Lehrmaterialien und Beispiele 29.6.2019

20190329/blink-1.elf.s

+
+blink-1.elf:     file format elf32-avr
+
+
+Disassembly of section .text:
+
+00000000 <__vectors>:
+   0:	0c 94 34 00 	jmp	0x68	; 0x68 <__ctors_end>
+   4:	0c 94 3e 00 	jmp	0x7c	; 0x7c <__bad_interrupt>
+   8:	0c 94 3e 00 	jmp	0x7c	; 0x7c <__bad_interrupt>
+   c:	0c 94 3e 00 	jmp	0x7c	; 0x7c <__bad_interrupt>
+  10:	0c 94 3e 00 	jmp	0x7c	; 0x7c <__bad_interrupt>
+  14:	0c 94 3e 00 	jmp	0x7c	; 0x7c <__bad_interrupt>
+  18:	0c 94 3e 00 	jmp	0x7c	; 0x7c <__bad_interrupt>
+  1c:	0c 94 3e 00 	jmp	0x7c	; 0x7c <__bad_interrupt>
+  20:	0c 94 3e 00 	jmp	0x7c	; 0x7c <__bad_interrupt>
+  24:	0c 94 3e 00 	jmp	0x7c	; 0x7c <__bad_interrupt>
+  28:	0c 94 3e 00 	jmp	0x7c	; 0x7c <__bad_interrupt>
+  2c:	0c 94 3e 00 	jmp	0x7c	; 0x7c <__bad_interrupt>
+  30:	0c 94 3e 00 	jmp	0x7c	; 0x7c <__bad_interrupt>
+  34:	0c 94 3e 00 	jmp	0x7c	; 0x7c <__bad_interrupt>
+  38:	0c 94 3e 00 	jmp	0x7c	; 0x7c <__bad_interrupt>
+  3c:	0c 94 3e 00 	jmp	0x7c	; 0x7c <__bad_interrupt>
+  40:	0c 94 3e 00 	jmp	0x7c	; 0x7c <__bad_interrupt>
+  44:	0c 94 3e 00 	jmp	0x7c	; 0x7c <__bad_interrupt>
+  48:	0c 94 3e 00 	jmp	0x7c	; 0x7c <__bad_interrupt>
+  4c:	0c 94 3e 00 	jmp	0x7c	; 0x7c <__bad_interrupt>
+  50:	0c 94 3e 00 	jmp	0x7c	; 0x7c <__bad_interrupt>
+  54:	0c 94 3e 00 	jmp	0x7c	; 0x7c <__bad_interrupt>
+  58:	0c 94 3e 00 	jmp	0x7c	; 0x7c <__bad_interrupt>
+  5c:	0c 94 3e 00 	jmp	0x7c	; 0x7c <__bad_interrupt>
+  60:	0c 94 3e 00 	jmp	0x7c	; 0x7c <__bad_interrupt>
+  64:	0c 94 3e 00 	jmp	0x7c	; 0x7c <__bad_interrupt>
+
+00000068 <__ctors_end>:
+  68:	11 24       	eor	r1, r1
+  6a:	1f be       	out	0x3f, r1	; 63
+  6c:	cf ef       	ldi	r28, 0xFF	; 255
+  6e:	d8 e0       	ldi	r29, 0x08	; 8
+  70:	de bf       	out	0x3e, r29	; 62
+  72:	cd bf       	out	0x3d, r28	; 61
+  74:	0e 94 40 00 	call	0x80	; 0x80 <main>
+  78:	0c 94 57 00 	jmp	0xae	; 0xae <_exit>
+
+0000007c <__bad_interrupt>:
+  7c:	0c 94 00 00 	jmp	0	; 0x0 <__vectors>
+
+00000080 <main>:
+  80:	81 e0       	ldi	r24, 0x01	; 1
+  82:	8a b9       	out	0x0a, r24	; 10
+  84:	58 9a       	sbi	0x0b, 0	; 11
+  86:	2f ef       	ldi	r18, 0xFF	; 255
+  88:	89 e6       	ldi	r24, 0x69	; 105
+  8a:	98 e1       	ldi	r25, 0x18	; 24
+  8c:	21 50       	subi	r18, 0x01	; 1
+  8e:	80 40       	sbci	r24, 0x00	; 0
+  90:	90 40       	sbci	r25, 0x00	; 0
+  92:	e1 f7       	brne	.-8      	; 0x8c <main+0xc>
+  94:	00 c0       	rjmp	.+0      	; 0x96 <main+0x16>
+  96:	00 00       	nop
+  98:	58 98       	cbi	0x0b, 0	; 11
+  9a:	2f ef       	ldi	r18, 0xFF	; 255
+  9c:	89 e6       	ldi	r24, 0x69	; 105
+  9e:	98 e1       	ldi	r25, 0x18	; 24
+  a0:	21 50       	subi	r18, 0x01	; 1
+  a2:	80 40       	sbci	r24, 0x00	; 0
+  a4:	90 40       	sbci	r25, 0x00	; 0
+  a6:	e1 f7       	brne	.-8      	; 0xa0 <main+0x20>
+  a8:	00 c0       	rjmp	.+0      	; 0xaa <main+0x2a>
+  aa:	00 00       	nop
+  ac:	eb cf       	rjmp	.-42     	; 0x84 <main+0x4>
+
+000000ae <_exit>:
+  ae:	f8 94       	cli
+
+000000b0 <__stop_program>:
+  b0:	ff cf       	rjmp	.-2      	; 0xb0 <__stop_program>

