Richard Sandiford dbc3af4fc6 SVE unwinding ... This patch adds support for unwinding frames that use the SVE pseudo VG register. We want this register to act like a normal register if the CFI explicitly sets it, but want to provide a default value otherwise. Computing the default value requires an SVE target, so we only want to compute it on demand. aarch64_vg uses a hard-coded .inst in order to avoid a build dependency on binutils 2.28 or later. 2018-01-13 Richard Sandiford <richard.sandiford@linaro.org> gcc/ * doc/tm.texi.in (DWARF_LAZY_REGISTER_VALUE): Document. * doc/tm.texi: Regenerate. libgcc/ * config/aarch64/value-unwind.h (aarch64_vg): New function. (DWARF_LAZY_REGISTER_VALUE): Define. * unwind-dw2.c (_Unwind_GetGR): Use DWARF_LAZY_REGISTER_VALUE to provide a fallback register value. gcc/testsuite/ * g++.target/aarch64/sve/aarch64-sve.exp: New harness. * g++.target/aarch64/sve/catch_1.C: New test. * g++.target/aarch64/sve/catch_2.C: Likewise. * g++.target/aarch64/sve/catch_3.C: Likewise. * g++.target/aarch64/sve/catch_4.C: Likewise. * g++.target/aarch64/sve/catch_5.C: Likewise. * g++.target/aarch64/sve/catch_6.C: Likewise. Reviewed-by: James Greenhalgh <james.greenhalgh@arm.com> From-SVN: r256615		2018-01-13 17:56:52 +00:00
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aarch64-unwind.h	Update copyright years.	2018-01-03 11:03:58 +01:00
crtfastmath.c	Update copyright years.	2018-01-03 11:03:58 +01:00
crti.S	Update copyright years.	2018-01-03 11:03:58 +01:00
crtn.S	Update copyright years.	2018-01-03 11:03:58 +01:00
freebsd-unwind.h	Update copyright years.	2018-01-03 11:03:58 +01:00
linux-unwind.h	Update copyright years.	2018-01-03 11:03:58 +01:00
sfp-exceptions.c	Update copyright years.	2018-01-03 11:03:58 +01:00
sfp-machine.h	Update copyright years.	2018-01-03 11:03:58 +01:00
sync-cache.c	Update copyright years.	2018-01-03 11:03:58 +01:00
t-aarch64	Update copyright years.	2018-01-03 11:03:58 +01:00
t-softfp	…
value-unwind.h	SVE unwinding	2018-01-13 17:56:52 +00:00