GCC Compiler Support (#1791)

* GCC Compiler Support

* Update mkldscript

4 files changed, 421 insertions, 207 deletions

diff --git a/Makefile b/Makefile
index a153953d0..cf6c7a229 100644
--- a/Makefile
+++ b/Makefile
@@ -40,6 +40,8 @@ COMPARE ?= 1
 NON_MATCHING ?= 0
 # If ORIG_COMPILER is 1, compile with QEMU_IRIX and the original compiler
 ORIG_COMPILER ?= 0
+# If COMPILER is "gcc", compile with GCC instead of IDO.
+COMPILER ?= ido
 # if WERROR is 1, pass -Werror to CC_CHECK, so warnings would be treated as errors
 WERROR ?= 0
 # Keep .mdebug section in build
@@ -69,9 +71,18 @@ N64_EMULATOR ?=
 # Ensure the map file being created using English localization
 export LANG := C
 
+CFLAGS :=
+CPPFLAGS :=
+
+ifeq ($(COMPILER),gcc)
+  CPPFLAGS += -DCOMPILER_GCC
+  NON_MATCHING := 1
+  RUN_CC_CHECK := 0
+endif
+
 ifneq ($(NON_MATCHING),0)
-  CFLAGS := -DNON_MATCHING
-  CPPFLAGS := -DNON_MATCHING
+  CFLAGS += -DNON_MATCHING -DAVOID_UB
+  CPPFLAGS += -DNON_MATCHING -DAVOID_UB
   COMPARE := 0
 endif
 
@@ -92,8 +103,15 @@ ifneq ($(shell type $(MIPS_BINUTILS_PREFIX)ld >/dev/null 2>/dev/null; echo $$?),
   $(error Unable to find $(MIPS_BINUTILS_PREFIX)ld. Please install or build MIPS binutils, commonly mips-linux-gnu. (or set MIPS_BINUTILS_PREFIX if your MIPS binutils install uses another prefix))
 endif
 
-CC       := tools/ido_recomp/$(DETECTED_OS)/7.1/cc
-CC_OLD   := tools/ido_recomp/$(DETECTED_OS)/5.3/cc
+# Detect compiler and set variables appropriately.
+ifeq ($(COMPILER),gcc)
+  CC       := $(MIPS_BINUTILS_PREFIX)gcc
+else ifeq ($(COMPILER),ido)
+  CC       := tools/ido_recomp/$(DETECTED_OS)/7.1/cc
+  CC_OLD   := tools/ido_recomp/$(DETECTED_OS)/5.3/cc
+else
+$(error Unsupported compiler. Please use either ido or gcc as the COMPILER variable.)
+endif
 
 # if ORIG_COMPILER is 1, check that either QEMU_IRIX is set or qemu-irix package installed
 ifeq ($(ORIG_COMPILER),1)
@@ -177,18 +195,36 @@ SFCFLAGS := --matching
 # We can't use the C preprocessor for this because it won't substitute inside string literals.
 BUILD_DIR_REPLACE := sed -e 's|$$(BUILD_DIR)|$(BUILD_DIR)|g'
 
-CFLAGS           += -G 0 -non_shared -Xcpluscomm -nostdinc -Wab,-r4300_mul
+GBI_DEFINES := -DF3DEX_GBI_2 -DF3DEX_GBI_PL -DGBI_DOWHILE
 
-WARNINGS         := -fullwarn -verbose -woff 624,649,838,712,516,513,596,564,594,807
-ASFLAGS          := -march=vr4300 -32 -G0
-GBI_DEFINES 	 := -DF3DEX_GBI_2 -DF3DEX_GBI_PL -DGBI_DOWHILE
-COMMON_DEFINES   := -D_MIPS_SZLONG=32 $(GBI_DEFINES)
-AS_DEFINES       := $(COMMON_DEFINES) -DMIPSEB -D_LANGUAGE_ASSEMBLY -D_ULTRA64
-C_DEFINES        := $(COMMON_DEFINES) -DLANGUAGE_C -D_LANGUAGE_C
-ENDIAN           := -EB
+ifeq ($(COMPILER),gcc)
+  # MIPS options
+  CFLAGS           += -G 0 -march=vr4300 -mtune=vr4300 -mfix4300 -mabi=32 -mno-abicalls -mdivide-breaks
+  # C dialect options
+  CFLAGS           += -nostdinc -fno-PIC -fno-common -ffreestanding -fbuiltin -fno-builtin-sinf -fno-builtin-cosf -funsigned-char
 
