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Undo removal of the runtime libraries. While this may have been a bit

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premature, these libraries will be going away for the 2.0 release. Other
arrangements for profiling, gc, etc. should be made in the next few months.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31807 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer 2006-11-17 03:32:33 +00:00
parent b2b9c20b61
commit 8b2e1419cf
53 changed files with 3282 additions and 36 deletions
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13
Makefile
View File

@ -15,23 +15,28 @@ LEVEL := .
# 3. Build VMCore, which builds the Intrinsics.inc file used by libs.
# 4. Build libs, which are needed by llvm-config.
# 5. Build llvm-config, which determines inter-lib dependencies for tools.
# 6. Build tools, docs.
# 6. Build tools, runtime, docs.
#
DIRS := lib/System lib/Support utils lib/VMCore lib tools/llvm-config \
tools docs
tools runtime docs
OPTIONAL_DIRS := examples projects
EXTRA_DIST := test llvm.spec include win32 Xcode
include $(LEVEL)/Makefile.config
# llvm-gcc4 doesn't need runtime libs.
ifeq ($(LLVMGCC_MAJVERS),4)
DIRS := $(filter-out runtime, $(DIRS))
endif
ifeq ($(MAKECMDGOALS),libs-only)
DIRS := $(filter-out tools docs, $(DIRS))
DIRS := $(filter-out tools runtime docs, $(DIRS))
OPTIONAL_DIRS :=
endif
ifeq ($(MAKECMDGOALS),tools-only)
DIRS := $(filter-out docs, $(DIRS))
DIRS := $(filter-out runtime docs, $(DIRS))
OPTIONAL_DIRS :=
endif

5
Makefile.config.in
View File

@ -207,6 +207,11 @@ OBJ_ROOT := .
#DISABLE_ASSERTIONS = 1
@DISABLE_ASSERTIONS@
# When DEBUG_RUNTIME is enabled, the runtime libraries will retain debug
# symbols.
#DEBUG_RUNTIME = 1
@DEBUG_RUNTIME@
# When ENABLE_PROFILING is enabled, the llvm source base is built with profile
# information to allow gprof to be used to get execution frequencies.
#ENABLE_PROFILING = 1

8
Makefile.rules
View File

@ -1099,10 +1099,18 @@ $(ObjDir)/%.s: %.c $(ObjDir)/.dir $(BUILT_SOURCES)
$(Echo) "Compiling $*.c to asm for $(BuildMode) build" $(PIC_FLAG)
$(MAYBE_PIC_Compile.C) $< -o $@ -S
# make the C and C++ compilers strip debug info out of bytecode libraries.
ifdef DEBUG_RUNTIME
$(ObjectsBC): $(ObjDir)/%.bc: $(ObjDir)/%.ll $(GCCAS)
$(Echo) "Compiling $*.ll to $*.bc for $(BuildMode) build (bytecode)"
$(Verb) $(GCCAS) $< -o $@
else
$(ObjectsBC): $(ObjDir)/%.bc: $(ObjDir)/%.ll $(GCCAS)
$(Echo) "Compiling $*.ll to $*.bc for $(BuildMode) build (bytecode)"
$(Verb) $(GCCAS) -strip-debug $< -o $@
endif
#---------------------------------------------------------
# Provide rule to build .bc files from .ll sources,

16
autoconf/configure.ac
View File

@ -268,6 +268,15 @@ else
AC_SUBST(DISABLE_ASSERTIONS,[[DISABLE_ASSERTIONS=1]])
fi
dnl --enable-debug-runtime : should runtime libraries have debug symbols?
AC_ARG_ENABLE(debug-runtime,
AS_HELP_STRING([--enable-debug-runtime,Build runtime libs with debug symbols (default is NO)]),,enableval=no)
if test ${enableval} = "no" ; then
AC_SUBST(DEBUG_RUNTIME,[[]])
else
AC_SUBST(DEBUG_RUNTIME,[[DEBUG_RUNTIME=1]])
fi
dnl --enable-jit: check whether they want to enable the jit
AC_ARG_ENABLE(jit,
AS_HELP_STRING(--enable-jit,
@ -811,6 +820,7 @@ AC_CONFIG_MAKEFILE(Makefile)
AC_CONFIG_MAKEFILE(Makefile.common)
AC_CONFIG_MAKEFILE(examples/Makefile)
AC_CONFIG_MAKEFILE(lib/Makefile)
AC_CONFIG_MAKEFILE(runtime/Makefile)
AC_CONFIG_MAKEFILE(test/Makefile)
AC_CONFIG_MAKEFILE(test/Makefile.tests)
AC_CONFIG_MAKEFILE(tools/Makefile)
@ -823,6 +833,8 @@ AC_OUTPUT
dnl Warn loudly if llvm-gcc was not obviously working
if test "$llvm_cv_llvmgcc_sanity" = "no" ; then
AC_MSG_WARN([***** llvm-gcc/llvm-g++ was not found, or does not appear to be ])
AC_MSG_WARN([***** working. Please make sure you have llvm-gcc and llvm-g++ ])
AC_MSG_WARN([***** in your path before configuring LLVM.])
AC_MSG_WARN([***** working. Please make sure you have llvm-gcc and llvm-g++ in])
AC_MSG_WARN([***** your path before configuring LLVM. The runtime libraries])
AC_MSG_WARN([***** (llvm/runtime) will not be built but you should be able to])
AC_MSG_WARN([***** build the llvm tools.])
fi

88
configure vendored
View File

@ -830,6 +830,7 @@ BUILD_EXEEXT
CVSBUILD
ENABLE_OPTIMIZED
DISABLE_ASSERTIONS
DEBUG_RUNTIME
JIT
TARGET_HAS_JIT
ENABLE_DOXYGEN
@ -1519,6 +1520,7 @@ Optional Features:
--enable-FEATURE[=ARG] include FEATURE [ARG=yes]
--enable-optimized
--enable-assertions
--enable-debug-runtime
--enable-jit Enable Just In Time Compiling (default is YES)
--enable-doxygen Build doxygen documentation (default is NO)
--enable-threads Use threads if available (default is YES)
@ -4561,6 +4563,21 @@ else
fi
# Check whether --enable-debug-runtime was given.
if test "${enable_debug_runtime+set}" = set; then
enableval=$enable_debug_runtime;
else
enableval=no
fi
if test ${enableval} = "no" ; then
DEBUG_RUNTIME=
else
DEBUG_RUNTIME=DEBUG_RUNTIME=1
fi
# Check whether --enable-jit was given.
if test "${enable_jit+set}" = set; then
enableval=$enable_jit;
@ -10281,7 +10298,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<EOF
#line 10284 "configure"
#line 10301 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@ -12425,7 +12442,7 @@ ia64-*-hpux*)
;;
*-*-irix6*)
# Find out which ABI we are using.
echo '#line 12428 "configure"' > conftest.$ac_ext
echo '#line 12445 "configure"' > conftest.$ac_ext
if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
(eval $ac_compile) 2>&5
ac_status=$?
@ -14143,11 +14160,11 @@ else
-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
-e 's:$: $lt_compiler_flag:'`
(eval echo "\"\$as_me:14146: $lt_compile\"" >&5)
(eval echo "\"\$as_me:14163: $lt_compile\"" >&5)
(eval "$lt_compile" 2>conftest.err)
ac_status=$?
cat conftest.err >&5
echo "$as_me:14150: \$? = $ac_status" >&5
echo "$as_me:14167: \$? = $ac_status" >&5
if (exit $ac_status) && test -s "$ac_outfile"; then
# The compiler can only warn and ignore the option if not recognized
# So say no if there are warnings other than the usual output.
@ -14411,11 +14428,11 @@ else
-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
-e 's:$: $lt_compiler_flag:'`
(eval echo "\"\$as_me:14414: $lt_compile\"" >&5)
(eval echo "\"\$as_me:14431: $lt_compile\"" >&5)
(eval "$lt_compile" 2>conftest.err)
ac_status=$?
cat conftest.err >&5
echo "$as_me:14418: \$? = $ac_status" >&5
echo "$as_me:14435: \$? = $ac_status" >&5
if (exit $ac_status) && test -s "$ac_outfile"; then
# The compiler can only warn and ignore the option if not recognized
# So say no if there are warnings other than the usual output.
@ -14515,11 +14532,11 @@ else
-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
-e 's:$: $lt_compiler_flag:'`
(eval echo "\"\$as_me:14518: $lt_compile\"" >&5)
(eval echo "\"\$as_me:14535: $lt_compile\"" >&5)
(eval "$lt_compile" 2>out/conftest.err)
ac_status=$?
cat out/conftest.err >&5
echo "$as_me:14522: \$? = $ac_status" >&5
echo "$as_me:14539: \$? = $ac_status" >&5
if (exit $ac_status) && test -s out/conftest2.$ac_objext
then
# The compiler can only warn and ignore the option if not recognized
@ -16967,7 +16984,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<EOF
#line 16970 "configure"
#line 16987 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@ -17067,7 +17084,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<EOF
#line 17070 "configure"
#line 17087 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@ -19435,11 +19452,11 @@ else
-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
-e 's:$: $lt_compiler_flag:'`
(eval echo "\"\$as_me:19438: $lt_compile\"" >&5)
(eval echo "\"\$as_me:19455: $lt_compile\"" >&5)
(eval "$lt_compile" 2>conftest.err)
ac_status=$?
cat conftest.err >&5
echo "$as_me:19442: \$? = $ac_status" >&5
echo "$as_me:19459: \$? = $ac_status" >&5
if (exit $ac_status) && test -s "$ac_outfile"; then
# The compiler can only warn and ignore the option if not recognized
# So say no if there are warnings other than the usual output.
@ -19539,11 +19556,11 @@ else
-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
-e 's:$: $lt_compiler_flag:'`
(eval echo "\"\$as_me:19542: $lt_compile\"" >&5)
(eval echo "\"\$as_me:19559: $lt_compile\"" >&5)
(eval "$lt_compile" 2>out/conftest.err)
ac_status=$?
cat out/conftest.err >&5
echo "$as_me:19546: \$? = $ac_status" >&5
echo "$as_me:19563: \$? = $ac_status" >&5
if (exit $ac_status) && test -s out/conftest2.$ac_objext
then
# The compiler can only warn and ignore the option if not recognized
@ -21109,11 +21126,11 @@ else
-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
-e 's:$: $lt_compiler_flag:'`
(eval echo "\"\$as_me:21112: $lt_compile\"" >&5)
(eval echo "\"\$as_me:21129: $lt_compile\"" >&5)
(eval "$lt_compile" 2>conftest.err)
ac_status=$?
cat conftest.err >&5
echo "$as_me:21116: \$? = $ac_status" >&5
echo "$as_me:21133: \$? = $ac_status" >&5
if (exit $ac_status) && test -s "$ac_outfile"; then
# The compiler can only warn and ignore the option if not recognized
# So say no if there are warnings other than the usual output.
@ -21213,11 +21230,11 @@ else
-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
-e 's:$: $lt_compiler_flag:'`
(eval echo "\"\$as_me:21216: $lt_compile\"" >&5)
(eval echo "\"\$as_me:21233: $lt_compile\"" >&5)
(eval "$lt_compile" 2>out/conftest.err)
ac_status=$?
cat out/conftest.err >&5
echo "$as_me:21220: \$? = $ac_status" >&5
echo "$as_me:21237: \$? = $ac_status" >&5
if (exit $ac_status) && test -s out/conftest2.$ac_objext
then
# The compiler can only warn and ignore the option if not recognized
@ -23448,11 +23465,11 @@ else
-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
-e 's:$: $lt_compiler_flag:'`
(eval echo "\"\$as_me:23451: $lt_compile\"" >&5)
(eval echo "\"\$as_me:23468: $lt_compile\"" >&5)
(eval "$lt_compile" 2>conftest.err)
ac_status=$?
cat conftest.err >&5
echo "$as_me:23455: \$? = $ac_status" >&5
echo "$as_me:23472: \$? = $ac_status" >&5
if (exit $ac_status) && test -s "$ac_outfile"; then
# The compiler can only warn and ignore the option if not recognized
# So say no if there are warnings other than the usual output.
@ -23716,11 +23733,11 @@ else
-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
-e 's:$: $lt_compiler_flag:'`
(eval echo "\"\$as_me:23719: $lt_compile\"" >&5)
(eval echo "\"\$as_me:23736: $lt_compile\"" >&5)
(eval "$lt_compile" 2>conftest.err)
ac_status=$?
cat conftest.err >&5
echo "$as_me:23723: \$? = $ac_status" >&5
echo "$as_me:23740: \$? = $ac_status" >&5
if (exit $ac_status) && test -s "$ac_outfile"; then
# The compiler can only warn and ignore the option if not recognized
# So say no if there are warnings other than the usual output.
@ -23820,11 +23837,11 @@ else
-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
-e 's:$: $lt_compiler_flag:'`
(eval echo "\"\$as_me:23823: $lt_compile\"" >&5)
(eval echo "\"\$as_me:23840: $lt_compile\"" >&5)
(eval "$lt_compile" 2>out/conftest.err)
ac_status=$?
cat out/conftest.err >&5
echo "$as_me:23827: \$? = $ac_status" >&5
echo "$as_me:23844: \$? = $ac_status" >&5
if (exit $ac_status) && test -s out/conftest2.$ac_objext
then
# The compiler can only warn and ignore the option if not recognized
@ -33414,6 +33431,9 @@ ac_config_commands="$ac_config_commands examples/Makefile"
ac_config_commands="$ac_config_commands lib/Makefile"
ac_config_commands="$ac_config_commands runtime/Makefile"
ac_config_commands="$ac_config_commands test/Makefile"
@ -34007,6 +34027,7 @@ do
"Makefile.common") CONFIG_COMMANDS="$CONFIG_COMMANDS Makefile.common" ;;
"examples/Makefile") CONFIG_COMMANDS="$CONFIG_COMMANDS examples/Makefile" ;;
"lib/Makefile") CONFIG_COMMANDS="$CONFIG_COMMANDS lib/Makefile" ;;
"runtime/Makefile") CONFIG_COMMANDS="$CONFIG_COMMANDS runtime/Makefile" ;;
"test/Makefile") CONFIG_COMMANDS="$CONFIG_COMMANDS test/Makefile" ;;
"test/Makefile.tests") CONFIG_COMMANDS="$CONFIG_COMMANDS test/Makefile.tests" ;;
"tools/Makefile") CONFIG_COMMANDS="$CONFIG_COMMANDS tools/Makefile" ;;
@ -34148,6 +34169,7 @@ BUILD_EXEEXT!$BUILD_EXEEXT$ac_delim
CVSBUILD!$CVSBUILD$ac_delim
ENABLE_OPTIMIZED!$ENABLE_OPTIMIZED$ac_delim
DISABLE_ASSERTIONS!$DISABLE_ASSERTIONS$ac_delim
DEBUG_RUNTIME!$DEBUG_RUNTIME$ac_delim
JIT!$JIT$ac_delim
TARGET_HAS_JIT!$TARGET_HAS_JIT$ac_delim
ENABLE_DOXYGEN!$ENABLE_DOXYGEN$ac_delim
@ -34170,7 +34192,6 @@ ifGNUmake!$ifGNUmake$ac_delim
LN_S!$LN_S$ac_delim
CMP!$CMP$ac_delim
CP!$CP$ac_delim
DATE!$DATE$ac_delim
_ACEOF
if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 97; then
@ -34212,6 +34233,7 @@ _ACEOF
ac_delim='%!_!# '
for ac_last_try in false false false false false :; do
cat >conf$$subs.sed <<_ACEOF
DATE!$DATE$ac_delim
FIND!$FIND$ac_delim
MKDIR!$MKDIR$ac_delim
MV!$MV$ac_delim
@ -34277,7 +34299,7 @@ LIBOBJS!$LIBOBJS$ac_delim
LTLIBOBJS!$LTLIBOBJS$ac_delim
_ACEOF
if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 63; then
if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 64; then
break
elif $ac_last_try; then
{ { echo "$as_me:$LINENO: error: could not make $CONFIG_STATUS" >&5
@ -34688,6 +34710,8 @@ echo "$as_me: executing $ac_file commands" >&6;}
${SHELL} ${llvm_src}/autoconf/install-sh -c ${srcdir}/examples/Makefile examples/Makefile ;;
"lib/Makefile":C) ${llvm_src}/autoconf/mkinstalldirs `dirname lib/Makefile`
${SHELL} ${llvm_src}/autoconf/install-sh -c ${srcdir}/lib/Makefile lib/Makefile ;;
"runtime/Makefile":C) ${llvm_src}/autoconf/mkinstalldirs `dirname runtime/Makefile`
${SHELL} ${llvm_src}/autoconf/install-sh -c ${srcdir}/runtime/Makefile runtime/Makefile ;;
"test/Makefile":C) ${llvm_src}/autoconf/mkinstalldirs `dirname test/Makefile`
${SHELL} ${llvm_src}/autoconf/install-sh -c ${srcdir}/test/Makefile test/Makefile ;;
"test/Makefile.tests":C) ${llvm_src}/autoconf/mkinstalldirs `dirname test/Makefile.tests`
@ -34909,8 +34933,12 @@ fi
if test "$llvm_cv_llvmgcc_sanity" = "no" ; then
{ echo "$as_me:$LINENO: WARNING: ***** llvm-gcc/llvm-g++ was not found, or does not appear to be " >&5
echo "$as_me: WARNING: ***** llvm-gcc/llvm-g++ was not found, or does not appear to be " >&2;}
{ echo "$as_me:$LINENO: WARNING: ***** working. Please make sure you have llvm-gcc and llvm-g++ " >&5
echo "$as_me: WARNING: ***** working. Please make sure you have llvm-gcc and llvm-g++ " >&2;}
{ echo "$as_me:$LINENO: WARNING: ***** in your path before configuring LLVM." >&5
echo "$as_me: WARNING: ***** in your path before configuring LLVM." >&2;}
{ echo "$as_me:$LINENO: WARNING: ***** working. Please make sure you have llvm-gcc and llvm-g++ in" >&5
echo "$as_me: WARNING: ***** working. Please make sure you have llvm-gcc and llvm-g++ in" >&2;}
{ echo "$as_me:$LINENO: WARNING: ***** your path before configuring LLVM. The runtime libraries" >&5
echo "$as_me: WARNING: ***** your path before configuring LLVM. The runtime libraries" >&2;}
{ echo "$as_me:$LINENO: WARNING: ***** (llvm/runtime) will not be built but you should be able to" >&5
echo "$as_me: WARNING: ***** (llvm/runtime) will not be built but you should be able to" >&2;}
{ echo "$as_me:$LINENO: WARNING: ***** build the llvm tools." >&5
echo "$as_me: WARNING: ***** build the llvm tools." >&2;}
fi

