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annotate gdb_remote.c @ 1470:1e3e0205640f

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Add support for writeable ROM and an entry for Game no Kanzume Otokuyou using that support as it expects the cart area to be writable
author Michael Pavone <pavone@retrodev.com>
date Sat, 14 Oct 2017 05:03:38 -0700
parents 85a90964b557
children ded16f3d7eb4 d6d4c006a7b3
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /*
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2 Copyright 2013 Michael Pavone
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3 This file is part of BlastEm.
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4 BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text.
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5 */
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6 #ifdef _WIN32
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7 #define WINVER 0x501
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8 #include <winsock2.h>
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9 #include <ws2tcpip.h>
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10
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11 int gdb_sock;
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12 #define GDB_IN_FD gdb_sock
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13 #define GDB_OUT_FD gdb_sock
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14 #define GDB_READ(fd, buf, bufsize) recv(fd, buf, bufsize, 0)
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15 #define GDB_WRITE(fd, buf, bufsize) send(fd, buf, bufsize, 0)
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16 #else
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17 #define GDB_IN_FD STDIN_FILENO
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18 #define GDB_OUT_FD STDOUT_FILENO
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19 #define GDB_READ read
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20 #define GDB_WRITE write
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21 #endif
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22
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23 #include "gdb_remote.h"
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24 #include "68kinst.h"
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25 #include "debug.h"
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26 #include "util.h"
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27 #include <unistd.h>
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28 #include <fcntl.h>
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29 #include <stddef.h>
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30 #include <stdlib.h>
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31 #include <stdio.h>
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32 #include <string.h>
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33
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35
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36 #define INITIAL_BUFFER_SIZE (16*1024)
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37
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38 #ifdef DO_DEBUG_PRINT
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39 #define dfprintf fprintf
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40 #else
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41 #define dfprintf
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42 #endif
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43
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44 char * buf = NULL;
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45 char * curbuf = NULL;
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46 char * end = NULL;
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47 size_t bufsize;
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48 int cont = 0;
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49 int expect_break_response=0;
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50 uint32_t resume_pc;
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51
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52
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53 static uint16_t branch_t;
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54 static uint16_t branch_f;
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55
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56 static bp_def * breakpoints = NULL;
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57 static uint32_t bp_index = 0;
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58
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59
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60 void hex_32(uint32_t num, char * out)
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61 {
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62 for (int32_t shift = 28; shift >= 0; shift -= 4)
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63 {
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64 uint8_t nibble = num >> shift & 0xF;
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65 *(out++) = nibble > 9 ? nibble - 0xA + 'A' : nibble + '0';
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66 }
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67 }
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68
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69 void hex_16(uint16_t num, char * out)
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70 {
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71 for (int16_t shift = 14; shift >= 0; shift -= 4)
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72 {
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73 uint8_t nibble = num >> shift & 0xF;
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74 *(out++) = nibble > 9 ? nibble - 0xA + 'A' : nibble + '0';
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75 }
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76 }
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78 void hex_8(uint8_t num, char * out)
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79 {
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80 uint8_t nibble = num >> 4;
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81 *(out++) = nibble > 9 ? nibble - 0xA + 'A' : nibble + '0';
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82 nibble = num & 0xF;
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83 *out = nibble > 9 ? nibble - 0xA + 'A' : nibble + '0';
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84 }
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85
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86 void gdb_calc_checksum(char * command, char *out)
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87 {
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88 uint8_t checksum = 0;
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89 while (*command)
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90 {
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91 checksum += *(command++);
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92 }
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93 hex_8(checksum, out);
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94 }
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95
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96 void write_or_die(int fd, const void *buf, size_t count)
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97 {
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98 if (GDB_WRITE(fd, buf, count) < count) {
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99 fatal_error("Error writing to stdout\n");
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100 }
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101 }
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102
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103 void gdb_send_command(char * command)
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104 {
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105 char end[3];
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106 write_or_die(GDB_OUT_FD, "$", 1);
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107 write_or_die(GDB_OUT_FD, command, strlen(command));
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108 end[0] = '#';
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109 gdb_calc_checksum(command, end+1);
