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Third stage for int2f callers: split int2f.asm functions, don't let them

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preserve as many registers, use pascal calling convention for the
"open" (but really: multiplex) function.


git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@892 6ac86273-5f31-0410-b378-82cca8765d1b
This commit is contained in:
Bart Oldeman 2004-04-21 00:53:45 +00:00
parent ebbd6b8336
commit 4dc4ae8be8
4 changed files with 104 additions and 148 deletions
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17
kernel/dosfns.c
View File

@ -233,7 +233,8 @@ long DosRWSft(int sft_idx, size_t n, void FAR * bp, int mode)
lpCurSft = s; lpCurSft = s;
current_filepos = s->sft_posit; /* needed for MSCDEX */ current_filepos = s->sft_posit; /* needed for MSCDEX */
dta = bp; dta = bp;
XferCount = (mode == XFR_READ ? remote_read : remote_write)(s, n, &err); XferCount = network_redirector_rw(mode == XFR_READ ? REM_READ : REM_WRITE,
s, n, &err);
dta = save_dta; dta = save_dta;
return err == SUCCESS ? (long)XferCount : err; return err == SUCCESS ? (long)XferCount : err;
} }
@ -546,22 +547,26 @@ long DosOpenSft(char FAR * fname, unsigned flags, unsigned attrib)
if (result & IS_NETWORK) if (result & IS_NETWORK)
{ {
int status; int status;
unsigned cmd;
if ((flags & (O_TRUNC | O_CREAT)) == O_CREAT) if ((flags & (O_TRUNC | O_CREAT)) == O_CREAT)
attrib |= 0x100; attrib |= 0x100;
lpCurSft = sftp; lpCurSft = sftp;
cmd = REM_CREATE;
if (!(flags & O_LEGACY)) if (!(flags & O_LEGACY))
{ {
extern UWORD ASM ext_open_mode, ASM ext_open_attrib, ASM ext_open_action; extern UWORD ASM ext_open_mode, ASM ext_open_attrib, ASM ext_open_action;
ext_open_mode = flags & 0x70ff; ext_open_mode = flags & 0x70ff;
ext_open_attrib = attrib & 0xff; ext_open_attrib = attrib & 0xff;
ext_open_action = ((flags & 0x0300) >> 8) | ((flags & O_CREAT) >> 6); ext_open_action = ((flags & 0x0300) >> 8) | ((flags & O_CREAT) >> 6);
status = remote_extopen(sftp, attrib); cmd = REM_EXTOC;
} }
else if (flags & O_CREAT) else if (!(flags & O_CREAT))
status = remote_creat(sftp, attrib); {
else cmd = REM_OPEN;
status = remote_open(sftp, (BYTE)flags); attrib = (BYTE)flags;
}
status = network_redirector_open(cmd, sftp, attrib);
if (status >= SUCCESS) if (status >= SUCCESS)
{ {
if (sftp->sft_count == 0) if (sftp->sft_count == 0)