48
runtime/GC/GCInterface.h Normal file
View File

@ -0,0 +1,48 @@
/*===-- GCInterface.h - Public interface exposed by garbage collectors ----===*\
|*
|* The LLVM Compiler Infrastructure
|*
|* This file was developed by the LLVM research group and is distributed under
|* the University of Illinois Open Source License. See LICENSE.TXT for details.
|*
|*===----------------------------------------------------------------------===*|
|*
|* This file defines the common public interface that must be exposed by all
|* LLVM garbage collectors.
|*
\*===----------------------------------------------------------------------===*/
#ifndef GCINTERFACE_H
#define GCINTERFACE_H
/* llvm_cg_walk_gcroots - This function is exposed by the LLVM code generator,
* and allows us to traverse the roots on the stack.
*/
void llvm_cg_walk_gcroots(void (*FP)(void **Root, void *Meta));
/* llvm_gc_initialize - This function is called to initalize the garbage
* collector.
*/
void llvm_gc_initialize(unsigned InitialHeapSize);
/* llvm_gc_allocate - This function allocates Size bytes from the heap and
* returns a pointer to it.
*/
void *llvm_gc_allocate(unsigned Size);
/* llvm_gc_collect - This function forces a garbage collection cycle.
*/
void llvm_gc_collect();
/* llvm_gc_read - This function should be implemented to include any read
* barrier code that is needed by the garbage collector.
*/
void *llvm_gc_read(void *ObjPtr, void **FieldPtr);
/* llvm_gc_write - This function should be implemented to include any write
* barrier code that is needed by the garbage collector.
*/
void llvm_gc_write(void *V, void *ObjPtr, void **FieldPtr);
#endif

19
runtime/GC/Makefile Normal file
View File

@ -0,0 +1,19 @@
##===- runtime/GC/Makefile ---------------------------------*- Makefile -*-===##
#
# The LLVM Compiler Infrastructure
#
# This file was developed by the LLVM research group and is distributed under
# the University of Illinois Open Source License. See LICENSE.TXT for details.
#
##===----------------------------------------------------------------------===##
LEVEL = ../..
PARALLEL_DIRS := SemiSpace
EXTRA_DIST := gc_exported_symbols.lst
include $(LEVEL)/Makefile.common
# Install target for libraries: Copy into $LLVMGCCDIR/bytecode-libs
#
install::
clean::

19
runtime/GC/SemiSpace/Makefile Normal file
View File

@ -0,0 +1,19 @@
##===- runtime/GC/SemiSpace/Makefile -----------------------*- Makefile -*-===##
#
# The LLVM Compiler Infrastructure
#
# This file was developed by the LLVM research group and is distributed under
# the University of Illinois Open Source License. See LICENSE.TXT for details.
#
##===----------------------------------------------------------------------===##
LEVEL = ../../..
BYTECODE_LIBRARY = 1
LIBRARYNAME = gcsemispace
BYTECODE_DESTINATION = $(CFERuntimeLibDir)
EXPORTED_SYMBOL_FILE = $(PROJ_SRC_DIR)/../gc_exported_symbols.lst
include $(LEVEL)/Makefile.common
CompileCommonOpts := $(filter-out -pedantic,$(CompileCommonOpts))
CompileCommonOpts := $(filter-out -Wno-long-long,$(CompileCommonOpts))

122
runtime/GC/SemiSpace/semispace.c Normal file
View File

@ -0,0 +1,122 @@
/*===-- semispace.c - Simple semi-space copying garbage collector ---------===*\
|*
|* The LLVM Compiler Infrastructure
|*
|* This file was developed by the LLVM research group and is distributed under
|* the University of Illinois Open Source License. See LICENSE.TXT for details.
|*
|*===----------------------------------------------------------------------===*|
|*
|* This garbage collector is an extremely simple copying collector. It splits
|* the managed region of memory into two pieces: the current space to allocate
|* from, and the copying space. When the portion being allocated from fills up,
|* a garbage collection cycle happens, which copies all live blocks to the other
|* half of the managed space.
|*
\*===----------------------------------------------------------------------===*/
#include "../GCInterface.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/* AllocPtr - This points to the next byte that is available for allocation.
*/
static char *AllocPtr;
/* AllocEnd - This points to the first byte not available for allocation. When
* AllocPtr passes this, we have run out of space.
*/
static char *AllocEnd;
/* CurSpace/OtherSpace - These pointers point to the two regions of memory that
* we switch between. The unallocated portion of the CurSpace is known to be
* zero'd out, but the OtherSpace contains junk.
*/
static void *CurSpace, *OtherSpace;
/* SpaceSize - The size of each space. */
static unsigned SpaceSize;
/* llvm_gc_initialize - Allocate the two spaces that we plan to switch between.
*/
void llvm_gc_initialize(unsigned InitialHeapSize) {
SpaceSize = InitialHeapSize/2;
CurSpace = AllocPtr = calloc(1, SpaceSize);
OtherSpace = malloc(SpaceSize);
AllocEnd = AllocPtr + SpaceSize;
}
/* We always want to inline the fast path, but never want to inline the slow
* path.
*/
void *llvm_gc_allocate(unsigned Size) __attribute__((always_inline));
static void* llvm_gc_alloc_slow(unsigned Size) __attribute__((noinline));
void *llvm_gc_allocate(unsigned Size) {
char *OldAP = AllocPtr;
char *NewEnd = OldAP+Size;
if (NewEnd > AllocEnd)
return llvm_gc_alloc_slow(Size);
AllocPtr = NewEnd;
return OldAP;
}
static void* llvm_gc_alloc_slow(unsigned Size) {
llvm_gc_collect();
if (AllocPtr+Size > AllocEnd) {
fprintf(stderr, "Garbage collector ran out of memory "
"allocating object of size: %d\n", Size);
exit(1);
}
return llvm_gc_allocate(Size);
}
static void process_pointer(void **Root, void *Meta) {
printf("process_root[0x%p] = 0x%p\n", (void*) Root, (void*) *Root);
}
void llvm_gc_collect() {
// Clear out the space we will be copying into.
// FIXME: This should do the copy, then clear out whatever space is left.
memset(OtherSpace, 0, SpaceSize);
printf("Garbage collecting!!\n");
llvm_cg_walk_gcroots(process_pointer);
abort();
}
/* We use no read/write barriers */
void *llvm_gc_read(void *ObjPtr, void **FieldPtr) { return *FieldPtr; }
void llvm_gc_write(void *V, void *ObjPtr, void **FieldPtr) { *FieldPtr = V; }
/*===----------------------------------------------------------------------===**
* FIXME: This should be in a code-generator specific library, but for now this
* will work for all code generators.
*/
typedef struct GCRoot {
void **RootPtr;
void *Meta;
} GCRoot;
typedef struct GCRoots {
struct GCRoots *Next;
unsigned NumRoots;
GCRoot RootRecords[];
} GCRoots;
GCRoots *llvm_gc_root_chain;
void llvm_cg_walk_gcroots(void (*FP)(void **Root, void *Meta)) {
GCRoots *R = llvm_gc_root_chain;
for (; R; R = R->Next) {
unsigned i, e;
for (i = 0, e = R->NumRoots; i != e; ++i)
FP(R->RootRecords[i].RootPtr, R->RootRecords[i].Meta);
}
}
/* END FIXME! */

7
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llvm_gc_initialize
llvm_gc_allocate
llvm_gc_collect
llvm_gc_write
llvm_gc_read
llvm_gc_root_chain

12
runtime/GCCLibraries/Makefile Normal file
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##===- runtime/GCCLibraries/Makefile -----------------------*- Makefile -*-===##
#
# The LLVM Compiler Infrastructure
#
# This file was developed by the LLVM research group and is distributed under
# the University of Illinois Open Source License. See LICENSE.TXT for details.
#
##===----------------------------------------------------------------------===##
LEVEL := ../..
PARALLEL_DIRS := crtend libc libgcc libm
include $(LEVEL)/Makefile.common

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This directory contains libraries which are used when building the GCC
front-end. For the most part, these are just stub libraries, but some
of them contain actual code.
In particular, the crtend library contains the runtime code to handle
static constructors and destructors for C and C++ programs.

