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70 lines
1.6 KiB
ObjectPascal
70 lines
1.6 KiB
ObjectPascal
{
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This file is part of the Free Pascal run time library.
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Copyright (c) 2021, 2022 by Free Pascal development team
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This file implements the startup code for WebAssembly programs that
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don't link to the C library.
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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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unit si_dll;
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{$if defined(FPC_WASM_BRANCHFUL_EXCEPTIONS) or defined(FPC_WASM_NATIVE_EXCEPTIONS)}
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{$MODESWITCH EXCEPTIONS}
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{$endif}
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interface
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procedure _initialize;
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implementation
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procedure PASCALMAIN; external 'PASCALMAIN';
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{$if defined(FPC_WASM_BRANCHFUL_EXCEPTIONS) or defined(FPC_WASM_NATIVE_EXCEPTIONS)}
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Procedure DoUnHandledException; external name 'FPC_DOUNHANDLEDEXCEPTION';
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procedure _initialize_pascal;
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begin
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try
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PASCALMAIN;
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except
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DoUnhandledException;
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end;
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end;
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{$else}
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procedure _initialize_pascal;
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begin
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PASCALMAIN;
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end;
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{$endif}
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procedure SetInitialHeapBlockStart(p: Pointer); external name 'FPC_WASM_SETINITIALHEAPBLOCKSTART';
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{ TODO: remove this, when calling SetInitialHeapBlockStart works directly from within inline asm }
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procedure SetInitialHeapBlockStart2(p: Pointer);
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begin
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SetInitialHeapBlockStart(p);
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end;
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procedure _initialize; assembler; nostackframe;
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asm
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global.get $__stack_pointer
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call $SetInitialHeapBlockStart2
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call $_initialize_pascal
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end;
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exports
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_initialize;
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end.
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