cdfb725ca3
this works around pcc's lack of working support for weak references, and in principle is nice because it gets us back to the stage where the only weak symbol feature we use is weak aliases, nothing else. having fewer dependencies on fancy linker features is a good thing.
33 lines
782 B
C
33 lines
782 B
C
#include <time.h>
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#include <errno.h>
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#include <stdint.h>
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#include "syscall.h"
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#include "libc.h"
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static int sc_clock_gettime(clockid_t clk, struct timespec *ts)
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{
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int r = __syscall(SYS_clock_gettime, clk, ts);
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if (!r) return r;
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if (r == -ENOSYS) {
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if (clk == CLOCK_REALTIME) {
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__syscall(SYS_gettimeofday, clk, ts, 0);
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ts->tv_nsec = (int)ts->tv_nsec * 1000;
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return 0;
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}
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r = -EINVAL;
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}
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errno = -r;
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return -1;
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}
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weak_alias(sc_clock_gettime, __vdso_clock_gettime);
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int (*__cgt)(clockid_t, struct timespec *) = __vdso_clock_gettime;
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int __clock_gettime(clockid_t clk, struct timespec *ts)
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{
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/* Conditional is to make this work prior to dynamic linking */
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return __cgt ? __cgt(clk, ts) : sc_clock_gettime(clk, ts);
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}
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weak_alias(__clock_gettime, clock_gettime);
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