272 lines
6.1 KiB
PHP
272 lines
6.1 KiB
PHP
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SRV_GETVERSION equ 0
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PORT_OPEN equ 1
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PORT_CLOSE equ 2
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PORT_RESET equ 3
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PORT_SETMODE equ 4
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PORT_GETMODE equ 5
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PORT_SETMCR equ 6
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PORT_GETMCR equ 7
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PORT_READ equ 8
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PORT_WRITE equ 9
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RATE_19200 equ 15
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LCR_8BIT equ 0x03
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MCR_OUT_2 equ 0x08
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io.handle equ esp
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io.code equ esp+4
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io.input equ esp+8
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io.inp_size equ esp+12
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io.output equ esp+16
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io.out_size equ esp+20
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; retval
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; ebx= service version
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; eax= error code
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; 0= no error
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; -1= common error
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align 4
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init_uart:
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mov eax, 68
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mov ebx, 16
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mov ecx, szUart
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int 0x40
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mov [Uart], eax
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test eax, eax
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jz .fail
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push 0 ;storage for version
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mov eax, esp
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xor ebx, ebx
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push 4 ;.out_size
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push eax ;.output
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push ebx ;.inp_size
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push ebx ;.input
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push SRV_GETVERSION ;.code
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push [Uart] ;.handle
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mov eax, 68
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mov ebx, 17
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mov ecx, esp
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int 0x40
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add esp, 24
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pop ebx ;version
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ret
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.fail:
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or eax, -1
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ret
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; param
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; eax= port
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;
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; retval
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; ebx= connection
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; eax= error code
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align 4
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uart_open:
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push 0 ;connection
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mov ebx, esp
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push eax ;port
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mov eax, esp
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push 4 ;.out_size
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push ebx ;.output
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push 4 ;.inp_size
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push eax ;.input
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push PORT_OPEN ;.code
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push [Uart] ;.handle
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mov eax, 68
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mov ebx, 17
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mov ecx, esp
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int 0x40
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add esp, 28 ;io_control+port
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pop ebx ;connection
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ret
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; param
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; eax= connection
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;
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; retval
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; eax= error code
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align 4
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uart_close:
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push eax ;connection
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mov eax, esp
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xor ebx, ebx
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push ebx ;.out_size
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push ebx ;.output
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push 4 ;.inp_size
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push eax ;.input
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push PORT_CLOSE ;.code
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push [Uart] ;.handle
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mov eax, 68
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mov ebx, 17
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mov ecx, esp ;io_contol
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int 0x40
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add esp, 24+4 ;io_control
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ret
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; param
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; eax= connection
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;
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; retval
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; eax= error code
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align 4
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uart_reset:
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push eax ;connection
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mov eax, esp
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xor ebx, ebx
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push ebx ;.out_size
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push ebx ;.output
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push 4 ;.inp_size
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push eax ;.input
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push PORT_RESET ;.code
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push [Uart] ;.handle
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mov eax, 68
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mov ebx, 17
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mov ecx, esp ;io_contol
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int 0x40
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add esp, 24+4 ;io_control
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ret
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; param
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; eax= connection
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; ebx= rate
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; ecx= mode
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;
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; retval
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; eax= error code
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align 4
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uart_setmode:
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push ecx ;mode
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push ebx ;rate
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push eax ;connection
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mov eax, esp
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xor ecx, ecx
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push ecx ;.out_size
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push ecx ;.output
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push 12 ;.inp_size
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push eax ;.input
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push PORT_SETMODE ;.code
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push [Uart] ;.handle
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mov eax, 68
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mov ebx, 17
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mov ecx, esp ;io_contol
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int 0x40
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add esp, 24+12 ;io_control
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ret
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; param
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; eax= connection
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; ebx= modem control value
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;
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; retval
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; eax= error code
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align 4
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uart_set_mcr:
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push ebx ;mcr
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push eax ;connection
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mov eax, esp
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xor ecx, ecx
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push ecx ;.out_size
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push ecx ;.output
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push 8 ;.inp_size
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push eax ;.input
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push PORT_SETMCR ;.code
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push [Uart] ;.handle
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mov eax, 68
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mov ebx, 17
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mov ecx, esp ;io_contol
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int 0x40
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add esp, 24+8 ;io_control
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ret
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; param
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; eax= connection
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; ebx= buffer
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; ecx= size
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;
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; retval
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; ebx= bytes read
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; eax= error code
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align 4
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uart_read:
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push 0 ;bytes read
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push ecx ;size
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push ebx ;buffer
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push eax ;connection
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mov eax, esp
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lea ebx, [esp+12]
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push 4 ;.out_size
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push ebx ;.output
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push 12 ;.inp_size
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push eax ;.input
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push PORT_READ ;.code
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push [Uart] ;.handle
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mov eax, 68
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mov ebx, 17
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mov ecx, esp ;io_contol
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int 0x40
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add esp, 24+12 ;io_control
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pop ebx
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ret
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; param
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; eax= connection
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; ebx= buffer
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; ecx= size
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;
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; retval
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; eax= error code
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align 4
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uart_write:
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push ecx ;size
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push ebx ;buffer
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push eax ;connection
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mov eax, esp
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xor ecx, ecx
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push ecx ;.out_size
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push ecx ;.output
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push 12 ;.inp_size
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push eax ;.input
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push PORT_WRITE ;.code
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push [Uart] ;.handle
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mov eax, 68
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mov ebx, 17
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mov ecx, esp ;io_contol
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int 0x40
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add esp, 24+12 ;io_control
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ret
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align 4
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Uart rd 1
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szUart db 'UART',0
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