misc: adapt to gcc 14.2

Makefile

@@ -16,7 +16,7 @@ include ../phoenix-rtos-build/Makefile.common
 
 LDGEN ?= $(CC)
 
-CFLAGS += -I.
+CFLAGS += -I. -ffreestanding
 CPPFLAGS += -DVERSION=\"$(VERSION)\"
 
 OBJS :=

_startc.c

@@ -33,29 +33,31 @@ void _startc(int argc, char **argv, char **env)
 	size_t i, size;
 
 	/* Load .fastram.text, .data and .rodata sections */
-	if (__ramtext_start != __ramtext_load) {
+	if (&__ramtext_start[0] != &__ramtext_load[0]) {
 		/* hal_memcpy may reside in fastram. */
-		for (i = 0; i <= __ramtext_end - __ramtext_start; i++) {
+		for (i = 0; i <= (__ramtext_end - __ramtext_start); i++) {
 			__ramtext_start[i] = __ramtext_load[i];
 		}
 	}
 
-	if (__data_start != __data_load)
+	if (&__data_start[0] != &__data_load[0]) {
 		hal_memcpy(__data_start, __data_load, __data_end - __data_start);
-
-	if (__rodata_start != __rodata_load)
+	}
+	if (&__rodata_start[0] != &__rodata_load[0]) {
 		hal_memcpy(__rodata_start, __rodata_load, __rodata_end - __rodata_start);
-
+	}
 	/* Clear the .bss section */
 	hal_memset(__bss_start, 0, __bss_end - __bss_start);
 
 	size = __init_array_end - __init_array_start;
-	for (i = 0; i < size; i++)
+	for (i = 0; i < size; i++) {
 		(*__init_array_start[i])();
+	}
 
 	main();
 
 	size = __fini_array_end - __fini_array_start;
-	for (i = size; i > 0; i--)
+	for (i = size; i > 0; i--) {
 		(*__fini_array_start[i - 1])();
+	}
 }

hal/ia32/acpi.c

@@ -135,7 +135,13 @@ static rsdp_t *_hal_acpiLookForRsdp(hal_syspage_t *hs, void *start, void *end)
 static rsdp_t *_hal_acpiFindRsdp(hal_syspage_t *hs)
 {
 	/* Search EBDA */
+
+	/* FIXME: pragmas are needed as a result of a bug in GCC -Warray-bounds */
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Warray-bounds"
 	unsigned int ebda = ((*(u16 *)0x40eu) << 4) & ~(SIZE_PAGE - 1);
+#pragma GCC diagnostic pop
+
 	rsdp_t *result;
 	if ((ebda < 0x00080000u) || (ebda > 0x0009ffffu)) {
 		ebda = 0x00080000u;

riscv-sbi/Makefile

@@ -25,7 +25,7 @@ endif
 
 LDGEN ?= $(CC)
 
-CFLAGS += -I. -Iinclude
+CFLAGS += -I. -Iinclude -ffreestanding
 CPPFLAGS += -DPAYLOAD_PATH=\"$(PAYLOAD_PATH)\"
 
 ifneq ($(FDT_PATH),)