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5917ea17 |
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03-Jan-2024 |
Leonardo Bras <leobras@redhat.com> |
riscv: Introduce is_compat_thread() into compat.h task_user_regset_view() makes use of a function very similar to is_compat_task(), but pointing to a any thread. In arm64 asm/compat.h there is a function very similar to that: is_compat_thread(struct thread_info *thread) Copy this function to riscv asm/compat.h and make use of it into task_user_regset_view(). Also, introduce a compile-time test for CONFIG_COMPAT and simplify the function code by removing the #ifdef. Signed-off-by: Leonardo Bras <leobras@redhat.com> Reviewed-by: Guo Ren <guoren@kernel.org> Reviewed-by: Andy Chiu <andy.chiu@sifive.com> Link: https://lore.kernel.org/r/20240103160024.70305-6-leobras@redhat.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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#
d6c78f1c |
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14-Jan-2024 |
Andy Chiu <andy.chiu@sifive.com> |
riscv: vector: do not pass task_struct into riscv_v_vstate_{save,restore}() riscv_v_vstate_{save,restore}() can operate only on the knowlege of struct __riscv_v_ext_state, and struct pt_regs. Let the caller decides which should be passed into the function. Meanwhile, the kernel-mode Vector is going to introduce another vstate, so this also makes functions potentially able to be reused. Signed-off-by: Andy Chiu <andy.chiu@sifive.com> Acked-by: Conor Dooley <conor.dooley@microchip.com> Tested-by: Björn Töpel <bjorn@rivosinc.com> Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/20240115055929.4736-8-andy.chiu@sifive.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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#
7df56cbc2 |
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14-Jan-2024 |
Andy Chiu <andy.chiu@sifive.com> |
riscv: sched: defer restoring Vector context for user User will use its Vector registers only after the kernel really returns to the userspace. So we can delay restoring Vector registers as long as we are still running in kernel mode. So, add a thread flag to indicates the need of restoring Vector and do the restore at the last arch-specific exit-to-user hook. This save the context restoring cost when we switch over multiple processes that run V in kernel mode. For example, if the kernel performs a context swicth from A->B->C, and returns to C's userspace, then there is no need to restore B's V-register. Besides, this also prevents us from repeatedly restoring V context when executing kernel-mode Vector multiple times. The cost of this is that we must disable preemption and mark vector as busy during vstate_{save,restore}. Because then the V context will not get restored back immediately when a trap-causing context switch happens in the middle of vstate_{save,restore}. Signed-off-by: Andy Chiu <andy.chiu@sifive.com> Acked-by: Conor Dooley <conor.dooley@microchip.com> Tested-by: Björn Töpel <bjorn@rivosinc.com> Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/20240115055929.4736-5-andy.chiu@sifive.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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#
9300f004 |
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24-Aug-2023 |
Andy Chiu <andy.chiu@sifive.com> |
RISC-V: Add ptrace support for vectors This patch add back the ptrace support with the following fix: - Define NT_RISCV_CSR and re-number NT_RISCV_VECTOR to prevent conflicting with gdb's NT_RISCV_CSR. - Use struct __riscv_v_regset_state to handle ptrace requests Since gdb does not directly include the note description header in Linux and has already defined NT_RISCV_CSR as 0x900, we decide to sync with gdb and renumber NT_RISCV_VECTOR to solve and prevent future conflicts. Fixes: 0c59922c769a ("riscv: Add ptrace vector support") Signed-off-by: Andy Chiu <andy.chiu@sifive.com> Link: https://lore.kernel.org/r/20230825050248.32681-1-andy.chiu@sifive.com [Palmer: Drop the unused "size" variable in riscv_vr_set().] Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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#
e3f9324b |
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16-Aug-2023 |
Palmer Dabbelt <palmer@rivosinc.com> |
RISC-V: Remove ptrace support for vectors We've found two bugs here: NT_RISCV_VECTOR steps on NT_RISCV_CSR (which is only for embedded), and we don't have vlenb in the core dumps. Given that we've have a pair of bugs croup up as part of the GDB review we've probably got other issues, so let's just cut this for 6.5 and get it right. Fixes: 0c59922c769a ("riscv: Add ptrace vector support") Reviewed-by: Maciej W. Rozycki <macro@orcam.me.uk> Signed-off-by: Andy Chiu <andy.chiu@sifive.com> Link: https://lore.kernel.org/r/20230816155450.26200-2-andy.chiu@sifive.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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#
