From fea670da9b394ebc58231f926396f67993e144a0 Mon Sep 17 00:00:00 2001
From: Regia König
Date: Wed, 10 Aug 2022 16:04:19 +0200
Subject: New version of HelloWorld.efi

---
 documentation/gdb commands | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'documentation')

diff --git a/documentation/gdb commands b/documentation/gdb commands
index 85bf88e..416a758 100644
--- a/documentation/gdb commands	
+++ b/documentation/gdb commands	
@@ -5,7 +5,7 @@ qemu must be started with "-s" option (shorthand for "-gdb tcp::1234")
 
 source gdbscript
 
-file MemtestEfi.efi	|| load file
+file MemtestEfi.efi	|| load file   ...no debugging symbols found...done
 info files		|| get Entry point + sections
 file			|| unload files
 
-- 
cgit v1.2.3-55-g7522


From a66320ac2c199b4b10a82b08f73346fa39029173 Mon Sep 17 00:00:00 2001
From: Regia König
Date: Thu, 11 Aug 2022 15:01:47 +0200
Subject: Documentation QEMU Monitor commands

---
 documentation/QEMU Monitor Commands | 39 +++++++++++++++++++++++++++++++++++++
 documentation/todo                  | 12 ------------
 2 files changed, 39 insertions(+), 12 deletions(-)
 create mode 100644 documentation/QEMU Monitor Commands
 delete mode 100644 documentation/todo

(limited to 'documentation')

diff --git a/documentation/QEMU Monitor Commands b/documentation/QEMU Monitor Commands
new file mode 100644
index 0000000..4fbb27e
--- /dev/null
+++ b/documentation/QEMU Monitor Commands	
@@ -0,0 +1,39 @@
+####################################################################
+####################                             ###################
+###			QEMU MONITOR COMMANDS			 ###
+####################                             ###################
+####################################################################
+
+1. START QEMU MONITOR
+
+	-	within viewer:
+		Ctrl + Alt + 2
+		exit with Ctrl + Alt + 
+
+	-	as QEMU parameter to get monitor in terminal:
+		-monitor stdio
+
+2. GET HELP
+
+	help
+	help info
+	help list
+
+3. SCROLL
+
+	Ctrl + PgUp/PgDown
+
+4. GDBSERVER
+
+	starts a remote session for the GNU debugger (gdb)
+	To connect to it from the host machine,
+	$gdb qemuKernelFile
+	target remote localhost:1234
+
+5. SHOW REGISTERS
+
+	info registers
+
+	eax = 32bit
+	rax = 64bit
+	rip = memory address of the next instruction to execute	
diff --git a/documentation/todo b/documentation/todo
deleted file mode 100644
index 5238731..0000000
--- a/documentation/todo
+++ /dev/null
@@ -1,12 +0,0 @@
-
--	gdb breakpoint
-
--	debug Symbole Memtest
-
--	AddressSanitizer
-
--	make vs make run
-
--	plugin to handle lto object
-
--	debug information by DEBUG ((---))
-- 
cgit v1.2.3-55-g7522


From 2060a0302ece8734c1f91479deb7c458f3db10b3 Mon Sep 17 00:00:00 2001
From: Regia König
Date: Thu, 11 Aug 2022 15:30:23 +0200
Subject: GDB Documentation

---
 documentation/GDB commands | 52 ++++++++++++++++++++++++++++++++++++++++++++++
 documentation/gdb commands | 19 -----------------
 2 files changed, 52 insertions(+), 19 deletions(-)
 create mode 100644 documentation/GDB commands
 delete mode 100644 documentation/gdb commands

(limited to 'documentation')

diff --git a/documentation/GDB commands b/documentation/GDB commands
new file mode 100644
index 0000000..761eeb9
--- /dev/null
+++ b/documentation/GDB commands	
@@ -0,0 +1,52 @@
+###################################################################
+######################                #############################
+###			GDB COMMANDS				###
+######################                #############################
+###################################################################
+
+1. QEMU CONFIGURATION
+
+	qemu must be started with "-s" option
+	(shorthand for "-gdb tcp::1234")
+
+
+2. GDB PART - CONNECTION
+	- source gdbscript 
+		(if a gdbscript is created, which contains
+		add-symbol-file commandos)
+
+	- target remote localhost:1234
+
+
+3. BREAKPOINTS
+
+	- b CoreHandleProtocol | or OutputString
+
+
+4. INFORMATION
+
+	- info 
+		files		|| get Entry point + sections
+		address SYM
+		all-registers	|| all registers & their contents
+		args		|| Argument variables of current stack frame
+		breakpoints
+		files		|| Names of targets & files being debugged
+		functions	|| all function names
+		locals		|| local variables of current stack frame
+		variables	|| all gloabl & static variables
+
+5. CONTROL FLOW
+
+	- c
+	- bt			|| print back_trace of all stack frames
+	- stop			|| stop program until it reaches a different source line
+
+6. FILES (perhaps not applicable when debugging with QEMU)
+
+	- file MemtestEfi.efi	|| load file   ...no debugging symbols found...done
+	- file			|| unload files
+
+7. LIST
+
+	- list			|| list specified function or line
diff --git a/documentation/gdb commands b/documentation/gdb commands
deleted file mode 100644
index 416a758..0000000
--- a/documentation/gdb commands	
+++ /dev/null
@@ -1,19 +0,0 @@
-GDB COMMANDS
-============
-
-qemu must be started with "-s" option (shorthand for "-gdb tcp::1234")
-
-source gdbscript
-
-file MemtestEfi.efi	|| load file   ...no debugging symbols found...done
-info files		|| get Entry point + sections
-file			|| unload files
-
-b CoreHandleProtocol | or OutputString
-
-target remote localhost:1234
-
-c
-bt			|| print back_trace of all stack frames
-stop			|| stop program until it reaches a different source line
-list			|| list specified function or line
-- 
cgit v1.2.3-55-g7522


From 848f0624bcdb1c1f60268852cfde5c71e07ee66a Mon Sep 17 00:00:00 2001
From: Regia König
Date: Sun, 14 Aug 2022 21:10:17 +0200
Subject: New script for running qemu and GDB documentation

---
 documentation/GDB commands          | 51 +++++++++++++++++++++++++++++--------
 documentation/QEMU Monitor Commands |  2 +-
 test_code/test.sh                   |  5 ++++
 3 files changed, 46 insertions(+), 12 deletions(-)
 create mode 100755 test_code/test.sh

(limited to 'documentation')

diff --git a/documentation/GDB commands b/documentation/GDB commands
index 761eeb9..992a6cd 100644
--- a/documentation/GDB commands	
+++ b/documentation/GDB commands	
@@ -4,49 +4,78 @@
 ######################                #############################
 ###################################################################
 
-1. QEMU CONFIGURATION
+QEMU CONFIGURATION
 
 	qemu must be started with "-s" option
 	(shorthand for "-gdb tcp::1234")
 
+#
+# GDB PART 
+#
 
-2. GDB PART - CONNECTION
+CONNECTION
 	- source gdbscript 
 		(if a gdbscript is created, which contains
 		add-symbol-file commandos)
 
 	- target remote localhost:1234
 
+DISCONNECTION
+	- detach
+		break connection with target, target resumes execution
+		GDB				Target
+		(RSP Client)			(RSP Server)
+				D
+		O------------------------------>O
+						O RSP exchange
+		O<------------------------------O
+				OK
+	-disconnect
+		Simply break connection. Target stays at the point where execution terminated previously
+		Reconnection(target remote): resume debugging at the point where the previous connection was broken
 
-3. BREAKPOINTS
+BREAKPOINTS
 
-	- b CoreHandleProtocol | or OutputString
+	- b CoreHandleProtocol 	|| or OutputString
+	- break *0x65fe447	|| set breakpoint at address
 
 
-4. INFORMATION
+INFORMATION
 
-	- info 
-		files		|| get Entry point + sections
+	- info 		
 		address SYM
+
 		all-registers	|| all registers & their contents
+
 		args		|| Argument variables of current stack frame
+		
 		breakpoints
+		
+		files		|| get Entry point + sections
 		files		|| Names of targets & files being debugged
-		functions	|| all function names
+
+		functions	|| all function names in Program
+		functions UefiMain  || show where this function occurs
+
 		locals		|| local variables of current stack frame
+
+		symbol ADDR	|| Show symbol at specified address
+
+		types [regex]	|| list all types or with regex
+
 		variables	|| all gloabl & static variables
 
-5. CONTROL FLOW
+CONTROL FLOW
 
 	- c
 	- bt			|| print back_trace of all stack frames
 	- stop			|| stop program until it reaches a different source line
 
-6. FILES (perhaps not applicable when debugging with QEMU)
+FILES (perhaps not applicable when debugging with QEMU)
 
 	- file MemtestEfi.efi	|| load file   ...no debugging symbols found...done
 	- file			|| unload files
 
-7. LIST
+LIST
 
 	- list			|| list specified function or line
diff --git a/documentation/QEMU Monitor Commands b/documentation/QEMU Monitor Commands
index 4fbb27e..bae7cf7 100644
--- a/documentation/QEMU Monitor Commands	
+++ b/documentation/QEMU Monitor Commands	
@@ -8,7 +8,7 @@
 
 	-	within viewer:
 		Ctrl + Alt + 2
-		exit with Ctrl + Alt + 
+		exit with Ctrl + Alt + 1
 
 	-	as QEMU parameter to get monitor in terminal:
 		-monitor stdio
diff --git a/test_code/test.sh b/test_code/test.sh
new file mode 100755
index 0000000..5c9ff29
--- /dev/null
+++ b/test_code/test.sh
@@ -0,0 +1,5 @@
+
+#!\bin\bash
+
+sudo qemu-system-x86_64 -s -bios ./OVMF.fd -hda fat:rw:hda-contents \
+-net none -debugcon file:debug.log -global isa-debugcon.iobase=0x402 -S
-- 
cgit v1.2.3-55-g7522


From 269455db17eb974d7ff6608666b6b68b27336088 Mon Sep 17 00:00:00 2001
From: Regia König
Date: Sun, 14 Aug 2022 21:32:00 +0200
Subject: test.sh now also has OVMF_VARS and OVMF_CODE

---
 documentation/GDB commands | 12 ++++++++++++
 test_code/test.sh          |  7 +++++--
 2 files changed, 17 insertions(+), 2 deletions(-)

(limited to 'documentation')

diff --git a/documentation/GDB commands b/documentation/GDB commands
index 992a6cd..a6db0cc 100644
--- a/documentation/GDB commands	
+++ b/documentation/GDB commands	
@@ -38,6 +38,8 @@ BREAKPOINTS
 
 	- b CoreHandleProtocol 	|| or OutputString
 	- break *0x65fe447	|| set breakpoint at address
+	- delete 2		|| delete breakpoint no 2
+	- break sampleApp.c:nn=LineNumber
 
 
 INFORMATION
@@ -79,3 +81,13 @@ FILES (perhaps not applicable when debugging with QEMU)
 LIST
 
 	- list			|| list specified function or line
+
+gdb --tui
+	- layout asm
+	- layout reg
+	- layout src
+
+	- tui enable
+	- tui disable
+
+	- next
diff --git a/test_code/test.sh b/test_code/test.sh
index 5c9ff29..63933a5 100755
--- a/test_code/test.sh
+++ b/test_code/test.sh
@@ -1,5 +1,8 @@
 
