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bsd-user: Define RISC-V signal handling structures and constants 

Added definitions for RISC-V signal handling, including structures
and constants for managing signal frames and context

Signed-off-by: Mark Corbin <mark@dibsco.co.uk>
Signed-off-by: Ajeet Singh <itachis@FreeBSD.org>
Co-authored-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20240916155119.14610-14-itachis@FreeBSD.org>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Mark Corbin 2024-09-17 01:51:15 +10:00 committed by Alistair Francis
parent 25b08c4da8
commit 07e2671120
1 changed files with 75 additions and 0 deletions
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75
bsd-user/riscv/target_arch_signal.h Normal file
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/*
* RISC-V signal definitions
*
* Copyright (c) 2019 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 TARGET_ARCH_SIGNAL_H
#define TARGET_ARCH_SIGNAL_H
#include "cpu.h"
#define TARGET_INSN_SIZE 4 /* riscv instruction size */
/* Size of the signal trampoline code placed on the stack. */
#define TARGET_SZSIGCODE ((abi_ulong)(7 * TARGET_INSN_SIZE))
/* Compare with riscv/include/_limits.h */
#define TARGET_MINSIGSTKSZ (1024 * 4)
#define TARGET_SIGSTKSZ (TARGET_MINSIGSTKSZ + 32768)
struct target_gpregs {
uint64_t gp_ra;
uint64_t gp_sp;
uint64_t gp_gp;
uint64_t gp_tp;
uint64_t gp_t[7];
uint64_t gp_s[12];
uint64_t gp_a[8];
uint64_t gp_sepc;
uint64_t gp_sstatus;
};
struct target_fpregs {
uint64_t fp_x[32][2];
uint64_t fp_fcsr;
uint32_t fp_flags;
uint32_t pad;
};
typedef struct target_mcontext {
struct target_gpregs mc_gpregs;
struct target_fpregs mc_fpregs;
uint32_t mc_flags;
#define TARGET_MC_FP_VALID 0x01
uint32_t mc_pad;
uint64_t mc_spare[8];
} target_mcontext_t;
#define TARGET_MCONTEXT_SIZE 864
#define TARGET_UCONTEXT_SIZE 936
#include "target_os_ucontext.h"
struct target_sigframe {
target_ucontext_t sf_uc; /* = *sf_uncontext */
target_siginfo_t sf_si; /* = *sf_siginfo (SA_SIGINFO case)*/
};
#define TARGET_SIGSTACK_ALIGN 16
#endif /* TARGET_ARCH_SIGNAL_H */