0c59922c |
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05-Jun-2023 |
Greentime Hu <greentime.hu@sifive.com> |
riscv: Add ptrace vector support This patch adds ptrace support for riscv vector. The vector registers will be saved in datap pointer of __riscv_v_ext_state. This pointer will be set right after the __riscv_v_ext_state data structure then it will be put in ubuf for ptrace system call to get or set. It will check if the datap got from ubuf is set to the correct address or not when the ptrace system call is trying to set the vector registers. Co-developed-by: Vincent Chen <vincent.chen@sifive.com> Signed-off-by: Vincent Chen <vincent.chen@sifive.com> Signed-off-by: Greentime Hu <greentime.hu@sifive.com> Signed-off-by: Andy Chiu <andy.chiu@sifive.com> Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Reviewed-by: Palmer Dabbelt <palmer@rivosinc.com> Link: https://lore.kernel.org/r/20230605110724.21391-13-andy.chiu@sifive.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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#
f0bddf50 |
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21-Feb-2023 |
Guo Ren <guoren@kernel.org> |
riscv: entry: Convert to generic entry This patch converts riscv to use the generic entry infrastructure from kernel/entry/*. The generic entry makes maintainers' work easier and codes more elegant. Here are the changes: - More clear entry.S with handle_exception and ret_from_exception - Get rid of complex custom signal implementation - Move syscall procedure from assembly to C, which is much more readable. - Connect ret_from_fork & ret_from_kernel_thread to generic entry. - Wrap with irqentry_enter/exit and syscall_enter/exit_from_user_mode - Use the standard preemption code instead of custom Suggested-by: Huacai Chen <chenhuacai@kernel.org> Reviewed-by: Björn Töpel <bjorn@rivosinc.com> Tested-by: Yipeng Zou <zouyipeng@huawei.com> Tested-by: Jisheng Zhang <jszhang@kernel.org> Signed-off-by: Guo Ren <guoren@linux.alibaba.com> Signed-off-by: Guo Ren <guoren@kernel.org> Cc: Ben Hutchings <ben@decadent.org.uk> Link: https://lore.kernel.org/r/20230222033021.983168-5-guoren@kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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#
8574bf8d |
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21-Feb-2023 |
Guo Ren <guoren@kernel.org> |
riscv: ptrace: Remove duplicate operation The TIF_SYSCALL_TRACE is controlled by a common code, see kernel/ptrace.c and include/linux/thread_info.h. clear_task_syscall_work(child, SYSCALL_TRACE); Signed-off-by: Guo Ren <guoren@linux.alibaba.com> Signed-off-by: Guo Ren <guoren@kernel.org> Reviewed-by: Oleg Nesterov <oleg@redhat.com> Reviewed-by: Björn Töpel <bjorn@rivosinc.com> Link: https://lore.kernel.org/r/20230222033021.983168-3-guoren@kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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#
4608c159 |
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05-Apr-2022 |
Guo Ren <guoren@kernel.org> |
riscv: compat: ptrace: Add compat_arch_ptrace implement Now, you can use native gdb on riscv64 for rv32 app debugging. $ uname -a Linux buildroot 5.16.0-rc4-00036-gbef6b82fdf23-dirty #53 SMP Mon Dec 20 23:06:53 CST 2021 riscv64 GNU/Linux $ cat /proc/cpuinfo processor : 0 hart : 0 isa : rv64imafdcsuh mmu : sv48 $ file /bin/busybox /bin/busybox: setuid ELF 32-bit LSB shared object, UCB RISC-V, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-riscv32-ilp32d.so.1, for GNU/Linux 5.15.0, stripped $ file /usr/bin/gdb /usr/bin/gdb: ELF 32-bit LSB shared object, UCB RISC-V, version 1 (GNU/Linux), dynamically linked, interpreter /lib/ld-linux-riscv32-ilp32d.so.1, for GNU/Linux 5.15.0, stripped $ /usr/bin/gdb /bin/busybox GNU gdb (GDB) 10.2 Copyright (C) 2021 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> ... Reading symbols from /bin/busybox... (No debugging symbols found in /bin/busybox) (gdb) b main Breakpoint 1 at 0x8ddc (gdb) r Starting program: /bin/busybox Failed to read a valid object file image from memory. Breakpoint 1, 0x555a8ddc in main () (gdb) i r ra 0x77df0b74 0x77df0b74 sp 0x7fdd3d10 0x7fdd3d10 gp 0x5567e800 0x5567e800 <bb_common_bufsiz1+160> tp 0x77f64280 0x77f64280 t0 0x0 0 t1 0x555a6fac 1431990188 t2 0x77dd8db4 2011008436 fp 0x7fdd3e34 0x7fdd3e34 s1 0x7fdd3e34 2145205812 a0 0xffffffff -1 a1 0x2000 8192 a2 0x7fdd3e3c 2145205820 a3 0x0 0 