From: guoren@kernel.org
To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de,
anup@brainfault.org, gregkh@linuxfoundation.org,
liush@allwinnertech.com, wefu@redhat.com, drew@beagleboard.org,
wangjunqiang@iscas.ac.cn, hch@lst.de
Cc: linux-arch@vger.kernel.org, linux-s390@vger.kernel.org,
Guo Ren <guoren@linux.alibaba.com>,
linux-parisc@vger.kernel.org, x86@kernel.org,
linux-kernel@vger.kernel.org, linux-csky@vger.kernel.org,
linux-mips@vger.kernel.org, sparclinux@vger.kernel.org,
linux-riscv@lists.infradead.org, linuxppc-dev@lists.ozlabs.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH V5 09/21] riscv: compat: Add basic compat data type implementation
Date: Tue, 1 Feb 2022 23:05:33 +0800 [thread overview]
Message-ID: <20220201150545.1512822-10-guoren@kernel.org> (raw)
In-Reply-To: <20220201150545.1512822-1-guoren@kernel.org>
From: Guo Ren <guoren@linux.alibaba.com>
Implement riscv asm/compat.h for struct compat_xxx,
is_compat_task, compat_user_regset, regset convert.
The rv64 compat.h has inherited most of the structs
from the generic one.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
---
arch/riscv/include/asm/compat.h | 129 +++++++++++++++++++++++++++
arch/riscv/include/asm/thread_info.h | 1 +
2 files changed, 130 insertions(+)
create mode 100644 arch/riscv/include/asm/compat.h
diff --git a/arch/riscv/include/asm/compat.h b/arch/riscv/include/asm/compat.h
new file mode 100644
index 000000000000..2ac955b51148
--- /dev/null
+++ b/arch/riscv/include/asm/compat.h
@@ -0,0 +1,129 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_COMPAT_H
+#define __ASM_COMPAT_H
+
+#define COMPAT_UTS_MACHINE "riscv\0\0"
+
+/*
+ * Architecture specific compatibility types
+ */
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/sched/task_stack.h>
+#include <asm-generic/compat.h>
+
+static inline int is_compat_task(void)
+{
+ return test_thread_flag(TIF_32BIT);
+}
+
+struct compat_user_regs_struct {
+ compat_ulong_t pc;
+ compat_ulong_t ra;
+ compat_ulong_t sp;
+ compat_ulong_t gp;
+ compat_ulong_t tp;
+ compat_ulong_t t0;
+ compat_ulong_t t1;
+ compat_ulong_t t2;
+ compat_ulong_t s0;
+ compat_ulong_t s1;
+ compat_ulong_t a0;
+ compat_ulong_t a1;
+ compat_ulong_t a2;
+ compat_ulong_t a3;
+ compat_ulong_t a4;
+ compat_ulong_t a5;
+ compat_ulong_t a6;
+ compat_ulong_t a7;
+ compat_ulong_t s2;
+ compat_ulong_t s3;
+ compat_ulong_t s4;
+ compat_ulong_t s5;
+ compat_ulong_t s6;
+ compat_ulong_t s7;
+ compat_ulong_t s8;
+ compat_ulong_t s9;
+ compat_ulong_t s10;
+ compat_ulong_t s11;
+ compat_ulong_t t3;
+ compat_ulong_t t4;
+ compat_ulong_t t5;
+ compat_ulong_t t6;
+};
+
+static inline void regs_to_cregs(struct compat_user_regs_struct *cregs,
+ struct pt_regs *regs)
+{
+ cregs->pc = (compat_ulong_t) regs->epc;
+ cregs->ra = (compat_ulong_t) regs->ra;
+ cregs->sp = (compat_ulong_t) regs->sp;
+ cregs->gp = (compat_ulong_t) regs->gp;
+ cregs->tp = (compat_ulong_t) regs->tp;
+ cregs->t0 = (compat_ulong_t) regs->t0;
+ cregs->t1 = (compat_ulong_t) regs->t1;
+ cregs->t2 = (compat_ulong_t) regs->t2;