54
runtime/GCCLibraries/crtend/Exception.cpp Normal file
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//===- Exception.cpp - Generic language-independent exceptions ------------===//
//
// This file defines the the shared data structures used by all language
// specific exception handling runtime libraries.
//
//===----------------------------------------------------------------------===//
#include "Exception.h"
// Thread local state for exception handling. FIXME: This should really be made
// thread-local!
// UncaughtExceptionStack - The stack of exceptions currently being thrown.
static llvm_exception *UncaughtExceptionStack = 0;
// __llvm_eh_has_uncaught_exception - This is used to implement
// std::uncaught_exception.
//
bool __llvm_eh_has_uncaught_exception() throw() {
return UncaughtExceptionStack != 0;
}
// __llvm_eh_current_uncaught_exception - This function checks to see if the
// current uncaught exception is of the specified language type. If so, it
// returns a pointer to the exception area data.
//
void *__llvm_eh_current_uncaught_exception_type(unsigned HandlerType) throw() {
if (UncaughtExceptionStack->ExceptionType == HandlerType)
return UncaughtExceptionStack+1;
return 0;
}
// __llvm_eh_add_uncaught_exception - This adds the specified exception to the
// top of the uncaught exception stack. The exception should not already be on
// the stack!
void __llvm_eh_add_uncaught_exception(llvm_exception *E) throw() {
E->Next = UncaughtExceptionStack;
UncaughtExceptionStack = E;
}
// __llvm_eh_get_uncaught_exception - Returns the current uncaught exception.
// There must be an uncaught exception for this to work!
llvm_exception *__llvm_eh_get_uncaught_exception() throw() {
return UncaughtExceptionStack;
}
// __llvm_eh_pop_from_uncaught_stack - Remove the current uncaught exception
// from the top of the stack.
llvm_exception *__llvm_eh_pop_from_uncaught_stack() throw() {
llvm_exception *E = __llvm_eh_get_uncaught_exception();
UncaughtExceptionStack = E->Next;
return E;
}

71
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//===- Exception.h - Generic language-independent exceptions ----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the the shared data structures used by all language
// specific exception handling runtime libraries.
//
// NOTE NOTE NOTE: A copy of this file lives in llvmgcc/libstdc++-v3/libsupc++/
// Any modifications to this file must keep it in sync!
//
//===----------------------------------------------------------------------===//
#ifndef EXCEPTION_H
#define EXCEPTION_H
struct llvm_exception {
// ExceptionDestructor - This call-back function is used to destroy the
// current exception, without requiring the caller to know what the concrete
// exception type is.
//
void (*ExceptionDestructor)(llvm_exception *);
// ExceptionType - This field identifies what runtime library this exception
// came from. Currently defined values are:
// 0 - Error
// 1 - longjmp exception (see longjmp-exception.c)
// 2 - C++ exception (see c++-exception.c)
//
unsigned ExceptionType;
// Next - This points to the next exception in the current stack.
llvm_exception *Next;
// HandlerCount - This is a count of the number of handlers which have
// currently caught this exception. If the handler is caught and this number
// falls to zero, the exception is destroyed.
//
unsigned HandlerCount;
// isRethrown - This field is set on an exception if it has been 'throw;'n.
// This is needed because the exception might exit through a number of the
// end_catch statements matching the number of begin_catch statements that
// have been processed. When this happens, the exception should become
// uncaught, not dead.
//
int isRethrown;
};
enum {
ErrorException = 0,
SJLJException = 1,
CXXException = 2
};
// Language independent exception handling API...
//
extern "C" {
bool __llvm_eh_has_uncaught_exception() throw();
void *__llvm_eh_current_uncaught_exception_type(unsigned HandlerType) throw();
void __llvm_eh_add_uncaught_exception(llvm_exception *E) throw();
llvm_exception *__llvm_eh_get_uncaught_exception() throw();
llvm_exception *__llvm_eh_pop_from_uncaught_stack() throw();
}
#endif

83
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##===- runtime/GCCLibraries/crtend/Makefile ----------------*- Makefile -*-===##
#
# The LLVM Compiler Infrastructure
#
# This file was developed by the LLVM research group and is distributed under
# the University of Illinois Open Source License. See LICENSE.TXT for details.
#
##===----------------------------------------------------------------------===##
#
# This directory contains the C and C++ runtime libraries for the LLVM GCC
# front-ends. See the README.txt file for more details.
#
# Since this archive has strange requirements, we use some custom rules for
# building it.
#
##===----------------------------------------------------------------------===##
LEVEL = ../../..
DONT_BUILD_RELINKED = 1
LIBRARYNAME = crtend
BYTECODE_DESTINATION = $(CFERuntimeLibDir)
MainSrc := crtend.c
GenericEHSrc := Exception.cpp
SJLJEHSrc := SJLJ-Exception.cpp
EXTRA_DIST := $(MainSrc) $(GenericEHSrc) $(SJLJEHSrc) \
comp_main.lst comp_genericeh.lst comp_sjljeh.lst
include $(LEVEL)/Makefile.common
MainObj := $(ObjDir)/crtend.bc
GenericEHObj := $(ObjDir)/Exception.bc
SJLJEHObj := $(ObjDir)/SJLJ-Exception.bc
# __main and ctor/dtor support component
$(ObjDir)/comp_main.bc: $(MainObj)
$(Echo) Linking $(notdir $@) component...
$(Verb) $(GCCLD) -link-as-library \
-internalize-public-api-file=$(PROJ_SRC_DIR)/comp_main.lst \
$(MainObj) -o $@
# Generic exception handling support runtime.
$(ObjDir)/comp_genericeh.bc: $(GenericEHObj)
$(Echo) Linking $(notdir $@) component...
$(Verb) $(GCCLD) -link-as-library \
-internalize-public-api-file=$(PROJ_SRC_DIR)/comp_genericeh.lst \
$(GenericEHObj) -o $@
# setjmp/longjmp exception handling support runtime.
$(ObjDir)/comp_sjljeh.bc: $(SJLJEHObj)
$(Echo) Linking $(notdir $@) component...
$(Verb) $(GCCLD) -link-as-library \
-internalize-public-api-file=$(PROJ_SRC_DIR)/comp_sjljeh.lst \
$(SJLJEHObj) -o $@
SYMBOLHACKEDOBJS := $(ObjDir)/comp_main.bc $(ObjDir)/comp_genericeh.bc \
$(ObjDir)/comp_sjljeh.bc
all-local:: $(LibName.BCA)
ifdef BYTECODE_DESTINATION
BytecodeDestDir := $(BYTECODE_DESTINATION)
else
BytecodeDestDir := $(PROJ_libdir)
endif
DestBytecodeLib = $(BytecodeDestDir)/lib$(LIBRARYNAME).a
install-bytecode-local:: $(DestBytecodeLib)
install-local:: $(DestBytecodeLib)
$(LibName.BCA): $(SYMBOLHACKEDOBJS) $(LibDir)/.dir $(LLVMToolDir)/llvm-ar
$(Echo) Building $(BuildMode) Bytecode Archive $(notdir $@)
$(Verb) $(RM) -f $@
$(Verb) $(LArchive) $@ $(SYMBOLHACKEDOBJS)
$(DestBytecodeLib): $(BytecodeDestDir) $(LibName.BCA)
$(Echo) Installing $(BuildMode) Bytecode Archive $(DestBytecodeLib)
$(Verb) $(DataInstall) $(LibName.BCA) $(DestBytecodeLib)
uninstall-local::
$(Echo) Uninstalling $(BuildMode) Bytecode Archive $(DestBytecodeLib)
-$(Verb) $(RM) -f $(DestBytecodeLib)

15
runtime/GCCLibraries/crtend/README.txt Normal file
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This directory contains the C and C++ runtime libraries for the LLVM GCC
front-ends. It is composed of four distinct pieces:
1. __main: now dead, but provided for compatibility.
2. Generic EH support routines. This is used by C/C++ programs that use
setjmp/longjmp, and by C++ programs that make use of exceptions.
3. setjmp/longjmp EH support. This is used by C/C++ programs that call SJLJ.
4. C++ exception handling runtime support.
These four components are compiled together into an archive file, so that
applications using a subset of the four do not pull in unnecessary code and
dependencies.

146
runtime/GCCLibraries/crtend/SJLJ-Exception.cpp Normal file
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//===- SJLJ-Exception.cpp - SetJmp/LongJmp Exception Handling -------------===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the API used by the Setjmp/Longjmp exception handling
// runtime library.
//
//===----------------------------------------------------------------------===//
#include "SJLJ-Exception.h"
#include <cstdlib>
#include <cassert>
// Assert should only be used for debugging the runtime library. Enabling it in
// CVS will break some platforms!
#undef assert
#define assert(X)
// get_sjlj_exception - Adjust the llvm_exception pointer to be an appropriate
// llvm_sjlj_exception pointer.
inline llvm_sjlj_exception *get_sjlj_exception(llvm_exception *E) {
assert(E->ExceptionType == SJLJException);
return (llvm_sjlj_exception*)(E+1) - 1;
}
// SetJmpMapEntry - One entry in a linked list of setjmps for the current
// function.
struct SetJmpMapEntry {
void *JmpBuf;
unsigned SetJmpID;
SetJmpMapEntry *Next;
};
// SJLJDestructor - This function is used to free the exception when
// language-indent code needs to destroy the exception without knowing exactly
// what type it is.
static void SJLJDestructor(llvm_exception *E) {
free(get_sjlj_exception(E));
}
// __llvm_sjljeh_throw_longjmp - This function creates the longjmp exception and
// returns. It takes care of mapping the longjmp value from 0 -> 1 as
// appropriate. The caller should immediately call llvm.unwind after this
// function call.
void __llvm_sjljeh_throw_longjmp(void *JmpBuffer, int Val) throw() {
llvm_sjlj_exception *E =
(llvm_sjlj_exception *)malloc(sizeof(llvm_sjlj_exception));
E->BaseException.ExceptionDestructor = SJLJDestructor;
E->BaseException.ExceptionType = SJLJException;
E->BaseException.HandlerCount = 0;
E->BaseException.isRethrown = 0;
E->JmpBuffer = JmpBuffer;
E->LongJmpValue = Val ? Val : 1;
__llvm_eh_add_uncaught_exception(&E->BaseException);
}
// __llvm_sjljeh_init_setjmpmap - This funciton initializes the pointer provided
// to an empty setjmp map, and should be called on entry to a function which
// calls setjmp.
void __llvm_sjljeh_init_setjmpmap(void **SetJmpMap) throw() {
*SetJmpMap = 0;
}
// __llvm_sjljeh_destroy_setjmpmap - This function frees all memory associated
// with the specified setjmpmap structure. It should be called on all exits
// (returns or unwinds) from the function which calls ...init_setjmpmap.
void __llvm_sjljeh_destroy_setjmpmap(void **SetJmpMap) throw() {
SetJmpMapEntry *Next;
for (SetJmpMapEntry *SJE = *(SetJmpMapEntry**)SetJmpMap; SJE; SJE = Next) {
Next = SJE->Next;
free(SJE);
}
}
// __llvm_sjljeh_add_setjmp_to_map - This function adds or updates an entry to
// the map, to indicate which setjmp should be returned to if a longjmp happens.
void __llvm_sjljeh_add_setjmp_to_map(void **SetJmpMap, void *JmpBuf,
unsigned SetJmpID) throw() {
SetJmpMapEntry **SJE = (SetJmpMapEntry**)SetJmpMap;
// Scan for a pre-existing entry...
for (; *SJE; SJE = &(*SJE)->Next)
if ((*SJE)->JmpBuf == JmpBuf) {
(*SJE)->SetJmpID = SetJmpID;
return;
}
// No prexisting entry found, append to the end of the list...
SetJmpMapEntry *New = (SetJmpMapEntry *)malloc(sizeof(SetJmpMapEntry));
*SJE = New;
New->JmpBuf = JmpBuf;
New->SetJmpID = SetJmpID;
New->Next = 0;
}
// __llvm_sjljeh_is_longjmp_exception - This function returns true if the
// current uncaught exception is a longjmp exception. This is the first step of
// catching a sjlj exception.
bool __llvm_sjljeh_is_longjmp_exception() throw() {
return __llvm_eh_current_uncaught_exception_type(SJLJException) != 0;
}
// __llvm_sjljeh_get_longjmp_value - This function returns the value that the
// setjmp call should "return". This requires that the current uncaught
// exception be a sjlj exception, though it does not require the exception to be
// caught by this function.
int __llvm_sjljeh_get_longjmp_value() throw() {
llvm_sjlj_exception *E =
get_sjlj_exception(__llvm_eh_get_uncaught_exception());
return E->LongJmpValue;
}
// __llvm_sjljeh_try_catching_longjmp_exception - This function checks to see if
// the current uncaught longjmp exception matches any of the setjmps collected
// in the setjmpmap structure. If so, it catches and destroys the exception,
// returning the index of the setjmp which caught the exception. If not, it
// leaves the exception uncaught and returns a value of ~0.
unsigned __llvm_sjljeh_try_catching_longjmp_exception(void **SetJmpMap) throw(){
llvm_sjlj_exception *E =
get_sjlj_exception(__llvm_eh_get_uncaught_exception());
// Scan for a matching entry in the SetJmpMap...
SetJmpMapEntry *SJE = *(SetJmpMapEntry**)SetJmpMap;
for (; SJE; SJE = SJE->Next)
if (SJE->JmpBuf == E->JmpBuffer) {
// "Catch" and destroy the exception...
__llvm_eh_pop_from_uncaught_stack();
// We know it's a longjmp exception, so we can just free it instead of
// calling the destructor.
free(E);
// Return the setjmp ID which we should branch to...
return SJE->SetJmpID;
}
// No setjmp in this function catches the exception!
return ~0;
}

