mirror of https://gitee.com/openkylin/linux.git
081c11a5d0
The current DWARF info for CR are incorrect, causing the gcc unwinder to
go to lunch if we take a segfault in the vdso. This fixes it.
Problem identified by Andrew Haley, and fix provided by Jakub Jelinek
(thanks !).
Unfortunately, a bug in gcc cause it to not quite work either, but that
is being fixed separately with something around the lines of:
linux-unwind.h:
fs->regs.reg[R_CR2].loc.offset = (long) ®s->ccr - new_cfa;
+ /* CR? regs are just 32-bit and PPC is big-endian. */
+ fs->regs.reg[R_CR2].loc.offset += sizeof (long) - 4;
(According to Jakub)
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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| .. | ||
| .gitignore | ||
| Makefile | ||
| cacheflush.S | ||
| datapage.S | ||
| gettimeofday.S | ||
| note.S | ||
| sigtramp.S | ||
| vdso64.lds.S | ||
| vdso64_wrapper.S | ||