a4 0x7fdd3d30 2145205552 a5 0x555a8dc0 1431997888 a6 0x77f2c170 2012397936 a7 0x6a7c7a2f 1786542639 s2 0x0 0 s3 0x0 0 s4 0x555a8dc0 1431997888 s5 0x77f8a3a8 2012783528 s6 0x7fdd3e3c 2145205820 s7 0x5567cecc 1432866508 --Type <RET> for more, q to quit, c to continue without paging-- s8 0x1 1 s9 0x0 0 s10 0x55634448 1432568904 s11 0x0 0 t3 0x77df0bb8 2011106232 t4 0x42fc 17148 t5 0x0 0 t6 0x40 64 pc 0x555a8ddc 0x555a8ddc <main+28> (gdb) si 0x555a78f0 in mallopt@plt () (gdb) c Continuing. BusyBox v1.34.1 (2021-12-19 22:39:48 CST) multi-call binary. BusyBox is copyrighted by many authors between 1998-2015. Licensed under GPLv2. See source distribution for detailed copyright notices. Usage: busybox [function [arguments]...] or: busybox --list[-full] ... [Inferior 1 (process 107) exited normally] (gdb) q Signed-off-by: Guo Ren <guoren@linux.alibaba.com> Signed-off-by: Guo Ren <guoren@kernel.org> Reviewed-by: Palmer Dabbelt <palmer@rivosinc.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Tested-by: Heiko Stuebner <heiko@sntech.de> Link: https://lore.kernel.org/r/20220405071314.3225832-20-guoren@kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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#
153474ba |
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27-Jan-2022 |
Eric W. Biederman <ebiederm@xmission.com> |
ptrace: Create ptrace_report_syscall_{entry,exit} in ptrace.h Rename tracehook_report_syscall_{entry,exit} to ptrace_report_syscall_{entry,exit} and place them in ptrace.h There is no longer any generic tracehook infractructure so make these ptrace specific functions ptrace specific. Reviewed-by: Kees Cook <keescook@chromium.org> Link: https://lkml.kernel.org/r/20220309162454.123006-3-ebiederm@xmission.com Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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#
8da46c0f |
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12-Jan-2022 |
Minghao Chi <chi.minghao@zte.com.cn> |
RISC-V: Remove redundant err variable Return value from user_regset_copyin() directly instead of taking this in another redundant variable. Reported-by: Zeal Robot <zealci@zte.com.cn> Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn> Signed-off-by: CGEL ZTE <cgel.zte@gmail.com> Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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#
379eb01c |
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03-Aug-2021 |
Vincent Chen <vincent.chen@sifive.com> |
riscv: Ensure the value of FP registers in the core dump file is up to date The value of FP registers in the core dump file comes from the thread.fstate. However, kernel saves the FP registers to the thread.fstate only before scheduling out the process. If no process switch happens during the exception handling process, kernel will not have a chance to save the latest value of FP registers to thread.fstate. It will cause the value of FP registers in the core dump file may be incorrect. To solve this problem, this patch force lets kernel save the FP register into the thread.fstate if the target task_struct equals the current. Signed-off-by: Vincent Chen <vincent.chen@sifive.com> Reviewed-by: Jisheng Zhang <jszhang@kernel.org> Fixes: b8c8a9590e4f ("RISC-V: Add FP register ptrace support for gdb.") Cc: stable@vger.kernel.org Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
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#
dcdc7a53 |
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17-Dec-2020 |
Patrick Stählin <me@packi.ch> |
RISC-V: Implement ptrace regs and stack API Needed for kprobes support. Copied and adapted from arm64 code. Guo Ren fixup pt_regs type for linux-5.8-rc1. Signed-off-by: Patrick Stählin <me@packi.ch> Signed-off-by: Guo Ren <guoren@linux.alibaba.com> Reviewed-by: Pekka Enberg <penberg@kernel.org> Reviewed-by: Zong Li <zong.li@sifive.com> Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
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#
2cb6cd49 |
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16-Jun-2020 |
Al Viro <viro@zeniv.linux.org.uk> |
riscv: switch to ->regset_get() Note: riscv_fpr_get() used to forget to zero-pad at the end. Not worth -stable... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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#
af33d243 |
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08-Feb-2020 |
Tycho Andersen <tycho@tycho.pizza> |
