build: Use binary libgcc from GCC instead of our own stubs. Closes #180

2022-06-20 04:28:59 +02:00 · 2022-06-20 04:28:59 +02:00 · 75c3585e58
parent 547666ca63
commit 75c3585e58
6 changed files with 12 additions and 69 deletions
--- a/.gitignore
+++ b/.gitignore
@ -1,3 +1,4 @@
+/libgcc-*
 /bin
 /build
 /toolchain
--- a/GNUmakefile.in
+++ b/GNUmakefile.in
@ -191,6 +191,7 @@ dist:
 	cd '$(call SHESCAPE,$(BUILDDIR))'/"limine-$(LIMINE_VERSION)" && git checkout .
 	cd '$(call SHESCAPE,$(BUILDDIR))'/"limine-$(LIMINE_VERSION)" && ./bootstrap
 	rm -rf '$(call SHESCAPE,$(BUILDDIR))'/"limine-$(LIMINE_VERSION)/freestanding_headers/.git"
+	rm -rf '$(call SHESCAPE,$(BUILDDIR))'/"limine-$(LIMINE_VERSION)/libgcc-blobs-i386/.git"
 	rm -rf '$(call SHESCAPE,$(BUILDDIR))'/"limine-$(LIMINE_VERSION)/limine-efi/.git"
 	rm -rf '$(call SHESCAPE,$(BUILDDIR))'/"limine-$(LIMINE_VERSION)/.git"
 	rm -rf '$(call SHESCAPE,$(BUILDDIR))'/"limine-$(LIMINE_VERSION)/autom4te.cache"
@ -207,7 +208,7 @@ distclean: clean

 .PHONY: maintainer-clean
 maintainer-clean: distclean
-	cd '$(call SHESCAPE,$(SRCDIR))' && rm -rf freestanding_headers limine-efi configure build-aux *'~' autom4te.cache *.tar.xz *.tar.gz
+	cd '$(call SHESCAPE,$(SRCDIR))' && rm -rf freestanding_headers libgcc-blobs-i386 limine-efi configure build-aux *'~' autom4te.cache *.tar.xz *.tar.gz
 	cd '$(call SHESCAPE,$(SRCDIR))'/toolchain-detect && rm -rf configure *'~' autom4te.cache

 .PHONY: common-uefi-x86-64
--- a/1
+++ b/1
@ -8,6 +8,7 @@ test -z "$srcdir" && srcdir=.
 cd "$srcdir"

 [ -d freestanding_headers ] || git clone https://github.com/mintsuki/freestanding_headers.git
+[ -d libgcc-blobs-i386 ] || git clone https://github.com/mintsuki/libgcc-blobs-i386.git
 [ -d limine-efi ] || git clone https://github.com/limine-bootloader/limine-efi.git

 automake_libdir="$(automake --print-libdir)"
--- a/common/GNUmakefile
+++ b/common/GNUmakefile
@ -224,7 +224,7 @@ $(call MKESCAPE,$(BUILDDIR))/linker_stage2only.ld: linker_bios.ld.in
 	mkdir -p '$(call SHESCAPE,$(BUILDDIR))'
 	$(LIMINE_CC) -x c -E -P -undef -DLINKER_STAGE2ONLY linker_bios.ld.in -o '$(call SHESCAPE,$(BUILDDIR))/linker_stage2only.ld'

-$(call MKESCAPE,$(BUILDDIR))/limine_stage2only.elf: $(OBJ)
+$(call MKESCAPE,$(BUILDDIR))/limine_stage2only.elf: $(OBJ) ../libgcc-blobs-i386/*.o
 	$(MAKE) '$(call SHESCAPE,$(BUILDDIR))/linker_stage2only.ld'
 	$(LIMINE_LD) '$(call OBJESCAPE,$^)' $(LIMINE_LDFLAGS) $(INTERNAL_LDFLAGS) -T'$(call SHESCAPE,$(BUILDDIR))/linker_stage2only.ld' -o '$(call SHESCAPE,$@)' || \
 		( echo "This error may mean that stage 2 was trying to use stage 3 symbols before loading stage 3" && \
@ -234,7 +234,7 @@ $(call MKESCAPE,$(BUILDDIR))/linker_nomap.ld: linker_bios.ld.in
 	mkdir -p '$(call SHESCAPE,$(BUILDDIR))'
 	$(LIMINE_CC) -x c -E -P -undef -DLINKER_NOMAP linker_bios.ld.in -o '$(call SHESCAPE,$(BUILDDIR))/linker_nomap.ld'