197
kernel/int2f.asm
View File

@ -273,107 +273,64 @@ SHARE_LOCK_UNLOCK:
; sumtimes return data *ptr is the push stack word ; sumtimes return data *ptr is the push stack word
; ;
global NETWORK_REDIRECTOR_FP global _remote_printredir
NETWORK_REDIRECTOR_FP: _remote_printredir:
push bp push bp
mov bp, sp mov bp,sp
mov al, [bp+8] push si
pop bp push di
call call_int2f mov ax, 1125h
ret 6 mov dx, [bp+4]
push word [bp+6]
global _remote_read jmp short int2f_call
_remote_read: mov al, 08h
jmp short call_int2f
global _remote_write
_remote_write: mov al, 09h
jmp short call_int2f
global _remote_getfree
_remote_getfree:
mov al, 0ch
jmp short call_int2f
global _remote_setfattr global _remote_setfattr
_remote_setfattr: _remote_setfattr:
mov al, 0eh push bp
jmp short call_int2f mov bp,sp
push si
global _remote_open push di
_remote_open: mov ax, 110eh
mov al, 16h push word [bp+4]
jmp short call_int2f jmp short int2f_call
global _remote_creat
_remote_creat:
mov al, 17h
jmp short call_int2f
global _remote_doredirect
_remote_doredirect:
mov al, 1eh
jmp short call_int2f
global _remote_printset
_remote_printset:
mov al, 1fh
jmp short call_int2f
global _remote_lseek global _remote_lseek
_remote_lseek: _remote_lseek:
mov al, 21h
jmp short call_int2f
global _QRemote_Fn
_QRemote_Fn
mov al, 23h
jmp short call_int2f
global _remote_printredir
_remote_printredir:
mov al, 25h
jmp short call_int2f
global _remote_extopen
_remote_extopen:
mov al, 2eh
call_int2f:
mov ah, 11h
push bp push bp
mov bp,sp mov bp,sp
push es
push si push si
push di push di
push cx
push bx
cmp al, 0eh mov ax, 1121h ; 21h, Lseek from eof
je remote_setfattr les di, [bp+4]
mov dx, [bp+8]
mov cx, [bp+10]
; "fall through"
remote_getfattr:
clc ; set to succeed
int 2fh
jc no_clear_ax
jmp short no_neg_ax
;int ASMPASCAL network_redirector_open(unsigned cmd, void far *s, unsigned arg)
global NETWORK_REDIRECTOR_OPEN
NETWORK_REDIRECTOR_OPEN:
pop bx ; ret address
pop cx ; stack value (arg)
pop dx ; off s
pop es ; seg s
pop ax ; cmd (ax)
push bx ; ret address
call_int2f:
push bp
push si
push di
mov di, dx ; es:di -> s
cmp al, 0fh cmp al, 0fh
je remote_getfattr je remote_getfattr
cmp al, 1eh push cx ; arg
je print_doredir
cmp al, 1fh
je print_doredir
cmp al, 25h
je remote_printredir
les di, [bp+4]
cmp al, 08h
je remote_rw
cmp al, 09h
je remote_rw
cmp al, 0ch
je remote_getfree
cmp al, 21h ; 21h, Lseek from eof
je lseekeof
cmp al, 23h
je qremote_fn
int2f_call_push:
push word [bp+8] ; very fakey, HaHa ;)
int2f_call: int2f_call:
xor cx, cx ; set to succeed; clear carry and CX xor cx, cx ; set to succeed; clear carry and CX
int 2fh int 2fh
@ -386,31 +343,26 @@ clear_ax:
xchg ax, cx ; extended open -> status from CX in AX xchg ax, cx ; extended open -> status from CX in AX
; otherwise CX was set to zero above ; otherwise CX was set to zero above
no_neg_ax: no_neg_ax:
pop bx
pop cx
pop di pop di
pop si pop si
pop es
pop bp pop bp
ret ret
lseekeof: global _remote_doredirect
mov dx, [bp+8] _remote_doredirect:
mov cx, [bp+10] mov al, 1eh
; "fall through" jmp short print_doredir
remote_getfattr:
clc ; set to succeed
int 2fh
jc no_clear_ax
jmp short no_neg_ax
remote_setfattr:
push word [bp+4]
jmp short int2f_call
global _remote_printset
_remote_printset:
mov al, 1fh
print_doredir: print_doredir:
push bp
mov bp,sp
push si
push di
push ds push ds
mov ah, 11h
mov si,[bp+14] mov si,[bp+14]
les di,[bp+10] les di,[bp+10]
mov dx,[bp+8] mov dx,[bp+8]
@ -427,7 +379,14 @@ print_doredir:
xor cx, cx xor cx, cx
jmp short clear_ax jmp short clear_ax
remote_getfree: global _remote_getfree
_remote_getfree:
push bp
mov bp,sp
push si
push di
mov ax, 110ch
les di, [bp+4]
clc ; set to succeed clc ; set to succeed
int 2fh int 2fh
jc no_clear_ax jc no_clear_ax
@ -439,15 +398,15 @@ remote_getfree:
xor cx, cx xor cx, cx
jmp short clear_ax jmp short clear_ax
remote_printredir: global _QRemote_Fn
mov dx, [bp+4] _QRemote_Fn:
push word [bp+6] push bp
jmp short int2f_call mov bp,sp
push si
remote_rw: jmp short remote_rw1 push di
qremote_fn:
push ds push ds
mov ax, 1123h
les di, [bp+4]
lds si,[bp+8] lds si,[bp+8]
clc clc
int 2fh int 2fh
@ -457,13 +416,21 @@ qremote_fn:
xor cx, cx xor cx, cx
jmp short clear_ax jmp short clear_ax
remote_rw1: mov cx, [bp+8] global _network_redirector_rw
_network_redirector_rw:
push bp
mov bp, sp
push si
push di
mov ax, [bp+4]
les di, [bp+6]
mov cx, [bp+10]
clc ; set to succeed clc ; set to succeed
int 2fh int 2fh
jc int2f_carry jc int2f_carry
xor ax, ax xor ax, ax
int2f_carry: neg ax int2f_carry: neg ax
mov di, [bp+10] mov di, [bp+12]
mov [di], ax mov [di], ax
mov ax, cx mov ax, cx
jmp no_neg_ax jmp no_neg_ax
@ -471,7 +438,7 @@ int2f_carry: neg ax
global _remote_process_end global _remote_process_end
_remote_process_end: ; Terminate process _remote_process_end: ; Terminate process
mov ds, [_cu_psp] mov ds, [_cu_psp]
mov al, 22h mov ax, 1122h
call call_int2f call call_int2f
push ss push ss
pop ds pop ds

