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Some GCC flags improvements (#1903)
* Some GCC flags improvements * Move -fno-reorder-blocks -fno-zero-initialized-in-bss to assets only * Add -fno-PIC since some gcc versions use -fPIC as default * Enable builtin functions on gcc, with appropriate changes to missing_gcc_functions.c and ultra64/libc.h * Move -fno-merge-constants -mno-explicit-relocs -mno-split-addresses to overlays only as they are only needed there for reloc reasons * Remove unneeded casts in missing_gcc_functions.c * Change gcc assets flags handling
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1b60dcf6dd
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3 changed files with 40 additions and 10 deletions
7
Makefile
7
Makefile
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@ -154,7 +154,7 @@ endif
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ASFLAGS := -march=vr4300 -32 -no-pad-sections -Iinclude
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ifeq ($(COMPILER),gcc)
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CFLAGS += -G 0 -nostdinc $(INC) -march=vr4300 -mfix4300 -mabi=32 -mno-abicalls -mdivide-breaks -fno-zero-initialized-in-bss -fno-toplevel-reorder -ffreestanding -fno-common -fno-merge-constants -mno-explicit-relocs -mno-split-addresses $(CHECK_WARNINGS) -funsigned-char
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CFLAGS += -G 0 -nostdinc $(INC) -march=vr4300 -mfix4300 -mabi=32 -mno-abicalls -mdivide-breaks -fno-PIC -fno-common -ffreestanding -fbuiltin -fno-builtin-sinf -fno-builtin-cosf $(CHECK_WARNINGS) -funsigned-char
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MIPS_VERSION := -mips3
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else
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# Suppress warnings for wrong number of macro arguments (to fake variadic
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@ -314,8 +314,11 @@ $(BUILD_DIR)/src/overlays/%.o: CC := $(PYTHON) tools/asm_processor/build.py $(CC
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$(BUILD_DIR)/assets/%.o: CC := $(PYTHON) tools/asm_processor/build.py $(CC) -- $(AS) $(ASFLAGS) --
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else
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# Note that if adding additional assets directories for modding reasons these flags must also be used there
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$(BUILD_DIR)/assets/%.o: CFLAGS += -fno-zero-initialized-in-bss -fno-toplevel-reorder
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$(BUILD_DIR)/src/%.o: CFLAGS += -fexec-charset=euc-jp
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$(BUILD_DIR)/src/libultra/libc/ll.o: OPTFLAGS := -Ofast
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$(BUILD_DIR)/src/%.o: CC := $(CC) -fexec-charset=euc-jp
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$(BUILD_DIR)/src/overlays/%.o: CFLAGS += -fno-merge-constants -mno-explicit-relocs -mno-split-addresses
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endif
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#### Main Targets ###
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@ -5,8 +5,14 @@
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void osSyncPrintf(const char* fmt, ...);
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#ifdef __GNUC__
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void bzero(void* __s, unsigned int __n);
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int bcmp(const void* __sl, const void* __s2, unsigned int __n);
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void bcopy(const void* __src, void* __dest, unsigned int __n);
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#else
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void bzero(void* __s, int __n);
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int bcmp(const void* __sl, const void* __s2, int __n);
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void bcopy(const void* __src, void* __dest, int __n);
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#endif
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#endif
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@ -10,10 +10,10 @@
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// Self-hosted libc memory functions, gcc assumes these exist even in a freestanding
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// environment and there is no way to tell it otherwise.
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int memcmp(void* s1, const void* s2, size_t n) {
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u8* m1 = (u8*)s1;
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u8* m2 = (u8*)s2;
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u32 i;
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int memcmp(const void* s1, const void* s2, size_t n) {
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const u8* m1 = s1;
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const u8* m2 = s2;
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size_t i;
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for (i = 0; i < n; i++) {
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if (m1[i] < m2[i]) {
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@ -26,17 +26,38 @@ int memcmp(void* s1, const void* s2, size_t n) {
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return 0;
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}
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void* memset(void* str, s32 c, size_t n) {
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u8* m1 = (u8*)str;
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u32 i;
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void* memset(void* str, int c, size_t n) {
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u8* m = str;
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size_t i;
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for (i = 0; i < n; i++) {
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m1[i] = c;
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m[i] = c;
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}
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return str;
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}
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void* memmove(void* dest, const void* src, size_t len) {
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u8* d = dest;
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const u8* s = src;
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if (d == s) {
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return dest;
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}
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if (d < s) {
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while (len--) {
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*d++ = *s++;
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}
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} else {
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d += len - 1;
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s += len - 1;
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while (len--) {
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*d-- = *s--;
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}
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}
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return dest;
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}
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// Conversions involving 64-bit integer types required by the O32 MIPS ABI.
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// f32 -> u64, negative values become 0
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