80 lines
3.0 KiB
Diff
80 lines
3.0 KiB
Diff
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From 4e6e6b52fe2f88584645a761bb342ac89d6c2860 Mon Sep 17 00:00:00 2001
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From: Bruno Haible <bruno@clisp.org>
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Date: Thu, 15 Mar 2018 19:01:27 +0100
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Subject: [PATCH] Improve support for Linux/RISC-V.
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[Thomas: backported from upstream commit
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671b2528b55c57eda1a8fe5872ff1ef61014235f, drop ChangeLog changes.]
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Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
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---
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configure.ac | 3 +++
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src/Makefile.am | 1 +
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src/fault-linux-riscv64.h | 29 +++++++++++++++++++++++++++++
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3 files changed, 33 insertions(+)
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create mode 100644 src/fault-linux-riscv64.h
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diff --git a/configure.ac b/configure.ac
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index 74ce6b4..9775cfb 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -428,6 +428,9 @@ if test -z "$CFG_FAULT" && test "$sv_cv_fault_posix" = yes; then
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powerpc* | rs6000)
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CFG_FAULT=fault-linux-powerpc.h
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;;
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+ riscv64)
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+ CFG_FAULT=fault-linux-riscv64.h
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+ ;;
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s390*)
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CFG_FAULT=fault-linux-s390.h
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;;
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diff --git a/src/Makefile.am b/src/Makefile.am
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index 3afa398..9a9982f 100644
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--- a/src/Makefile.am
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+++ b/src/Makefile.am
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@@ -42,6 +42,7 @@ noinst_HEADERS = \
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fault-linux-m68k.h fault-linux-m68k-old.h fault-linux-m68k-old.c \
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fault-linux-mips.h fault-linux-mips-old.h \
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fault-linux-powerpc.h fault-linux-powerpc-old.h \
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+ fault-linux-riscv64.h \
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fault-linux-s390.h fault-linux-s390-old.h \
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fault-linux-sh.h fault-linux-sh-old.h \
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fault-linux-sparc.h fault-linux-sparc-old.h \
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diff --git a/src/fault-linux-riscv64.h b/src/fault-linux-riscv64.h
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new file mode 100644
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index 0000000..14831bf
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--- /dev/null
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+++ b/src/fault-linux-riscv64.h
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@@ -0,0 +1,29 @@
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+/* Fault handler information. Linux/RISC-V 64-bit version.
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+ Copyright (C) 2018 Bruno Haible <bruno@clisp.org>
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+
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+ This program is free software; you can redistribute it and/or modify
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+ it under the terms of the GNU General Public License as published by
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+ the Free Software Foundation; either version 2, or (at your option)
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+ any later version.
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+
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+ This program is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ GNU General Public License for more details.
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+
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+ You should have received a copy of the GNU General Public License
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+ along with this program; if not, write to the Free Software Foundation,
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+ Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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+
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+#include "fault-posix-ucontext.h"
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+
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+/* See glibc/sysdeps/unix/sysv/linux/riscv/sys/ucontext.h
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+ and the definition of GET_STACK in
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+ glibc/sysdeps/unix/sysv/linux/riscv/sigcontextinfo.h.
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+ Note that the 'mcontext_t' defined in
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+ glibc/sysdeps/unix/sysv/linux/riscv/sys/ucontext.h
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+ and the 'struct sigcontext' defined in
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+ glibc/sysdeps/unix/sysv/linux/riscv/bits/sigcontext.h
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+ start with the same block of 32 general-purpose registers. */
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+
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+#define SIGSEGV_FAULT_STACKPOINTER ((ucontext_t *) ucp)->uc_mcontext.__gregs[REG_SP]
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--
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2.19.1
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