diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/sh/sysdep.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/sh/sysdep.h | 360 |
1 files changed, 0 insertions, 360 deletions
diff --git a/sysdeps/unix/sysv/linux/sh/sysdep.h b/sysdeps/unix/sysv/linux/sh/sysdep.h deleted file mode 100644 index b76140cd90..0000000000 --- a/sysdeps/unix/sysv/linux/sh/sysdep.h +++ /dev/null @@ -1,360 +0,0 @@ -/* Copyright (C) 1992-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>, August 1995. - Changed by Kaz Kojima, <kkojima@rr.iij4u.or.jp>. - - 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_SH_SYSDEP_H -#define _LINUX_SH_SYSDEP_H 1 - -/* There is some commonality. */ -#include <sysdeps/unix/sysv/linux/sysdep.h> -#include <sysdeps/unix/sh/sysdep.h> -#include <tls.h> - -/* For Linux we can use the system call table in the header file - /usr/include/asm/unistd.h - of the kernel. But these symbols do not follow the SYS_* syntax - so we have to redefine the `SYS_ify' macro here. */ -#undef SYS_ify -#define SYS_ify(syscall_name) (__NR_##syscall_name) - - -#ifdef __ASSEMBLER__ - -/* Linux uses a negative return value to indicate syscall errors, - unlike most Unices, which use the condition codes' carry flag. - - Since version 2.1 the return value of a system call might be - negative even if the call succeeded. E.g., the `lseek' system call - might return a large offset. Therefore we must not anymore test - for < 0, but test for a real error by making sure the value in R0 - is a real error number. Linus said he will make sure the no syscall - returns a value in -1 .. -4095 as a valid result so we can savely - test with -4095. */ - -#define _IMM1 #-1 -#define _IMM12 #-12 -#undef PSEUDO -#define PSEUDO(name, syscall_name, args) \ - .text; \ - ENTRY (name); \ - DO_CALL (syscall_name, args); \ - mov r0,r1; \ - mov _IMM12,r2; \ - shad r2,r1; \ - not r1,r1; \ - tst r1,r1; \ - bf .Lpseudo_end; \ - SYSCALL_ERROR_HANDLER; \ - .Lpseudo_end: - -#undef PSEUDO_END -#define PSEUDO_END(name) \ - END (name) - -#undef PSEUDO_NOERRNO -#define PSEUDO_NOERRNO(name, syscall_name, args) \ - .text; \ - ENTRY (name); \ - DO_CALL (syscall_name, args) - -#undef PSEUDO_END_NOERRNO -#define PSEUDO_END_NOERRNO(name) \ - END (name) - -#define ret_NOERRNO ret - -#define PSEUDO_ERRVAL(name, syscall_name, args) \ - .text; \ - ENTRY (name); \ - DO_CALL (syscall_name, args); - -#undef PSEUDO_END_ERRVAL -#define PSEUDO_END_ERRVAL(name) \ - END (name) - -#define ret_ERRVAL ret - -#ifndef PIC -# define SYSCALL_ERROR_HANDLER \ - mov.l 0f,r1; \ - jmp @r1; \ - mov r0,r4; \ - .align 2; \ - 0: .long __syscall_error -#else -# if RTLD_PRIVATE_ERRNO -# define SYSCALL_ERROR_HANDLER \ - neg r0,r1; \ - mov r12,r2; \ - cfi_register (r12, r2); \ - mov.l 0f,r12; \ - mova 0f,r0; \ - add r0,r12; \ - mov.l 1f,r0; \ - mov.l r1,@(r0,r12); \ - mov r2,r12; \ - cfi_restore (r12); \ - bra .Lpseudo_end; \ - mov _IMM1,r0; \ - .align 2; \ - 0: .long _GLOBAL_OFFSET_TABLE_; \ - 1: .long rtld_errno@GOTOFF - -# elif defined _LIBC_REENTRANT - -# if IS_IN (libc) -# define SYSCALL_ERROR_ERRNO __libc_errno -# else -# define SYSCALL_ERROR_ERRNO errno -# endif -# define SYSCALL_ERROR_HANDLER \ - neg r0,r1; \ - mov r12,r2; \ - cfi_register (r12, r2); \ - mov.l 0f,r12; \ - mova 0f,r0; \ - add r0,r12; \ - mov.l 1f,r0; \ - stc gbr, r4; \ - mov.l @(r0,r12),r0; \ - mov r2,r12; \ - cfi_restore (r12); \ - add r4,r0; \ - mov.l r1,@r0; \ - bra .Lpseudo_end; \ - mov _IMM1,r0; \ - .align 2; \ - 0: .long _GLOBAL_OFFSET_TABLE_; \ - 1: .long SYSCALL_ERROR_ERRNO@GOTTPOFF -# else -/* Store (-r0) into errno through the GOT. */ -# define SYSCALL_ERROR_HANDLER \ - neg r0,r1; \ - mov