| 1 | https://sources.debian.org/data/main/p/picprog/1.9.1-3/debian/patches/20_iopl.patch
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| 2 |
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| 3 | Description: Avoid some functions in some architectures
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| 4 | Upstream uses iopl() function and other architecture-dependent
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| 5 | codes. This patch adds building switches to avoid them in
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| 6 | some architectures.
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| 7 | Author: Koichi Akabe <[email protected]>
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| 8 | Last-Update: 2011-11-30
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| 9 |
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| 10 | |
| 11 | |
| 12 | @@ -38,7 +38,12 @@
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| 13 | #include <ctime>
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| 14 |
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| 15 | #include <sys/ioctl.h>
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| 16 | -#include <sys/io.h>
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| 17 | +
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| 18 | +#if defined(__i386__) || defined(__x86_64__)
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| 19 | + #include <sys/io.h>
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| 20 | + #define HAVE_IOPL
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| 21 | +#endif
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| 22 | +
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| 23 | #include <fcntl.h>
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| 24 | #include <sys/time.h>
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| 25 | #include <unistd.h>
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| 26 | @@ -160,8 +165,12 @@
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| 27 | // Not root. Cannot use realtime scheduling.
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| 28 | use_nanosleep = 0;
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| 29 | }
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| 30 | +#ifdef HAVE_IOPL
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| 31 | if (iopl (3))
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| 32 | disable_interrupts = 0;
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| 33 | +#else
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| 34 | + disable_interrupts = 0;
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| 35 | +#endif
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| 36 |
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| 37 | #ifdef CPU_SETSIZE
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| 38 | // When computing the delay loops, we do not want the cpu's to change.
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| 39 | @@ -403,13 +412,17 @@
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| 40 | {
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| 41 | struct timeval tv1, tv2;
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| 42 | gettimeofday (&tv1, 0);
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| 43 | +#if defined(__i386__) or defined(__x86_64__)
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| 44 | if (tsc_1000ns > 1 && disable_interrupts)
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| 45 | asm volatile("pushf; cli");
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| 46 | +#endif
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| 47 | set_clock_data (1, b); // set data, clock up
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| 48 | delay (cable_delay);
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| 49 | set_clock_data (0, b); // clock down
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| 50 | +#if defined(__i386__) or defined(__x86_64__)
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| 51 | if (tsc_1000ns > 1 && disable_interrupts)
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| 52 | asm volatile("popf");
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| 53 | +#endif
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| 54 | gettimeofday (&tv2, 0);
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| 55 |
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| 56 | // We may have spent a long time in an interrupt or in another task
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| 57 | @@ -428,13 +441,17 @@
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| 58 | {
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| 59 | struct timeval tv1, tv2;
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| 60 | gettimeofday (&tv1, 0);
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| 61 | +#if defined(__i386__) or defined(__x86_64__)
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| 62 | if (tsc_1000ns > 1 && disable_interrupts)
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| 63 | asm volatile("pushf; cli");
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| 64 | +#endif
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| 65 | set_clock_data (1, 1); // clock up
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| 66 | delay (cable_delay);
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| 67 | set_clock_data (0, 1); // set data up, clock down
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| 68 | +#if defined(__i386__) or defined(__x86_64__)
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| 69 | if (tsc_1000ns > 1 && disable_interrupts)
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| 70 | asm volatile("popf");
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| 71 | +#endif
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| 72 | gettimeofday (&tv2, 0);
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| 73 |
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| 74 | // We may have spent a long time in an interrupt or in another task
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