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authorDmitry Chestnykh <dm.chestnykh@gmail.com>2024-04-16 08:37:15 +0300
committerWaldemar Brodkorb <wbx@openadk.org>2024-04-18 14:52:32 +0200
commitf749cb5c4a258474e377ba3f6ed1165c5c4a08f7 (patch)
treeb49bf57f99d18abbb72cac87e170488ae8da2542 /ldso
parent3a36a3100af2ee1cca69345af83228757e8c55fe (diff)
Generalize vDSO code.
- Add macroses for vDSO functions names because in some architectures these names differ from the default ones. - Add header guards in dl-syscalls.h . Signed-off-by: Dmitry Chestnykh <dm.chestnykh@gmail.com>
Diffstat (limited to 'ldso')
-rw-r--r--ldso/ldso/arm/dl-syscalls.h8
-rwxr-xr-xldso/ldso/dl-vdso.c14
-rw-r--r--ldso/ldso/mips/dl-syscalls.h8
-rw-r--r--ldso/ldso/x86_64/dl-syscalls.h8
4 files changed, 32 insertions, 6 deletions
diff --git a/ldso/ldso/arm/dl-syscalls.h b/ldso/ldso/arm/dl-syscalls.h
index 5cbb94d30..5f6f7a883 100644
--- a/ldso/ldso/arm/dl-syscalls.h
+++ b/ldso/ldso/arm/dl-syscalls.h
@@ -1,5 +1,8 @@
/* stub for arch-specific syscall issues/specific implementations */
+#ifndef _DL_SYSCALLS_H
+#define _DL_SYSCALLS_H
+
#if defined(__VDSO_SUPPORT__) && !defined(UCLIBC_LDSO)
#include "../dl-vdso-calls.h"
@@ -19,4 +22,7 @@ static int __attribute__ ((used)) __arm_vdso_gettimeofday(struct timeval *tv, __
#define ARCH_VDSO_GETTIMEOFDAY(tv, tz) __arm_vdso_gettimeofday(tv, tz)
#define ARCH_VDSO_CLOCK_GETTIME(clock_id, tp) __arm_vdso_clock_gettime(clock_id, tp)
-#endif /* defined(__VDSO_SUPPORT__) && !defined(UCLIBC_LDSO) */ \ No newline at end of file
+#endif /* defined(__VDSO_SUPPORT__) && !defined(UCLIBC_LDSO) */
+
+#endif /* _DL_SYSCALLS_H */
+
diff --git a/ldso/ldso/dl-vdso.c b/ldso/ldso/dl-vdso.c
index c23fd8b72..196cbbb3b 100755
--- a/ldso/ldso/dl-vdso.c
+++ b/ldso/ldso/dl-vdso.c
@@ -3,6 +3,14 @@
#include <string.h>
#include "sys/auxv.h"
+#define __ARCH_VDSO_GETTIMEOFDAY_NAME "__vdso_gettimeofday"
+#define __ARCH_VDSO_CLOCK_GETTIME_NAME "__vdso_clock_gettime"
+
+#if defined(__UCLIBC_USE_TIME64__)
+#define __ARCH_VDSO_CLOCK_GETTIME64_NAME "__vdso_clock_gettime64"
+#endif
+
+/* Maybe override default vDSO functions names by arch-specific */
#include "ldso.h"
#include "generated/autoconf.h"
@@ -321,7 +329,7 @@ void load_vdso(void *sys_info_ehdr, char **envp ){
continue;
}
- if ( 0 == _dl_strcmp( name, "__vdso_gettimeofday" ) ){
+ if ( 0 == _dl_strcmp( name, __ARCH_VDSO_GETTIMEOFDAY_NAME ) ){
_dl__vdso_gettimeofday = func_addr;
#ifdef __SUPPORT_LD_DEBUG__
if ( _dl_debug_vdso != 0 ){
@@ -330,7 +338,7 @@ void load_vdso(void *sys_info_ehdr, char **envp ){
#endif
continue;
}
- if ( 0 == _dl_strcmp( name, "__vdso_clock_gettime" ) ){
+ if ( 0 == _dl_strcmp( name, __ARCH_VDSO_CLOCK_GETTIME_NAME ) ){
_dl__vdso_clock_gettime = func_addr;
#ifdef __SUPPORT_LD_DEBUG__
if ( _dl_debug_vdso != 0 ){
@@ -341,7 +349,7 @@ void load_vdso(void *sys_info_ehdr, char **envp ){
}
#if defined(__UCLIBC_USE_TIME64__)
- if ( 0 == _dl_strcmp( name, "__vdso_clock_gettime64" ) ){
+ if ( 0 == _dl_strcmp( name, __ARCH_VDSO_CLOCK_GETTIME64_NAME ) ){
_dl__vdso_clock_gettime64 = func_addr;
#ifdef __SUPPORT_LD_DEBUG__
if ( _dl_debug_vdso != 0 ){
diff --git a/ldso/ldso/mips/dl-syscalls.h b/ldso/ldso/mips/dl-syscalls.h
index 46fd07bfa..d8407f17c 100644
--- a/ldso/ldso/mips/dl-syscalls.h
+++ b/ldso/ldso/mips/dl-syscalls.h
@@ -1,5 +1,8 @@
/* stub for arch-specific syscall issues/specific implementations */
+#ifndef _DL_SYSCALLS_H
+#define _DL_SYSCALLS_H
+
#if defined(__VDSO_SUPPORT__) && !defined(UCLIBC_LDSO)
#include "../dl-vdso-calls.h"
@@ -19,4 +22,7 @@ static int __attribute__ ((used)) __mips_vdso_gettimeofday(struct timeval *tv, _
#define ARCH_VDSO_GETTIMEOFDAY(tv, tz) __mips_vdso_gettimeofday(tv, tz)
#define ARCH_VDSO_CLOCK_GETTIME(clock_id, tp) __mips_vdso_clock_gettime(clock_id, tp)
-#endif /* defined(__VDSO_SUPPORT__) && !defined(UCLIBC_LDSO) */ \ No newline at end of file
+#endif /* defined(__VDSO_SUPPORT__) && !defined(UCLIBC_LDSO) */
+
+#endif /* _DL_SYSCALLS_H */
+
diff --git a/ldso/ldso/x86_64/dl-syscalls.h b/ldso/ldso/x86_64/dl-syscalls.h
index 0ec7a7dbb..3f953aa83 100644
--- a/ldso/ldso/x86_64/dl-syscalls.h
+++ b/ldso/ldso/x86_64/dl-syscalls.h
@@ -1,5 +1,8 @@
/* stub for arch-specific syscall issues/specific implementations */
+#ifndef _DL_SYSCALLS_H
+#define _DL_SYSCALLS_H
+
#if defined(__VDSO_SUPPORT__) && !defined(UCLIBC_LDSO)
#include "../dl-vdso-calls.h"
@@ -19,4 +22,7 @@ static int __attribute__ ((used)) __x86_64_vdso_gettimeofday(struct timeval *tv,
#define ARCH_VDSO_GETTIMEOFDAY(tv, tz) __x86_64_vdso_gettimeofday(tv, tz)
#define ARCH_VDSO_CLOCK_GETTIME(clock_id, tp) __x86_64_vdso_clock_gettime(clock_id, tp)
-#endif /* defined(__VDSO_SUPPORT__) && !defined(UCLIBC_LDSO) */ \ No newline at end of file
+#endif /* defined(__VDSO_SUPPORT__) && !defined(UCLIBC_LDSO) */
+
+#endif /* _DL_SYSCALLS_H */
+