-OPTFLAGS := -O2 -g3
-MIPS_VERSION := -mips2
+  WARNINGS         := $(CC_CHECK_WARNINGS)
+  ASFLAGS          := -march=vr4300 -32 -G0
+  COMMON_DEFINES   := $(GBI_DEFINES)
+  AS_DEFINES       := $(COMMON_DEFINES) -DMIPSEB -D_LANGUAGE_ASSEMBLY -D_ULTRA64
+  C_DEFINES        := $(COMMON_DEFINES) -D_LANGUAGE_C
+  ENDIAN           :=
+
+  OPTFLAGS         := -Os -ffast-math -ftrapping-math -fno-associative-math
+  MIPS_VERSION     := -mips3
+else
+  CFLAGS           += -G 0 -non_shared -Xcpluscomm -nostdinc -Wab,-r4300_mul
+
+  WARNINGS         := -fullwarn -verbose -woff 624,649,838,712,516,513,596,564,594,807
+  ASFLAGS          := -march=vr4300 -32 -G0
+  COMMON_DEFINES   := -D_MIPS_SZLONG=32 $(GBI_DEFINES)
+  AS_DEFINES       := $(COMMON_DEFINES) -DMIPSEB -D_LANGUAGE_ASSEMBLY -D_ULTRA64
+  C_DEFINES        := $(COMMON_DEFINES) -D_LANGUAGE_C
+  ENDIAN           := -EB
+
+  OPTFLAGS         := -O2 -g3
+  MIPS_VERSION     := -mips2
+endif
 
 # Use relocations and abi fpr names in the dump
 OBJDUMP_FLAGS := --disassemble --reloc --disassemble-zeroes -Mreg-names=32
@@ -221,7 +257,12 @@ SPEC := spec
 # create asm directories
 $(shell mkdir -p asm data extracted)
 
+ifeq ($(COMPILER),ido)
+SRC_DIRS := $(shell find src -type d -not -path src/gcc_fix)
+else
 SRC_DIRS := $(shell find src -type d)
+endif
+
 ASM_DIRS := $(shell find asm -type d -not -path "asm/non_matchings*") $(shell find data -type d)
 
 ifneq ($(wildcard $(EXTRACTED_DIR)/assets/audio),)
@@ -369,6 +410,7 @@ $(shell mkdir -p $(foreach dir, \
                     $(dir:$(EXTRACTED_DIR)/%=$(BUILD_DIR)/%)))
 endif
 
+ifeq ($(COMPILER),ido)
 # directory flags
 $(BUILD_DIR)/src/libultra/os/%.o: OPTFLAGS := -O1
 $(BUILD_DIR)/src/libultra/voice/%.o: OPTFLAGS := -O2
@@ -417,7 +459,16 @@ $(BUILD_DIR)/src/audio/%.o: CC := $(ASM_PROC) $(ASM_PROC_FLAGS) $(CC) -- $(AS) $
 $(BUILD_DIR)/src/overlays/%.o: CC := $(ASM_PROC) $(ASM_PROC_FLAGS) $(CC) -- $(AS) $(ASFLAGS) --
 
 $(BUILD_DIR)/assets/%.o: CC := $(ASM_PROC) $(ASM_PROC_FLAGS) $(CC) -- $(AS) $(ASFLAGS) --
-
+else
+# Note that if adding additional assets directories for modding reasons these flags must also be used there
+$(BUILD_DIR)/assets/%.o: CFLAGS += -fno-zero-initialized-in-bss -fno-toplevel-reorder
+$(BUILD_DIR)/src/%.o: CFLAGS += -fexec-charset=euc-jp
+$(BUILD_DIR)/src/libultra/libc/ll.o: OPTFLAGS := -Ofast
+$(BUILD_DIR)/src/overlays/%.o: CFLAGS += -fno-merge-constants -mno-explicit-relocs -mno-split-addresses
+
+# Temporary: Hardcoded pointers in assets (specifically object_dmask and object_osn)
+$(BUILD_DIR)/assets/%.o: WARNINGS += -Wno-error=int-conversion
+endif
 
 $(SHIFTJIS_O_FILES): CC_CHECK_WARNINGS += -Wno-multichar -Wno-type-limits -Wno-overflow
 
@@ -551,9 +602,13 @@ $(BUILD_DIR)/%.o: %.s
 	$(CPP) $(CPPFLAGS) $(IINC) $< | $(AS) $(ASFLAGS) $(IINC) $(ENDIAN) -o $@
 
 $(BUILD_DIR)/assets/text/%.o: assets/text/%.c
+ifneq ($(COMPILER),gcc)
 # Preprocess text with modern cpp for varargs macros
 	$(CPP) -undef -D_LANGUAGE_C -D__sgi $(CPPFLAGS) $(IINC) $< -o $(@:.o=.c)
-	$(CC) -c $(CFLAGS) $(WARNINGS) $(C_DEFINES) $(MIPS_VERSION) $(ENDIAN) $(OPTFLAGS) -o $@ $(@:.o=.c)
+	$(CC) -c $(CFLAGS) $(IINC) $(WARNINGS) $(C_DEFINES) $(MIPS_VERSION) $(ENDIAN) $(OPTFLAGS) -o $@ $(@:.o=.c)
+else
+	$(CC) -c $(CFLAGS) $(IINC) $(WARNINGS) $(C_DEFINES) $(MIPS_VERSION) $(ENDIAN) $(OPTFLAGS) -o $@ $<
+endif
 
