l4re-base-25.08.0

src/l4/pkg/gnu-efi/examples/Makefile

@@ -0,0 +1,32 @@
+PKGDIR		?= ..
+L4DIR		?= $(PKGDIR)/../..
+
+EXAMPLE		= efi_hello
+TARGET          = $(EXAMPLE).elfpic
+INSTALL_TARGET  = $(EXAMPLE).efi $(TARGET)
+DEL_ON_CLEAN    = $(INSTALL_TARGET)
+LDSCRIPT        = $(OBJ_BASE)/lib/$(subst -,/,$(SYSTEM))/elf_$(EFI_ARCH)_efi.lds
+SYSTEMS         = x86-plain amd64-plain arm64-plain
+MODE            = sigma0
+SRC_CC          = main.cc
+REQUIRES_LIBS   = gnu-efi
+
+include $(L4DIR)/mk/prog.mk
+
+$(EXAMPLE).efi: $(EXAMPLE).elfpic
+	$(VERBOSE)$(OBJCOPY) -j .text -j .sdata -j .data \
+	           -j .dynamic -j .dynsym -j .rel \
+	           -j .rela -j .reloc --subsystem=efi-app $< $@
+
+EFI_ARCH-amd64  = x86_64
+EFI_ARCH-x86    = ia32
+EFI_ARCH-arm64  = aarch64
+EFI_ARCH        = $(EFI_ARCH-$(ARCH))
+
+OBJ           += $(OBJ_BASE)/lib/$(SYSTEM)/crt0-efi-$(EFI_ARCH).o
+LDFLAGS_all_sigma0 =
+CPPFLAGS       += -fshort-wchar -fPIC \
+                  -I$(OBJ_BASE)/include/contrib/gnu-efi/$(EFI_ARCH)
+LDFLAGS         = -nocrt $(if $(filter lld,$(BID_LD_TYPE)),-T,-dT) $(LDSCRIPT) \
+		  -L$(OBJ_BASE)/lib/$(subst -,/,$(SYSTEM)) -nostdlib -shared \
+		  -Bsymbolic --defsym=ImageBase=0 --defsym=EFI_SUBSYSTEM=0xa

src/l4/pkg/gnu-efi/examples/main.cc

@@ -0,0 +1,20 @@
+#include <stdint.h>
+extern "C"
+{
+#include <efi.h>
+#include <efilib.h>
+}
+
+extern "C" EFI_STATUS efi_main(EFI_HANDLE image, EFI_SYSTEM_TABLE *systab);
+EFI_STATUS
+efi_main(EFI_HANDLE image, EFI_SYSTEM_TABLE *systab)
+{
+  EFI_STATUS efi_status = EFI_SUCCESS;
+
+  InitializeLib(image, systab);
+
+  CHAR16 s[] = L"Hello World from L4\n";
+  Print(s);
+
+  return efi_status;
+}