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110 write_or_die(GDB_OUT_FD, end, 3);
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111 dfprintf(stderr, "Sent $%s#%c%c\n", command, end[1], end[2]);
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112 }
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113
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114 uint32_t calc_status(m68k_context * context)
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115 {
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116 uint32_t status = context->status << 3;
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117 for (int i = 0; i < 5; i++)
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118 {
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119 status <<= 1;
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120 status |= context->flags[i];
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121 }
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122 return status;
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123 }
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124
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125 void update_status(m68k_context * context, uint16_t value)
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parents: 525
diff changeset
126 {
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
127 context->status = value >> 8;
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
128 for (int i = 4; i >= 0; i--)
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
129 {
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
130 context->flags[i] = value & 1;
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
131 value >>= 1;
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
132 }
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
133 }
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
134
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
135 uint8_t read_byte(m68k_context * context, uint32_t address)
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
136 {
801
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
137
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
138 genesis_context *gen = context->system;
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
139 //TODO: Use generated read/write functions to support access to hardware that is not ROM or RAM
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
140 uint16_t * word = get_native_pointer(address & 0xFFFFFFFE, (void **)context->mem_pointers, &context->options->gen);
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
141 if (word) {
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
142 if (address & 1) {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
143 return *word;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
144 }
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
145 return *word >> 8;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
146 }
801
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
147 if (address >= 0xA00000 && address < 0xA04000) {
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
148 return gen->zram[address & 0x1FFF];
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
149 }
801
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
150 return 0;
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
151 }
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
152
530
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
153 void write_byte(m68k_context * context, uint32_t address, uint8_t value)
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
154 {
801
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
155 genesis_context *gen = context->system;
530
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
156 //TODO: Use generated read/write functions so that memory map is properly respected
801
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
157 uint16_t * word = get_native_pointer(address & 0xFFFFFFFE, (void **)context->mem_pointers, &context->options->gen);
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
158 if (word) {
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
159 if (address & 1) {
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
160 *word = (*word & 0xFF00) | value;
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
161 } else {
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
162 *word = (*word & 0xFF) | value << 8;
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
163 }
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
164 //TODO: Deal with this more generally once m68k_handle_code_write can handle it
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
165 if (address >= 0xE00000) {
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
166 m68k_handle_code_write(address, context);
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
167 }
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
168 return;
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
169 }
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
170 if (address >= 0xA00000 && address < 0xA04000) {
1103
22e87b739ad6 WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents: 804
diff changeset
171 gen->zram[address & 0x1FFF] = value;
530
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
172 genesis_context * gen = context->system;
565
9324f721efa6 Add a separate flag/define for disabling the Z80 at compile time to ease refactoring
Michael Pavone <pavone@retrodev.com>
parents: 548
diff changeset
173 #ifndef NO_Z80
804
59e664fa2da8 Fix a search/replace bug from the old Win32 GDB remote debugging work and replace some more print+exit combos with fatal_error
Michael Pavone <pavone@retrodev.com>
parents: 803
diff changeset
174 z80_handle_code_write(address & 0x1FFF, gen->z80);
548
a3afee2271ce Initial work on the x86-32 target
Michael Pavone <pavone@retrodev.com>
parents: 530
diff changeset
175 #endif
530
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
176 return;
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
177 } else {
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
178 return;
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
179 }
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
180 }
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
181
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
182 void gdb_run_command(m68k_context * context, uint32_t pc, char * command)
456
249d24973682 Initial work on GDB remote debugging support
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
183 {
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
184 char send_buf[512];
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
185 dfprintf(stderr, "Received command %s\n", command);
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
186 switch(*command)
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
187 {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
188
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
189 case 'c':
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
190 if (*(command+1) != 0) {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
191 //TODO: implement resuming at an arbitrary address
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
192 goto not_impl;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
193 }
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
194 cont = 1;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
195 expect_break_response = 1;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
196 break;
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
197 case 's': {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
198 if (*(command+1) != 0) {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
199 //TODO: implement resuming at an arbitrary address
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
200 goto not_impl;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
201 }
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
202 m68kinst inst;
801
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
203 genesis_context *gen = context->system;
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
204 uint16_t * pc_ptr = get_native_pointer(pc, (void **)context->mem_pointers, &context->options->gen);
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
205 if (!pc_ptr) {
792
724bbec47f86 Use a new fatal_error function instead of calling fprintf and exit for fatal errors. This new function more gracefully handles the case in which BlastEm was not started from a terminal or disconnected from ther terminal (Windows).
