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876f963440
2000-10-26 Kazumoto Kojima <kkojima@rr.iij4u.or.jp> Yutaka Niibe <gniibe@chroot.org> * sysdeps/sh/dl-machine.h (elf_machine_rela): Handle in place relocation which is generated by new ld. * sysdeps/sh/elf/initfini.c (_init): Preseted __fpscr_values. (_fini): Delete an obsolete register prefix. * sysdeps/unix/sysv/linux/sh/Versions: Add __xstat64, __fxstat64, __lxstat64, alphasort64, glob64, readdir64, readdir64_r, scandir64 and versionsort64 as the 2.2-versioned symbols. * sysdeps/unix/sysv/linux/sh/bits/fcntl.h: New file. * sysdeps/unix/sysv/linux/sh/brk.c: Changes for the new system call calling convention of the kernel. * sysdeps/unix/sysv/linux/sh/pipe.S: Likewise. * sysdeps/unix/sysv/linux/sh/socket.S: Likewise. * sysdeps/unix/sysv/linux/sh/clone.S: Likewise. * sysdeps/unix/sysv/linux/sh/vfork.S: Likewise. * sysdeps/unix/sysv/linux/sh/sysdep.h: Likewise. * sysdeps/unix/sysv/linux/sh/fcntl.c: New file. * sysdeps/unix/sysv/linux/sh/lockf64.c: New file. * sysdeps/unix/sysv/linux/sh/sys/user.h: Include the kernel header file and delete the definitions of struct user and user_fp. * sysdeps/unix/sysv/linux/sh/syscall.S: New file. * sysdeps/unix/sysv/linux/sh/syscalls.list: Remove entries for s_ioctl, s_ipc, s_llseek, s_chown, s_fchown, s_lchown, s_execve, rt_sigaction, rt_sigpending, rt_sigprocmask, rt_sigqueueinfo, rt_sigsuspend, rt_sigtimedwait, s_getcwd, s_getdents, s_getgroups, s_getpriority, s_getegid, s_geteuid, s_getuid, getresgid, getresuid, s_getrlimit, s_poll, s_pread64, s_ptrace, s_pwrite64, s_reboot, s_setrlimit, s_sigaction, s_sigpending, s_sigprocmask, s_sigsuspend, s_setfsgid, s_setfsuid, s_setgid, s_setgroups, s_setregid, s_setresgid, s_setresuid, s_setreuid, s_setuid, s_sysctl, s_ugetrlimit, s_ustat, sys_fstat, sys_lstat, sys_mknod, sys_readv, sys_stat, sys_writev and syscall.
209 lines
6.6 KiB
C
209 lines
6.6 KiB
C
/* Copyright (C) 1992, 93, 95-99, 2000 Free Software Foundation,
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Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>, August 1995.
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Changed by Kaz Kojima, <kkojima@rr.iij4u.or.jp>.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef _LINUX_SH_SYSDEP_H
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#define _LINUX_SH_SYSDEP_H 1
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/* There is some commonality. */
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#include <sysdeps/unix/sh/sysdep.h>
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/* For Linux we can use the system call table in the header file
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/usr/include/asm/unistd.h
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of the kernel. But these symbols do not follow the SYS_* syntax
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so we have to redefine the `SYS_ify' macro here. */
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#undef SYS_ify
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#define SYS_ify(syscall_name) (__NR_##syscall_name)
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#ifdef __ASSEMBLER__
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/* Linux uses a negative return value to indicate syscall errors,
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unlike most Unices, which use the condition codes' carry flag.
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Since version 2.1 the return value of a system call might be
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negative even if the call succeeded. E.g., the `lseek' system call
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might return a large offset. Therefore we must not anymore test
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for < 0, but test for a real error by making sure the value in R0
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is a real error number. Linus said he will make sure the no syscall
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returns a value in -1 .. -4095 as a valid result so we can savely
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test with -4095. */
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#define _IMM12 #-12
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#undef PSEUDO
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#ifdef SHARED
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#define PSEUDO(name, syscall_name, args) \
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.text; \
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ENTRY (name); \
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DO_CALL (args, syscall_name); \
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mov r0,r1; \
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mov _IMM12,r2; \
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shad r2,r1; \
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not r1,r1; \
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tst r1,r1; \
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bf 1f; \
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mov r0,r4; \
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mov.l r12,@-r15; \
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sts.l pr,@-r15; \
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mov.l 0f,r12; \
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mova 0f,r0; \
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add r0,r12; \
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mov.l 2f,r1; \
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mova 2f,r0; \
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add r0,r1; \
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jsr @r1; \
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nop; \
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lds.l @r15+,pr; \
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rts; \
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mov.l @r15+,r12; \
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.align 2; \
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2: .long PLTJMP(C_SYMBOL_NAME(__syscall_error)); \
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0: .long _GLOBAL_OFFSET_TABLE_; \
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1:
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#else
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#define PSEUDO(name, syscall_name, args) \
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.text; \
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ENTRY (name); \
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DO_CALL (args, syscall_name); \
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mov r0,r1; \
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mov _IMM12,r2; \
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shad r2,r1; \
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not r1,r1; \
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tst r1,r1; \
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bf 1f; \
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mov.l 2f,r1; \
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jmp @r1; \
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mov r0, r4; \
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.align 2; \
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2: .long PLTJMP(C_SYMBOL_NAME(__syscall_error)); \
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1:
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#endif
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#undef PSEUDO_END
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#define PSEUDO_END(name) \
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SYSCALL_ERROR_HANDLER \
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END (name)
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#define SYSCALL_ERROR_HANDLER /* Nothing here; code in sysdep.S is used. */
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#define SYSCALL_INST0 trapa #0x10
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#define SYSCALL_INST1 trapa #0x11