6
kernel/network.c
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@ -51,8 +51,12 @@ VOID set_machine_name(BYTE FAR * netname, UWORD name_num)
net_set_count++; net_set_count++;
} }
int network_redirector_fp(unsigned cmd, void far *s)
{
return network_redirector_open(cmd, s, 0);
}
int network_redirector(unsigned cmd) int network_redirector(unsigned cmd)
{ {
return network_redirector_fp(cmd, NULL); return network_redirector_fp(cmd, NULL);
} }

28
kernel/proto.h
View File

@ -380,40 +380,20 @@ COUNT truename(const char FAR * src, char * dest, COUNT t);
/* network.c */ /* network.c */
int network_redirector(unsigned cmd); int network_redirector(unsigned cmd);
int ASMPASCAL network_redirector_fp(unsigned cmd, void far *s); int network_redirector_fp(unsigned cmd, void far *s);
int ASMPASCAL network_redirector_open(unsigned cmd, void far *s, unsigned arg);
unsigned ASMCFUNC network_redirector_rw(unsigned cmd, void far *s,
unsigned n, int *err);
COUNT ASMCFUNC remote_doredirect(UWORD b, UCOUNT n, UWORD d, VOID FAR * s, COUNT ASMCFUNC remote_doredirect(UWORD b, UCOUNT n, UWORD d, VOID FAR * s,
UWORD i, VOID FAR * data); UWORD i, VOID FAR * data);
COUNT ASMCFUNC remote_printset(UWORD b, UCOUNT n, UWORD d, VOID FAR * s, COUNT ASMCFUNC remote_printset(UWORD b, UCOUNT n, UWORD d, VOID FAR * s,
UWORD i, VOID FAR * data); UWORD i, VOID FAR * data);
COUNT ASMCFUNC remote_process_end(VOID); COUNT ASMCFUNC remote_process_end(VOID);
COUNT ASMCFUNC remote_getfree(VOID FAR * s, VOID * d); COUNT ASMCFUNC remote_getfree(VOID FAR * s, VOID * d);
COUNT ASMCFUNC remote_open(sft FAR * s, COUNT mode);
int ASMCFUNC remote_extopen(sft FAR * s, unsigned attr);
LONG ASMCFUNC remote_lseek(sft FAR * s, LONG new_pos); LONG ASMCFUNC remote_lseek(sft FAR * s, LONG new_pos);
UCOUNT ASMCFUNC remote_read(sft FAR * s, UCOUNT n, COUNT * err);
UCOUNT ASMCFUNC remote_write(sft FAR * s, UCOUNT n, COUNT * err);
COUNT ASMCFUNC remote_creat(sft FAR * s, COUNT attr);
COUNT ASMCFUNC remote_setfattr(COUNT attr); COUNT ASMCFUNC remote_setfattr(COUNT attr);
COUNT ASMCFUNC remote_printredir(UCOUNT dx, UCOUNT ax); COUNT ASMCFUNC remote_printredir(UCOUNT dx, UCOUNT ax);
COUNT ASMCFUNC QRemote_Fn(char FAR * d, const char FAR * s); COUNT ASMCFUNC QRemote_Fn(char FAR * d, const char FAR * s);
#ifdef __WATCOMC__
/* bx, cx, and es not used or clobbered for all remote functions,
* except lock_unlock and process_end */
#pragma aux cdecl_axdx "_*" parm caller [] modify exact [ax dx]
#pragma aux (cdecl_axdx) remote_doredirect
#pragma aux (cdecl_axdx) remote_printset
#pragma aux (cdecl_axdx) remote_getfree
#pragma aux (cdecl_axdx) remote_open
#pragma aux (cdecl_axdx) remote_extopen
#pragma aux (cdecl_axdx) remote_lseek
#pragma aux (cdecl_axdx) remote_read
#pragma aux (cdecl_axdx) remote_write
#pragma aux (cdecl_axdx) remote_creat
#pragma aux (cdecl_axdx) remote_setfattr
#pragma aux (cdecl_axdx) remote_printredir
#pragma aux (cdecl_axdx) QRemote_Fn
#pragma aux (pascal) network_redirector_fp modify exact [ax dx]
#endif
UWORD get_machine_name(BYTE FAR * netname); UWORD get_machine_name(BYTE FAR * netname);
VOID set_machine_name(BYTE FAR * netname, UWORD name_num); VOID set_machine_name(BYTE FAR * netname, UWORD name_num);