Build DaMaGe-Emulator Boot ROM

BootROMs/cgb_boot.asm

@@ -549,7 +549,8 @@ TrademarkSymbol:
     db $3c,$42,$b9,$a5,$b9,$a5,$42,$3c
 
 SameboyLogo:
-    incbin "SameboyLogo.1bpp"
+    ; incbin "SameboyLogo.1bpp"
+    incbin "DamageLogo.1bpp"
 SameboyLogoEnd:
 
 AnimationColors:
@@ -1174,4 +1175,4 @@ BgPalettes:
 InputPalette:
     ds 1
 WaitLoopCounter:
-    ds 1
+    ds 1

BootROMs/dmg_boot.asm

@@ -89,15 +89,19 @@ Start:
 ; Wait ~1.15 seconds
     ld b, 70
     call WaitBFrames
-    
+
 ; Set registers to match the original DMG boot
+IF DEF(MGB)
     ld hl, $01B0
+ELSE
+    ld hl, $FFB0
+ENDC
     push hl
     pop af
     ld hl, $014D
     ld bc, $0013
     ld de, $00D8
-    
+
 ; Boot the game
     jp BootGame
 

BootROMs/mgb_boot.asm

@@ -0,0 +1,2 @@
+MGB EQU 1
+include "dmg_boot.asm"

Makefile

@@ -106,9 +106,9 @@ endif
 
 cocoa: $(BIN)/SameBoy.app
 quicklook: $(BIN)/SameBoy.qlgenerator
-sdl: $(SDL_TARGET) $(BIN)/SDL/dmg_boot.bin $(BIN)/SDL/cgb_boot.bin $(BIN)/SDL/agb_boot.bin $(BIN)/SDL/sgb_boot.bin $(BIN)/SDL/sgb2_boot.bin $(BIN)/SDL/LICENSE $(BIN)/SDL/registers.sym $(BIN)/SDL/background.bmp $(BIN)/SDL/Shaders
-bootroms: $(BIN)/BootROMs/agb_boot.bin $(BIN)/BootROMs/cgb_boot.bin $(BIN)/BootROMs/dmg_boot.bin $(BIN)/BootROMs/sgb_boot.bin $(BIN)/BootROMs/sgb2_boot.bin
-tester: $(TESTER_TARGET) $(BIN)/tester/dmg_boot.bin $(BIN)/tester/cgb_boot.bin $(BIN)/tester/agb_boot.bin $(BIN)/tester/sgb_boot.bin $(BIN)/tester/sgb2_boot.bin
+sdl: $(SDL_TARGET) $(BIN)/SDL/dmg_boot.bin $(BIN)/SDL/mgb_boot.bin $(BIN)/SDL/cgb_boot.bin $(BIN)/SDL/cgb_boot_fast.bin $(BIN)/SDL/agb_boot.bin $(BIN)/SDL/sgb_boot.bin $(BIN)/SDL/sgb2_boot.bin $(BIN)/SDL/LICENSE $(BIN)/SDL/registers.sym $(BIN)/SDL/background.bmp $(BIN)/SDL/Shaders
+bootroms: $(BIN)/BootROMs/agb_boot.bin $(BIN)/BootROMs/cgb_boot.bin $(BIN)/BootROMs/cgb_boot_fast.bin $(BIN)/BootROMs/dmg_boot.bin $(BIN)/BootROMs/mgb_boot.bin $(BIN)/BootROMs/sgb_boot.bin $(BIN)/BootROMs/sgb2_boot.bin
+tester: $(TESTER_TARGET) $(BIN)/tester/dmg_boot.bin $(BIN)/tester/mgb_boot.bin $(BIN)/tester/cgb_boot.bin $(BIN)/tester/cgb_boot_fast.bin $(BIN)/tester/agb_boot.bin $(BIN)/tester/sgb_boot.bin $(BIN)/tester/sgb2_boot.bin
 all: cocoa sdl tester libretro
 
 # Get a list of our source files and their respective object file targets
@@ -160,12 +160,12 @@ $(OBJ)/Core/%.c.o: Core/%.c
 $(OBJ)/%.c.o: %.c
 	-@$(MKDIR) -p $(dir $@)
 	$(CC) $(CFLAGS) -c $< -o $@
-	
+
 # HexFiend requires more flags
 $(OBJ)/HexFiend/%.m.o: HexFiend/%.m
 	-@$(MKDIR) -p $(dir $@)
 	$(CC) $(CFLAGS) $(OCFLAGS) -c $< -o $@ -fno-objc-arc -include HexFiend/HexFiend_2_Framework_Prefix.pch
-	
+
 $(OBJ)/%.m.o: %.m
 	-@$(MKDIR) -p $(dir $@)
 	$(CC) $(CFLAGS) $(OCFLAGS) -c $< -o $@
@@ -178,7 +178,9 @@ $(BIN)/SameBoy.app: $(BIN)/SameBoy.app/Contents/MacOS/SameBoy \
                     Cocoa/Info.plist \
                     Misc/registers.sym \
                     $(BIN)/SameBoy.app/Contents/Resources/dmg_boot.bin \
+                    $(BIN)/SameBoy.app/Contents/Resources/mgb_boot.bin \
                     $(BIN)/SameBoy.app/Contents/Resources/cgb_boot.bin \
+                    $(BIN)/SameBoy.app/Contents/Resources/cgb_boot_fast.bin \
                     $(BIN)/SameBoy.app/Contents/Resources/agb_boot.bin \
                     $(BIN)/SameBoy.app/Contents/Resources/sgb_boot.bin \
                     $(BIN)/SameBoy.app/Contents/Resources/sgb2_boot.bin \
@@ -203,7 +205,7 @@ endif
 
