Use libgcc.

libmaxsi/c++.cpp

@@ -28,123 +28,3 @@ extern "C" void __attribute__ ((weak)) __cxa_pure_virtual()
 {
 	// This shouldn't happen. TODO: Possibly crash the kernel here.
 }
-
-#if defined(__i386__)
-
-extern "C" uint64_t __attribute__ ((weak)) __udivdi3(uint64_t a, uint64_t b)
-{
-	uint64_t result = 0;
-	uint64_t power = 1;
-	uint64_t remainder = a;
-	uint64_t divisor = b;
-	while ( divisor * 2 <= remainder )
-	{
-		power *= 2;
-		divisor *= 2;
-	}
-
-	while ( divisor <= remainder )
-	{
-		remainder -= divisor;
-		result += power;
-		while ( power > 1 && remainder < divisor )
-		{
-			divisor /= 2;
-			power /= 2;
-		}
-	}
-
-	return result;
-}
-
-extern "C" uint64_t __attribute__ ((weak)) __umoddi3(uint64_t a, uint64_t b)
-{
-	uint64_t result = 0;
-	uint64_t power = 1;
-	uint64_t remainder = a;
-	uint64_t divisor = b;
-	while ( divisor * 2 <= remainder )
-	{
-		power *= 2;
-		divisor *= 2;
-	}
-
-	while ( divisor <= remainder )
-	{
-		remainder -= divisor;
-		result += power;
-		while ( power > 1 && remainder < divisor )
-		{
-			divisor /= 2;
-			power /= 2;
-		}
-	}
-
-	return remainder;
-}
-
-extern "C" int64_t __attribute__ ((weak)) __divdi3(int64_t a, int64_t b)
-{
-	if ( a >= 0 && b >= 0 )
-	{
-		uint64_t numer = a;
-		uint64_t denom = b;
-		uint64_t result = __udivdi3(numer, denom);
-		return +((int64_t) result);
-	}
-	else if ( a < 0 && b >= 0 )
-	{
-		uint64_t numer = -a;
-		uint64_t denom = b;
-		uint64_t result = __udivdi3(numer, denom);
-		return -((int64_t) result);
-	}
-	else if ( a >= 0 && b < 0 )
-	{
-		uint64_t numer = a;
-		uint64_t denom = -b;
-		uint64_t result = __udivdi3(numer, denom);
-		return -((int64_t) result);
-	}
-	else // if ( a < 0 && b < 0 )
-	{
-		uint64_t numer = -a;
-		uint64_t denom = -b;
-		uint64_t result = __udivdi3(numer, denom);
-		return +((int64_t) result);
-	}
-}
-
-extern "C" int64_t __attribute__ ((weak)) __moddi3(int64_t a, int64_t b)
-{
-	if ( a >= 0 && b >= 0 )
-	{
-		uint64_t numer = a;
-		uint64_t denom = b;
-		uint64_t result = __umoddi3(numer, denom);
-		return +((int64_t) result);
-	}
-	else if ( a < 0 && b >= 0 )
-	{
-		uint64_t numer = -a;
-		uint64_t denom = b;
-		uint64_t result = __umoddi3(numer, denom);
-		return -((int64_t) result);
-	}
-	else if ( a >= 0 && b < 0 )
-	{
-		uint64_t numer = a;
-		uint64_t denom = -b;
-		uint64_t result = __umoddi3(numer, denom);
-		return +((int64_t) result);
-	}
-	else // if ( a < 0 && b < 0 )
-	{
-		uint64_t numer = -a;
-		uint64_t denom = -b;
-		uint64_t result = __umoddi3(numer, denom);
-		return -((int64_t) result);
-	}
-}
-
-#endif

sortix/Makefile

@@ -19,7 +19,7 @@ ifeq ($(CPU),x64)
     BUILDID=x64
     X86FAMILY=1
     CPUFLAGS=-ffreestanding -mno-red-zone
-    CPULDFLAGS=-z max-page-size=0x1000
+    CPULDFLAGS=
     CPUNASMFLAGS=-felf64
     CPUOBJS:=$(CPU)/base.o $(CPU)/x64.o
 endif
@@ -79,6 +79,7 @@ NASMFLAGS=$(CPUNASMFLAGS)
 
 STATICLIBS=\
 -lc-sortix \
+-lgcc \
 
 HEADERDIRS:=$(shell find include -type d)
 HEADERS:=$(shell find include -type f)
@@ -156,13 +157,13 @@ x64/boot.o: x64/boot.s
 	$(HOSTAS) -64 $< -o $@
 
 sortix-x64.tmp: $(ALLOBJS) x64/boot.o
-	$(HOSTLD) -N -melf_x86_64_sortix -Ttext 100000 -o sortix-x64-internal.out x64/boot.o $(OBJS) $(STATICLIBS) end.o
+	$(HOSTCXX) -nodefaultlibs -nostartfiles -Wl,-N -Wl,-melf_x86_64_sortix -Wl,-Ttext -Wl,100000 -Wl,-z -Wl,max-page-size=0x1000 -o sortix-x64-internal.out x64/boot.o $(OBJS) $(STATICLIBS) end.o
 	$(HOSTOBJCOPY) sortix-x64-internal.out -O elf32-i386 sortix-x64.tmp
 
 # x86 compilation
 
 sortix-x86.tmp: $(ALLOBJS)
-	$(HOSTLD) -melf_i386_sortix -Ttext 100000 -o $@ $(OBJS) $(STATICLIBS) end.o
+	$(HOSTCXX) -nodefaultlibs -nostartfiles -Wl,-melf_i386_sortix -Wl,-Ttext -Wl,100000 -o $@ $(OBJS) $(STATICLIBS) end.o
 
 # general rules