20190628/hardlinks-1.log

+cassini/home/peter/bo/2019ss/bs/20190628> ln hello-1.c hello.c
+cassini/home/peter/bo/2019ss/bs/20190628> ls -l
+insgesamt 148
+-rw-r----- 2 peter peter    83 Jun 27 15:59 hello-1.c
+-rw-r--r-- 1 peter peter   442 Jun 27 22:51 hello-1.s
+-rw-r--r-- 1 peter peter   110 Jun 27 16:08 hello-2.c
+-rw-r--r-- 1 peter peter 85304 Jun 27 16:11 hello-2.o
+-rw-r--r-- 1 peter peter    90 Jun 27 15:59 hello-3.c
+-rw-r--r-- 1 peter peter   112 Jun 27 16:28 hello-4.c
+-rw-r--r-- 1 peter peter  1640 Jun 27 16:29 hello-4.o
+-rw-r--r-- 1 peter peter   880 Jun 27 22:54 hello-5.o
+-rw-r--r-- 1 peter peter   386 Jun 27 22:54 hello-5.s
+-rw-r--r-- 1 peter peter   104 Jun 27 22:56 hello-6.c
+-rw-r--r-- 1 peter peter  1640 Jun 27 22:56 hello-6.o
+-rw-r--r-- 1 peter peter   560 Jun 27 22:57 hello-6.s
+-rw-r----- 2 peter peter    83 Jun 27 15:59 hello.c
+lrwxrwxrwx 1 peter peter     2 Jun 28 10:26 pruzzel -> ..
+-rw-r--r-- 1 peter peter  1033 Jun 27 16:26 SCRATCH
+-rw-r--r-- 1 peter peter  1056 Jun 28 10:25 symlinks-1.log
+-rw-r--r-- 1 peter peter   750 Jun 28 10:26 symlinks-2.log
+-rw-r--r-- 1 peter peter  1436 Jun 28 10:28 symlinks-3.log

