libc/CMakeLists.txt

@@ -28,7 +28,7 @@ set(LIBC_SOURCES
 	termios.cpp
 	time.cpp
 	unistd.cpp
-	math.cpp
+	math.S
 	icxxabi.cpp
 
 	../BAN/BAN/Assert.cpp

libc/arch/i386/crt0.S

@@ -1,33 +0,0 @@
-.section .text
-
-.global _start
-_start:
-	# zero out stack frame
-	pushl $0
-	pushl $0
-	movl %esp, %ebp
-
-	# FIXME: handle stack alignment
-	ud2
-
-	# push argc, argv, environ for call to main
-	pushl %edx
-	pushl %esi
-	pushl %edi
-
-	# initialize libc
-	pushl %edx
-	call _init_libc
-	addl $4, %esp
-
-	# call global constructos
-	call _init
-
-	# call main, arguments are already on stack
-	call main
-
-	# cleanly exit the process
-	pushl %eax
-	call exit
-
-.size _start, . - _start

libc/arch/i386/crti.S

@@ -1,16 +0,0 @@
-/* i386 crti.s */
-.section .init
-.global _init
-.type _init, @function
-_init:
-	pushl %ebp
-	movl %esp, %ebp
-	/* gcc will nicely put the contents of crtbegin.o's .init section here. */
-
-.section .fini
-.global _fini
-.type _fini, @function
-_fini:
-	pushl %ebp
-	movl %esp, %ebp
-	/* gcc will nicely put the contents of crtbegin.o's .fini section here. */

libc/arch/i386/crtn.S

@@ -1,10 +0,0 @@
-/* i386 crtn.s */
-.section .init
-	/* gcc will nicely put the contents of crtend.o's .init section here. */
-	popl %ebp
-	ret
-
-.section .fini
-	/* gcc will nicely put the contents of crtend.o's .fini section here. */
-	popl %ebp
-	ret

libc/math.S

@@ -0,0 +1,26 @@
+
+.global floorl;
+floorl:
+	fldt	8(%rsp)
+
+	fnstenv	-28(%rsp)		/* store fpu environment */
+
+	/* We use here %edx although only the low 1 bits are defined.
+	  But none of the operations should care and they are faster
+	  than the 16 bit operations.  */
+	movl	$0x400,%edx		/* round towards -oo */
+	orl	-28(%rsp),%edx
+	andl	$0xf7ff,%edx
+	movl	%edx,-32(%rsp)
+	fldcw	-32(%rsp)		/* load modified control word */
+
+	frndint				/* round */
+
+	/* Preserve "invalid" exceptions from sNaN input.  */
+	fnstsw
+	andl	$0x1, %eax
+	orl	%eax, -24(%rsp)
+
+	fldenv	-28(%rsp)		/* restore original environment */
+
+	ret

libc/math.cpp

@@ -1,63 +0,0 @@
-#include <math.h>
-
-#define BUILTINS1(func) \
-	float func##f(float a) { return __builtin_##func##f(a); } \
-	double func(double a) { return __builtin_##func(a); } \
-	long double func##l(long double a) { return __builtin_##func##l(a); }
-
-#define BUILTINS2(func) \
-	float func##f(float a, float b) { return __builtin_##func##f(a, b); } \
-	double func(double a, double b) { return __builtin_##func(a, b); } \
-	long double func##l(long double a, long double b) { return __builtin_##func##l(a, b); } \
-
-__BEGIN_DECLS
-
-BUILTINS1(acos)
-BUILTINS1(acosh)
-BUILTINS1(asin)
-BUILTINS1(asinh)
-BUILTINS1(atan)
-BUILTINS2(atan2)
-BUILTINS1(atanh)
-BUILTINS1(cbrt)
-BUILTINS1(ceil)
-BUILTINS2(copysign)
-BUILTINS1(cos)
-BUILTINS1(cosh)
-BUILTINS1(erf)
-BUILTINS1(erfc)
-BUILTINS1(exp)
-BUILTINS1(exp2)
-BUILTINS1(expm1)
-BUILTINS1(fabs)
-BUILTINS2(fdim)
-BUILTINS1(floor)
-BUILTINS2(fmax)
-BUILTINS2(fmin)
-BUILTINS2(fmod)
-BUILTINS2(hypot)
-BUILTINS1(j0)
-BUILTINS1(j1)
-BUILTINS1(lgamma)
-BUILTINS1(log)
-BUILTINS1(log10)
-BUILTINS1(log1p)
-BUILTINS1(log2)
-BUILTINS1(logb)
-BUILTINS1(nearbyint)
-BUILTINS2(nextafter)
-BUILTINS2(pow)
-BUILTINS2(remainder)
-BUILTINS1(rint)
-BUILTINS1(round)
-BUILTINS1(sin)
-BUILTINS1(sinh)
-BUILTINS1(sqrt)
-BUILTINS1(tan)
-BUILTINS1(tanh)
-BUILTINS1(tgamma)
-BUILTINS1(trunc)
-BUILTINS1(y0)
-BUILTINS1(y1)
-
-__END_DECLS

