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vl.c: In qemu -h output, only print options for the arch we are running as

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Only print options in the help output that are accepted by our arch.
This is less confusing for users and also for other programs that
consume the help output.

The options affected are:

 -g and -prom-env only displayed on PPC or SPARC

 -win2k-hack, -rtc-td-hack, -no-fd-bootchk, -no-acpi, -no-hpet,
 -acpitable, -smbios only displayed on i386

 -semihosting only displayed on ARM, M68K or XTENSA

 -old-param only displayed on ARM

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Michael Ellerman 2011-12-19 17:19:31 +11:00 committed by Anthony Liguori
parent 77bd1119ba
commit a3adb7ad3b
4 changed files with 26 additions and 17 deletions
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13
qemu-options-wrapper.h
View File

@ -4,18 +4,26 @@
#define DEF(option, opt_arg, opt_enum, opt_help, arch_mask) \
opt_enum,
#define DEFHEADING(text)
#define ARCHHEADING(text, arch_mask)
#elif defined(QEMU_OPTIONS_GENERATE_HELP)
#define DEF(option, opt_arg, opt_enum, opt_help, arch_mask) \
opt_help
#define DEFHEADING(text) stringify(text) "\n"
if ((arch_mask) & arch_type) \
fputs(opt_help, stdout);
#define ARCHHEADING(text, arch_mask) \
if ((arch_mask) & arch_type) \
puts(stringify(text));
#define DEFHEADING(text) ARCHHEADING(text, QEMU_ARCH_ALL)
#elif defined(QEMU_OPTIONS_GENERATE_OPTIONS)
#define DEF(option, opt_arg, opt_enum, opt_help, arch_mask) \
{ option, opt_arg, opt_enum, arch_mask },
#define DEFHEADING(text)
#define ARCHHEADING(text, arch_mask)
#else
#error "qemu-options-wrapper.h included with no option defined"
@ -25,6 +33,7 @@
#undef DEF
#undef DEFHEADING
#undef ARCHHEADING
#undef GEN_DOCS
#undef QEMU_OPTIONS_GENERATE_ENUM

4
qemu-options.hx
View File

@ -1070,9 +1070,9 @@ STEXI
@end table
ETEXI
DEFHEADING()
ARCHHEADING(, QEMU_ARCH_I386)
DEFHEADING(i386 target only:)
ARCHHEADING(i386 target only:, QEMU_ARCH_I386)
STEXI
@table @option
ETEXI

3
scripts/hxtool
View File

@ -47,6 +47,9 @@ hxtotexi()
DEFHEADING*)
echo "$(expr "$str" : "DEFHEADING(\(.*\))")"
;;
ARCHHEADING*)
echo "$(expr "$str" : "ARCHHEADING(\(.*\),.*)")"
;;
*)
test $flag -eq 1 && echo "$str"
;;

21
vl.c
View File

@ -1492,24 +1492,21 @@ static void version(void)
static void help(int exitcode)
{
const char *options_help =
version();
printf("usage: %s [options] [disk_image]\n\n"
"'disk_image' is a raw hard disk image for IDE hard disk 0\n\n",
error_get_progname());
#define QEMU_OPTIONS_GENERATE_HELP
#include "qemu-options-wrapper.h"
;
version();
printf("usage: %s [options] [disk_image]\n"
"\n"
"'disk_image' is a raw hard disk image for IDE hard disk 0\n"
"\n"
"%s\n"
"During emulation, the following keys are useful:\n"
printf("\nDuring emulation, the following keys are useful:\n"
"ctrl-alt-f toggle full screen\n"
"ctrl-alt-n switch to virtual console 'n'\n"
"ctrl-alt toggle mouse and keyboard grab\n"
"\n"
"When using -nographic, press 'ctrl-a h' to get some help.\n",
error_get_progname(),
options_help);
"When using -nographic, press 'ctrl-a h' to get some help.\n");
exit(exitcode);
}