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update bootimage instructions in readme.txt

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This commit is contained in:
Joel Dice 2011-09-20 20:03:16 -06:00
parent 559af69269
commit 70c65c7053
1 changed files with 29 additions and 7 deletions
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36
readme.txt
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@ -329,8 +329,9 @@ Embedding
The following series of commands illustrates how to produce a
stand-alone executable out of a Java application using Avian.
Note: if you are building on Cygwin, add -mno-cygwin to each of the
compile and link commands below.
Note: if you are building on Cygwin, prepend "x86_64-w64-mingw32-" or
"i686-w64-mingw32-" to the ar, g++, gcc, strip, and dlltool commands
below (e.g. x86_64-w64-mingw32-gcc).
Step 1: Build Avian, create a new directory, and populate it with the
VM object files and bootstrap classpath jar.
@ -550,16 +551,22 @@ Step 5: Run ProGuard with stage1 as input and stage2 as output.
(note: pass -dontusemixedcaseclassnames to ProGuard when building on
systems with case-insensitive filesystems such as Windows and OS X)
Step 6: Build the boot image.
Step 6: Build the boot and code images.
$ ../build/linux-i386-bootimage/bootimage-generator stage2 bootimage.bin
$ ../build/linux-i386-bootimage/bootimage-generator stage2 \
bootimage.bin codeimage.bin
Step 7: Make an object file out of the boot image.
Step 7: Make an object file out of the boot and code images.
$ ../build/linux-i386-bootimage/binaryToObject \
bootimage.bin bootimage-bin.o \
_binary_bootimage_bin_start _binary_bootimage_bin_end \
linux i386 8 writable executable
linux i386 8 writable
$ ../build/linux-i386-bootimage/binaryToObject \
codeimage.bin codeimage-bin.o \
_binary_codeimage_bin_start _binary_codeimage_bin_end \
linux i386 8 executable
Step 8: Write a driver which starts the VM and runs the desired main
method. Note the bootimageBin function, which will be called by the
@ -583,8 +590,10 @@ containing them. See the previous example for instructions.
#if (! defined __x86_64__) && ((defined __MINGW32__) || (defined _MSC_VER))
# define BOOTIMAGE_BIN(x) binary_bootimage_bin_##x
# define CODEIMAGE_BIN(x) binary_codeimage_bin_##x
#else
# define BOOTIMAGE_BIN(x) _binary_bootimage_bin_##x
# define CODEIMAGE_BIN(x) _binary_codeimage_bin_##x
#endif
extern "C" {
@ -599,6 +608,16 @@ extern "C" {
return BOOTIMAGE_BIN(start);
}
extern const uint8_t CODEIMAGE_BIN(start)[];
extern const uint8_t CODEIMAGE_BIN(end)[];
EXPORT const uint8_t*
codeimageBin(unsigned* size)
{
*size = CODEIMAGE_BIN(end) - CODEIMAGE_BIN(start);
return CODEIMAGE_BIN(start);
}
} // extern "C"
int
@ -606,7 +625,7 @@ main(int ac, const char** av)
{
JavaVMInitArgs vmArgs;
vmArgs.version = JNI_VERSION_1_2;
vmArgs.nOptions = 1;
vmArgs.nOptions = 2;
vmArgs.ignoreUnrecognized = JNI_TRUE;
JavaVMOption options[vmArgs.nOptions];
@ -615,6 +634,9 @@ main(int ac, const char** av)
options[0].optionString
= const_cast<char*>("-Davian.bootimage=bootimageBin");
options[1].optionString
= const_cast<char*>("-Davian.codeimage=codeimageBin");
JavaVM* vm;
void* env;
JNI_CreateJavaVM(&vm, &env, &vmArgs);