| commit | a169f35890152e8a31ef9bdc0d28a2e0a62e866e | |
| author | Jim Wilson <jimw@sifive.com> | |
| Fri, 30 Aug 2019 23:32:52 +0000 (30 23:32 +0000) | ||
| committer | Jim Wilson <wilson@gcc.gnu.org> | |
| Fri, 30 Aug 2019 23:32:52 +0000 (30 16:32 -0700) | ||
| tree | 65cc8352d4cfbbf79ce8d3e14f69b6f8196876f7 | treesnapshot (tar.gz zip) |
| parent | 4a140826453da37a134d792e0224f4e37343e68a | commitdiff |
RISC-V: Disable -msave-restore for shared libraries.
This was noticed while trying to test -msave-restore support. The
save/restore routines use the alternate return register t0/x5 which is
clobbered by the PLT header, so we can't use them in shared libraries.
This patch disables -msave-restore when -fpic (and -mplt), and emits a
warning if the user explicitly turned on -msave-restore.
gcc/
* config/riscv/riscv.c (riscv_option_override): If -msave-restore
and -fpic and -mplt then disable -msave-restore and warn.
From-SVN: r275231
This was noticed while trying to test -msave-restore support. The
save/restore routines use the alternate return register t0/x5 which is
clobbered by the PLT header, so we can't use them in shared libraries.
This patch disables -msave-restore when -fpic (and -mplt), and emits a
warning if the user explicitly turned on -msave-restore.
gcc/
* config/riscv/riscv.c (riscv_option_override): If -msave-restore
and -fpic and -mplt then disable -msave-restore and warn.
From-SVN: r275231
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