Vortragsfolien und Beispiele 24.5.2023

20230523/io-ports-and-interrupts.pdf

+../common/io-ports-and-interrupts.pdf
\ No newline at end of file

20230523/logo-hochschule-bochum-cvh-text-v2.pdf

+../common/logo-hochschule-bochum-cvh-text-v2.pdf
\ No newline at end of file

20230523/logo-hochschule-bochum.pdf

+../common/logo-hochschule-bochum.pdf
\ No newline at end of file

20230523/parameters-01.c

+#include <stdio.h>
+
+typedef char string[42];
+
+void print (string msg)
+{
+  printf ("%s\n", msg);
+}
+
+int main (void)
+{
+  string hello = "Hello, world!";
+  print (hello);
+  return 0;
+}

20230523/parameters-01.s

+	.file	"parameters-01.c"
+	.text
+	.globl	print
+	.type	print, @function
+print:
+.LFB11:
+	.cfi_startproc
+	subq	$8, %rsp
+	.cfi_def_cfa_offset 16
+	call	puts@PLT
+	addq	$8, %rsp
+	.cfi_def_cfa_offset 8
+	ret
+	.cfi_endproc
+.LFE11:
+	.size	print, .-print
+	.globl	main
+	.type	main, @function
+main:
+.LFB12:
+	.cfi_startproc
+	subq	$56, %rsp
+	.cfi_def_cfa_offset 64
+	movabsq	$8583909746840200520, %rax
+	movabsq	$143418749551, %rdx
+	movq	%rax, (%rsp)
+	movq	%rdx, 8(%rsp)
+	movq	$0, 16(%rsp)
+	movq	$0, 24(%rsp)
+	movq	$0, 32(%rsp)
+	movw	$0, 40(%rsp)
+	movq	%rsp, %rdi
+	call	puts@PLT
+	movl	$0, %eax
+	addq	$56, %rsp
+	.cfi_def_cfa_offset 8
+	ret
+	.cfi_endproc
+.LFE12:
+	.size	main, .-main
+	.ident	"GCC: (Debian 8.3.0-6) 8.3.0"
+	.section	.note.GNU-stack,"",@progbits

20230523/parameters-02.c

+#include "paramlib-02.h"
+
+int main (void)
+{
+  string hello = "Hello, world!";
+  print (hello);
+  return 0;
+}

20230523/parameters-02.s

+	.file	"parameters-02.c"
+	.text
+	.globl	main
+	.type	main, @function
+main:
+.LFB0:
+	.cfi_startproc
+	subq	$56, %rsp
+	.cfi_def_cfa_offset 64
+	movabsq	$8583909746840200520, %rax
+	movabsq	$143418749551, %rdx
+	movq	%rax, (%rsp)
+	movq	%rdx, 8(%rsp)
+	movq	$0, 16(%rsp)
+	movq	$0, 24(%rsp)
+	movq	$0, 32(%rsp)
+	movw	$0, 40(%rsp)
+	movq	%rsp, %rdi
+	call	print@PLT
+	movl	$0, %eax
+	addq	$56, %rsp
+	.cfi_def_cfa_offset 8
+	ret
+	.cfi_endproc
+.LFE0:
+	.size	main, .-main
+	.ident	"GCC: (Debian 8.3.0-6) 8.3.0"
+	.section	.note.GNU-stack,"",@progbits

20230523/parameters-03.c

+#include "paramlib-03.h"
+
+int main (void)
+{
+  print ('H', 'e', 'l', 'l', 'o', ',', ' ', 'w', 'o', 'r', 'l', 'd', '!', '\n');
+  return 0;
+}