 #!\bin\bash
 
-sudo qemu-system-x86_64 -s -bios ./OVMF.fd -hda fat:rw:hda-contents \
--net none -debugcon file:debug.log -global isa-debugcon.iobase=0x402 -S
+sudo qemu-system-x86_64 -s -bios ./OVMF.fd \
+	-hda fat:rw:hda-contents \
+	-drive if=pflash,format=raw,readonly,file=OVMF_CODE.fd \
+	-drive if=pflash,format=raw,file=OVMF_VARS.fd \
+	-net none -debugcon file:debug.log -global isa-debugcon.iobase=0x402 -S
-- 
cgit v1.2.3-55-g7522


From c74fca5e3c4ff12865c57ba83702ae6586fa45a8 Mon Sep 17 00:00:00 2001
From: Regia König
Date: Mon, 15 Aug 2022 17:09:30 +0200
Subject: More documentation

---
 documentation/DEBUG statement   | 10 ++++++++++
 documentation/Debugging in Qemu | 41 +++++++++++++++++++++++++++++++++++++++++
 documentation/GDB commands      |  7 ++++++-
 documentation/debug statement   |  1 -
 documentation/debugcon          | 11 +++++++++++
 5 files changed, 68 insertions(+), 2 deletions(-)
 create mode 100644 documentation/DEBUG statement
 create mode 100644 documentation/Debugging in Qemu
 delete mode 100644 documentation/debug statement
 create mode 100644 documentation/debugcon

(limited to 'documentation')

diff --git a/documentation/DEBUG statement b/documentation/DEBUG statement
new file mode 100644
index 0000000..eb110ff
--- /dev/null
+++ b/documentation/DEBUG statement	
@@ -0,0 +1,10 @@
+
+Library to include:
+#include "Library/DebugLib.h"
+
+DEBUG (("%a: %d\n", _FUNCTION_, _LINE_));
+
+example:
+
+DEBUG((EFI_D_INFO, "My Entry Point: 0x%08x\r\n",(CHAR16*)UefiMain));
+
diff --git a/documentation/Debugging in Qemu b/documentation/Debugging in Qemu
new file mode 100644
index 0000000..6d43b3e
--- /dev/null
+++ b/documentation/Debugging in Qemu	
@@ -0,0 +1,41 @@
+#########################################
+#					#
+#	Ways to debug in Qemu		#
+#					#
+#########################################
+
+DEBUGCON
+###############
+
+-debugcon file:debug.log -global isa-debugcon.iobase=0x402
+
+SERIAL
+###############
+
+-serial stdio
+	redirects the virtual serial port to the host's terminal i/o
+
+TRACE
+###############
+
+-D ./qemu_log.txt
+-d guest_errors, nochain, exec, in_asm, out_asm, op, op_opt, op_ind, int, cpu, mmu, pcall, cpu_reset, unimp, page
+
+--trace "memory_region*"
+
+MONITOR
+###############
+
+-monitor stdio
+
+or
+
+Ctrl + Alt + 2 (Exit with Ctrl + Alt + 1)
+
+GDB - GNU DEBUGGER
+#####################
+
+-s -S (when starting qemu)
+
+(gdb) target remote localhost:1234
+(gdb) c
diff --git a/documentation/GDB commands b/documentation/GDB commands
index a6db0cc..64ea1b8 100644
--- a/documentation/GDB commands	
+++ b/documentation/GDB commands	
@@ -13,6 +13,10 @@ QEMU CONFIGURATION
 # GDB PART 
 #
 
+SYMBOL FILES
+	add-symbol-file Hello.debug 0x... -s .data 0x...
+
+
 CONNECTION
 	- source gdbscript 
 		(if a gdbscript is created, which contains
@@ -69,7 +73,8 @@ INFORMATION
 
 CONTROL FLOW
 
-	- c
+	- c			|| continue
+	- next			|| move only one step forward
 	- bt			|| print back_trace of all stack frames
 	- stop			|| stop program until it reaches a different source line
 
diff --git a/documentation/debug statement b/documentation/debug statement
deleted file mode 100644
index a8e192c..0000000
--- a/documentation/debug statement	
+++ /dev/null
@@ -1 +0,0 @@
-DEBUG (("%a: %d\n", _FUNCTION_, _LINE_));
diff --git a/documentation/debugcon b/documentation/debugcon
new file mode 100644
index 0000000..5d914f5
--- /dev/null
+++ b/documentation/debugcon
@@ -0,0 +1,11 @@
+#########################
+#			#
+#	DEBUGCON	#
+#			#
+#########################
+
+for debug already in early bootphases
+One can connect the I/O port to either a file or a device, like /dev/stdout
+	- debugcon /dev/stdout	(terminal that started Qemu process)
+	- debugcon file:qemu/debug.log (or other file name)
+
-- 
cgit v1.2.3-55-g7522


From 942dc01a998f8e60f57c8816264b16f4117da266 Mon Sep 17 00:00:00 2001
From: Regia König
Date: Tue, 16 Aug 2022 11:33:08 +0200
Subject: Reorder GDB commands

---
 documentation/GDB commands | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

(limited to 'documentation')

diff --git a/documentation/GDB commands b/documentation/GDB commands
index 64ea1b8..3316a38 100644
--- a/documentation/GDB commands	
+++ b/documentation/GDB commands	
@@ -49,11 +49,10 @@ BREAKPOINTS
 INFORMATION
 
 	- info 		
-		address SYM
+		address SYM	|| Get address for symbol SYM
+		symbol ADDR	|| Show symbol at specified address
 
 		all-registers	|| all registers & their contents
-
-		args		|| Argument variables of current stack frame
 		
 		breakpoints
 		
@@ -63,14 +62,15 @@ INFORMATION
 		functions	|| all function names in Program
 		functions UefiMain  || show where this function occurs
 
-		locals		|| local variables of current stack frame
-
-		symbol ADDR	|| Show symbol at specified address
+		line
 
 		types [regex]	|| list all types or with regex
 
+		args		|| Argument variables of current stack frame
+		locals		|| local variables of current stack frame
 		variables	|| all gloabl & static variables
 
+
 CONTROL FLOW
 
 	- c			|| continue
-- 
cgit v1.2.3-55-g7522


From 5e97f0a420d0ae8e92332911de99ad642d5ae005 Mon Sep 17 00:00:00 2001
From: Regia König
Date: Tue, 16 Aug 2022 12:05:41 +0200
Subject: New documentation file to how to create a HelloWorl.efi with GNU-efi

---
 documentation/GNU-efi | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 documentation/GNU-efi

(limited to 'documentation')

diff --git a/documentation/GNU-efi b/documentation/GNU-efi
new file mode 100644
index 0000000..7fb0f1f
--- /dev/null
+++ b/documentation/GNU-efi
@@ -0,0 +1,5 @@
+##################################################################
+##								##
+##		BUILDING HELLOWORLD.EFI WIH GNU-EFI		##	
+##								##
+##################################################################
-- 
cgit v1.2.3-55-g7522


From df931e3b4bc07ac752ab92075dfffc32bde5f50e Mon Sep 17 00:00:00 2001
From: Regia König
Date: Tue, 16 Aug 2022 12:56:08 +0200
Subject: Minimal working example with GNU-efi

---
 GNU_efi_HelloWorld/.gitignore |   1 +
 GNU_efi_HelloWorld/Makefile   |   9 ++--
 GNU_efi_HelloWorld/hello.c    |   1 +
 GNU_efi_HelloWorld/hello.efi  | Bin 0 -> 45555 bytes
 GNU_efi_HelloWorld/hello.o    | Bin 1696 -> 1664 bytes
 GNU_efi_HelloWorld/hello.so   | Bin 0 -> 2170968 bytes
 documentation/GNU-efi         | 111 ++++++++++++++++++++++++++++++++++++++++--
 test_code/OVMF_VARS.fd        | Bin 540672 -> 540672 bytes
 8 files changed, 112 insertions(+), 10 deletions(-)
 create mode 100644 GNU_efi_HelloWorld/.gitignore
 create mode 100755 GNU_efi_HelloWorld/hello.efi
 create mode 100755 GNU_efi_HelloWorld/hello.so

(limited to 'documentation')

diff --git a/GNU_efi_HelloWorld/.gitignore b/GNU_efi_HelloWorld/.gitignore
new file mode 100644
index 0000000..ca4663b
--- /dev/null
+++ b/GNU_efi_HelloWorld/.gitignore
@@ -0,0 +1 @@
+gnu-efi
diff --git a/GNU_efi_HelloWorld/Makefile b/GNU_efi_HelloWorld/Makefile
index 4f00d4a..31195ee 100644
--- a/GNU_efi_HelloWorld/Makefile
+++ b/GNU_efi_HelloWorld/Makefile
@@ -1,12 +1,11 @@
 ARCH		= $(shell uname -m | sed s,i[3456789]86,ia32,)
 
-OBJS		= main.o
+OBJS		= hello.o
 TARGET		= hello.efi
 
 EFIINC		= /usr/include/efi
-EFFINCS		= -I$(EFFINC) -I$(EFIINC)/$(ARCH) -I$(EFIINC)/protocol
-LIB		= /usr/lib64
-EFILIB		= /usr/lib64/gnuefi
+EFFINCS		= -I$(EFIINC) -I$(EFIINC)/$(ARCH) -I$(EFIINC)/protocol
+EFILIB		= /usr/lib
 EFI_CRT_OBJS	= $(EFILIB)/crt0-efi-$(ARCH).o
 EFI_LDS		= $(EFILIB)/elf_$(ARCH)_efi.lds
 
@@ -18,7 +17,7 @@ ifeq ($(ARCH),x86_64)
 endif
 
 LDFLAGS		= -nostdlib -znocombreloc -T $(EFI_LDS) -shared \
-			-Bsymbolic -L $(EFILIB) -L $(LIB) $(EFI_CRT_OBJS)
+			-Bsymbolic -L $(EFILIB) $(EFI_CRT_OBJS)
 
 all: $(TARGET)
 
diff --git a/GNU_efi_HelloWorld/hello.c b/GNU_efi_HelloWorld/hello.c
index 26cbd42..52c05b3 100644
--- a/GNU_efi_HelloWorld/hello.c
+++ b/GNU_efi_HelloWorld/hello.c
@@ -4,6 +4,7 @@
 EFI_STATUS
 EFIAPI
 efi_main (EFI_HANDLE ImageHandle, EFI_SYSTEM_TABLE *SystemTable) {
+
 	InitializeLib(ImageHandle, SystemTable);
 	Print(L"Hello, world!\n");
 
