Converted xeh to Hex

exec_enable.hex

@@ -29,7 +29,7 @@ F0 01 00 00 00 00 00 00 ## e_shoff Address of section header table
 05 00 00 00         ## Flags
 00 00 00 00 00 00 00 00 ## p_offset
 00 00 40 00 00 00 00 00 ## p_vaddr
-00 00 40 00 00 00 00 00 ## Undefined
+00 00 00 00 00 00 00 00 ## Undefined
 B1 00 00 00 00 00 00 00 ## p_filesz
 B1 00 00 00 00 00 00 00 ## p_memsz
 00 00 20 00 00 00 00 00 ## Required alignment

read.s

@@ -0,0 +1,76 @@
+.data
+# we must export the entry point to the ELF linker or loader.
+# They convientionally recognize _start as their entry point.
+# Use ld -e main to override the default if you wish
+.global _start
+
+_start:
+
+	# first check that we got the correct number of inputs
+	pop	%rax		# Get the number of arguments
+	pop	%rdi		# Get the program name
+	pop	%rdi		# Get the actual argument
+
+	# Check if we have the correct number of inputs
+	cmp	$2, %rax
+
+	# Jump to Bail if the number is not correct
+	jne	Bail
+
+	# attempt to open the file for reading
+	mov	$0, %rsi	# prepare read_only
+				# we already have what we need in ebx
+	mov $2, %rax		# the syscall number for open()
+	syscall		# call the Kernel
+
+	# Check if we have a valid file
+	test	%rax, %rax
+
+	# Jump to Bail_file if not actual file
+	js	Bail
+
+	mov %rax, %rdi	# move the pointer to the right location
+
+Circle:	#print contents of file
+
+	mov $read_size, %rdx	# set the size of chars we want
+	mov $buffer, %rsi	# Where to put it
+				# We already have what we need in ebx
+	mov $0, %rax		# the syscall number for read
+	syscall		# call the Kernel
+
+	test %rax, %rax	# check what we got
+	jz Done		# Got EOF call it done
+
+	# Make sure we don't write a bunch of NULLs
+	mov %rax, %rdx
+
+	# get file pointer out of the way
+	movq %rdi, %rsp
+
+				# edx was already setup
+	mov $1, %rdi		# setup stdout write
+	mov $1, %rax		# setup the write
+	syscall			# call the Kernel
+
+	#now to prepare for next loop
+	movq %rsp, %rdi
+	jmp Circle
+
+Done:
+	# program completed Successfully
+	mov	$0, %rdi	# All is well
+	mov	$60, %rax	# put the exit syscall number in eax
+	syscall		# Call it a good day
+
+Bail:
+	# terminate with an error
+	mov	$1, %rdi	# there was an error
+	mov	$60, %rax	# put the exit syscall number in eax
+	syscall		# bail out
+
+# Our writable space
+# 2^ 30 Should be enough per read
+read_size = 1073741824
+buffer:
+	.space 1

