This reverts commit bce5507c02.
The update of LLVM to clang-r498229 resolved the error with sext.w as
resolved in D143594.
Bug: 275574215
Test: Verified boot of riscv64 phone target.
Change-Id: Ie31b7db03004c5aafb6067713ef5f819e0706b64
Cuttlefish still boots to homescreen, all instructions in the extension
are actually seen to be in use, and the bionic tests still pass.
Test: see above
Change-Id: I429729a722cdd7b3bdf257cb7329ee151ec998a0
Cuttlefish still boots to homescreen, all instructions in the extension
are actually seen to be in use, and the bionic tests still pass.
Test: see above
Change-Id: I6373fa6245115b9b6c845db03ee73b321c07e02a
We're switching from x18 to gp, in stages. This change frees up x18
again now bionic and ART have switched to gp. There's no need for a
corresponding "reserve gp" change because gp is automatically reserved.
That's what makes it the perfect choice for shadow call stack (at
least until we get Zsslpcfi and an actual hardware shadow stack pointer
special-purpose register).
Bug: https://github.com/google/android-riscv64/issues/72
Bug: http://b/277909695
Test: treehugger
Change-Id: Iaee1d44cba8daf5d4a27a3791fe3cc28ed1a5d9a
This reverts commit 9838acffdd.
Reason for revert: b/274947458
Broke CI.
Will reland with QEMU options once the host image is fixed.
Change-Id: I6ad847cde2a291b3dd5b92314b2011744de50883
This causes us to align the text section to 4KiB, not just the data
section. From the bug that added this for arm64, there was an admission
that it costs 17MiB across the tree, and a not entirely convincing claim
of a performance improvement (undermined by the fact that "some stuff
was faster, some stuff was slower"). See http://b/150506341 for that.
Anyway, let's assume we don't want this for riscv64 for now.
Test: `mm -j` in bionic and readelf on the resulting libtest_empty.so
Change-Id: I0ed592a97ef705175191d9c66271a599af4eb18f
Building for riscv64 fails with link errors on __thread variables.
Set -fno-emulated-tls to fix it.
Bug: 254713216
Test: lunch aosp_riscv64-userdebug && m ALLOW_MISSING_DEPENDENCIES=true ndk_sysroot
Change-Id: I3dca81dfd277d681b6c868a5e8385e3a37335a5f
Add barebones riscv64-linux-android support. This should be enough
to add riscv64-specific entries to Android.bp files, but can't
actually compile anything until there are riscv64 toolchains.
Test: arch_test.go
Change-Id: I0dcc7e797d9352dd38243be908a7f19004ff3db1
