| /* Copyright (C) 1997-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Richard Henderson <richard@gnu.ai.mit.edu>, 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 |
| <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef _LINUX_SPARC64_SYSDEP_H |
| #define _LINUX_SPARC64_SYSDEP_H 1 |
| |
| #include <sysdeps/unix/sysv/linux/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 |
| |
| /* This is a kludge to make syscalls.list find these under the names |
| pread and pwrite, since some kernel headers define those names |
| and some define the *64 names for the same system calls. */ |
| #if !defined __NR_pread && defined __NR_pread64 |
| # define __NR_pread __NR_pread64 |
| #endif |
| #if !defined __NR_pwrite && defined __NR_pwrite64 |
| # define __NR_pwrite __NR_pwrite64 |
| #endif |
| |
| #ifdef __ASSEMBLER__ |
| |
| #define LOADSYSCALL(x) mov __NR_##x, %g1 |
| |
| #undef PSEUDO |
| #define PSEUDO(name, syscall_name, args) \ |
| .text; \ |
| ENTRY(name); \ |
| LOADSYSCALL(syscall_name); \ |
| ta 0x6d; \ |
| bcc,pt %xcc, 1f; \ |
| nop; \ |
| SYSCALL_ERROR_HANDLER \ |
| 1: |
| |
| #undef PSEUDO_NOERRNO |
| #define PSEUDO_NOERRNO(name, syscall_name, args)\ |
| .text; \ |
| ENTRY(name); \ |
| LOADSYSCALL(syscall_name); \ |
| ta 0x6d; |
| |
| #undef PSEUDO_ERRVAL |
| #define PSEUDO_ERRVAL(name, syscall_name, args) \ |
| .text; \ |
| ENTRY(name); \ |
| LOADSYSCALL(syscall_name); \ |
| ta 0x6d; |
| |
| #undef PSEUDO_END |
| #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 |
| # define SYSCALL_ERROR_HANDLER \ |
| 0: SETUP_PIC_REG_LEAF(o2,g1) \ |
| sethi %gdop_hix22(rtld_errno), %g1; \ |
| xor %g1, %gdop_lox10(rtld_errno), %g1;\ |
| ldx [%o2 + %g1], %g1, %gdop(rtld_errno); \ |
| st %o0, [%g1]; \ |
| jmp %o7 + 8; \ |
| mov -1, %o0; |
| # 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; \ |
| ldx [%o2 + %g1], %g1, %tie_ldx(SYSCALL_ERROR_ERRNO);\ |
| st %o0, [%g7 + %g1]; \ |
| jmp %o7 + 8; \ |
| mov -1, %o0; |
| # else |
| # define SYSCALL_ERROR_HANDLER \ |
| 0: SETUP_PIC_REG_LEAF(o2,g1) \ |
| sethi %gdop_hix22(errno), %g1;\ |
| xor %g1, %gdop_lox10(errno), %g1;\ |
| ldx [%o2 + %g1], %g1, %gdop(errno);\ |
| st %o0, [%g1]; \ |
| jmp %o7 + 8; \ |
| mov -1, %o0; |
| # endif /* _LIBC_REENTRANT */ |
| #endif /* PIC */ |
| |
| #else /* __ASSEMBLER__ */ |
| |
| #define __SYSCALL_STRING \ |
| "ta 0x6d;" \ |
| "bcc,pt %%xcc, 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", \ |
| "f32", "f34", "f36", "f38", "f40", "f42", "f44", "f46", \ |
| "f48", "f50", "f52", "f54", "f56", "f58", "f60", "f62", \ |
| "cc", "memory" |
| |
| #endif /* __ASSEMBLER__ */ |
| |
| /* This is the offset from the %sp to the backing store above the |
| register windows. So if you poke stack memory directly you add this. */ |
| #define STACK_BIAS 2047 |
| |
| /* 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) \ |
| ldx [%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/sparc64/sysdep.h */ |