80
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//===- SJLJ-Exception.h - SetJmp/LongJmp Exception Handling -----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the data structures and API used by the Setjmp/Longjmp
// exception handling runtime library.
//
//===----------------------------------------------------------------------===//
#ifndef SJLJ_EXCEPTION_H
#define SJLJ_EXCEPTION_H
#include "Exception.h"
struct llvm_sjlj_exception {
// JmpBuffer - This is the buffer which was longjmp'd with.
//
void *JmpBuffer;
// LongJmpValue - The value passed into longjmp, which the corresponding
// setjmp should return. Note that this value will never be equal to 0.
//
int LongJmpValue;
// BaseException - The language independent portion of the exception state.
// This is at the end of the record so that we can add additional members to
// this structure without breaking binary compatibility.
//
llvm_exception BaseException;
};
extern "C" {
// __llvm_sjljeh_throw_longjmp - This function creates the longjmp exception
// and returns. It takes care of mapping the longjmp value from 0 -> 1 as
// appropriate. The caller should immediately call llvm.unwind after this
// function call.
void __llvm_sjljeh_throw_longjmp(void *JmpBuffer, int Val) throw();
// __llvm_sjljeh_init_setjmpmap - This funciton initializes the pointer
// provided to an empty setjmp map, and should be called on entry to a
// function which calls setjmp.
void __llvm_sjljeh_init_setjmpmap(void **SetJmpMap) throw();
// __llvm_sjljeh_destroy_setjmpmap - This function frees all memory associated
// with the specified setjmpmap structure. It should be called on all exits
// (returns or unwinds) from the function which calls ...init_setjmpmap.
void __llvm_sjljeh_destroy_setjmpmap(void **SetJmpMap) throw();
// __llvm_sjljeh_add_setjmp_to_map - This function adds or updates an entry to
// the map, to indicate which setjmp should be returned to if a longjmp
// happens.
void __llvm_sjljeh_add_setjmp_to_map(void **SetJmpMap, void *JmpBuf,
unsigned SetJmpID) throw();
// __llvm_sjljeh_is_longjmp_exception - This function returns true if the
// current uncaught exception is a longjmp exception. This is the first step
// of catching a sjlj exception.
bool __llvm_sjljeh_is_longjmp_exception() throw();
// __llvm_sjljeh_get_longjmp_value - This function returns the value that the
// setjmp call should "return". This requires that the current uncaught
// exception be a sjlj exception, though it does not require the exception to
// be caught by this function.
int __llvm_sjljeh_get_longjmp_value() throw();
// __llvm_sjljeh_try_catching_longjmp_exception - This function checks to see
// if the current uncaught longjmp exception matches any of the setjmps
// collected in the setjmpmap structure. If so, it catches and destroys the
// exception, returning the index of the setjmp which caught the exception.
// If not, it leaves the exception uncaught and returns a value of ~0.
unsigned __llvm_sjljeh_try_catching_longjmp_exception(void **SetJmpMap)
throw();
}
#endif

9
runtime/GCCLibraries/crtend/comp_genericeh.lst Normal file
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__main
llvm.global_ctors
llvm.global_dtors
__llvm_eh_has_uncaught_exception
__llvm_eh_current_uncaught_exception_type
__llvm_eh_add_uncaught_exception
__llvm_eh_get_uncaught_exception
__llvm_eh_pop_from_uncaught_stack

3
runtime/GCCLibraries/crtend/comp_main.lst Normal file
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__main
llvm.global_ctors
llvm.global_dtors

7
runtime/GCCLibraries/crtend/comp_sjljeh.lst Normal file
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__llvm_sjljeh_throw_longjmp
__llvm_sjljeh_init_setjmpmap
__llvm_sjljeh_destroy_setjmpmap
__llvm_sjljeh_add_setjmp_to_map
__llvm_sjljeh_is_longjmp_exception
__llvm_sjljeh_get_longjmp_value
__llvm_sjljeh_try_catching_longjmp_exception

16
runtime/GCCLibraries/crtend/crtend.c Normal file
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/*===- crtend.c - Initialization code for programs ------------------------===*\
*
* The LLVM Compiler Infrastructure
*
* This file was developed by the LLVM research group and is distributed under
* the University of Illinois Open Source License. See LICENSE.TXT for details.
*
*===----------------------------------------------------------------------===*
*
* This file defines the __main function, which we preserve for backwards
* compatibility.
*
\*===----------------------------------------------------------------------===*/
void __main(void) {
}

510
runtime/GCCLibraries/libc/COPYING.LIB Normal file
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GNU LESSER GENERAL PUBLIC LICENSE
Version 2.1, February 1999
Copyright (C) 1991, 1999 Free Software Foundation, Inc.
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
[This is the first released version of the Lesser GPL. It also counts
as the successor of the GNU Library Public License, version 2, hence
the version number 2.1.]
Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
Licenses are intended to guarantee your freedom to share and change
free software--to make sure the software is free for all its users.
This license, the Lesser General Public License, applies to some
specially designated software packages--typically libraries--of the
Free Software Foundation and other authors who decide to use it. You
can use it too, but we suggest you first think carefully about whether
this license or the ordinary General Public License is the better
strategy to use in any particular case, based on the explanations
below.
When we speak of free software, we are referring to freedom of use,
not price. Our General Public Licenses are designed to make sure that
you have the freedom to distribute copies of free software (and charge
for this service if you wish); that you receive source code or can get
it if you want it; that you can change the software and use pieces of
it in new free programs; and that you are informed that you can do
these things.
To protect your rights, we need to make restrictions that forbid
distributors to deny you these rights or to ask you to surrender these
rights. These restrictions translate to certain responsibilities for
you if you distribute copies of the library or if you modify it.
For example, if you distribute copies of the library, whether gratis
or for a fee, you must give the recipients all the rights that we gave
you. You must make sure that they, too, receive or can get the source
code. If you link other code with the library, you must provide
complete object files to the recipients, so that they can relink them
with the library after making changes to the library and recompiling
it. And you must show them these terms so they know their rights.
We protect your rights with a two-step method: (1) we copyright the
library, and (2) we offer you this license, which gives you legal
permission to copy, distribute and/or modify the library.
To protect each distributor, we want to make it very clear that
there is no warranty for the free library. Also, if the library is
modified by someone else and passed on, the recipients should know
that what they have is not the original version, so that the original
author's reputation will not be affected by problems that might be
introduced by others.
^L
Finally, software patents pose a constant threat to the existence of
any free program. We wish to make sure that a company cannot
effectively restrict the users of a free program by obtaining a
restrictive license from a patent holder. Therefore, we insist that
any patent license obtained for a version of the library must be
consistent with the full freedom of use specified in this license.
Most GNU software, including some libraries, is covered by the
ordinary GNU General Public License. This license, the GNU Lesser
General Public License, applies to certain designated libraries, and
is quite different from the ordinary General Public License. We use
this license for certain libraries in order to permit linking those
libraries into non-free programs.
When a program is linked with a library, whether statically or using
a shared library, the combination of the two is legally speaking a
combined work, a derivative of the original library. The ordinary
General Public License therefore permits such linking only if the
entire combination fits its criteria of freedom. The Lesser General
Public License permits more lax criteria for linking other code with
the library.
We call this license the "Lesser" General Public License because it
does Less to protect the user's freedom than the ordinary General
Public License. It also provides other free software developers Less
of an advantage over competing non-free programs. These disadvantages
are the reason we use the ordinary General Public License for many
libraries. However, the Lesser license provides advantages in certain
special circumstances.
For example, on rare occasions, there may be a special need to
encourage the widest possible use of a certain library, so that it
becomes a de-facto standard. To achieve this, non-free programs must
be allowed to use the library. A more frequent case is that a free
library does the same job as widely used non-free libraries. In this
case, there is little to gain by limiting the free library to free
software only, so we use the Lesser General Public License.
In other cases, permission to use a particular library in non-free
programs enables a greater number of people to use a large body of
free software. For example, permission to use the GNU C Library in
non-free programs enables many more people to use the whole GNU
operating system, as well as its variant, the GNU/Linux operating
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That's all there is to it!

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runtime/GCCLibraries/libc/LICENSE.TXT Normal file
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libc
------------------------------------------------------------------------------
The stripped down C library found in llvm/runtime/GCCLibraries/libc is licensed
to you under the GNU Lesser General Public License (LGPL). The license, along
with copyright information, is in COPYING.LIB.
Portions of glibc also contain copyrights and licenses from third parties.
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but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.

219
runtime/GCCLibraries/libc/LICENSES Normal file
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This file contains the copying permission notices for various files in the
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If these license terms cause you a real problem, contact the author. */

19
runtime/GCCLibraries/libc/Makefile Normal file
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##===- runtime/GCCLibraries/libc/Makefile ------------------*- Makefile -*-===##
#
# The LLVM Compiler Infrastructure
#
# This file was developed by the LLVM research group and is distributed under
# the University of Illinois Open Source License. See LICENSE.TXT for details.
#
##===----------------------------------------------------------------------===##
LEVEL = ../../..
BYTECODE_LIBRARY = 1
DONT_BUILD_RELINKED = 1
LIBRARYNAME = c
BYTECODE_DESTINATION = $(CFERuntimeLibDir)
include $(LEVEL)/Makefile.common
CompileCommonOpts := $(filter-out -pedantic,$(CompileCommonOpts))
CompileCommonOpts := $(filter-out -Wno-long-long,$(CompileCommonOpts))

4
runtime/GCCLibraries/libc/README.txt Normal file
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This directory contains source files to build the LLVM version of libc.
Currently it is hacked together on a by-demand basis, but someday a proper
port of libc would be very nice.

