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annotate gdb_remote.c @ 2107:f80c6111e1ae

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Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
author Michael Pavone <pavone@retrodev.com>
date Sat, 12 Feb 2022 15:20:43 -0800
parents 3a46ff899fa6
children 8554751f17b5
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 #include <unistd.h>
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22 #endif
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23
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24 #include "gdb_remote.h"
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25 #include "68kinst.h"
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26 #include "debug.h"
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27 #include "util.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 void hex_32(uint32_t num, char * out)
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54 {
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55 for (int32_t shift = 28; shift >= 0; shift -= 4)
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56 {
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57 uint8_t nibble = num >> shift & 0xF;
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58 *(out++) = nibble > 9 ? nibble - 0xA + 'A' : nibble + '0';
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59 }
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60 }
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61
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62 void hex_16(uint16_t num, char * out)
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63 {
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64 for (int16_t shift = 14; shift >= 0; shift -= 4)
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65 {
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66 uint8_t nibble = num >> shift & 0xF;
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67 *(out++) = nibble > 9 ? nibble - 0xA + 'A' : nibble + '0';
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68 }
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69 }
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70
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71 void hex_8(uint8_t num, char * out)
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72 {
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73 uint8_t nibble = num >> 4;
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74 *(out++) = nibble > 9 ? nibble - 0xA + 'A' : nibble + '0';
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75 nibble = num & 0xF;
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76 *out = nibble > 9 ? nibble - 0xA + 'A' : nibble + '0';
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77 }
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78
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79 void gdb_calc_checksum(char * command, char *out)
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80 {
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81 uint8_t checksum = 0;
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82 while (*command)
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83 {
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84 checksum += *(command++);
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85 }
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86 hex_8(checksum, out);
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87 }
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88
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89 void write_or_die(int fd, const void *buf, size_t count)
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90 {
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91 if (GDB_WRITE(fd, buf, count) < count) {
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92 fatal_error("Error writing to stdout\n");
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93 }
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94 }
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95
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96 void gdb_send_command(char * command)
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97 {
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98 char end[3];
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99 write_or_die(GDB_OUT_FD, "$", 1);
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100 write_or_die(GDB_OUT_FD, command, strlen(command));
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101 end[0] = '#';
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102 gdb_calc_checksum(command, end+1);
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103 write_or_die(GDB_OUT_FD, end, 3);
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104 dfprintf(stderr, "Sent $%s#%c%c\n", command, end[1], end[2]);
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105 }
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106
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107 uint32_t calc_status(m68k_context * context)
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108 {
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109 uint32_t status = context->status << 3;
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110 for (int i = 0; i < 5; i++)
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111 {
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112 status <<= 1;
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113 status |= context->flags[i];
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114 }
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115 return status;
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116 }
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117
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118 void update_status(m68k_context * context, uint16_t value)
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119 {
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120 context->status = value >> 8;
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121 for (int i = 4; i >= 0; i--)
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122 {
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123 context->flags[i] = value & 1;
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124 value >>= 1;
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125 }
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
126 }
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
127
1965
3a46ff899fa6 More correct implementation of byte printing in builtin debugger. Fix GDB debugger to use helper in backend.c for reading bytes
Michael Pavone <pavone@retrodev.com>
parents: 1963
diff changeset
128 static uint8_t m68k_read_byte(m68k_context *context, uint32_t address)
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
129 {
1965
3a46ff899fa6 More correct implementation of byte printing in builtin debugger. Fix GDB debugger to use helper in backend.c for reading bytes
Michael Pavone <pavone@retrodev.com>
parents: 1963
diff changeset
130 //TODO: share this implementation with builtin debugger
3a46ff899fa6 More correct implementation of byte printing in builtin debugger. Fix GDB debugger to use helper in backend.c for reading bytes
Michael Pavone <pavone@retrodev.com>
parents: 1963
diff changeset
131 return read_byte(address, (void **)context->mem_pointers, &context->options->gen, context);
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
132 }
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
133
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1329
diff changeset
134 void m68k_write_byte(m68k_context * context, uint32_t address, uint8_t value)
530
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
135 {
801
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
136 genesis_context *gen = context->system;
530
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
137 //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
138 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
139 if (word) {
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
140 if (address & 1) {
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
141 *word = (*word & 0xFF00) | value;
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
142 } else {
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
143 *word = (*word & 0xFF) | value << 8;
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
144 }
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
145 //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
146 if (address >= 0xE00000) {
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
147 m68k_handle_code_write(address, context);
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
148 }
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
149 return;
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
150 }
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
151 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
152 gen->zram[address & 0x1FFF] = value;
530
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
153 genesis_context * gen = context->system;
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1329
diff changeset
154 #if !defined(NO_Z80) && !defined(NEW_CORE)
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
155 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
156 #endif
530
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
157 return;
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
158 } else {
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
159 return;
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
160 }
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
161 }
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
162
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
163 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
164 {
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
165 char send_buf[512];
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
166 dfprintf(stderr, "Received command %s\n", command);
2107
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
167 debug_root *root = find_root(context);
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
168 if (!root) {
