[build] Allow for 32-bit and 64-bit versions of util/zbin

Parsing ELF data is simpler if we don't have to build a single binary
to handle both 32-bit and 64-bit ELF formats.

Allow for separate 32-bit and 64-bit binaries built from util/zbin.c
(as is already done for util/elf2efi.c).

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/Makefile

@@ -45,7 +45,8 @@ SORTOBJDUMP	:= ./util/sortobjdump.pl
 PADIMG		:= ./util/padimg.pl
 LICENCE		:= ./util/licence.pl
 NRV2B		:= ./util/nrv2b
-ZBIN		:= ./util/zbin
+ZBIN32		:= ./util/zbin32
+ZBIN64		:= ./util/zbin64
 ELF2EFI32	:= ./util/elf2efi32
 ELF2EFI64	:= ./util/elf2efi64
 EFIROM		:= ./util/efirom

src/Makefile.housekeeping

@@ -1449,10 +1449,15 @@ endif # defined(BIN)
 
 ZBIN_LDFLAGS := -llzma
 
-$(ZBIN) : util/zbin.c $(MAKEDEPS)
+$(ZBIN32) : util/zbin.c $(MAKEDEPS)
 	$(QM)$(ECHO) "  [HOSTCC] $@"
-	$(Q)$(HOST_CC) $(HOST_CFLAGS) $< $(ZBIN_LDFLAGS) -o $@
-CLEANUP += $(ZBIN)
+	$(Q)$(HOST_CC) $(HOST_CFLAGS) $< $(ZBIN_LDFLAGS) -DELF32 -o $@
+CLEANUP += $(ZBIN32)
+
+$(ZBIN64) : util/zbin.c $(MAKEDEPS)
+	$(QM)$(ECHO) "  [HOSTCC] $@"
+	$(Q)$(HOST_CC) $(HOST_CFLAGS) $< $(ZBIN_LDFLAGS) -DELF64 -o $@
+CLEANUP += $(ZBIN64)
 
 ###############################################################################
 #

src/arch/arm32/Makefile

@@ -1,3 +1,7 @@
+# Specify compressor
+#
+ZBIN		= $(ZBIN32)
+
 # ARM32-specific directories containing source files
 #
 SRCDIRS		+= arch/arm32/core

src/arch/arm64/Makefile

@@ -1,3 +1,7 @@
+# Specify compressor
+#
+ZBIN		= $(ZBIN64)
+
 # ARM64-specific directories containing source files
 #
 SRCDIRS		+= arch/arm64/core

src/arch/i386/Makefile

@@ -1,3 +1,7 @@
+# Specify compressor
+#
+ZBIN		= $(ZBIN32)
+
 # Force i386-only instructions
 #
 CFLAGS		+= -march=i386

src/arch/loong64/Makefile

@@ -1,3 +1,7 @@
+# Specify compressor
+#
+ZBIN		= $(ZBIN64)
+
 # Assembler section type character
 #
 ASM_TCHAR	:= @

src/arch/riscv32/Makefile

@@ -1,3 +1,7 @@
+# Specify compressor
+#
+ZBIN		= $(ZBIN32)
+
 # RISCV32-specific directories containing source files
 #
 SRCDIRS		+= arch/riscv32/core

src/arch/riscv64/Makefile

@@ -1,3 +1,7 @@
+# Specify compressor
+#
+ZBIN		= $(ZBIN64)
+
 # RISCV64-specific directories containing source files
 #
 SRCDIRS		+= arch/riscv64/core

src/arch/x86_64/Makefile

@@ -1,3 +1,7 @@
+# Specify compressor
+#
+ZBIN		= $(ZBIN64)
+
 # Code size reduction.
 #
 CFLAGS		+= -fstrength-reduce -fomit-frame-pointer

src/util/.gitignore

@@ -1,5 +1,6 @@
 nrv2b
-zbin
+zbin32
+zbin64
 hijack
 prototester
 elf2efi32