118
runtime/GCCLibraries/libc/atox.c Normal file
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//===-- atox.c - Ascii string parsers for LLVM libc Library -------*- C -*-===//
//
// A lot of this code is ripped gratuitously from glibc and libiberty.
//
//===----------------------------------------------------------------------===//
#define isspace(x) ((x) == ' ' || (x) == '\t' || (x) == '\n')
#define isdigit(x) ((x) >= '0' && (x) <= '9')
#define isupper(x) ((x) >= 'A' && (x) <= 'Z')
#define islower(x) ((x) >= 'a' && (x) <= 'z')
#define isalpha(x) (isupper(x) || islower(x))
#ifndef ULONG_MAX
#define ULONG_MAX ((unsigned long)(~0L)) /* 0xFFFFFFFF */
#endif
#ifndef LONG_MAX
#define LONG_MAX ((long)(ULONG_MAX >> 1)) /* 0x7FFFFFFF */
#endif
#ifndef LONG_MIN
#define LONG_MIN ((long)(~LONG_MAX)) /* 0x80000000 */
#endif
#if 0
/*
* Convert a string to a long integer.
*
* Ignores `locale' stuff. Assumes that the upper and lower case
* alphabets and digits are each contiguous.
*/
long strtol(const char *nptr, char **endptr, int base) {
register const char *s = nptr;
register unsigned long acc;
register int c;
register unsigned long cutoff;
register int neg = 0, any, cutlim;
/*
* Skip white space and pick up leading +/- sign if any.
* If base is 0, allow 0x for hex and 0 for octal, else
* assume decimal; if base is already 16, allow 0x.
*/
do {
c = *s++;
} while (isspace(c));
if (c == '-') {
neg = 1;
c = *s++;
} else if (c == '+')
c = *s++;
if ((base == 0 || base == 16) &&
c == '0' && (*s == 'x' || *s == 'X')) {
c = s[1];
s += 2;
base = 16;
}
if (base == 0)
base = c == '0' ? 8 : 10;
/*
* Compute the cutoff value between legal numbers and illegal
* numbers. That is the largest legal value, divided by the
* base. An input number that is greater than this value, if
* followed by a legal input character, is too big. One that
* is equal to this value may be valid or not; the limit
* between valid and invalid numbers is then based on the last
* digit. For instance, if the range for longs is
* [-2147483648..2147483647] and the input base is 10,
* cutoff will be set to 214748364 and cutlim to either
* 7 (neg==0) or 8 (neg==1), meaning that if we have accumulated
* a value > 214748364, or equal but the next digit is > 7 (or 8),
* the number is too big, and we will return a range error.
*
* Set any if any `digits' consumed; make it negative to indicate
* overflow.
*/
cutoff = neg ? -(unsigned long)LONG_MIN : LONG_MAX;
cutlim = cutoff % (unsigned long)base;
cutoff /= (unsigned long)base;
for (acc = 0, any = 0;; c = *s++) {
if (isdigit(c))
c -= '0';
else if (isalpha(c))
c -= isupper(c) ? 'A' - 10 : 'a' - 10;
else
break;
if (c >= base)
break;
if (any < 0 || acc > cutoff || acc == cutoff && c > cutlim)
any = -1;
else {
any = 1;
acc *= base;
acc += c;
}
}
if (any < 0) {
acc = neg ? LONG_MIN : LONG_MAX;
} else if (neg)
acc = -acc;
if (endptr != 0)
*endptr = (char *) (any ? s - 1 : nptr);
return (acc);
}
/* Convert a string to an int. */
int atoi(const char *nptr) {
return (int)strtol(nptr, 0, 10);
}
/* Convert a string to a long int. */
long int atol(const char *nptr) {
return strtol(nptr, 0, 10);
}
#endif

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//===-- io.c - IO routines for LLVM libc Library ------------------*- C -*-===//
//
// A lot of this code is ripped gratuitously from glibc and libiberty.
//
//===----------------------------------------------------------------------===//
int putchar(int);
// The puts() function writes the string pointed to by s, followed by a
// NEWLINE character, to the standard output stream stdout. On success the
// number of characters written is returned; otherwise they return EOF.
//
int puts(const char *S) {
const char *Str = S;
while (*Str) putchar(*Str++);
putchar('\n');
return Str+1-S;
}

261
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//===-- qsort.c - The qsort function for the LLVM libc Library ----*- C -*-===//
//
// This code is a modified form of the qsort() function from the GNU C
// library.
//
// Modifications:
// 2003/05/29 - Code disabled for compilation. Line wrapping changed.
//
//===----------------------------------------------------------------------===//
/* Copyright (C) 1991, 1992, 1996, 1997, 1999 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Written by Douglas C. Schmidt (schmidt@ics.uci.edu).
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
/* If you consider tuning this algorithm, you should consult first:
Engineering a sort function; Jon Bentley and M. Douglas McIlroy;
Software - Practice and Experience; Vol. 23 (11), 1249-1265, 1993. */
#if 0
#include <limits.h>
#include <stdlib.h>
#include <string.h>
/* Byte-wise swap two items of size SIZE. */
#define SWAP(a, b, size) \
do \
{ \
register size_t __size = (size); \
register char *__a = (a), *__b = (b); \
do \
{ \
char __tmp = *__a; \
*__a++ = *__b; \
*__b++ = __tmp; \
} while (--__size > 0); \
} while (0)
/* Discontinue quicksort algorithm when partition gets below this size.
This particular magic number was chosen to work best on a Sun 4/260. */
#define MAX_THRESH 4
/* Stack node declarations used to store unfulfilled partition obligations. */
typedef struct
{
char *lo;
char *hi;
} stack_node;
/* The next 4 #defines implement a very fast in-line stack abstraction. */
/* The stack needs log (total_elements) entries (we could even subtract
log(MAX_THRESH)). Since total_elements has type size_t, we get as
upper bound for log (total_elements):
bits per byte (CHAR_BIT) * sizeof(size_t). */
#define STACK_SIZE (CHAR_BIT * sizeof(size_t))
#define PUSH(low, high) ((void) ((top->lo = (low)), (top->hi = (high)), ++top))
#define POP(low, high) ((void) (--top, (low = top->lo), (high = top->hi)))
#define STACK_NOT_EMPTY (stack < top)
/* Order size using quicksort. This implementation incorporates
four optimizations discussed in Sedgewick:
1. Non-recursive, using an explicit stack of pointer that store the
next array partition to sort. To save time, this maximum amount
of space required to store an array of SIZE_MAX is allocated on the
stack. Assuming a 32-bit (64 bit) integer for size_t, this needs
only 32 * sizeof(stack_node) == 256 bytes (for 64 bit: 1024 bytes).
Pretty cheap, actually.
2. Chose the pivot element using a median-of-three decision tree.
This reduces the probability of selecting a bad pivot value and
eliminates certain extraneous comparisons.
3. Only quicksorts TOTAL_ELEMS / MAX_THRESH partitions, leaving
insertion sort to order the MAX_THRESH items within each partition.
This is a big win, since insertion sort is faster for small, mostly
sorted array segments.
4. The larger of the two sub-partitions is always pushed onto the
stack first, with the algorithm then concentrating on the
smaller partition. This *guarantees* no more than log (total_elems)
stack size is needed (actually O(1) in this case)! */
typedef int(*__compar_fn_t)(const void *, const void *);
void
qsort (void *const pbase, size_t total_elems, size_t size,
__compar_fn_t cmp)
{
register char *base_ptr = (char *) pbase;
const size_t max_thresh = MAX_THRESH * size;
if (total_elems == 0)
/* Avoid lossage with unsigned arithmetic below. */
return;
if (total_elems > MAX_THRESH)
{
char *lo = base_ptr;
char *hi = &lo[size * (total_elems - 1)];
stack_node stack[STACK_SIZE];
stack_node *top = stack + 1;
while (STACK_NOT_EMPTY)
{
char *left_ptr;
char *right_ptr;
/* Select median value from among LO, MID, and HI. Rearrange
LO and HI so the three values are sorted. This lowers the
probability of picking a pathological pivot value and
skips a comparison for both the LEFT_PTR and RIGHT_PTR in
the while loops. */
char *mid = lo + size * ((hi - lo) / size >> 1);
if ((*cmp) ((void *) mid, (void *) lo) < 0)
SWAP (mid, lo, size);
if ((*cmp) ((void *) hi, (void *) mid) < 0)
SWAP (mid, hi, size);
else
goto jump_over;
if ((*cmp) ((void *) mid, (void *) lo) < 0)
SWAP (mid, lo, size);
jump_over:;
left_ptr = lo + size;
right_ptr = hi - size;
/* Here's the famous ``collapse the walls'' section of quicksort.
Gotta like those tight inner loops! They are the main reason
that this algorithm runs much faster than others. */
do
{
while ((*cmp) ((void *) left_ptr, (void *) mid) < 0)
left_ptr += size;
while ((*cmp) ((void *) mid, (void *) right_ptr) < 0)
right_ptr -= size;
if (left_ptr < right_ptr)
{
SWAP (left_ptr, right_ptr, size);
if (mid == left_ptr)
mid = right_ptr;
else if (mid == right_ptr)
mid = left_ptr;
left_ptr += size;
right_ptr -= size;
}
else if (left_ptr == right_ptr)
{
left_ptr += size;
right_ptr -= size;
break;
}
}
while (left_ptr <= right_ptr);
/* Set up pointers for next iteration. First determine whether
left and right partitions are below the threshold size. If so,
ignore one or both. Otherwise, push the larger partition's
bounds on the stack and continue sorting the smaller one. */
if ((size_t) (right_ptr - lo) <= max_thresh)
{
if ((size_t) (hi - left_ptr) <= max_thresh)
/* Ignore both small partitions. */
POP (lo, hi);
else
/* Ignore small left partition. */
lo = left_ptr;
}
else if ((size_t) (hi - left_ptr) <= max_thresh)
/* Ignore small right partition. */
hi = right_ptr;
else if ((right_ptr - lo) > (hi - left_ptr))
{
/* Push larger left partition indices. */
PUSH (lo, right_ptr);
lo = left_ptr;
}
else
{
/* Push larger right partition indices. */
PUSH (left_ptr, hi);
hi = right_ptr;
}
}
}
/* Once the BASE_PTR array is partially sorted by quicksort the rest
is completely sorted using insertion sort, since this is efficient
for partitions below MAX_THRESH size. BASE_PTR points to the beginning
of the array to sort, and END_PTR points at the very last element in
the array (*not* one beyond it!). */
#define min(x, y) ((x) < (y) ? (x) : (y))
{
char *const end_ptr = &base_ptr[size * (total_elems - 1)];
char *tmp_ptr = base_ptr;
char *thresh = min(end_ptr, base_ptr + max_thresh);
register char *run_ptr;
/* Find smallest element in first threshold and place it at the
array's beginning. This is the smallest array element,
and the operation speeds up insertion sort's inner loop. */
for (run_ptr = tmp_ptr + size; run_ptr <= thresh; run_ptr += size)
if ((*cmp) ((void *) run_ptr, (void *) tmp_ptr) < 0)
tmp_ptr = run_ptr;
if (tmp_ptr != base_ptr)
SWAP (tmp_ptr, base_ptr, size);
/* Insertion sort, running from left-hand-side up to right-hand-side. */
run_ptr = base_ptr + size;
while ((run_ptr += size) <= end_ptr)
{
tmp_ptr = run_ptr - size;
while ((*cmp) ((void *) run_ptr, (void *) tmp_ptr) < 0)
tmp_ptr -= size;
tmp_ptr += size;
if (tmp_ptr != run_ptr)
{
char *trav;
trav = run_ptr + size;
while (--trav >= run_ptr)
{
char c = *trav;
char *hi, *lo;
for (hi = lo = trav; (lo -= size) >= tmp_ptr; hi = lo)
*hi = *lo;
*hi = c;
}
}
}
}
}
#endif

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//===-- remove.c - The remove function for the LLVM libc Library --*- C -*-===//
//
// This code is a modified form of the remove() function from the GNU C
// library.
//
// Modifications:
// 2005/11/28 - Added to LLVM tree. Functions renamed to allow compilation.
// Code to control symbol linkage types removed.
//
//===----------------------------------------------------------------------===//
/* ANSI C `remove' function to delete a file or directory. POSIX.1 version.
Copyright (C) 1995,96,97,2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
int
remove (const char * file)
{
int save;
save = errno;
if (rmdir (file) == 0)
return 0;
else if (errno == ENOTDIR && unlink (file) == 0)
{
errno = (save);
return 0;
}
return -1;
}