Michael Pavone <pavone@retrodev.com>
parents: 757
diff changeset
206 fatal_error("Entered gdb remote debugger stub at address %X\n", pc);
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
207 }
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
208 uint16_t * after_pc = m68k_decode(pc_ptr, &inst, pc & 0xFFFFFF);
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
209 uint32_t after = pc + (after_pc-pc_ptr)*2;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
210
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
211 if (inst.op == M68K_RTS) {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
212 after = (read_dma_value(context->aregs[7]/2) << 16) | read_dma_value(context->aregs[7]/2 + 1);
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
213 } else if (inst.op == M68K_RTE || inst.op == M68K_RTR) {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
214 after = (read_dma_value((context->aregs[7]+2)/2) << 16) | read_dma_value((context->aregs[7]+2)/2 + 1);
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
215 } else if(m68k_is_branch(&inst)) {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
216 if (inst.op == M68K_BCC && inst.extra.cond != COND_TRUE) {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
217 branch_f = after;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
218 branch_t = m68k_branch_target(&inst, context->dregs, context->aregs) & 0xFFFFFF;
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1103
diff changeset
219 insert_breakpoint(context, branch_t, gdb_debug_enter);
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
220 } else if(inst.op == M68K_DBCC && inst.extra.cond != COND_FALSE) {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
221 branch_t = after;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
222 branch_f = m68k_branch_target(&inst, context->dregs, context->aregs) & 0xFFFFFF;
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1103
diff changeset
223 insert_breakpoint(context, branch_f, gdb_debug_enter);
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
224 } else {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
225 after = m68k_branch_target(&inst, context->dregs, context->aregs) & 0xFFFFFF;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
226 }
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
227 }
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1103
diff changeset
228 insert_breakpoint(context, after, gdb_debug_enter);
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
229
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
230 cont = 1;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
231 expect_break_response = 1;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
232 break;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
233 }
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
234 case 'H':
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
235 if (command[1] == 'g' || command[1] == 'c') {;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
236 //no thread suport, just acknowledge
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
237 gdb_send_command("OK");
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
238 } else {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
239 goto not_impl;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
240 }
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
241 break;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
242 case 'Z': {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
243 uint8_t type = command[1];
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
244 if (type < '2') {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
245 uint32_t address = strtoul(command+3, NULL, 16);
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1103
diff changeset
246 insert_breakpoint(context, address, gdb_debug_enter);
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
247 bp_def *new_bp = malloc(sizeof(bp_def));
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
248 new_bp->next = breakpoints;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
249 new_bp->address = address;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
250 new_bp->index = bp_index++;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
251 breakpoints = new_bp;
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
252 gdb_send_command("OK");
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
253 } else {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
254 //watchpoints are not currently supported
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
255 gdb_send_command("");
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
256 }
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
257 break;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
258 }
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
259 case 'z': {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
260 uint8_t type = command[1];
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
261 if (type < '2') {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
262 uint32_t address = strtoul(command+3, NULL, 16);
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
263 remove_breakpoint(context, address);
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
264 bp_def **found = find_breakpoint(&breakpoints, address);
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
265 if (*found)
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
266 {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
267 bp_def * to_remove = *found;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
268 *found = to_remove->next;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
269 free(to_remove);
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
270 }
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
271 gdb_send_command("OK");
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
272 } else {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
273 //watchpoints are not currently supported
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
274 gdb_send_command("");
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
275 }
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
276 break;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
277 }
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
278 case 'g': {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
279 char * cur = send_buf;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
280 for (int i = 0; i < 8; i++)
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
281 {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
282 hex_32(context->dregs[i], cur);
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
283 cur += 8;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
284 }
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
285 for (int i = 0; i < 8; i++)
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
286 {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
287 hex_32(context->aregs[i], cur);
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
288 cur += 8;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
289 }
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
290 hex_32(calc_status(context), cur);
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
291 cur += 8;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
292 hex_32(pc, cur);
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
293 cur += 8;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
294 *cur = 0;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
295 gdb_send_command(send_buf);
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
296 break;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
297 }
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
298 case 'm': {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
299 char * rest;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
