kolibrios/programs/develop/oberon07/Lib/Linux64/API.ob07

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(*
BSD 2-Clause License
Copyright (c) 2019-2020, Anton Krotov
All rights reserved.
*)
MODULE API;
IMPORT SYSTEM;
CONST
eol* = 0AX;
BIT_DEPTH* = 64;
RTLD_LAZY = 1;
TYPE
SOFINI = PROCEDURE;
VAR
MainParam*, libc*: INTEGER;
dlopen* : PROCEDURE [linux] (filename, flag: INTEGER): INTEGER;
dlsym* : PROCEDURE [linux] (handle, symbol: INTEGER): INTEGER;
exit*,
exit_thread* : PROCEDURE [linux] (code: INTEGER);
puts : PROCEDURE [linux] (pStr: INTEGER);
malloc : PROCEDURE [linux] (size: INTEGER): INTEGER;
free : PROCEDURE [linux] (ptr: INTEGER);
fini: SOFINI;
PROCEDURE DebugMsg* (lpText, lpCaption: INTEGER);
BEGIN
puts(lpCaption);
puts(lpText)
END DebugMsg;
PROCEDURE _NEW* (size: INTEGER): INTEGER;
VAR
res, ptr, words: INTEGER;
BEGIN
res := malloc(size);
IF res # 0 THEN
ptr := res;
words := size DIV SYSTEM.SIZE(INTEGER);
WHILE words > 0 DO
SYSTEM.PUT(ptr, 0);
INC(ptr, SYSTEM.SIZE(INTEGER));
DEC(words)
END
END
RETURN res
END _NEW;
PROCEDURE _DISPOSE* (p: INTEGER): INTEGER;
BEGIN
free(p)
RETURN 0
END _DISPOSE;
PROCEDURE GetSym (lib: INTEGER; name: ARRAY OF CHAR; VarAdr: INTEGER);
VAR
sym: INTEGER;
BEGIN
sym := dlsym(lib, SYSTEM.ADR(name[0]));
ASSERT(sym # 0);
SYSTEM.PUT(VarAdr, sym)
END GetSym;
PROCEDURE init* (sp, code: INTEGER);
BEGIN
fini := NIL;
SYSTEM.GET(code - 1000H - SYSTEM.SIZE(INTEGER) * 2, dlopen);
SYSTEM.GET(code - 1000H - SYSTEM.SIZE(INTEGER), dlsym);
MainParam := sp;
libc := dlopen(SYSTEM.SADR("libc.so.6"), RTLD_LAZY);
GetSym(libc, "exit", SYSTEM.ADR(exit_thread));
exit := exit_thread;
GetSym(libc, "puts", SYSTEM.ADR(puts));
GetSym(libc, "malloc", SYSTEM.ADR(malloc));
GetSym(libc, "free", SYSTEM.ADR(free));
END init;
PROCEDURE dllentry* (hinstDLL, fdwReason, lpvReserved: INTEGER): INTEGER;
RETURN 0
END dllentry;
PROCEDURE sofinit*;
BEGIN
IF fini # NIL THEN
fini
END
END sofinit;
PROCEDURE SetFini* (ProcFini: SOFINI);
BEGIN
fini := ProcFini
END SetFini;
END API.