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//===-- string.c - String functions for the LLVM libc Library -----*- C -*-===//
//
// A lot of this code is ripped gratuitously from glibc and libiberty.
//
//===----------------------------------------------------------------------===//
#include <stdlib.h>
#include <string.h>
#ifdef strlen
#undef strlen
#endif
size_t strlen(const char *Str) {
size_t Count = 0;
while (*Str) { ++Count; ++Str; }
return Count;
}
#ifdef strdup
#undef strdup
#endif
char *strdup(const char *str) {
size_t Len = strlen(str);
char *Result = (char*)malloc((Len+1)*sizeof(char));
memcpy(Result, str, Len+1);
return Result;
}
#ifdef strndup
#undef strndup
#endif
char *strndup(const char *str, size_t n) {
size_t Len = strlen(str);
if (Len > n) Len = n;
char *Result = (char*)malloc((Len+1)*sizeof(char));
memcpy(Result, str, Len);
Result[Len] = 0;
return Result;
}
#ifdef strcpy
#undef strcpy
#endif
char *strcpy(char *s1, const char *s2) {
char *dest = s1;
while ((*s1++ = *s2++));
return dest;
}
#ifdef strncpy
#undef strncpy
#endif
char *strncpy(char *s1, const char *s2, size_t n) {
char *dest = s1;
while (n-- && (*s1++ = *s2++));
return dest;
}
#ifdef strcat
#undef strcat
#endif
char *strcat(char *s1, const char *s2) {
strcpy(s1+strlen(s1), s2);
return s1;
}
#ifdef strcmp
#undef strcmp
#endif
/* Compare S1 and S2, returning less than, equal to or
greater than zero if S1 is lexicographically less than,
equal to or greater than S2. */
int strcmp (const char *p1, const char *p2) {
register const unsigned char *s1 = (const unsigned char *) p1;
register const unsigned char *s2 = (const unsigned char *) p2;
unsigned char c1, c2;
do
{
c1 = (unsigned char) *s1++;
c2 = (unsigned char) *s2++;
if (c1 == '\0')
return c1 - c2;
}
while (c1 == c2);
return c1 - c2;
}
// http://sources.redhat.com/cgi-bin/cvsweb.cgi/libc/sysdeps/generic/?cvsroot=glibc
#if 0
typedef unsigned int op_t;
#define OPSIZ 4
void *memset (void *dstpp, int c, size_t len) {
long long int dstp = (long long int) dstpp;
if (len >= 8)
{
size_t xlen;
op_t cccc;
cccc = (unsigned char) c;
cccc |= cccc << 8;
cccc |= cccc << 16;
if (OPSIZ > 4)
/* Do the shift in two steps to avoid warning if long has 32 bits. */
cccc |= (cccc << 16) << 16;
/* There are at least some bytes to set.
No need to test for LEN == 0 in this alignment loop. */
while (dstp % OPSIZ != 0)
{
((unsigned char *) dstp)[0] = c;
dstp += 1;
len -= 1;
}
/* Write 8 `op_t' per iteration until less than 8 `op_t' remain. */
xlen = len / (OPSIZ * 8);
while (xlen > 0)
{
((op_t *) dstp)[0] = cccc;
((op_t *) dstp)[1] = cccc;
((op_t *) dstp)[2] = cccc;
((op_t *) dstp)[3] = cccc;
((op_t *) dstp)[4] = cccc;
((op_t *) dstp)[5] = cccc;
((op_t *) dstp)[6] = cccc;
((op_t *) dstp)[7] = cccc;
dstp += 8 * OPSIZ;
xlen -= 1;
}
len %= OPSIZ * 8;
/* Write 1 `op_t' per iteration until less than OPSIZ bytes remain. */
xlen = len / OPSIZ;
while (xlen > 0)
{
((op_t *) dstp)[0] = cccc;
dstp += OPSIZ;
xlen -= 1;
}
len %= OPSIZ;
}
/* Write the last few bytes. */
while (len > 0)
{
((unsigned char *) dstp)[0] = c;
dstp += 1;
len -= 1;
}
return dstpp;
}
#endif
#ifdef memcpy
#undef memcpy
#endif
void *memcpy(void *dstpp, const void *srcpp, size_t len) {
char *dstp = (char*)dstpp;
char *srcp = (char*) srcpp;
unsigned i;
for (i = 0; i < len; ++i)
dstp[i] = srcp[i];
return dstpp;
}

16
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##===- runtime/GCCLibraries/libgcc/Makefile ----------------*- Makefile -*-===##
#
# The LLVM Compiler Infrastructure
#
# This file was developed by the LLVM research group and is distributed under
# the University of Illinois Open Source License. See LICENSE.TXT for details.
#
##===----------------------------------------------------------------------===##
LEVEL = ../../..
BYTECODE_LIBRARY = 1
DONT_BUILD_RELINKED = 1
LIBRARYNAME = gcc
BYTECODE_DESTINATION = $(CFERuntimeLibDir)
include $(LEVEL)/Makefile.common

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#include <stdio.h>
void abort(void);
/* This is used by the `assert' macro. */
void
__eprintf (const char *string, const char *expression,
unsigned int line, const char *filename)
{
fprintf (stderr, string, expression, line, filename);
fflush (stderr);
abort ();
}

16
runtime/GCCLibraries/libm/Makefile Normal file
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##===- runtime/GCCLibraries/libm/Makefile ------------------*- Makefile -*-===##
#
# The LLVM Compiler Infrastructure
#
# This file was developed by the LLVM research group and is distributed under
# the University of Illinois Open Source License. See LICENSE.TXT for details.
#
##===----------------------------------------------------------------------===##
LEVEL = ../../..
BYTECODE_LIBRARY = 1
DONT_BUILD_RELINKED = 1
LIBRARYNAME = m
BYTECODE_DESTINATION = $(CFERuntimeLibDir)
include $(LEVEL)/Makefile.common

1
runtime/GCCLibraries/libm/temp.c Normal file
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typedef int INTEGER;

43
runtime/Makefile Normal file
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##===- runtime/Makefile ------------------------------------*- Makefile -*-===##
#
# The LLVM Compiler Infrastructure
#
# This file was developed by the LLVM research group and is distributed under
# the University of Illinois Open Source License. See LICENSE.TXT for details.
#
##===----------------------------------------------------------------------===##
LEVEL = ..
include $(LEVEL)/Makefile.config
ifeq ($(LLVMGCC_MAJVERS),4)
PARALLEL_DIRS :=
install all::
$(Echo) "Warning: These runtime libraries only need to be built with"
$(Echo) "Warning: llvm-gcc version 3. They are automatically included"
$(Echo) "Warning: with llvm-gcc version 4 and beyond"
else
ifneq ($(wildcard $(LLVMGCC)),)
PARALLEL_DIRS := GCCLibraries libdummy libprofile libtrace GC
else
PARALLEL_DIRS :=
install all ::
@echo '********' Warning: Your LLVMGCCDIR is set incorrectly. Check
@echo '********' Warning: llvm/Makefile.config to make sure it matches
@echo '********' Warning: the directory where the C front-end is
@echo '********' Warning: installed,and re-run configure if it does not.
endif
# Disable libprofile: a faulty libtool is generated by autoconf which breaks the
# build on Sparc
ifeq ($(ARCH), Sparc)
PARALLEL_DIRS := $(filter-out libprofile, $(PARALLEL_DIRS))
endif
endif
include $(LEVEL)/Makefile.common
# Install target for libraries: Copy into $LLVMGCCDIR/bytecode-libs
#
install::

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runtime/README.txt Normal file
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This directory contains the various runtime libraries used by components of
the LLVM compiler. For example, the automatic pool allocation transformation
inserts calls to an external pool allocator library. This runtime library is
an example of the type of library that lives in these directories.

19
runtime/libdummy/Makefile Normal file
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##===- runtime/libdummy/Makefile ---------------------------*- Makefile -*-===##
#
# The LLVM Compiler Infrastructure
#
# This file was developed by the LLVM research group and is distributed under
# the University of Illinois Open Source License. See LICENSE.TXT for details.
#
##===----------------------------------------------------------------------===##
LEVEL = ../..
BYTECODE_LIBRARY = 1
DONT_BUILD_RELINKED = 1
LIBRARYNAME = dummy
BYTECODE_DESTINATION = $(CFERuntimeLibDir)
include $(LEVEL)/Makefile.common
CompileCommonOpts := $(filter-out -pedantic,$(CompileCommonOpts))
CompileCommonOpts := $(filter-out -Wno-long-long,$(CompileCommonOpts))

2
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This directory contains stub routines which are occasionally useful when
performing alias analysis research.

144
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#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <stdarg.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#if 0
int stat(const char *file_name, struct stat *buf) { return 0; }
int fstat(int filedes, struct stat *buf) { return 0; }
int lstat(const char *file_name, struct stat *buf) { return 0; }
// Varargs function definitions
int ioctl(int d, int request, ...) {return 0; }
int printf(const char *X) {return 0; }
int sscanf(const char *X, const char *Y, ...) { return 0; }
int fprintf(FILE *stream, const char *format, ...) { return 0; }
int gettimeofday(struct timeval *tv, void *tz) { return 0; }
void *xmalloc(size_t X) { return malloc(X); }
void srand(unsigned x) {}
double exp(double x) { return 0; }
double log(double x) { return 0; }
double sqrt(double x) { return 0; }
void exit(int x) {}
int puts(const char *x) { return 0; }
void __main() {}
int atoi(const char*x) { return 1; }
char *fgets(char*Ptr, int x, FILE*F) { return Ptr; }
char *gets(char *C) { return C; }
int fclose(FILE*F) { return 0; }
FILE *fopen(const char *n, const char*x) { return malloc(sizeof(FILE)); }
FILE *freopen(const char *path, const char *mode, FILE *stream) { return 0; }
int fflush(FILE *F) { return 0; }
size_t fwrite(const void* str, size_t N, size_t n, FILE *F) { return N; }
void *memset(void *P, int X, size_t N) { return P; }
void *memcpy(void *P, void *S, size_t N) { return P; }
void *memmove(void *P, void *S, size_t N) { return P; }
char *strcpy(char*Str1, const char *Str) { return Str1; }
char *strcat(char*Str1, const char *Str) { return Str1; }
size_t strlen(char *X) { return 0; }
#undef putchar
int putchar(int N) { return N; }
int putc(int c, FILE *stream) { return c; }
int fputc(int c, FILE *stream) { return c; }
int fgetc(FILE *S) { return 0; }
long ftell(FILE *F) { return 0; }
int getc(FILE *S) { return 0; }
size_t fread(void *ptr, size_t size, size_t nmemb, FILE *stream) { return 0; }
int fseek(FILE *stream, long offset, int whence) { return 0; }
int feof(FILE *stream) { return 0; }
int fputs(const char *s, char *stream) { return 0; }
int ferror(FILE *F) { return 0; }
FILE *fdopen(int fildes, const char *mode) { return 0;}
FILE *popen(const char *command, const char *type) { return 0; }
int pclose(FILE *stream) { return 0; }
int ungetc(int c, FILE *stream) { return 0; }
int setvbuf(FILE *stream, char *buf, int mode , size_t size) { return 0; }
void rewind(FILE*F) { }
int fileno(FILE *stream) { return 1; }
char *ttyname(int desc) { return 0; }
long sysconf(int name) { return 0; }
char *tmpnam(char *s) { return s; }
void *calloc(size_t A, size_t B) { return malloc(A*B); }
void *realloc(void *ptr, size_t N) { return ptr; }
const char *strerror(int N) { return 0; }
int unlink(const char *path) { return 0; }
void perror(const char *err) {}
char *strrchr(const char *S, int C) { return (char*)S; }
int memcmp(const char *A, const char *B, size_t N) { return 0; }
ssize_t read(int fildes, void *buf, size_t nbyte) { return nbyte; }
int close(int FD) { return 0; }
int rename(const char *oldpath, const char *newpath) { return 0; }
ssize_t write(int fd, const void *buf, size_t count) { return 0; }
pid_t getpid(void) { return 0; }
pid_t getppid(void) { return 0; }
void setbuf(FILE *stream, char *buf) {}
int isatty(int desc) { return 0; }
int vsprintf(char *str, const char *format, va_list ap) { return 0; }
char *getcwd(char *buf, size_t size) { return buf; }
void qsort(void *base, size_t nmemb, size_t size,
int(*compar)(const void *, const void *)) {
compar(base, base);
}
#include <sys/times.h>
clock_t times(struct tms *buf) { return 0; }
#include <setjmp.h>
int setjmp(jmp_buf env) { return 0; }
void longjmp(jmp_buf env, int val) {}
int kill(pid_t pid, int sig) { return 0; }
int system(const char *string) { return 0; }
char *getenv(const char *name) { return 0; }
typedef void (*sighandler_t)(int);
sighandler_t signal(int signum, sighandler_t handler) { return handler; }
char *strchr(const char *s, int c) { return (char*)s; }
int strcmp(const char *s1, const char *s2) { return 0; }
int strncmp(const char *s1, const char *s2, size_t n) { return 0; }
char *strncpy(char *s1, const char *s2, size_t n) { return s1; }
char *strpbrk(const char *s, const char *accept) { return (char*)s; }
char *strncat(char *dest, const char *src, size_t n) { return dest; }
double atof(const char *C) { return 0; }
long clock() { return 0; }
char *ctime(const time_t *timep) { return 0; }
time_t time(time_t *t) { return *t = 0; }
double sin(double x) { return x; }
double cos(double x) { return x; }
double tan(double x) { return x; }
double asin(double x) { return x; }
double acos(double x) { return x; }
double atan(double x) { return x; }
double cosh(double x) { return x; }
double sinh(double x) { return x; }
double ceil(double x) { return x; }
double floor(double x) { return x; }
double atan2(double x, double y) { return x; }
double fmod(double x, double y) { return x; }
double pow(double x, double y) { return x; }
int tolower(int x) { return x; }
int toupper(int x) { return x; }
#endif