 $(BUILD_DIR)/assets/%.o: assets/%.c
 	$(CC) -c $(CFLAGS) $(IINC) $(WARNINGS) $(C_DEFINES) $(MIPS_VERSION) $(ENDIAN) $(OPTFLAGS) -o $@ $<
diff --git a/spec b/spec
index 814df763c..2aaf3b438 100644
--- a/spec
+++ b/spec
@@ -244,6 +244,9 @@ beginseg
     include "$(BUILD_DIR)/src/boot/libc/strcpy.o"
     include "$(BUILD_DIR)/src/boot/libc/memmove.o"
     include "$(BUILD_DIR)/src/boot/build.o"
+#ifdef COMPILER_GCC
+    include "$(BUILD_DIR)/src/gcc_fix/missing_gcc_functions.o"
+#endif
 endseg
 
 beginseg
diff --git a/src/gcc_fix/missing_gcc_functions.c b/src/gcc_fix/missing_gcc_functions.c
new file mode 100644
index 000000000..76bf8e9db
--- /dev/null
+++ b/src/gcc_fix/missing_gcc_functions.c
@@ -0,0 +1,237 @@
+/* --------------------------------------------------------------------------------*/
+/* Depending on the toolchain used, an appropriate precompiled libgcc library      */
+/* may not exist and cannot be linked against. Until we have a better work around, */
+/* necessary gcc functions are hosted here in order to properly compile.           */
+/* This file is NOT a part of the original game and only exists to help gcc work.  */
+/* --------------------------------------------------------------------------------*/
+
+#include "global.h"
+
+// Self-hosted libc memory functions, gcc assumes these exist even in a freestanding
+// environment and there is no way to tell it otherwise.
+
+int memcmp(const void* s1, const void* s2, size_t n) {
+    const u8* m1 = s1;
+    const u8* m2 = s2;
+    size_t i;
+
+    for (i = 0; i < n; i++) {
+        if (m1[i] < m2[i]) {
+            return -1;
+        } else if (m1[i] > m2[i]) {
+            return 1;
+        }
+    }
+
+    return 0;
+}
+
+// Conversions involving 64-bit integer types required by the O32 MIPS ABI.
+
+// f32 -> u64, negative values become 0
+u64 __fixunssfdi(f32 a) {
+    if (a > 0.0f) {
+        register union {
+            f64 f;
+            u64 i;
+        } m;
+
+        __asm__("cvt.l.s %0, %1" : "=f"(m.f) : "f"(a));
+        return m.i;
+    }
+    return 0;
+}
+
+// f64 -> u64, negative values become 0
+u64 __fixunsdfdi(f64 a) {
+    if (a > 0.0) {
+        register union {
+            f64 f;
+            u64 i;
+        } m;
+
+        __asm__("cvt.l.d %0, %1" : "=f"(m.f) : "f"(a));
+        return m.i;
+    }
+    return 0;
+}
+
+// f32 -> s64
+s64 __fixsfdi(f32 c) {
+    register union {
+        f64 f;
+        s64 i;
+    } m;
+
+    __asm__("cvt.l.s %0, %1" : "=f"(m.f) : "f"(c));
+    return m.i;
+}
+
+// f64 -> s64
+s64 __fixdfdi(f64 c) {
+    register union {
+        f64 f;
+        s64 i;
+    } m;
+
+    __asm__("cvt.l.d %0, %1" : "=f"(m.f) : "f"(c));
+    return m.i;
+}
+
+// s64 -> f32
+f32 __floatdisf(s64 c) {
+    register union {
+        f64 f;
+        s64 i;
+    } m;
+    register f32 v;
+
+    m.i = c;
+    __asm__("cvt.s.l %0, %1" : "=f"(v) : "f"(m.f));
+    return v;
+}
+
+// s64 -> f64
+f64 __floatdidf(s64 c) {
+    register union {
+        f64 f;
+        s64 i;
+    } m;
+    register f64 v;
+
+    m.i = c;
+    __asm__("cvt.d.l %0, %1" : "=f"(v) : "f"(m.f));
+    return v;
+}
+
+// u64 -> f32
+f32 __floatundisf(u64 c) {
+    register union {
+        f64 f;
+        u64 i;
+    } m;
+    register f32 v;
+
+    m.i = c;
+    __asm__("cvt.s.l %0, %1" : "=f"(v) : "f"(m.f));
+    if ((s64)c < 0) {
+        // cvt.s.l assumes signed input, adjust output
+        v += 4294967296.0f; // 2^32
+    }
+    return v;
+}
+
+// u64 -> f64
+f64 __floatundidf(u64 c) {
+    register union {
+        f64 f;
+        u64 i;
+    } m;
+    register f64 v;
+
+    m.i = c;
+    __asm__("cvt.d.l %0, %1" : "=f"(v) : "f"(m.f));
+    if ((s64)c < 0) {
+        // cvt.d.l assumes signed input, adjust output
+        v += 18446744073709551616.0; // 2^64
+    }
+    return v;
+}
+
+// Compute x^m by binary exponentiation
+
+f32 __powisf2(f32 x, s32 m) {
+    u32 n = (m < 0) ? -m : m;
+    f32 y = (n % 2 != 0) ? x : 1.0f;
+
+    while (n >>= 1) {
+        x = x * x;
+
+        if (n % 2 != 0) {
+            y = y * x;
+        }
+    }
+    return (m < 0) ? (1.0f / y) : y;
+}
+
+// Compute division and modulo of 64-bit signed and unsigned integers
+
