From 9a72a6e5cc23d29d510625c0c1677fb7ae465032 Mon Sep 17 00:00:00 2001
From: Silvino Silva <silvino@bk.ru>
Date: Tue, 24 Dec 2019 04:10:14 +0000
Subject: better c debugging and git tags doc

---
 dev/c/debugging.html | 27 +++++++++++++++++----------
 1 file changed, 17 insertions(+), 10 deletions(-)

(limited to 'dev/c')

diff --git a/dev/c/debugging.html b/dev/c/debugging.html
index 90dca1b..c26ae7e 100644
--- a/dev/c/debugging.html
+++ b/dev/c/debugging.html
@@ -42,7 +42,7 @@
 
         <h2 id="gdb">GDB</h2>
 
-        <p>If the program needs arguments you can set it;</p>
+        <p>If the program needs arguments you can set it at start or later;</p>
 
         <pre>
         (gdb)set args -parameter1 -parameter2
@@ -63,16 +63,24 @@
             <dd>TUI single key mode.</dd>
             <dt>Ctrl-L s</dt>
             <dd>Refresh screen.</dd>
-            <dt>Up</dt>
-            <dd>Scroll</dd>
-            <dt>Down</dt>
-            <dd>Scroll</dd>
-            <dt>Left</dt>
-            <dd>Scroll</dd>
-            <dt>Right</dt>
-            <dd>Scroll</dd>
         </dl>
 
+        <p>To attach to a process (pid 5922) and start UI with disassemble;<p>
+
+        <pre>
+        $ gdb -p 5922
+        (gdb) layout asm
+        (gdb) disassemble
+        (gdb) set disassembly-flavor intel
+        </pre>
+
+        <p>Break on memory address and inspect area of the memory;</p>
+
+        <pre>
+        (gdb) b *0x400671
+        (gdb) x/16gx 0x7ffe5217c03d
+        </pre>
+
         <pre>
         (gdb) info win
         (gdb) fs next
@@ -85,7 +93,6 @@
         info locals
         display
         print
-        x
         catch syscall open
         </pre>
 
-- 
cgit 1.4.1-2-gfad0