+ cregs->s0 = (compat_ulong_t) regs->s0;
+ cregs->s1 = (compat_ulong_t) regs->s1;
+ cregs->a0 = (compat_ulong_t) regs->a0;
+ cregs->a1 = (compat_ulong_t) regs->a1;
+ cregs->a2 = (compat_ulong_t) regs->a2;
+ cregs->a3 = (compat_ulong_t) regs->a3;
+ cregs->a4 = (compat_ulong_t) regs->a4;
+ cregs->a5 = (compat_ulong_t) regs->a5;
+ cregs->a6 = (compat_ulong_t) regs->a6;
+ cregs->a7 = (compat_ulong_t) regs->a7;
+ cregs->s2 = (compat_ulong_t) regs->s2;
+ cregs->s3 = (compat_ulong_t) regs->s3;
+ cregs->s4 = (compat_ulong_t) regs->s4;
+ cregs->s5 = (compat_ulong_t) regs->s5;
+ cregs->s6 = (compat_ulong_t) regs->s6;
+ cregs->s7 = (compat_ulong_t) regs->s7;
+ cregs->s8 = (compat_ulong_t) regs->s8;
+ cregs->s9 = (compat_ulong_t) regs->s9;
+ cregs->s10 = (compat_ulong_t) regs->s10;
+ cregs->s11 = (compat_ulong_t) regs->s11;
+ cregs->t3 = (compat_ulong_t) regs->t3;
+ cregs->t4 = (compat_ulong_t) regs->t4;
+ cregs->t5 = (compat_ulong_t) regs->t5;
+ cregs->t6 = (compat_ulong_t) regs->t6;
+};
+
+static inline void cregs_to_regs(struct compat_user_regs_struct *cregs,
+ struct pt_regs *regs)
+{
+ regs->epc = (unsigned long) cregs->pc;
+ regs->ra = (unsigned long) cregs->ra;
+ regs->sp = (unsigned long) cregs->sp;
+ regs->gp = (unsigned long) cregs->gp;
+ regs->tp = (unsigned long) cregs->tp;
+ regs->t0 = (unsigned long) cregs->t0;
+ regs->t1 = (unsigned long) cregs->t1;
+ regs->t2 = (unsigned long) cregs->t2;
+ regs->s0 = (unsigned long) cregs->s0;
+ regs->s1 = (unsigned long) cregs->s1;
+ regs->a0 = (unsigned long) cregs->a0;
+ regs->a1 = (unsigned long) cregs->a1;
+ regs->a2 = (unsigned long) cregs->a2;
+ regs->a3 = (unsigned long) cregs->a3;
+ regs->a4 = (unsigned long) cregs->a4;
+ regs->a5 = (unsigned long) cregs->a5;
+ regs->a6 = (unsigned long) cregs->a6;
+ regs->a7 = (unsigned long) cregs->a7;
+ regs->s2 = (unsigned long) cregs->s2;
+ regs->s3 = (unsigned long) cregs->s3;
+ regs->s4 = (unsigned long) cregs->s4;
+ regs->s5 = (unsigned long) cregs->s5;
+ regs->s6 = (unsigned long) cregs->s6;
+ regs->s7 = (unsigned long) cregs->s7;
+ regs->s8 = (unsigned long) cregs->s8;
+ regs->s9 = (unsigned long) cregs->s9;
+ regs->s10 = (unsigned long) cregs->s10;
+ regs->s11 = (unsigned long) cregs->s11;
+ regs->t3 = (unsigned long) cregs->t3;
+ regs->t4 = (unsigned long) cregs->t4;
+ regs->t5 = (unsigned long) cregs->t5;
+ regs->t6 = (unsigned long) cregs->t6;
+};
+
+#endif /* __ASM_COMPAT_H */
diff --git a/arch/riscv/include/asm/thread_info.h b/arch/riscv/include/asm/thread_info.h
index 60da0dcacf14..9392e35c689d 100644
--- a/arch/riscv/include/asm/thread_info.h
+++ b/arch/riscv/include/asm/thread_info.h
@@ -91,6 +91,7 @@ struct thread_info {
#define TIF_SECCOMP 8 /* syscall secure computing */
#define TIF_NOTIFY_SIGNAL 9 /* signal notifications exist */
#define TIF_UPROBE 10 /* uprobe breakpoint or singlestep */
+#define TIF_32BIT 11 /* 32bit process */
#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME)
--
2.25.1
next prev parent reply other threads:[~2022-02-01 15:12 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-01 15:05 [PATCH V5 00/21] riscv: compat: Add COMPAT mode support for rv64 guoren