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#define SYSCALL_INST2 trapa #0x12
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#define SYSCALL_INST3 trapa #0x13
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#define SYSCALL_INST4 trapa #0x14
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#define SYSCALL_INST5 mov.l @(0,r15),r0; trapa #0x15
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#define SYSCALL_INST6 mov.l @(0,r15),r0; mov.l @(4,r15),r1; trapa #0x16
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#undef DO_CALL
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#define DO_CALL(args, syscall_name) \
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mov.l 1f,r3; \
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SYSCALL_INST##args; \
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bra 2f; \
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nop; \
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.align 2; \
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1: .long SYS_ify (syscall_name); \
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2:
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#else /* not __ASSEMBLER__ */
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#define SYSCALL_INST_STR0 "trapa #0x10\n\t"
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#define SYSCALL_INST_STR1 "trapa #0x11\n\t"
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#define SYSCALL_INST_STR2 "trapa #0x12\n\t"
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#define SYSCALL_INST_STR3 "trapa #0x13\n\t"
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#define SYSCALL_INST_STR4 "trapa #0x14\n\t"
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#define SYSCALL_INST_STR5 "trapa #0x15\n\t"
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#define SYSCALL_INST_STR6 "trapa #0x16\n\t"
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#define ASMFMT_0
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#define ASMFMT_1 \
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, "r" (r4)
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#define ASMFMT_2 \
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, "r" (r4), "r" (r5)
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#define ASMFMT_3 \
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, "r" (r4), "r" (r5), "r" (r6)
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#define ASMFMT_4 \
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, "r" (r4), "r" (r5), "r" (r6), "r" (r7)
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#define ASMFMT_5 \
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, "r" (r4), "r" (r5), "r" (r6), "r" (r7), "0" (r0)
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#define ASMFMT_6 \
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, "r" (r4), "r" (r5), "r" (r6), "r" (r7), "0" (r0), "r" (r1)
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#define ASMFMT_7 \
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, "r" (r4), "r" (r5), "r" (r6), "r" (r7), "0" (r0), "r" (r1), "r" (r2)
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#define SUBSTITUTE_ARGS_0()
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#define SUBSTITUTE_ARGS_1(arg1) \
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register long r4 asm ("%r4") = (long)(arg1)
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#define SUBSTITUTE_ARGS_2(arg1, arg2) \
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register long r4 asm ("%r4") = (long)(arg1); \
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register long r5 asm ("%r5") = (long)(arg2)
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#define SUBSTITUTE_ARGS_3(arg1, arg2, arg3) \
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register long r4 asm ("%r4") = (long)(arg1); \
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register long r5 asm ("%r5") = (long)(arg2); \
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register long r6 asm ("%r6") = (long)(arg3)
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#define SUBSTITUTE_ARGS_4(arg1, arg2, arg3, arg4) \
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register long r4 asm ("%r4") = (long)(arg1); \
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register long r5 asm ("%r5") = (long)(arg2); \
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register long r6 asm ("%r6") = (long)(arg3); \
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register long r7 asm ("%r7") = (long)(arg4)
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#define SUBSTITUTE_ARGS_5(arg1, arg2, arg3, arg4, arg5) \
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register long r4 asm ("%r4") = (long)(arg1); \
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register long r5 asm ("%r5") = (long)(arg2); \
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register long r6 asm ("%r6") = (long)(arg3); \
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register long r7 asm ("%r7") = (long)(arg4); \
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register long r0 asm ("%r0") = (long)(arg5)
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#define SUBSTITUTE_ARGS_6(arg1, arg2, arg3, arg4, arg5, arg6) \
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register long r4 asm ("%r4") = (long)(arg1); \
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register long r5 asm ("%r5") = (long)(arg2); \
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register long r6 asm ("%r6") = (long)(arg3); \
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register long r7 asm ("%r7") = (long)(arg4); \
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register long r0 asm ("%r0") = (long)(arg5); \
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register long r1 asm ("%r1") = (long)(arg6)
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#define SUBSTITUTE_ARGS_7(arg1, arg2, arg3, arg4, arg5, arg6, arg7) \
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register long r4 asm ("%r4") = (long)(arg1); \
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register long r5 asm ("%r5") = (long)(arg2); \
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register long r6 asm ("%r6") = (long)(arg3); \
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register long r7 asm ("%r7") = (long)(arg4); \
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register long r0 asm ("%r0") = (long)(arg5) \
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register long r1 asm ("%r1") = (long)(arg6); \
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register long r2 asm ("%r2") = (long)(arg7)
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#undef INLINE_SYSCALL
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#define INLINE_SYSCALL(name, nr, args...) \
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({ \
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unsigned long resultvar; \
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register long r3 asm ("%r3") = SYS_ify (name); \
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SUBSTITUTE_ARGS_##nr(args); \
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\
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asm volatile (SYSCALL_INST_STR##nr \
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: "=z" (resultvar) \
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: "r" (r3) ASMFMT_##nr \
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: "memory"); \
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\
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if (resultvar >= 0xfffff001) \
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{ \
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__set_errno (-resultvar); \
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resultvar = 0xffffffff; \
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} \
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(int) resultvar; })
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#endif /* __ASSEMBLER__ */
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#endif /* linux/sh/sysdep.h */
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