trace32 memory class: SD UD ED etc.

when write trace32 scripts, sometimes see following codes:

 

data.set sd: 0x11000000 %be %long 0x12345678

 

what's the sd stand for?

 

please refer:

 

in

 

Normal memory access commands can be used together with new access classes ’AHB:’ and ’APB:’ (old syntax: ’DAP:’). During runtime you need to add an

'E'->'EAHB:', 'EAPB:'.

 

Examples:

-------------------------

Data.Set APB:0x90003020 %Long 0x12345678
Data.dump AHB:0x80000000

-------------------------

 

If you want to access memory as seen by the core you can use the standard access classes like ’SD:’ for data and ’SR:’ or ’ST:’ for code memory. But the debugger can not access memory via the core when the core is running. If you want to get it accessed via AHB (MEM-AP of the DAP) only when the core is running
you need to add an ’E’ before the access class like ’ESD:’, ’ESR:’, ’EST:’

 

 

memory classes chapter.

To specify which and how target memory is accessed, there are memory classes. A memory class consists of one or more letters followed by a colon “:”. Memory classes can be applied almost everywhere an address has to be specified.

 

Here are some examples:

------------------------+-----------------------------------------------

Command                 | Effect

------------------------+-----------------------------------------------
DATA.LIST P:0x1000      | Opens a List window displaying program memory

------------------------+-----------------------------------------------
DATA.SET SPR:272. %Long | Write value 0x00223344 to SPRG0

 0x00223344             |

------------------------+----------------------------------------------

 

 

 

The following memory classes are available:

---------------+-------------------------------------

Memory Class   |   Description
---------------+-------------------------------------
P              |   Program
---------------+-------------------------------------
D              |   Data
---------------+-------------------------------------
SPR            |   Special Purpose Register
---------------+-------------------------------------
IC             |   Instruction Cache
---------------+-------------------------------------
DC             |   Data Cache
---------------+-------------------------------------
L2             |   Level 2 cache
---------------+-------------------------------------
NC             |   No Cache (only physical memory)
-----------------------------------------------------

 

 

 

In addition to the memory classes, there are memory class attributes. Examples:

------------------------+-------------------------------------------------

Command                 | Effect
------------------------+-------------------------------------------------
DATA.LIST SP:0x1000     | Opens a List window displaying supervisor program

                        | memory
------------------------+-------------------------------------------------
DATA.SET ED:0x3330 0x4F | Write 0x4F to address 0x3330 using real-time

                        | memory access
------------------------+-------------------------------------------------

 

 

The following memory class attributes are available:

------------------------+-------------------------------------------------
Memory Class Attribute  | Description
------------------------+-------------------------------------------------
E                       | Use real-time memory access (not available on all CPUs)
------------------------+-------------------------------------------------
A                       | Given address is physical (bypass MMU)
------------------------+-------------------------------------------------
U                       | User memory
------------------------+-------------------------------------------------
S                       | Supervisor memory
------------------------+-------------------------------------------------

Memory class attributes can also be used without a memory class, but U: and S: are usually combined with D: and P: (UD: user data, SD: supervisor data, UP: user program, UD: user data).