20230523/parameters-03.s

+	.file	"parameters-03.c"
+	.text
+	.globl	main
+	.type	main, @function
+main:
+.LFB0:
+	.cfi_startproc
+	subq	$8, %rsp
+	.cfi_def_cfa_offset 16
+	pushq	$10
+	.cfi_def_cfa_offset 24
+	pushq	$33
+	.cfi_def_cfa_offset 32
+	pushq	$100
+	.cfi_def_cfa_offset 40
+	pushq	$108
+	.cfi_def_cfa_offset 48
+	pushq	$114
+	.cfi_def_cfa_offset 56
+	pushq	$111
+	.cfi_def_cfa_offset 64
+	pushq	$119
+	.cfi_def_cfa_offset 72
+	pushq	$32
+	.cfi_def_cfa_offset 80
+	movl	$44, %r9d
+	movl	$111, %r8d
+	movl	$108, %ecx
+	movl	$108, %edx
+	movl	$101, %esi
+	movl	$72, %edi
+	call	print@PLT
+	movl	$0, %eax
+	addq	$72, %rsp
+	.cfi_def_cfa_offset 8
+	ret
+	.cfi_endproc
+.LFE0:
+	.size	main, .-main
+	.ident	"GCC: (Debian 8.3.0-6) 8.3.0"
+	.section	.note.GNU-stack,"",@progbits

20230523/parameters-03.s-m32

+	.file	"parameters-03.c"
+	.text
+	.globl	main
+	.type	main, @function
+main:
+.LFB0:
+	.cfi_startproc
+	leal	4(%esp), %ecx
+	.cfi_def_cfa 1, 0
+	andl	$-16, %esp
+	pushl	-4(%ecx)
+	pushl	%ebp
+	.cfi_escape 0x10,0x5,0x2,0x75,0
+	movl	%esp, %ebp
+	pushl	%ebx
+	pushl	%ecx
+	.cfi_escape 0xf,0x3,0x75,0x78,0x6
+	.cfi_escape 0x10,0x3,0x2,0x75,0x7c
+	call	__x86.get_pc_thunk.bx
+	addl	$_GLOBAL_OFFSET_TABLE_, %ebx
+	subl	$8, %esp
+	pushl	$10
+	pushl	$33
+	pushl	$100
+	pushl	$108
+	pushl	$114
+	pushl	$111
+	pushl	$119
+	pushl	$32
+	pushl	$44
+	pushl	$111
+	pushl	$108
+	pushl	$108
+	pushl	$101
+	pushl	$72
+	call	print@PLT
+	addl	$64, %esp
+	movl	$0, %eax
+	leal	-8(%ebp), %esp
+	popl	%ecx
+	.cfi_restore 1
+	.cfi_def_cfa 1, 0
+	popl	%ebx
+	.cfi_restore 3
+	popl	%ebp
+	.cfi_restore 5
+	leal	-4(%ecx), %esp
+	.cfi_def_cfa 4, 4
+	ret
+	.cfi_endproc
+.LFE0:
+	.size	main, .-main
+	.section	.text.__x86.get_pc_thunk.bx,"axG",@progbits,__x86.get_pc_thunk.bx,comdat
+	.globl	__x86.get_pc_thunk.bx
+	.hidden	__x86.get_pc_thunk.bx
+	.type	__x86.get_pc_thunk.bx, @function
+__x86.get_pc_thunk.bx:
+.LFB1:
+	.cfi_startproc
+	movl	(%esp), %ebx
+	ret
+	.cfi_endproc
+.LFE1:
+	.ident	"GCC: (Debian 8.3.0-6) 8.3.0"
+	.section	.note.GNU-stack,"",@progbits

20230523/parameters-04.c

+#include "paramlib-04.h"
+
+int main (void)
+{
+  print ("Hä?", 'H', 'e', 'l', 'l', 'o', ',', ' ', 'w', 'o', 'r', 'l', 'd', '!', '\n');
+  return 0;
+}

20230523/paramlib-02.c

+#include <stdio.h>
+#include "paramlib-02.h"
+
+void print (string msg)
+{
+  printf ("%s\n", msg);
+}

20230523/paramlib-02.h

+typedef char string[42];
+
+extern void print (string msg);