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
169 fatal_error("Could not find debug root for CPU %p\n", context);
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
170 }
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
171 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
172 {
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
173
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
174 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
175 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
176 //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
177 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
178 }
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
179 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
180 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
181 break;
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
182 case 's': {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
183 if (*(command+1) != 0) {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
184 //TODO: implement resuming at an arbitrary address
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
185 goto not_impl;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
186 }
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
187 m68kinst inst;
801
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
188 genesis_context *gen = context->system;
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
189 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
190 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
191 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
192 }
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
193 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
194 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
195
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
196 if (inst.op == M68K_RTS) {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
197 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
198 } 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
199 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
200 } else if(m68k_is_branch(&inst)) {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
201 if (inst.op == M68K_BCC && inst.extra.cond != COND_TRUE) {
2107
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
202 root->branch_f = after;
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
203 root->branch_t = m68k_branch_target(&inst, context->dregs, context->aregs) & 0xFFFFFF;
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
204 insert_breakpoint(context, root->branch_t, gdb_debug_enter);
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
205 } else if(inst.op == M68K_DBCC && inst.extra.cond != COND_FALSE) {
2107
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
206 root->branch_t = after;
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
207 root->branch_f = m68k_branch_target(&inst, context->dregs, context->aregs) & 0xFFFFFF;
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
208 insert_breakpoint(context, root->branch_f, gdb_debug_enter);
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
209 } else {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
210 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
211 }
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
212 }
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
213 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
214
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
215 cont = 1;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
216 expect_break_response = 1;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
217 break;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
218 }
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
219 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
220 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
221 //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
222 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
223 } 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
224 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
225 }
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
226 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
227 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
228 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
229 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
230 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
231 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
232 bp_def *new_bp = malloc(sizeof(bp_def));
2107
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
233 new_bp->next = root->breakpoints;
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
234 new_bp->address = address;
2107
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
235 new_bp->index = root->bp_index++;
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
236 root->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
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 //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
240 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
241 }
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 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
243 }
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 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
245 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
246 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
247 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
248 remove_breakpoint(context, address);
2107
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
249 bp_def **found = find_breakpoint(&root->breakpoints, address);
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
250 if (*found)
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
251 {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
252 bp_def * to_remove = *found;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
253 *found = to_remove->next;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
254 free(to_remove);
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
255 }
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
256 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
257 } 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
258 //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
259 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
260 }
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 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
262 }
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 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
264 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
265 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
266 {
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
267 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
268 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
269 }
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
270 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
271 {
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 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
273 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
274 }
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 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
276 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
277 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
278 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
279 *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
280 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
281 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
282 }
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 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
284 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
285 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
286 uint32_t size = strtoul(rest+1, NULL, 16);
757
483f7e7926a6 More clang warning cleanup
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
287 if (size > (sizeof(send_buf)-1)/2) {
483f7e7926a6 More clang warning cleanup
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
288 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
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 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
291 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
292 {
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1329
diff changeset
293 hex_8(m68k_read_byte(context, address), cur);
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
294 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
295 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
296 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
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 *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
299 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
300 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
301 }
530
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
302 case 'M': {
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
303 char * rest;
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
304 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
305 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
306
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
307 char *cur = rest+1;
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
308 while (size)
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
309 {
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
310 char tmp[3];
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
311 tmp[0] = *(cur++);
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
312 tmp[1] = *(cur++);
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
313 tmp[2] = 0;
1752
d6d4c006a7b3 Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents: 1329
diff changeset
314 m68k_write_byte(context, address, strtoul(tmp, NULL, 16));
530
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
315 address++;
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
316 size--;
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
317 }
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
