83f7d536e3c/output/host/or1k-buildroot-linux-uclibc/sysroot/lib/libc.so.
This is caused by GOT code having a limit of 64k. In OpenRISC this
looks to be the only relocation code pattern to be limited to 64k.
This patch allows specifying a new option -mcmodel=large which can be
used to generate 2 more instructions to construct 32-bit addresses for
up to 4G GOTs.
gcc/ChangeLog:
PR target/99783
* config/or1k/or1k-opts.h: New file.
* config/or1k/or1k.c (or1k_legitimize_address_1, print_reloc):
Support generating gotha relocations if -mcmodel=large is
specified.
* config/or1k/or1k.h (TARGET_CMODEL_SMALL, TARGET_CMODEL_LARGE):
New macros.
* config/or1k/or1k.opt (mcmodel=): New option.
* doc/invoke.texi (OpenRISC Options): Document mcmodel.
Diffstat (limited to 'libgcc')
0 files changed, 0 insertions, 0 deletions