-$(call MKESCAPE,$(BUILDDIR))/limine_nomap.elf: $(OBJ) $(call MKESCAPE,$(BUILDDIR))/tinf/tinfgzip.o $(call MKESCAPE,$(BUILDDIR))/tinf/tinflate.o $(call MKESCAPE,$(BUILDDIR))/font.o $(call MKESCAPE,$(BUILDDIR))/sys/smp_trampoline.o $(call MKESCAPE,$(BUILDDIR))/stage2.map.o
+$(call MKESCAPE,$(BUILDDIR))/limine_nomap.elf: $(OBJ) ../libgcc-blobs-i386/*.o $(call MKESCAPE,$(BUILDDIR))/tinf/tinfgzip.o $(call MKESCAPE,$(BUILDDIR))/tinf/tinflate.o $(call MKESCAPE,$(BUILDDIR))/font.o $(call MKESCAPE,$(BUILDDIR))/sys/smp_trampoline.o $(call MKESCAPE,$(BUILDDIR))/stage2.map.o
 	$(MAKE) '$(call SHESCAPE,$(BUILDDIR))/linker_nomap.ld'
 	$(LIMINE_LD) '$(call OBJESCAPE,$^)' $(LIMINE_LDFLAGS) $(INTERNAL_LDFLAGS) -T'$(call SHESCAPE,$(BUILDDIR))/linker_nomap.ld' -o '$(call SHESCAPE,$@)'
 	$(LIMINE_OBJCOPY) -O binary --only-section=.note.gnu.build-id '$(call SHESCAPE,$@)' '$(call SHESCAPE,$(BUILDDIR))/build-id.s2.bin'
@ -249,7 +249,7 @@ $(call MKESCAPE,$(BUILDDIR))/linker.ld: linker_bios.ld.in
 	mkdir -p '$(call SHESCAPE,$(BUILDDIR))'
 	$(LIMINE_CC) -x c -E -P -undef linker_bios.ld.in -o '$(call SHESCAPE,$(BUILDDIR))/linker.ld'

-$(call MKESCAPE,$(BUILDDIR))/limine.elf: $(OBJ) $(call MKESCAPE,$(BUILDDIR))/tinf/tinfgzip.o $(call MKESCAPE,$(BUILDDIR))/tinf/tinflate.o $(call MKESCAPE,$(BUILDDIR))/font.o $(call MKESCAPE,$(BUILDDIR))/sys/smp_trampoline.o $(call MKESCAPE,$(BUILDDIR))/stage2.map.o $(call MKESCAPE,$(BUILDDIR))/full.map.o
+$(call MKESCAPE,$(BUILDDIR))/limine.elf: $(OBJ) ../libgcc-blobs-i386/*.o $(call MKESCAPE,$(BUILDDIR))/tinf/tinfgzip.o $(call MKESCAPE,$(BUILDDIR))/tinf/tinflate.o $(call MKESCAPE,$(BUILDDIR))/font.o $(call MKESCAPE,$(BUILDDIR))/sys/smp_trampoline.o $(call MKESCAPE,$(BUILDDIR))/stage2.map.o $(call MKESCAPE,$(BUILDDIR))/full.map.o
 	$(MAKE) '$(call SHESCAPE,$(BUILDDIR))/linker.ld'
 	$(LIMINE_LD) '$(call OBJESCAPE,$^)' $(LIMINE_LDFLAGS) $(INTERNAL_LDFLAGS) -T'$(call SHESCAPE,$(BUILDDIR))/linker.ld' -o '$(call SHESCAPE,$@)'
 	$(LIMINE_OBJCOPY) -O binary --only-section=.note.gnu.build-id '$(call SHESCAPE,$@)' '$(call SHESCAPE,$(BUILDDIR))/build-id.s2.bin'
@ -346,7 +346,7 @@ $(call MKESCAPE,$(BUILDDIR))/linker_nomap.ld: linker_uefi_ia32.ld.in
 	mkdir -p '$(call SHESCAPE,$(BUILDDIR))'
 	$(LIMINE_CC) -x c -E -P -undef -DLINKER_NOMAP linker_uefi_ia32.ld.in -o '$(call SHESCAPE,$(BUILDDIR))/linker_nomap.ld'

-$(call MKESCAPE,$(BUILDDIR))/limine_nomap.elf: $(call MKESCAPE,$(BUILDDIR))/limine-efi/gnuefi/crt0-efi-ia32.o $(call MKESCAPE,$(BUILDDIR))/limine-efi/gnuefi/libgnuefi.a $(OBJ) $(call MKESCAPE,$(BUILDDIR))/tinf/tinfgzip.o $(call MKESCAPE,$(BUILDDIR))/tinf/tinflate.o $(call MKESCAPE,$(BUILDDIR))/font.o $(call MKESCAPE,$(BUILDDIR))/sys/smp_trampoline.o
+$(call MKESCAPE,$(BUILDDIR))/limine_nomap.elf: $(call MKESCAPE,$(BUILDDIR))/limine-efi/gnuefi/crt0-efi-ia32.o $(call MKESCAPE,$(BUILDDIR))/limine-efi/gnuefi/libgnuefi.a $(OBJ) ../libgcc-blobs-i386/*.o $(call MKESCAPE,$(BUILDDIR))/tinf/tinfgzip.o $(call MKESCAPE,$(BUILDDIR))/tinf/tinflate.o $(call MKESCAPE,$(BUILDDIR))/font.o $(call MKESCAPE,$(BUILDDIR))/sys/smp_trampoline.o
 	$(MAKE) '$(call SHESCAPE,$(BUILDDIR))/linker_nomap.ld'
 	$(LIMINE_LD) \
 		-T'$(call SHESCAPE,$(BUILDDIR))/linker_nomap.ld' \
@ -356,7 +356,7 @@ $(call MKESCAPE,$(BUILDDIR))/linker.ld: linker_uefi_ia32.ld.in
 	mkdir -p '$(call SHESCAPE,$(BUILDDIR))'
 	$(LIMINE_CC) -x c -E -P -undef linker_uefi_ia32.ld.in -o '$(call SHESCAPE,$(BUILDDIR))/linker.ld'

