1992-05-15 13:31:19 +00:00
|
|
|
.define __begsig
|
1988-04-20 16:47:41 +00:00
|
|
|
.sect .text; .sect .rom; .sect .data
|
1992-05-15 13:31:19 +00:00
|
|
|
.extern __begsig
|
|
|
|
|
.extern __vectab, __M
|
1988-04-20 16:47:41 +00:00
|
|
|
mtype = 2 ! M+mtype = &M.m_type
|
|
|
|
|
.sect .text
|
1988-04-19 10:19:15 +00:00
|
|
|
_begsig:
|
1988-04-20 16:47:41 +00:00
|
|
|
push ax ! after interrupt, save all regs
|
1988-04-19 10:19:15 +00:00
|
|
|
push bx
|
|
|
|
|
push cx
|
|
|
|
|
push dx
|
|
|
|
|
push si
|
|
|
|
|
push di
|
|
|
|
|
push bp
|
|
|
|
|
push ds
|
|
|
|
|
push es
|
|
|
|
|
mov bx,sp
|
1988-04-20 16:47:41 +00:00
|
|
|
mov bx,18(bx) ! bx = signal number
|
|
|
|
|
mov ax,bx ! ax = signal number
|
|
|
|
|
dec bx ! vectab[0] is for sig 1
|
|
|
|
|
add bx,bx ! pointers are two bytes on 8088
|
1992-05-15 13:31:19 +00:00
|
|
|
mov bx,__vectab(bx) ! bx = address of routine to call
|
|
|
|
|
push (__M+mtype) ! push status of last system call
|
1988-04-20 16:47:41 +00:00
|
|
|
push ax ! func called with signal number as arg
|
1988-04-19 10:19:15 +00:00
|
|
|
call (bx)
|
|
|
|
|
back:
|
1988-04-20 16:47:41 +00:00
|
|
|
pop ax ! get signal number off stack
|
1992-05-15 13:31:19 +00:00
|
|
|
pop (__M+mtype) ! restore status of previous system call
|
1988-04-20 16:47:41 +00:00
|
|
|
pop es ! signal handling finished
|
1988-04-19 10:19:15 +00:00
|
|
|
pop ds
|
|
|
|
|
pop bp
|
|
|
|
|
pop di
|
|
|
|
|
pop si
|
|
|
|
|
pop dx
|
|
|
|
|
pop cx
|
|
|
|
|
pop bx
|
|
|
|
|
pop ax
|
1988-04-20 16:47:41 +00:00
|
|
|
pop (dummy) ! remove signal number from stack
|
1988-04-19 10:19:15 +00:00
|
|
|
iret
|
|
|
|
|
|
1988-04-20 16:47:41 +00:00
|
|
|
.sect .data
|
|
|
|
|
dummy: .data2 0
|
