libpthread/nptl/sysdeps/mips/sysdep.h

   1 /* Copyright (C) 1992, 1995, 1997, 1999, 2000, 2002, 2003, 2004
   2    Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Brendan Kehoe (brendan@zen.org).
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #include <sgidefs.h>
  22 #include <common/sysdep.h>
  23
  24 #ifdef __ASSEMBLER__
  25
  26 #include <regdef.h>
  27
  28 #define ENTRY(name) \
  29   .globl name;                                                                \
  30   .align 2;                                                                   \
  31   .ent name,0;                                                                \
  32   name##:
  33
  34 #undef END
  35 #define END(function)                                   \
  36                 .end    function;                       \
  37                 .size   function,.-function
  38
  39 #define ret     j ra ; nop
  40
  41 #undef PSEUDO_END
  42 #define PSEUDO_END(sym) .end sym; .size sym,.-sym
  43
  44 #define PSEUDO_NOERRNO(name, syscall_name, args)        \
  45   .align 2;                                             \
  46   ENTRY(name)                                           \
  47   .set noreorder;                                       \
  48   li v0, SYS_ify(syscall_name);                         \
  49   syscall
  50
  51 #undef PSEUDO_END_NOERRNO
  52 #define PSEUDO_END_NOERRNO(sym) .end sym; .size sym,.-sym
  53
  54 #define ret_NOERRNO ret
  55
  56 #define PSEUDO_ERRVAL(name, syscall_name, args) \
  57   .align 2;                                             \
  58   ENTRY(name)                                           \
  59   .set noreorder;                                       \
  60   li v0, SYS_ify(syscall_name);                         \
  61   syscall
  62
  63 #undef PSEUDO_END_ERRVAL
  64 #define PSEUDO_END_ERRVAL(sym) .end sym; .size sym,.-sym
  65
  66 #define ret_ERRVAL ret
  67
  68 #define r0      v0
  69 #define r1      v1
  70 /* The mips move insn is d,s.  */
  71 #define MOVE(x,y)       move y , x
  72
  73 #if _MIPS_SIM == _ABIO32
  74 # define L(label) $L ## label
  75 #else
  76 # define L(label) .L ## label
  77 #endif
  78
  79 /* Note that while it's better structurally, going back to call __syscall_error
  80    can make things confusing if you're debugging---it looks like it's jumping
  81    backwards into the previous fn.  */
  82 #ifdef __PIC__
  83 #define PSEUDO(name, syscall_name, args) \
  84   .align 2;                                                                   \
  85   99: la t9,__syscall_error;                                                  \
  86   jr t9;                                                                      \
  87   ENTRY(name)                                                                 \
  88   .set noreorder;                                                             \
  89   .cpload t9;                                                                 \
  90   li v0, SYS_ify(syscall_name);                                               \
  91   syscall;                                                                    \
  92   .set reorder;                                                               \
  93   bne a3, zero, 99b;                                                          \
  94 L(syse1):
  95 #else
  96 #define PSEUDO(name, syscall_name, args) \
  97   .set noreorder;                                                             \
  98   .align 2;                                                                   \
  99   99: j __syscall_error;                                                      \
 100   nop;                                                                        \
 101   ENTRY(name)                                                                 \
 102   .set noreorder;                                                             \
 103   li v0, SYS_ify(syscall_name);                                               \
 104   syscall;                                                                    \
 105   .set reorder;                                                               \
 106   bne a3, zero, 99b;                                                          \
 107 L(syse1):
 108 #endif
 109
 110 #endif