300 uint32_t address = strtoul(command+1, &rest, 16);
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
301 uint32_t size = strtoul(rest+1, NULL, 16);
757
483f7e7926a6 More clang warning cleanup
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
302 if (size > (sizeof(send_buf)-1)/2) {
483f7e7926a6 More clang warning cleanup
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
303 size = (sizeof(send_buf)-1)/2;
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
304 }
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
305 char *cur = send_buf;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
306 while (size)
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
307 {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
308 hex_8(read_byte(context, address), cur);
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
309 cur += 2;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
310 address++;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
311 size--;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
312 }
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
313 *cur = 0;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
314 gdb_send_command(send_buf);
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
315 break;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
316 }
530
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
317 case 'M': {
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
318 char * rest;
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
319 uint32_t address = strtoul(command+1, &rest, 16);
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
320 uint32_t size = strtoul(rest+1, &rest, 16);
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
321
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
322 char *cur = rest+1;
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
323 while (size)
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
324 {
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
325 char tmp[3];
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
326 tmp[0] = *(cur++);
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
327 tmp[1] = *(cur++);
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
328 tmp[2] = 0;
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
329 write_byte(context, address, strtoul(tmp, NULL, 16));
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
330 address++;
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
331 size--;
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
332 }
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
333 gdb_send_command("OK");
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
334 break;
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
335 }
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
336 case 'X':
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
337 //binary transfers aren't supported currently as I don't feel like dealing with the escaping
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
338 gdb_send_command("");
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
339 break;
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
340 case 'p': {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
341 unsigned long reg = strtoul(command+1, NULL, 16);
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
342
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
343 if (reg < 8) {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
344 hex_32(context->dregs[reg], send_buf);
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
345 } else if (reg < 16) {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
346 hex_32(context->aregs[reg-8], send_buf);
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
347 } else if (reg == 16) {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
348 hex_32(calc_status(context), send_buf);
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
349 } else if (reg == 17) {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
350 hex_32(pc, send_buf);
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
351 } else {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
352 send_buf[0] = 0;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
353 }
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
354 send_buf[8] = 0;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
355 gdb_send_command(send_buf);
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
356 break;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
357 }
526
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
358 case 'P': {
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
359 char *after = NULL;
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
360 unsigned long reg = strtoul(command+1, &after, 16);
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
361 uint32_t value = strtoul(after+1, NULL, 16);
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
362
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
363 if (reg < 8) {
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
364 context->dregs[reg] = value;
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
365 } else if (reg < 16) {
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
366 context->aregs[reg-8] = value;
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
367 } else if (reg == 16) {
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
368 update_status(context, value);
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
369 } else {
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
370 //supporting updates to PC is going to be a pain
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
371 gdb_send_command("E01");
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
372 break;
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
373 }
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
374 gdb_send_command("OK");
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
375 break;
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
376 }
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
377 case 'q':
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
378 if (!memcmp("Supported", command+1, strlen("Supported"))) {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
379 sprintf(send_buf, "PacketSize=%X", (int)bufsize);
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
380 gdb_send_command(send_buf);
1166
73e36dac5be7 Fix GDB remote protocol support
Michael Pavone <pavone@retrodev.com>
parents: 1111
diff changeset
381 } else if (!memcmp("Attached", command+1, strlen("Attached"))) {
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
382 //not really meaningful for us, but saying we spawned a new process
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
383 //is probably closest to the truth
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
384 gdb_send_command("0");
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
385 } else if (!memcmp("Offsets", command+1, strlen("Offsets"))) {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
386 //no relocations, so offsets are all 0
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
387 gdb_send_command("Text=0;Data=0;Bss=0");
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
388 } else if (!memcmp("Symbol", command+1, strlen("Symbol"))) {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
389 gdb_send_command("");
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
390 } else if (!memcmp("TStatus", command+1, strlen("TStatus"))) {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
391 //TODO: actual tracepoint support
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
392 gdb_send_command("T0;tnotrun:0");
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
393 } else if (!memcmp("TfV", command+1, strlen("TfV")) || !memcmp("TfP", command+1, strlen("TfP"))) {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