-$(call MKESCAPE,$(BUILDDIR))/limine.elf: $(call MKESCAPE,$(BUILDDIR))/limine-efi/gnuefi/crt0-efi-ia32.o $(call MKESCAPE,$(BUILDDIR))/limine-efi/gnuefi/libgnuefi.a $(OBJ) $(call MKESCAPE,$(BUILDDIR))/tinf/tinfgzip.o $(call MKESCAPE,$(BUILDDIR))/tinf/tinflate.o $(call MKESCAPE,$(BUILDDIR))/font.o $(call MKESCAPE,$(BUILDDIR))/sys/smp_trampoline.o $(call MKESCAPE,$(BUILDDIR))/full.map.o
+$(call MKESCAPE,$(BUILDDIR))/limine.elf: $(call MKESCAPE,$(BUILDDIR))/limine-efi/gnuefi/crt0-efi-ia32.o $(call MKESCAPE,$(BUILDDIR))/limine-efi/gnuefi/libgnuefi.a $(OBJ) ../libgcc-blobs-i386/*.o $(call MKESCAPE,$(BUILDDIR))/tinf/tinfgzip.o $(call MKESCAPE,$(BUILDDIR))/tinf/tinflate.o $(call MKESCAPE,$(BUILDDIR))/font.o $(call MKESCAPE,$(BUILDDIR))/sys/smp_trampoline.o $(call MKESCAPE,$(BUILDDIR))/full.map.o
 	$(MAKE) '$(call SHESCAPE,$(BUILDDIR))/linker.ld'
 	$(LIMINE_LD) \
 		-T'$(call SHESCAPE,$(BUILDDIR))/linker.ld' \
--- a/common/lib/libgcc.s2.asm_ia32
+++ b/common/lib/libgcc.s2.asm_ia32
@ -1,63 +0,0 @@
-section .text
-
-global __udivdi3
-__udivdi3:
-    mov eax, dword [esp+4]
-    mov edx, dword [esp+8]
-    div dword [esp+12]
-    xor edx, edx
-    ret
-
-global __divdi3
-__divdi3:
-    mov eax, dword [esp+4]
-    mov edx, dword [esp+8]
-    idiv dword [esp+12]
-    xor edx, edx
-    ret
-
-global __umoddi3
-__umoddi3:
-    mov eax, dword [esp+4]
-    mov edx, dword [esp+8]
-    div dword [esp+12]
-    mov eax, edx
-    xor edx, edx
-    ret
-
-global __moddi3
-__moddi3:
-    mov eax, dword [esp+4]
-    mov edx, dword [esp+8]
-    idiv dword [esp+12]
-    mov eax, edx
-    xor edx, edx
-    ret
-
-global __udivmoddi4
-__udivmoddi4:
-    mov eax, dword [esp+4]
-    mov edx, dword [esp+8]
-    div dword [esp+12]
-    mov ecx, dword [esp+20]
-    test ecx, ecx
-    jz .done
-    mov dword [ecx], edx
-    mov dword [ecx+4], 0
-  .done:
-    xor edx, edx
-    ret
-
-global __divmoddi4
-__divmoddi4:
-    mov eax, dword [esp+4]
-    mov edx, dword [esp+8]
-    idiv dword [esp+12]
-    mov ecx, dword [esp+20]
-    test ecx, ecx
-    jz .done
-    mov dword [ecx], edx
-    mov dword [ecx+4], 0
-  .done:
-    xor edx, edx
-    ret
--- a/common/linker_bios.ld.in
+++ b/common/linker_bios.ld.in
@ -18,6 +18,7 @@ SECTIONS
        *(.entry)
        *(.realmode)
        *.s2.o(.text .text.*)
+        *libgcc*.o(.text .text.*)
    } :text_s2

    .data.stage2 : {
@ -27,8 +28,10 @@ SECTIONS
        *.s2.o(.no_unwind)
        s2_data_begin = .;
        *.s2.o(.data .data.*)
+        *libgcc*.o(.data .data.*)
        s2_data_end = .;
        *.s2.o(.rodata .rodata.*)
+        *libgcc*.o(.rodata .rodata.*)
 #ifdef LINKER_STAGE2ONLY
        /* stage2 missing symbols overrides */
        stage2_map = .;