9aae5dcd04
Implemented functions for setting up and initializing threads in the RISC-V architecture. The 'target_thread_set_upcall' function sets up the stack pointer, program counter, and function argument for new threads. The 'target_thread_init' function initializes thread registers based on the provided image information. Signed-off-by: Mark Corbin <mark@dibsco.co.uk> Signed-off-by: Ajeet Singh <itachis@FreeBSD.org> Co-authored-by: Jessica Clarke <jrtc27@jrtc27.com> Co-authored-by: Kyle Evans <kevans@FreeBSD.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-ID: <20240916155119.14610-10-itachis@FreeBSD.org> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
48 lines
1.5 KiB
C
48 lines
1.5 KiB
C
/*
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* RISC-V thread support
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*
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* Copyright (c) 2019 Mark Corbin
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef TARGET_ARCH_THREAD_H
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#define TARGET_ARCH_THREAD_H
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/* Compare with cpu_set_upcall() in riscv/riscv/vm_machdep.c */
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static inline void target_thread_set_upcall(CPURISCVState *regs,
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abi_ulong entry, abi_ulong arg, abi_ulong stack_base,
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abi_ulong stack_size)
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{
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abi_ulong sp;
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sp = ROUND_DOWN(stack_base + stack_size, 16);
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regs->gpr[xSP] = sp;
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regs->pc = entry;
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regs->gpr[xA0] = arg;
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}
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/* Compare with exec_setregs() in riscv/riscv/machdep.c */
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static inline void target_thread_init(struct target_pt_regs *regs,
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struct image_info *infop)
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{
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regs->sepc = infop->entry;
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regs->regs[xRA] = infop->entry;
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regs->regs[xA0] = infop->start_stack;
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regs->regs[xSP] = ROUND_DOWN(infop->start_stack, 16);
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}
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#endif /* TARGET_ARCH_THREAD_H */
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