20230523/paramlib-03.c

+#include <stdio.h>
+
+void print (int h, int e, int l1, int l2, int o1,
+            int comma, int space,
+            int w, int o2, int r, int l3, int d,
+            int bang, int newline)
+{
+  printf ("%c%c%c%c%c%c%c%c%c%c%c%c%c%c",
+          h, e, l1, l2, o1, comma, space, w, o2, r, l3, d, bang, newline);
+}

20230523/paramlib-03.h

+extern void print (int h, int e, int l1, int l2, int o1,
+                   int comma, int space,
+                   int w, int o2, int r, int l3, int d,
+                   int bang, int newline);

20230523/paramlib-03.s

+	.file	"paramlib-03.c"
+	.text
+	.section	.rodata.str1.1,"aMS",@progbits,1
+.LC0:
+	.string	"%c%c%c%c%c%c%c%c%c%c%c%c%c%c"
+	.text
+	.globl	print
+	.type	print, @function
+print:
+.LFB11:
+	.cfi_startproc
+	subq	$16, %rsp
+	.cfi_def_cfa_offset 24
+	movl	80(%rsp), %eax
+	pushq	%rax
+	.cfi_def_cfa_offset 32
+	movl	80(%rsp), %eax
+	pushq	%rax
+	.cfi_def_cfa_offset 40
+	movl	80(%rsp), %eax
+	pushq	%rax
+	.cfi_def_cfa_offset 48
+	movl	80(%rsp), %eax
+	pushq	%rax
+	.cfi_def_cfa_offset 56
+	movl	80(%rsp), %eax
+	pushq	%rax
+	.cfi_def_cfa_offset 64
+	movl	80(%rsp), %eax
+	pushq	%rax
+	.cfi_def_cfa_offset 72
+	movl	80(%rsp), %eax
+	pushq	%rax
+	.cfi_def_cfa_offset 80
+	movl	80(%rsp), %eax
+	pushq	%rax
+	.cfi_def_cfa_offset 88
+	pushq	%r9
+	.cfi_def_cfa_offset 96
+	movl	%r8d, %r9d
+	movl	%ecx, %r8d
+	movl	%edx, %ecx
+	movl	%esi, %edx
+	movl	%edi, %esi
+	leaq	.LC0(%rip), %rdi
+	movl	$0, %eax
+	call	printf@PLT
+	addq	$88, %rsp
+	.cfi_def_cfa_offset 8
+	ret
+	.cfi_endproc
+.LFE11:
+	.size	print, .-print
+	.ident	"GCC: (Debian 8.3.0-6) 8.3.0"
+	.section	.note.GNU-stack,"",@progbits

