| /* Copyright (C) 1997, 2002, 2003, 2004, 2006, 2008 |
| Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Miguel de Icaza <miguel@gnu.ai.mit.edu>, January 1997. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| #ifndef _LINUX_SPARC32_SYSDEP_H |
| #define _LINUX_SPARC32_SYSDEP_H 1 |
| |
| #include <sysdeps/unix/sparc/sysdep.h> |
| |
| #ifdef IS_IN_rtld |
| # include <dl-sysdep.h> /* Defines RTLD_PRIVATE_ERRNO. */ |
| #endif |
| #include <tls.h> |
| |
| #undef SYS_ify |
| #define SYS_ify(syscall_name) __NR_##syscall_name |
| |
| #ifdef __ASSEMBLER__ |
| |
| #define LOADSYSCALL(x) mov __NR_##x, %g1 |
| |
| /* Linux/SPARC uses a different trap number */ |
| #undef PSEUDO |
| #undef PSEUDO_NOERRNO |
| #undef PSEUDO_ERRVAL |
| #undef PSEUDO_END |
| #undef ENTRY |
| #undef END |
| #undef LOC |
| |
| #define ENTRY(name) \ |
| .align 4; \ |
| .global C_SYMBOL_NAME(name); \ |
| .type name, @function; \ |
| C_LABEL(name) \ |
| cfi_startproc; |
| |
| #define END(name) \ |
| cfi_endproc; \ |
| .size name, . - name |
| |
| #define LOC(name) .L##name |
| |
| /* If the offset to __syscall_error fits into a signed 22-bit |
| * immediate branch offset, the linker will relax the call into |
| * a normal branch. |
| */ |
| #define PSEUDO(name, syscall_name, args) \ |
| .text; \ |
| .globl __syscall_error; \ |
| ENTRY(name); \ |
| LOADSYSCALL(syscall_name); \ |
| ta 0x10; \ |
| bcc 1f; \ |
| mov %o7, %g1; \ |
| call __syscall_error; \ |
| mov %g1, %o7; \ |
| 1: |
| |
| #define PSEUDO_NOERRNO(name, syscall_name, args)\ |
| .text; \ |
| ENTRY(name); \ |
| LOADSYSCALL(syscall_name); \ |
| ta 0x10; |
| |
| #define PSEUDO_ERRVAL(name, syscall_name, args) \ |
| .text; \ |
| ENTRY(name); \ |
| LOADSYSCALL(syscall_name); \ |
| ta 0x10; |
| |
| #define PSEUDO_END(name) \ |
| END(name) |
| |
| #else /* __ASSEMBLER__ */ |
| |
| #if defined SHARED && defined DO_VERSIONING && defined PIC \ |
| && !defined NO_HIDDEN && !defined NOT_IN_libc |
| # define CALL_ERRNO_LOCATION "call __GI___errno_location;" |
| #else |
| # define CALL_ERRNO_LOCATION "call __errno_location;" |
| #endif |
| |
| #define __SYSCALL_STRING \ |
| "ta 0x10;" \ |
| "bcs 2f;" \ |
| " nop;" \ |
| "1:" \ |
| ".subsection 2;" \ |
| "2:" \ |
| "save %%sp, -192, %%sp;" \ |
| CALL_ERRNO_LOCATION \ |
| " nop;" \ |
| "st %%i0,[%%o0];" \ |
| "ba 1b;" \ |
| " restore %%g0, -1, %%o0;" \ |
| ".previous;" |
| |
| #define __CLONE_SYSCALL_STRING \ |
| "ta 0x10;" \ |
| "bcs 2f;" \ |
| " sub %%o1, 1, %%o1;" \ |
| "and %%o0, %%o1, %%o0;" \ |
| "1:" \ |
| ".subsection 2;" \ |
| "2:" \ |
| "save %%sp, -192, %%sp;" \ |
| CALL_ERRNO_LOCATION \ |
| " nop;" \ |
| "st %%i0, [%%o0];" \ |
| "ba 1b;" \ |
| " restore %%g0, -1, %%o0;" \ |
| ".previous;" |
| |
| #define __INTERNAL_SYSCALL_STRING \ |
| "ta 0x10;" \ |
| "bcs,a 1f;" \ |
| " sub %%g0, %%o0, %%o0;" \ |
| "1:" |
| |
| #define __SYSCALL_CLOBBERS \ |
| "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \ |
| "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \ |
| "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", \ |
| "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", \ |
| "cc", "memory" |
| |
| #include <sysdeps/unix/sysv/linux/sparc/sysdep.h> |
| |
| #endif /* __ASSEMBLER__ */ |
| |
| /* Pointer mangling support. */ |
| #if defined NOT_IN_libc && defined IS_IN_rtld |
| /* We cannot use the thread descriptor because in ld.so we use setjmp |
| earlier than the descriptor is initialized. */ |
| #else |
| # ifdef __ASSEMBLER__ |
| # define PTR_MANGLE(dreg, reg, tmpreg) \ |
| ld [%g7 + POINTER_GUARD], tmpreg; \ |
| xor reg, tmpreg, dreg |
| # define PTR_DEMANGLE(dreg, reg, tmpreg) PTR_MANGLE (dreg, reg, tmpreg) |
| # define PTR_MANGLE2(dreg, reg, tmpreg) \ |
| xor reg, tmpreg, dreg |
| # define PTR_DEMANGLE2(dreg, reg, tmpreg) PTR_MANGLE2 (dreg, reg, tmpreg) |
| # else |
| # define PTR_MANGLE(var) \ |
| (var) = (__typeof (var)) ((uintptr_t) (var) ^ THREAD_GET_POINTER_GUARD ()) |
| # define PTR_DEMANGLE(var) PTR_MANGLE (var) |
| # endif |
| #endif |
| |
| #endif /* linux/sparc/sysdep.h */ |