This commit is contained in:
Mario Fetka
2026-05-23 17:59:43 +02:00
parent 7f4dd3b429
commit ed46e3aef9
3 changed files with 192 additions and 0 deletions

2
kern.h
View File

@@ -19,6 +19,8 @@ extern int KERN_CALL C32_CallVersion_Nios_Probe(void *outbuf);
extern int KERN_CALL Net_Call_VLM_Raw(UI ax, UI bx, UI cx, UI dx,
void *req, void *repl,
UI p1, UI p2, UI p3);
extern int KERN_CALL Net_Call_NWCVLMREQ(UI flags, void *regblk,
UI p1, UI p2, UI p3);
extern int KERN_CALL Net_Call_C(UI func, void *req, void *repl);
extern int KERN_CALL Net_Call_CX(UI func, UI bx, UI cx, UI dx,
void *req, void *repl);

View File

@@ -24,6 +24,7 @@ public _C32_LoadNios_Probe
public _C32_GetFunc_Probe
public _C32_CallVersion_Nios_Probe
public _Net_Call_VLM_Raw
public _Net_Call_NWCVLMREQ
_IPXinit proc far
push bp
@@ -592,4 +593,115 @@ c32ver_name db 'CLIENT32GetVersion',0
_C32_CallVersion_Nios_Probe endp
; int Net_Call_NWCVLMREQ(UI flags, void *regblk, UI p1, UI p2, UI p3)
;
; 16-bit wrapper that reproduces the DeveloperNet NWCVLMREQ register-block
; calling convention, but without using Novell globals.
;
; regblk layout, same as dvlmreq.o:
; +00 SI
; +02 DS
; +04 DI
; +06 ES
; +08 AX
; +0A BX
; +0C CX
; +0E DX
;
; It calls the VLM entry returned by INT 2F AX=7A20.
; Stack args are pushed as p3,p2,p1, exactly like NWCVLMREQ.
_Net_Call_NWCVLMREQ proc far
push bp
mov bp, sp
sub sp, 4
push ds
push si
push di
push es
mov ax, 7A20h
xor bx, bx
int 2Fh
or ax, ax
jz nwcvlm_found
mov ax, 88FFh
jmp short nwcvlm_done
nwcvlm_found:
; save VLM entry ES:BX in [bp-4]
mov [bp-4], bx
mov ax, es
mov [bp-2], ax
les bx, dword ptr [bp+8] ; regblk
; Match NWCVLMREQ defaulting:
; if !(flags & 2), set regblk.ES to current ES.
; We normally pass flags=2, so this is skipped.
test word ptr [bp+6], 2
jne nwcvlm_skip_es
mov ax, es
mov word ptr es:[bx+6], ax
nwcvlm_skip_es:
; if !(flags & 1), set regblk.DS to current DS.
test word ptr [bp+6], 1
jne nwcvlm_skip_ds
mov ax, ds
mov word ptr es:[bx+2], ax
nwcvlm_skip_ds:
; Load target registers from regblk.
mov ax, word ptr es:[bx+0Ah]
push ax ; target BX
mov ax, word ptr es:[bx+6]
push ax ; target ES
mov ax, word ptr es:[bx+8]
mov cx, word ptr es:[bx+0Ch]
mov dx, word ptr es:[bx+0Eh]
mov si, word ptr es:[bx+0]
mov di, word ptr es:[bx+4]
mov ds, word ptr es:[bx+2]
pop es
pop bx
push word ptr [bp+18] ; p3
push word ptr [bp+16] ; p2
push word ptr [bp+14] ; p1
call dword ptr [bp-4]
; Store registers back into regblk.
push bx
push es
les bx, dword ptr [bp+8]
mov word ptr es:[bx+8], ax
pop ax
mov word ptr es:[bx+6], ax
pop ax
mov word ptr es:[bx+0Ah], ax
mov word ptr es:[bx+0Ch], cx
mov word ptr es:[bx+0Eh], dx
mov word ptr es:[bx+0], si
mov word ptr es:[bx+4], di
mov word ptr es:[bx+2], ds
mov ax, word ptr es:[bx+8]
nwcvlm_done:
pop es
pop di
pop si
pop ds
mov sp, bp
pop bp
ret
_Net_Call_NWCVLMREQ endp
end

View File

@@ -1259,6 +1259,81 @@ static int tests_c32callver2(void)
}
static void tests_set_reg_word(uint8 *r, int off, UI val)
{
tests_put_word_lh(r + off, (uint16)val);
}
static UI tests_get_reg_word(uint8 *r, int off)
{
return (UI)(r[off] | ((UI)r[off + 1] << 8));
}
static void tests_dump_vlm_regs(char *title, uint8 *r)
{
fprintf(stdout, "%s SI=%04X DS=%04X DI=%04X ES=%04X AX=%04X BX=%04X CX=%04X DX=%04X\n",
title,
tests_get_reg_word(r, 0),
tests_get_reg_word(r, 2),
tests_get_reg_word(r, 4),
tests_get_reg_word(r, 6),
tests_get_reg_word(r, 8),
tests_get_reg_word(r, 10),
tests_get_reg_word(r, 12),
tests_get_reg_word(r, 14));
}
static int tests_c32mapconn(void)
{
int drive;
uint8 connid = 0;
uint8 dhandle = 0;
uint8 flags = 0;
uint8 regs[16];
uint8 reply[128];
int rc;
drive = tests_get_current_drive();
if (get_drive_info((uint8)drive, &connid, &dhandle, &flags)) {
fprintf(stdout, "get_drive_info failed\n");
return(1);
}
memset(regs, 0, sizeof(regs));
memset(reply, 0, sizeof(reply));
/*
* First half of DeveloperNet __C32MapConn16To32:
*
* reg.CX = conn16
* reg.ES:DI = reply buffer
* NWCVLMREQ(flags=2, regblk, p1=0Dh, p2=10h, p3=0)
*
* The reply buffer should contain the connection/server reference string
* that w95mconn.o later passes to NWCSCANCONNINFO.
*/
tests_set_reg_word(regs, 4, FP_OFF(reply)); /* DI */
tests_set_reg_word(regs, 6, FP_SEG(reply)); /* ES */
tests_set_reg_word(regs, 12, connid); /* CX */
fprintf(stdout, "TEST C32MAPCONN step1, __C32MapConn16To32 VLM probe\n");
fprintf(stdout, "drive=%c: connid=%u dhandle=%u flags=%02X\n",
'A' + drive, connid, dhandle, flags);
tests_dump_vlm_regs("REG in :", regs);
fprintf(stdout, "Call NWCVLMREQ flags=2 p1=000D p2=0010 p3=0000\n");
rc = Net_Call_NWCVLMREQ(2, regs, 0x000D, 0x0010, 0);
fprintf(stdout, "NWCVLMREQ rc=%04X\n", rc);
tests_dump_vlm_regs("REG out:", regs);
tests_dump_bytes("REPLY:", reply, 64);
fprintf(stdout, "REPLY text: %s\n", reply);
fprintf(stdout, "\nIf REPLY contains a server/conn string, next step is NWCSCANCONNINFO.\n");
return(0);
}
int func_tests(int argc, char *argv[], int mode)
{
if (argc >= 2) {
@@ -1277,6 +1352,9 @@ int func_tests(int argc, char *argv[], int mode)
if (tests_same_arg(argv[1], "C32CALLVER2"))
return tests_c32callver2();
if (tests_same_arg(argv[1], "C32MAPCONN"))
return tests_c32mapconn();
if (tests_same_arg(argv[1], "NWREQ87"))
return tests_nwreq87(argc, argv);