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ARM720: help/usage updates 

Deprecate the "pass an instruction opcode" flavor of cp15 access
in favor of the "arm mcr ..." and "arm mrc ..." commands, which
offer fewer ways to break things.

Use the same EBNF syntax in the code as for the user's guide.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
This commit is contained in:
David Brownell 2010-01-07 16:25:03 -08:00
parent 199abf49ea
commit e0b6e5deef
2 changed files with 10 additions and 4 deletions
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8
doc/openocd.texi
View File

@ -5921,9 +5921,13 @@ which are implementations of the ARMv4T architecture
based on the ARM7TDMI-S integer core.
They are available in addition to the ARM and ARM7/ARM9 commands.
@deffn Command {arm720t cp15} regnum [value]
Display cp15 register @var{regnum};
@deffn Command {arm720t cp15} opcode [value]
@emph{DEPRECATED -- avoid using this.
Use the @command{arm mrc} or @command{arm mcr} commands instead.}
Display cp15 register returned by the ARM instruction @var{opcode};
else if a @var{value} is provided, that value is written to that register.
The @var{opcode} should be the value of either an MRC or MCR instruction.
@end deffn
@subsection ARM9 specific commands

6
src/target/arm720t.c
View File

@ -516,8 +516,10 @@ static const struct command_registration arm720t_exec_command_handlers[] = {
.name = "cp15",
.handler = arm720t_handle_cp15_command,
.mode = COMMAND_EXEC,
.usage = "<opcode> [value]",
.help = "display/modify cp15 register",
/* prefer using less error-prone "arm mcr" or "arm mrc" */
.help = "display/modify cp15 register using ARM opcode"
" (DEPRECATED)",
.usage = "instruction [value]",
},
COMMAND_REGISTRATION_DONE
};