1/* gdbhost.c -- ARMulator RDP to gdb comms code: ARM6 Instruction Emulator. 2 Copyright (C) 1994 Advanced RISC Machines Ltd. 3 4 This program is free software; you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published by 6 the Free Software Foundation; either version 2 of the License, or 7 (at your option) any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program; if not, write to the Free Software 16 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ 17 18/***********************************************************/ 19/* Functions that communicate info back to the debugger... */ 20/***********************************************************/ 21 22#include <stdio.h> 23#include <stdarg.h> 24#include "armdefs.h" 25#include "communicate.h" 26#include "dbg_rdi.h" 27#include "armos.h" 28 29#define OS_SendNothing 0x0 30#define OS_SendChar 0x1 31#define OS_SendWord 0x2 32#define OS_SendString 0x3 33 34/* Defined in kid.c */ 35extern int wait_for_osreply (ARMword * reply); 36 37/* A pipe for handling SWI return values that goes straight from the */ 38/* parent to the ARMulator host interface, bypassing the childs RDP */ 39/* to RDI interpreter */ 40int DebuggerARMul[2]; 41 42/* The pipes between the two processes */ 43int mumkid[2]; 44int kidmum[2]; 45 46void 47myprint (void *arg, const char *format, va_list ap) 48{ 49#ifdef DEBUG 50 fprintf (stderr, "Host: myprint\n"); 51#endif 52 vfprintf (stderr, format, ap); 53} 54 55 56/* Waits for a keypress on the debuggers' keyboard */ 57void 58mypause (void *arg) 59{ 60#ifdef DEBUG 61 fprintf (stderr, "Host: mypause\n"); 62#endif 63} /* I do love exciting functions */ 64 65void 66mywritec (void *arg, int c) 67{ 68#ifdef DEBUG 69 fprintf (stderr, "Mywrite : %c\n", c); 70#endif 71 MYwrite_char (kidmum[1], RDP_OSOp); /* OS Operation Request Message */ 72 MYwrite_word (kidmum[1], SWI_WriteC); /* Print... */ 73 MYwrite_char (kidmum[1], OS_SendChar); /* ...a single character */ 74 MYwrite_char (kidmum[1], (unsigned char) c); 75 76 wait_for_osreply ((ARMword *) 0); 77} 78 79int 80myreadc (void *arg) 81{ 82 char c; 83 ARMword x; 84 85#ifdef DEBUG 86 fprintf (stderr, "Host: myreadc\n"); 87#endif 88 MYwrite_char (kidmum[1], RDP_OSOp); /* OS Operation Request Message */ 89 MYwrite_word (kidmum[1], SWI_ReadC); /* Read... */ 90 MYwrite_char (kidmum[1], OS_SendNothing); 91 92 c = wait_for_osreply (&x); 93 return (x); 94} 95 96 97int 98mywrite (void *arg, char const *buffer, int len) 99{ 100#ifdef DEBUG 101 fprintf (stderr, "Host: mywrite\n"); 102#endif 103 return 0; 104} 105 106char * 107mygets (void *arg, char *buffer, int len) 108{ 109#ifdef DEBUG 110 fprintf (stderr, "Host: mygets\n"); 111#endif 112 return buffer; 113} 114