From e363477b6704f2bae5139d46841c0c0d12e81ee7 Mon Sep 17 00:00:00 2001
From: Michael Brown <mbrown@fensystems.co.uk>
Date: Mon, 27 Nov 2023 16:02:45 +0000
Subject: [PATCH] WIP - HACKS

---
 src/Makefile   | 54 +++++++++++++++++++++++++++++++++++---------------
 src/script.lds |  2 ++
 2 files changed, 40 insertions(+), 16 deletions(-)

diff --git a/src/Makefile b/src/Makefile
index c7ab421..a9b0e6e 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -2,24 +2,30 @@ VERSION := v2.7.6
 
 SBAT_GENERATION := 1
 
-OBJECTS := prefix.o startup.o callback.o main.o vsprintf.o string.o peloader.o
-OBJECTS += int13.o vdisk.o cpio.o stdio.o lznt1.o xca.o die.o efi.o efimain.o
+OBJECTS := vsprintf.o string.o peloader.o
+OBJECTS += vdisk.o cpio.o stdio.o lznt1.o xca.o die.o efi.o efimain.o
 OBJECTS += efiguid.o efifile.o efipath.o efiboot.o efiblock.o cmdline.o
 OBJECTS += wimpatch.o huffman.o lzx.o wim.o wimfile.o pause.o sha1.o cookie.o
-OBJECTS += paging.o memmap.o
 
-OBJECTS_i386 := $(patsubst %.o,%.i386.o,$(OBJECTS))
-OBJECTS_x86_64 := $(patsubst %.o,%.x86_64.o,$(OBJECTS))
-OBJECTS_i386_x86_64 := $(patsubst %.o,%.i386.x86_64.o,$(OBJECTS))
+OBJECTS_x86 := $(OBJECTS)
+OBJECTS_x86 += prefix.o startup.o callback.o main.o int13.o paging.o memmap.o
+
+OBJECTS_i386 := $(patsubst %.o,%.i386.o,$(OBJECTS_x86))
+OBJECTS_x86_64 := $(patsubst %.o,%.x86_64.o,$(OBJECTS_x86))
+OBJECTS_i386_x86_64 := $(patsubst %.o,%.i386.x86_64.o,$(OBJECTS_x86))
+
+OBJECTS_arm64 := $(OBJECTS)
 
 HEADERS := $(wildcard *.h)
 
 HOST_CC		:= $(CC)
-AS		:= $(AS)
+CC		:= $(CROSS)gcc
+AS		:= $(CROSS)$(AS)
+LD		:= $(CROSS)$(LD)
 ECHO		:= echo
-OBJCOPY 	:= objcopy
-AR		:= ar
-RANLIB		:= ranlib
+OBJCOPY 	:= $(CROSS)objcopy
+AR		:= $(CROSS)ar
+RANLIB		:= $(CROSS)ranlib
 CP		:= cp
 RM		:= rm
 GCAB		:= gcab
@@ -61,7 +67,7 @@ MS_ABI_TEST = $(ECHO) '$(MS_ABI_TEST_CODE)' | \
 	      $(CC) -m64 -mno-accumulate-outgoing-args -x c -c - -o /dev/null \
 		    >/dev/null 2>&1
 MS_ABI_FLAGS := $(shell $(MS_ABI_TEST) || $(ECHO) '-maccumulate-outgoing-args')
-WORKAROUND_CFLAGS += $(MS_ABI_FLAGS)
+#WORKAROUND_CFLAGS += $(MS_ABI_FLAGS)
 
 # Inhibit warnings from taking address of packed struct members
 WNAPM_TEST = $(CC) -Wno-address-of-packed-member -x c -c /dev/null \
@@ -100,9 +106,9 @@ wimboot : wimboot.x86_64 Makefile
 	$(CP) $< $@
 	$(CP) $@ ../$@
 
-wimboot.%.elf : prefix.%.o lib.%.a script.lds Makefile
-	$(LD) -m elf_$* -T script.lds -o $@ -q -Map wimboot.$*.map \
-		prefix.$*.o lib.$*.a
+wimboot.%.elf : lib.%.a script.lds Makefile
+	#	$(LD) -m elf_$* -T script.lds -o $@ -q -Map wimboot.$*.map lib.$*.a
+	$(LD) -T script.lds -o $@ -q -Map wimboot.$*.map lib.$*.a
 
 wimboot.i386.unsigned : wimboot.i386.elf elf2efi32 Makefile
 	$(OBJCOPY) -Obinary $< $@
@@ -112,6 +118,10 @@ wimboot.x86_64.unsigned : wimboot.x86_64.elf elf2efi64 Makefile
 	$(OBJCOPY) -Obinary $< $@
 	./elf2efi64 --hybrid $< $@
 
+wimboot.arm64.unsigned : wimboot.arm64.elf elf2efi64 Makefile
+	$(OBJCOPY) -Obinary $< $@
+	./elf2efi64 --hybrid $< $@
+
 wimboot.%.unsigned.hash : wimboot.%.unsigned Makefile
 	$(PESIGN) -h -i $< | $(XARGS) -n 1 $(ECHO) | $(GREP) -x '[0-9a-f]*' > $@
 
@@ -174,15 +184,27 @@ lib.x86_64.a : $(OBJECTS_x86_64) $(OBJECTS_i386_x86_64) Makefile
 	$(AR) r $@ $(OBJECTS_x86_64) $(OBJECTS_i386_x86_64)
 	$(RANLIB) $@
 
+###############################################################################
+#
+# arm64 objects
+
+%.arm64.o : %.c $(HEADERS) Makefile
+	$(CC) $(CFLAGS) $(CFLAGS_arm64) -c $< -o $@
+
+lib.arm64.a : $(OBJECTS_arm64) Makefile
+	$(RM) -f $@
+	$(AR) r $@ $(OBJECTS_arm64)
+	$(RANLIB) $@
+
 ###############################################################################
 #
 # EFI relocator
 
 elf2efi32 : elf2efi.c Makefile
-	$(CC) $(HOST_CFLAGS) -idirafter . -DEFI_TARGET32 $< -o $@
+	$(HOST_CC) $(HOST_CFLAGS) -idirafter . -DEFI_TARGET32 $< -o $@
 
 elf2efi64 : elf2efi.c Makefile
-	$(CC) $(HOST_CFLAGS) -idirafter . -DEFI_TARGET64 $< -o $@
+	$(HOST_CC) $(HOST_CFLAGS) -idirafter . -DEFI_TARGET64 $< -o $@
 
 ###############################################################################
 #
diff --git a/src/script.lds b/src/script.lds
index 9dc8039..4c30fc2 100644
--- a/src/script.lds
+++ b/src/script.lds
@@ -24,6 +24,8 @@ SECTIONS {
 		_prefix = .;
 		*(.prefix)
 		*(.prefix.*)
+		BYTE(1)
+		. = 0x400;
 		_eprefix = .;
 	}
 	_prefix_len = ABSOLUTE ( _eprefix ) - ABSOLUTE ( _prefix );