kolibrios/drivers/examples/oberon_drv/drv.ob07
Anton Krotov 33ec897c11 drivers: added oberon example
git-svn-id: svn://kolibrios.org@9849 a494cfbc-eb01-0410-851d-a64ba20cac60
2022-06-23 20:53:50 +00:00

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MODULE drv;
IMPORT SYSTEM, API;
TYPE
ioctl_t = RECORD
handle,
io_code,
input,
inp_size,
output,
out_size: INTEGER
END;
PROCEDURE [stdcall-, "core.dll", ""] RegService (name, adr: INTEGER): INTEGER;
PROCEDURE [stdcall] service_proc (my_ctl: ioctl_t): INTEGER;
VAR
a, b, res: INTEGER;
BEGIN
IF my_ctl.io_code = 0 THEN
SYSTEM.GET(my_ctl.input, a);
SYSTEM.GET(my_ctl.input + SYSTEM.SIZE(INTEGER), b);
SYSTEM.PUT(my_ctl.output, a + b);
res := 0
ELSE
res := -1
END
RETURN res
END service_proc;
PROCEDURE [stdcall-] entry (action: INTEGER; cmdline: INTEGER): INTEGER;
VAR
res: INTEGER;
BEGIN
IF action = 1 THEN
res := RegService(SYSTEM.SADR("test_drv"), SYSTEM.ADR(service_proc))
ELSE
res := 0
END
RETURN res
END entry;
BEGIN
entry(API.action, API.cmdline);
SYSTEM.CODE(
0C9H, (* leave *)
0C3H (* ret *)
)
END drv.