kolibrios/programs/develop/oberon07/Lib/Linux32/LINAPI.ob07

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(*
BSD 2-Clause License
Copyright (c) 2019-2020, Anton Krotov
All rights reserved.
*)
MODULE LINAPI;
IMPORT SYSTEM, API;
TYPE
TP* = API.TP;
SOFINI* = API.SOFINI;
VAR
argc*, envc*: INTEGER;
libc*, librt*: INTEGER;
stdout*,
stdin*,
stderr* : INTEGER;
malloc* : PROCEDURE [linux] (size: INTEGER): INTEGER;
free* : PROCEDURE [linux] (ptr: INTEGER);
exit* : PROCEDURE [linux] (code: INTEGER);
puts* : PROCEDURE [linux] (pStr: INTEGER);
fwrite*,
fread* : PROCEDURE [linux] (buffer, bytes, blocks, file: INTEGER): INTEGER;
fopen* : PROCEDURE [linux] (fname, fmode: INTEGER): INTEGER;
fclose* : PROCEDURE [linux] (file: INTEGER): INTEGER;
time* : PROCEDURE [linux] (ptr: INTEGER): INTEGER;
clock_gettime* : PROCEDURE [linux] (clock_id: INTEGER; VAR tp: TP): INTEGER;
PROCEDURE GetArg* (n: INTEGER; VAR s: ARRAY OF CHAR);
VAR
i, len, ptr: INTEGER;
c: CHAR;
BEGIN
i := 0;
len := LEN(s) - 1;
IF (0 <= n) & (n <= argc + envc) & (n # argc) & (len > 0) THEN
SYSTEM.GET(API.MainParam + (n + 1) * SYSTEM.SIZE(INTEGER), ptr);
REPEAT
SYSTEM.GET(ptr, c);
s[i] := c;
INC(i);
INC(ptr)
UNTIL (c = 0X) OR (i = len)
END;
s[i] := 0X
END GetArg;
PROCEDURE GetEnv* (n: INTEGER; VAR s: ARRAY OF CHAR);
BEGIN
IF (0 <= n) & (n < envc) THEN
GetArg(n + argc + 1, s)
ELSE
s[0] := 0X
END
END GetEnv;
PROCEDURE SetFini* (ProcFini: SOFINI);
BEGIN
API.SetFini(ProcFini)
END SetFini;
PROCEDURE init;
VAR
ptr: INTEGER;
BEGIN
IF API.MainParam # 0 THEN
envc := -1;
SYSTEM.GET(API.MainParam, argc);
REPEAT
SYSTEM.GET(API.MainParam + (envc + argc + 3) * SYSTEM.SIZE(INTEGER), ptr);
INC(envc)
UNTIL ptr = 0
ELSE
envc := 0;
argc := 0
END;
libc := API.libc;
stdout := API.stdout;
stdin := API.stdin;
stderr := API.stderr;
malloc := API.malloc;
free := API.free;
exit := API._exit;
puts := API.puts;
fwrite := API.fwrite;
fread := API.fread;
fopen := API.fopen;
fclose := API.fclose;
time := API.time;
librt := API.librt;
clock_gettime := API.clock_gettime
END init;
PROCEDURE [stdcall-] syscall* (eax, ebx, ecx, edx, esi, edi: INTEGER): INTEGER;
BEGIN
SYSTEM.CODE(
053H, (* push ebx *)
056H, (* push esi *)
057H, (* push edi *)
08BH, 045H, 008H, (* mov eax, dword [ebp + 8] *)
08BH, 05DH, 00CH, (* mov ebx, dword [ebp + 12] *)
08BH, 04DH, 010H, (* mov ecx, dword [ebp + 16] *)
08BH, 055H, 014H, (* mov edx, dword [ebp + 20] *)
08BH, 075H, 018H, (* mov esi, dword [ebp + 24] *)
08BH, 07DH, 01CH, (* mov edi, dword [ebp + 28] *)
0CDH, 080H, (* int 128 *)
05FH, (* pop edi *)
05EH, (* pop esi *)
05BH, (* pop ebx *)
0C9H, (* leave *)
0C2H, 018H, 000H (* ret 24 *)
)
RETURN 0
END syscall;
BEGIN
init
END LINAPI.