318 gdb_send_command("OK");
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
319 break;
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
320 }
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
321 case 'X':
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
322 //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
323 gdb_send_command("");
92606a032d56 Implement memory writes in GDB remote debugging stub
Mike Pavone <pavone@retrodev.com>
parents: 526
diff changeset
324 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
325 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
326 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
327
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
328 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
329 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
330 } 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
331 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
332 } 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
333 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
334 } 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
335 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
336 } 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
337 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
338 }
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
339 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
340 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
341 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
342 }
526
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
343 case 'P': {
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
344 char *after = NULL;
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
345 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
346 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
347
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
348 if (reg < 8) {
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
349 context->dregs[reg] = value;
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
350 } else if (reg < 16) {
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
351 context->aregs[reg-8] = value;
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
352 } else if (reg == 16) {
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
353 update_status(context, value);
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
354 } else {
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
355 //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
356 gdb_send_command("E01");
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
357 break;
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
358 }
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
359 gdb_send_command("OK");
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
360 break;
6fe73296938a Support setting registers in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 525
diff changeset
361 }
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
362 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
363 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
364 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
365 gdb_send_command(send_buf);
1166
73e36dac5be7 Fix GDB remote protocol support
Michael Pavone <pavone@retrodev.com>
parents: 1111
diff changeset
366 } 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
367 //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
368 //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
369 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
370 } 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
371 //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
372 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
373 } 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
374 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
375 } 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
376 //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
377 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
378 } 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
379 //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
380 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
381 } 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
382 //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
383 gdb_send_command("QC1");
73e36dac5be7 Fix GDB remote protocol support
Michael Pavone <pavone@retrodev.com>
parents: 1111
diff changeset
384 } else if (!strcmp("fThreadInfo", command + 1)) {
73e36dac5be7 Fix GDB remote protocol support
Michael Pavone <pavone@retrodev.com>
parents: 1111
diff changeset
385 //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
386 gdb_send_command("m1");
73e36dac5be7 Fix GDB remote protocol support
Michael Pavone <pavone@retrodev.com>
parents: 1111
diff changeset
387 } else if (!strcmp("sThreadInfo", command + 1)) {
73e36dac5be7 Fix GDB remote protocol support
Michael Pavone <pavone@retrodev.com>
parents: 1111
diff changeset
388 gdb_send_command("l");
1963
495569c1dc61 Add support for printing a byte from memory in native debugger. Add stubs for GDB commands qThreadExtraInfo and qP
Eric Fry <yuv422@users.noreply.github.com>
parents: 1949
diff changeset
389 } else if (!memcmp("ThreadExtraInfo", command+1, strlen("ThreadExtraInfo"))) {
495569c1dc61 Add support for printing a byte from memory in native debugger. Add stubs for GDB commands qThreadExtraInfo and qP
Eric Fry <yuv422@users.noreply.github.com>
parents: 1949
diff changeset
390 gdb_send_command("");
495569c1dc61 Add support for printing a byte from memory in native debugger. Add stubs for GDB commands qThreadExtraInfo and qP
Eric Fry <yuv422@users.noreply.github.com>
parents: 1949
diff changeset
391 } else if (command[1] == 'P') {
495569c1dc61 Add support for printing a byte from memory in native debugger. Add stubs for GDB commands qThreadExtraInfo and qP
Eric Fry <yuv422@users.noreply.github.com>
parents: 1949
diff changeset
392 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
393 } 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
394 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
395 }
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 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
397 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
398 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
399 gdb_send_command("vCont;c;C;s;S");
1166
73e36dac5be7 Fix GDB remote protocol support
Michael Pavone <pavone@retrodev.com>
parents: 1111
diff changeset
400 } else if (!strcmp("MustReplyEmpty", command + 1)) {
73e36dac5be7 Fix GDB remote protocol support
Michael Pavone <pavone@retrodev.com>
parents: 1111
diff changeset
401 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
402 } 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
403 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
404 {
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 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
406 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
407 //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
408 //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
409 //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
410 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
411 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
412 break;
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
413 case 's':
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
414 case 'S': {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
415 m68kinst inst;
801
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
416 genesis_context *gen = context->system;
092524bb2e8f Fix GDB remote debugging support
Michael Pavone <pavone@retrodev.com>
parents: 792
diff changeset
417 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
418 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
419 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
420 }
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
421 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
422 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
423
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
424 if (inst.op == M68K_RTS) {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
425 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
426 } 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
427 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
428 } else if(m68k_is_branch(&inst)) {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
429 if (inst.op == M68K_BCC && inst.extra.cond != COND_TRUE) {
2107
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
430 root->branch_f = after;
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
431 root->branch_t = m68k_branch_target(&inst, context->dregs, context->aregs) & 0xFFFFFF;
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
432 insert_breakpoint(context, root->branch_t, gdb_debug_enter);
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
433 } else if(inst.op == M68K_DBCC && inst.extra.cond != COND_FALSE) {
2107
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
434 root->branch_t = after;
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
435 root->branch_f = m68k_branch_target(&inst, context->dregs, context->aregs) & 0xFFFFFF;
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
436 insert_breakpoint(context, root->branch_f, gdb_debug_enter);
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
437 } else {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
438 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
439 }
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
440 }
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
441 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
442
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
443 cont = 1;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
444 expect_break_response = 1;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
445 break;
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
446 }
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
447 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
448 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
449 }