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/*===-- BasicBlockTracing.c - Support library for basic block tracing -----===*\
|*
|* The LLVM Compiler Infrastructure
|*
|* This file was developed by the LLVM research group and is distributed under
|* the University of Illinois Open Source License. See LICENSE.TXT for details.
|*
|*===----------------------------------------------------------------------===*|
|*
|* This file implements the call back routines for the basic block tracing
|* instrumentation pass. This should be used with the -trace-basic-blocks
|* LLVM pass.
|*
\*===----------------------------------------------------------------------===*/
#include "Profiling.h"
#include <stdlib.h>
#include <stdio.h>
static unsigned *ArrayStart, *ArrayEnd, *ArrayCursor;
/* WriteAndFlushBBTraceData - write out the currently accumulated trace data
* and reset the cursor to point to the beginning of the buffer.
*/
static void WriteAndFlushBBTraceData () {
write_profiling_data(BBTraceInfo, ArrayStart, (ArrayCursor - ArrayStart));
ArrayCursor = ArrayStart;
}
/* BBTraceAtExitHandler - When the program exits, just write out any remaining
* data and free the trace buffer.
*/
static void BBTraceAtExitHandler() {
WriteAndFlushBBTraceData ();
free (ArrayStart);
}
/* llvm_trace_basic_block - called upon hitting a new basic block. */
void llvm_trace_basic_block (unsigned BBNum) {
*ArrayCursor++ = BBNum;
if (ArrayCursor == ArrayEnd)
WriteAndFlushBBTraceData ();
}
/* llvm_start_basic_block_tracing - This is the main entry point of the basic
* block tracing library. It is responsible for setting up the atexit
* handler and allocating the trace buffer.
*/
int llvm_start_basic_block_tracing(int argc, const char **argv,
unsigned *arrayStart, unsigned numElements) {
int Ret;
const unsigned BufferSize = 128 * 1024;
unsigned ArraySize;
Ret = save_arguments(argc, argv);
/* Allocate a buffer to contain BB tracing data */
ArraySize = BufferSize / sizeof (unsigned);
ArrayStart = malloc (ArraySize * sizeof (unsigned));
ArrayEnd = ArrayStart + ArraySize;
ArrayCursor = ArrayStart;
/* Set up the atexit handler. */
atexit (BBTraceAtExitHandler);
return Ret;
}

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/*===-- BlockProfiling.c - Support library for block profiling ------------===*\
|*
|* The LLVM Compiler Infrastructure
|*
|* This file was developed by the LLVM research group and is distributed under
|* the University of Illinois Open Source License. See LICENSE.TXT for details.
|*
|*===----------------------------------------------------------------------===*|
|*
|* This file implements the call back routines for the block profiling
|* instrumentation pass. This should be used with the -insert-block-profiling
|* LLVM pass.
|*
\*===----------------------------------------------------------------------===*/
#include "Profiling.h"
#include <stdlib.h>
static unsigned *ArrayStart;
static unsigned NumElements;
/* BlockProfAtExitHandler - When the program exits, just write out the profiling
* data.
*/
static void BlockProfAtExitHandler() {
/* Note that if this were doing something more intelligent with the
* instrumentation, we could do some computation here to expand what we
* collected into simple block profiles. (Or we could do it in llvm-prof.)
* Regardless, we directly count each block, so no expansion is necessary.
*/
write_profiling_data(BlockInfo, ArrayStart, NumElements);
}
/* llvm_start_block_profiling - This is the main entry point of the block
* profiling library. It is responsible for setting up the atexit handler.
*/
int llvm_start_block_profiling(int argc, const char **argv,
unsigned *arrayStart, unsigned numElements) {
int Ret = save_arguments(argc, argv);
ArrayStart = arrayStart;
NumElements = numElements;
atexit(BlockProfAtExitHandler);
return Ret;
}

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/*===-- CommonProfiling.c - Profiling support library support -------------===*\
|*
|* The LLVM Compiler Infrastructure
|*
|* This file was developed by the LLVM research group and is distributed under
|* the University of Illinois Open Source License. See LICENSE.TXT for details.
|*
|*===----------------------------------------------------------------------===*|
|*
|* This file implements functions used by the various different types of
|* profiling implementations.
|*
\*===----------------------------------------------------------------------===*/
#include "Profiling.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
static char *SavedArgs = 0;
static unsigned SavedArgsLength = 0;
static const char *OutputFilename = "llvmprof.out";
/* save_arguments - Save argc and argv as passed into the program for the file
* we output.
*/
int save_arguments(int argc, const char **argv) {
unsigned Length, i;
if (SavedArgs || !argv) return argc; /* This can be called multiple times */
/* Check to see if there are any arguments passed into the program for the
* profiler. If there are, strip them off and remember their settings.
*/
while (argc > 1 && !strncmp(argv[1], "-llvmprof-", 10)) {
/* Ok, we have an llvmprof argument. Remove it from the arg list and decide
* what to do with it.
*/
const char *Arg = argv[1];
memmove(&argv[1], &argv[2], (argc-1)*sizeof(char*));
--argc;
if (!strcmp(Arg, "-llvmprof-output")) {
if (argc == 1)
puts("-llvmprof-output requires a filename argument!");
else {
OutputFilename = strdup(argv[1]);
memmove(&argv[1], &argv[2], (argc-1)*sizeof(char*));
--argc;
}
} else {
printf("Unknown option to the profiler runtime: '%s' - ignored.\n", Arg);
}
}
for (Length = 0, i = 0; i != (unsigned)argc; ++i)
Length += strlen(argv[i])+1;
SavedArgs = (char*)malloc(Length);
for (Length = 0, i = 0; i != (unsigned)argc; ++i) {
unsigned Len = strlen(argv[i]);
memcpy(SavedArgs+Length, argv[i], Len);
Length += Len;
SavedArgs[Length++] = ' ';
}
SavedArgsLength = Length;
return argc;
}
/* write_profiling_data - Write a raw block of profiling counters out to the
* llvmprof.out file. Note that we allow programs to be instrumented with
* multiple different kinds of instrumentation. For this reason, this function
* may be called more than once.
*/
void write_profiling_data(enum ProfilingType PT, unsigned *Start,
unsigned NumElements) {
static int OutFile = -1;
int PTy;
/* If this is the first time this function is called, open the output file for
* appending, creating it if it does not already exist.
*/
if (OutFile == -1) {
OutFile = open(OutputFilename, O_CREAT | O_WRONLY | O_APPEND, 0666);
if (OutFile == -1) {
fprintf(stderr, "LLVM profiling runtime: while opening '%s': ",
OutputFilename);
perror("");
return;
}
/* Output the command line arguments to the file. */
{
int PTy = ArgumentInfo;
int Zeros = 0;
write(OutFile, &PTy, sizeof(int));
write(OutFile, &SavedArgsLength, sizeof(unsigned));
write(OutFile, SavedArgs, SavedArgsLength);
/* Pad out to a multiple of four bytes */
if (SavedArgsLength & 3)
write(OutFile, &Zeros, 4-(SavedArgsLength&3));
}
}
/* Write out this record! */
PTy = PT;
write(OutFile, &PTy, sizeof(int));
write(OutFile, &NumElements, sizeof(unsigned));
write(OutFile, Start, NumElements*sizeof(unsigned));
}

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/*===-- EdgeProfiling.c - Support library for edge profiling --------------===*\
|*
|* The LLVM Compiler Infrastructure
|*
|* This file was developed by the LLVM research group and is distributed under
|* the University of Illinois Open Source License. See LICENSE.TXT for details.
|*
|*===----------------------------------------------------------------------===*|
|*
|* This file implements the call back routines for the edge profiling
|* instrumentation pass. This should be used with the -insert-edge-profiling
|* LLVM pass.
|*
\*===----------------------------------------------------------------------===*/
#include "Profiling.h"
#include <stdlib.h>
static unsigned *ArrayStart;
static unsigned NumElements;
/* EdgeProfAtExitHandler - When the program exits, just write out the profiling
* data.
*/
static void EdgeProfAtExitHandler() {
/* Note that if this were doing something more intelligent with the
* instrumentation, we could do some computation here to expand what we
* collected into simple edge profiles. Since we directly count each edge, we
* just write out all of the counters directly.
*/
write_profiling_data(EdgeInfo, ArrayStart, NumElements);
}
/* llvm_start_edge_profiling - This is the main entry point of the edge
* profiling library. It is responsible for setting up the atexit handler.
*/
int llvm_start_edge_profiling(int argc, const char **argv,
unsigned *arrayStart, unsigned numElements) {
int Ret = save_arguments(argc, argv);
ArrayStart = arrayStart;
NumElements = numElements;
atexit(EdgeProfAtExitHandler);
return Ret;
}

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/*===-- FunctionProfiling.c - Support library for function profiling ------===*\
|*
|* The LLVM Compiler Infrastructure
|*
|* This file was developed by the LLVM research group and is distributed under
|* the University of Illinois Open Source License. See LICENSE.TXT for details.
|*
|*===----------------------------------------------------------------------===*|
|*
|* This file implements the call back routines for the function profiling
|* instrumentation pass. This should be used with the
|* -insert-function-profiling LLVM pass.
|*
\*===----------------------------------------------------------------------===*/
#include "Profiling.h"
#include <stdlib.h>
static unsigned *ArrayStart;
static unsigned NumElements;
/* FuncProfAtExitHandler - When the program exits, just write out the profiling
* data.
*/
static void FuncProfAtExitHandler() {
/* Just write out the data we collected.
*/
write_profiling_data(FunctionInfo, ArrayStart, NumElements);
}
/* llvm_start_func_profiling - This is the main entry point of the function
* profiling library. It is responsible for setting up the atexit handler.
*/
int llvm_start_func_profiling(int argc, const char **argv,
unsigned *arrayStart, unsigned numElements) {
int Ret = save_arguments(argc, argv);
ArrayStart = arrayStart;
NumElements = numElements;
atexit(FuncProfAtExitHandler);
return Ret;
}

19
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##===- runtime/libprofile/Makefile -------------------------*- Makefile -*-===##
#
# The LLVM Compiler Infrastructure
#
# This file was developed by the LLVM research group and is distributed under
# the University of Illinois Open Source License. See LICENSE.TXT for details.
#
##===----------------------------------------------------------------------===##
LEVEL = ../..
BYTECODE_LIBRARY = 1
SHARED_LIBRARY = 1
LOADABLE_MODULE = 1
LIBRARYNAME = profile_rt
EXTRA_DIST = exported_symbols.lst
EXPORTED_SYMBOL_FILE = $(PROJ_SRC_DIR)/exported_symbols.lst
BYTECODE_DESTINATION = $(CFERuntimeLibDir)
include $(LEVEL)/Makefile.common

31
runtime/libprofile/Profiling.h Normal file
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/*===-- Profiling.h - Profiling support library support routines --*- C -*-===*\
|*
|* The LLVM Compiler Infrastructure
|*
|* This file was developed by the LLVM research group and is distributed under
|* the University of Illinois Open Source License. See LICENSE.TXT for details.
|*
|*===----------------------------------------------------------------------===*|
|*
|* This file defines functions shared by the various different profiling
|* implementations.
|*
\*===----------------------------------------------------------------------===*/
#ifndef PROFILING_H
#define PROFILING_H
#include "llvm/Analysis/ProfileInfoTypes.h" /* for enum ProfilingType */
/* save_arguments - Save argc and argv as passed into the program for the file
* we output.
*/
int save_arguments(int argc, const char **argv);
/* write_profiling_data - Write out a typed packet of profiling data to the
* current output file.
*/
void write_profiling_data(enum ProfilingType PT, unsigned *Start,
unsigned NumElements);
#endif

5
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llvm_start_func_profiling
llvm_start_block_profiling
llvm_start_basic_block_tracing
llvm_trace_basic_block

18
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##===- runtime/libtrace/Makefile ---------------------------*- Makefile -*-===##
#
# The LLVM Compiler Infrastructure
#
# This file was developed by the LLVM research group and is distributed under
# the University of Illinois Open Source License. See LICENSE.TXT for details.
#
##===----------------------------------------------------------------------===##
LEVEL = ../..
BYTECODE_LIBRARY = 1
LIBRARYNAME = trace
BYTECODE_DESTINATION = $(CFERuntimeLibDir)
include $(LEVEL)/Makefile.common
CompileCommonOpts := $(filter-out -pedantic,$(CompileCommonOpts))
CompileCommonOpts := $(filter-out -Wno-long-long,$(CompileCommonOpts))

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These routines form the support library for the LLVM -trace and -tracem
instrumentation passes.

