WIP - clang

src/Makefile

@@ -49,7 +49,12 @@ CCDEFS		:= $(shell $(CC) -E -x c -c /dev/null -dM | $(CUT) -d" " -f2)
 
 # Detect compiler type
 #
-ifeq ($(filter __GNUC__,$(CCDEFS)),__GNUC__)
+ifeq ($(filter __clang__,$(CCDEFS)),__clang__)
+CC_i386		?= $(CC) -target i386
+CC_x86_64	?= $(CC) -target x86_64
+CC_arm64	?= $(CC) -target aarch64
+CFLAGS		+= -Wno-unused-command-line-argument
+else ifeq ($(filter __GNUC__,$(CCDEFS)),__GNUC__)
 CC		:= gcc
 endif
 
@@ -102,6 +107,7 @@ ifneq ($(DEBUG),)
 CFLAGS		+= -DDEBUG=$(DEBUG)
 endif
 CFLAGS		+= $(EXTRA_CFLAGS)
+LDFLAGS		+= --no-relax
 
 # Build flags for i386 target
 #
@@ -153,6 +159,10 @@ CFLAGS_WNAB	= $(call CFLAGS_TEST,$(1),-Wno-array-bounds)
 #
 CFLAGS_NLTO	= $(call CFLAGS_TEST,$(1),-fno-lto)
 
+# Inhibit address-significance table
+#
+CFLAGS_NAS	= $(call CFLAGS_TEST,$(1),-fno-addrsig)
+
 # Add -maccumulate-outgoing-args if required
 #
 MS_ABI_TEST_CODE := extern void __attribute__ (( ms_abi )) ms_abi(); \
@@ -167,7 +177,7 @@ endef
 # Conditional build flags
 #
 CFLAGS_COND	= $(CFLAGS_SPG) $(CFLAGS_CFI) $(CFLAGS_WNAPM) $(CFLAGS_WNAB) \
-		  $(CFLAGS_NLTO) $(CFLAGS_MS_ABI)
+		  $(CFLAGS_NLTO) $(CFLAGS_NAS) $(CFLAGS_MS_ABI)
 CFLAGS_i386	+= $(call CFLAGS_COND,i386)
 CFLAGS_x86_64	+= $(call CFLAGS_COND,x86_64)
 CFLAGS_arm64	+= $(call CFLAGS_COND,arm64)

src/byteswap.h

@@ -85,7 +85,7 @@ __bswap_64s ( uint64_t *x ) {
 
 static inline __attribute__ (( always_inline, const )) uint16_t
 __bswap_variable_16 ( uint16_t x ) {
-	__asm__ ( "rev16 %0, %1" : "=r" ( x ) : "r" ( x ) );
+	__asm__ ( "rev16 %x0, %x1" : "=r" ( x ) : "r" ( x ) );
 	return x;
 }
 
@@ -96,7 +96,7 @@ __bswap_16s ( uint16_t *x ) {
 
 static inline __attribute__ (( always_inline, const )) uint32_t
 __bswap_variable_32 ( uint32_t x ) {
-	__asm__ ( "rev32 %0, %1" : "=r" ( x ) : "r" ( x ) );
+	__asm__ ( "rev32 %x0, %x1" : "=r" ( x ) : "r" ( x ) );
 	return x;
 }
 

src/elf2efi.c

@@ -828,6 +828,8 @@ static void process_reloc ( struct elf_file *elf, const Elf_Shdr *shdr,
 		case ELF_MREL ( EM_ARM, R_ARM_V4BX ):
 		case ELF_MREL ( EM_X86_64, R_X86_64_PC32 ) :
 		case ELF_MREL ( EM_X86_64, R_X86_64_PLT32 ) :
+		case ELF_MREL ( EM_X86_64, R_X86_64_GOTPCRELX ) :
+		case ELF_MREL ( EM_X86_64, R_X86_64_REX_GOTPCRELX ) :
 		case ELF_MREL ( EM_AARCH64, R_AARCH64_CALL26 ) :
 		case ELF_MREL ( EM_AARCH64, R_AARCH64_JUMP26 ) :
 		case ELF_MREL ( EM_AARCH64, R_AARCH64_ADR_PREL_LO21 ) :
@@ -837,6 +839,7 @@ static void process_reloc ( struct elf_file *elf, const Elf_Shdr *shdr,
 		case ELF_MREL ( EM_AARCH64, R_AARCH64_LDST16_ABS_LO12_NC ) :
 		case ELF_MREL ( EM_AARCH64, R_AARCH64_LDST32_ABS_LO12_NC ) :
 		case ELF_MREL ( EM_AARCH64, R_AARCH64_LDST64_ABS_LO12_NC ) :
+		case ELF_MREL ( EM_AARCH64, R_AARCH64_LDST128_ABS_LO12_NC ) :
 		case ELF_MREL ( EM_LOONGARCH, R_LARCH_B26):
 		case ELF_MREL ( EM_LOONGARCH, R_LARCH_PCALA_HI20 ):
 		case ELF_MREL ( EM_LOONGARCH, R_LARCH_PCALA_LO12 ):

src/script.lds

@@ -58,6 +58,8 @@ SECTIONS {
 		*(.rodata.*)
 		*(.data)
 		*(.data.*)
+		*(.got)
+		*(.got.*)
 		. = ALIGN ( alignment );
 		_edata = .;
 	}