 $(BIN)/SameBoy.app/Contents/Resources/Base.lproj/%.nib: Cocoa/%.xib
 	ibtool --compile $@ $^
-	
+
 # Quick Look generator
 
 $(BIN)/SameBoy.qlgenerator: $(BIN)/SameBoy.qlgenerator/Contents/MacOS/SameBoyQL \
@@ -228,7 +230,7 @@ endif
 $(BIN)/SameBoy.qlgenerator/Contents/Resources/cgb_boot_fast.bin: $(BIN)/BootROMs/cgb_boot_fast.bin
 	-@$(MKDIR) -p $(dir $@)
 	cp -f $^ $@
-	
+
 # SDL Port
 
 # Unix versions build only one binary
@@ -255,7 +257,7 @@ $(OBJ)/%.o: %.rc
 else
 $(OBJ)/%.res: %.rc
 	-@$(MKDIR) -p $(dir $@)
-	rc /fo $@ /dVERSION=\"$(VERSION)\" $^ 
+	rc /fo $@ /dVERSION=\"$(VERSION)\" $^
 
 %.o: %.res
 	cvtres /OUT:"$@" $^
@@ -282,11 +284,11 @@ $(BIN)/tester/sameboy_tester.exe: $(CORE_OBJECTS) $(SDL_OBJECTS)
 $(BIN)/SDL/%.bin $(BIN)/tester/%.bin: $(BOOTROMS_DIR)/%.bin
 	-@$(MKDIR) -p $(dir $@)
 	cp -f $^ $@
-	
+
 $(BIN)/SameBoy.app/Contents/Resources/%.bin: $(BOOTROMS_DIR)/%.bin
 	-@$(MKDIR) -p $(dir $@)
 	cp -f $^ $@
-	
+
 $(BIN)/SDL/LICENSE: LICENSE
 	-@$(MKDIR) -p $(dir $@)
 	cp -f $^ $@
@@ -294,7 +296,7 @@ $(BIN)/SDL/LICENSE: LICENSE
 $(BIN)/SDL/registers.sym: Misc/registers.sym
 	-@$(MKDIR) -p $(dir $@)
 	cp -f $^ $@
-	
+
 $(BIN)/SDL/background.bmp: SDL/background.bmp
 	-@$(MKDIR) -p $(dir $@)
 	cp -f $^ $@
@@ -309,13 +311,13 @@ $(BIN)/BootROMs/%.bin: BootROMs/%.asm
 	-@$(MKDIR) -p $(dir $@)
 	cd BootROMs && rgbasm -o ../$@.tmp ../$<
 	rgblink -o $@.tmp2 $@.tmp
-	head -c $(if $(findstring dmg,$@)$(findstring sgb,$@), 256, 2304) $@.tmp2 > $@
+	head -c $(if $(findstring dmg,$@)$(findstring sgb,$@)$(findstring mgb,$@), 256, 2304) $@.tmp2 > $@
 	@rm $@.tmp $@.tmp2
 