+__asm__("                                   \n\
+    .set push                               \n\
+    .set noreorder                          \n\
+    .set gp=64                              \n\
+                                            \n\
+.global __umoddi3                           \n\
+__umoddi3:                                  \n\
+  .type __umoddi3, @function                \n\
+  .ent __umoddi3                            \n\
+    sw      $a0, 0x0($sp)                   \n\
+    sw      $a1, 0x4($sp)                   \n\
+    sw      $a2, 0x8($sp)                   \n\
+    sw      $a3, 0xC($sp)                   \n\
+    ld      $t6, 0($sp)                     \n\
+    ld      $t7, 8($sp)                     \n\
+    dremu   $v0, $t6, $t7                   \n\
+    dsll32  $v1, $v0, 0                     \n\
+    dsra32  $v1, $v1, 0                     \n\
+    jr      $ra                             \n\
+     dsra32 $v0, $v0, 0                     \n\
+  .end __umoddi3                            \n\
+  .size __umoddi3, . - __umoddi3            \n\
+                                            \n\
+.global __udivdi3                           \n\
+__udivdi3:                                  \n\
+  .type __udivdi3, @function                \n\
+  .ent __udivdi3                            \n\
+    sw      $a0, 0x0($sp)                   \n\
+    sw      $a1, 0x4($sp)                   \n\
+    sw      $a2, 0x8($sp)                   \n\
+    sw      $a3, 0xC($sp)                   \n\
+    ld      $t6, 0($sp)                     \n\
+    ld      $t7, 8($sp)                     \n\
+    ddivu   $v0, $t6, $t7                   \n\
+    dsll32  $v1, $v0, 0                     \n\
+    dsra32  $v1, $v1, 0                     \n\
+    jr      $ra                             \n\
+     dsra32 $v0, $v0, 0                     \n\
+  .end __udivdi3                            \n\
+  .size __udivdi3, . - __udivdi3            \n\
+                                            \n\
+.global __moddi3                            \n\
+__moddi3:                                   \n\
+  .type __moddi3, @function                 \n\
+  .ent __moddi3                             \n\
+    sw      $a0, 0x0($sp)                   \n\
+    sw      $a1, 0x4($sp)                   \n\
+    sw      $a2, 0x8($sp)                   \n\
+    sw      $a3, 0xC($sp)                   \n\
+    ld      $t6, 0($sp)                     \n\
+    ld      $t7, 8($sp)                     \n\
+    drem    $v0, $t6, $t7                   \n\
+    dsll32  $v1, $v0, 0                     \n\
+    dsra32  $v1, $v1, 0                     \n\
+    jr      $ra                             \n\
+     dsra32 $v0, $v0, 0                     \n\
+  .end __moddi3                             \n\
+  .size __moddi3, . - __moddi3              \n\
+                                            \n\
+.global __divdi3                            \n\
+__divdi3:                                   \n\
+  .type __divdi3, @function                 \n\
+  .ent __divdi3                             \n\
+    sw    $a0, 0x0($sp)                     \n\
+    sw    $a1, 0x4($sp)                     \n\
+    sw    $a2, 0x8($sp)                     \n\
+    sw    $a3, 0xC($sp)                     \n\
+    ld    $t6, 0($sp)                       \n\
+    ld    $t7, 8($sp)                       \n\
+    ddiv  $v0, $t6, $t7                     \n\
+    dsll32 $v1, $v0, 0                      \n\
+    dsra32 $v1, $v1, 0                      \n\
+    jr    $ra                               \n\
+     dsra32 $v0, $v0, 0                     \n\
+  .end __divdi3                             \n\
+  .size __divdi3, . - __divdi3              \n\
+                                            \n\
+    .set pop                                \n\
+                                            \n");
diff --git a/tools/buildtools/mkldscript.c b/tools/buildtools/mkldscript.c
index 6a9a066e4..5a53ba2cf 100644
--- a/tools/buildtools/mkldscript.c
+++ b/tools/buildtools/mkldscript.c
@@ -18,10 +18,11 @@
 // With IDO, the padding of sections to an aligned size makes the section start at aligned addresses out of the box,
 // so the explicit alignment has no further effect.
 
