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2a051a7d1a
2003-02-07 Kaz Kojima <kkojima@rr.iij4u.or.jp> * elf/tls-macros.h: Add non-PIC TLS macros and fix clobber list for SH. * sysdeps/unix/sysv/linux/sh/brk.c: Add SYSCALL_INST_PAD after the trapa instruction. * sysdeps/unix/sysv/linux/sh/clone.S (__clone): Add additional parameters. * sysdeps/unix/sysv/linux/sh/sh4/sysdep.h: New file. (NEED_SYSCALL_INST_PAD): Define. * sysdeps/unix/sysv/linux/sh/sys/user.h (start_thread): Undef to avoid to use definition for the kernel. * sysdeps/unix/sysv/linux/sh/sysdep.h (SYSCALL_ERROR_HANDLER): Save and restore the frame pointer. (SYSCALL_INST_PAD): Define. (INLINE_SYSCALL): Make use of INTERNAL_SYSCALL. (INTERNAL_SYSCALL): Make use of ERR parameter. Add SYSCALL_INST_PAD after trapa instruction. (INTERNAL_SYSCALL_DECL, INTERNAL_SYSCALL_ERRNO, INTERNAL_SYSCALL_ERROR_P): Adjust accordingly.
49 lines
1.4 KiB
C
49 lines
1.4 KiB
C
/* brk system call for Linux/SH.
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Copyright (C) 1999, 2000, 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <errno.h>
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#include <unistd.h>
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#include <sysdep.h>
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/* This must be initialized data because commons can't have aliases. */
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void *__curbrk = 0;
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int
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__brk (void *addr)
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{
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void *newbrk;
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register long r3 asm ("%r3") = SYS_ify (brk);
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register long r4 asm ("%r4") = (long)addr;
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asm volatile ("trapa #0x11\n\t" SYSCALL_INST_PAD
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: "=z"(newbrk)
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: "r" (r3), "r" (r4));
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__curbrk = newbrk;
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if (newbrk < addr)
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{
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__set_errno (ENOMEM);
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return -1;
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}
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return 0;
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}
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weak_alias (__brk, brk)
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