diff --git a/GNU_efi_HelloWorld/hello.efi b/GNU_efi_HelloWorld/hello.efi
new file mode 100755
index 0000000..27145e5
Binary files /dev/null and b/GNU_efi_HelloWorld/hello.efi differ
diff --git a/GNU_efi_HelloWorld/hello.o b/GNU_efi_HelloWorld/hello.o
index 6e14a71..22a8362 100644
Binary files a/GNU_efi_HelloWorld/hello.o and b/GNU_efi_HelloWorld/hello.o differ
diff --git a/GNU_efi_HelloWorld/hello.so b/GNU_efi_HelloWorld/hello.so
new file mode 100755
index 0000000..bc418e3
Binary files /dev/null and b/GNU_efi_HelloWorld/hello.so differ
diff --git a/documentation/GNU-efi b/documentation/GNU-efi
index 7fb0f1f..8dddc4a 100644
--- a/documentation/GNU-efi
+++ b/documentation/GNU-efi
@@ -1,5 +1,106 @@
-##################################################################
-##								##
-##		BUILDING HELLOWORLD.EFI WIH GNU-EFI		##	
-##								##
-##################################################################
+##################################################################################
+##										##
+##		BUILDING HELLOWORLD.EFI WIH GNU-EFI				##	
+##										##
+##################################################################################
+
+#################################################################################
+#				SUMMARY						#
+#################################################################################
+
+Minimal working example:
+
+	hello.c
+---------------------------------------------------------------------------------
+#include <efi.h>
+#include <efilib.h>
+
+EFI_STATUS
+EFIAPI
+efi_main (EFI_HANDLE ImageHandle, EFI_SYSTEM_TABLE *SystemTable) {
+
+    InitializeLib(ImageHandle, SystemTable);
+    Print(L"Hello, world!\n");
+
+    return EFI_SUCCESS;
+}
+
+
+Makefile
+--------------------------------------------------------------------------------
+ARCH        = $(shell uname -m | sed s,i[3456789]86,ia32,)
+
+OBJS        = hello.o
+TARGET        = hello.efi
+
+EFIINC        = /usr/include/efi
+EFFINCS        = -I$(EFIINC) -I$(EFIINC)/$(ARCH) -I$(EFIINC)/protocol
+EFILIB        = /usr/lib
+EFI_CRT_OBJS    = $(EFILIB)/crt0-efi-$(ARCH).o
+EFI_LDS        = $(EFILIB)/elf_$(ARCH)_efi.lds
+
+CFLAGS        = $(EFFINCS) -fno-stack-protector -fpic \
+            -fshort-wchar -mno-red-zone -Wall
+
+ifeq ($(ARCH),x86_64)
+    CFLAGS += -DEFI_FUNCTION_WRAPPER
+endif
+
+LDFLAGS        = -nostdlib -znocombreloc -T $(EFI_LDS) -shared \
+            -Bsymbolic -L $(EFILIB) $(EFI_CRT_OBJS)
+
+all: $(TARGET)
+
+hello.so: $(OBJS)
+    ld $(LDFLAGS) $(OBJS) -o $@ -lefi -lgnuefi
+
+%.efi: %.so
+    objcopy -j .text -j .sdata -j .data -j .dynamic \
+    -j .dynsym -j .rel -j .rela -j .reloc \
+    --target=efi-app-$(ARCH) $^ $@
+
+
+
+
+#################################################################################
+#		https://wiki.osdev.org/GNU-EFI					# 
+#################################################################################
+
+GNU-EFI is a very lightweight developing environment to create UEFI applications.
+It is a set of libraries and headers for compiling UEFI applications with a
+system's native GCC.
+
+You can use host native compiler, then convert resulting ELF into UEFI-compatible
+PE.
+	OR
+Use GCC Cross-Compiler generating PE directly.
+
+*********************************************************************************
+* $ git clone https://git.code.sf.net/p/gnu-efi/code gnu-efi			*
+* $ cd gnu-efi									*
+* $ make									*
+*********************************************************************************
+
+This should create
+* crt0-efi-x86_64.o:
+	A CRT0 (C runtime initialization code) that will call the 
+	"efi_main" function
+
+* libgnuefi.a:
+	A library containing a single function (_relocate)
+	that is used by the CRT0
+
+* (optional) libefi.a:
+	A library containing convenience functions like CRC computation, string
+	length calculation, and easy text printing
+
+HEADERS can be used from:
+* /usr/include/efi   (updated to the latest)
+* from EDK2 package
+* Or from gnu-efi/inc
+
+LINKER SCRIPT:
+* gnu-efi/gnuefi/elf_x86_64_efi.lds
+	OR
+* /usr/lib/elf_x86_64_efi.lds
+
diff --git a/test_code/OVMF_VARS.fd b/test_code/OVMF_VARS.fd
index a7fab53..9883b80 100644
Binary files a/test_code/OVMF_VARS.fd and b/test_code/OVMF_VARS.fd differ
-- 
cgit v1.2.3-55-g7522


From af267979164d1bb9f412705e22fc64ab00b7d899 Mon Sep 17 00:00:00 2001
From: Regia König
Date: Tue, 16 Aug 2022 16:20:17 +0200
Subject: More documentation on GNU-efi

---
 documentation/GNU-efi | 69 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)

(limited to 'documentation')

diff --git a/documentation/GNU-efi b/documentation/GNU-efi
index 8dddc4a..bb22b9e 100644
--- a/documentation/GNU-efi
+++ b/documentation/GNU-efi
@@ -104,3 +104,72 @@ LINKER SCRIPT:
 	OR
 * /usr/lib/elf_x86_64_efi.lds
 
+COMPILATION:
+$ gcc
+	-Ignu-efi-dir/inc		||	set this to the efi headers directory
+
+	-fpic				||	UEFI PE executable must be relocatable
+
+	-ffreestanding			||	there's no hosted gcc environment,
+						we don't have libc
+	-fno-stack-protector		=	
+	-fno-stack-check		||	stack must be strictly used,
+					||	no additional canaries or
+					||	pre-allocated local variable
+					||	space allowed
+	-mno-red-zone			=
+
+	-fshort-wchar			||	It is very important that UEFI
+					||	uses 16bit characters
+					||	(wide-characters or wchar_t,
+					||	defined as CHAR16 in efi headers
+
+	-maccumulate-outgoing-args	|| 	function calls must include the
+					||	number of argumnets passed to the
+					|| 	functions
+
+	-c main.c -o main.o
+
+LINKING:
+$ ld 	-shared -Bsymbolic -Lgnu-efi-dir/x86_64/lib -Lgnu-efi-dir/x86_64/gnuefi \
+	-Tgnu-efi-dir/gnuefi/elf_x86_64_efi.lds \
+	gnu-efi-dir/x86_64/gnuefi/crt0-efi-x86_64.o \
+	main.o -o main.so -lgnuefi -lefi
+
+	-shared -Bsymbolic		|| tell GNU ld to create so (shared library)
+
+	-L and -T			|| Where to find the static GNU-EFI libraries
+					|| (.a) and the linker script
+
+	.o				|| it is important to specify crt0 as the
+					|| first. Should work as the last too, but
+					|| some had problems
+
+	-l				|| linking with gnuefi is a must, as that 
+					|| contains the relocation code. Linking
+					|| with efi is optional, but recommended
+
+CONVERT CHARED OBJECT TO EFI EXECUTABLE
+$ objcopy -j .text -j .sdata -j .data -j .dynamic -j .dynsym -j .rel -j .rela -j .rel.*
+	-j .rela.* -j .reloc --target efi-app-x86_64 --subsystem=10 main.so main.efi
+
+	-j				|| which sections to keep during convertion
+
+	--target efi-app-x86_64		|| tells objcop to generate a PE32+ format,
+					|| with architecture code 0x8664
+
+	--subsystem=10:			|| most important. Sets file type to UEFI
+					|| executable in the PE header
+
+Now you can copy main.efi to your EFI System Partition, and after boot run it
+from the EFI Shell. Or you can rename it to EFI\BOOT\BOOTX64.EFI and it should
+be executed automatically on boot. 
+
+
+
+
+
+
+
+
+
-- 
cgit v1.2.3-55-g7522


From d46d26a260f5882b2559949aa43e8fb47bd16a7e Mon Sep 17 00:00:00 2001
From: Regia König
Date: Tue, 16 Aug 2022 16:37:50 +0200
Subject: New script to analyze efi executable

---
 GNU_efi_HelloWorld/analyse_hello.sh |   8 ++++++++
 GNU_efi_HelloWorld/hello.c          |   3 +++
 GNU_efi_HelloWorld/peinfo           | Bin 0 -> 27600 bytes
 documentation/GNU-efi               |   9 +++++++++
 4 files changed, 20 insertions(+)
 create mode 100755 GNU_efi_HelloWorld/analyse_hello.sh
 create mode 100755 GNU_efi_HelloWorld/peinfo

(limited to 'documentation')

diff --git a/GNU_efi_HelloWorld/analyse_hello.sh b/GNU_efi_HelloWorld/analyse_hello.sh
new file mode 100755
index 0000000..cfaad73
--- /dev/null
+++ b/GNU_efi_HelloWorld/analyse_hello.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+echo "objdump -h hello.efi"
+objdump -h hello.efi
+
+echo "########################################################################"
+echo "peinfo hello.efi | grep text -A 5"
+peinfo hello.efi | grep text -A 5
diff --git a/GNU_efi_HelloWorld/hello.c b/GNU_efi_HelloWorld/hello.c
index 52c05b3..817c135 100644
--- a/GNU_efi_HelloWorld/hello.c
+++ b/GNU_efi_HelloWorld/hello.c
@@ -8,5 +8,8 @@ efi_main (EFI_HANDLE ImageHandle, EFI_SYSTEM_TABLE *SystemTable) {
 	InitializeLib(ImageHandle, SystemTable);
 	Print(L"Hello, world!\n");
 
+	// TODO: get SystemTable-> ... -> ImageBase
+	// Print ImageBase
+
 	return EFI_SUCCESS;
 }
diff --git a/GNU_efi_HelloWorld/peinfo b/GNU_efi_HelloWorld/peinfo
new file mode 100755
index 0000000..4645ea4
Binary files /dev/null and b/GNU_efi_HelloWorld/peinfo differ
diff --git a/documentation/GNU-efi b/documentation/GNU-efi
index bb22b9e..63097fe 100644
--- a/documentation/GNU-efi
+++ b/documentation/GNU-efi
@@ -166,8 +166,17 @@ from the EFI Shell. Or you can rename it to EFI\BOOT\BOOTX64.EFI and it should
 be executed automatically on boot. 
 
 
+LIBEFI.A
 
+Has wrappers for the most common UEFI functions, but you might need to call
+something not covered. For completeness, it provides:
 
+uefi_call_wrapper(func, numarg, ...);
+
+For example, the "Print" function used in our main.c and which accepts printf
+compatible arguments, is under the hood nothing else than a call to:
+
+uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, buffer);
 
 
 
-- 
cgit v1.2.3-55-g7522


From 2e92efaf304e20d573e6b1ce1820adaf4052088f Mon Sep 17 00:00:00 2001
From: Regia König
Date: Tue, 16 Aug 2022 16:42:14 +0200
Subject: Documentation GNU-efi

---
 documentation/GNU-efi | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'documentation')

diff --git a/documentation/GNU-efi b/documentation/GNU-efi
index 63097fe..27c77e3 100644
--- a/documentation/GNU-efi
+++ b/documentation/GNU-efi
@@ -178,6 +178,12 @@ compatible arguments, is under the hood nothing else than a call to:
 
 uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, buffer);
 
+The biggest advantage of 'uefi_call_wrapper_ is that doesn't matter what ABI
+your gcc is using, it will always correctly translate thet into UEFI ABI. If,
+and only if you've used the correct gcc options, then you should be able to
+make the same call as:
+
+ST->ConOut->OutputString(ST->ConOut, buffer);
 
 
 
-- 
cgit v1.2.3-55-g7522


From 3e6d1f5389cb77055e3860c801dbcc99bb4518ec Mon Sep 17 00:00:00 2001
From: Regia König
Date: Tue, 16 Aug 2022 16:54:09 +0200
Subject: Efi file outputs own image base

---
 GNU_efi_HelloWorld/analyse_hello.sh |   2 +-
 GNU_efi_HelloWorld/hello.c          |  21 +++++++++++++++++++--
 GNU_efi_HelloWorld/hello.efi        | Bin 45555 -> 46888 bytes
 GNU_efi_HelloWorld/hello.o          | Bin 1664 -> 2112 bytes
 GNU_efi_HelloWorld/hello.so         | Bin 2170968 -> 2171456 bytes
 documentation/GNU-efi               |   4 +++-
 test_code/OVMF_VARS.fd              | Bin 540672 -> 540672 bytes
 7 files changed, 23 insertions(+), 4 deletions(-)

