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@@ -24,6 +24,7 @@
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*/
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#define _ERRNO_H 1
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+#include <features.h>
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#include <bits/errno.h>
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#include <sys/syscall.h>
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@@ -39,31 +40,42 @@
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#define CTID TLS+PTR_SIZE
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- .text
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- .globl __clone;
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- .type __clone,@function;
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- .align 1<<4;
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+.text
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+.type clone,@function;
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+.weak clone ; clone = __clone
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+
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+.type __clone,@function;
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+.globl __clone;
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__clone:
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/* Sanity check arguments. */
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movl $-EINVAL,%eax
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+
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+ test %ecx,%ecx
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+ call .Lclone_error
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+
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+ test %edx,%edx
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+ call .Lclone_error
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+
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movl FUNC(%esp),%ecx /* no NULL function pointers */
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#ifdef __PIC__
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- jecxz __syscall_error
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+ jecxz .Lclone_error
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#else
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testl %ecx,%ecx
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- jz __syscall_error
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+ jz .Lclone_error
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#endif
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movl STACK(%esp),%ecx /* no NULL stack pointers */
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#ifdef __PIC__
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- jecxz __syscall_error
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+ jecxz .Lclone_error
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#else
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testl %ecx,%ecx
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- jz __syscall_error
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+ jz .Lclone_error
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#endif
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- /* Insert the argument onto the new stack. */
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- subl $16,%ecx
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+ /* Insert the argument onto the new stack. Make sure the new
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+ thread is started with an alignment of (mod 16). */
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+ andl $0xfffffff0, %ecx
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+ subl $24,%ecx
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movl ARG(%esp),%eax /* no negative argument counts */
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movl %eax,12(%ecx)
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@@ -90,7 +102,7 @@ __clone:
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popl %ebx
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test %eax,%eax
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- jl __syscall_error
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+ jl .Lclone_error
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jz .Lthread_start
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.Lpseudo_end:
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@@ -109,7 +121,7 @@ __clone:
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movl $__NR_exit, %eax
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int $0x80
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-__syscall_error:
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+.Lclone_error:
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negl %eax
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pushl %eax
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#ifdef __PIC__
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@@ -129,4 +141,3 @@ __syscall_error:
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.Lsize:
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.size __clone,.Lsize-__clone
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-.weak clone ; clone = __clone
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Eric Andersen