Mercurial > repos > blastem
annotate termhelper.c @ 999:238141756e67
Set sprite overflow flag if we completely consume sprite rendering capacity for the line even if there is nothing left to draw. This graphical corruption in the vertical stretching scroll section. Needs hardware confirmation.
author | Michael Pavone <pavone@retrodev.com> |
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date | Sat, 30 Apr 2016 16:19:19 -0700 |
parents | 792be135d3af |
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rev | line source |
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794
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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1 #include <sys/types.h> |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
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2 #include <sys/stat.h> |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
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3 #include <fcntl.h> |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
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4 #include <unistd.h> |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
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parents:
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5 #include <stdlib.h> |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
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6 #include "terminal.h" |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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7 |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
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8 char buf[4096]; |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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9 |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
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10 void copy_data(int to, int from) |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
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11 { |
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12 ssize_t bytes = read(from, buf, sizeof(buf)); |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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13 while (bytes > 0) |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
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14 { |
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15 ssize_t written = write(to, buf, bytes); |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
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16 if (written == -1) { |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
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17 exit(1); |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
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18 } |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
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19 bytes -= written; |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
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20 } |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
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21 } |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
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22 |
792be135d3af
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Michael Pavone <pavone@retrodev.com>
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23 int main(int argc, char **argv) |
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24 { |
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25 //these will block so order is important |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
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26 int input_fd = open(INPUT_PATH, O_WRONLY); |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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27 int output_fd = open(OUTPUT_PATH, O_RDONLY); |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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28 fd_set read_fds; |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
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29 FD_ZERO(&read_fds); |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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30 for (;;) |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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31 { |
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32 FD_SET(STDIN_FILENO, &read_fds); |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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33 FD_SET(output_fd, &read_fds); |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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34 select(output_fd+1, &read_fds, NULL, NULL, NULL); |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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35 |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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36 if (FD_ISSET(STDIN_FILENO, &read_fds)) { |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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37 copy_data(input_fd, STDIN_FILENO); |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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38 } |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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39 if (FD_ISSET(output_fd, &read_fds)) { |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
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40 copy_data(STDOUT_FILENO, output_fd); |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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41 } |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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42 } |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
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43 return 0; |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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44 } |