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
450 } 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
451 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
452 }
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
453 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
454 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
455 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
456 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
457 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
458 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
459
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 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
462 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
463 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
464 }
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
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
466 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
467 {
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
468 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
469 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
470 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
471 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
472 }
2107
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
473 debug_root *root = find_root(context);
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
474 if (!root) {
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
475 fatal_error("Could not find debug root for CPU %p\n", context);
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
476 }
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
477 if ((pc & 0xFFFFFF) == root->branch_t) {
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
478 bp_def ** f_bp = find_breakpoint(&root->breakpoints, root->branch_f);
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
479 if (!*f_bp) {
2107
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
480 remove_breakpoint(context, root->branch_f);
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
481 }
2107
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
482 root->branch_t = root->branch_f = 0;
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
483 } else if((pc & 0xFFFFFF) == root->branch_f) {
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
484 bp_def ** t_bp = find_breakpoint(&root->breakpoints, root->branch_t);
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
485 if (!*t_bp) {
2107
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
486 remove_breakpoint(context, root->branch_t);
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
487 }
2107
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
488 root->branch_t = root->branch_f = 0;
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
489 }
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
490 //Check if this is a user set breakpoint, or just a temporary one
2107
f80c6111e1ae Move some debugger state to a per-CPU structure. Add m command for returning to main CPU from sub CPU
Michael Pavone <pavone@retrodev.com>
parents: 1965
diff changeset
491 bp_def ** this_bp = find_breakpoint(&root->breakpoints, pc & 0xFFFFFF);
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
492 if (!*this_bp) {
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
493 remove_breakpoint(context, pc & 0xFFFFFF);
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
494 }
456
249d24973682 Initial work on GDB remote debugging support
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
495 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
496 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
497 uint8_t partial = 0;
456
249d24973682 Initial work on GDB remote debugging support
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
498 while(!cont)
249d24973682 Initial work on GDB remote debugging support
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
499 {
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
500 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
501 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
502 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
503 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
504 }
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
505 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
506 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
507 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
508 } 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
509 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
510 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
511 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
512 }
1245
42fb3ee1e92c Fix direct usage of read rather than GDB_READ in gdb_remote.c
Michael Pavone <pavone@retrodev.com>
parents: 1189
diff changeset
513 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
514 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
515 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
516 }
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 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
518 {
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 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
520 {
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 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
522 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
523 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
524 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 //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
528 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
529 //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
530 //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
531 *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
532 //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
533 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
534 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
535 }
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
536 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
537 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
538 }
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 } 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
540 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
541 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
542 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
543 }
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
544 } else {
525
62860044337d Support single stepping in gdb remote debugger
Mike Pavone <pavone@retrodev.com>
parents: 515
diff changeset
545 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
546 }
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 }
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
548 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
549 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
550 }
456
249d24973682 Initial work on GDB remote debugging support
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
551 }
249d24973682 Initial work on GDB remote debugging support
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
552 }
249d24973682 Initial work on GDB remote debugging support
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
553
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
554 void gdb_remote_init(void)
456
249d24973682 Initial work on GDB remote debugging support
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
555 {
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
556 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
557 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
558 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
559 #ifdef _WIN32
1949
5a76a7373823 Get WIP net play code compiling on Windows and cleanup some unistd.h includes
Michael Pavone <pavone@retrodev.com>
parents: 1945
diff changeset
560 socket_init();
802
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
561
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
562 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
563 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
564 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
565 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
566 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
567 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
568
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
569 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
570 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
571 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
572 }
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
573 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
574 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
575 }
1945
ba7231d2411c Fix addrinfo leak in GDB remote debug support
Michael Pavone <pavone@retrodev.com>
parents: 1792
diff changeset
576 freeaddrinfo(result);
802
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
577 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
578 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
579 }
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
580 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
581 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
582 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
583 }
1949
5a76a7373823 Get WIP net play code compiling on Windows and cleanup some unistd.h includes
Michael Pavone <pavone@retrodev.com>
parents: 1945
diff changeset
584 socket_close(listen_sock);
1792
52a47611a273 Avoid printing a bunch of junk to stdout when GDB remote debugging is enabled as this can confuse GDB
Michael Pavone <pavone@retrodev.com>
parents: 1752
diff changeset
585 #else
52a47611a273 Avoid printing a bunch of junk to stdout when GDB remote debugging is enabled as this can confuse GDB
Michael Pavone <pavone@retrodev.com>
parents: 1752
diff changeset
586 disable_stdout_messages();
802
6811f601008f Old changes for GDB remote debugging on Windows I forgot to commit
Michael Pavone <pavone@retrodev.com>
parents: 565
diff changeset
587 #endif
456
249d24973682 Initial work on GDB remote debugging support
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
588 }