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442 lines
8.6 KiB
ArmAsm
442 lines
8.6 KiB
ArmAsm
/* ==== syscall.S ============================================================
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* Copyright (c) 1990 The Regents of the University of California.
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* Copyright (c) 1995 Chris Provenzano, proven@mit.edu
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Description : Machine dependent syscalls for i386/i486/i586
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*
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*/
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#ifndef lint
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.text
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.asciz "syscall-i386-sco-3.2v5.S,v 1.2 1995/05/26 07:44:29 proven Exp";
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#endif
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#if defined(SYSLIBC_SCCS) && !defined(lint)
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.asciz "@(#)syscall.s 5.1 (Berkeley) 4/23/90"
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#endif /* SYSLIBC_SCCS and not lint */
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#include <sys/errno.h>
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#include <sys/syscall.h>
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#ifdef _SCO_ELF
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#define NAME(X) machdep_sys_##X
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#define GETADDR(X) \
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call 1f; \
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1: \
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popl %ebx; \
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addl $NAME(X)+[.-1b], %ebx
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#define END(X) 1: ; .type NAME(X),@function ; .size NAME(X),1b - NAME(X)
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#else
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#define NAME(X) _machdep_sys_##X
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#define END(X)
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#endif
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#ifdef __STDC__
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#define SYSCALL(x) \
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.globl NAME(x); \
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\
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NAME(x): \
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movl $(SYS_##x##), %eax; \
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lcall $7, $0; \
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jae 1f; \
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cmp $(ERESTART), %eax; \
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je NAME(x); \
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neg %eax; \
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1: \
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ret; \
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\
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END(x)
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#else
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#define SYSCALL(x) \
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.globl NAME(x); \
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\
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NAME(x): \
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\
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movl $(SYS_/**/x), %eax; \
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lcall $7, $0; \
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jb 1b; \
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ret; \
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END(x)
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#endif
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/*
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* Initial asm stuff for all functions.
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*/
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.text
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.align 2
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/* ==========================================================================
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* machdep_sys_fork()
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*/
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.globl NAME(fork);
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NAME(fork):;
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movl $(SYS_fork), %eax
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lcall $7, $0
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jae 1f
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neg %eax
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ret
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1:
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test %edx, %edx
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je 2f
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xor %eax, %eax
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2:
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ret;
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END(fork)
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/* ==========================================================================
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* NAME(getdents)
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*/
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.globl NAME(getdents);
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NAME(getdents):
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movl $(SYS_getdents), %eax;
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lcall $7, $0
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jae 1f
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neg %eax
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1:
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ret;
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END(getdents)
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/* ==========================================================================
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* NAME(fxstat)
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*/
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.globl NAME(fxstat);
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NAME(fxstat):;
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movl $(SYS_fxstat), %eax;
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lcall $7, $0
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jae 1f
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neg %eax;
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ret;
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1:
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xor %eax, %eax;
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ret;
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END(fxstat)
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/* ==========================================================================
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* NAME(signal)
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*/
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.globl NAME(signal);
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NAME(signal):;
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movl 4(%esp), %ecx
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movl $(SYS_signal),%eax
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#if 0
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call .L1
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.L1:
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popl %edx
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addl $(NAME(sigreturn)+[.-.L1]), %edx
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#else
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movl $NAME(sigreturn), %edx
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#endif
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lcall $7,$0
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jae 1f
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# movl %eax, 12(%esp)
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neg %eax
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ret
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1:
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# xor %eax, %eax
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# movl %eax, 12(%esp)
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ret
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END(signal)
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/* ==========================================================================
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* NAME(sigaction)
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*/
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.globl NAME(sigaction);
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NAME(sigaction):
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movl $(SYS_sigaction),%eax
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#if 0
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call .L2
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.L2:
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popl %edx
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addl $(NAME(sigreturn)+[.-.L2]), %edx
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#else
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movl $NAME(sigreturn), %edx
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#endif
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lcall $7, $0
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jb 1f
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xor %eax, %eax
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ret
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1:
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neg %eax
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ret
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END(sigaction)
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.globl NAME(sigreturn)
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NAME(sigreturn):
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addl $4,%esp
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lcall $0xf, $0
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nop
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nop
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END(sigreturn)
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/* ==========================================================================
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* NAME(waitpid)
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*/
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.globl NAME(waitpid);
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NAME(waitpid):
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.byte 0x9c
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popl %eax
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orl $0x8c4, %eax
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pushl %eax
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.byte 0x9d
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movl $(SYS_wait), %eax
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lcall $7, $0
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jae 2f
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cmpl $(ERESTART), %al
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je NAME(waitpid)
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neg %eax
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3:
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ret
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2:
