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improve density of .rodata (with net win on .text size(1)) via better struct packing

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tg
2013-08-11 14:57:11 +00:00
parent 64d828ac07
commit bb0b409a9d
4 changed files with 63 additions and 49 deletions
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23
sh_flags.h
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@@ -1,11 +1,22 @@
#if defined(SHFLAGS_DEFNS)
__RCSID("$MirOS: src/bin/mksh/sh_flags.h,v 1.15 2013/07/21 18:47:24 tg Exp $");
#define FN(sname,cname,ochar,flags) /* nothing */
__RCSID("$MirOS: src/bin/mksh/sh_flags.h,v 1.16 2013/08/11 14:57:11 tg Exp $");
#define FN(sname,cname,ochar,flags) \
static const struct { \
/* character flag (if any) */ \
char c; \
/* OF_* */ \
unsigned char optflags; \
/* long name of option */ \
char name[sizeof(sname)]; \
} shoptione_ ## cname = { \
ochar, flags, sname \
};
#elif defined(SHFLAGS_ENUMS)
#define FN(sname,cname,ochar,flags) cname,
#define F0(sname,cname,ochar,flags) cname = 0,
#elif defined(SHFLAGS_ITEMS)
#define FN(sname,cname,ochar,flags) { sname, ochar, flags },
#define FN(sname,cname,ochar,flags) \
((const char *)(&shoptione_ ## cname)) + 2,
#endif
#ifndef F0
@@ -136,17 +147,17 @@ FN("viraw", FVIRAW, 0, OF_ANY)
FN("xtrace", FXTRACE, 'x', OF_ANY)
/* -c (invocation) execute specified command */
FN(NULL, FCOMMAND, 'c', OF_CMDLINE)
FN("", FCOMMAND, 'c', OF_CMDLINE)
/*
* anonymous flags: used internally by shell only (not visible to user)
*/
/* ./. direct builtin call (divined from argv[0] multi-call binary) */
FN(NULL, FAS_BUILTIN, 0, OF_INTERNAL)
FN("", FAS_BUILTIN, 0, OF_INTERNAL)
/* ./. (internal) initial shell was interactive */
FN(NULL, FTALKING_I, 0, OF_INTERNAL)
FN("", FTALKING_I, 0, OF_INTERNAL)
#undef FN
#undef F0