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ser-go32.c: Rewrite so it runs under windows.
This commit is contained in:
Steve Chamberlain
parent
55f6c903f6
commit
aa48187bd3
@ -1,3 +1,16 @@
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Mon Jun 27 09:57:23 1994 Steve Chamberlain (sac@cirdan.cygnus.com)
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* ser-go32.c: Rewrite to run under windows.
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* ser-e7kpc.c: New file to support the E7000 with the PC ISA
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bus interface.
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* serial.c (serial_open): Notice device "pc".
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* remote-e7000.c: Fix copyright date.
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(expect): Compare \n and \r the same.
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(e7000_open): Allow pc as a serial port
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* sh/sh.mt: Add ser-e7kpc.
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* h8300/h8300hms.mt: Add ser-e7kpc.
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* main.c (proc_wait): Don't wait if using go32.
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Mon Jun 27 00:35:51 1994 Jeff Law (law@snake.cs.utah.edu)
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* somread.c: Simplify by using stabsect_build_psymtabs.
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144
gdb/ser-go32.c
144
gdb/ser-go32.c
@ -21,12 +21,13 @@
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#include "serial.h"
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#include <sys/dos.h>
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/* This is unused for now. We just return a placeholder. */
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#define disable() asm("cli")
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#define enable() asm("sti")
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struct go32_ttystate
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{
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int bogus;
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};
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typedef struct
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{
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short jmp_op;
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@ -37,9 +38,30 @@ typedef struct
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short getp;
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short putp;
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short iov;
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short count;
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short overflow;
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short buffer_size;
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short ovflushes;
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}
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ASYNC_STRUCT;
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#define AOFF_JMP_OP 0
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#define AOFF_SIGNATURE 2
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#define AOFF_VERSION 4
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#define AOFF_BUFFER_START 6
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#define AOFF_BUFFER_END 8
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#define AOFF_GETP 10
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#define AOFF_PUTP 12
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#define AOFF_IOV 14
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#define AOFF_COUNT 16
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#define AOFF_OVERFLOW 18
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#define AOFF_BUFFER_SIZE 20
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#define AOFF_OVFLUSHES 22
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static ASYNC_STRUCT a; /* Copy in our mem of the struct */
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static long aindex; /* index into dos space of struct */
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static int go32_open PARAMS ((serial_t scb, const char *name));
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static void go32_raw PARAMS ((serial_t scb));
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static int go32_readchar PARAMS ((serial_t scb, int timeout));
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@ -48,8 +70,8 @@ static int go32_write PARAMS ((serial_t scb, const char *str, int len));
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static void go32_close PARAMS ((serial_t scb));
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static serial_ttystate go32_get_tty_state PARAMS ((serial_t scb));
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static int go32_set_tty_state PARAMS ((serial_t scb, serial_ttystate state));
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static char *aptr PARAMS ((short p));
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static ASYNC_STRUCT *getivec PARAMS ((int which));
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static unsigned char aptr PARAMS ((short p));
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static unsigned long getivec PARAMS ((int which));
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static int dos_async_init PARAMS ((int port));
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static void dos_async_tx PARAMS ((const char c));
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static int dos_async_rx PARAMS (());
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@ -60,43 +82,60 @@ static int dosasync_write PARAMS ((int fd, const char *buf, int len));
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#define VERSION 1
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#define OFFSET 0x104
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#define peek(a,b) (*(unsigned short *)(0xe0000000 + (a)*16 + (b)))
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unsigned char bb;
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unsigned short sb;
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unsigned long sl;
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static volatile ASYNC_STRUCT *async;
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static int iov;
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#define com_rb iov
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#define com_tb iov
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#define com_ier iov+1
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#define com_ifr iov+2
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#define com_bfr iov+3
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#define com_mcr iov+4
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#define com_lsr iov+5
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#define com_msr iov+6
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#define SET_BYTE(x,y) { char _buf = y;dosmemput(&_buf,1, x);}
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#define SET_WORD(x,y) { short _buf = y;dosmemput(&_buf,2, x);}
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#define GET_BYTE(x) ( dosmemget((x),1,&bb), bb)
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static char *
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#define GET_LONG(x) ( dosmemget((x),4,&sl), sl)
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static
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unsigned short
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GET_WORD (x)
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{
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unsigned short sb;
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dosmemget ((x), 2, &sb);
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return sb;
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}
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static int iov[2];
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#define com_rb(n) iov[n]
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#define com_tb(n) iov[n]
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#define com_ier(n) iov[n]+1
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#define com_ifr(n) iov[n]+2
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#define com_bfr(n) iov[n]+3