20190628/hardlinks-2.log

+cassini/home/peter/bo/2019ss/bs/20190628> rm hello-1.c
+cassini/home/peter/bo/2019ss/bs/20190628> ls -l
+insgesamt 148
+-rw-r--r-- 1 peter peter  1112 Jun 28 10:29 hardlinks-1.log
+-rw-r--r-- 1 peter peter   442 Jun 27 22:51 hello-1.s
+-rw-r--r-- 1 peter peter   110 Jun 27 16:08 hello-2.c
+-rw-r--r-- 1 peter peter 85304 Jun 27 16:11 hello-2.o
+-rw-r--r-- 1 peter peter    90 Jun 27 15:59 hello-3.c
+-rw-r--r-- 1 peter peter   112 Jun 27 16:28 hello-4.c
+-rw-r--r-- 1 peter peter  1640 Jun 27 16:29 hello-4.o
+-rw-r--r-- 1 peter peter   880 Jun 27 22:54 hello-5.o
+-rw-r--r-- 1 peter peter   386 Jun 27 22:54 hello-5.s
+-rw-r--r-- 1 peter peter   104 Jun 27 22:56 hello-6.c
+-rw-r--r-- 1 peter peter  1640 Jun 27 22:56 hello-6.o
+-rw-r--r-- 1 peter peter   560 Jun 27 22:57 hello-6.s
+-rw-r--r-- 1 peter peter    83 Jun 27 15:59 hello.c
+lrwxrwxrwx 1 peter peter     2 Jun 28 10:26 pruzzel -> ..
+-rw-r--r-- 1 peter peter  1033 Jun 27 16:26 SCRATCH
+-rw-r--r-- 1 peter peter  1056 Jun 28 10:25 symlinks-1.log
+-rw-r--r-- 1 peter peter   750 Jun 28 10:26 symlinks-2.log
+-rw-r--r-- 1 peter peter  1436 Jun 28 10:28 symlinks-3.log
+cassini/home/peter/bo/2019ss/bs/20190628> cat hello.c
+#include <stdio.h>
+
+int hello (void)
+{
+  printf ("Hello, world!\n");
+  return 0;
+}

20190628/hardlinks-3.log

+cassini/home/peter/bo/2019ss/bs/20190628> ln hello.c hello-1.c
+cassini/home/peter/bo/2019ss/bs/20190628> ln hello.c hello-1a.c
+cassini/home/peter/bo/2019ss/bs/20190628> ln hello.c hello-1b.c
+cassini/home/peter/bo/2019ss/bs/20190628> ls -l
+insgesamt 164
+-rw-r--r-- 1 peter peter  1112 Jun 28 10:29 hardlinks-1.log
+-rw-r--r-- 1 peter peter  1247 Jun 28 10:31 hardlinks-2.log
+-rw-r--r-- 4 peter peter    83 Jun 27 15:59 hello-1a.c
+-rw-r--r-- 4 peter peter    83 Jun 27 15:59 hello-1b.c
+-rw-r--r-- 4 peter peter    83 Jun 27 15:59 hello-1.c
+-rw-r--r-- 1 peter peter   442 Jun 27 22:51 hello-1.s
+-rw-r--r-- 1 peter peter   110 Jun 27 16:08 hello-2.c
+-rw-r--r-- 1 peter peter 85304 Jun 27 16:11 hello-2.o
+-rw-r--r-- 1 peter peter    90 Jun 27 15:59 hello-3.c
+-rw-r--r-- 1 peter peter   112 Jun 27 16:28 hello-4.c
+-rw-r--r-- 1 peter peter  1640 Jun 27 16:29 hello-4.o
+-rw-r--r-- 1 peter peter   880 Jun 27 22:54 hello-5.o
+-rw-r--r-- 1 peter peter   386 Jun 27 22:54 hello-5.s
+-rw-r--r-- 1 peter peter   104 Jun 27 22:56 hello-6.c
+-rw-r--r-- 1 peter peter  1640 Jun 27 22:56 hello-6.o
+-rw-r--r-- 1 peter peter   560 Jun 27 22:57 hello-6.s
+-rw-r--r-- 4 peter peter    83 Jun 27 15:59 hello.c
+lrwxrwxrwx 1 peter peter     2 Jun 28 10:26 pruzzel -> ..
+-rw-r--r-- 1 peter peter  1033 Jun 27 16:26 SCRATCH
+-rw-r--r-- 1 peter peter  1056 Jun 28 10:25 symlinks-1.log
+-rw-r--r-- 1 peter peter   750 Jun 28 10:26 symlinks-2.log
+-rw-r--r-- 1 peter peter  1436 Jun 28 10:28 symlinks-3.log

