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Can I read label value in assembly?


Can I read label value in assembly?

By : Ahmed Hamzawy
Date : November 19 2020, 01:01 AM
To fix the issue you can do What you show will work in e.g. nasm, but the result may not be what you expect.
A little more information into what you're writing would help this answer be more specific. (Typical user-mode ELF application? Stand-alone binary blob? Something else?)
code :
    call .getbase
.getbase:
    pop ebx
    sub ebx, .getbase

    ;; Now ebx has the base address of your linked application/blob

some_label:
    mov eax, some_label
    add eax, ebx

    ;; Now eax has the (run-time) address of some_label
some_lable:
    lea rax, [rel some_label]


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What is the difference between =label (equals sign) and [label] (brackets) in ARMv6 assembly?

What is the difference between =label (equals sign) and [label] (brackets) in ARMv6 assembly?


By : Ahmet
Date : March 29 2020, 07:55 AM
around this issue I'm following along with the Baking Pi course from Cambridge University, in which a simple operating system is built in the ARMv6 instruction set, targeting the Raspberry Pi.
code :
ldr r0,=something
...
something:
ldr r0,[pc,#offset]
ldr r0,=0x12345678
ldr r0,=0x00010000
ldr rd,[rm,#offset]
ldr rd,[rm,rn]
unsigned int something;
unsigned int r0;
unsigned int r1;

r0 = &something;
r1 = *(unsigned int *)r0;
something:
    .word 0

ldr r0,=something
ldr r1,[r0]
Kivy scrollable label: impossible to read the beginning and the end of the label

Kivy scrollable label: impossible to read the beginning and the end of the label


By : Stefan Wölflinger
Date : March 29 2020, 07:55 AM
this will help I simply had to use l.bind(texture_size=l.setter('size')). That fixed the 2 issues. This is the updated def function:
code :
def build(self):
    layout_pop  = GridLayout (cols=3)
    for i in range(3):
        l = Label( 
            text="1abcdefghijklmnopqrstuvwxyz_2abcdefghijklmnopqrstuvwxyz_3abcdefghijklmnopqrstuvwxyz_4abcdefghijklmnopqrstuvwxyz_5abcdefghijklmnopqrstuvwxyz_6abcdefghijklmnopqrstuvwxyz_7abcdefghijklmnopqrstuvwxyz_8abcdefghijklmnopqrstuvwxyz \n1abcdefghijklmnopqrstuvwxyz_2abcdefghijklmnopqrstuvwxyz_3abcdefghijklmnopqrstuvwxyz_4abcdefghijklmnopqrstuvwxyz_5abcdefghijklmnopqrstuvwxyz_6abcdefghijklmnopqrstuvwxyz_7abcdefghijklmnopqrstuvwxyz_8abcdefghijklmnopqrstuvwxyz", 
            font_size=15, 
            color=(1,1,3,1), 
            size_hint_x= None)
        l.bind(texture_size=l.setter('size'))
        l.bind(size_hint_min_x=l.setter('width'))
        scroll = ScrollView(size_hint=(None, None), size=(200, 30))
        scroll.add_widget(l)
        layout_pop.add_widget(scroll)
    return layout_pop
Screenreader shall read aria-label and ignore label with for attribute

Screenreader shall read aria-label and ignore label with for attribute


By : PaschalisAv
Date : March 29 2020, 07:55 AM
will help you There are two ways to fix it.
The first hides the '/' from screen readers (using aria-hidden) then adds visually hidden text that is read by screen readers. You can do a google search on the sr-only class. It comes from bootstrap but lots of other frameworks define it too. You can copy the definition of the class from this stackoverflow answer.
code :
<div>
  <label for="input_city">City <span aria-hidden="true">/</span> <span class="sr-only">or</span> Town</label>
</div>
<div>
  <input type="text" required name="city" placeholder="Enter your city or town" id="input_city">
</div>
<div>
  <label for="input_city" aria-hidden="true">City / Town</label>
</div>
<div>
  <input type="text" required name="city" placeholder="Enter your city or town" id="input_city" aria-label="city or town">
</div>
WCAG and screen readers - Label a <section> with an <h> tag, and not have the label read twice

WCAG and screen readers - Label a <section> with an <h> tag, and not have the label read twice


By : Rajath Purli
Date : March 29 2020, 07:55 AM
This might help you I've been bringing some sites into WCAG 2.1 AA compliance. In the interest of having easy navigation, I've separated page content into relevant
tags, and also provided an tag, to allow screen readers to navigate both through landmarks and headers. I then use the as a label for the
, using aria-labelledby. Problem is, at least in Chrome with NVDA, when navigating by landmarks or headers it reads out the label twice. If I remove aria-labelledby from the
, it skips the section. , So you have something like this?
code :
<section aria-labelledby="h2id">
  <h2 id="h2id">hello</h2>
  <!-- other stuff -->
</section>
Name: "hello"
  aria-labelledby: "hello"
  aria-label: Not specified
  title: Not specified
Role: region
Labeled by: 
what does label: .word label mean in ARM Assembly

what does label: .word label mean in ARM Assembly


By : user4671674
Date : March 29 2020, 07:55 AM
With these it helps label: .word value places the 4-byte value at the address assigned (by the linker) to label.
So _irq: .word _irq effectively places _irq's address at that address (e.g. if the address of the _irq label is 0x12345678 you'd get the value 0x12345678 at address 0x12345678).
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