(limited to 'documentation')

diff --git a/GNU_efi_HelloWorld/analyse_hello.sh b/GNU_efi_HelloWorld/analyse_hello.sh
index cfaad73..c8b3103 100755
--- a/GNU_efi_HelloWorld/analyse_hello.sh
+++ b/GNU_efi_HelloWorld/analyse_hello.sh
@@ -5,4 +5,4 @@ objdump -h hello.efi
 
 echo "########################################################################"
 echo "peinfo hello.efi | grep text -A 5"
-peinfo hello.efi | grep text -A 5
+./peinfo hello.efi | grep text -A 5
diff --git a/GNU_efi_HelloWorld/hello.c b/GNU_efi_HelloWorld/hello.c
index 817c135..171db1e 100644
--- a/GNU_efi_HelloWorld/hello.c
+++ b/GNU_efi_HelloWorld/hello.c
@@ -5,11 +5,28 @@ EFI_STATUS
 EFIAPI
 efi_main (EFI_HANDLE ImageHandle, EFI_SYSTEM_TABLE *SystemTable) {
 
+	EFI_LOADED_IMAGE *loaded_image = NULL;
+	EFI_STATUS status;
+
 	InitializeLib(ImageHandle, SystemTable);
 	Print(L"Hello, world!\n");
 
-	// TODO: get SystemTable-> ... -> ImageBase
-	// Print ImageBase
+	status = uefi_call_wrapper(SystemTable->BootServices->HandleProtocol,
+					3,
+					ImageHandle,
+					&LoadedImageProtocol,
+					(void **)&loaded_image);
+
+	if (EFI_ERROR(status)) {
+		Print(L"handleprotocol: %r\n", status);
+	}
+
+	Print(L"Image base: 0x%lx\n", loaded_image->ImageBase);
+
+	int wait = 1;
+	while(wait) {
+		__asm__ __volatile__("pause");
+	}
 
 	return EFI_SUCCESS;
 }
diff --git a/GNU_efi_HelloWorld/hello.efi b/GNU_efi_HelloWorld/hello.efi
index 27145e5..c8399c0 100755
Binary files a/GNU_efi_HelloWorld/hello.efi and b/GNU_efi_HelloWorld/hello.efi differ
diff --git a/GNU_efi_HelloWorld/hello.o b/GNU_efi_HelloWorld/hello.o
index 22a8362..21583fe 100644
Binary files a/GNU_efi_HelloWorld/hello.o and b/GNU_efi_HelloWorld/hello.o differ
diff --git a/GNU_efi_HelloWorld/hello.so b/GNU_efi_HelloWorld/hello.so
index bc418e3..b64f729 100755
Binary files a/GNU_efi_HelloWorld/hello.so and b/GNU_efi_HelloWorld/hello.so differ
diff --git a/documentation/GNU-efi b/documentation/GNU-efi
index 27c77e3..5d75960 100644
--- a/documentation/GNU-efi
+++ b/documentation/GNU-efi
@@ -186,5 +186,7 @@ make the same call as:
 ST->ConOut->OutputString(ST->ConOut, buffer);
 
 
-
+#################################################################################
+#	https://wiki.osdev.org/Debugging_UEFI_applications_with_GDB		#
+#################################################################################
 
diff --git a/test_code/OVMF_VARS.fd b/test_code/OVMF_VARS.fd
index 9883b80..852d584 100644
Binary files a/test_code/OVMF_VARS.fd and b/test_code/OVMF_VARS.fd differ
-- 
cgit v1.2.3-55-g7522


From bc78d650cfe0b759a48afba17686671ac67c9387 Mon Sep 17 00:00:00 2001
From: Regia König
Date: Wed, 17 Aug 2022 10:49:27 +0200
Subject: Expand analyzation script

---
 GNU_efi_HelloWorld/Makefile         |   1 +
 GNU_efi_HelloWorld/analyse_hello.sh |   8 --------
 GNU_efi_HelloWorld/hello.c          |   5 ++++-
 GNU_efi_HelloWorld/hello.efi        | Bin 46888 -> 46888 bytes
 GNU_efi_HelloWorld/hello.o          | Bin 2112 -> 2112 bytes
 GNU_efi_HelloWorld/hello.so         | Bin 2171456 -> 2171456 bytes
 documentation/GDB commands          |   2 ++
 test_code/OVMF_VARS.fd              | Bin 540672 -> 540672 bytes
 test_code/analyse_hello.sh          |  13 +++++++++++++
 9 files changed, 20 insertions(+), 9 deletions(-)
 delete mode 100755 GNU_efi_HelloWorld/analyse_hello.sh
 create mode 100755 test_code/analyse_hello.sh

(limited to 'documentation')

diff --git a/GNU_efi_HelloWorld/Makefile b/GNU_efi_HelloWorld/Makefile
index 31195ee..448e3f7 100644
--- a/GNU_efi_HelloWorld/Makefile
+++ b/GNU_efi_HelloWorld/Makefile
@@ -20,6 +20,7 @@ LDFLAGS		= -nostdlib -znocombreloc -T $(EFI_LDS) -shared \
 			-Bsymbolic -L $(EFILIB) $(EFI_CRT_OBJS)
 
 all: $(TARGET)
+	cp hello.efi ../test_code/hda-contents/
 
 hello.so: $(OBJS)
 	ld $(LDFLAGS) $(OBJS) -o $@ -lefi -lgnuefi
diff --git a/GNU_efi_HelloWorld/analyse_hello.sh b/GNU_efi_HelloWorld/analyse_hello.sh
deleted file mode 100755
index c8b3103..0000000
--- a/GNU_efi_HelloWorld/analyse_hello.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/bin/bash
-
-echo "objdump -h hello.efi"
-objdump -h hello.efi
-
-echo "########################################################################"
-echo "peinfo hello.efi | grep text -A 5"
-./peinfo hello.efi | grep text -A 5
diff --git a/GNU_efi_HelloWorld/hello.c b/GNU_efi_HelloWorld/hello.c
index 171db1e..f40df6e 100644
--- a/GNU_efi_HelloWorld/hello.c
+++ b/GNU_efi_HelloWorld/hello.c
@@ -1,5 +1,6 @@
 #include <efi.h>
 #include <efilib.h>
+#include <efidebug.h>
 
 EFI_STATUS
 EFIAPI
@@ -23,7 +24,9 @@ efi_main (EFI_HANDLE ImageHandle, EFI_SYSTEM_TABLE *SystemTable) {
 
 	Print(L"Image base: 0x%lx\n", loaded_image->ImageBase);
 
-	int wait = 1;
+	DEBUG((D_ERROR, "AllocatePool: out of pool  %x\n", status));
+
+	volatile int wait = 1;
 	while(wait) {
 		__asm__ __volatile__("pause");
 	}
diff --git a/GNU_efi_HelloWorld/hello.efi b/GNU_efi_HelloWorld/hello.efi
index c8399c0..f8ea7e2 100755
Binary files a/GNU_efi_HelloWorld/hello.efi and b/GNU_efi_HelloWorld/hello.efi differ
diff --git a/GNU_efi_HelloWorld/hello.o b/GNU_efi_HelloWorld/hello.o
index 21583fe..37f6971 100644
Binary files a/GNU_efi_HelloWorld/hello.o and b/GNU_efi_HelloWorld/hello.o differ
diff --git a/GNU_efi_HelloWorld/hello.so b/GNU_efi_HelloWorld/hello.so
index b64f729..089f3f7 100755
Binary files a/GNU_efi_HelloWorld/hello.so and b/GNU_efi_HelloWorld/hello.so differ
diff --git a/documentation/GDB commands b/documentation/GDB commands
index 3316a38..1cbd2ac 100644
--- a/documentation/GDB commands	
+++ b/documentation/GDB commands	
@@ -96,3 +96,5 @@ gdb --tui
 	- tui disable
 
 	- next
+
+	- ctrl+x o		|| change active window
diff --git a/test_code/OVMF_VARS.fd b/test_code/OVMF_VARS.fd
index 852d584..d1888bc 100644
Binary files a/test_code/OVMF_VARS.fd and b/test_code/OVMF_VARS.fd differ
diff --git a/test_code/analyse_hello.sh b/test_code/analyse_hello.sh
new file mode 100755
index 0000000..2e9187f
--- /dev/null
+++ b/test_code/analyse_hello.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+
+echo "#### \$objdump -h hello.efi"
+objdump -h hda-contents/hello.efi
+
+echo "########################################################################"
+echo "#### \$peinfo hello.efi | grep text -A 5"
+./peinfo hda-contents/hello.efi | grep text -A 5
+
+
+echo "########################################################################"
+echo "#### \$cat debug.log | grep hello -A 5"
+cat debug.log | grep hello -A 5
-- 
cgit v1.2.3-55-g7522


From 0b7cb74a17a6eea07b2d9319db33ec3332db0216 Mon Sep 17 00:00:00 2001
From: Regia König
Date: Wed, 17 Aug 2022 11:50:55 +0200
Subject: Save old Makefile version without debug, but running

---
 GNU_efi_HelloWorld/Makefile_save | 36 ++++++++++++++++++++++++++++++++++++
 documentation/GNU-efi            | 36 ++++++++++++++++++++++++++++++++++++
 2 files changed, 72 insertions(+)
 create mode 100644 GNU_efi_HelloWorld/Makefile_save

(limited to 'documentation')

diff --git a/GNU_efi_HelloWorld/Makefile_save b/GNU_efi_HelloWorld/Makefile_save
new file mode 100644
index 0000000..6ae963d
--- /dev/null
+++ b/GNU_efi_HelloWorld/Makefile_save
@@ -0,0 +1,36 @@
+ARCH		= $(shell uname -m | sed s,i[3456789]86,ia32,)
+
+OBJS		= hello.o
+TARGET		= hello.efi
+
+EFIINC		= /usr/include/efi
+EFFINCS		= -I$(EFIINC) -I$(EFIINC)/$(ARCH) -I$(EFIINC)/protocol
+EFILIB		= /usr/lib
+EFI_CRT_OBJS	= $(EFILIB)/crt0-efi-$(ARCH).o
+EFI_LDS		= $(EFILIB)/elf_$(ARCH)_efi.lds
+
+CFLAGS		= $(EFFINCS) -fno-stack-protector -fpic \
+			-fshort-wchar -mno-red-zone -Wall
+
+ifeq ($(ARCH),x86_64)
+	CFLAGS += -DEFI_FUNCTION_WRAPPER
+endif
+
+LDFLAGS		= -nostdlib -znocombreloc -T $(EFI_LDS) -shared \
+			-Bsymbolic -L $(EFILIB) $(EFI_CRT_OBJS)
+
+all: $(TARGET)
+	cp hello.efi ../test_code/hda-contents/
+
+hello.so: $(OBJS)
+	ld $(LDFLAGS) $(OBJS) -o $@ -lefi -lgnuefi
+
+%.efi: %.so
+	objcopy -j .text -j .sdata -j .data -j .dynamic \
+	-j .dynsym -j .rel -j .rela -j .reloc \
+	--target=efi-app-$(ARCH) $^ $@
+
+clear:
+	rm *.efi
+	rm *.o
+	rm *.so
diff --git a/documentation/GNU-efi b/documentation/GNU-efi
index 5d75960..1efe81c 100644
--- a/documentation/GNU-efi
+++ b/documentation/GNU-efi
@@ -190,3 +190,39 @@ ST->ConOut->OutputString(ST->ConOut, buffer);
 #	https://wiki.osdev.org/Debugging_UEFI_applications_with_GDB		#
 #################################################################################
 