toolchain/build.sh

@@ -55,16 +55,10 @@ if [[ -z ${MAKE_JOBS:x} ]]; then
 	MAKE_JOBS="-j$(nproc)"
 fi
 
-if [ $BANAN_ARCH = "x86_64" ]; then
-	XCFLAGS="-g -O2 -mcmodel=large -mno-red-zone"
-else
-	XCFLAGS="-g -O2"
-fi
-
 enter_clean_build () {
-	rm -rf build-$BANAN_ARCH
+	rm -rf build
-	mkdir build-$BANAN_ARCH
+	mkdir build
-	cd build-$BANAN_ARCH
+	cd build
 }
 
 build_binutils () {
@@ -116,7 +110,7 @@ build_gcc () {
 		--enable-languages=c,c++
 
 	make $MAKE_JOBS all-gcc
-	make $MAKE_JOBS all-target-libgcc CFLAGS_FOR_TARGET="$XCFLAGS"
+	make $MAKE_JOBS all-target-libgcc CFLAGS_FOR_TARGET='-g -O2 -mcmodel=large -mno-red-zone'
 	make install-gcc
 	make install-target-libgcc
 }
@@ -148,13 +142,13 @@ build_grub () {
 }
 
 build_libstdcpp () {
-	if ! [[ -d $BANAN_BUILD_DIR/toolchain/$GCC_VERSION/build-$BANAN_ARCH ]]; then
+	if ! [[ -d $BANAN_BUILD_DIR/toolchain/$GCC_VERSION/build ]]; then
 		echo "You have to build gcc first"
 		exit 1
 	fi
 
-	cd $BANAN_BUILD_DIR/toolchain/$GCC_VERSION/build-$BANAN_ARCH
+	cd $BANAN_BUILD_DIR/toolchain/$GCC_VERSION/build
-	make $MAKE_JOBS all-target-libstdc++-v3 CFLAGS_FOR_TARGET="$XCFLAGS"
+	make $MAKE_JOBS all-target-libstdc++-v3 CFLAGS_FOR_TARGET='-g -O2 -mcmodel=large -mno-red-zone'
 	make install-target-libstdc++-v3
 }
 
@@ -168,14 +162,13 @@ echo "Creating dummy sysroot"
 mkdir -p $BANAN_SYSROOT/usr
 cp -r $BANAN_ROOT_DIR/libc/include $BANAN_SYSROOT/usr/include
 
+# Cleanup all old files from toolchain prefix
+rm -rf $BANAN_TOOLCHAIN_PREFIX
+
 mkdir -p $BANAN_BUILD_DIR/toolchain
 build_binutils
 build_gcc
-
+build_grub
-# Grub is only needed for UEFI (x86_64)
-if [ $BANAN_ARCH = "x86_64" ]; then
-	build_grub
-fi
 
 # delete sysroot and install libc
 rm -r $BANAN_SYSROOT