20230523/paramlib-03.s-m32

+	.file	"paramlib-03.c"
+	.text
+	.section	.rodata.str1.1,"aMS",@progbits,1
+.LC0:
+	.string	"%c%c%c%c%c%c%c%c%c%c%c%c%c%c"
+	.text
+	.globl	print
+	.type	print, @function
+print:
+.LFB11:
+	.cfi_startproc
+	pushl	%ebx
+	.cfi_def_cfa_offset 8
+	.cfi_offset 3, -8
+	subl	$12, %esp
+	.cfi_def_cfa_offset 20
+	call	__x86.get_pc_thunk.bx
+	addl	$_GLOBAL_OFFSET_TABLE_, %ebx
+	pushl	72(%esp)
+	.cfi_def_cfa_offset 24
+	pushl	72(%esp)
+	.cfi_def_cfa_offset 28
+	pushl	72(%esp)
+	.cfi_def_cfa_offset 32
+	pushl	72(%esp)
+	.cfi_def_cfa_offset 36
+	pushl	72(%esp)
+	.cfi_def_cfa_offset 40
+	pushl	72(%esp)
+	.cfi_def_cfa_offset 44
+	pushl	72(%esp)
+	.cfi_def_cfa_offset 48
+	pushl	72(%esp)
+	.cfi_def_cfa_offset 52
+	pushl	72(%esp)
+	.cfi_def_cfa_offset 56
+	pushl	72(%esp)
+	.cfi_def_cfa_offset 60
+	pushl	72(%esp)
+	.cfi_def_cfa_offset 64
+	pushl	72(%esp)
+	.cfi_def_cfa_offset 68
+	pushl	72(%esp)
+	.cfi_def_cfa_offset 72
+	pushl	72(%esp)
+	.cfi_def_cfa_offset 76
+	leal	.LC0@GOTOFF(%ebx), %eax
+	pushl	%eax
+	.cfi_def_cfa_offset 80
+	call	printf@PLT
+	addl	$72, %esp
+	.cfi_def_cfa_offset 8
+	popl	%ebx
+	.cfi_restore 3
+	.cfi_def_cfa_offset 4
+	ret
+	.cfi_endproc
+.LFE11:
+	.size	print, .-print
+	.section	.text.__x86.get_pc_thunk.bx,"axG",@progbits,__x86.get_pc_thunk.bx,comdat
+	.globl	__x86.get_pc_thunk.bx
+	.hidden	__x86.get_pc_thunk.bx
+	.type	__x86.get_pc_thunk.bx, @function
+__x86.get_pc_thunk.bx:
+.LFB12:
+	.cfi_startproc
+	movl	(%esp), %ebx
+	ret
+	.cfi_endproc
+.LFE12:
+	.ident	"GCC: (Debian 8.3.0-6) 8.3.0"
+	.section	.note.GNU-stack,"",@progbits

20230523/paramlib-04.c

+#include <stdio.h>
+
+void print (char *Hae,
+            int h, int e, int l1, int l2, int o1,
+            int comma, int space,
+            int w, int o2, int r, int l3, int d,
+            int bang, int newline)
+{
+  printf ("%c%c%c%c%c%c%c%c%c%c%c%c%c%c",
+          h, e, l1, l2, o1, comma, space, w, o2, r, l3, d, bang, newline);
+}

20230523/paramlib-04.h

+extern void print (char *Hae,
+                   int h, int e, int l1, int l2, int o1,
+                   int comma, int space,
+                   int w, int o2, int r, int l3, int d,
+                   int bang, int newline);

20230523/paramlib-04.s

+	.file	"paramlib-04.c"
+	.text
+	.section	.rodata.str1.1,"aMS",@progbits,1
+.LC0:
+	.string	"%c%c%c%c%c%c%c%c%c%c%c%c%c%c"
+	.text
+	.globl	print
+	.type	print, @function
+print:
+.LFB11:
+	.cfi_startproc
+	subq	$16, %rsp
+	.cfi_def_cfa_offset 24
+	movl	88(%rsp), %eax
+	pushq	%rax
+	.cfi_def_cfa_offset 32
+	movl	88(%rsp), %eax
+	pushq	%rax
+	.cfi_def_cfa_offset 40
+	movl	88(%rsp), %eax
+	pushq	%rax
+	.cfi_def_cfa_offset 48
+	movl	88(%rsp), %eax
+	pushq	%rax
+	.cfi_def_cfa_offset 56
+	movl	88(%rsp), %eax
+	pushq	%rax
+	.cfi_def_cfa_offset 64
+	movl	88(%rsp), %eax
+	pushq	%rax
+	.cfi_def_cfa_offset 72
+	movl	88(%rsp), %eax
+	pushq	%rax
+	.cfi_def_cfa_offset 80
+	movl	88(%rsp), %eax
+	pushq	%rax
+	.cfi_def_cfa_offset 88
+	movl	88(%rsp), %eax
+	pushq	%rax
+	.cfi_def_cfa_offset 96
+	leaq	.LC0(%rip), %rdi
+	movl	$0, %eax
+	call	printf@PLT
+	addq	$88, %rsp
+	.cfi_def_cfa_offset 8
+	ret
+	.cfi_endproc
+.LFE11:
+	.size	print, .-print
+	.ident	"GCC: (Debian 8.3.0-6) 8.3.0"
+	.section	.note.GNU-stack,"",@progbits