sysdeps/unix/sparc/sysdep.h

   1 /* Copyright (C) 1993, 1994, 1995, 1997, 2003, 2011, 2012
   2         Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <sysdeps/unix/sysdep.h>
  20 #include <sysdeps/sparc/sysdep.h>
  21
  22 #ifdef  __ASSEMBLER__
  23
  24 /* Since C identifiers are not normally prefixed with an underscore
  25    on this system, the asm identifier `syscall_error' intrudes on the
  26    C name space.  Make sure we use an innocuous name.  */
  27 #define syscall_error   C_SYMBOL_NAME(__syscall_error)
  28
  29 #ifdef PIC
  30 #define SETUP_PIC_REG(reg, tmp)                                         \
  31         .ifndef __sparc_get_pc_thunk.reg;                               \
  32         .section .text.__sparc_get_pc_thunk.reg,"axG",@progbits,__sparc_get_pc_thunk.reg,comdat; \
  33         .align   32;                                                    \
  34         .weak    __sparc_get_pc_thunk.reg;                              \
  35         .hidden  __sparc_get_pc_thunk.reg;                              \
  36         .type    __sparc_get_pc_thunk.reg, #function;                   \
  37 __sparc_get_pc_thunk.reg:                                               \
  38         jmp     %o7 + 8;                                                \
  39          add    %o7, %reg, %##reg;                                      \
  40         .previous;                                                      \
  41         .endif;                                                         \
  42         sethi   %hi(_GLOBAL_OFFSET_TABLE_-4), %##reg;                   \
  43         mov     %o7, %##tmp;                                            \
  44         call    __sparc_get_pc_thunk.reg;                               \
  45          or     %##reg, %lo(_GLOBAL_OFFSET_TABLE_+4), %##reg;           \
  46         mov     %##tmp, %o7;
  47 #endif
  48
  49 #define ENTRY(name)             \
  50   .global C_SYMBOL_NAME(name);  \
  51   .type name,@function;         \
  52   .align 4;                     \
  53   C_LABEL(name)
  54
  55
  56 #define PSEUDO(name, syscall_name, args)        \
  57   .global syscall_error;                        \
  58   ENTRY (name)                                  \
  59   mov SYS_ify(syscall_name), %g1;               \
  60   ta 0;                                         \
  61   bcc 1f;                                       \
  62   sethi %hi(syscall_error), %g1;                \
  63   jmp %g1 + %lo(syscall_error); nop;            \
  64 1:
  65
  66 #define PSEUDO_NOERRNO(name, syscall_name, args) \
  67   .global syscall_error;                        \
  68   ENTRY (name)                                  \
  69   mov SYS_ify(syscall_name), %g1;               \
  70   ta 0
  71
  72 #define PSEUDO_ERRVAL(name, syscall_name, args) \
  73   .global syscall_error;                        \
  74   ENTRY (name)                                  \
  75   mov SYS_ify(syscall_name), %g1;               \
  76   ta 0
  77
  78 #define ret             retl; nop
  79 #define ret_NOERRNO     retl; nop
  80 #define ret_ERRVAL      retl; nop
  81 #define r0              %o0
  82 #define r1              %o1
  83 #define MOVE(x,y)       mov x, y
  84
  85 #endif  /* __ASSEMBLER__ */