From cc61fbecb9ee053341be62f08cf7846a8f5dcd71 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Felix=20Quei=C3=9Fner?= <git@mq32.de>
Date: Sat, 7 May 2016 16:59:40 +0200
Subject: [PATCH] Adds a simple program which starts at 1 GB.

---
 prototypes/program0/Makefile     |  61 +++++++++++++++++++++++++++++++
 prototypes/program0/linker.ld    |  30 +++++++++++++++
 prototypes/program0/program.c    |  11 ++++++
 prototypes/program0/program0.bin | Bin 0 -> 4144 bytes
 4 files changed, 102 insertions(+)
 create mode 100644 prototypes/program0/Makefile
 create mode 100644 prototypes/program0/linker.ld
 create mode 100644 prototypes/program0/program.c
 create mode 100644 prototypes/program0/program0.bin

diff --git a/prototypes/program0/Makefile b/prototypes/program0/Makefile
new file mode 100644
index 0000000..8165fd4
--- /dev/null
+++ b/prototypes/program0/Makefile
@@ -0,0 +1,61 @@
+
+AS=gcc
+CC=gcc
+CXX=g++
+LD=ld
+
+FLAGS = -mno-sse -DIDT_DISPATCH=$(IDT_DISPATCH) -ffreestanding -m32 -Werror -Wall -iquote include -iquote lists -O3 -g
+ASFLAGS = $(FLAGS)
+CFLAGS = $(FLAGS)	
+CXXFLAGS = $(FLAGS) -std=c++14 -fno-rtti -fno-exceptions -fno-leading-underscore -fno-use-cxa-atexit -nostdlib -fno-builtin
+
+ARTIFACT = program0.bin
+
+SRCS = $(shell find -regextype egrep -regex '.*/.*\.(cpp|S|c)')
+OBJS = $(addsuffix .o, $(notdir $(basename $(SRCS))))
+
+LIBGCC = $(shell gcc -m32 -print-libgcc-file-name)
+
+all: $(ARTIFACT)
+
+$(ARTIFACT): $(OBJS)
+	$(LD) -melf_i386 -Tlinker.ld -o $(ARTIFACT) $(addprefix obj/, $^) $(LIBGCC) 
+
+%.o: %.cpp
+	$(CXX) $(CXXFLAGS) -c -o obj/$@ $<
+  
+%.o: %.c
+	$(CC) $(ASFLAGS) -c -o obj/$@ $<
+  
+%.o: %.S
+	$(AS) $(CFLAGS) -c -o obj/$@ $<
+	
+%.o: src/%.cpp
+	$(CXX) $(CXXFLAGS) -c -o obj/$@ $<
+  
+%.o: src/%.c
+	$(CC) $(ASFLAGS) -c -o obj/$@ $<
+  
+%.o: src/%.S
+	$(AS) $(CFLAGS) -c -o obj/$@ $<
+
+# Linux/Multiboot boot specific:
+# -kernel bzImage use 'bzImage' as kernel image
+# -append cmdline use 'cmdline' as kernel command line
+# -initrd file    use 'file' as initial ram disk
+# -dtb    file    use 'file' as device tree image
+
+
+run:
+	qemu-system-i386 \
+		-kernel kernel-base.ker \
+		-m 64 \
+		-d cpu_reset,int \
+		-no-reboot \
+		-no-shutdown \
+		-serial stdio
+
+bnr: kernel-base.ker run
+
+deploy: kernel-base.ker
+	cp $(ARTIFACT) /srv/tftp/$(ARTIFACT)
\ No newline at end of file
diff --git a/prototypes/program0/linker.ld b/prototypes/program0/linker.ld
new file mode 100644
index 0000000..14ccb06
--- /dev/null
+++ b/prototypes/program0/linker.ld
@@ -0,0 +1,30 @@
+ENTRY(_start)
+OUTPUT_FORMAT(binary)
+OUTPUT_ARCH(i386:i386)
+
+SECTIONS
+{
+    . = 0x40000000;
+    .text : {
+        *(.text)
+    }
+    .data ALIGN(4096) : {
+        start_ctors = .;
+        KEEP(*( .init_array ));
+        KEEP(*(SORT_BY_INIT_PRIORITY( .init_array.* )));
+        end_ctors = .;
+
+        start_dtors = .;
+        KEEP(*( .fini_array ));
+        end_dtors = .;
+
+        *(.data)
+    }
+    .rodata ALIGN(4096) : {
+        *(.rodata)
+    }
+    .bss ALIGN(4096) : {
+        *(.bss)
+    }
+    . = ALIGN(4096);
+}
diff --git a/prototypes/program0/program.c b/prototypes/program0/program.c
new file mode 100644
index 0000000..ce530bd
--- /dev/null
+++ b/prototypes/program0/program.c
@@ -0,0 +1,11 @@
+#include <inttypes.h>
+
+uint16_t *video = (uint16_t*)0xB8000;
+
+void _start()
+{
+	for(int i = 0; i < 256; i++) {
+		video[i] = 0xF000 | i;
+	}
+	while(1);
+}
\ No newline at end of file
diff --git a/prototypes/program0/program0.bin b/prototypes/program0/program0.bin
new file mode 100644
index 0000000000000000000000000000000000000000..55034e9a15ec3231ea93faff4250e14464ac1114
GIT binary patch
literal 4144
zcmeC?We{L+Fg!4!cZ(VW5Of|&Ydpp9A+1xyvH1X_EdwJ1L+R_+|3FfsU^E0qLtr!n
zMnhmU1V%$(Gz3ONU^E0qLtr!nMnhmU1V%$(sD?lTH-iY&?Tl4H42(4#jM6+TEFHj(
SzW`8N28i#x|Nmbdss;eVlN6Ew

literal 0
HcmV?d00001