r12,r2; \ - cfi_register (r12, r2); \ - mov.l 0f,r12; \ - mova 0f,r0; \ - add r0,r12; \ - mov.l 1f,r0; \ - mov.l @(r0,r12),r0; \ - mov r2,r12; \ - cfi_restore (r12); \ - mov.l r1,@r0; \ - bra .Lpseudo_end; \ - mov _IMM1,r0; \ - .align 2; \ - 0: .long _GLOBAL_OFFSET_TABLE_; \ - 1: .long errno@GOT -# endif /* _LIBC_REENTRANT */ -#endif /* PIC */ - -# ifdef NEED_SYSCALL_INST_PAD -# define SYSCALL_INST_PAD \ - or r0,r0; or r0,r0; or r0,r0; or r0,r0; or r0,r0 -# else -# define SYSCALL_INST_PAD -# endif - -#define SYSCALL_INST0 trapa #0x10 -#define SYSCALL_INST1 trapa #0x11 -#define SYSCALL_INST2 trapa #0x12 -#define SYSCALL_INST3 trapa #0x13 -#define SYSCALL_INST4 trapa #0x14 -#define SYSCALL_INST5 mov.l @(0,r15),r0; trapa #0x15 -#define SYSCALL_INST6 mov.l @(0,r15),r0; mov.l @(4,r15),r1; trapa #0x16 - -#undef DO_CALL -#define DO_CALL(syscall_name, args) \ - mov.l 1f,r3; \ - SYSCALL_INST##args; \ - SYSCALL_INST_PAD; \ - bra 2f; \ - nop; \ - .align 2; \ - 1: .long SYS_ify (syscall_name); \ - 2: - -#else /* not __ASSEMBLER__ */ - -#define SYSCALL_INST_STR0 "trapa #0x10\n\t" -#define SYSCALL_INST_STR1 "trapa #0x11\n\t" -#define SYSCALL_INST_STR2 "trapa #0x12\n\t" -#define SYSCALL_INST_STR3 "trapa #0x13\n\t" -#define SYSCALL_INST_STR4 "trapa #0x14\n\t" -#define SYSCALL_INST_STR5 "trapa #0x15\n\t" -#define SYSCALL_INST_STR6 "trapa #0x16\n\t" - -# ifdef NEED_SYSCALL_INST_PAD -# define SYSCALL_INST_PAD "\ - or r0,r0; or r0,r0; or r0,r0; or r0,r0; or r0,r0" -# else -# define SYSCALL_INST_PAD -# endif - -#define ASMFMT_0 -#define ASMFMT_1 \ - , "r" (r4) -#define ASMFMT_2 \ - , "r" (r4), "r" (r5) -#define ASMFMT_3 \ - , "r" (r4), "r" (r5), "r" (r6) -#define ASMFMT_4 \ - , "r" (r4), "r" (r5), "r" (r6), "r" (r7) -#define ASMFMT_5 \ - , "r" (r4), "r" (r5), "r" (r6), "r" (r7), "0" (r0) -#define ASMFMT_6 \ - , "r" (r4), "r" (r5), "r" (r6), "r" (r7), "0" (r0), "r" (r1) -#define ASMFMT_7 \ - , "r" (r4), "r" (r5), "r" (r6), "r" (r7), "0" (r0), "r" (r1), "r" (r2) - -#define SUBSTITUTE_ARGS_0() -#define SUBSTITUTE_ARGS_1(arg1) \ - long int _arg1 = (long int) (arg1); \ - register long int r4 asm ("%r4") = (long int) (_arg1) -#define SUBSTITUTE_ARGS_2(arg1, arg2) \ - long int _arg1 = (long int) (arg1); \ - long int _arg2 = (long int) (arg2); \ - register long int r4 asm ("%r4") = (long int) (_arg1); \ - register long int r5 asm ("%r5") = (long int) (_arg2) -#define SUBSTITUTE_ARGS_3(arg1, arg2, arg3) \ - long int _arg1 = (long int) (arg1); \ - long int _arg2 = (long int) (arg2); \ - long int _arg3 = (long int) (arg3); \ - register long int r4 asm ("%r4") = (long int) (_arg1); \ - register long int r5 asm ("%r5") = (long int) (_arg2); \ - register long int r6 asm ("%r6") = (long int) (_arg3) -#define SUBSTITUTE_ARGS_4(arg1, arg2, arg3, arg4) \ - long int _arg1 = (long int) (arg1); \ - long int _arg2 = (long int) (arg2); \ - long int _arg3 = (long int) (arg3); \ - long int _arg4 = (long int) (arg4); \ - register long int r4 asm ("%r4") = (long int) (_arg1); \ - register long int r5 asm ("%r5") = (long int) (_arg2); \ - register long int r6 asm ("%r6") = (long int) (_arg3); \ - register long int r7 asm ("%r7") = (long int) (_arg4) -#define SUBSTITUTE_ARGS_5(arg1, arg2, arg3, arg4, arg5) \ - long int _arg1 = (long int) (arg1); \ - long int _arg2 = (long int) (arg2); \ - long int _arg3 = (long int) (arg3); \ - long int _arg4 = (long int) (arg4); \ - long int _arg5 = (long int) (arg5); \ - register long int r4 asm ("%r4") = (long int) (_arg1); \ - register long int r5 asm ("%r5") = (long int) (_arg2); \ - register long int r6 asm ("%r6") = (long int) (_arg3); \ - register long int r7 asm ("%r7") = (long int) (_arg4); \ - register long int r0 asm ("%r0") = (long int) (_arg5) -#define SUBSTITUTE_ARGS_6(arg1, arg2, arg3, arg4, arg5, arg6) \ - long int _arg1 = (long int) (arg1); \ - long int _arg2 = (long int) (arg2); \ - long int _arg3 = (long int) (arg3); \ - long int _arg4 = (long int) (arg4); \ - long int _arg5 = (long int) (arg5); \ - long int _arg6 = (long int) (arg6); \ - register long int r4 asm ("%r4") = (long int)(_arg1); \ - register long int r5 asm ("%r5") = (long int) (_arg2); \ - register long int r6 asm ("%r6") = (long int) (_arg3); \ - register long int r7 asm ("%r7") = (long int) (_arg4); \ - register long int r0 asm ("%r0") = (long int) (_arg5); \ - register long int r1 asm ("%r1") = (long int) (_arg6) -#define SUBSTITUTE_ARGS_7(arg1, arg2, arg3, arg4, arg5, arg6, arg7) \ - long int _arg1 = (long int) (arg1); \ - long int _arg2 = (long int) (arg2); \ - long int _arg3 = (long int) (arg3); \ - long int _arg4 = (long int) (arg4); \ - long int _arg5 = (long int) (arg5); \ - long int _arg6 = (long int) (arg6); \ - long int _arg7 = (long int) (arg7); \ - register long int r4 asm ("%r4") = (long int) (_arg1); \ - register long int r5 asm ("%r5") = (long int) (_arg2); \ - register long int r6 asm ("%r6") = (long int) (_arg3); \ - register long int r7 asm ("%r7") = (long int) (_arg4); \ - register long int r0 asm ("%r0") = (long int) (_arg5); \ - register long int r1 asm ("%r1") = (long int) (_arg6); \ - register long int r2 asm ("%r2") = (long int) (_arg7) - -#undef INLINE_SYSCALL -#define INLINE_SYSCALL(name, nr, args...) \ - ({ \ - unsigned int resultvar = INTERNAL_SYSCALL (name, , nr, args); \ - if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (resultvar, ), 0)) \ - { \ - __set_errno (INTERNAL_SYSCALL_ERRNO (resultvar, )); \ - resultvar = 0xffffffff; \ - } \ - (int) resultvar; }) - -#undef INTERNAL_SYSCALL -#define INTERNAL_SYSCALL(name, err, nr, args...) \ - ({ \ - unsigned long int resultvar; \ - register long int r3 asm ("%r3") = SYS_ify (name); \ - SUBSTITUTE_ARGS_##nr(args); \ - \ - asm volatile (SYSCALL_INST_STR##nr SYSCALL_INST_PAD \ - : "=z" (resultvar) \ - : "r" (r3) ASMFMT_##nr \ - : "memory", "t"); \ - \ - (int) resultvar; }) - -/* The _NCS variant allows non-constant syscall numbers. */ -#define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \ - ({ \ - unsigned long int resultvar; \ - register long int r3 asm ("%r3") = (name); \ - SUBSTITUTE_ARGS_##nr(args); \ - \ - asm volatile (SYSCALL_INST_STR##nr SYSCALL_INST_PAD \ - : "=z" (resultvar) \ - : "r" (r3) ASMFMT_##nr \ - : "memory", "t"); \ - \ - (int) resultvar; }) - -#undef INTERNAL_SYSCALL_DECL -#define INTERNAL_SYSCALL_DECL(err) do { } while (0) - -#undef INTERNAL_SYSCALL_ERROR_P -#define INTERNAL_SYSCALL_ERROR_P(val, err) \ - ((unsigned int) (val) >= 0xfffff001u) - -#undef INTERNAL_SYSCALL_ERRNO -#define INTERNAL_SYSCALL_ERRNO(val, err) (-(val)) - -#endif /* __ASSEMBLER__ */ - -/* Pointer mangling support. */ -#if IS_IN (rtld) -/* We cannot use the thread descriptor because in ld.so we use setjmp - earlier than the descriptor is initialized. Using a global variable - is too complicated here since we have no PC-relative addressing mode. */ -#else -# ifdef __ASSEMBLER__ -# define PTR_MANGLE(reg, tmp) \ - stc gbr,tmp; mov.l @(POINTER_GUARD,tmp),tmp; xor tmp,reg -# define PTR_MANGLE2(reg, tmp) xor tmp,reg -# define PTR_DEMANGLE(reg, tmp) PTR_MANGLE (reg, tmp) -# define PTR_DEMANGLE2(reg, tmp) PTR_MANGLE2 (reg, tmp) -# else -# define PTR_MANGLE(var) \ - (var) = (void *) ((uintptr_t) (var) ^ THREAD_GET_POINTER_GUARD ()) -# define PTR_DEMANGLE(var) PTR_MANGLE (var) -# endif -#endif - -#endif /* linux/sh/sysdep.h */ |