| 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 3 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, see <http://www.gnu.org/licenses/>. */ |
| 16 | |
| 17 | /***********************************************************/ |
| 18 | /* Functions that communicate info back to the debugger... */ |
| 19 | /***********************************************************/ |
| 20 | |
| 21 | #include <stdio.h> |
| 22 | #include <stdarg.h> |
| 23 | #include "armdefs.h" |
| 24 | #include "communicate.h" |
| 25 | #include "dbg_rdi.h" |
| 26 | #include "armos.h" |
| 27 | |
| 28 | #define OS_SendNothing 0x0 |
| 29 | #define OS_SendChar 0x1 |
| 30 | #define OS_SendWord 0x2 |
| 31 | #define OS_SendString 0x3 |
| 32 | |
| 33 | /* Defined in kid.c */ |
| 34 | extern int wait_for_osreply (ARMword * reply); |
| 35 | |
| 36 | /* A pipe for handling SWI return values that goes straight from the */ |
| 37 | /* parent to the ARMulator host interface, bypassing the childs RDP */ |
| 38 | /* to RDI interpreter */ |
| 39 | int DebuggerARMul[2]; |
| 40 | |
| 41 | /* The pipes between the two processes */ |
| 42 | int mumkid[2]; |
| 43 | int kidmum[2]; |
| 44 | |
| 45 | void |
| 46 | myprint (void *arg, const char *format, va_list ap) |
| 47 | { |
| 48 | #ifdef DEBUG |
| 49 | fprintf (stderr, "Host: myprint\n"); |
| 50 | #endif |
| 51 | vfprintf (stderr, format, ap); |
| 52 | } |
| 53 | |
| 54 | |
| 55 | /* Waits for a keypress on the debuggers' keyboard */ |
| 56 | void |
| 57 | mypause (void *arg) |
| 58 | { |
| 59 | #ifdef DEBUG |
| 60 | fprintf (stderr, "Host: mypause\n"); |
| 61 | #endif |
| 62 | } /* I do love exciting functions */ |
| 63 | |
| 64 | void |
| 65 | mywritec (void *arg, int c) |
| 66 | { |
| 67 | #ifdef DEBUG |
| 68 | fprintf (stderr, "Mywrite : %c\n", c); |
| 69 | #endif |
| 70 | MYwrite_char (kidmum[1], RDP_OSOp); /* OS Operation Request Message */ |
| 71 | MYwrite_word (kidmum[1], SWI_WriteC); /* Print... */ |
| 72 | MYwrite_char (kidmum[1], OS_SendChar); /* ...a single character */ |
| 73 | MYwrite_char (kidmum[1], (unsigned char) c); |
| 74 | |
| 75 | wait_for_osreply ((ARMword *) 0); |
| 76 | } |
| 77 | |
| 78 | int |
| 79 | myreadc (void *arg) |
| 80 | { |
| 81 | char c; |
| 82 | ARMword x; |
| 83 | |
| 84 | #ifdef DEBUG |
| 85 | fprintf (stderr, "Host: myreadc\n"); |
| 86 | #endif |
| 87 | MYwrite_char (kidmum[1], RDP_OSOp); /* OS Operation Request Message */ |
| 88 | MYwrite_word (kidmum[1], SWI_ReadC); /* Read... */ |
| 89 | MYwrite_char (kidmum[1], OS_SendNothing); |
| 90 | |
| 91 | c = wait_for_osreply (&x); |
| 92 | return (x); |
| 93 | } |
| 94 | |
| 95 | |
| 96 | int |
| 97 | mywrite (void *arg, char const *buffer, int len) |
| 98 | { |
| 99 | #ifdef DEBUG |
| 100 | fprintf (stderr, "Host: mywrite\n"); |
| 101 | #endif |
| 102 | return 0; |
| 103 | } |
| 104 | |
| 105 | char * |
| 106 | mygets (void *arg, char *buffer, int len) |
| 107 | { |
| 108 | #ifdef DEBUG |
| 109 | fprintf (stderr, "Host: mygets\n"); |
| 110 | #endif |
| 111 | return buffer; |
| 112 | } |