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Update.
2004-12-14 Ulrich Drepper <drepper@redhat.com> * sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S: Add support for pid caching in nptl.
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@ -1,3 +1,8 @@
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2004-12-14 Ulrich Drepper <drepper@redhat.com>
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* sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S: Add support
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for pid caching in nptl.
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2004-10-18 Maciej W. Rozycki <macro@mips.com>
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* sysdeps/unix/sysv/linux/mips/bits/socket.h (__cmsg_nxthdr): Use
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@ -1,3 +1,11 @@
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2004-12-14 Ulrich Drepper <drepper@redhat.com>
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* sysdeps/powerpc/tcb-offsets.sym: Add TID.
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* sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S: New file.
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* tst-getpid1.c: If child crashes, report this first. Print which
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signal.
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2004-12-09 Ulrich Drepper <drepper@redhat.com>
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* init.c (__pthread_initialize_minimal_internal): Also unblock
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@ -12,3 +12,4 @@
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MULTIPLE_THREADS_OFFSET thread_offsetof (header.multiple_threads)
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#endif
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PID thread_offsetof (pid)
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TID thread_offsetof (tid)
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3
nptl/sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S
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3
nptl/sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S
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@ -0,0 +1,3 @@
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#define RESET_PID
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#include <tcb-offsets.h>
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#include <sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S>
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@ -23,6 +23,9 @@
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#include <bp-sym.h>
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#include <bp-asm.h>
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#define CLONE_VM 0x00000100
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#define CLONE_THREAD 0x00010000
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/* This is the only really unusual system call in PPC linux, but not
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because of any weirdness in the system call itself; because of
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all the freaky stuff we have to do to make the call useful. */
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@ -45,10 +48,13 @@ ENTRY (BP_SYM (__clone))
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beq- cr0,L(badargs)
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/* Set up stack frame for parent. */
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stdu r1,-80(r1)
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stdu r1,-88(r1)
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std r29,56(r1)
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std r30,64(r1)
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std r31,72(r1)
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#ifdef RESET_PID
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std r28,80(r1)
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#endif
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/* Set up stack frame for child. */
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clrrdi r4,r4,4
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@ -58,6 +64,9 @@ ENTRY (BP_SYM (__clone))
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/* Save fn, args, stack across syscall. */
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mr r29,r3 /* Function in r29. */
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mr r30,r4 /* Stack pointer in r30. */
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#ifdef RESET_PID
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mr r28,r5 /* Flags in r28. */
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#endif
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mr r31,r6 /* Argument in r31. */
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/* 'flags' argument is first parameter to clone syscall. (The other
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@ -81,6 +90,20 @@ ENTRY (BP_SYM (__clone))
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it adds a race condition if a signal is sent to a thread
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just after it is created (in the previous three instructions). */
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mr r1,r30
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#ifdef RESET_PID
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andis. r0,r28,1 /* This is & CLONE_THREAD */
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bne+ r0,L(oldpid)
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andi. r0,r28,CLONE_VM
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li r3,-1
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bne- r0,L(nomoregetpid)
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DO_CALL(SYS_ify(getpid))
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L(nomoregetpid):
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stw r3,TID(r13)
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stw r3,PID(r13)
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L(oldpid):
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#endif
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/* Call procedure. */
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ld r0,0(r29)
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ld r2,8(r29)
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@ -96,10 +119,13 @@ ENTRY (BP_SYM (__clone))
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L(parent):
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/* Parent. Restore registers & return. */
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#ifdef RESET_PID
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ld r28,88(r1)
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#endif
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ld r31,72(r1)
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ld r30,64(r1)
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ld r29,56(r1)
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addi r1,r1,80
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addi r1,r1,88
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bnslr+
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b JUMPTARGET(__syscall_error)
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