394 //TODO: actual tracepoint support
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
395 gdb_send_command("");
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
396 } else if (command[1] == 'C') {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
397 //we only support a single thread currently, so send 1
1166
73e36dac5be7 Fix GDB remote protocol support
Michael Pavone <pavone@retrodev.com>
parents: 1111
diff changeset
398 gdb_send_command("QC1");
73e36dac5be7 Fix GDB remote protocol support
Michael Pavone <pavone@retrodev.com>
parents: 1111
diff changeset
399 } else if (!strcmp("fThreadInfo", command + 1)) {
73e36dac5be7 Fix GDB remote protocol support
Michael Pavone <pavone@retrodev.com>
parents: 1111
diff changeset
400 //we only support a single thread currently, so send 1
73e36dac5be7 Fix GDB remote protocol support
Michael Pavone <pavone@retrodev.com>
parents: 1111
diff changeset
401 gdb_send_command("m1");
73e36dac5be7 Fix GDB remote protocol support
Michael Pavone <pavone@retrodev.com>
parents: 1111
diff changeset
402 } else if (!strcmp("sThreadInfo", command + 1)) {
73e36dac5be7 Fix GDB remote protocol support
Michael Pavone <pavone@retrodev.com>
parents: 1111
diff changeset
403 gdb_send_command("l");
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
404 } else {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
405 goto not_impl;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
406 }
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
407 break;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
408 case 'v':
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
409 if (!memcmp("Cont?", command+1, strlen("Cont?"))) {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
410 gdb_send_command("vCont;c;C;s;S");
1166
73e36dac5be7 Fix GDB remote protocol support
Michael Pavone <pavone@retrodev.com>
parents: 1111
diff changeset
411 } else if (!strcmp("MustReplyEmpty", command + 1)) {
73e36dac5be7 Fix GDB remote protocol support
Michael Pavone <pavone@retrodev.com>
parents: 1111
diff changeset
412 gdb_send_command("");
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
413 } else if (!memcmp("Cont;", command+1, strlen("Cont;"))) {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
414 switch (*(command + 1 + strlen("Cont;")))
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
415 {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
416 case 'c':
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
417 case 'C':
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
418 //might be interesting to have continue with signal fire a
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
419 //trap exception or something, but for no we'll treat it as
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
420 //a normal continue
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
421 cont = 1;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
422 expect_break_response = 1;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
423 break;
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
424 case 's':
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
425 case 'S': {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
426 m68kinst inst;
801
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
427 genesis_context *gen = context->system;
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
428 uint16_t * pc_ptr = get_native_pointer(pc, (void **)context->mem_pointers, &context->options->gen);
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
429 if (!pc_ptr) {
792
724bbec47f86 Use a new fatal_error function instead of calling fprintf and exit for fatal errors. This new function more gracefully handles the case in which BlastEm was not started from a terminal or disconnected from ther terminal (Windows).
Michael Pavone <pavone@retrodev.com>
parents: 757
diff changeset
430 fatal_error("Entered gdb remote debugger stub at address %X\n", pc);
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
431 }
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
432 uint16_t * after_pc = m68k_decode(pc_ptr, &inst, pc & 0xFFFFFF);
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
433 uint32_t after = pc + (after_pc-pc_ptr)*2;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
434
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
435 if (inst.op == M68K_RTS) {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
436 after = (read_dma_value(context->aregs[7]/2) << 16) | read_dma_value(context->aregs[7]/2 + 1);
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
437 } else if (inst.op == M68K_RTE || inst.op == M68K_RTR) {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
438 after = (read_dma_value((context->aregs[7]+2)/2) << 16) | read_dma_value((context->aregs[7]+2)/2 + 1);
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
439 } else if(m68k_is_branch(&inst)) {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
440 if (inst.op == M68K_BCC && inst.extra.cond != COND_TRUE) {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
441 branch_f = after;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
442 branch_t = m68k_branch_target(&inst, context->dregs, context->aregs) & 0xFFFFFF;
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1103
diff changeset
443 insert_breakpoint(context, branch_t, gdb_debug_enter);
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
444 } else if(inst.op == M68K_DBCC && inst.extra.cond != COND_FALSE) {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
445 branch_t = after;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
446 branch_f = m68k_branch_target(&inst, context->dregs, context->aregs) & 0xFFFFFF;
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1103
diff changeset
447 insert_breakpoint(context, branch_f, gdb_debug_enter);
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
448 } else {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
449 after = m68k_branch_target(&inst, context->dregs, context->aregs) & 0xFFFFFF;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
450 }
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
451 }
1111
2eb54e24914e Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents: 1103
diff changeset
452 insert_breakpoint(context, after, gdb_debug_enter);
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
453
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
454 cont = 1;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
455 expect_break_response = 1;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
456 break;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
457 }
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
458 default:
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
459 goto not_impl;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
460 }
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
461 } else {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
462 goto not_impl;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
463 }
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
464 break;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
465 case '?':
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
466 gdb_send_command("S05");
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
467 break;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
468 default:
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
469 goto not_impl;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
470
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
471 }
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
472 return;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
473 not_impl:
792
724bbec47f86 Use a new fatal_error function instead of calling fprintf and exit for fatal errors. This new function more gracefully handles the case in which BlastEm was not started from a terminal or disconnected from ther terminal (Windows).
