Epson S5U1C17001C, Руководство пользователя

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S5U1C17001C ManUal
EPSOn
10-97
(C COMPilEr PaCkagE fOr S1C17 faMily) (Ver. 1.5.0)
10 DEBUggEr
10
Debugger
hbreak
(set hardware PC break)
thbreak
(set temporary hardware PC break) [ICD Mini / SIM]
Operation
Sets a hardware PC breakpoint. The maximum number of hardware PC breakpoints that can be set is 1 to 4 for
the ICD mode, depending on the model, and only 1 for the SIM mode.
When the PC matches the address set during program execution, the program breaks before executing the
instruction at that address. A breakpoint can be set using a function name, line number, or address.
The
hbreak
and
thbreak
commands are functionally the same. The following describes the difference:
hbreak
: The breakpoints set by
hbreak
are not cleared by a break that occurs when the set point is reached
during program execution.
thbreak
: The breakpoints set by
thbreak
are cleared by one occurrence of a break at the set point.
When the connection from the debugger is established, the number of the hardware PC breakpoints is
determined by whether 1 write and 1 read are permitted for each IBEx bit. You cannot write 1 for an
unimplemented break number (1: write, 0: read).
0xffffa0
D0 DM
D1 SE
D2 IBE0
D3 IBE1
D4 DR
D5 IBE2
<-Add
D6 IBE3
<-Add
D7 IBE4
<-Add
0xffffb0 IBAR0
0xffffb4 IBAR1
0xffffb8 IBAR2
<-Add
0xffffbc IBAR3
<-Add
0xffffd0 IBAR4
<-Add
Format
hbreak
[
Breakpoint
]
thbreak
[
Breakpoint
]
Breakpoint : Breakpoint
A breakpoint can be specified with one of the following:
• Function name
• Source file name:line number or line number only
• *Address (decimal, hexadecimal, or symbol)
When omitted, a breakpoint is set at the address displayed on the current PC.
Conditions: 0
≤
address
≤
0xfffffe
Usage example
n
Example 1
(gdb) hbreak main
Hardware assisted breakpoint 1 at 0xc0001e: file main.c, line 10.
(gdb) continue
Continuing.
Breakpoint 1, main () at main.c:10
A hardware PC breakpoint is set at the position specified using a function name.
When the target program is run, it breaks before executing the first C instruction (expanded to mnemonic) in
main()
. The PC on which the program has stopped displays the start address of that instruction (i.e., address
of first mnemonic expanded).