Implementation of the transition, dwarf

Question

Im working on a source level debugger. Debug information is available in elf format. How can one step over? The problem is in "Point1", anyway, I can wait for the next line of the source (reading from the table .debug_line).

thank

if (a == 1)
 x = 1; //Point1
else if (a == 2)
 x = 1;

z = 1;

Answer 1

I'm not sure I fully understand this question, but I can say how GDB implements the team step.

After the control has entered a specific compilation unit, GDB reads this CU debugging information; in particular, it reads the CU part of the .debug_line section and builds a table that displays the addresses of commands in the position of the source code.

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int fact(n) { if (n > 0) { return n * fact(n-1); } else return 1; }

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fact (n=10) at recurse.c:4
(gdb) step
fact (n=9) at recurse.c:4
(gdb) step
fact (n=8) at recurse.c:4

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