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movl 8(%esp), %ecx
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test %ecx,%ecx
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je 3b
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mov %edx, (%ecx)
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ret
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END(waitpid)
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/* ==========================================================================
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* NAME(uname)
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*/
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.globl NAME(uname);
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NAME(uname):
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pushl $0
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pushl $0
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pushl 12(%esp)
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subl $4, %esp
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movl $(SYS_utssys), %eax
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.byte 0x9a; .long 0; .word 7;
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jb 1f
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addl $16, %esp
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ret
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1:
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addl $16, %esp
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neg %eax
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ret
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END(uname)
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/* ==========================================================================
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* machdep_sys_ftruncate
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*/
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SYSCALL(ftruncate)
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/* ==========================================================================
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* machdep_sys_ftime
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*/
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SYSCALL(ftime)
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/* ==========================================================================
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* machdep_sys_gettimeofday()
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*/
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SYSCALL(gettimeofday)
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/* ==========================================================================
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* machdep_sys_kill()
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*/
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SYSCALL(kill)
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/* ==========================================================================
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* pthread_sys_setitimer
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*/
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.globl NAME(setitimer);
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NAME(setitimer):;
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movl $(SYS_setitimer), %eax;
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lcall $7, $0
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jae 1f
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neg %eax
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ret
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1:
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xor %eax, %eax
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ret;
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END(setitimer)
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/* ==========================================================================
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* pthread_sys_sysconf
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*/
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.globl NAME(sysconf);
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NAME(sysconf):;
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movl $(SYS_sysconf), %eax;
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lcall $7, $0
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jae 1f
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neg %eax
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1:
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ret;
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END(sysconf)
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/* ==========================================================================
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* pthread_sys_sysi86()
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*/
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.globl NAME(sysi86);
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NAME(sysi86):;
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movl $(SYS_sysi86), %eax
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lcall $7, $0
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jae 1f
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neg %eax
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1:
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ret;
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END(sysi86)
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/* ==========================================================================
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* machdep_sys_brk()
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*/
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.globl NAME(brk);
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NAME(brk):;
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movl $(SYS_break), %eax
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lcall $7, $0
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jae 1f
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neg %eax
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ret
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1:
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xor %eax, %eax
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ret;
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END(brk)
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/* ==========================================================================
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* machdep_sys_pipe()
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*/
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.globl NAME(pipe);
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NAME(pipe):;
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movl $(SYS_pipe), %eax;
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lcall $7, $0
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jae 1f
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neg %eax
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ret
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1:
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movl 4(%esp), %ecx
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movl %eax, (%ecx)
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movl %edx, 4(%ecx)
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xor %eax, %eax
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ret;
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END(brk)
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/* ==========================================================================
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* machdep_sys_fcntl()
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*/
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.globl NAME(fcntl);
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NAME(fcntl):;
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movl $(SYS_fcntl), %eax
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lcall $7, $0
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jae 1f
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neg %eax
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1:
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ret
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END(fcntl)
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/* ==========================================================================
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* machdep_sys_select()
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*/
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.globl NAME(select);
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NAME(select):;
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movl $(SYS_select), %eax
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lcall $7, $0
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jae 1f
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cmp $(ERESTART), %eax
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jne 2f
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movl $(EINTR), %eax
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2:
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neg %eax
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1:
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ret
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END(select)
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/* ==========================================================================
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* setjmp()
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*/
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.globl setjmp;
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setjmp:
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movl 4(%esp),%eax
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movl %ebx,(%eax)
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movl %esi,4(%eax)
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movl %edi,8(%eax)
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movl %ebp,12(%eax)
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popl %edx
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movl %esp,16(%eax)
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movl %edx,20(%eax)
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subl %eax,%eax
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jmp *%edx
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1: ; .type setjmp,@function ; .size setjmp,1b - setjmp
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/* ==========================================================================
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* longjmp()
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*/
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.globl longjmp;
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longjmp:
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movl 4(%esp),%edx
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movl 8(%esp),%eax
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movl 0(%edx),%ebx
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movl 4(%edx),%esi
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movl 8(%edx),%edi
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movl 12(%edx),%ebp
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movl 16(%edx),%esp
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test %eax,%eax
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jne 1f
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inc %eax
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1:
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jmp *20(%edx)
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1: ; .type longjmp,@function ; .size longjmp,1b - longjmp
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