-struct Segment* g_segments;
+struct Segment *g_segments;
 int g_segmentsCount;
 
-static void write_ld_script(FILE* fout) {
+static void write_ld_script(FILE *fout)
+{
     int i;
     int j;
 
@@ -31,8 +32,9 @@ static void write_ld_script(FILE* fout) {
           "    _RomStart = _RomSize;\n\n",
           fout);
 
-    for (i = 0; i < g_segmentsCount; i++) {
-        const struct Segment* seg = &g_segments[i];
+    for (i = 0; i < g_segmentsCount; i++)
+    {
+        const struct Segment *seg = &g_segments[i];
 
         // align start of ROM segment
         if (seg->fields & (1 << STMT_romalign))
@@ -42,35 +44,28 @@ static void write_ld_script(FILE* fout) {
 
         // initialized data (.text, .data, .rodata, .sdata)
 
-        // Increment the start of the section
-        // if (seg->fields & (1 << STMT_increment))
-        // fprintf(fout, "    . += 0x%08X;\n", seg->increment);
-
-        fprintf(fout,
-                "    _%sSegmentRomStartTemp = _RomSize;\n"
-                "    _%sSegmentRomStart = _%sSegmentRomStartTemp;\n"
-                "    ..%s ",
-                seg->name, seg->name, seg->name, seg->name);
+        fprintf(fout, "    _%sSegmentRomStartTemp = _RomSize;\n"
+                  "    _%sSegmentRomStart = _%sSegmentRomStartTemp;\n"
+                  "    ..%s ", seg->name, seg->name, seg->name, seg->name);
 
         if (seg->fields & (1 << STMT_after))
-            fprintf(fout, "_%sSegmentEnd ", seg->after);
+            fprintf(fout, "(_%sSegmentEnd + %i) & ~ %i ", seg->after, seg->align - 1, seg->align - 1);
         else if (seg->fields & (1 << STMT_number))
             fprintf(fout, "0x%02X000000 ", seg->number);
         else if (seg->fields & (1 << STMT_address))
             fprintf(fout, "0x%08X ", seg->address);
+        else
+            fprintf(fout, "ALIGN(0x%X) ", seg->align);
 
         // (AT(_RomSize) isn't necessary, but adds useful "load address" lines to the map file)
-        fprintf(fout,
-                ": AT(_RomSize)\n    {\n"
-                "        _%sSegmentStart = .;\n"
-                "        . = ALIGN(0x10);\n"
-                "        _%sSegmentTextStart = .;\n",
-                seg->name, seg->name);
-
-        if (seg->fields & (1 << STMT_align))
-            fprintf(fout, "        . = ALIGN(0x%X);\n", seg->align);
+        fprintf(fout, ": AT(_RomSize)\n    {\n"
+                  "        _%sSegmentStart = .;\n"
+                  "        . = ALIGN(0x10);\n"
+                  "        _%sSegmentTextStart = .;\n",
+                  seg->name, seg->name);
 
-        for (j = 0; j < seg->includesCount; j++) {
+        for (j = 0; j < seg->includesCount; j++)
+        {
             fprintf(fout, "            %s (.text)\n", seg->includes[j].fpath);
             if (seg->includes[j].linkerPadding != 0)
                 fprintf(fout, "            . += 0x%X;\n", seg->includes[j].linkerPadding);
@@ -79,39 +74,24 @@ static void write_ld_script(FILE* fout) {
 
         fprintf(fout, "        _%sSegmentTextEnd = .;\n", seg->name);
 
-        fprintf(fout, "    _%sSegmentTextSize = ABSOLUTE( _%sSegmentTextEnd - _%sSegmentTextStart );\n", seg->name,
-                seg->name, seg->name);
+        fprintf(fout, "    _%sSegmentTextSize = ABSOLUTE( _%sSegmentTextEnd - _%sSegmentTextStart );\n", seg->name, seg->name, seg->name);
 
         fprintf(fout, "        _%sSegmentDataStart = .;\n", seg->name);
 
-        for (j = 0; j < seg->includesCount; j++) {
-            fprintf(fout,
-                    "            %s (.data)\n"
-                    "        . = ALIGN(0x10);\n",
-                    seg->includes[j].fpath);
+        for (j = 0; j < seg->includesCount; j++)
+        {
+            fprintf(fout, "            %s (.data)\n"
+                            "        . = ALIGN(0x10);\n", seg->includes[j].fpath);
         }
 
-        /*
-         for (j = 0; j < seg->includesCount; j++)
-            fprintf(fout, "            %s (.rodata)\n", seg->includes[j].fpath);
-
-          for (j = 0; j < seg->includesCount; j++)
-            fprintf(fout, "            %s (.sdata)\n", seg->includes[j].fpath);
-        */
-
-        // fprintf(fout, "        . = ALIGN(0x10);\n");
         fprintf(fout, "        _%sSegmentDataEnd = .;\n", seg->name);
 
-        fprintf(fout, "    _%sSegmentDataSize = ABSOLUTE( _%sSegmentDataEnd - _%sSegmentDataStart );\n", seg->name,
-                seg->name, seg->name);
+        fprintf(fout, "    _%sSegmentDataSize = ABSOLUTE( _%sSegmentDataEnd - _%sSegmentDataStart );\n", seg->name, seg->name, seg->name);
 
         fprintf(fout, "        _%sSegmentRoDataStart = .;\n", seg->name);
 
