/* Copyright (C) 1997, 2002, 2003, 2004, 2006, 2008, 2011, 2012 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Miguel de Icaza , 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, see . */ #ifndef _LINUX_SPARC32_SYSDEP_H #define _LINUX_SPARC32_SYSDEP_H 1 #include #ifdef IS_IN_rtld # include /* Defines RTLD_PRIVATE_ERRNO. */ #endif #include #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 #define PSEUDO(name, syscall_name, args) \ .text; \ ENTRY(name); \ LOADSYSCALL(syscall_name); \ ta 0x10; \ bcc 1f; \ nop; \ SYSCALL_ERROR_HANDLER \ 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) #ifndef PIC # define SYSCALL_ERROR_HANDLER \ mov %o7, %g1; \ call __syscall_error; \ mov %g1, %o7; #else # if RTLD_PRIVATE_ERRNO # ifdef HAVE_BINUTILS_GOTDATA # define SYSCALL_ERROR_HANDLER \ 0: SETUP_PIC_REG_LEAF(o2,g1) \ sethi %gdop_hix22(rtld_errno), %g1; \ xor %g1, %gdop_lox10(rtld_errno), %g1;\ ld [%o2 + %g1], %g1, %gdop(rtld_errno); \ st %o0, [%g1]; \ jmp %o7 + 8; \ mov -1, %o0; # else # define SYSCALL_ERROR_HANDLER \ 0: SETUP_PIC_REG_LEAF(o2,g1) \ sethi %hi(rtld_errno), %g1; \ or %g1, %lo(rtld_errno), %g1; \ ld [%o2 + %g1], %g1; \ st %o0, [%g1]; \ jmp %o7 + 8; \ mov -1, %o0; # endif # elif defined _LIBC_REENTRANT # ifndef NOT_IN_libc # define SYSCALL_ERROR_ERRNO __libc_errno # else # define SYSCALL_ERROR_ERRNO errno # endif # define SYSCALL_ERROR_HANDLER \ 0: SETUP_PIC_REG_LEAF(o2,g1) \ sethi %tie_hi22(SYSCALL_ERROR_ERRNO), %g1; \ add %g1, %tie_lo10(SYSCALL_ERROR_ERRNO), %g1; \ ld [%o2 + %g1], %g1, %tie_ld(SYSCALL_ERROR_ERRNO); \ st %o0, [%g7 + %g1]; \ jmp %o7 + 8; \ mov -1, %o0; # else # ifdef HAVE_BINUTILS_GOTDATA # define SYSCALL_ERROR_HANDLER \ 0: SETUP_PIC_REG_LEAF(o2,g1) \ sethi %gdop_hix22(errno), %g1;\ xor %g1, %gdop_lox10(errno), %g1;\ ld [%o2 + %g1], %g1, %gdop(errno);\ st %o0, [%g1]; \ jmp %o7 + 8; \ mov -1, %o0; # else # define SYSCALL_ERROR_HANDLER \ 0: SETUP_PIC_REG_LEAF(o2,g1) \ sethi %hi(errno), %g1; \ or %g1, %lo(errno), %g1; \ ld [%o2 + %g1], %g1; \ st %o0, [%g1]; \ jmp %o7 + 8; \ mov -1, %o0; # endif # endif /* _LIBC_REENTRANT */ #endif /* PIC */ #else /* __ASSEMBLER__ */ #define __SYSCALL_STRING \ "ta 0x10;" \ "bcc 1f;" \ " mov 0, %%g1;" \ "sub %%g0, %%o0, %%o0;" \ "mov 1, %%g1;" \ "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 #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 */