1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
--- a/src/3rdparty/webkit/JavaScriptCore/runtime/Collector.cpp 2010-09-10 11:05:22.000000000 +0200
+++ b/src/3rdparty/webkit/JavaScriptCore/runtime/Collector.cpp 2010-11-15 16:39:53.000000000 +0100
@@ -70,6 +70,19 @@
#endif
#include <unistd.h>
+#if defined(__UCLIBC__)
+// versions of uClibc 0.9.32 with linuxthreads.old and below do not have
+// pthread_getattr_np or pthread_attr_getstack.
+#if __UCLIBC_MAJOR__ == 0 && \
+ (__UCLIBC_MINOR__ < 9 || \
+ (__UCLIBC_MINOR__ == 9 && __UCLIBC_SUBLEVEL__ <= 32)) && \
+ defined(__LINUXTHREADS_OLD__)
+#define UCLIBC_USE_PROC_SELF_MAPS 1
+#include <stdio_ext.h>
+extern int* __libc_stack_end;
+#endif
+#endif
+
#if OS(SOLARIS)
#include <thread.h>
#else
@@ -580,6 +592,37 @@
get_thread_info(find_thread(NULL), &threadInfo);
return threadInfo.stack_end;
#elif OS(UNIX)
+#ifdef UCLIBC_USE_PROC_SELF_MAPS
+ // Read /proc/self/maps and locate the line whose address
+ // range contains __libc_stack_end.
+ FILE* file = fopen("/proc/self/maps", "r");
+ if (!file)
+ return 0;
+ __fsetlocking(file, FSETLOCKING_BYCALLER);
+ char* line = 0;
+ size_t lineLen = 0;
+ while (!feof_unlocked(file)) {
+ if (getdelim(&line, &lineLen, '\n', file) <= 0)
+ break;
+
+ long from;
+ long to;
+ if (sscanf (line, "%lx-%lx", &from, &to) != 2)
+ continue;
+ if (from <= (long)__libc_stack_end && (long)__libc_stack_end < to) {
+ fclose(file);
+ free(line);
+#ifdef _STACK_GROWS_UP
+ return (void *)from;
+#else
+ return (void *)to;
+#endif
+ }
+ }
+ fclose(file);
+ free(line);
+ return 0;
+#else
AtomicallyInitializedStatic(Mutex&, mutex = *new Mutex);
MutexLocker locker(mutex);
static void* stackBase = 0;
@@ -603,6 +646,7 @@
stackThread = thread;
}
return static_cast<char*>(stackBase) + stackSize;
+#endif
#elif OS(WINCE)
AtomicallyInitializedStatic(Mutex&, mutex = *new Mutex);
MutexLocker locker(mutex);
|
