M5251C3 Evaluation Board Users Guide, Rev. 0
Freescale Semiconductor
2-19
client: 192.0.0.2
gateway: 0.0.0.0
netmask: 255.255.255.0
filename: test.srec
filetype: S-Record
mac: 00:CF:52:49:C3:01
2.4.26
STEP (Step Over)
Usage: STEP
The STEP command can be used to “step over” a subroutine call, rather than tracing every instruction in
the subroutine. The ST command sets a temporary breakpoint one instruction beyond the current program
counter and then executes the target code.
The STEP command can be used to “step over” BSR and JSR instructions.
The STEP command will work for other instructions as well, but note that if the STEP command is used
with an instruction that will not return, i.e. BRA, then the temporary breakpoint may never be encountered
and dBUG may never regain control.
Examples:
To pass over a subroutine call, the command is:
step
2.4.27
SYMBOL (Symbol Name Management)
Usage: SYMBOL <symb> <-a symb value> <-r symb> <-c|l|s>
The SYMBOL command adds or removes symbol names from the symbol table. If only a symbol name is
provided to the SYMBOL command, then the symbol table is searched for a match on the symbol name
and its information displayed.
The -a option adds a symbol name and its value into the symbol table. The -r option removes a symbol
name from the table.
The -c option clears the entire symbol table, the -l option lists the contents of the symbol table, and the -s
option displays usage information for the symbol table.
Symbol names contained in the symbol table are truncated to 31 characters. Any symbol table lookups,
either by the SYMBOL command or by the disassembler, will only use the first 31 characters. Symbol
names are case-sensitive.
Symbols can also be added to the symbol table via in-line assembly labels and ethernet downloads of ELF
formatted files.
Examples:
To define the symbol “main” to have the value 0x00040000, the command is:
symbol -a main 40000
Summary of Contents for freescale M5251C3
Page 1: ...Document Number M5251C3UG Rev 0 05 2006 M5251C3 Evaluation Board Users Guide ...
Page 6: ...M5251C3 Evaluation Board Users Guide Rev 0 vi Freescale Semiconductor ...
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