[PATCH v2] hppa/vdso: Add wrappers for vDSO functions

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The upcoming parisc (hppa) v6.11 Linux kernel will include vDSO
support for gettimeofday(), clock_gettime() and clock_gettime64()
syscalls for 32- and 64-bit userspace.
The patch below adds the necessary glue code for glibc.

Signed-off-by: Helge Deller <deller@xxxxxx>

Changes in v2:
- add vsyscalls for 64-bit too
 
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	2024-06-21 19:19:02.132000000 +0000
@@ -468,6 +468,18 @@ L(pre_end):					ASM_LINE_SEP	\
 #define CLOB_ARGS_1 CLOB_ARGS_2, "%r25"
 #define CLOB_ARGS_0 CLOB_ARGS_1, "%r26"
 
+#define VDSO_NAME	"LINUX_6.11"
+#define VDSO_HASH	182951793
+
+#ifdef __LP64__
+# define HAVE_CLOCK_GETTIME_VSYSCALL    "__vdso_clock_gettime"
+# define HAVE_GETTIMEOFDAY_VSYSCALL     "__vdso_gettimeofday"
+#else
+# 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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