diff options
| author | Guo Ren <guoren@linux.alibaba.com> | 2022-04-05 15:13:12 +0800 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2022-05-17 16:37:21 -0700 |
| commit | 7383ee05314be58f8f9f018ee0ac53bef3808aea (patch) | |
| tree | a89a2a6a09629f049a1cfef0aa5a1daca90f401e /arch/riscv/kernel/signal.c | |
| parent | 3092eb45637573c5e435fbf5eaf9516316e5f9c6 (diff) | |
riscv: compat: signal: Add rt_frame implementation
Implement compat_setup_rt_frame for sigcontext save & restore. The
main process is the same with signal, but the rv32 pt_regs' size
is different from rv64's, so we needs convert them.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Reviewed-by: Palmer Dabbelt <palmer@rivosinc.com>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20220405071314.3225832-19-guoren@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/kernel/signal.c')
| -rw-r--r-- | arch/riscv/kernel/signal.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/riscv/kernel/signal.c b/arch/riscv/kernel/signal.c index 9f4e59f80551..38b05ca6fe66 100644 --- a/arch/riscv/kernel/signal.c +++ b/arch/riscv/kernel/signal.c @@ -6,6 +6,7 @@ * Copyright (C) 2012 Regents of the University of California */ +#include <linux/compat.h> #include <linux/signal.h> #include <linux/uaccess.h> #include <linux/syscalls.h> @@ -14,6 +15,7 @@ #include <asm/ucontext.h> #include <asm/vdso.h> +#include <asm/signal32.h> #include <asm/switch_to.h> #include <asm/csr.h> @@ -261,7 +263,10 @@ static void handle_signal(struct ksignal *ksig, struct pt_regs *regs) rseq_signal_deliver(ksig, regs); /* Set up the stack frame */ - ret = setup_rt_frame(ksig, oldset, regs); + if (is_compat_task()) + ret = compat_setup_rt_frame(ksig, oldset, regs); + else + ret = setup_rt_frame(ksig, oldset, regs); signal_setup_done(ret, ksig, 0); } |