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[12/18] bsd-user: Define RISC-V system call structures and constants

Message ID 20240802083423.142365-13-itachis@FreeBSD.org
State New
Headers show
Series bsd-user: Comprehensive RISCV support | expand

Commit Message

Ajeet Singh Aug. 2, 2024, 8:34 a.m. UTC 
From: Mark Corbin <mark.corbin@embecsom.com>

Introduced definitions for the RISC-V system call interface, including
the 'target_pt_regs' structure that outlines the register storage
layout during a system call.
Added constants for hardware machine identifiers.

Signed-off-by: Mark Corbin <mark.corbin@embecsom.com>
Signed-off-by: Ajeet Singh <itachis@FreeBSD.org>
Co-authored-by: Jessica Clarke <jrtc27@jrtc27.com>
---
 bsd-user/riscv/target_syscall.h | 38 +++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 bsd-user/riscv/target_syscall.h

Comments

Richard Henderson Aug. 2, 2024, 1:35 p.m. UTC | #1 
On 8/2/24 18:34, Ajeet Singh wrote:
> From: Mark Corbin<mark.corbin@embecsom.com>
> 
> Introduced definitions for the RISC-V system call interface, including
> the 'target_pt_regs' structure that outlines the register storage
> layout during a system call.
> Added constants for hardware machine identifiers.
> 
> Signed-off-by: Mark Corbin<mark.corbin@embecsom.com>
> Signed-off-by: Ajeet Singh<itachis@FreeBSD.org>
> Co-authored-by: Jessica Clarke<jrtc27@jrtc27.com>
> ---
>   bsd-user/riscv/target_syscall.h | 38 +++++++++++++++++++++++++++++++++
>   1 file changed, 38 insertions(+)
>   create mode 100644 bsd-user/riscv/target_syscall.h

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

r~
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Patch

diff --git a/bsd-user/riscv/target_syscall.h b/bsd-user/riscv/target_syscall.h
new file mode 100644
index 0000000000..e7e5231309
--- /dev/null
+++ b/bsd-user/riscv/target_syscall.h
@@ -0,0 +1,38 @@ 
+/*
+ *  RISC-V system call definitions
+ *
+ *  Copyright (c) Mark Corbin
+ *
+ *  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 of the License, 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef BSD_USER_RISCV_TARGET_SYSCALL_H
+#define BSD_USER_RISCV_TARGET_SYSCALL_H
+
+/*
+ * struct target_pt_regs defines the way the registers are stored on the stack
+ * during a system call.
+ */
+
+struct target_pt_regs {
+    abi_ulong regs[32];
+    abi_ulong sepc;
+};
+
+#define UNAME_MACHINE "riscv64"
+
+#define TARGET_HW_MACHINE       "riscv"
+#define TARGET_HW_MACHINE_ARCH  UNAME_MACHINE
+
+#endif /* BSD_USER_RISCV_TARGET_SYSCALL_H */