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{
This file is part of the Free Pascal run time library.
Copyright (c) 1999-2004 Marco van de Voort
member of the Free Pascal development team.
The syscalls for the *BSD AMD64 rtl
See the file COPYING.FPC, included in this distribution,
for details about the copyright.
This program 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.
**********************************************************************}
{
Origin of this file: copied from linux/x86_64 dir, blended with the
freebsd x86 changes and checked against objdump of a
x86_64/freebsdprog
- jge directly behind the syscall to branch on non-error
- rcx is used as scratch reg (fpc/Linux-x86_64 uses edx)
- More 6 and 7 param dosyscall because of the __syscall problem
}
{$ASMMODE GAS}
function fpsysCall(sysnr:TSysParam):TSysResult; assembler;[public,alias:'FPC_DOSYS0'];
asm
movq sysnr,%rax { Syscall number -> rax. }
syscall { Do the system call. }
jnb .LSyscOK { branch to exit if ok, errorhandler otherwise}
movq %rax,%rdx
{$ifdef FPC_PIC}
movq fpc_threadvar_relocate_proc@GOTPCREL(%rip),%rax
movq (%rax),%rax
{$ifndef FPC_STATICRIPFIXED}
movq Errno@GOTPCREL(%rip),%r11
{$else}
leaq Errno(%rip),%r11
{$endif}
{$else FPC_PIC}
movq fpc_threadvar_relocate_proc,%rax
leaq Errno,%r11
{$endif FPC_PIC}
testq %rax,%rax
jne .LThread
movl %edx,8(%r11)
jmp .LNoThread
.LThread:
pushq %rdx
movq (%r11),%rdi
call *%rax
popq %rdx
movl %edx,(%rax)
.LNoThread:
movq $-1,%rax
.LSyscOK:
end;
function fpsysCall(sysnr,param1 : TSysParam):TSysResult; assembler;[public,alias:'FPC_DOSYS1'];
asm
movq sysnr,%rax { Syscall number -> rax. }
movq param1,%rdi { shift arg1 - arg1. }
syscall { Do the system call. }
jnb .LSyscOK { branch to exit if ok, errorhandler otherwise}
movq %rax,%rdx
{$ifdef FPC_PIC}
movq fpc_threadvar_relocate_proc@GOTPCREL(%rip),%rax
movq (%rax),%rax
{$ifndef FPC_STATICRIPFIXED}
movq Errno@GOTPCREL(%rip),%r11
{$else}
leaq Errno(%rip),%r11
{$endif}
{$else FPC_PIC}
movq fpc_threadvar_relocate_proc,%rax
leaq Errno,%r11
{$endif FPC_PIC}
testq %rax,%rax
jne .LThread
movl %edx,8(%r11)
jmp .LNoThread
.LThread:
pushq %rdx
movq (%r11),%rdi
call *%rax
popq %rdx
movl %edx,(%rax)
.LNoThread:
movq $-1,%rax
.LSyscOK:
end;
function fpsysCall(sysnr,param1,param2 : TSysParam):TSysResult; assembler;[public,alias:'FPC_DOSYS2'];
asm
movq sysnr,%rax { Syscall number -> rax. }
movq param1,%rdi { shift arg1 - arg2. }
movq param2,%rsi
syscall { Do the system call. }
jnb .LSyscOK { branch to exit if ok, errorhandler otherwise}
movq %rax,%rdx
{$ifdef FPC_PIC}
movq fpc_threadvar_relocate_proc@GOTPCREL(%rip),%rax
movq (%rax),%rax
{$ifndef FPC_STATICRIPFIXED}
movq Errno@GOTPCREL(%rip),%r11
{$else}
leaq Errno(%rip),%r11
{$endif}
{$else FPC_PIC}
movq fpc_threadvar_relocate_proc,%rax
leaq Errno,%r11
{$endif FPC_PIC}
testq %rax,%rax
jne .LThread
movl %edx,8(%r11)
jmp .LNoThread
.LThread:
pushq %rdx
movq (%r11),%rdi
call *%rax
popq %rdx
movl %edx,(%rax)
.LNoThread:
movq $-1,%rax
.LSyscOK:
end;
function fpsysCall(sysnr,param1,param2,param3:TSysParam):TSysResult; assembler;[public,alias:'FPC_DOSYS3'];
asm
movq sysnr,%rax { Syscall number -> rax. }
movq param1,%rdi { shift arg1 - arg3. }
movq param2,%rsi
movq param3,%rdx
syscall { Do the system call. }
jnb .LSyscOK { branch to exit if ok, errorhandler otherwise}
movq %rax,%rdx
{$ifdef FPC_PIC}
movq fpc_threadvar_relocate_proc@GOTPCREL(%rip),%rax
movq (%rax),%rax
{$ifndef FPC_STATICRIPFIXED}
movq Errno@GOTPCREL(%rip),%r11
{$else}
leaq Errno(%rip),%r11
{$endif}
{$else FPC_PIC}
movq fpc_threadvar_relocate_proc,%rax
leaq Errno,%r11
{$endif FPC_PIC}
testq %rax,%rax
jne .LThread