xeh1.hex

@@ -0,0 +1,71 @@
+## ELF Header
+7F 45 4C 46        ## e_ident[EI_MAG0-3] ELF's magic number
+02                 ## e_ident[EI_CLASS] Indicating 64 bit
+01                 ## e_ident[EI_DATA] Indicating little endianness
+01                 ## e_ident[EI_VERSION] Indicating original elf
+00                 ## e_ident[EI_OSABI] Set at 0 because none cares
+00                 ## e_ident[EI_ABIVERSION] See above
+00 00 00 00 00 00 00 ## e_ident[EI_PAD]
+02 00              ## e_type Indicating Executable
+3E 00              ## e_machine Indicating AMD64
+01 00 00 00        ## e_version Indicating original elf
+78 00 60 00 00 00 00 00
+40 00 00 00 00 00 00 00 ## e_phoff Address of program header table
+30 01 00 00 00 00 00 00
+00 00 00 00        ## e_flags
+40 00              ## e_ehsize Indicating our 64 Byte header
+38 00              ## e_phentsize size of a program header table
+01 00              ## e_phnum number of entries in program table
+00 00              ## e_shentsize size of a section header table
+00 00              ## e_shnum number of entries in section table
+00 00              ## e_shstrndx index of the section names
+
+## Program Header table
+01 00 00 00             ## p_type
+06 00 00 00             ## Flags
+00 00 00 00 00 00 00 00 ## p_offset
+00 00 60 00 00 00 00 00 ## p_vaddr
+00 00 00 00 00 00 00 00 ## Undefined
+18 01 00 00 00 00 00 00 ## p_filesz
+18 01 00 00 00 00 00 00 ## p_memsz
+00 00 20 00 00 00 00 00 ## Required alignment
+
+
+## Start
+48 c7 c2 01 00 00 00 #	mov    $0x1,%rdx
+48 c7 c6 17 01 60 00 #	mov    $0x600117,%rsi
+48 c7 c7 00 00 00 00 #	mov    $0x0,%rdi
+48 c7 c0 00 00 00 00 #	mov    $0x0,%rax
+0f 05                #	syscall
+48 85 c0             #	test   %rax,%rax
+74 5b                #	je     6000f6 <Done>
+8a 04 25 17 01 60 00 #	mov    0x600117,%al
+4c 0f b6 e0          #	movzbq %al,%r12
+4c 0f b6 e8          #	movzbq %al,%r13
+49 c1 ec 04          #	shr    $0x4,%r12
+49 83 e5 0f          #	and    $0xf,%r13
+49 81 c4 06 01 60 00 #	add    $0x600106,%r12
+49 81 c5 06 01 60 00 #	add    $0x600106,%r13
+48 c7 c2 01 00 00 00 #	mov    $0x1,%rdx
+4c 89 e6             #	mov    %r12,%rsi
+48 c7 c7 01 00 00 00 #	mov    $0x1,%rdi
+48 c7 c0 01 00 00 00 #	mov    $0x1,%rax
+0f 05                #	syscall
+48 c7 c2 01 00 00 00 #	mov    $0x1,%rdx
+4c 89 ee             #	mov    %r13,%rsi
+48 c7 c7 01 00 00 00 #	mov    $0x1,%rdi
+48 c7 c0 01 00 00 00 #	mov    $0x1,%rax
+0f 05                #	syscall
+eb 82                #	jmp    600078 <_start>
+
+
+## Done
+48 c7 c7 00 00 00 00 #	mov    $0x0,%rdi
+48 c7 c0 3c 00 00 00 #	mov    $0x3c,%rax
+0f 05                #	syscall
+
+## Hex output chars
+30 31 32 33 34 35 36 37 38 39 41 42 43 44 45 46 0A
+
+## Where the byte we are reading is shoved
+00

xeh1.s

@@ -1,7 +1,4 @@
-.text # section declaration
-output:	.byte 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x0A
-
-	
+.data
 # we must export the entry point to the ELF linker or loader.
 # They convientionally recognize _start as their entry point.
 # Use ld -e main to override the default if you wish
@@ -14,7 +11,7 @@ loop:
 	mov $input, %rsi	# Where to put it
 	mov $0, %rdi		# Where are we reading from
 	mov $0, %rax		# the syscall number for read
-	syscall			# call the Kernel
+	syscall		# call the Kernel
 
 	# If we didn't read any bytes jump to Done
 	test %rax, %rax		# check what we got
@@ -32,32 +29,29 @@ loop:
 	# add our base pointer
 	add $output, %r12	# Use that as our index into our array
 	add $output, %r13	# Use that as our index into our array
-	
+
 	# Print our first Hex
 	mov $1, %rdx		# set the size of chars we want
 	mov %r12, %rsi		# What we are writing
 	mov $1, %rdi		# Stdout File Descriptor
 	mov $1, %rax		# the syscall number for write
-	syscall			# call the Kernel
+	syscall		# call the Kernel
 
 	# Print our second Hex
 	mov $1, %rdx		# set the size of chars we want
 	mov %r13, %rsi		# What we are writing
 	mov $1, %rdi		# Stdout File Descriptor
 	mov $1, %rax		# the syscall number for write
-	syscall			# call the Kernel	
+	syscall		# call the Kernel
 	jmp loop
 
-Done:	
+Done:
 	# program completed Successfully
 	mov	$0, %rdi	# All is well
 	mov	$60, %rax	# put the exit syscall number in eax
-	syscall			# Call it a good day
-	
-.data
-	
+	syscall		# Call it a good day
+
 write_size = 2
+output: .byte 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x0A
 input:
 	.byte write_size
-
-