Michael Pavone <pavone@retrodev.com>
parents: 757
diff changeset
474 fatal_error("Command %s is not implemented, exiting...\n", command);
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
475 }
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
476
1329
85a90964b557 Fix interaction between 68K debugger and instruction retranslation due to self modifying code or bank switching
Michael Pavone <pavone@retrodev.com>
parents: 1245
diff changeset
477 void gdb_debug_enter(m68k_context * context, uint32_t pc)
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
478 {
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
479 dfprintf(stderr, "Entered debugger at address %X\n", pc);
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
480 if (expect_break_response) {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
481 gdb_send_command("S05");
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
482 expect_break_response = 0;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
483 }
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
484 if ((pc & 0xFFFFFF) == branch_t) {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
485 bp_def ** f_bp = find_breakpoint(&breakpoints, branch_f);
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
486 if (!*f_bp) {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
487 remove_breakpoint(context, branch_f);
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
488 }
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
489 branch_t = branch_f = 0;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
490 } else if((pc & 0xFFFFFF) == branch_f) {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
491 bp_def ** t_bp = find_breakpoint(&breakpoints, branch_t);
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
492 if (!*t_bp) {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
493 remove_breakpoint(context, branch_t);
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
494 }
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
495 branch_t = branch_f = 0;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
496 }
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
497 //Check if this is a user set breakpoint, or just a temporary one
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
498 bp_def ** this_bp = find_breakpoint(&breakpoints, pc & 0xFFFFFF);
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
499 if (!*this_bp) {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
500 remove_breakpoint(context, pc & 0xFFFFFF);
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
501 }
456
249d24973682 Initial work on GDB remote debugging support
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
502 resume_pc = pc;
505
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
503 cont = 0;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
504 uint8_t partial = 0;
456
249d24973682 Initial work on GDB remote debugging support
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
505 while(!cont)
249d24973682 Initial work on GDB remote debugging support
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
506 {
505
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
507 if (!curbuf) {
802
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
508 int numread = GDB_READ(GDB_IN_FD, buf, bufsize);
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
509 if (numread < 0) {
804
59e664fa2da8 Fix a search/replace bug from the old Win32 GDB remote debugging work and replace some more print+exit combos with fatal_error
Michael Pavone <pavone@retrodev.com>
parents: 803
diff changeset
510 fatal_error("Failed to read on GDB input file descriptor\n");
802
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
511 }
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
512 dfprintf(stderr, "read %d bytes\n", numread);
505
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
513 curbuf = buf;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
514 end = buf + numread;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
515 } else if (partial) {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
516 if (curbuf != buf) {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
517 memmove(curbuf, buf, end-curbuf);
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
518 end -= curbuf - buf;
505
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
519 }
1245
42fb3ee1e92c Fix direct usage of read rather than GDB_READ in gdb_remote.c
Michael Pavone <pavone@retrodev.com>
parents: 1189
diff changeset
520 int numread = GDB_READ(GDB_IN_FD, end, bufsize - (end-buf));
505
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
521 end += numread;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
522 curbuf = buf;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
523 }
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
524 for (; curbuf < end; curbuf++)
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
525 {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
526 if (*curbuf == '$')
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
527 {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
528 curbuf++;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
529 char * start = curbuf;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
530 while (curbuf < end && *curbuf != '#') {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
531 curbuf++;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
532 }
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
533 if (*curbuf == '#') {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
534 //check to make sure we've received the checksum bytes
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
535 if (end-curbuf >= 2) {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
536 //TODO: verify checksum
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
537 //Null terminate payload
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
538 *curbuf = 0;
505
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
539 //send acknowledgement
802
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
540 if (GDB_WRITE(GDB_OUT_FD, "+", 1) < 1) {
792
724bbec47f86 Use a new fatal_error function instead of calling fprintf and exit for fatal errors. This new function more gracefully handles the case in which BlastEm was not started from a terminal or disconnected from ther terminal (Windows).