20190628/hardlinks-4.log

+cassini/home/peter/bo/2019ss/bs/20190628> ls -li
+insgesamt 156
+2156751 -rw-r--r-- 1 peter peter  1112 Jun 28 10:29 hardlinks-1.log
+2156754 -rw-r--r-- 1 peter peter  1247 Jun 28 10:31 hardlinks-2.log
+2156752 -rw-r--r-- 1 peter peter  1470 Jun 28 10:32 hardlinks-3.log
+2156732 -rw-r--r-- 1 peter peter   442 Jun 27 22:51 hello-1.s
+2156715 -rw-r--r-- 1 peter peter   110 Jun 27 16:08 hello-2.c
+2156585 -rw-r--r-- 1 peter peter 85304 Jun 27 16:11 hello-2.o
+2156704 -rw-r--r-- 1 peter peter    90 Jun 27 15:59 hello-3.c
+2156725 -rw-r--r-- 1 peter peter   112 Jun 27 16:28 hello-4.c
+2156712 -rw-r--r-- 1 peter peter  1640 Jun 27 16:29 hello-4.o
+2156728 -rw-r--r-- 1 peter peter   880 Jun 27 22:54 hello-5.o
+2156745 -rw-r--r-- 1 peter peter   386 Jun 27 22:54 hello-5.s
+2156744 -rw-r--r-- 1 peter peter   104 Jun 27 22:56 hello-6.c
+2156743 -rw-r--r-- 1 peter peter  1640 Jun 27 22:56 hello-6.o
+2156742 -rw-r--r-- 1 peter peter   560 Jun 27 22:57 hello-6.s
+2156714 -rw-r--r-- 2 peter peter    83 Jun 27 15:59 hello.c
+2156748 lrwxrwxrwx 1 peter peter     2 Jun 28 10:26 pruzzel -> ..
+2156711 -rw-r--r-- 1 peter peter  1033 Jun 27 16:26 SCRATCH
+2156746 -rw-r--r-- 1 peter peter  1056 Jun 28 10:25 symlinks-1.log
+2156522 -rw-r--r-- 1 peter peter   750 Jun 28 10:26 symlinks-2.log
+2156750 -rw-r--r-- 1 peter peter  1436 Jun 28 10:28 symlinks-3.log
+cassini/home/peter/bo/2019ss/bs/20190628> ls -li /tmp/hello-1.c
+2156714 -rw-r--r-- 2 peter peter 83 Jun 27 15:59 /tmp/hello-1.c

20190628/hardlinks-5.log

+cassini/home/peter/bo/2019ss/bs/20190607> ls -la
+insgesamt 1044
+drwxr-xr-x  3 peter peter   4096 Jun 14 08:57 .
+drwxr-xr-x 13 peter peter   4096 Jun 28 10:50 ..
+drwxr-xr-x  4 peter peter   4096 Jun  7 11:57 Abgabe
+-rw-r--r--  1 peter peter     17 Okt  9  2016 crash.c
+-rw-r--r--  1 peter peter    169 Jun  7 10:43 fak-1.c
+-rw-r--r--  1 peter peter   1369 Jun  7 11:02 fak-1.s
+-rw-r--r--  1 peter peter   2660 Jun  7 10:37 gdb-hello-1.log
+-rw-r--r--  1 peter peter     82 Jun  7 10:26 hello-1.c
+-rw-r--r--  1 peter peter    717 Jun  7 10:27 hello-1.s
+-rw-r--r--  1 peter peter 156772 Jun  7 13:30 photo-20190607-133025.jpg
+-rw-r--r--  1 peter peter 156199 Jun  7 13:32 photo-20190607-133131.jpg
+-rw-r--r--  1 peter peter 147075 Jun  7 13:32 photo-20190607-133241.jpg
+-rw-r--r--  1 peter peter 163742 Jun  7 13:33 photo-20190607-133301.jpg
+-rw-r--r--  1 peter peter 145606 Jun  7 13:34 photo-20190607-133353.jpg
+-rw-r--r--  1 peter peter 163808 Jun  7 13:35 photo-20190607-133443.jpg
+-rw-r--r--  1 peter peter   2472 Jun  7 14:11 SCRATCH
+-rw-r--r--  1 peter peter  67598 Jun  7 11:24 segments-1.png
+-rw-r--r--  1 peter peter    124 Jun  7 11:38 strings-1.c
+-rw-r--r--  1 peter peter    125 Jun  7 11:41 strings-2.c
+-rw-r--r--  1 peter peter    132 Jun  7 11:44 strings-3.c
+-rw-r--r--  1 peter peter    195 Jun  7 11:46 strings-4.c
+cassini/home/peter/bo/2019ss/bs/20190607> cd ..
+cassini/home/peter/bo/2019ss/bs> ls
+20190329  20190405  20190412  20190426  20190503  20190510  20190607  20190614  20190628  common  script

