aboutsummaryrefslogtreecommitdiff
path: root/recipes/openjdk/openjdk-6-6b18-1.8/shark-arm-linux-cpu-detection.patch
diff options
context:
space:
mode:
Diffstat (limited to 'recipes/openjdk/openjdk-6-6b18-1.8/shark-arm-linux-cpu-detection.patch')
-rw-r--r--recipes/openjdk/openjdk-6-6b18-1.8/shark-arm-linux-cpu-detection.patch112
1 files changed, 112 insertions, 0 deletions
diff --git a/recipes/openjdk/openjdk-6-6b18-1.8/shark-arm-linux-cpu-detection.patch b/recipes/openjdk/openjdk-6-6b18-1.8/shark-arm-linux-cpu-detection.patch
new file mode 100644
index 0000000..b4a635e
--- /dev/null
+++ b/recipes/openjdk/openjdk-6-6b18-1.8/shark-arm-linux-cpu-detection.patch
@@ -0,0 +1,112 @@
+Index: icedtea6-1.8/ports/hotspot/src/share/vm/shark/sharkCompiler.cpp
+===================================================================
+--- icedtea6-1.8.orig/ports/hotspot/src/share/vm/shark/sharkCompiler.cpp 2010-07-14 16:42:48.412103129 +0200
++++ icedtea6-1.8/ports/hotspot/src/share/vm/shark/sharkCompiler.cpp 2010-07-14 16:50:51.680282178 +0200
+@@ -32,6 +32,95 @@
+
+ #if SHARK_LLVM_VERSION >= 27
+ namespace {
++
++#if defined(__arm__) && defined(__linux__)
++#include <fcntl.h>
++#include <linux/auxvec.h>
++#include <asm/hwcap.h>
++#define VECBUFF_SIZE 32
++
++bool TestARMLinuxHWCAP(int feature) {
++ int fd;
++ unsigned vecs[VECBUFF_SIZE];
++ unsigned *p;
++ int i, n;
++ int rc;
++
++ rc = 0;
++ fd = open("/proc/self/auxv", O_RDONLY);
++ if (fd < 0) return 0;
++ do {
++ n = read(fd, vecs, VECBUFF_SIZE * sizeof(unsigned));
++ p = vecs;
++ i = n/8;
++ while (--i >=0) {
++ unsigned tag = *p++;
++ unsigned value = *p++;
++ if (tag == 0) goto fini;
++ if(tag == AT_HWCAP && (value & feature)) {
++ rc = 1;
++ goto fini;
++ }
++ }
++ } while (n == VECBUFF_SIZE * sizeof(unsigned));
++fini:
++ close(fd);
++ return rc;
++}
++
++char* TestARMLinuxAT(int auxvec) {
++ int fd;
++ unsigned vecs[VECBUFF_SIZE];
++ unsigned *p;
++ int i, n;
++ char* rc;
++
++ rc = 0;
++ fd = open("/proc/self/auxv", O_RDONLY);
++ if (fd < 0) return 0;
++ do {
++ n = read(fd, vecs, VECBUFF_SIZE * sizeof(unsigned));
++ p = vecs;
++ i = n/8;
++ while (--i >=0) {
++ unsigned tag = *p++;
++ unsigned value = *p++;
++ if (tag == 0) goto fini;
++ if(tag == (unsigned) auxvec ) {
++ rc = (char*)value;
++ goto fini;
++ }
++ }
++ } while (n == VECBUFF_SIZE * sizeof(unsigned));
++fini:
++ close(fd);
++ return rc;
++}
++
++bool getARMHostCPUFeatures(StringMap<bool> &Features) {
++ // FIXME LLVM PR6561 // Features["neon"]=TestARMLinuxHWCAP(HWCAP_NEON);
++ // FIXME ARMv6t2 JIT is not yet supported // Features["thumb2"]=TestARMLinuxHWCAP(HWCAP_THUMBEE);
++ Features["vfp2"]=TestARMLinuxHWCAP(HWCAP_VFP);
++
++ std::string testArchKey(TestARMLinuxAT(AT_PLATFORM));
++
++ StringMap<std::string> archLinuxToLLVMMap;
++ archLinuxToLLVMMap["v4l"]="v4t";
++ archLinuxToLLVMMap["v5l"]="v5t";
++ archLinuxToLLVMMap["v6l"]="v6";
++ archLinuxToLLVMMap["v7l"]="v7a";
++
++ llvm::StringMapIterator<std::string> resultIterator(archLinuxToLLVMMap.find(
++ testArchKey));
++ if(resultIterator->first()) {
++ std::string arch(resultIterator->second);
++ Features[arch]=true;
++ }
++
++ return true;
++}
++#endif
++
+ cl::opt<std::string>
+ MCPU("mcpu");
+
+@@ -64,7 +154,11 @@
+ #if SHARK_LLVM_VERSION >= 27
+ // Finetune LLVM for the current host CPU.
+ StringMap<bool> Features;
++#if defined(__arm__) && defined(__linux__)
++ bool gotCpuFeatures = getARMHostCPUFeatures(Features);
++#else
+ bool gotCpuFeatures = llvm::sys::getHostCPUFeatures(Features);
++#endif
+ std::string cpu("-mcpu=" + llvm::sys::getHostCPUName());
+
+ std::vector<const char*> args;