+Makefile at:
+https://sourceforge.net/p/ast-phoenix/code/ci/master/tree/kernel/boot/Makefile#l72
+
+EFI firmware is unable to launch binaries with debug sections. What you need is
+to create two EFI binaries - one with only required sections to upload it to
+target system and another one with debug symbols to use with GDB. Actually you 
+just need to run objcopy utility twice with different set of sections to copy and
+different output files. (See Makefile example)
+
+To load image with symbols to relocated addresses for .text and .data sections,
+you need to add ImageBase address to their offsets:
+
+*********************************************************************************
+* # gdb hello.efi								*
+* (gdb) info files								*
+* ...										*
+* Entry point: 0x3000								*
+* 3000 - ... is .text								*
+* c00 - ... is .data								*
+* (gdb) file			|| unload file					*
+* add-symbol-table hello.efi (ImageBase+text-off) -s .data (ImageBase+data-off)	*
+*********************************************************************************
+
+
+
+
+
+
+
+
+
+
+
+
+
+
-- 
cgit v1.2.3-55-g7522


From b6292481be3cd4e9855ad40e3e4f87679a4a6c47 Mon Sep 17 00:00:00 2001
From: Regia König
Date: Wed, 17 Aug 2022 15:36:55 +0200
Subject: Subtask 'hello.efi with gdb' completed

---
 GNU_efi_HelloWorld/Makefile            |  28 ++++++----
 GNU_efi_HelloWorld/example_Makefile    |  96 +++++++++++++++++++++++++++++++++
 GNU_efi_HelloWorld/hello.c             |   1 -
 GNU_efi_HelloWorld/hello.debug         | Bin 0 -> 123240 bytes
 GNU_efi_HelloWorld/hello.efi           | Bin 46888 -> 46888 bytes
 documentation/GDB commands             |  22 +++++++-
 documentation/GNU-efi                  |  77 ++++++++++++++++++++++++--
 documentation/gdb with efi application |   0
 test_code/OVMF_VARS.fd                 | Bin 540672 -> 540672 bytes
 9 files changed, 210 insertions(+), 14 deletions(-)
 create mode 100644 GNU_efi_HelloWorld/example_Makefile
 create mode 100755 GNU_efi_HelloWorld/hello.debug
 delete mode 100644 documentation/gdb with efi application

(limited to 'documentation')

diff --git a/GNU_efi_HelloWorld/Makefile b/GNU_efi_HelloWorld/Makefile
index e3a5956..80f1398 100644
--- a/GNU_efi_HelloWorld/Makefile
+++ b/GNU_efi_HelloWorld/Makefile
@@ -2,6 +2,7 @@ ARCH		= $(shell uname -m | sed s,i[3456789]86,ia32,)
 
 OBJS		= hello.o
 TARGET		= hello.efi
+TARGET_DEBUG	= hello.debug
 
 EFIINC		= /usr/include/efi
 EFFINCS		= -I$(EFIINC) -I$(EFIINC)/$(ARCH) -I$(EFIINC)/protocol
@@ -10,28 +11,37 @@ EFI_CRT_OBJS	= $(EFILIB)/crt0-efi-$(ARCH).o
 EFI_LDS		= $(EFILIB)/elf_$(ARCH)_efi.lds
 
 CFLAGS		= $(EFFINCS) -fno-stack-protector -fpic \
-			-fshort-wchar -mno-red-zone -Wall \
-			-ggdb
+			-fshort-wchar -mno-red-zone -Wall
+CFLAGS		+=	-ggdb3 -O0 -DDEBUG -DEFI_DEBUG=1
 
 ifeq ($(ARCH),x86_64)
 	CFLAGS += -DEFI_FUNCTION_WRAPPER
 endif
 
 LDFLAGS		= -nostdlib -znocombreloc -T $(EFI_LDS) -shared \
-			-Bsymbolic -L $(EFILIB) $(EFI_CRT_OBJS)
+		  -Bsymbolic -L $(EFILIB) $(EFI_CRT_OBJS)
 
-all: $(TARGET)
+SECTIONS	= .text .sdata .data .dynamic .dynsym .rel .rela .reloc
+
+DEBUG_SECTIONS	= .debug_info .debug_abbrev .debug_aranges \
+		  .debug_line .debug_str
+
+all: clear $(TARGET) $(TARGET_DEBUG)
 	cp hello.efi ../test_code/hda-contents/
 
 hello.so: $(OBJS)
 	ld $(LDFLAGS) $(OBJS) -o $@ -lefi -lgnuefi
 
 %.efi: %.so
-	objcopy -j .text -j .sdata -j .data -j .dynamic \
-	-j .dynsym -j .rel -j .rela -j .reloc \
+	objcopy $(foreach sec,$(SECTIONS),-j $(sec)) \
+	--target=efi-app-$(ARCH) $^ $@
+
+%.debug: %.so
+	objcopy $(foreach sec,$(SECTIONS) $(DEBUG_SECTIONS),-j $(sec)) \
 	--target=efi-app-$(ARCH) $^ $@
 
 clear:
-	rm *.efi
-	rm *.o
-	rm *.so
+	rm -f *.efi
+	rm -f *.debug
+	rm -f *.o
+	rm -f *.so
diff --git a/GNU_efi_HelloWorld/example_Makefile b/GNU_efi_HelloWorld/example_Makefile
new file mode 100644
index 0000000..f62df60
--- /dev/null
+++ b/GNU_efi_HelloWorld/example_Makefile
@@ -0,0 +1,96 @@
+# /phoenix/kernel/boot/Makefile
+#
+# This file is a part of Phoenix operating system.
+# Copyright (c) 2011-2012, Artyom Lebedev <artyom.lebedev@gmail.com>
+# All rights reserved.
+# See COPYING file for copyright details.
+
+include $(PHOENIX_ROOT)/make/makevar.mak
+
+LOADER_BINARY = phoenix.efi
+
+COMPILE_DIR = build
+OBJ_DIR = $(COMPILE_DIR)/$(PHOENIX_TARGET)
+
+SUBDIRS = gnuefi lib lib/runtime lib/x86_64 loader \
+	$(PHOENIX_ROOT)/lib/common $(PHOENIX_ROOT)/lib/elf
+
+EFI_IMAGE = $(OBJ_DIR)/$(LOADER_BINARY)
+EFI_DEBUG_IMAGE = $(OBJ_DIR)/debug.$(LOADER_BINARY)
+ELF_IMAGE = $(OBJ_DIR)/elf_image.so
+
+SRCS = $(foreach dir,$(SUBDIRS),$(wildcard $(dir)/*.S $(dir)/*.c  $(dir)/*.cpp))
+
+$(foreach dir,$(SUBDIRS),$(eval vpath %.S $(dir)) $(eval vpath %.c $(dir)) $(eval vpath %.cpp $(dir)))
+
+OBJS = $(foreach src,$(SRCS), \
+	$(OBJ_DIR)/$(patsubst %.cpp,%.o,$(patsubst %.c,%.o,$(patsubst %.S,%.o,$(notdir $(src))))))
+DEPS = $(OBJS:.o=.d)
+
+CFLAGS = $(GLOBAL_C_FLAGS) $(C_STANDARD) -Wno-pointer-sign
+
+CPP_FLAGS = $(GLOBAL_CXX_FLAGS) $(CXX_STANDARD) $(CXX_RESTRICTIONS) \
+	-fno-exceptions -fno-rtti
+
+COMMON_FLAGS = $(GLOBAL_FLAGS) -fpic -Wall -Werror -fshort-wchar \
+	-fno-strict-aliasing -fno-merge-constants -DEFI_FUNCTION_WRAPPER \
+	-mno-red-zone -DCONFIG_x86_64 -DBOOT_LOADER -DEFI_APP \
+	-DKERNEL_ADDRESS=$(KERNEL_ADDRESS)
+
+SECTIONS = .text .sdata .data .dynamic .dynsym .rel .rela .reloc
+DEBUG_SECTIONS = .debug_info .debug_abbrev .debug_loc .debug_aranges \
+	.debug_line .debug_macinfo .debug_str 
+
+ifeq ($(PHOENIX_TARGET),RELEASE)
+COMMON_FLAGS += -O2
+else ifeq ($(PHOENIX_TARGET),DEBUG)
+COMMON_FLAGS += -ggdb3 -O0 -DDEBUG -DEFI_DEBUG=1
+else
+$(error Target not supported: $(PHOENIX_TARGET))
+endif
+
+INCLUDE_DIRS = inc inc/protocol inc/x86_64 lib \
+	$(PHOENIX_ROOT)/kernel/sys $(PHOENIX_ROOT)/kernel/sys/arch/$(PHOENIX_ARCH) \
+	$(PHOENIX_ROOT)/include $(PHOENIX_ROOT)/lib/elf
+
+IFLAGS = $(foreach incdir,$(INCLUDE_DIRS),-I$(incdir))
+
+LD_SCRIPT = gnuefi/elf_x86_64_efi.lds
+
+LDFLAGS = -nostdlib -T $(LD_SCRIPT) -shared -Bsymbolic --unresolved-symbols=report-all
+
+.PHONY: all clean
+
+all: $(EFI_IMAGE) $(EFI_DEBUG_IMAGE)
+
+# include dependencies if exist
+-include $(DEPS)
+
+$(EFI_IMAGE): $(ELF_IMAGE)
+	$(OBJCOPY) $(foreach sec,$(SECTIONS),-j $(sec)) --target=efi-app-x86_64 $< $@
+	
+$(EFI_DEBUG_IMAGE): $(ELF_IMAGE)
+	$(OBJCOPY) $(foreach sec,$(SECTIONS) $(DEBUG_SECTIONS),-j $(sec)) --target=efi-app-x86_64 $< $@
+
+$(ELF_IMAGE): $(OBJ_DIR) $(OBJS)
+	$(LD) $(LDFLAGS) $(OBJS) -o $@
+
+$(OBJ_DIR)/%.o: %.S
+	$(CC) -DCONFIG_x86_64 -c -o $@ $<
+	
+$(OBJ_DIR)/%.o: %.c
+	$(CC) $(IFLAGS) $(COMMON_FLAGS) $(CFLAGS) -c -o $@ $<
+	$(CC) -MM -MT '$@' $(IFLAGS) $(COMMON_FLAGS) $(CFLAGS) -c -o $(@:.o=.d) $<
+
+$(OBJ_DIR)/%.o: %.cpp
+	$(CC) $(IFLAGS) $(COMMON_FLAGS) $(CPP_FLAGS) -c -o $@ $<
+	$(CC) -MM -MT '$@' $(IFLAGS) $(COMMON_FLAGS) $(CPP_FLAGS) -c -o $(@:.o=.d) $<
+
+$(COMPILE_DIR):
+	if [ ! -d $@ ]; then mkdir $@; fi
+
+$(OBJ_DIR): $(COMPILE_DIR)
+	if [ ! -d $@ ]; then mkdir $@; fi
+
+clean:
+	$(RM) -rf $(COMPILE_DIR)
diff --git a/GNU_efi_HelloWorld/hello.c b/GNU_efi_HelloWorld/hello.c
index f40df6e..06b2b0b 100644
--- a/GNU_efi_HelloWorld/hello.c
+++ b/GNU_efi_HelloWorld/hello.c
@@ -1,6 +1,5 @@
 #include <efi.h>
 #include <efilib.h>
-#include <efidebug.h>
 
 EFI_STATUS
 EFIAPI
diff --git a/GNU_efi_HelloWorld/hello.debug b/GNU_efi_HelloWorld/hello.debug
new file mode 100755
index 0000000..f7fd077
Binary files /dev/null and b/GNU_efi_HelloWorld/hello.debug differ
diff --git a/GNU_efi_HelloWorld/hello.efi b/GNU_efi_HelloWorld/hello.efi
index f8ea7e2..59e1a03 100755
Binary files a/GNU_efi_HelloWorld/hello.efi and b/GNU_efi_HelloWorld/hello.efi differ
diff --git a/documentation/GDB commands b/documentation/GDB commands
index 1cbd2ac..ef02570 100644
--- a/documentation/GDB commands	
+++ b/documentation/GDB commands	
@@ -14,7 +14,7 @@ QEMU CONFIGURATION
 #
 
 SYMBOL FILES
-	add-symbol-file Hello.debug 0x... -s .data 0x...
+	add-symbol-file /path/to/Hello.debug 0x... -s .data 0x...
 
