| Line 353... |
Line 353... |
* Profiling Utility::
|
* Profiling Utility::
|
* Memory Profiling Utility::
|
* Memory Profiling Utility::
|
* Trace Generation::
|
* Trace Generation::
|
* Simulator Library::
|
* Simulator Library::
|
* Ethernet TUN/TAP Interface::
|
* Ethernet TUN/TAP Interface::
|
|
* l.nop Support::
|
@end menu
|
@end menu
|
|
|
@node Standalone Simulator
|
@node Standalone Simulator
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@section Standalone Simulator
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@section Standalone Simulator
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@cindex command line for @value{OR1KSIM} standalone use
|
@cindex command line for @value{OR1KSIM} standalone use
|
| Line 1193... |
Line 1194... |
@quotation Caution
|
@quotation Caution
|
The TAP interface should not be in use when running this command. For
|
The TAP interface should not be in use when running this command. For
|
example any OpenRISC Linux/BusyBox sessions should be closed first.
|
example any OpenRISC Linux/BusyBox sessions should be closed first.
|
@end quotation
|
@end quotation
|
|
|
|
@node l.nop Support
|
|
@section l.nop Opcode Support
|
|
@cindex l.nop opcode effects
|
|
|
|
The OpenRISC @code{l.nop} opcode can take a parameter. This has no
|
|
effect on the semantics of the opcode, but can be used to trigger side
|
|
effect behavior in a simulator. Within Or1ksim, the following parameters
|
|
are supported.
|
|
|
|
@table @code
|
|
|
|
@item l.nop 0
|
|
@cindex @code{l.nop 0}
|
|
|
|
The equivalent to @code{l.nop} with no parameter. Has no side effects.
|
|
|
|
@item l.nop 1
|
|
@cindex @code{l.nop 1} (end simulation)
|
|
|
|
Execution of Or1ksim is terminated. This is used to implement the
|
|
library @code{exit} functions.
|
|
|
|
@item l.nop 2
|
|
@cindex @code{l.nop 2} (report)
|
|
|
|
Report the value in @code{r3} on the console as a 32-bit hex value.
|
|
|
|
@item l.nop 3
|
|
@cindex @code{l.nop 3} (printf, now obsolete)
|
|
|
|
In earlier versions of @value{OR1KSIM} this treated @code{r3} as a
|
|
pointer to a @code{printf} style format string, and regsiters @code{r4}
|
|
through @code{r8} as parameters for that format string.
|
|
|
|
This opcode is no longer supported, and has no effect if used.
|
|
|
|
@item l.nop 4
|
|
@cindex @code{l.nop 4} (putc)
|
|
|
|
The value in @code{r3} is printed to standard output as an ASCII
|
|
character. All library output routines are implemented using this opcode.
|
|
|
|
@item l.nop 5
|
|
@cindex @code{l.nop 5} (reset statistics counters)
|
|
|
|
The statistics counters are reset.
|
|
|
|
@item l.nop 6
|
|
@cindex @code{l.nop 6} (get clock ticks)
|
|
|
|
The number of clock ticks since start of execution (a 64-bit value) is
|
|
returned in @code{r11} (low 32 bits) and @code{r12} (high 32 bits).
|
|
|
|
@item l.nop 7
|
|
@cindex @code{l.nop 7} (get picoseconds per cycle)
|
|
|
|
The number of picoseconds per clock cycle is returned in @code{r11}.
|
|
This is used with @code{l.nop 6} to implement timing functions.
|
|
|
|
@item l.nop 8
|
|
@cindex @code{l.nop 8} (turn on tracing)
|
|
|
|
Instruction tracing is turned on.
|
|
|
|
@item l.nop 9
|
|
@cindex @code{l.nop 9} (turn off tracing)
|
|
|
|
Instruction tracing is turned off.
|
|
|
|
@end table
|
|
|
@node Configuration
|
@node Configuration
|
@chapter Configuration
|
@chapter Configuration
|
@cindex configuring @value{OR1KSIM}
|
@cindex configuring @value{OR1KSIM}
|
|
|
@value{OR1KSIM} is configured through a configuration file. This is specified
|
@value{OR1KSIM} is configured through a configuration file. This is specified
|
