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1769a73f0b
2003-10-12 Carlos O'Donell <carlos@baldric.uwo.ca> * sysdeps/hppa/sysdep.h: Undef JUMPTARGET before use. * sysdeps/unix/sysv/linux/hppa/sysdep.h: Define PSEUDO_ERRVAL, SYSCALL_ERROR_LABEL under all conditions, INTERNAL_SYSCALL_DECL, INTERNAL_SYSCALL_ERROR_P, INTERNAL_SYSCALL_ERRNO, INTERNAL_SYSCALL, and undef JUMPTARGET before use. [PIC]: Save pic register around syscall. * sysdeps/unix/sysv/linux/hppa/sysdep.c (syscall): Cleanup asm statment. 2003-10-13 Kaz Kojima <kkojima@rr.iij4u.or.jp> * sysdeps/unix/sysv/linux/sh/sysdep.h (DO_CALL): Add SYSCALL_INST_PAD after trapa instruction.
65 lines
2.1 KiB
C
65 lines
2.1 KiB
C
/* Copyright (C) 1997, 1998, 2001, 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 <sysdep.h>
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#include <errno.h>
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extern int __syscall_error(int err_no);
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extern int syscall (int sysnum, int arg0, int arg1, int arg2,
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int arg3, int arg4, int arg5);
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/* This routine is jumped to by all the syscall handlers, to stash
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an error number into errno. */
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int
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__syscall_error (int err_no)
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{
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__set_errno (err_no);
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return -1;
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}
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/* HPPA implements syscall() in 'C'; the assembler version would
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typically be in syscall.S. Also note that we have INLINE_SYSCALL,
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INTERNAL_SYSCALL, and all the generated pure assembly syscall wrappers.
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How often the function is used is unknown. */
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int
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syscall (int sysnum, int arg0, int arg1, int arg2, int arg3, int arg4,
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int arg5)
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{
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/* FIXME: Keep this matching INLINE_SYSCALL for hppa */
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long int __sys_res;
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{
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register unsigned long int __res asm("r28");
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LOAD_ARGS_6 (arg0, arg1, arg2, arg3, arg4, arg5)
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asm volatile (STW_ASM_PIC
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" ble 0x100(%%sr2, %%r0) \n"
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" copy %1, %%r20 \n"
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LDW_ASM_PIC
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: "=r" (__res)
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: "r" (sysnum) ASM_ARGS_6
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: CALL_CLOB_REGS CLOB_ARGS_6);
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__sys_res = __res;
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}
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if ((unsigned long int) __sys_res >= (unsigned long int) -4095)
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{
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__set_errno (-__sys_res);
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__sys_res = -1;
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}
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return __sys_res;
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}
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