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* riscv: Less inefficient gcc tishift helpers (and export their symbols)Olof Johansson2020-01-181-18/+57
| | | | | | | | | | | | | | | | | | | | The existing __lshrti3 was really inefficient, and the other two helpers are also needed to compile some modules. Add the missing versions, and export all of the symbols like arm64 already does. This code is based on the assembly generated by libgcc builds. This fixes a build break triggered by ubsan: riscv64-unknown-linux-gnu-ld: lib/ubsan.o: in function `.L2': ubsan.c:(.text.unlikely+0x38): undefined reference to `__ashlti3' riscv64-unknown-linux-gnu-ld: ubsan.c:(.text.unlikely+0x42): undefined reference to `__ashrti3' Signed-off-by: Olof Johansson <olof@lixom.net> [paul.walmsley@sifive.com: use SYM_FUNC_{START,END} instead of ENTRY/ENDPROC; note libgcc origin] Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
* treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 286Thomas Gleixner2019-06-051-9/+1
| | | | | | | | | | | | | | | | | | | | | | | | | Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation version 2 this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 97 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141901.025053186@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* RISC-V: lib: minor asm cleanupOlof Johansson2018-12-211-28/+31
| | | | | | | Fix tab/space conversion and use ENTRY/ENDPROC macros. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
* RISC-V: implement __lshrti3.Alex Guo2018-08-131-0/+42
Signed-off-by: Alex Guo <xfguo@jlsemi.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>