movl %edx,8(%r11)
jmp .LNoThread
.LThread:
pushq %rdx
movq (%r11),%rdi
call *%rax
popq %rdx
movl %edx,(%rax)
.LNoThread:
movq $-1,%rax
.LSyscOK:
end;
function fpsysCall(sysnr,param1,param2,param3,param4:TSysParam):TSysResult; assembler;[public,alias:'FPC_DOSYS4'];
asm
movq sysnr,%rax { Syscall number -> rax. }
movq param1,%rdi { shift arg1 - arg5. }
movq param2,%rsi
movq param3,%rdx
movq param4,%r10
syscall { Do the system call. }
jnb .LSyscOK { branch to exit if ok, errorhandler otherwise}
movq %rax,%rdx
{$ifdef FPC_PIC}
movq fpc_threadvar_relocate_proc@GOTPCREL(%rip),%rax
movq (%rax),%rax
{$ifndef FPC_STATICRIPFIXED}
movq Errno@GOTPCREL(%rip),%r11
{$else}
leaq Errno(%rip),%r11
{$endif}
{$else FPC_PIC}
movq fpc_threadvar_relocate_proc,%rax
leaq Errno,%r11
{$endif FPC_PIC}
testq %rax,%rax
jne .LThread
movl %edx,8(%r11)
jmp .LNoThread
.LThread:
pushq %rdx
movq (%r11),%rdi
call *%rax
popq %rdx
movl %edx,(%rax)
.LNoThread:
movq $-1,%rax
.LSyscOK:
end;
function fpsysCall(sysnr,param1,param2,param3,param4,param5 : TSysParam):TSysResult; assembler;[public,alias:'FPC_DOSYS5'];
asm
movq sysnr,%rax { Syscall number -> rax. }
movq param1,%rdi { shift arg1 - arg5. }
movq param2,%rsi
movq param3,%rdx
movq param4,%r10
movq param5,%r8
syscall { Do the system call. }
jnb .LSyscOK { branch to exit if ok, errorhandler otherwise}
movq %rax,%rdx
{$ifdef FPC_PIC}
movq fpc_threadvar_relocate_proc@GOTPCREL(%rip),%rax
movq (%rax),%rax
{$ifndef FPC_STATICRIPFIXED}
movq Errno@GOTPCREL(%rip),%r11
{$else}
leaq Errno(%rip),%r11
{$endif}
{$else FPC_PIC}
movq fpc_threadvar_relocate_proc,%rax
leaq Errno,%r11
{$endif FPC_PIC}
testq %rax,%rax
jne .LThread
movl %edx,8(%r11)
jmp .LNoThread
.LThread:
pushq %rdx
movq (%r11),%rdi
call *%rax
popq %rdx
movl %edx,(%rax)
.LNoThread:
movq $-1,%rax
.LSyscOK:
end;
function fpsysCall(sysnr,param1,param2,param3,param4,param5,param6 : TSysParam):TSysResult; assembler;[public,alias:'FPC_DOSYS6'];
asm
movq sysnr,%rax { Syscall number -> rax. }
movq param1,%rdi { shift arg1 - arg6. }
movq param2,%rsi
movq param3,%rdx
movq param4,%r10
movq param5,%r8
movq param6,%r9
syscall { Do the system call. }
jnb .LSyscOK { branch to exit if ok, errorhandler otherwise}
movq %rax,%rdx
{$ifdef FPC_PIC}
movq fpc_threadvar_relocate_proc@GOTPCREL(%rip),%rax
movq (%rax),%rax
{$ifndef FPC_STATICRIPFIXED}
movq Errno@GOTPCREL(%rip),%r11
{$else}
leaq Errno(%rip),%r11
{$endif}
{$else FPC_PIC}
movq fpc_threadvar_relocate_proc,%rax
leaq Errno,%r11
{$endif FPC_PIC}
testq %rax,%rax
jne .LThread
movl %edx,8(%r11)
jmp .LNoThread
.LThread:
pushq %rdx
movq (%r11),%rdi
call *%rax
popq %rdx
movl %edx,(%rax)
.LNoThread:
movq $-1,%rax
.LSyscOK:
end;
function fp_sysCall(sysnr,param1,param2,param3,param4,param5,param6,param7 : TSysParam):TSysResult; assembler;[public,alias:'FPC_DOSYS7'];
asm
subq $0x10,%rsp
movq sysnr,%rax { Syscall number -> rax. }
movq param1,%rdi { shift arg1 - arg6. }
movq param2,%rsi
movq param3,%rdx
movq param4,%r10
movq param5,%r8
movq param6,%r9
movq param7,%r11
movq %r11,8(%rsp)
syscall { Do the system call. }
jnb .LSyscOK { branch to exit if ok, errorhandler otherwise}
movq %rax,%rdx
{$ifdef FPC_PIC}
movq fpc_threadvar_relocate_proc@GOTPCREL(%rip),%rax
movq (%rax),%rax
{$ifndef FPC_STATICRIPFIXED}
movq Errno@GOTPCREL(%rip),%r11
{$else}
leaq Errno(%rip),%r11
{$endif}
{$else FPC_PIC}
movq fpc_threadvar_relocate_proc,%rax
leaq Errno,%r11
{$endif FPC_PIC}
testq %rax,%rax
jne .LThread
movl %edx,8(%r11)
jmp .LNoThread
.LThread:
pushq %rdx
movq (%r11),%rdi
call *%rax
popq %rdx
movl %edx,(%rax)
.LNoThread:
movq $-1,%rax
.LSyscOK:
addq $0x10,%rsp
end;
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