* [PATCH] hppa/vdso: Add wrappers for vDSO functions
@ 2024-06-19 18:36 Helge Deller
0 siblings, 0 replies; only message in thread
From: Helge Deller @ 2024-06-19 18:36 UTC (permalink / raw)
To: libc-alpha, John David Anglin, carlos; +Cc: linux-parisc
The upcoming parisc (hppa) Linux kernel v6.11 will include basic vDSO
support for gettimeofday(), clock_gettime() and clock_gettime64()
syscalls for 32-bit userspace.
The patch below adds the necessary glue code for glibc.
Signed-off-by: Helge Deller <deller@gmx.de>
diff -up ./sysdeps/unix/sysv/linux/hppa/sysdep.h.org ./sysdeps/unix/sysv/linux/hppa/sysdep.h
--- ./sysdeps/unix/sysv/linux/hppa/sysdep.h.org 2024-06-15 20:20:58.992000000 +0000
+++ ./sysdeps/unix/sysv/linux/hppa/sysdep.h 2024-06-19 18:26:08.324000000 +0000
@@ -468,6 +468,16 @@ L(pre_end): ASM_LINE_SEP \
#define CLOB_ARGS_1 CLOB_ARGS_2, "%r25"
#define CLOB_ARGS_0 CLOB_ARGS_1, "%r26"
+#ifndef __LP64__
+# define VDSO_NAME "LINUX_6.11"
+# define VDSO_HASH 182951793
+
+/* List of system calls which are supported as vsyscalls. */
+# define HAVE_CLOCK_GETTIME_VSYSCALL "__vdso_clock_gettime"
+# define HAVE_CLOCK_GETTIME64_VSYSCALL "__vdso_clock_gettime64"
+# define HAVE_GETTIMEOFDAY_VSYSCALL "__vdso_gettimeofday"
+#endif /* __LP64__ */
+
#endif /* __ASSEMBLER__ */
#endif /* _LINUX_HPPA_SYSDEP_H */
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