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authorUlrich Drepper <drepper@redhat.com>2003-07-14 21:16:43 +0000
committerUlrich Drepper <drepper@redhat.com>2003-07-14 21:16:43 +0000
commitb1b060c341b112e5face9a074e95fd366e8539bf (patch)
tree99e29cac2b00f4957a60f888c4c5605c59beb516 /sysdeps/unix/sysv
parent9291eb491f78ddea7d908a58a2b2ce68c63f31ba (diff)
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Update.
2003-07-14 Ulrich Drepper <drepper@redhat.com> * sysdeps/unix/sysv/linux/kernel-features.h: Define __ASSUME_TGKILL for Alpha appropriately.
Diffstat (limited to 'sysdeps/unix/sysv')
-rw-r--r--sysdeps/unix/sysv/linux/futimes.c2
-rw-r--r--sysdeps/unix/sysv/linux/kernel-features.h13
-rw-r--r--sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S22
-rw-r--r--sysdeps/unix/sysv/linux/utimes.c1
4 files changed, 31 insertions, 7 deletions
diff --git a/sysdeps/unix/sysv/linux/futimes.c b/sysdeps/unix/sysv/linux/futimes.c
index bb1f045df5..97a917318e 100644
--- a/sysdeps/unix/sysv/linux/futimes.c
+++ b/sysdeps/unix/sysv/linux/futimes.c
@@ -36,7 +36,7 @@ __futimes (int fd, const struct timeval tvp[2])
static const char selffd[] = "/proc/self/fd/";
char fname[sizeof (selffd) + 3 * sizeof (int)];
fname[sizeof (fname) - 1] = '\0';
- char *cp = _itoa_word (fd, fname + sizeof (fname) - 1, 10, 0);
+ char *cp = _itoa_word ((unsigned int) fd, fname + sizeof (fname) - 1, 10, 0);
cp = memcpy (cp - sizeof (selffd) + 1, selffd, sizeof (selffd) - 1);
#ifdef __NR_utimes
diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h
index 3dba1de24f..e78c959529 100644
--- a/sysdeps/unix/sysv/linux/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/kernel-features.h
@@ -234,6 +234,12 @@
# define __ASSUME_NEW_PRCTL_SYSCALL 1
#endif
+/* Starting with 2.4.21 the PowerPC32 clone syscall works as expected. */
+#if __LINUX_KERNEL_VERSION >= (132096+21) && defined __powerpc__ \
+ && !defined __powerpc64__
+# define __ASSUME_FIXED_CLONE_SYSCALL 1
+#endif
+
/* Starting with 2.4.21 PowerPC64 implements the new rt_sigreturn syscall.
The new rt_sigreturn takes an ucontext pointer allowing rt_sigreturn
to be used in the set/swapcontext implementation. */
@@ -341,8 +347,11 @@
# define __ASSUME_CORRECT_SI_PID 1
#endif
-/* The tgkill syscall was instroduced for i386 in 2.5.75. */
-#if __LINUX_KERNEL_VERSION >= 132427 && defined __i386__
+/* The tgkill syscall was instroduced for i386 in 2.5.75. For Alpha
+ it was introduced in 2.6.0-test1 which unfortunately cannot be
+ distinguished from 2.6.0. */
+#if (__LINUX_KERNEL_VERSION >= 132427 && defined __i386__) \
+ || (__LINUX_KERNEL_VERSION >= 132609 && defined __alpha__) \
# define __ASSUME_TGKILL 1
#endif
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S b/sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S
index 3bfd025984..11768bcbb7 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S
@@ -20,6 +20,7 @@
#include <sysdep.h>
#define _ERRNO_H 1
#include <bits/errno.h>
+#include <kernel-features.h>
#include <bp-sym.h>
#include <bp-asm.h>
@@ -44,7 +45,11 @@ ENTRY (BP_SYM (__clone))
/* Set up stack frame for parent. */
stwu r1,-32(r1)
+#ifndef __ASSUME_FIXED_CLONE_SYSCALL
stmw r29,16(r1)
+#else
+ stmw r30,16(r1)
+#endif
/* Set up stack frame for child. */
clrrwi r4,r4,4
@@ -52,8 +57,10 @@ ENTRY (BP_SYM (__clone))
stwu r0,-16(r4)
/* Save fn, args, stack across syscall. */
- mr r29,r3 /* Function in r29. */
- mr r30,r4 /* Stack pointer in r30. */
+ mr r30,r3 /* Function in r30. */
+#ifndef __ASSUME_FIXED_CLONE_SYSCALL
+ mr r29,r4 /* Stack pointer in r29. */
+#endif
mr r31,r6 /* Argument in r31. */
/* 'flags' argument is first parameter to clone syscall. (The other
@@ -73,13 +80,16 @@ ENTRY (BP_SYM (__clone))
crandc cr1*4+eq,cr1*4+eq,cr0*4+so
bne- cr1,L(parent) /* The '-' is to minimise the race. */
+#ifndef __ASSUME_FIXED_CLONE_SYSCALL
/* On at least mklinux DR3a5, clone() doesn't actually change
the stack pointer. I'm pretty sure this is a bug, because
it adds a race condition if a signal is sent to a thread
just after it is created (in the previous three instructions). */
- mr r1,r30
+ mr r1,r29
+#endif
+
/* Call procedure. */
- mtctr r29
+ mtctr r30
mr r3,r31
bctrl
/* Call _exit with result from procedure. */
@@ -87,7 +97,11 @@ ENTRY (BP_SYM (__clone))
L(parent):
/* Parent. Restore registers & return. */
+#ifndef __ASSUME_FIXED_CLONE_SYSCALL
lmw r29,16(r1)
+#else
+ lmw r30,16(r1)
+#endif
addi r1,r1,32
bnslr+
b JUMPTARGET(__syscall_error)
diff --git a/sysdeps/unix/sysv/linux/utimes.c b/sysdeps/unix/sysv/linux/utimes.c
index 57b82f9237..6e08c95397 100644
--- a/sysdeps/unix/sysv/linux/utimes.c
+++ b/sysdeps/unix/sysv/linux/utimes.c
@@ -20,6 +20,7 @@
#include <stddef.h>
#include <utime.h>
#include <sys/time.h>
+#include <sysdep.h>
#include "kernel-features.h"