Code development, Hmon, Mode support – Renesas EDK3687 User Manual

Page 14: Breakpoint support, Code located in flash / rom, Code located in ram, Hmon code size, Evelopment, Hmon 7.1.1. m, Flash / rom

7. C

ODE

EVELOPMENT

7.1. HMON

7.1.1. M

ODE

UPPORT

The HMON library is built to support Normal Mode only.

7.1.2. B

REAKPOINT

UPPORT

The monitor utilises the Address Break Controller for code located in ROM, allowing a single breakpoint to be set in the code.

Code located in RAM may have multiple breakpoints limited only by the size of the On-Chip RAM.

Due to a limitation of the internal address break controller, a breakpoint set in ROM will execute the instruction at the

breakpoint and stop on the subsequent op-code.

7.1.2.1.C

ODE LOCATED IN

FLASH / ROM

Double clicking in the breakpoint column in the code sets the breakpoint. Adding a further breakpoint in the code removes

the previous one. A warning message will be displayed in the message window when this occurs.

7.1.2.2.C

ODE LOCATED IN

RAM

Double clicking in the breakpoint column in the code sets the breakpoint. Breakpoints will remain unless they are double

clicked to remove them.

7.1.3. H

MON

ODE

IZE

HMON is built along with the debug code. Certain elements of the HMON code must remain at a fixed location in memory.

The following table details the HMON components and their size and location in memory. For more information, refer to the

map file when building code.

Section Description

Start

Location

Size
(H’bytes)

RESET_VECTOR

HMON Reset Vector (Vector 0)
Required for Startup of HMON

H’ 0000

TRAP_VECTORS

Trap Vectors (Vector 8, 9, 10, 11)
Required by HMON to create Trap Breakpoints in RAM

H’ 0010

HW_BREAK_VECTORS HMON

Break Controller (Vector 12)

Required by HMON to create Breakpoints in ROM

H’ 0018

SCI_VECTOR

HMON Serial Port Vectors (Vector 23)
Used by HMON when EDK is configured to connect to the
default serial port.

H’ 002E

PHMON

HMON Code

H’ 1000

2C3D

CHMON

HMON Constant Data

H’ 2C3E

2D10

BHMON

HMON Uninitialised data

H’ FC80

1FD

FDTInit

FDT User Mode Kernel.
This is at a fixed location and must not be moved. Should the
kernel need to be moved it must be re-compiled.

H’ 0400

FDTUserModeMicroKernel

FDT User Mode Kernel.
This is at a fixed location and must not be moved. Should the
kernel need to be moved it must be re-compiled.

H’ 0500

6CC

CUser_Vectors

Pointer used by HMON to point to the start of user code.

H’ 0C00

* CUserVectors is a long word location with the upper 16 bits set to zero.