108 lines
2.8 KiB
C
108 lines
2.8 KiB
C
/* gdbhost.c -- ARMulator RDP to gdb comms code: ARM6 Instruction Emulator.
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Copyright (C) 1994 Advanced RISC Machines Ltd.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/***********************************************************/
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/* Functions that communicate info back to the debugger... */
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/***********************************************************/
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#include <stdio.h>
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#include <stdarg.h>
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#include "armdefs.h"
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#include "communicate.h"
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#include "dbg_rdi.h"
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#include "armos.h"
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#define OS_SendNothing 0x0
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#define OS_SendChar 0x1
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#define OS_SendWord 0x2
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#define OS_SendString 0x3
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/* Defined in kid.c */
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extern int wait_for_osreply(ARMword *reply);
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/* A pipe for handling SWI return values that goes straight from the */
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/* parent to the ARMulator host interface, bypassing the childs RDP */
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/* to RDI interpreter */
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int DebuggerARMul[2];
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/* The pipes between the two processes */
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int mumkid[2];
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int kidmum[2];
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void myprint (void *arg, const char *format, va_list ap)
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{
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#ifdef DEBUG
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fprintf (stderr, "Host: myprint\n");
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#endif
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vfprintf (stderr, format, ap);
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}
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/* Waits for a keypress on the debuggers' keyboard */
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void mypause (void *arg)
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{
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#ifdef DEBUG
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fprintf (stderr, "Host: mypause\n");
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#endif
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} /* I do love exciting functions */
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void mywritec(void *arg, int c)
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{
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#ifdef DEBUG
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fprintf(stderr, "Mywrite : %c\n", c);
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#endif
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MYwrite_char(kidmum[1], RDP_OSOp); /* OS Operation Request Message */
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MYwrite_word(kidmum[1], SWI_WriteC); /* Print... */
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MYwrite_char(kidmum[1], OS_SendChar); /* ...a single character */
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MYwrite_char(kidmum[1], (unsigned char) c);
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wait_for_osreply((ARMword *) 0);
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}
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int myreadc(void *arg)
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{
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char c;
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ARMword x;
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#ifdef DEBUG
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fprintf(stderr, "Host: myreadc\n");
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#endif
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MYwrite_char(kidmum[1], RDP_OSOp); /* OS Operation Request Message */
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MYwrite_word(kidmum[1], SWI_ReadC); /* Read... */
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MYwrite_char(kidmum[1], OS_SendNothing);
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c = wait_for_osreply(&x);
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return (x);
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}
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int mywrite(void *arg, char const *buffer, int len)
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{
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#ifdef DEBUG
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fprintf(stderr, "Host: mywrite\n");
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#endif
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return 0;
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}
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char *mygets(void *arg, char *buffer, int len)
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{
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#ifdef DEBUG
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fprintf(stderr, "Host: mygets\n");
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#endif
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return buffer;
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}
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