20190628/hello-0.c

+#include <stdio.h>
+
+int main (void)
+{
+  printf ("Hello, world!\n");
+  return 0;
+}

20190628/hello-1.c

+#include <stdio.h>
+
+int hello (void)
+{
+  printf ("Hello, world!\n");
+  return 0;
+}

20190628/hello-1.s

+	.file	"hello-1.c"
+	.section	.rodata.str1.1,"aMS",@progbits,1
+.LC0:
+	.string	"Hello, world!"
+	.text
+	.globl	hello
+	.type	hello, @function
+hello:
+.LFB11:
+	.cfi_startproc
+	subq	$8, %rsp
+	.cfi_def_cfa_offset 16
+	leaq	.LC0(%rip), %rdi
+	call	puts@PLT
+	movl	$0, %eax
+	addq	$8, %rsp
+	.cfi_def_cfa_offset 8
+	ret
+	.cfi_endproc
+.LFE11:
+	.size	hello, .-hello
+	.ident	"GCC: (Debian 6.3.0-18+deb9u1) 6.3.0 20170516"
+	.section	.note.GNU-stack,"",@progbits

20190628/hello-2.c

+#include <unistd.h>
+#include <stdlib.h>
+
+int hello (void)
+{
+  write (1, "Hello, world!\n", 14);
+  exit (0);
+}

20190628/hello-3.c

+#include <unistd.h>
+
+int hello (void)
+{
+  write (1, "Hello, world!\n", 14);
+  return 0;
+}

20190628/hello-4.c

+#include <unistd.h>
+#include <stdlib.h>
+
+void _start (void)
+{
+  write (1, "Hello, world!\n", 14);
+  exit (0);
+}

20190628/hello-5.s

+msg:
+    .string "Hello, world!\n"
+
+    .globl _start
+_start:
+    movq $1, %rax   # use the write syscall
+    movq $1, %rdi   # write to stdout
+    movq $msg, %rsi # use string "Hello World!\n"
+    movq $14, %rdx  # write 14 characters
+    syscall         # make syscall
+
+    movq $60, %rax  # use the _exit syscall
+    movq $0, %rdi   # error code 0
+    syscall         # make syscall

20190628/hello-6.c

+#include <unistd.h>
+
+void _start (void)
+{
+  syscall (1, 1, "Hello, World!\n", 14);
+  syscall (60, 0);
+}

20190628/hello-6.s

+	.file	"hello-6.c"
+	.section	.rodata.str1.1,"aMS",@progbits,1
+.LC0:
+	.string	"Hello, World!\n"
+	.text
+	.globl	_start
+	.type	_start, @function
+_start:
+.LFB0:
+	.cfi_startproc
+	subq	$8, %rsp
+	.cfi_def_cfa_offset 16
+	movl	$14, %ecx
+	leaq	.LC0(%rip), %rdx
+	movl	$1, %esi
+	movl	$1, %edi
+	movl	$0, %eax
+	call	syscall@PLT
+	movl	$0, %esi
+	movl	$60, %edi
+	movl	$0, %eax
+	call	syscall@PLT
+	addq	$8, %rsp
+	.cfi_def_cfa_offset 8
+	ret
+	.cfi_endproc
+.LFE0:
+	.size	_start, .-_start
+	.ident	"GCC: (Debian 6.3.0-18+deb9u1) 6.3.0 20170516"
+	.section	.note.GNU-stack,"",@progbits