riscv: fix seccomp reject syscall code path If secure_computing() rejected a system call, we were previously setting the system call number to -1, to indicate to later code that the syscall failed. However, if something (e.g. a user notification) was sleeping, and received a signal, we may set a0 to -ERESTARTSYS and re-try the system call again. In this case, seccomp "denies" the syscall (because of the signal), and we would set a7 to -1, thus losing the value of the system call we want to restart. Instead, let's return -1 from do_syscall_trace_enter() to indicate that the syscall was rejected, so we don't clobber the value in case of -ERESTARTSYS or whatever. This commit fixes the user_notification_signal seccomp selftest on riscv to no longer hang. That test expects the system call to be re-issued after the signal, and it wasn't due to the above bug. Now that it is, everything works normally. Note that in the ptrace (tracer) case, the tracer can set the register values to whatever they want, so we still need to keep the code that handles out-of-bounds syscalls. However, we can drop the comment. We can also drop syscall_set_nr(), since it is no longer used anywhere, and the code that re-loads the value in a7 because of it. Reported in: https://lore.kernel.org/bpf/CAEn-LTp=ss0Dfv6J00=rCAy+N78U2AmhqJNjfqjr2FDpPYjxEQ@mail.gmail.com/ Reported-by: David Abdurachmanov <david.abdurachmanov@gmail.com> Signed-off-by: Tycho Andersen <tycho@tycho.ws> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
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#
5340627e |
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04-Oct-2019 |
David Abdurachmanov <david.abdurachmanov@sifive.com> |
riscv: add support for SECCOMP and SECCOMP_FILTER This patch was extensively tested on Fedora/RISCV (applied by default on top of 5.2-rc7 kernel for <2 months). The patch was also tested with 5.3-rc on QEMU and SiFive Unleashed board. libseccomp (userspace) was rebased: https://github.com/seccomp/libseccomp/pull/134 Fully passes libseccomp regression testing (simulation and live). There is one failing kernel selftest: global.user_notification_signal v1 -> v2: - return immediately if secure_computing(NULL) returns -1 - fixed whitespace issues - add missing seccomp.h - remove patch #2 (solved now) - add riscv to seccomp kernel selftest Signed-off-by: David Abdurachmanov <david.abdurachmanov@sifive.com> Cc: keescook@chromium.org Cc: me@carlosedp.com Tested-by: Carlos de Paula <me@carlosedp.com> Reviewed-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/linux-riscv/CAEn-LTp=ss0Dfv6J00=rCAy+N78U2AmhqJNjfqjr2FDpPYjxEQ@mail.gmail.com/ Link: https://lore.kernel.org/linux-riscv/CAJr-aD=UnCN9E_mdVJ2H5nt=6juRSWikZnA5HxDLQxXLbsRz-w@mail.gmail.com/ [paul.walmsley@sifive.com: cleaned up Cc: lines; fixed spelling and checkpatch issues; updated to apply] Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
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#
f3073079 |
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17-Oct-2019 |
Paul Walmsley <paul.walmsley@sifive.com> |
riscv: for C functions called only from assembly, mark with __visible Rather than adding prototypes for C functions called only by assembly code, mark them as __visible. This avoids adding prototypes that will never be used by the callers. Resolves the following sparse warnings: arch/riscv/kernel/irq.c:27:29: warning: symbol 'do_IRQ' was not declared. Should it be static? arch/riscv/kernel/ptrace.c:151:6: warning: symbol 'do_syscall_trace_enter' was not declared. Should it be static? arch/riscv/kernel/ptrace.c:165:6: warning: symbol 'do_syscall_trace_exit' was not declared. Should it be static? arch/riscv/kernel/signal.c:295:17: warning: symbol 'do_notify_resume' was not declared. Should it be static? arch/riscv/kernel/traps.c:92:1: warning: symbol 'do_trap_unknown' was not declared. Should it be static? arch/riscv/kernel/traps.c:94:1: warning: symbol 'do_trap_insn_misaligned' was not declared. Should it be static? arch/riscv/kernel/traps.c:96:1: warning: symbol 'do_trap_insn_fault' was not declared. Should it be static? arch/riscv/kernel/traps.c:98:1: warning: symbol 'do_trap_insn_illegal' was not declared. Should it be static? arch/riscv/kernel/traps.c:100:1: warning: symbol 'do_trap_load_misaligned' was not declared. Should it be static? arch/riscv/kernel/traps.c:102:1: warning: symbol 'do_trap_load_fault' was not declared. Should it be static? arch/riscv/kernel/traps.c:104:1: warning: symbol 'do_trap_store_misaligned' was not declared. Should it be static? arch/riscv/kernel/traps.c:106:1: warning: symbol 'do_trap_store_fault' was not declared. Should it be static? arch/riscv/kernel/traps.c:108:1: warning: symbol 'do_trap_ecall_u' was not declared. Should it be static? arch/riscv/kernel/traps.c:110:1: warning: symbol 'do_trap_ecall_s' was not declared. Should it be static? arch/riscv/kernel/traps.c:112:1: warning: symbol 'do_trap_ecall_m' was not declared. Should it be static? arch/riscv/kernel/traps.c:124:17: warning: symbol 'do_trap_break' was not declared. Should it be static? arch/riscv/kernel/smpboot.c:136:24: warning: symbol 'smp_callin' was not declared. Should it be static? Based on a suggestion from Luc Van Oostenryck. This version includes changes based on feedback from Christoph Hellwig <hch@lst.de>. Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com> Cc: Luc Van Oostenryck <luc.vanoostenryck@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> # for do_syscall_trace_*
