81 lines
1.8 KiB
ArmAsm
Executable file
81 lines
1.8 KiB
ArmAsm
Executable file
.sect .text; .sect .rom; .sect .data; .sect .bss
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.define __send, __receive, __sendrec
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! See ../h/com.h for C definitions
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SEND = 1
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RECEIVE = 2
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BOTH = 3
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NB_SEND = 1 + 16 ! SEND | 0xF0
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NB_RECEIVE = 2 + 16 ! RECEIVE | 0xF0
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SYSVEC = 33
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SRCDEST = 8
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MESSAGE = 12
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!*========================================================================*
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! _send and _receive *
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!*========================================================================*
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! _send(), _nb_send(), _receive(), _nb_receive(), and _sendrec() all
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! save ebp, but destroy eax and ecx.
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.define __send, __nb_send, __receive, __nb_receive, __sendrec
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.sect .text
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__send:
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push ebp
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mov ebp, esp
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push ebx
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mov eax, SRCDEST(ebp) ! eax = dest-src
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mov ebx, MESSAGE(ebp) ! ebx = message pointer
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mov ecx, SEND ! _send(dest, ptr)
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int SYSVEC ! trap to the kernel
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pop ebx
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pop ebp
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ret
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__nb_send:
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push ebp
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mov ebp, esp
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push ebx
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mov eax, SRCDEST(ebp) ! eax = dest-src
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mov ebx, MESSAGE(ebp) ! ebx = message pointer
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mov ecx, NB_SEND ! _nb_send(dest, ptr)
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int SYSVEC ! trap to the kernel
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pop ebx
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pop ebp
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ret
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__receive:
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push ebp
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mov ebp, esp
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push ebx
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mov eax, SRCDEST(ebp) ! eax = dest-src
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mov ebx, MESSAGE(ebp) ! ebx = message pointer
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mov ecx, RECEIVE ! _receive(src, ptr)
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int SYSVEC ! trap to the kernel
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pop ebx
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pop ebp
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ret
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__nb_receive:
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push ebp
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mov ebp, esp
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push ebx
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mov eax, SRCDEST(ebp) ! eax = dest-src
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mov ebx, MESSAGE(ebp) ! ebx = message pointer
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mov ecx, NB_RECEIVE ! _nb_receive(src, ptr)
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int SYSVEC ! trap to the kernel
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pop ebx
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pop ebp
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ret
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__sendrec:
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push ebp
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mov ebp, esp
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push ebx
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mov eax, SRCDEST(ebp) ! eax = dest-src
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mov ebx, MESSAGE(ebp) ! ebx = message pointer
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mov ecx, BOTH ! _sendrec(srcdest, ptr)
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int SYSVEC ! trap to the kernel
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pop ebx
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pop ebp
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ret
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