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* moved legacy syscall to i386/
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marco
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fceb187d21
commit
13257d861c
218
rtl/linux/i386/syscallo.inc
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218
rtl/linux/i386/syscallo.inc
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{
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$Id$
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This file is part of the Free Pascal run time library.
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Copyright (c) 1999-2000 by Michael Van Canneyt,
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member of the Free Pascal development team.
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See the file COPYING.FPC, included in this distribution,
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for details about the copyright.
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This program 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.
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**********************************************************************}
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{No debugging for syslinux include !}
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{$IFDEF SYS_LINUX}
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{$UNDEF SYSCALL_DEBUG}
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{$ENDIF SYS_LINUX}
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{*****************************************************************************
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--- Main:The System Call Self ---
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*****************************************************************************}
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Procedure Do_SysCallspec( callnr:longint;var regs : SysCallregs );assembler;{$ifndef VER1_0}oldfpccall;{$endif}
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{
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This function puts the registers in place, does the call, and then
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copies back the registers as they are after the SysCall.
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}
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{$ifdef cpui386}
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{$define fpc_syscall_ok}
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asm
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{ load the registers... }
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movl 12(%ebp),%eax
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movl 4(%eax),%ebx
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movl 8(%eax),%ecx
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movl 12(%eax),%edx
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movl 16(%eax),%esi
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movl 20(%eax),%edi
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{ set the call number }
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movl 8(%ebp),%eax
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{ Go ! }
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int $0x80
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{ Put back the registers... }
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pushl %eax
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movl 12(%ebp),%eax
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movl %edi,20(%eax)
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movl %esi,16(%eax)
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movl %edx,12(%eax)
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movl %ecx,8(%eax)
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movl %ebx,4(%eax)
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popl %ebx
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movl %ebx,(%eax)
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end;
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{$endif cpui386}
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{$ifdef cpum68k}
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{$define fpc_syscall_ok}
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asm
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{ load the registers... }
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move.l 12(a6),a0
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move.l 4(a0),d1
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move.l 8(a0),d2
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move.l 12(a0),d3
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move.l 16(a0),d4
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move.l 20(a0),d5
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{ set the call number }
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move.l 8(a6),d0
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{ Go ! }
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trap #0
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{ Put back the registers... }
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move.l d0,-(sp)
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move.l 12(a6),a0
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move.l d5,20(a0)
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move.l d4,16(a0)
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move.l d3,12(a0)
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move.l d2,8(a0)
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move.l d1,4(a0)
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move.l (sp)+,d1
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move.l d1,(a0)
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end;
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{$endif cpum68k}
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{$ifdef cpupowerpc}
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{$define fpc_syscall_ok}
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asm
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{ load the registers... }
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lwz r5, 12(r4)
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lwz r6, 16(r4)
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lwz r7, 20(r4)
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mr r0, r3
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lwz r3, 4(r4)
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stw r4, regs
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lwz r4, 8(r4)
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{ Go ! }
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sc
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bns Lsyscallo_ok
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neg r3,r3
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Lsyscallo_ok:
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{ Put back the registers... }
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lwz r8, regs
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stw r3, 0(r8)
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stw r4, 4(r8)
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stw r5, 8(r8)
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stw r6, 12(r8)
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stw r7, 16(r8)
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end;
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{$endif cpupowerpc}
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{$ifdef cpusparc}
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{$define fpc_syscall_ok}
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asm
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{ we are using the callers register window }
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or %i0,%g0,%g1
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ld [%i1],%o0
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ld [%i1+4],%o1
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ld [%i1+8],%o2
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ld [%i1+12],%o3
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ld [%i1+16],%o4
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{ Go ! }
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ta 0x10
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{ Put back the registers... }
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st %o0,[%i1]
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st %o1,[%i1+4]
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st %o2,[%i1+8]
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st %o3,[%i1+12]
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st %o4,[%i1+16]
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end;
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{$endif cpupowerpc}
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{$ifndef fpc_syscall_ok}
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{$error Cannot decide which processor you have!}
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asm
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end;
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{$endif not fpc_syscall_ok}
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{$IFDEF SYSCALL_DEBUG}
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Const
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DoSysCallDebug : Boolean = False;
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var
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LastCnt,
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LastEax,
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LastCall : longint;
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DebugTxt : string[20];
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{$ENDIF}
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Function SysCall( callnr:longint;var regs : SysCallregs ):longint;
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{
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This function serves as an interface to do_SysCall.
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If the SysCall returned a negative number, it returns -1, and puts the
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SysCall result in errno. Otherwise, it returns the SysCall return value
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}
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begin
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do_SysCallspec(callnr,regs);
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if regs.reg1<0 then
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begin
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{$IFDEF SYSCALL_DEBUG}
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If DoSysCallDebug then
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debugtxt:=' syscall error: ';
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{$endif}
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fpseterrno(-regs.reg1);
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SysCall:=-1;
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end
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else
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begin
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{$IFDEF SYSCALL_DEBUG}
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if DoSysCallDebug then
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debugtxt:=' syscall returned: ';
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{$endif}
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SysCall:=regs.reg1;
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fpseterrno(0);
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end;
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{$IFDEF SYSCALL_DEBUG}
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if DoSysCallDebug then
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begin
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inc(lastcnt);
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if (callnr<>lastcall) or (regs.reg1<>lasteax) then
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begin
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if lastcnt>1 then
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writeln(sys_nr_txt[lastcall],debugtxt,lasteax,' (',lastcnt,'x)');
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lastcall:=callnr;
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lasteax:=regs.reg1;
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lastcnt:=0;
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writeln(sys_nr_txt[lastcall],debugtxt,lasteax);
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end;
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end;
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{$endif}
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end;
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{
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$Log$
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Revision 1.1 2003-10-30 16:16:49 marco
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* moved legacy syscall to i386/
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Revision 1.7 2003/10/29 19:45:44 peter
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* use oldfpccall because all registers are destroyed
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Revision 1.6 2003/09/14 20:15:01 marco
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* Unix reform stage two. Remove all calls from Unix that exist in Baseunix.
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Revision 1.5 2003/08/21 22:24:52 olle
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- removed parameter from fpc_iocheck
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Revision 1.4 2003/06/17 16:39:58 jonas
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* fixed old syscall handling for ppc
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Revision 1.3 2003/06/04 15:18:14 peter
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* compile fix for systhrds
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Revision 1.2 2003/04/22 17:07:55 florian
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* there where two SYSCALL1 procedures for the powerpc, fixed
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Revision 1.1 2002/11/11 21:40:26 marco
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* rename syscall.inc -> syscallo.inc
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Revision 1.1 2002/10/14 19:39:44 peter
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* syscall moved into seperate include
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}
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