From 4e6e6b52fe2f88584645a761bb342ac89d6c2860 Mon Sep 17 00:00:00 2001 From: Bruno Haible Date: Thu, 15 Mar 2018 19:01:27 +0100 Subject: [PATCH] Improve support for Linux/RISC-V. [Thomas: backported from upstream commit 671b2528b55c57eda1a8fe5872ff1ef61014235f, drop ChangeLog changes.] Signed-off-by: Thomas Petazzoni --- configure.ac | 3 +++ src/Makefile.am | 1 + src/fault-linux-riscv64.h | 29 +++++++++++++++++++++++++++++ 3 files changed, 33 insertions(+) create mode 100644 src/fault-linux-riscv64.h diff --git a/configure.ac b/configure.ac index 74ce6b4..9775cfb 100644 --- a/configure.ac +++ b/configure.ac @@ -428,6 +428,9 @@ if test -z "$CFG_FAULT" && test "$sv_cv_fault_posix" = yes; then powerpc* | rs6000) CFG_FAULT=fault-linux-powerpc.h ;; + riscv64) + CFG_FAULT=fault-linux-riscv64.h + ;; s390*) CFG_FAULT=fault-linux-s390.h ;; diff --git a/src/Makefile.am b/src/Makefile.am index 3afa398..9a9982f 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -42,6 +42,7 @@ noinst_HEADERS = \ fault-linux-m68k.h fault-linux-m68k-old.h fault-linux-m68k-old.c \ fault-linux-mips.h fault-linux-mips-old.h \ fault-linux-powerpc.h fault-linux-powerpc-old.h \ + fault-linux-riscv64.h \ fault-linux-s390.h fault-linux-s390-old.h \ fault-linux-sh.h fault-linux-sh-old.h \ fault-linux-sparc.h fault-linux-sparc-old.h \ diff --git a/src/fault-linux-riscv64.h b/src/fault-linux-riscv64.h new file mode 100644 index 0000000..14831bf --- /dev/null +++ b/src/fault-linux-riscv64.h @@ -0,0 +1,29 @@ +/* Fault handler information. Linux/RISC-V 64-bit version. + Copyright (C) 2018 Bruno Haible + + 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; either version 2, or (at your option) + any later version. + + 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. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ + +#include "fault-posix-ucontext.h" + +/* See glibc/sysdeps/unix/sysv/linux/riscv/sys/ucontext.h + and the definition of GET_STACK in + glibc/sysdeps/unix/sysv/linux/riscv/sigcontextinfo.h. + Note that the 'mcontext_t' defined in + glibc/sysdeps/unix/sysv/linux/riscv/sys/ucontext.h + and the 'struct sigcontext' defined in + glibc/sysdeps/unix/sysv/linux/riscv/bits/sigcontext.h + start with the same block of 32 general-purpose registers. */ + +#define SIGSEGV_FAULT_STACKPOINTER ((ucontext_t *) ucp)->uc_mcontext.__gregs[REG_SP] -- 2.19.1