 
 CONNECTION
@@ -98,3 +98,23 @@ gdb --tui
 	- next
 
 	- ctrl+x o		|| change active window
+
+VARIABLES
+	info locals
+	info variables
+	info args
+
+	|| Set is the same as print except that the expression's value is not printed
+	|| and is not put in the value history.
+	||  if your program has a variable width, you get an error if you try to set
+	|| a new value with just ‘set width=13’, because GDB has the command set width
+	|| To avoid to set silently general variables to invalid values, ALWAYS use
+	|| set var x=4
+	print x=4
+	set x=4 or set variable x=4
+	whatis x -> type = double
+
+
+
+
+
diff --git a/documentation/GNU-efi b/documentation/GNU-efi
index 1efe81c..40cd91f 100644
--- a/documentation/GNU-efi
+++ b/documentation/GNU-efi
@@ -59,7 +59,18 @@ hello.so: $(OBJS)
     -j .dynsym -j .rel -j .rela -j .reloc \
     --target=efi-app-$(ARCH) $^ $@
 
+-----
+Now expanded version in git
 
+Get ImageBase:
+	Run ./test.sh and then hello.efi...this prints ImageBase
+
+Get Offsets:
+	GDB
+	file hello.efi
+	-> get text and data offset
+	file
+	add-symbol-file hello.efi (ImageBase+text-off) -s .data (ImageBase+data-off)
 
 
 #################################################################################
@@ -210,12 +221,72 @@ you need to add ImageBase address to their offsets:
 * 3000 - ... is .text								*
 * c00 - ... is .data								*
 * (gdb) file			|| unload file					*
-* add-symbol-table hello.efi (ImageBase+text-off) -s .data (ImageBase+data-off)	*
+* add-symbol-file hello.efi (ImageBase+text-off) -s .data (ImageBase+data-off)	*
 *********************************************************************************
 
+#################################################################################
+#		https://www.rodsbooks.com/efi-programming/hello.html		#
+#################################################################################
 
-
-
+You should not normally include regular C header files, such as stdlib.h,
+because most of  these header files define data types and functions that are used
+by the C library. This library is not available in EFI.
+
+************************************
+* efi.h and efilib.h always needed *
+************************************
+
+Entry point: efi_main() in GNU-efi
+
+CFLAGS:
+* -fno-stack-protector:
+	Stack protection isn't suppoerted by EFI, so there's no point in
+	building a binary with this feature active.
+
+* -fpic:
+	EFI requires that code be position-independet, hence the use
+	of this option.
+
+* -fshort-wchar:
+	GCC defines the wchar_t type to be 32 bits by default, but EFI requires
+	it to be 16 bits for 16-bit strings to work correctly.
+
+* fmno-red-zone:
+	On x86-64 systems, the red zone is an area that follows the stack pointer
+	that can be used for temporary variables. The EFI may modify this area,
+	though, so it's not safe to use, and you must compile EFI binaries with
+	this option.
+
+* -Wall:
+	When developing EFI applications, you might want to pay extra attention to
+	compiler warnings, and this switch (which causes warnings to be treated as
+	errors) can help.
+
+* -DEFI_FUNCTION_WRAPPER:
+	This option is required on the x86_64 platform, but is not defined on the
+	32-bit x86 platform. It relates to th calling conventions for EFI functions,
+	described on the Using EFI Services page.
+
+LDFLAGS:
+* -nostdlib:
+	An EFI application should not be linked against standard libraries, and this
+	argument accomplishes this goal.
+
+* -nocombreloc:
+	This argument causes the linker to not combine relocation sections.
+
+* -T $(EFI_LDS):
+	To create an EFI binary, a non-standard linker script must be used, and this
+	option tells ld where to find it.
+
+* -shared:
+	Even with GNU-EFI's new linker script, ld can't create the final executable.
+	Instead, it creates a shared library, which is subsequently
+	turned into the final binary.
+
+* -Bsymbolic:
+	This option causes references to global symbols to be bound to the
+	definitions within the shared library.
 
 
 
diff --git a/documentation/gdb with efi application b/documentation/gdb with efi application
deleted file mode 100644
index e69de29..0000000
diff --git a/test_code/OVMF_VARS.fd b/test_code/OVMF_VARS.fd
index d1888bc..b00bb60 100644
Binary files a/test_code/OVMF_VARS.fd and b/test_code/OVMF_VARS.fd differ
-- 
cgit v1.2.3-55-g7522


From 9c320b5d886af0abb27fce694f5f97e472bef3d6 Mon Sep 17 00:00:00 2001
From: Regia König
Date: Mon, 22 Aug 2022 15:26:23 +0200
Subject: Finish gdb_procedure documentation

---
 GNU_efi_HelloWorld/gdb_procedure |   6 ++++++
 documentation/GDB commands       |  13 +++++++++++++
 test_code/OVMF_VARS.fd           | Bin 540672 -> 540672 bytes
 3 files changed, 19 insertions(+)

(limited to 'documentation')

diff --git a/GNU_efi_HelloWorld/gdb_procedure b/GNU_efi_HelloWorld/gdb_procedure
index db39c70..2ee853f 100644
--- a/GNU_efi_HelloWorld/gdb_procedure
+++ b/GNU_efi_HelloWorld/gdb_procedure
@@ -15,4 +15,10 @@
 
 (gdb) b efi_main
 (gdb) b *0x657e260
+(gdb) info b
 
+(gdb) target remote localhost:1234
+(gdb) c
+
+(gdb) layout asm
+(gdb) layout src
diff --git a/documentation/GDB commands b/documentation/GDB commands
index ef02570..14b793b 100644
--- a/documentation/GDB commands	
+++ b/documentation/GDB commands	
@@ -99,6 +99,19 @@ gdb --tui
 
 	- ctrl+x o		|| change active window
 
+	- ctrl+x 1		|| use TUI layout with one window
+	- ctrl+x 2		|| use TUI layout with two windows
+
+	- PgUp			|| scroll the active window one page up
+	- PgDn			|| scroll the active window one page down
+
+	- Up			|| scroll the active window one line up
+	- Down			|| scroll the active window one lin down
+	- Right
+	- Left
+
+	- C+L			|| refresh the screen
+
 VARIABLES
 	info locals
 	info variables
diff --git a/test_code/OVMF_VARS.fd b/test_code/OVMF_VARS.fd
index 5cc4003..cfa9ff2 100644
Binary files a/test_code/OVMF_VARS.fd and b/test_code/OVMF_VARS.fd differ
-- 
cgit v1.2.3-55-g7522


From 29a8eebf9231692f965f29221d140e20b0a1f64b Mon Sep 17 00:00:00 2001
From: Regia König
Date: Wed, 24 Aug 2022 14:28:23 +0200
Subject: Analyse memtest86 binary structure

---
 .../24_08_22_memtest_build_process                 | 205 +++++++++++++++++++++
 1 file changed, 205 insertions(+)
 create mode 100644 documentation/memtest86_build_process/24_08_22_memtest_build_process

(limited to 'documentation')

diff --git a/documentation/memtest86_build_process/24_08_22_memtest_build_process b/documentation/memtest86_build_process/24_08_22_memtest_build_process
new file mode 100644
index 0000000..9847a5b
--- /dev/null
+++ b/documentation/memtest86_build_process/24_08_22_memtest_build_process
@@ -0,0 +1,205 @@
+
+Linker scripts: 
+	memtest_shared.lds
+	memtest_efi.lds
+boot/
+	header.S			|| The standard EFI header
+	setup.S
+	efisetup.c			|| Macros + private functions 
+					|| Only for 32-bit boot entry point???
+	startup64.S
+
+*.c files in app/, lib/, system/, tests/
+
+##########################################################################
+##									##
+##		MEMTEST LINKING PART 1 - MEMTEST_SHARED			##
+##									##
+##########################################################################
+
+#
+#	memtest_shared.lds
+#
+
+OUTPUT_FORMAT("elf64-x86-64")
+
+ENTRY(startup64);   <--------- in startup64.S
+
+SECTIONS {
+	.text : {
+		_start = .;  <---------- First section in memtest_shared-.text
+		*(.text)
+		*(.text.*)
+		...
+
+	.rodata
+	.dynsym
+	.dynstr
+	.hash
+	.gnu.hash
+	.dynamic
+
+	.rela.text
+	.rela.rodata
+	.rela.data
+	.rela.got
+	.rela.plt
+
+	.data
+	.got
+	.bss
+
+#
+#	startup64.S
+#
+118:	.globl startup64
+119:	startup64:
+120:		cld
+121:		cli
+
+		# Save the boot params pointer
+125:		movq	%rsi, boot_params_addr(%rip)
+
+127:		jmp startup
+
+143:	.globl	startup
+144:	startup:
+		Use startup stack until we pick a correct one
+		Pick the correct stack
+		Initialize the pml4 and pdp tables
+		Set the page directory base address
+		Initialise the GDT and the segment registers
+		Load the GDT and the segment registers
+		Initialise the IDT
+		Initialise the IDT descriptor
+		Zero the BSS (if first boot)
+		Initialise the FPU
+		Enable SSE
+		Call the dynamic linker to fix up the addresses in the GOT
+
+268:	call reloc  <---------------- system/reloc64.c:151
+		get_load_address()
+		get_dynamic_section_offset()
+		get_dynamic_info()
+		do_relocations
+
+276:	call main  <---------------- app/main.c:499  # main entry point called from the startup code
+
+#
+# Analysis of the binary
+#
+
+* objdump -h memtest_shared
+	.text	...	File off	Algn
+			00200000	2**4
+
+* objdump -g memtest_shared | grep efi_setup		# check for occurences
+			    | grep efi_handover	
+
+* readelf -h memtest_shared
+	ELF Header:
+	  Magic:   7f 45 4c 46 02 01 01 00 00 00 00 00 00 00 00 00 
+	  Class:                             ELF64
+	  Data:                              2's complement, little endian
+	  Version:                           1 (current)
+	  OS/ABI:                            UNIX - System V
+	  ABI Version:                       0
+	  Type:                              DYN (Shared object file)
+	  Machine:                           Advanced Micro Devices X86-64
+	  Version:                           0x1
+	  Entry point address:               0x200  <-----------------That's startup64 !!!
+	  Start of program headers:          64 (bytes into file)
+	  Start of section headers:          2821656 (bytes into file)
+	  Flags:                             0x0
+	  Size of this header:               64 (bytes)
+	  Size of program headers:           56 (bytes)
+	  Number of program headers:         3
+	  Size of section headers:           64 (bytes)
+	  Number of section headers:         26
+	  Section header string table index: 25
+
+* objdump -d memtest_shared
+	memtest_shared: file format elf64-x86-64
+
+	Disassembly of section .text:
+
+	0000000000000000 <_start>:
+	0:	cld
+	1:	cli
+
+	9f:	ljmp	*-0x6(%rsp)
+
+	00000000000001e0 <efi_boot>:
+	
+	1ed:	jmp 210 <efi_handover>
+
+	0000000000000200 <startup64>:
+
+	202:	mov %rsi,0x23df7(%rip)		# 2400 <boot_params_addr>
+	209:	jmp 220 <startup>
+
+	0000000000000210 <efi_handover>:
+
+	214:	callq 68f <efi_setup>
+	219:	mov %rax,0x23de0(%rip)		# 2400 <boot_params_addr> 
+
+	0000000000000220 <startup>:
+
+	2ce:	ljmp *-0x6(%rsp)
+
+
+
+##########################################################################
+##									##
+##		MEMTEST LINKING PART 2 - MEMTEST.EFI			##
+##									##
+##########################################################################
+
+#
+#	memtest_efi.lds
+#
+OUTPUT_FORMAT("binary")
+
+ENTRY(boot);			<----- in boot/header.S:36
+
+SECTIONS {
+	.header : {		<----- boot/header.S
+		*(.header)
+	}
+	.setup : {		<----- boot/setup.S
+		*(.setup)
+	}
+	.text : {
+		_text_start = .;
+		*(.data)	<----- !!! NO .text !!!!
+		...
+
+#
+#	header.S
+#
+The EFI loader loads the header at ImageBase, so we have to locate the main program
+after that. This means we can't load the main program at HIGH_LOAD_ADDR. Pick a load
+address well away from HIGH_LOAD_ADDR, to avoid overlap when relocating code.
+
+. # define IMAGE_BASE	0x200000
+. # define BASE_OF_CODE	0x1000		<- where do these values come from?????
+
+	.section ".header", "ax", @progbits
+	.code16
+
+	.globl boot
+
+boot:
+	"MZ", the MS-DOS header signature
+	.byte 0x4d
+	.byte 0x5a
+
+pe_header:
+
+coff_header:
+
+...
+
+#
+#	setup.S
+#
-- 
cgit v1.2.3-55-g7522