-        for (j = 0; j < seg->includesCount; j++) {
-            fprintf(fout,
-                    "            %s (.rodata)\n"
-                    "        . = ALIGN(0x10);\n",
-                    seg->includes[j].fpath);
+        for (j = 0; j < seg->includesCount; j++)
+        {
             // Compilers other than IDO, such as GCC, produce different sections such as
             // the ones named directly below. These sections do not contain values that
             // need relocating, but we need to ensure that the base .rodata section
@@ -120,32 +100,22 @@ static void write_ld_script(FILE* fout) {
             // the beginning of the entire rodata area in order to remain consistent.
             // Inconsistencies will lead to various .rodata reloc crashes as a result of
             // either missing relocs or wrong relocs.
-            fprintf(fout,
-                    "            %s (.rodata.str1.4)\n"
-                    "        . = ALIGN(0x10);\n",
-                    seg->includes[j].fpath);
-            fprintf(fout,
-                    "            %s (.rodata.cst4)\n"
-                    "        . = ALIGN(0x10);\n",
-                    seg->includes[j].fpath);
-            fprintf(fout,
-                    "            %s (.rodata.cst8)\n"
-                    "        . = ALIGN(0x10);\n",
-                    seg->includes[j].fpath);
+            fprintf(fout, "            %s (.rodata)\n"
+                        "            %s (.rodata.str*)\n"
+                        "            %s (.rodata.cst*)\n"
+                        "        . = ALIGN(0x10);\n",
+                    seg->includes[j].fpath, seg->includes[j].fpath, seg->includes[j].fpath);
         }
 
         fprintf(fout, "        _%sSegmentRoDataEnd = .;\n", seg->name);
 
-        fprintf(fout, "    _%sSegmentRoDataSize = ABSOLUTE( _%sSegmentRoDataEnd - _%sSegmentRoDataStart );\n",
-                seg->name, seg->name, seg->name);
+        fprintf(fout, "    _%sSegmentRoDataSize = ABSOLUTE( _%sSegmentRoDataEnd - _%sSegmentRoDataStart );\n", seg->name, seg->name, seg->name);
 
         fprintf(fout, "        _%sSegmentSDataStart = .;\n", seg->name);
 
         for (j = 0; j < seg->includesCount; j++)
-            fprintf(fout,
-                    "            %s (.sdata)\n"
-                    "        . = ALIGN(0x10);\n",
-                    seg->includes[j].fpath);
+            fprintf(fout, "            %s (.sdata)\n"
+                        "        . = ALIGN(0x10);\n", seg->includes[j].fpath);
 
         fprintf(fout, "        _%sSegmentSDataEnd = .;\n", seg->name);
 
@@ -163,169 +133,118 @@ static void write_ld_script(FILE* fout) {
 
         fprintf(fout, "    _RomSize += ( _%sSegmentOvlEnd - _%sSegmentTextStart );\n", seg->name, seg->name);
 
-        fprintf(fout,
-                "    _%sSegmentRomEndTemp = _RomSize;\n"
-                "_%sSegmentRomEnd = _%sSegmentRomEndTemp;\n\n",
-                seg->name, seg->name, seg->name);
+        fprintf(fout, "    _%sSegmentRomEndTemp = _RomSize;\n"
+                  "_%sSegmentRomEnd = _%sSegmentRomEndTemp;\n\n",
+                  seg->name, seg->name, seg->name);
 
         // align end of ROM segment
         if (seg->fields & (1 << STMT_romalign))
             fprintf(fout, "    _RomSize = (_RomSize + %i) & ~ %i;\n", seg->romalign - 1, seg->romalign - 1);
 
         // uninitialized data (.sbss, .scommon, .bss, COMMON)
-        fprintf(fout,
-                "    ..%s.bss ADDR(..%s) + SIZEOF(..%s) (NOLOAD) :\n"
-                /*"    ..%s.bss :\n"*/
-                "    {\n"
-                "        . = ALIGN(0x10);\n"
-                "        _%sSegmentBssStart = .;\n",
-                seg->name, seg->name, seg->name, seg->name);
-
-        if (seg->fields & (1 << STMT_align))
-            fprintf(fout, "        . = ALIGN(0x%X);\n", seg->align);
+        fprintf(fout, "    ..%s.bss ADDR(..%s) + SIZEOF(..%s) (NOLOAD) :\n"
+                      /*"    ..%s.bss :\n"*/
+                      "    {\n"
+                      "        . = ALIGN(0x10);\n"
+                      "        _%sSegmentBssStart = .;\n",
+                      seg->name, seg->name, seg->name, seg->name);
 
         for (j = 0; j < seg->includesCount; j++)
-            fprintf(fout,
-                    "            %s (.sbss)\n"
-                    "        . = ALIGN(0x10);\n",
-                    seg->includes[j].fpath);
+            fprintf(fout, "            %s (.sbss)\n"
+                        "        . = ALIGN(0x10);\n", seg->includes[j].fpath);
 