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#define com_mcr(n) iov[n]+4
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#define com_lsr(n) iov[n]+5
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#define com_msr(n) iov[n]+6
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static unsigned char
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aptr (p)
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short p;
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{
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return (char *) ((unsigned) async - OFFSET + p);
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return GET_BYTE (aindex - OFFSET + p);
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}
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static ASYNC_STRUCT *
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static unsigned long
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getivec (int which)
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{
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ASYNC_STRUCT *a;
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long tryaindex;
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if (peek (0, which * 4) != OFFSET)
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if (GET_WORD (which * 4) != OFFSET)
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return 0;
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a = (ASYNC_STRUCT *) (0xe0000000 + peek (0, which * 4 + 2) * 16 + peek (0, which * 4));
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/* Find out where in memory this lives */
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tryaindex = GET_WORD (which * 4 + 2) * 16 + GET_WORD (which * 4);
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if (a->signature != SIGNATURE)
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if (GET_WORD (tryaindex + 2) != SIGNATURE)
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return 0;
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if (a->version != VERSION)
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if (GET_WORD (tryaindex + 4) != VERSION)
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return 0;
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return a;
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return tryaindex;
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}
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static int
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@ -106,16 +145,16 @@ dos_async_init (port)
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switch (port)
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{
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case 1:
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async = getivec (12);
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aindex = getivec (12);
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break;
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case 2:
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async = getivec (11);
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aindex = getivec (11);
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break;
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default:
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return 0;
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}
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if (!async)
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if (!aindex)
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{
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error ("GDB cannot connect to asynctsr program, check that it is installed\n\
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and that serial I/O is not being redirected (perhaps by NFS)\n\n\
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@ -125,12 +164,10 @@ C> asynctsr %d\n\
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C> gdb \n", port, port);
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}
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iov = async->iov;
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outportb (com_ier, 0x0f);
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outportb (com_bfr, 0x03);
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outportb (com_mcr, 0x0b);
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async->getp = async->putp = async->buffer_start;
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iov[0] = GET_WORD (aindex + AOFF_IOV);
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outportb (com_ier (0), 0x0f);
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outportb (com_bfr (0), 0x03);
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outportb (com_mcr (0), 0x0b);
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return 1;
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}
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@ -138,17 +175,33 @@ static void
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dos_async_tx (c)
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const char c;
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{
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while (~inportb (com_lsr) & 0x20)
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while (~inportb (com_lsr (0)) & 0x20)
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;
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outportb (com_tb, c);
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outportb (com_tb (0), c);
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}
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#define dos_async_ready() (async->getp != async->putp)
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static int
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dos_async_ready ()
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{
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int ret;
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disable ();
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#if RDY_CNT
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ret = GET_WORD (aindex + AOFF_COUNT);
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#else
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ret = GET_WORD (aindex + AOFF_GETP) != GET_WORD (aindex + AOFF_PUTP);
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#endif
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enable ();
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return ret;
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}
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static int
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dos_async_rx ()
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{
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char rv;
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short idx;
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while (!dos_async_ready ())
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{
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@ -158,12 +211,15 @@ dos_async_rx ()
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return 0;
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}
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}
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rv = *aptr (async->getp++);
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if (async->getp >= async->buffer_end)
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async->getp = async->buffer_start;
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disable ();
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idx = GET_WORD (aindex + AOFF_GETP);
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idx++;
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SET_WORD (aindex + AOFF_GETP, idx);
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rv = aptr (idx - 1);
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SET_WORD (aindex + AOFF_COUNT, GET_WORD (aindex + AOFF_COUNT) - 1);
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if (GET_WORD (aindex + AOFF_GETP) > GET_WORD (aindex + AOFF_BUFFER_END))
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SET_WORD (aindex + AOFF_GETP, GET_WORD (aindex + AOFF_BUFFER_START));
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enable ();
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return rv;
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}
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