145 lines
3.4 KiB
Plaintext
145 lines
3.4 KiB
Plaintext
(*
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BSD 2-Clause License
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Copyright (c) 2019, Anton Krotov
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All rights reserved.
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*)
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MODULE API;
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IMPORT SYSTEM;
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CONST
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BASE_ADR = 08048000H;
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TYPE
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TP* = ARRAY 2 OF INTEGER;
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VAR
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eol*: ARRAY 2 OF CHAR;
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base*, MainParam*: INTEGER;
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libc*, librt*: INTEGER;
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dlopen* : PROCEDURE [linux] (filename, flag: INTEGER): INTEGER;
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dlsym* : PROCEDURE [linux] (handle, symbol: INTEGER): INTEGER;
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stdout*,
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stdin*,
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stderr* : INTEGER;
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malloc* : PROCEDURE [linux] (size: INTEGER): INTEGER;
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free* : PROCEDURE [linux] (ptr: INTEGER);
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_exit* : PROCEDURE [linux] (code: INTEGER);
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puts* : PROCEDURE [linux] (pStr: INTEGER);
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fwrite*,
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fread* : PROCEDURE [linux] (buffer, bytes, blocks, file: INTEGER): INTEGER;
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fopen* : PROCEDURE [linux] (fname, fmode: INTEGER): INTEGER;
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fclose* : PROCEDURE [linux] (file: INTEGER): INTEGER;
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clock_gettime* : PROCEDURE [linux] (clock_id: INTEGER; VAR tp: TP): INTEGER;
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time* : PROCEDURE [linux] (ptr: INTEGER): INTEGER;
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PROCEDURE putc* (c: CHAR);
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VAR
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res: INTEGER;
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BEGIN
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res := fwrite(SYSTEM.ADR(c), 1, 1, stdout)
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END putc;
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PROCEDURE DebugMsg* (lpText, lpCaption: INTEGER);
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BEGIN
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puts(lpCaption);
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puts(lpText)
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END DebugMsg;
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PROCEDURE _NEW* (size: INTEGER): INTEGER;
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VAR
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res, ptr, words: INTEGER;
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BEGIN
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res := malloc(size);
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IF res # 0 THEN
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ptr := res;
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words := size DIV SYSTEM.SIZE(INTEGER);
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WHILE words > 0 DO
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SYSTEM.PUT(ptr, 0);
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INC(ptr, SYSTEM.SIZE(INTEGER));
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DEC(words)
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END
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END
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RETURN res
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END _NEW;
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PROCEDURE _DISPOSE* (p: INTEGER): INTEGER;
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BEGIN
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free(p)
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RETURN 0
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END _DISPOSE;
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PROCEDURE GetProcAdr (lib: INTEGER; name: ARRAY OF CHAR; VarAdr: INTEGER);
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VAR
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sym: INTEGER;
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BEGIN
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sym := dlsym(lib, SYSTEM.ADR(name[0]));
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ASSERT(sym # 0);
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SYSTEM.PUT(VarAdr, sym)
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END GetProcAdr;
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PROCEDURE init* (sp, code: INTEGER);
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BEGIN
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SYSTEM.GET(code - 1000H - SYSTEM.SIZE(INTEGER) * 2, dlopen);
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SYSTEM.GET(code - 1000H - SYSTEM.SIZE(INTEGER), dlsym);
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MainParam := sp;
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base := BASE_ADR;
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eol := 0AX;
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libc := dlopen(SYSTEM.SADR("libc.so.6"), 1);
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GetProcAdr(libc, "malloc", SYSTEM.ADR(malloc));
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GetProcAdr(libc, "free", SYSTEM.ADR(free));
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GetProcAdr(libc, "exit", SYSTEM.ADR(_exit));
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GetProcAdr(libc, "stdout", SYSTEM.ADR(stdout));
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GetProcAdr(libc, "stdin", SYSTEM.ADR(stdin));
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GetProcAdr(libc, "stderr", SYSTEM.ADR(stderr));
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SYSTEM.GET(stdout - SYSTEM.SIZE(INTEGER), stdout);
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SYSTEM.GET(stdin - SYSTEM.SIZE(INTEGER), stdin);
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SYSTEM.GET(stderr - SYSTEM.SIZE(INTEGER), stderr);
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GetProcAdr(libc, "puts", SYSTEM.ADR(puts));
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GetProcAdr(libc, "fwrite", SYSTEM.ADR(fwrite));
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GetProcAdr(libc, "fread", SYSTEM.ADR(fread));
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GetProcAdr(libc, "fopen", SYSTEM.ADR(fopen));
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GetProcAdr(libc, "fclose", SYSTEM.ADR(fclose));
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GetProcAdr(libc, "time", SYSTEM.ADR(time));
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librt := dlopen(SYSTEM.SADR("librt.so.1"), 1);
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GetProcAdr(librt, "clock_gettime", SYSTEM.ADR(clock_gettime))
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END init;
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PROCEDURE exit* (code: INTEGER);
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BEGIN
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_exit(code)
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END exit;
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PROCEDURE exit_thread* (code: INTEGER);
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BEGIN
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_exit(code)
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END exit_thread;
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END API. |