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125 lines
3.0 KiB
PHP
125 lines
3.0 KiB
PHP
{
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This file is part of the Free Pascal run time library.
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Copyright (c) 2003 by Peter Vreman,
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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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{ ---------------------------------------------------------------------
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This include contains cpu-specific routines
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---------------------------------------------------------------------}
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var
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fpc_system_lock : byte;external name 'fpc_system_lock';
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function InterLockedDecrement (var Target: longint) : longint; assembler; nostackframe;
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asm
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{ usually, we shouldn't lock here so saving the stack frame for these extra intructions is
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worse the effort, especially while waiting :)
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}
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.LInterLockedDecrement1:
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sethi %hi(fpc_system_lock), %g1
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or %g1,%lo(fpc_system_lock), %g1
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ldstub [%g1],%g1
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cmp %g1,0
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bne .LInterLockedDecrement1
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nop
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ld [%o0],%g1
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sub %g1,1,%g1
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st %g1,[%o0]
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mov %g1,%o0
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{ unlock }
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sethi %hi(fpc_system_lock), %g1
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or %g1,%lo(fpc_system_lock), %g1
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stb %g0,[%g1]
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end;
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function InterLockedIncrement (var Target: longint) : longint; assembler; nostackframe;
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asm
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{ usually, we shouldn't lock here so saving the stack frame for these extra intructions is
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worse the effort, especially while waiting :)
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}
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.LInterLockedIncrement1:
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sethi %hi(fpc_system_lock), %g1
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or %g1,%lo(fpc_system_lock), %g1
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ldstub [%g1],%g1
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cmp %g1,0
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bne .LInterLockedIncrement1
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nop
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ld [%o0],%g1
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add %g1,1,%g1
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st %g1,[%o0]
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mov %g1,%o0
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{ unlock }
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sethi %hi(fpc_system_lock), %g1
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or %g1,%lo(fpc_system_lock), %g1
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stb %g0,[%g1]
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end;
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function InterLockedExchange (var Target: longint;Source : longint) : longint; assembler; nostackframe;
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asm
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{ usually, we shouldn't lock here so saving the stack frame for these extra intructions is
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worse the effort, especially while waiting :)
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}
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.LInterLockedExchange1:
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sethi %hi(fpc_system_lock), %g1
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or %g1,%lo(fpc_system_lock), %g1
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ldstub [%g1],%g1
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cmp %g1,0
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bne .LInterLockedExchange1
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nop
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ld [%o0],%g1
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st %o1,[%o0]
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mov %g1,%o0
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{ unlock }
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sethi %hi(fpc_system_lock), %g1
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or %g1,%lo(fpc_system_lock), %g1
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stb %g0,[%g1]
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end;
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function InterLockedExchangeAdd (var Target: longint;Source : longint) : longint; assembler; nostackframe;
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asm
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{ usually, we shouldn't lock here so saving the stack frame for these extra intructions is
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worse the effort, especially while waiting :)
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}
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.LInterLockedExchangeAdd1:
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sethi %hi(fpc_system_lock), %g1
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or %g1,%lo(fpc_system_lock), %g1
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ldstub [%g1],%g1
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cmp %g1,0
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bne .LInterLockedExchangeAdd1
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nop
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ld [%o0],%g1
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add %g1,%o1,%o1
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st %o1,[%o0]
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mov %g1,%o0
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{ unlock }
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sethi %hi(fpc_system_lock), %g1
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or %g1,%lo(fpc_system_lock), %g1
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stb %g0,[%g1]
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end;
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