392
runtime/libtrace/tracelib.c Normal file
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/*===-- tracelib.c - Runtime routines for tracing ---------------*- C++ -*-===*
*
* Runtime routines for supporting tracing of execution for code generated by
* LLVM.
*
*===----------------------------------------------------------------------===*/
#include "tracelib.h"
#include <assert.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "llvm/Support/DataTypes.h"
/*===---------------------------------------------------------------------=====
* HASH FUNCTIONS
*===---------------------------------------------------------------------===*/
/* use #defines until we have inlining */
typedef uintptr_t Index; /* type of keys, size for hash table */
typedef uint32_t Generic; /* type of values stored in table */
/* Index IntegerHashFunc(const Generic value, const Index size) */
#define IntegerHashFunc(value, size) \
( ((((Index) value) << 3) ^ (((Index) value) >> 3)) % size )
/* Index IntegerRehashFunc(const Generic oldHashValue, const Index size) */
#define IntegerRehashFunc(oldHashValue, size) \
((Index) ((oldHashValue+16) % size)) /* 16 is relatively prime to a Mersenne prime! */
/* Index PointerHashFunc(const void* value, const Index size) */
#define PointerHashFunc(value, size) \
IntegerHashFunc((Index) value, size)
/* Index PointerRehashFunc(const void* value, const Index size) */
#define PointerRehashFunc(value, size) \
IntegerRehashFunc((Index) value, size)
/*===---------------------------------------------------------------------=====
* POINTER-TO-GENERIC HASH TABLE.
* These should be moved to a separate location: HashTable.[ch]
*===---------------------------------------------------------------------===*/
typedef enum { FIND, ENTER } ACTION;
typedef char FULLEMPTY;
const FULLEMPTY EMPTY = '\0';
const FULLEMPTY FULL = '\1';
// List of primes closest to powers of 2 in [2^20 -- 2^30], obtained from
// http://www.utm.edu/research/primes/lists/2small/0bit.html.
// Use these as the successive sizes of the hash table.
#define NUMPRIMES 11
#define FIRSTENTRY 2
const unsigned PRIMES[NUMPRIMES] = { (1<<20)-3, (1<<21)-9, (1<<22)-3, (1<<23)-15,
(1<<24)-3, (1<<25)-39, (1<<26)-5, (1<<27)-39,
(1<<28)-57, (1<<29)-3, (1<<30)-35 };
unsigned CurrentSizeEntry = FIRSTENTRY;
const unsigned MAX_NUM_PROBES = 4;
typedef struct PtrValueHashEntry_struct {
void* key;
Generic value;
} PtrValueHashEntry;
typedef struct PtrValueHashTable_struct {
PtrValueHashEntry* table;
FULLEMPTY* fullEmptyFlags;
Index capacity;
Index size;
} PtrValueHashTable;
static Generic LookupOrInsertPtr(PtrValueHashTable* ptrTable, void* ptr,
ACTION action, Generic value);
static void Insert(PtrValueHashTable* ptrTable, void* ptr, Generic value);
static void Delete(PtrValueHashTable* ptrTable, void* ptr);
/* Returns 0 if the item is not found. */
/* void* LookupPtr(PtrValueHashTable* ptrTable, void* ptr) */
#define LookupPtr(ptrTable, ptr) \
LookupOrInsertPtr(ptrTable, ptr, FIND, (Generic) 0)
void
InitializeTable(PtrValueHashTable* ptrTable, Index newSize)
{
ptrTable->table = (PtrValueHashEntry*) calloc(newSize,
sizeof(PtrValueHashEntry));
ptrTable->fullEmptyFlags = (FULLEMPTY*) calloc(newSize, sizeof(FULLEMPTY));
ptrTable->capacity = newSize;
ptrTable->size = 0;
}
PtrValueHashTable*
CreateTable(Index initialSize)
{
PtrValueHashTable* ptrTable =
(PtrValueHashTable*) malloc(sizeof(PtrValueHashTable));
InitializeTable(ptrTable, initialSize);
return ptrTable;
}
void
ReallocTable(PtrValueHashTable* ptrTable, Index newSize)
{
if (newSize <= ptrTable->capacity)
return;
#ifndef NDEBUG
printf("\n***\n*** REALLOCATING SPACE FOR POINTER HASH TABLE.\n");
printf("*** oldSize = %ld, oldCapacity = %ld\n***\n\n",
(long) ptrTable->size, (long) ptrTable->capacity);
#endif
unsigned int i;
PtrValueHashEntry* oldTable = ptrTable->table;
FULLEMPTY* oldFlags = ptrTable->fullEmptyFlags;
Index oldSize = ptrTable->size;
Index oldCapacity = ptrTable->capacity;
/* allocate the new storage and flags and re-insert the old entries */
InitializeTable(ptrTable, newSize);
for (i=0; i < oldCapacity; ++i)
if (oldFlags[i] == FULL)
Insert(ptrTable, oldTable[i].key, oldTable[i].value);
assert(ptrTable->size == oldSize && "Incorrect number of entries copied?");
#ifndef NDEBUG
for (i=0; i < oldCapacity; ++i)
if (oldFlags[i] == FULL)
assert(LookupPtr(ptrTable, oldTable[i].key) == oldTable[i].value);
#endif
free(oldTable);
free(oldFlags);
}
void
DeleteTable(PtrValueHashTable* ptrTable)
{
free(ptrTable->table);
free(ptrTable->fullEmptyFlags);
memset(ptrTable, '\0', sizeof(PtrValueHashTable));
free(ptrTable);
}
void
InsertAtIndex(PtrValueHashTable* ptrTable, void* ptr, Generic value, Index index)
{
assert(ptrTable->fullEmptyFlags[index] == EMPTY && "Slot is in use!");
ptrTable->table[index].key = ptr;
ptrTable->table[index].value = value;
ptrTable->fullEmptyFlags[index] = FULL;
ptrTable->size++;
}
void
DeleteAtIndex(PtrValueHashTable* ptrTable, Index index)
{
assert(ptrTable->fullEmptyFlags[index] == FULL && "Deleting empty slot!");
ptrTable->table[index].key = 0;
ptrTable->table[index].value = (Generic) 0;
ptrTable->fullEmptyFlags[index] = EMPTY;
ptrTable->size--;
}
Index
FindIndex(PtrValueHashTable* ptrTable, void* ptr)
{
unsigned numProbes = 1;
Index index = PointerHashFunc(ptr, ptrTable->capacity);
if (ptrTable->fullEmptyFlags[index] == FULL)
{
if (ptrTable->table[index].key == ptr)
return index;
/* First lookup failed on non-empty slot: probe further */
while (numProbes < MAX_NUM_PROBES)
{
index = PointerRehashFunc(index, ptrTable->capacity);
if (ptrTable->fullEmptyFlags[index] == EMPTY)
break;
else if (ptrTable->table[index].key == ptr)
return index;
++numProbes;
}
}
/* Lookup failed: item is not in the table. */
/* If last slot is empty, use that slot. */
/* Otherwise, table must have been reallocated, so search again. */
if (numProbes == MAX_NUM_PROBES)
{ /* table is too full: reallocate and search again */
if (CurrentSizeEntry >= NUMPRIMES-1) {
fprintf(stderr, "Out of PRIME Numbers!!!");
abort();
}
ReallocTable(ptrTable, PRIMES[++CurrentSizeEntry]);
return FindIndex(ptrTable, ptr);
}
else
{
assert(ptrTable->fullEmptyFlags[index] == EMPTY &&
"Stopped before finding an empty slot and before MAX probes!");
return index;
}
}
/* Look up hash table using 'ptr' as the key. If an entry exists, return
* the value mapped to 'ptr'. If not, and if action==ENTER is specified,
* create a new entry with value 'value', but return 0 in any case.
*/
Generic
LookupOrInsertPtr(PtrValueHashTable* ptrTable, void* ptr, ACTION action,
Generic value)
{
Index index = FindIndex(ptrTable, ptr);
if (ptrTable->fullEmptyFlags[index] == FULL &&
ptrTable->table[index].key == ptr)
return ptrTable->table[index].value;
/* Lookup failed: item is not in the table */
/* If action is ENTER, insert item into the table. Return 0 in any case. */
if (action == ENTER)
InsertAtIndex(ptrTable, ptr, value, index);
return (Generic) 0;
}
void
Insert(PtrValueHashTable* ptrTable, void* ptr, Generic value)
{
Index index = FindIndex(ptrTable, ptr);
assert(ptrTable->fullEmptyFlags[index] == EMPTY &&
"ptr is already in the table: delete it first!");
InsertAtIndex(ptrTable, ptr, value, index);
}
void
Delete(PtrValueHashTable* ptrTable, void* ptr)
{
Index index = FindIndex(ptrTable, ptr);
if (ptrTable->fullEmptyFlags[index] == FULL &&
ptrTable->table[index].key == ptr)
{
DeleteAtIndex(ptrTable, index);
}
}
/*===---------------------------------------------------------------------=====
* RUNTIME ROUTINES TO MAP POINTERS TO SEQUENCE NUMBERS
*===---------------------------------------------------------------------===*/
PtrValueHashTable* SequenceNumberTable = NULL;
#define INITIAL_SIZE (PRIMES[FIRSTENTRY])
#define MAX_NUM_SAVED 1024
typedef struct PointerSet_struct {
char* savedPointers[MAX_NUM_SAVED]; /* 1024 alloca'd ptrs shd suffice */
unsigned int numSaved;
struct PointerSet_struct* nextOnStack; /* implement a cheap stack */
} PointerSet;
PointerSet* topOfStack = NULL;
SequenceNumber
HashPointerToSeqNum(char* ptr)
{
static SequenceNumber count = 0;
SequenceNumber seqnum;
if (SequenceNumberTable == NULL) {
assert(MAX_NUM_PROBES < INITIAL_SIZE+1 && "Initial size too small");
SequenceNumberTable = CreateTable(INITIAL_SIZE);
}
seqnum = (SequenceNumber)
LookupOrInsertPtr(SequenceNumberTable, ptr, ENTER, count+1);
if (seqnum == 0) /* new entry was created with value count+1 */
seqnum = ++count; /* so increment counter */
assert(seqnum <= count && "Invalid sequence number in table!");
return seqnum;
}
void
ReleasePointerSeqNum(char* ptr)
{ /* if a sequence number was assigned to this ptr, release it */
if (SequenceNumberTable != NULL)
Delete(SequenceNumberTable, ptr);
}
void
PushPointerSet()
{
PointerSet* newSet = (PointerSet*) malloc(sizeof(PointerSet));
newSet->numSaved = 0;
newSet->nextOnStack = topOfStack;
topOfStack = newSet;
}
void
PopPointerSet()
{
PointerSet* oldSet;
assert(topOfStack != NULL && "popping from empty stack!");
oldSet = topOfStack;
topOfStack = oldSet->nextOnStack;
assert(oldSet->numSaved == 0);
free(oldSet);
}
/* free the pointers! */
static void
ReleaseRecordedPointers(char* savedPointers[MAX_NUM_SAVED],
unsigned int numSaved)
{
unsigned int i;
for (i=0; i < topOfStack->numSaved; ++i)
ReleasePointerSeqNum(topOfStack->savedPointers[i]);
}
void
ReleasePointersPopSet()
{
ReleaseRecordedPointers(topOfStack->savedPointers, topOfStack->numSaved);
topOfStack->numSaved = 0;
PopPointerSet();
}
void
RecordPointer(char* ptr)
{ /* record pointers for release later */
if (topOfStack->numSaved == MAX_NUM_SAVED) {
printf("***\n*** WARNING: OUT OF ROOM FOR SAVED POINTERS."
" ALL POINTERS ARE BEING FREED.\n"
"*** THE SEQUENCE NUMBERS OF SAVED POINTERS WILL CHANGE!\n*** \n");
ReleaseRecordedPointers(topOfStack->savedPointers, topOfStack->numSaved);
topOfStack->numSaved = 0;
}
topOfStack->savedPointers[topOfStack->numSaved++] = ptr;
}
/*===---------------------------------------------------------------------=====
* TEST DRIVER FOR INSTRUMENTATION LIBRARY
*===---------------------------------------------------------------------===*/
#ifndef TEST_INSTRLIB
#undef TEST_INSTRLIB /* #define this to turn on by default */
#endif
#ifdef TEST_INSTRLIB
int
main(int argc, char** argv)
{
int i, j;
int doRelease = 0;
INITIAL_SIZE = 5; /* start with small table to test realloc's*/
if (argc > 1 && ! strcmp(argv[1], "-r"))
{
PushPointerSet();
doRelease = 1;
}
for (i=0; i < argc; ++i)
for (j=0; argv[i][j]; ++j)
{
printf("Sequence number for argc[%d][%d] (%c) = Hash(%p) = %d\n",
i, j, argv[i][j], argv[i]+j, HashPointerToSeqNum(argv[i]+j));
if (doRelease)
RecordPointer(argv[i]+j);
}
if (doRelease)
ReleasePointersPopSet();
/* print sequence numbers out again to compare with (-r) and w/o release */
for (i=argc-1; i >= 0; --i)
for (j=0; argv[i][j]; ++j)
printf("Sequence number for argc[%d][%d] (%c) = %d\n",
i, j, argv[i][j], argv[i]+j, HashPointerToSeqNum(argv[i]+j));
return 0;
}
#endif

40
runtime/libtrace/tracelib.h Normal file
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/*===-- Libraries/tracelib.h - Runtime routines for tracing -----*- C++ -*--===
*
* Runtime routines for supporting tracing of execution
* for code generated by LLVM.
*
*===---------------------------------------------------------------------===*/
#ifndef _TEST_LIBRARIES_LIBINSTR_TRACELIB_
#define _TEST_LIBRARIES_LIBINSTR_TRACELIB_
#ifdef __cplusplus
extern "C" {
#endif
#include <sys/types.h>
/*===---------------------------------------------------------------------=====
* Support for tracing pointers
*===---------------------------------------------------------------------===*/
typedef unsigned int SequenceNumber;
extern SequenceNumber HashPointerToSeqNum( char* ptr);
extern void ReleasePointerSeqNum(char* ptr);
extern void RecordPointer(char* ptr);
extern void PushPointerSet();
extern void ReleasePointersPopSet();
#ifdef __cplusplus
}
#endif
/*===---------------------------------------------------------------------===*/
#endif