Michael Pavone <pavone@retrodev.com>
parents: 757
diff changeset
541 fatal_error("Error writing to stdout\n");
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
542 }
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
543 gdb_run_command(context, pc, start);
505
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
544 curbuf += 2;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
545 }
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
546 } else {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
547 curbuf--;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
548 partial = 1;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
549 break;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
550 }
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
551 } else {
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
552 dfprintf(stderr, "Ignoring character %c\n", *curbuf);
505
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
553 }
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents: 467
diff changeset
554 }
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
555 if (curbuf == end) {
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
556 curbuf = NULL;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
557 }
456
249d24973682 Initial work on GDB remote debugging support
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
558 }
249d24973682 Initial work on GDB remote debugging support
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
559 }
249d24973682 Initial work on GDB remote debugging support
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
560
802
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
561 #ifdef _WIN32
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
562 void gdb_cleanup(void)
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
563 {
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
564 WSACleanup();
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
565 }
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
566 WSADATA wsa_data;
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
567 #endif
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
568
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
569 void gdb_remote_init(void)
456
249d24973682 Initial work on GDB remote debugging support
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
570 {
515
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
571 buf = malloc(INITIAL_BUFFER_SIZE);
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
572 curbuf = NULL;
1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents: 505
diff changeset
573 bufsize = INITIAL_BUFFER_SIZE;
802
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
574 #ifdef _WIN32
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
575 WSAStartup(MAKEWORD(2,2), &wsa_data);
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
576
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
577 struct addrinfo request, *result;
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
578 memset(&request, 0, sizeof(request));
1189
75ba222877f7 Force IPV4 for GDB remote debugging on Windows. Bind to localhost instead of unspecified address since listening on external ports probably isn't a good idea in the general case
Michael Pavone <pavone@retrodev.com>
parents: 1166
diff changeset
579 request.ai_family = AF_INET;
802
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
580 request.ai_socktype = SOCK_STREAM;
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
581 request.ai_flags = AI_PASSIVE;
1189
75ba222877f7 Force IPV4 for GDB remote debugging on Windows. Bind to localhost instead of unspecified address since listening on external ports probably isn't a good idea in the general case
Michael Pavone <pavone@retrodev.com>
parents: 1166
diff changeset
582 getaddrinfo("localhost", "1234", &request, &result);
802
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
583
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
584 int listen_sock = socket(result->ai_family, result->ai_socktype, result->ai_protocol);
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
585 if (listen_sock < 0) {
804
59e664fa2da8 Fix a search/replace bug from the old Win32 GDB remote debugging work and replace some more print+exit combos with fatal_error
Michael Pavone <pavone@retrodev.com>
parents: 803
diff changeset
586 fatal_error("Failed to open GDB remote debugging socket");
802
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
587 }
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
588 if (bind(listen_sock, result->ai_addr, result->ai_addrlen) < 0) {
804
59e664fa2da8 Fix a search/replace bug from the old Win32 GDB remote debugging work and replace some more print+exit combos with fatal_error
Michael Pavone <pavone@retrodev.com>
parents: 803
diff changeset
589 fatal_error("Failed to bind GDB remote debugging socket");
802
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
590 }
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
591 if (listen(listen_sock, 1) < 0) {
804
59e664fa2da8 Fix a search/replace bug from the old Win32 GDB remote debugging work and replace some more print+exit combos with fatal_error
Michael Pavone <pavone@retrodev.com>
parents: 803
diff changeset
592 fatal_error("Failed to listen on GDB remote debugging socket");
802
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
593 }
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
594 gdb_sock = accept(listen_sock, NULL, NULL);
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
595 if (gdb_sock < 0) {
804
59e664fa2da8 Fix a search/replace bug from the old Win32 GDB remote debugging work and replace some more print+exit combos with fatal_error
Michael Pavone <pavone@retrodev.com>
parents: 803
diff changeset
596 fatal_error("accept returned an error while listening on GDB remote debugging socket");
802
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
597 }
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
598 closesocket(listen_sock);
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
599 #endif
456
249d24973682 Initial work on GDB remote debugging support
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
600 }