         for (j = 0; j < seg->includesCount; j++)
-            fprintf(fout,
-                    "            %s (.scommon)\n"
-                    "        . = ALIGN(0x10);\n",
-                    seg->includes[j].fpath);
+            fprintf(fout, "            %s (.scommon)\n"
+                        "        . = ALIGN(0x10);\n", seg->includes[j].fpath);
 
         for (j = 0; j < seg->includesCount; j++)
-            fprintf(fout,
-                    "            %s (.bss)\n"
-                    "        . = ALIGN(0x10);\n",
-                    seg->includes[j].fpath);
+            fprintf(fout, "            %s (.bss)\n"
+                        "        . = ALIGN(0x10);\n", seg->includes[j].fpath);
 
         for (j = 0; j < seg->includesCount; j++)
-            fprintf(fout,
-                    "            %s (COMMON)\n"
-                    "        . = ALIGN(0x10);\n",
-                    seg->includes[j].fpath);
-
-        fprintf(fout,
-                "        . = ALIGN(0x10);\n"
-                "        _%sSegmentBssEnd = .;\n"
-                "        _%sSegmentEnd = .;\n"
-                "    }\n"
-                "    _%sSegmentBssSize = ABSOLUTE( _%sSegmentBssEnd - _%sSegmentBssStart );\n\n",
-                seg->name, seg->name, seg->name, seg->name, seg->name);
-
-        // Increment the end of the segment
-        // if (seg->fields & (1 << STMT_increment))
-        // fprintf(fout, "    . += 0x%08X;\n", seg->increment);
-
-        // fprintf(fout, "    ..%s.ovl ADDR(..%s) + SIZEOF(..%s) :\n"
-        //     /*"    ..%s.bss :\n"*/
-        //     "    {\n",
-        //     seg->name, seg->name, seg->name);
-        // fprintf(fout, "        _%sSegmentOvlStart = .;\n", seg->name);
-
-        // for (j = 0; j < seg->includesCount; j++)
-        //     fprintf(fout, "            %s (.ovl)\n", seg->includes[j].fpath);
-
-        ////fprintf(fout, "        . = ALIGN(0x10);\n");
-
-        // fprintf(fout, "        _%sSegmentOvlEnd = .;\n", seg->name);
-
-        // fprintf(fout, "\n    }\n");
+            fprintf(fout, "            %s (COMMON)\n"
+                        "        . = ALIGN(0x10);\n", seg->includes[j].fpath);
+
+        fprintf(fout, "        . = ALIGN(0x10);\n"
+                      "        _%sSegmentBssEnd = .;\n"
+                      "        _%sSegmentEnd = .;\n"
+                      "    }\n"
+                      "    _%sSegmentBssSize = ABSOLUTE( _%sSegmentBssEnd - _%sSegmentBssStart );\n\n",
+                      seg->name, seg->name, seg->name, seg->name, seg->name);
     }
 
     fputs("    _RomEnd = _RomSize;\n\n", fout);
 