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50acfb2b |
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29-May-2019 |
Thomas Gleixner <tglx@linutronix.de> |
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 286 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>
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#
775800b0 |
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06-Dec-2018 |
David Abdurachmanov <david.abdurachmanov@gmail.com> |
riscv: fix trace_sys_exit hook Fix compilation error. Signed-off-by: David Abdurachmanov <david.abdurachmanov@gmail.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
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#
008e901b |
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10-Dec-2018 |
David Abdurachmanov <david.abdurachmanov@gmail.com> |
riscv: define CREATE_TRACE_POINTS in ptrace.c Define CREATE_TRACE_POINTS in order to create functions and structures for the trace events. This is needed if HAVE_SYSCALL_TRACEPOINTS and CONFIG_FTRACE_SYSCALLS are enabled, otherwise we get linking errors: [..] MODPOST vmlinux.o kernel/trace/trace_syscalls.o: In function `.L0 ': trace_syscalls.c:(.text+0x1152): undefined reference to `__tracepoint_sys_enter' trace_syscalls.c:(.text+0x126c): undefined reference to `__tracepoint_sys_enter' trace_syscalls.c:(.text+0x1328): undefined reference to `__tracepoint_sys_enter' trace_syscalls.c:(.text+0x14aa): undefined reference to `__tracepoint_sys_enter' trace_syscalls.c:(.text+0x1684): undefined reference to `__tracepoint_sys_exit' trace_syscalls.c:(.text+0x17a0): undefined reference to `__tracepoint_sys_exit' trace_syscalls.c:(.text+0x185c): undefined reference to `__tracepoint_sys_exit' trace_syscalls.c:(.text+0x19de): undefined reference to `__tracepoint_sys_exit' arch/riscv/kernel/ptrace.o: In function `.L0 ': ptrace.c:(.text+0x4dc): undefined reference to `__tracepoint_sys_enter' ptrace.c:(.text+0x632): undefined reference to `__tracepoint_sys_exit' make: *** [Makefile:1036: vmlinux] Error 1 Signed-off-by: David Abdurachmanov <david.abdurachmanov@gmail.com> Fixes: b78002b395b4 ("riscv: add HAVE_SYSCALL_TRACEPOINTS to Kconfig") Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
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#
0aea8943 |
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29-Oct-2018 |
David Abdurachmanov <david.abdurachmanov@gmail.com> |
riscv: audit: add audit hook in do_syscall_trace_enter/exit() This patch adds auditing functions on entry to and exit from every system call invocation. Signed-off-by: David Abdurachmanov <david.abdurachmanov@gmail.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
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#
b8c8a959 |
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17-Oct-2018 |
Jim Wilson <jimw@sifive.com> |
RISC-V: Add FP register ptrace support for gdb. Add a variable and a macro to describe FP registers, assuming only D is supported. FP code is conditional on CONFIG_FPU. The FP regs and FCSR are copied separately to avoid copying struct padding. Tested by hand and with the gdb testsuite. Signed-off-by: Jim Wilson <jimw@sifive.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
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#
1db9b809 |
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11-Jun-2018 |
Jim Wilson <jimw@sifive.com> |
RISC-V: Fix PTRACE_SETREGSET bug. In riscv_gpr_set, pass regs instead of ®s to user_regset_copyin to fix gdb segfault. Signed-off-by: Jim Wilson <jimw@sifive.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
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#
e2c0cdfb |
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10-Jul-2017 |
Palmer Dabbelt <palmer@dabbelt.com> |
RISC-V: User-facing API This patch contains code that is in some way visible to the user: including via system calls, the VDSO, module loading and signal handling. It also contains some generic code that is ABI visible. Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
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