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https://sources.debian.org/data/main/p/picprog/1.9.1-3/debian/patches/20_iopl.patch
Description: Avoid some functions in some architectures
Upstream uses iopl() function and other architecture-dependent
codes. This patch adds building switches to avoid them in
some architectures.
Author: Koichi Akabe <vbkaisetsu@gmail.com>
Last-Update: 2011-11-30
--- picprog-1.9.1.orig/picport.cc
+++ picprog-1.9.1/picport.cc
@@ -38,7 +38,12 @@
#include <ctime>
#include <sys/ioctl.h>
-#include <sys/io.h>
+
+#if defined(__i386__) || defined(__x86_64__)
+ #include <sys/io.h>
+ #define HAVE_IOPL
+#endif
+
#include <fcntl.h>
#include <sys/time.h>
#include <unistd.h>
@@ -160,8 +165,12 @@
// Not root. Cannot use realtime scheduling.
use_nanosleep = 0;
}
+#ifdef HAVE_IOPL
if (iopl (3))
disable_interrupts = 0;
+#else
+ disable_interrupts = 0;
+#endif
#ifdef CPU_SETSIZE
// When computing the delay loops, we do not want the cpu's to change.
@@ -403,13 +412,17 @@
{
struct timeval tv1, tv2;
gettimeofday (&tv1, 0);
+#if defined(__i386__) or defined(__x86_64__)
if (tsc_1000ns > 1 && disable_interrupts)
asm volatile("pushf; cli");
+#endif
set_clock_data (1, b); // set data, clock up
delay (cable_delay);
set_clock_data (0, b); // clock down
+#if defined(__i386__) or defined(__x86_64__)
if (tsc_1000ns > 1 && disable_interrupts)
asm volatile("popf");
+#endif
gettimeofday (&tv2, 0);
// We may have spent a long time in an interrupt or in another task
@@ -428,13 +441,17 @@
{
struct timeval tv1, tv2;
gettimeofday (&tv1, 0);
+#if defined(__i386__) or defined(__x86_64__)
if (tsc_1000ns > 1 && disable_interrupts)
asm volatile("pushf; cli");
+#endif
set_clock_data (1, 1); // clock up
delay (cable_delay);
set_clock_data (0, 1); // set data up, clock down
+#if defined(__i386__) or defined(__x86_64__)
if (tsc_1000ns > 1 && disable_interrupts)
asm volatile("popf");
+#endif
gettimeofday (&tv2, 0);
// We may have spent a long time in an interrupt or in another task