49 lines
756 B
C
49 lines
756 B
C
/* SPDX-License-Identifier: MIT */
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#ifndef LIBURING_ARCH_RISCV64_LIB_H
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#define LIBURING_ARCH_RISCV64_LIB_H
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#include <elf.h>
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#include <sys/auxv.h>
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#include "../../syscall.h"
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static inline long __get_page_size(void)
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{
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Elf64_Off buf[2];
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long ret = 4096;
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int fd;
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fd = __sys_open("/proc/self/auxv", O_RDONLY, 0);
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if (fd < 0)
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return ret;
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while (1) {
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ssize_t x;
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x = __sys_read(fd, buf, sizeof(buf));
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if (x < (long) sizeof(buf))
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break;
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if (buf[0] == AT_PAGESZ) {
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ret = buf[1];
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break;
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}
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}
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__sys_close(fd);
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return ret;
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}
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static inline long get_page_size(void)
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{
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static long cache_val;
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if (cache_val)
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return cache_val;
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cache_val = __get_page_size();
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return cache_val;
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}
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#endif /* #ifndef LIBURING_ARCH_RISCV64_LIB_H */
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