From e7897de9471e1d94ad79e2b03fcb8afc685760f1 Mon Sep 17 00:00:00 2001
From: Regia König
Date: Thu, 25 Aug 2022 15:08:09 +0200
Subject: Setup.S documentation and new command in create_debug.sh

---
 Makefile_for_memtest_gdb                           |  2 +-
 create_debug.sh                                    | 13 ++++-
 .../24_08_22_memtest_build_process                 | 39 +++++++++++++++
 memtest_efi_modified.lds                           | 57 ++++++++++++++++++++--
 4 files changed, 103 insertions(+), 8 deletions(-)

(limited to 'documentation')

diff --git a/Makefile_for_memtest_gdb b/Makefile_for_memtest_gdb
index 58025f7..3413741 100644
--- a/Makefile_for_memtest_gdb
+++ b/Makefile_for_memtest_gdb
@@ -91,7 +91,7 @@ boot/startup.s: ../boot/startup64.S ../boot/boot.h
 
 boot/%.s: ../boot/%.S ../boot/boot.h
 	@mkdir -p boot
-	$(CC) -E -traditional -I../boot -o $@ $<
+	$(CC) -E -traditional -fPIC -I../boot -o $@ $<
 
 boot/efisetup.o: ../boot/efisetup.c
 	@mkdir -p boot
diff --git a/create_debug.sh b/create_debug.sh
index ada21f9..45f4c1f 100755
--- a/create_debug.sh
+++ b/create_debug.sh
@@ -8,6 +8,15 @@ BSS_SIZE=$(size -B -d memtest_shared | grep memtest_shared | tr -s ' ' | cut -d'
 echo $BSS_SIZE
 echo "bss_size: $BSS_SIZE"
 
+ld --defsym=_bss_size=$(size -B -d memtest_shared | grep memtest_shared | tr -s ' ' | cut -d ' ' -f3) \
+	-shared \
+	--print-memory-usage \
+	--print-output-format \
+	-Bsymbolic \
+	-M \
+	-nostdlib \
+	-T linker_modified.lds \
+	-o memtest_modified.efi \
+	boot/setup.o boot/startup.o boot/efisetup.o app/*.o lib/*.o system/*.o  tests/*.o
 
-
-ld --defsym=_bss_size=$BSS_SIZE -T memtest_efi_modified.lds boot/header.o boot/setup.o -b memtest_shared -o memtest_modified.efi
+# ld -N --defsym=_bss_size=$BSS_SIZE -T linker_modified.lds boot/header.o boot/setup.o -b elf64-x86-64 memtest_shared -o memtest_modified.efi
diff --git a/documentation/memtest86_build_process/24_08_22_memtest_build_process b/documentation/memtest86_build_process/24_08_22_memtest_build_process
index 9847a5b..fc8f33c 100644
--- a/documentation/memtest86_build_process/24_08_22_memtest_build_process
+++ b/documentation/memtest86_build_process/24_08_22_memtest_build_process
@@ -203,3 +203,42 @@ coff_header:
 #
 #	setup.S
 #
+Collects memory map information from the BIOS, disables APM, enables A20 and performs
+the switch from real mode to protected mode before jumping to the main program entry
+point.
+
+The memory map information is stored in the 4KB block of memory immediately following
+the setup code. The layout of the information matches the Linux boot_params struct.
+A pointer to this block is passed to the main program, for compatibility with the Linux
+32-bit boot protocol.
+
+. # define BOOT_PARAMS_START	(SETUP_SECS * 512)	|| SETUP_SEC is defined in boot.h
+. # define BOOT_PARAMS_END	(BOOT_PARAMS_START + 4096)  <--- here are the 4K
+
+	.section ".setup",  "ax", @progbits
+	.code16
+
+Emulate the Linux boot header, to allow loading by other boot loaders. Indicate that the
+main program code should be loaded in high memory.
+
+	.globl setup
+setup: jmp do_setup
+
+101: do_setup:
+	Reload the segment registers, except for the stack
+	Get the memory map and disable APM
+	Disable interrupts
+	Enable A20
+	...
+
+179: flush:
+	Reload the segment registers and jump to the main test program <------------!!!!
+
+	...
+188: jump:
+	data32 ljmp $KERNEL_CS, $0
+
+
+
+389: Pad to the declared size
+	.org	(ESTUP_SECS*512)
diff --git a/memtest_efi_modified.lds b/memtest_efi_modified.lds
index 179fe93..6f035c8 100644
--- a/memtest_efi_modified.lds
+++ b/memtest_efi_modified.lds
@@ -1,5 +1,6 @@
-OUTPUT_FORMAT("binary")
-OUTPUT_ARCH(i386:x86-64)
+OUTPUT_FORMAT("elf64-x86-64");
+OUTPUT_ARCH(i386:x86-64);
+
 
 ENTRY(boot);
 SECTIONS {
@@ -13,14 +14,60 @@ SECTIONS {
 	. = ALIGN(512);
 	.text : {
 		_text_start = . ;
-		*(.data)
-		. = ALIGN(512);
+		_start = .;
+		*(.text)
+		*(.text.*)
+		*(.plt)
+		_etext = . ;
 		_text_end = . ;
+	}= 0x9090
+
+	.rodata : {
+		*(.rodata)
+		*(.rodata.*)
 	}
+	.dynsym     : { *(.dynsym) }
+	.dynstr     : { *(.dynstr) }
+	.hash       : { *(.hash) }
+	.gnu.hash   : { *(.gnu.hash) }
+	.dynamic    : { *(.dynamic) }
+
+	.rela.text    : { *(.rela.text   .rela.text.*) }
+	.rela.rodata  : { *(.rela.rodata .rela.rodata.*) }
+	.rela.data    : { *(.rela.data   .rela.data.*) }
+	.rela.got     : { *(.rela.got    .rela.got.*) }
+	.rela.plt     : { *(.rela.plt    .rela.plt.*) }
+
+	. = ALIGN(4);
+	.data : {
+		 _data = .;
+		*(.data)
+		*(.data.*)
+	}
+	.got : {
+		*(.got.plt)
+		*(.got)
+		_edata = . ;
+	}
+	. = ALIGN(4);
+	.bss : {
+		_bss = .;
+		*(.dynbss)
+		*(.bss)
+		*(.bss.*)
+		*(COMMON)
+		. = ALIGN(16);
+		_stacks = .;
+		*(.stacks)
+		/* _end must be at least 256 byte aligned */
+		. = ALIGN(256);
+		_end = .;
+	}
+
 	.debug : {
 		*(.debug*)
 	}
-
+	
 	_text_size = (_text_end  - _text_start);
 
 	_sys_size  = _text_size >> 4;
-- 
cgit v1.2.3-55-g7522


From e7b7db1268cab0be88a22d52c27ce836729e81a8 Mon Sep 17 00:00:00 2001
From: Regia König
Date: Fri, 2 Sep 2022 11:29:26 +0200
Subject: Move scripts for gdb

---
 documentation/GDB commands                |   6 ++
 test_code/gdbscript                       | 104 ------------------------------
 test_code/gdbscripts/gdb_relocation_tests |  12 ++++
 test_code/gdbscripts/gdbscript            | 104 ++++++++++++++++++++++++++++++
 test_code/gdbscripts/memtest_gdbscript    |  10 +++
 test_code/memtest_gdbscript               |  10 ---
 6 files changed, 132 insertions(+), 114 deletions(-)
 delete mode 100644 test_code/gdbscript
 create mode 100644 test_code/gdbscripts/gdb_relocation_tests
 create mode 100644 test_code/gdbscripts/gdbscript
 create mode 100644 test_code/gdbscripts/memtest_gdbscript
 delete mode 100644 test_code/memtest_gdbscript

(limited to 'documentation')

diff --git a/documentation/GDB commands b/documentation/GDB commands
index 14b793b..8411f19 100644
--- a/documentation/GDB commands	
+++ b/documentation/GDB commands	
@@ -127,6 +127,12 @@ VARIABLES
 	set x=4 or set variable x=4
 	whatis x -> type = double
 
+DISSASEMBLE BINARIES
+	gdb -batch -ex 'file /bin/ls' -ex 'disassemble main'
+	Also, -ex 'set disassembly-flavor intel' before other -exs will result in Intel assembly syntax
+
+	gcc -O0 -ggdb3 -std=c99 -Wall -Wextra -pedantic -o main.out main.c
+	gdb -batch -ex "disassemble/rs myfunc" main.out
 
