minix/lib/i386/rts/_ipc.s
Jorrit Herder 748b3dd434 Updates system library calls: interface changes (removed unused parameters).
Removed old notification trap: renamed alert() to notify() ... finally ;-)
2005-07-29 15:01:59 +00:00

105 lines
2.3 KiB
ArmAsm
Executable file

.sect .text; .sect .rom; .sect .data; .sect .bss
.define __echo, __notify, __send, __nb_send, __receive, __nb_receive, __sendrec
! See src/kernel/ipc.h for C definitions
SEND = 1
RECEIVE = 2
SENDREC = 3
NOTIFY = 4
ECHO = 8
NB_SEND = 1 + 16 ! flags 0x10 to prevent blocking
NB_RECEIVE = 2 + 16 ! flags 0x10 to prevent blocking
SYSVEC = 33 ! trap to kernel
SRC_DST = 8 ! source/ destination process
ECHO_MESS = 8 ! doesn't have SRC_DST
MESSAGE = 12 ! message pointer
!*========================================================================*
! IPC assembly routines *
!*========================================================================*
! all message passing routines save ebp, but destroy eax and ecx.
.define __echo, __notify, __send, __nb_send, __receive, __nb_receive, __sendrec
.sect .text
__send:
push ebp
mov ebp, esp
push ebx
mov eax, SRC_DST(ebp) ! eax = dest-src
mov ebx, MESSAGE(ebp) ! ebx = message pointer
mov ecx, SEND ! _send(dest, ptr)
int SYSVEC ! trap to the kernel
pop ebx
pop ebp
ret
__nb_send:
push ebp
mov ebp, esp
push ebx
mov eax, SRC_DST(ebp) ! eax = dest-src
mov ebx, MESSAGE(ebp) ! ebx = message pointer
mov ecx, NB_SEND ! _nb_send(dest, ptr)
int SYSVEC ! trap to the kernel
pop ebx
pop ebp
ret
__receive:
push ebp
mov ebp, esp
push ebx
mov eax, SRC_DST(ebp) ! eax = dest-src
mov ebx, MESSAGE(ebp) ! ebx = message pointer
mov ecx, RECEIVE ! _receive(src, ptr)
int SYSVEC ! trap to the kernel
pop ebx
pop ebp
ret
__nb_receive:
push ebp
mov ebp, esp
push ebx
mov eax, SRC_DST(ebp) ! eax = dest-src
mov ebx, MESSAGE(ebp) ! ebx = message pointer
mov ecx, NB_RECEIVE ! _nb_receive(src, ptr)
int SYSVEC ! trap to the kernel
pop ebx
pop ebp
ret
__sendrec:
push ebp
mov ebp, esp
push ebx
mov eax, SRC_DST(ebp) ! eax = dest-src
mov ebx, MESSAGE(ebp) ! ebx = message pointer
mov ecx, SENDREC ! _sendrec(srcdest, ptr)
int SYSVEC ! trap to the kernel
pop ebx
pop ebp
ret
__notify:
push ebp
mov ebp, esp
push ebx
mov eax, SRC_DST(ebp) ! ebx = destination
mov ecx, NOTIFY ! _notify(srcdst)
int SYSVEC ! trap to the kernel
pop ebx
pop ebp
ret
__echo:
push ebp
mov ebp, esp
push ebx
mov ebx, ECHO_MESS(ebp) ! ebx = message pointer
mov ecx, ECHO ! _echo(srcdest, ptr)
int SYSVEC ! trap to the kernel
pop ebx
pop ebp
ret