Debug Manual

Debug Commands
Debug Manual—421921-003
4-14
Set Trace Code Breakpoint
locations and the Q-mode syntax is not allowed. If start-address is an N mode
address, start-address refers to a 32-bit variable.
?
means list.
count
is an expression indicating the number of 16-bit words to be displayed. The value
is stored in 32 bits if a TNS/R register or N-mode start-address is used;
otherwise, it is stored in 16 bits. If count is stored in 32 bits, only the value in the
lower-order 16 bits are used to determine the number of 16-bit words to be
displayed.
If a TNS stack register R0 through R7 is specified, the value for count has to be 1
in order to display the 16-bit contents of the register. To display a range of the
stack registers, enter the starting register and count values. For example, to
display all eight stack registers, enter R0?#8.
If a TNS/R register is specified, the value for count has to be 2 in order to display
the 32-bit contents of register as two 16-bit values. To display a range of the
TNS/R registers, enter the starting register and count values. For example, to
display all 32 registers, enter $00?#64.
ALL
For more information on the description of this option, see Set Unconditional Code
Breakpoint on page 4-7.
Considerations
•
Debug displays this header each time the breakpoint location is executed:
°
TNS and accelerated modes
TRACE code-address, space-identifier
This header gives the address where the break occurred. In TNS or
accelerated mode, code-address is a C-relative address, which gives the
address of the break relative to the identified TNS code segment. An r in the
space-identifier, instead of a segment index, indicates native code; that
is, SCr, SLr, and so forth. (UC appearing without a segment index is
equivalent to UCr.)
°
RISC
TRACE $PC=code-address
In native mode, code-address is a 32-bit hexadecimal value.