 
 
diff --git a/test_code/gdbscript b/test_code/gdbscript
deleted file mode 100644
index f0d4a38..0000000
--- a/test_code/gdbscript
+++ /dev/null
@@ -1,104 +0,0 @@
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/PcdPeim.debug 0x82c380
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/ReportStatusCodeRouterPei.debug 0x831700
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/StatusCodeHandlerPei.debug 0x833900
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/PlatformPei.debug 0x835a00
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/PeiCore.debug 0x7ee8240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/PcdPeim.debug 0x7ee2240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/DxeIpl.debug 0x7edd240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/S3Resume2Pei.debug 0x7ed8240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/CpuMpPei.debug 
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/DxeCore.debug 0x7e8f240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/DevicePathDxe.debug 0x7553240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/PcdDxe.debug 0x754c240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/AmdSevDxe.debug 0x755f240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/TdxDxe.debug 0x7547240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/FvbServicesRuntimeDxe.debug 0x7ae7000
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/ReportStatusCodeRouterRuntimeDxe.debug 0x7ae0000
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/RuntimeDxe.debug 0x7ada000
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/SecurityStubDxe.debug 0x7544240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/EbcDxe.debug 0x7538240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/CpuIo2Dxe.debug 0x7541240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/CpuDxe.debug 
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/IncompatiblePciDeviceSupportDxe.debug 0x7128240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/PciHotPlugInitDxe.debug 0x70fc240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/ResetSystemRuntimeDxe.debug 0x7ad3000
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/Metronome.debug 0x7125240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/HiiDatabase.debug 0x70be240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/NullMemoryTestDxe.debug 0x711f240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/AcpiTableDxe.debug 0x70ec240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/S3SaveStateDxe.debug 0x70e5240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/DpcDxe.debug 0x70f9240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/IoMmuDxe.debug 0x70b7240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/EmuVariableFvbRuntimeDxe.debug 0x7acd000
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/VariableRuntimeDxe.debug 0x7ac3000
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/StatusCodeHandlerRuntimeDxe.debug 0x7abe000
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/LocalApicTimerDxe.debug 0x70e2240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/PciHostBridgeDxe.debug 0x70a1240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/SetupBrowser.debug 0x706d240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/SmbiosDxe.debug 0x709a240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/QemuFwCfgAcpiPlatform.debug 0x7092240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/BootScriptExecutorDxe.debug 0x703d240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/tftpDynamicCommand.debug 0x7087240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/httpDynamicCommand.debug 0x702f240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/LinuxInitrdDynamicShellCommand.debug 0x7064240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/LogoDxe.debug 0x70ac240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/QemuRamfbDxe.debug 0x7058240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/FaultTolerantWriteDxe.debug 0x7058240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/PcRtc.debug 0x7ab7000
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/WatchdogTimer.debug 0x7056240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/MonotonicCounterRuntimeDxe.debug 0x7ab3000
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/CapsuleRuntimeDxe.debug 0x7aae000
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/DriverHealthManagerDxe.debug 0x7021240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/BdsDxe.debug 0x6de3240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/RamDiskDxe.debug 0x700b240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/DisplayEngine.debug 0x6dbb240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/SmbiosPlatformDxe.debug 0x7018240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/PlatformDxe.debug 0x7001240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/PciBusDxe.debug 0x6dab240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/VirtioPciDeviceDxe.debug 0x6ddf240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/Virtio10.debug 0x6dda240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/VirtioBlkDxe.debug 0x6dd6240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/VirtioScsiDxe.debug 0x6dd2240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/VirtioRngDxe.debug 0x6da7240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/ConPlatformDxe.debug 0x6da2240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/ConSplitterDxe.debug 0x6d92240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/GraphicsConsoleDxe.debug 0x6d8b240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/TerminalDxe.debug 0x6d79240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/QemuKernelLoaderFsDxe.debug 0x6d74240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/DiskIoDxe.debug 0x6d74240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/PartitionDxe.debug 0x6d6d240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/EnglishDxe.debug 0x6d88240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/ScsiBus.debug 0x6d68240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/ScsiDisk.debug 0x6d54240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/SataController.debug 0x6d84240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/AtaAtapiPassThruDxe.debug 0x6d3c240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/AtaBusDxe.debug 0x6d4d240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/NvmExpressDxe.debug 0x6d26240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/SioBusDxe.debug 0x6d64240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/PciSioSerialDxe.debug 0x6d1f240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/Ps2KeyboardDxe.debug 0x6d18240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/BootGraphicsResourceTableDxe.debug 0x6d5e240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/Fat.debug 0x6d0d240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/UdfDxe.debug 0x6d06240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/VirtioFsDxe.debug 0x6cfc240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/SnpDxe.debug 0x6cf4240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/VlanConfigDxe.debug 0x6ced240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/MnpDxe.debug 0x6ce2240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/ArpDxe.debug 0x6cdb240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/Dhcp4Dxe.debug 0x6cd0240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/Ip4Dxe.debug 0x6ca8240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/Udp4Dxe.debug 0x6cc7240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/Mtftp4Dxe.debug 0x6cbd240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/TcpDxe.debug 0x6c82240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/UefiPxeBcDxe.debug 0x6c70240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/IScsiDxe.debug 0x6c32240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/VirtioNetDxe.debug 0x6c9c240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/UhciDxe.debug 0x6c60240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/EhciDxe.debug 0x6c29240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/XhciDxe.debug 0x6c1b240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/UsbBusDxe.debug 0x6c11240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/UsbKbDxe.debug 0x6c69240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/UsbMassStorageDxe.debug 0x6c96240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/QemuVideoDxe.debug 0x6c52240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/VirtioGpuDxe.debug 0x6c0a240
-add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/Shell.debug 0x6449240
diff --git a/test_code/gdbscripts/gdb_relocation_tests b/test_code/gdbscripts/gdb_relocation_tests
new file mode 100644
index 0000000..96b7226
--- /dev/null
+++ b/test_code/gdbscripts/gdb_relocation_tests
@@ -0,0 +1,12 @@
+add-symbol-file ../../memtest86plus_debug/build64/memtest.debug 0x201000
+
+b main
+b run_at
+b reloc
+b test_all_windows
+b main.c:407
+
+target remote localhost:1234
+layout src
+info b
+c
diff --git a/test_code/gdbscripts/gdbscript b/test_code/gdbscripts/gdbscript
new file mode 100644
index 0000000..f0d4a38
--- /dev/null
+++ b/test_code/gdbscripts/gdbscript
@@ -0,0 +1,104 @@
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/PcdPeim.debug 0x82c380
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/ReportStatusCodeRouterPei.debug 0x831700
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/StatusCodeHandlerPei.debug 0x833900
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/PlatformPei.debug 0x835a00
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/PeiCore.debug 0x7ee8240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/PcdPeim.debug 0x7ee2240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/DxeIpl.debug 0x7edd240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/S3Resume2Pei.debug 0x7ed8240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/CpuMpPei.debug 
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/DxeCore.debug 0x7e8f240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/DevicePathDxe.debug 0x7553240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/PcdDxe.debug 0x754c240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/AmdSevDxe.debug 0x755f240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/TdxDxe.debug 0x7547240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/FvbServicesRuntimeDxe.debug 0x7ae7000
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/ReportStatusCodeRouterRuntimeDxe.debug 0x7ae0000
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/RuntimeDxe.debug 0x7ada000
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/SecurityStubDxe.debug 0x7544240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/EbcDxe.debug 0x7538240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/CpuIo2Dxe.debug 0x7541240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/CpuDxe.debug 
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/IncompatiblePciDeviceSupportDxe.debug 0x7128240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/PciHotPlugInitDxe.debug 0x70fc240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/ResetSystemRuntimeDxe.debug 0x7ad3000
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/Metronome.debug 0x7125240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/HiiDatabase.debug 0x70be240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/NullMemoryTestDxe.debug 0x711f240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/AcpiTableDxe.debug 0x70ec240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/S3SaveStateDxe.debug 0x70e5240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/DpcDxe.debug 0x70f9240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/IoMmuDxe.debug 0x70b7240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/EmuVariableFvbRuntimeDxe.debug 0x7acd000
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/VariableRuntimeDxe.debug 0x7ac3000
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/StatusCodeHandlerRuntimeDxe.debug 0x7abe000
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/LocalApicTimerDxe.debug 0x70e2240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/PciHostBridgeDxe.debug 0x70a1240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/SetupBrowser.debug 0x706d240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/SmbiosDxe.debug 0x709a240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/QemuFwCfgAcpiPlatform.debug 0x7092240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/BootScriptExecutorDxe.debug 0x703d240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/tftpDynamicCommand.debug 0x7087240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/httpDynamicCommand.debug 0x702f240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/LinuxInitrdDynamicShellCommand.debug 0x7064240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/LogoDxe.debug 0x70ac240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/QemuRamfbDxe.debug 0x7058240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/FaultTolerantWriteDxe.debug 0x7058240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/PcRtc.debug 0x7ab7000
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/WatchdogTimer.debug 0x7056240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/MonotonicCounterRuntimeDxe.debug 0x7ab3000
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/CapsuleRuntimeDxe.debug 0x7aae000
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/DriverHealthManagerDxe.debug 0x7021240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/BdsDxe.debug 0x6de3240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/RamDiskDxe.debug 0x700b240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/DisplayEngine.debug 0x6dbb240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/SmbiosPlatformDxe.debug 0x7018240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/PlatformDxe.debug 0x7001240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/PciBusDxe.debug 0x6dab240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/VirtioPciDeviceDxe.debug 0x6ddf240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/Virtio10.debug 0x6dda240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/VirtioBlkDxe.debug 0x6dd6240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/VirtioScsiDxe.debug 0x6dd2240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/VirtioRngDxe.debug 0x6da7240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/ConPlatformDxe.debug 0x6da2240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/ConSplitterDxe.debug 0x6d92240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/GraphicsConsoleDxe.debug 0x6d8b240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/TerminalDxe.debug 0x6d79240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/QemuKernelLoaderFsDxe.debug 0x6d74240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/DiskIoDxe.debug 0x6d74240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/PartitionDxe.debug 0x6d6d240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/EnglishDxe.debug 0x6d88240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/ScsiBus.debug 0x6d68240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/ScsiDisk.debug 0x6d54240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/SataController.debug 0x6d84240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/AtaAtapiPassThruDxe.debug 0x6d3c240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/AtaBusDxe.debug 0x6d4d240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/NvmExpressDxe.debug 0x6d26240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/SioBusDxe.debug 0x6d64240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/PciSioSerialDxe.debug 0x6d1f240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/Ps2KeyboardDxe.debug 0x6d18240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/BootGraphicsResourceTableDxe.debug 0x6d5e240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/Fat.debug 0x6d0d240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/UdfDxe.debug 0x6d06240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/VirtioFsDxe.debug 0x6cfc240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/SnpDxe.debug 0x6cf4240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/VlanConfigDxe.debug 0x6ced240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/MnpDxe.debug 0x6ce2240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/ArpDxe.debug 0x6cdb240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/Dhcp4Dxe.debug 0x6cd0240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/Ip4Dxe.debug 0x6ca8240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/Udp4Dxe.debug 0x6cc7240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/Mtftp4Dxe.debug 0x6cbd240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/TcpDxe.debug 0x6c82240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/UefiPxeBcDxe.debug 0x6c70240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/IScsiDxe.debug 0x6c32240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/VirtioNetDxe.debug 0x6c9c240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/UhciDxe.debug 0x6c60240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/EhciDxe.debug 0x6c29240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/XhciDxe.debug 0x6c1b240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/UsbBusDxe.debug 0x6c11240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/UsbKbDxe.debug 0x6c69240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/UsbMassStorageDxe.debug 0x6c96240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/QemuVideoDxe.debug 0x6c52240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/VirtioGpuDxe.debug 0x6c0a240
+add-symbol-file /home/koenigr/Memtest/git/edk2/Build/OvmfX64/DEBUG_GCC5/X64/Shell.debug 0x6449240
diff --git a/test_code/gdbscripts/memtest_gdbscript b/test_code/gdbscripts/memtest_gdbscript
new file mode 100644
index 0000000..94a7f53
--- /dev/null
+++ b/test_code/gdbscripts/memtest_gdbscript
@@ -0,0 +1,10 @@
+add-symbol-file ../../memtest86plus_debug/build64/memtest.debug 0x201000
+b main
+
+# while loop
+b *0x21414a
+
+# supposed main
+b *0x21412a
+
+target remote localhost:1234
diff --git a/test_code/memtest_gdbscript b/test_code/memtest_gdbscript
deleted file mode 100644
index 94a7f53..0000000
--- a/test_code/memtest_gdbscript
+++ /dev/null
@@ -1,10 +0,0 @@
-add-symbol-file ../../memtest86plus_debug/build64/memtest.debug 0x201000
-b main
-
-# while loop
-b *0x21414a
-
-# supposed main
-b *0x21412a
-
-target remote localhost:1234
-- 
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