     // Debugging sections
     fputs(
-        // mdebug debug sections
-        "    .mdebug           : { *(.mdebug) }"
-        "\n"
-        "    .mdebug.abi32     : { *(.mdebug.abi32) }"
-        "\n"
+        // mdebug sections
+          "    .pdr              : { *(.pdr) }"                                             "\n"
+          "    .mdebug           : { *(.mdebug) }"                                          "\n"
+          "    .mdebug.abi32     : { *(.mdebug.abi32) }"                                    "\n"
         // DWARF debug sections
         // Symbols in the DWARF debugging sections are relative to the beginning of the section so we begin them at 0.
         // DWARF 1
-        "    .debug          0 : { *(.debug) }"
-        "\n"
-        "    .line           0 : { *(.line) }"
-        "\n"
+          "    .debug          0 : { *(.debug) }"                                           "\n"
+          "    .line           0 : { *(.line) }"                                            "\n"
         // GNU DWARF 1 extensions
-        "    .debug_srcinfo  0 : { *(.debug_srcinfo) }"
-        "\n"
-        "    .debug_sfnames  0 : { *(.debug_sfnames) }"
-        "\n"
+          "    .debug_srcinfo  0 : { *(.debug_srcinfo) }"                                   "\n"
+          "    .debug_sfnames  0 : { *(.debug_sfnames) }"                                   "\n"
         // DWARF 1.1 and DWARF 2
-        "    .debug_aranges  0 : { *(.debug_aranges) }"
-        "\n"
-        "    .debug_pubnames 0 : { *(.debug_pubnames) }"
-        "\n"
+          "    .debug_aranges  0 : { *(.debug_aranges) }"                                   "\n"
+          "    .debug_pubnames 0 : { *(.debug_pubnames) }"                                  "\n"
         // DWARF 2
-        "    .debug_info     0 : { *(.debug_info .gnu.linkonce.wi.*) }"
-        "\n"
-        "    .debug_abbrev   0 : { *(.debug_abbrev) }"
-        "\n"
-        "    .debug_line     0 : { *(.debug_line .debug_line.* .debug_line_end ) }"
-        "\n"
-        "    .debug_frame    0 : { *(.debug_frame) }"
-        "\n"
-        "    .debug_str      0 : { *(.debug_str) }"
-        "\n"
-        "    .debug_loc      0 : { *(.debug_loc) }"
-        "\n"
-        "    .debug_macinfo  0 : { *(.debug_macinfo) }"
-        "\n"
+          "    .debug_info     0 : { *(.debug_info .gnu.linkonce.wi.*) }"                   "\n"
+          "    .debug_abbrev   0 : { *(.debug_abbrev) }"                                    "\n"
+          "    .debug_line     0 : { *(.debug_line .debug_line.* .debug_line_end ) }"       "\n"
+          "    .debug_frame    0 : { *(.debug_frame) }"                                     "\n"
+          "    .debug_str      0 : { *(.debug_str) }"                                       "\n"
+          "    .debug_loc      0 : { *(.debug_loc) }"                                       "\n"
+          "    .debug_macinfo  0 : { *(.debug_macinfo) }"                                   "\n"
         // SGI/MIPS DWARF 2 extensions
-        "    .debug_weaknames 0 : { *(.debug_weaknames) }"
-        "\n"
-        "    .debug_funcnames 0 : { *(.debug_funcnames) }"
-        "\n"
-        "    .debug_typenames 0 : { *(.debug_typenames) }"
-        "\n"
-        "    .debug_varnames  0 : { *(.debug_varnames) }"
-        "\n"
+          "    .debug_weaknames 0 : { *(.debug_weaknames) }"                                "\n"
+          "    .debug_funcnames 0 : { *(.debug_funcnames) }"                                "\n"
+          "    .debug_typenames 0 : { *(.debug_typenames) }"                                "\n"
+          "    .debug_varnames  0 : { *(.debug_varnames) }"                                 "\n"
         // DWARF 3
-        "    .debug_pubtypes 0 : { *(.debug_pubtypes) }"
-        "\n"
-        "    .debug_ranges   0 : { *(.debug_ranges) }"
-        "\n"
-        // DWARF Extension
-        "    .debug_macro    0 : { *(.debug_macro) }"
-        "\n"
-        "    .gnu.attributes 0 : { KEEP (*(.gnu.attributes)) }"
-        "\n",
-        fout);
+          "    .debug_pubtypes 0 : { *(.debug_pubtypes) }"                                  "\n"
+          "    .debug_ranges   0 : { *(.debug_ranges) }"                                    "\n"
+        // DWARF 5
+          "    .debug_addr     0 : { *(.debug_addr) }"                                      "\n"
+          "    .debug_line_str 0 : { *(.debug_line_str) }"                                  "\n"
+          "    .debug_loclists 0 : { *(.debug_loclists) }"                                  "\n"
+          "    .debug_macro    0 : { *(.debug_macro) }"                                     "\n"
+          "    .debug_names    0 : { *(.debug_names) }"                                     "\n"
+          "    .debug_rnglists 0 : { *(.debug_rnglists) }"                                  "\n"
+          "    .debug_str_offsets 0 : { *(.debug_str_offsets) }"                            "\n"
+          "    .debug_sup      0 : { *(.debug_sup) }\n"
+        // gnu attributes
+          "    .gnu.attributes 0 : { KEEP (*(.gnu.attributes)) }"                           "\n", fout);
 
     // Discard all other sections not mentioned above
-    fputs("    /DISCARD/ :"
-          "\n"
-          "    {"
-          "\n"
-          "       *(*);"
-          "\n"
-          "    }"
-          "\n",
-          fout);
+    fputs("    /DISCARD/ :"                                                                 "\n"
+          "    {"                                                                           "\n"
+          "       *(*);"                                                                    "\n"
+          "    }"                                                                           "\n", fout);
     fputs("}\n", fout);
 }
 
-static void usage(const char* execname) {
-    fprintf(stderr,
-            "Nintendo 64 linker script generation tool v0.03\n"
-            "usage: %s SPEC_FILE LD_SCRIPT\n"
-            "SPEC_FILE  file describing the organization of object files into segments\n"
-            "LD_SCRIPT  filename of output linker script\n",
-            execname);
+static void usage(const char *execname)
+{
+    fprintf(stderr, "Nintendo 64 linker script generation tool v0.03\n"
+                    "usage: %s SPEC_FILE LD_SCRIPT\n"
+                    "SPEC_FILE  file describing the organization of object files into segments\n"
+                    "LD_SCRIPT  filename of output linker script\n",
+                    execname);
 }
 
-int main(int argc, char** argv) {
-    FILE* ldout;
-    void* spec;
+int main(int argc, char **argv)
+{
+    FILE *ldout;
+    void *spec;
     size_t size;
 
-    if (argc != 3) {
+    if (argc != 3)
+    {
         usage(argv[0]);
         return 1;
     }