 # Libretro Core (uses its own build system)
 libretro:
 	$(MAKE) -C libretro
-	
+
 # Clean
 clean:
 	rm -rf build

test.pl

@@ -0,0 +1,188 @@
+#!/usr/bin/perl
+
+# This script parses Git blame's "porcelain" output format and
+# ascertains the oldest lines of code seen.
+#
+# If you want to perform a custom report, just define your own callback
+# function and invoke parse_porcelain() with it.
+#
+# The expected input format is slightly modified from raw `git blame
+# -p`. Here is an example script for producing input:
+#
+# for f in `git ls-tree -r --name-only HEAD`; do \
+#   echo "BEGIN_RECORD $f"; \
+#   git blame -l -t -M -C -n -w -p $f; \
+#   echo "END_RECORD $f"; \
+# done
+
+use strict;
+use warnings FATAL => "all";
+
+use POSIX qw(strftime);
+
+our @STATES = qw(global header_first header_metadata);
+
+our $RE_BEGIN_RECORD = qr/^BEGIN_RECORD\s(.*)$/msx;
+our $RE_END_RECORD = qr/^END_RECORD\s(.*)$/msx;
+
+our $RE_LINE_HEADER = qr/
+  ^
+  ([a-z0-9]{40}) # SHA
+  \s(\d+)        # Original line number
+  \s(\d+)        # Current line number
+  (?:\s(\d+))?   # Number of lines in group (optional)
+  $/msx;
+
+our $RE_HEADER_METADATA = qr/^([a-z-]+)\s(.*)$/msx;
+our $RE_LINE_DATA = qr/^\t(.*)$/msx;
+
+# Parses Git blame's porcelain output.
+# Calls the supplied $onBlock callback function when a full block of
+# code has been parsed. The function receives a hashref describing the
+# block.
+sub parse_porcelain {
+  my ($fh, $onBlock) = @_;
+
+  my $state = "global";
+  my $metadata = {};
+  my @lines;
+  my ($commit, $original_line, $current_line);
+  my $current_file;
+
+  my $callOnBlock = sub {
+    my $data = {};
+    $data->{'filename'} = $current_file;
+    $data->{'lines'} = \@lines;
+    $data->{'metadata'} = $metadata;
+    $data->{'commit'} = $commit;
+
+    &$onBlock($data);
+
+    @lines = ();
+  };
+
+  while (my $line = <$fh>) {
+    chomp $line;
+
+    if ($line =~ $RE_BEGIN_RECORD) {
+      $state eq "global" or die "Parser error. Unexpected BEGIN_RECORD.";
+
+      $current_file = $1;
+      $state = "header_first";
+
+      next;
+    }
+    elsif ($line =~ $RE_END_RECORD) {
+      $1 eq $current_file or die "Parser error. END_RECORD mismatch!";
+
+      if ($onBlock and scalar(@lines)) {
+        &$callOnBlock();
+      }
+
+      $state = "global";
+      next;
+    }
+
+    if ($state eq "header_first") {
+      $line =~ $RE_LINE_HEADER or die "Invalid initial header line! $line";
+      my ($new_commit, $new_original_line, $new_current_line, $block_count);
+      ($new_commit, $new_original_line, $new_current_line, $block_count) = ($1, $2, $3, $4);
+
+      if ($block_count and $onBlock and scalar(@lines)) {
+        &$callOnBlock();
+      }
+
+      $commit = $new_commit;
+      $original_line = $new_original_line;
+      $current_line = $new_current_line;
+
+      $state = "header_metadata";
+      next;
+    }
+
+    if ($state eq "header_metadata") {
+      # Lines beginning with a tab denote line content. Subsequent line(s)
+      # will be metadata for that line.
+      if ($line =~ $RE_LINE_DATA) {
+        my $content = $1;
+
+        push @lines, [$content, $original_line, $current_line];
+        $state = "header_first";
+        next;
+      }
+
+      next if $line eq "boundary";
+
+      $line =~ $RE_HEADER_METADATA or die "Could not parse header metadata.";
+      my ($k, $v) = ($1, $2);
+
+      $metadata->{$k} = $v;
+      next;
+    }
+
+    die "Unknown state!";
+  }
+}
+
+# onBlock callback that collects oldest commit times for blocks.
+my $old_lines = {};
+sub collect_times {
+  my ($data) = @_;
+
+  # We filter non-relevant lines.
+  my $have_content = 0;
+
+  foreach my $line (@{$data->{'lines'}}) {
+    my $s = $line->[0];
+
+    # Skip empty and whitespace.
+    next if $s =~ m/^\s*$/;
+
+    # Skip things looking like comments.
+    next if $s =~ m/^\s*(#|\/\/|\/\*|\*\/)/;
+
+    if ($s =~ m/[a-z0-9]/) {
+      $have_content = 1;
+      last;
+    }
+  }
+
+  if (!$have_content) {
+    return;
+  }
+
+  my $time = $data->{'metadata'}->{'committer-time'};
+
+  my $metadata = {};
+  $metadata->{'commit'} = $data->{'commit'};
+  $metadata->{'author'} = $data->{'metadata'}->{'author'};
+  $metadata->{'filename'} = $data->{'filename'};
+  $metadata->{'lines'} = [];
+
+  foreach my $line (@{$data->{'lines'}}) {
+    push @{$metadata->{'lines'}}, $line->[2];
+  }
+
+  push @{$old_lines->{$time}}, $metadata;
+}
+
+sub print_oldest_blocks {
+  my ($times) = @_;
+
+  foreach my $time (sort { $a <=> $b } keys %$times) {
+    my $blocks = $times->{$time};
+    my $date = strftime("%Y-%m-%d %H:%M:%S", gmtime($time));
+
+    print "Time: $time ($date)\n";
+    foreach my $data (@$blocks) {
+      print "  Commit: " . $data->{'commit'} . "\n";
+      print "    Author: " . $data->{'author'} . "\n";
+      print "    Filename: " . $data->{'filename'} . "\n";
+      print "    Lines: " . join(', ', @{$data->{'lines'}}) . "\n";
+    }
+  }
+}
+
+parse_porcelain(*STDIN, \&collect_times);
+print_oldest_blocks($old_lines);
+

test.sh

@@ -0,0 +1,7 @@
+#!/bin/sh
+for f in `git ls-tree -r --name-only HEAD`; do \
+      echo "BEGIN_RECORD $f"; \
+      git blame -l -t -M -C -n -w -p "$f"; \
+      echo "END_RECORD $f"; \
+done | ./test.pl
+