2022-02-01 15:05 ` [PATCH V5 01/21] uapi: simplify __ARCH_FLOCK{,64}_PAD a little guoren
2022-02-01 15:05 ` [PATCH V5 02/21] uapi: always define F_GETLK64/F_SETLK64/F_SETLKW64 in fcntl.h guoren
2022-02-01 15:05 ` [PATCH V5 03/21] compat: consolidate the compat_flock{, 64} definition guoren
2022-02-01 15:05 ` [PATCH V5 04/21] kconfig: Add SYSVIPC_COMPAT for all architectures guoren
2022-02-01 15:05 ` [PATCH V5 05/21] fs: stat: compat: Add __ARCH_WANT_COMPAT_STAT guoren
2022-02-01 15:05 ` [PATCH V5 06/21] asm-generic: compat: Cleanup duplicate definitions guoren
2022-02-02 7:48 ` Christoph Hellwig
2022-02-01 15:05 ` [PATCH V5 07/21] syscalls: compat: Fix the missing part for __SYSCALL_COMPAT guoren
2022-02-01 15:05 ` [PATCH V5 08/21] riscv: Fixup difference with defconfig guoren
2022-02-01 15:05 ` guoren [this message]
2022-02-23 1:42 ` [PATCH V5 09/21] riscv: compat: Add basic compat data type implementation Palmer Dabbelt
2022-02-23 8:54 ` Guo Ren
2022-02-01 15:05 ` [PATCH V5 10/21] riscv: compat: Re-implement TASK_SIZE for COMPAT_32BIT guoren
2022-02-01 15:05 ` [PATCH V5 11/21] riscv: compat: syscall: Add compat_sys_call_table implementation guoren
2022-02-01 15:05 ` [PATCH V5 12/21] riscv: compat: syscall: Add entry.S implementation guoren
2022-02-23 1:42 ` Palmer Dabbelt
2022-02-01 15:05 ` [PATCH V5 13/21] riscv: compat: process: Add UXL_32 support in start_thread guoren
2022-02-23 1:42 ` Palmer Dabbelt
2022-02-23 9:21 ` Guo Ren
2022-02-01 15:05 ` [PATCH V5 14/21] riscv: compat: Add elf.h implementation guoren
2022-02-01 15:05 ` [PATCH V5 15/21] riscv: compat: Add hw capability check for elf guoren
2022-02-02 2:02 ` Guo Ren
2022-02-02 7:51 ` Christoph Hellwig
2022-02-03 2:44 ` Guo Ren
2022-02-01 15:05 ` [PATCH V5 16/21] riscv: compat: vdso: Add rv32 VDSO base code implementation guoren
2022-02-23 1:42 ` Palmer Dabbelt
2022-02-23 9:55 ` Guo Ren
2022-02-01 15:05 ` [PATCH V5 17/21] riscv: compat: vdso: Add setup additional pages implementation guoren
2022-02-23 1:42 ` Palmer Dabbelt
2022-02-23 11:49 ` Guo Ren
2022-02-24 1:36 ` Guo Ren
[not found] ` <4379941.LvFx2qVVIh@eto.sf-tec.de>
2022-02-23 12:42 ` Guo Ren
2022-02-01 15:05 ` [PATCH V5 18/21] riscv: compat: signal: Add rt_frame implementation guoren
2022-02-23 1:42 ` Palmer Dabbelt
2022-02-01 15:05 ` [PATCH V5 19/21] riscv: compat: ptrace: Add compat_arch_ptrace implement guoren
2022-02-23 1:42 ` Palmer Dabbelt
2022-02-01 15:05 ` [PATCH V5 20/21] riscv: compat: Add COMPAT Kbuild skeletal support guoren
2022-02-01 15:05 ` [PATCH V5 21/21] KVM: compat: riscv: Prevent KVM_COMPAT from being selected guoren
2022-02-01 15:44 ` Anup Patel
2022-02-01 16:00 ` Paolo Bonzini
2022-02-01 16:11 ` Anup Patel
2022-02-01 16:16 ` Guo Ren
2022-02-23 1:42 ` Palmer Dabbelt
2022-02-08 7:43 ` [PATCH V5 00/21] riscv: compat: Add COMPAT mode support for rv64 Guo Ren
2022-02-23 1:43 ` Palmer Dabbelt
2022-02-23 10:59 ` Arnd Bergmann
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