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https://github.com/RT-Thread/rt-thread.git
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721dfbfe01
- Implemented vDSO functionality for the RISC-V architecture, including the necessary source files and linker scripts. - Introduced a new `vdso_sys.c` file for RISC-V, containing functions to handle time retrieval using the vDSO mechanism. - Created architecture-specific linker scripts (`vdso.lds.S`) for both AArch64 and RISC-V. - Updated the build system to support vDSO compilation for RISC-V, including necessary adjustments in `SConstruct` files. - Refactored existing vDSO code to improve compatibility and maintainability across architectures. - Adjusted the maximum number of PTY devices in the terminal configuration from 64 to 32 for better resource management. - Fixed minor issues in existing code, including correcting the path for the vDSO shared library and ensuring proper function definitions.
35 lines
915 B
C
35 lines
915 B
C
/*
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* Copyright (c) 2006-2025 RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2025-04-22 ScuDays Add VDSO functionality under the riscv64 architecture.
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*/
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#include <rtthread.h>
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#include <ktime.h>
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#include <time.h>
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#include <vdso_datapage.h>
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#include <vdso_data.h>
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#include <encoding.h>
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void rt_vdso_update_glob_time(void)
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{
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struct vdso_data *vdata = get_k_vdso_data();
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struct timespec *vdso_ts;
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uint64_t initdata = vdata->realtime_initdata;
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rt_vdso_write_begin(vdata);
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vdso_ts = &vdata[CS_HRES_COARSE].basetime[CLOCK_REALTIME];
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rt_ktime_boottime_get_ns(vdso_ts);
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vdso_ts->tv_sec = initdata + vdso_ts->tv_sec;
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vdso_ts = &vdata[CS_HRES_COARSE].basetime[CLOCK_MONOTONIC];
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rt_ktime_boottime_get_ns(vdso_ts);
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vdata->cycle_last = rdtime();
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rt_vdso_write_end(vdata);
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}
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