Remove hardcoded gap

Makefile

@@ -244,10 +244,10 @@ $(OBJ_DIR)/ld_script.ld: ld_script.txt $(OBJ_DIR)/sym_bss.ld $(OBJ_DIR)/sym_comm
 
 $(ELF): $(OBJ_DIR)/ld_script.ld $(OBJS)
 	cd $(OBJ_DIR) && ../../$(LD) $(LDFLAGS) -T ld_script.ld -o ../../$@ $(LIB)
+	$(FIX) $@ -t"$(TITLE)" -c$(GAME_CODE) -m$(MAKER_CODE) -r$(REVISION) --silent
 
 $(ROM): $(ELF)
-	$(OBJCOPY) -O binary $< $@
+	$(OBJCOPY) -O binary --gap-fill 0xFF --pad-to 0x9000000 $< $@
-	$(FIX) $@ -p -t"$(TITLE)" -c$(GAME_CODE) -m$(MAKER_CODE) -r$(REVISION) --silent
 
 berry_fix/berry_fix.gba:
 	@$(MAKE) -C berry_fix

ld_script.txt

@@ -541,13 +541,7 @@ SECTIONS {
         data/multiboot_pokemon_colosseum.o(.rodata);
     } =0
 
-    gap1 :
+	. = 0x08D00000;
-    {
-        gap1_start = ABSOLUTE(.);
-        BYTE(0xFF)
-        . = 0x8D00000 - gap1_start;
-    } =0xFF
-
     gfx_data :
     ALIGN(4)
     {

tools/gbafix/gbafix.c

@@ -33,6 +33,7 @@
 
     History
     -------
+    v1.07 - added support for ELF input, (PikalaxALT)
     v1.06 - added output silencing, (Diegoisawesome)
     v1.05 - added debug offset argument, (Diegoisawesome)
     v1.04 - converted to plain C, (WinterMute)
@@ -48,8 +49,9 @@
 #include <stdlib.h>
 #include <string.h>
 #include <stdint.h>
+#include "elf.h"
 
-#define VER		"1.06"
+#define VER        "1.07"
 #define ARGV    argv[arg]
 #define VALUE    (ARGV+2)
 #define NUMBER    strtoul(VALUE, NULL, 0)
@@ -137,6 +139,7 @@ int main(int argc, char *argv[])
     char *argfile = 0;
     FILE *infile;
     int silent = 0;
+    int schedule_pad = 0;
 
     int size,bit;
 
@@ -171,12 +174,30 @@ int main(int argc, char *argv[])
         return -1;
     }
 
+    uint32_t sh_offset = 0;
+
     // read file
     infile = fopen(argfile, "r+b");
     if (!infile) { fprintf(stderr, "Error opening input file!\n"); return -1; }
-	fseek(infile, 0, SEEK_SET);
+    fseek(infile, sh_offset, SEEK_SET);
     fread(&header, sizeof(header), 1, infile);
 
+    // elf check
+    Elf32_Shdr secHeader;
+    if (memcmp(&header, ELFMAG, 4) == 0) {
+        Elf32_Ehdr *elfHeader = (Elf32_Ehdr *)&header;
+        fseek(infile, elfHeader->e_shoff, SEEK_SET);
+        int i;
+        for (i = 0; i < elfHeader->e_shnum; i++) {
+            fread(&secHeader, sizeof(Elf32_Shdr), 1, infile);
+            if (secHeader.sh_type == SHT_PROGBITS && secHeader.sh_addr == elfHeader->e_entry) break;
+        }
+        if (i == elfHeader->e_shnum) { fprintf(stderr, "Error finding entry point!\n"); return 1; }
+        fseek(infile, secHeader.sh_offset, SEEK_SET);
+        sh_offset = secHeader.sh_offset;
+        fread(&header, sizeof(header), 1, infile);
+    }
+
     // fix some data
     memcpy(header.logo, good_header.logo, sizeof(header.logo));
     memcpy(&header.fixed, &good_header.fixed, sizeof(header.fixed));
@@ -191,15 +212,7 @@ int main(int argc, char *argv[])
             {
                 case 'p':    // pad
                 {
-					fseek(infile, 0, SEEK_END);
+                    schedule_pad = 1;
-					size = ftell(infile);
-					for (bit=31; bit>=0; bit--) if (size & (1<<bit)) break;
-					if (size != (1<<bit))
-					{
-						int todo = (1<<(bit+1)) - size;
-						while (todo--) fputc(0xFF, infile);
-					}
-					fseek(infile, 0, SEEK_SET);
                     break;
                 }
 
@@ -279,7 +292,22 @@ int main(int argc, char *argv[])
     header.complement = HeaderComplement();
     //header.checksum = checksum_without_header + HeaderChecksum();
 
-	fseek(infile, 0, SEEK_SET);
+    if (schedule_pad) {
+        if (sh_offset != 0) {
+            fprintf(stderr, "Warning: Cannot safely pad an ELF\n");
+        } else {
+            fseek(infile, 0, SEEK_END);
+            size = ftell(infile);
+            for (bit=31; bit>=0; bit--) if (size & (1<<bit)) break;
+            if (size != (1<<bit))
+            {
+                int todo = (1<<(bit+1)) - size;
+                while (todo--) fputc(0xFF, infile);
+            }
+        }
+    }
+
+    fseek(infile, sh_offset, SEEK_SET);
     fwrite(&header, sizeof(header), 1, infile);
     fclose(infile);