sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h

   1 /* Copyright (C) 1997-2024 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #ifndef _LINUX_SPARC32_SYSDEP_H
  19 #define _LINUX_SPARC32_SYSDEP_H 1
  20
  21 #include <sysdeps/unix/sysv/linux/sparc/sysdep.h>
  22
  23 #if IS_IN (rtld)
  24 # include <dl-sysdep.h>         /* Defines RTLD_PRIVATE_ERRNO.  */
  25 #endif
  26 #include <tls.h>
  27
  28 #undef SYS_ify
  29 #define SYS_ify(syscall_name) __NR_##syscall_name
  30
  31 #ifdef __ASSEMBLER__
  32
  33 #define LOADSYSCALL(x) mov __NR_##x, %g1
  34
  35 #undef PSEUDO
  36 #define PSEUDO(name, syscall_name, args)        \
  37         .text;                                  \
  38 ENTRY(name);                                    \
  39         LOADSYSCALL(syscall_name);              \
  40         ta              0x10;                   \
  41         bcc             1f;                     \
  42          nop;                                   \
  43         SYSCALL_ERROR_HANDLER                   \
  44 1:
  45
  46 #undef PSEUDO_NOERRNO
  47 #define PSEUDO_NOERRNO(name, syscall_name, args)\
  48         .text;                                  \
  49 ENTRY(name);                                    \
  50         LOADSYSCALL(syscall_name);              \
  51         ta              0x10;
  52
  53 #undef PSEUDO_ERRVAL
  54 #define PSEUDO_ERRVAL(name, syscall_name, args) \
  55         .text;                                  \
  56 ENTRY(name);                                    \
  57         LOADSYSCALL(syscall_name);              \
  58         ta              0x10;
  59
  60 #undef PSEUDO_END
  61 #define PSEUDO_END(name)                        \
  62         END(name)
  63
  64 #ifndef PIC
  65 # define SYSCALL_ERROR_HANDLER                  \
  66         mov     %o7, %g1;                       \
  67         call    __syscall_error;                \
  68          mov    %g1, %o7;
  69 #else
  70 # if RTLD_PRIVATE_ERRNO
  71 #  define SYSCALL_ERROR_HANDLER                 \
  72 0:      SETUP_PIC_REG_LEAF(o2,g1)               \
  73         sethi   %gdop_hix22(rtld_errno), %g1;   \
  74         xor     %g1, %gdop_lox10(rtld_errno), %g1;\
  75         ld      [%o2 + %g1], %g1, %gdop(rtld_errno); \
  76         st      %o0, [%g1];                     \
  77         jmp     %o7 + 8;                        \
  78          mov    -1, %o0;
  79 # elif defined _LIBC_REENTRANT
  80
  81 #  if IS_IN (libc)
  82 #   define SYSCALL_ERROR_ERRNO __libc_errno
  83 #  else
  84 #   define SYSCALL_ERROR_ERRNO errno
  85 #  endif
  86 #  define SYSCALL_ERROR_HANDLER                                 \
  87 0:      SETUP_PIC_REG_LEAF(o2,g1)                               \
  88         sethi   %tie_hi22(SYSCALL_ERROR_ERRNO), %g1;            \
  89         add     %g1, %tie_lo10(SYSCALL_ERROR_ERRNO), %g1;       \
  90         ld      [%o2 + %g1], %g1, %tie_ld(SYSCALL_ERROR_ERRNO); \
  91         st      %o0, [%g7 + %g1];                               \
  92         jmp     %o7 + 8;                                        \
  93          mov    -1, %o0;
  94 # else
  95 #  define SYSCALL_ERROR_HANDLER         \
  96 0:      SETUP_PIC_REG_LEAF(o2,g1)       \
  97         sethi   %gdop_hix22(errno), %g1;\
  98         xor     %g1, %gdop_lox10(errno), %g1;\
  99         ld      [%o2 + %g1], %g1, %gdop(errno);\
 100         st      %o0, [%g1];             \
 101         jmp     %o7 + 8;                \
 102          mov    -1, %o0;
 103 # endif /* _LIBC_REENTRANT */
 104 #endif  /* PIC */
 105
 106
 107 #else  /* __ASSEMBLER__ */
 108
 109 #define __SYSCALL_STRING                                                \
 110         "ta     0x10;"                                                  \
 111         "bcc    1f;"                                                    \
 112         " nop;"                                                         \
 113         "sub    %%g0, %%o0, %%o0;"                                      \
 114         "1:"
 115
 116 #define __SYSCALL_CLOBBERS                                              \
 117         "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",                 \
 118         "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",           \
 119         "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",         \
 120         "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",         \
 121         "cc", "memory"
 122
 123 #undef HAVE_INTERNAL_BRK_ADDR_SYMBOL
 124 #define HAVE_INTERNAL_BRK_ADDR_SYMBOL 1
 125
 126 #endif  /* __ASSEMBLER__ */
 127
 128 #endif /* linux/sparc/sysdep.h */