*: add FAST_FUNC to function ptrs where it makes sense

function                                             old     new   delta
evalcommand                                         1195    1209     +14
testcmd                                                -      10     +10
printfcmd                                              -      10     +10
echocmd                                                -      10     +10
func_exec                                            270     276      +6
echo_dg                                              104     109      +5
store_nlmsg                                           85      89      +4
pseudo_exec_argv                                     195     198      +3
dotcmd                                               287     290      +3
machtime_stream                                       29      31      +2
discard_stream                                        24      26      +2
argstr                                              1299    1301      +2
killcmd                                              108     109      +1
evalfor                                              226     227      +1
daytime_stream                                        43      44      +1
run_list                                            2544    2543      -1
lookupvar                                             62      61      -1
ipaddr_modify                                       1310    1309      -1
...
parse_stream                                        2254    2245      -9
evalpipe                                             356     347      -9
collect_if                                           210     197     -13
read_opt                                             869     851     -18
handle_dollar                                        681     658     -23
print_addrinfo                                      1342    1303     -39
iterate_on_dir                                       156      59     -97
print_route                                         1709    1609    -100
------------------------------------------------------------------------------
(add/remove: 3/0 grow/shrink: 12/130 up/down: 74/-767)       Total: -693 bytes
   text    data     bss     dec     hex filename
 841748     467    7872  850087   cf8a7 busybox_old
 841061     467    7872  849400   cf5f8 busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

2 files changed, 141 insertions, 140 deletions

diff --git a/shell/ash.c b/shell/ash.c
index b27b2777e..1e7429cb1 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -900,7 +900,7 @@ sharg(union node *arg, FILE *fp)
         }
 }
 
-static void
+static void FAST_FUNC
 shcmd(union node *cmd, FILE *fp)
 {
         union node *np;
@@ -1686,14 +1686,14 @@ freeparam(volatile struct shparam *param)
 }
 
 #if ENABLE_ASH_GETOPTS
-static void getoptsreset(const char *value);
+static void FAST_FUNC getoptsreset(const char *value);
 #endif
 
 struct var {
         struct var *next;               /* next entry in hash list */
         int flags;                      /* flags are defined above */
         const char *text;               /* name=value */
-        void (*func)(const char *);     /* function to be called when  */
+        void (*func)(const char *) FAST_FUNC; /* function to be called when  */
                                         /* the variable gets set/unset */
 };
 
@@ -1745,17 +1745,17 @@ change_lc_ctype(const char *value)
 #endif
 #if ENABLE_ASH_MAIL
 static void chkmail(void);
-static void changemail(const char *);
+static void changemail(const char *) FAST_FUNC;
 #endif
-static void changepath(const char *);
+static void changepath(const char *) FAST_FUNC;
 #if ENABLE_ASH_RANDOM_SUPPORT
-static void change_random(const char *);
+static void change_random(const char *) FAST_FUNC;
 #endif
 
 static const struct {
         int flags;
         const char *text;
-        void (*func)(const char *);
+        void (*func)(const char *) FAST_FUNC;
 } varinit_data[] = {
 #ifdef IFS_BROKEN
         { VSTRFIXED|VTEXTFIXED       , defifsvar   , NULL            },
@@ -1861,7 +1861,7 @@ extern struct globals_var *const ash_ptr_to_globals_var;
 #define is_in_name(c)   ((c) == '_' || isalnum((unsigned char)(c)))
 
 #if ENABLE_ASH_GETOPTS
-static void
+static void FAST_FUNC
 getoptsreset(const char *value)
 {
         shellparam.optind = number(value);
@@ -2492,7 +2492,7 @@ docd(const char *dest, int flags)
         return err;
 }
 
-static int
+static int FAST_FUNC
 cdcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
 {
         const char *dest;
@@ -2556,7 +2556,7 @@ cdcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
         return 0;
 }
 
-static int
+static int FAST_FUNC
 pwdcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
 {
         int flags;
@@ -3161,7 +3161,7 @@ printalias(const struct alias *ap)
 /*
  * TODO - sort output
  */
-static int
+static int FAST_FUNC
 aliascmd(int argc UNUSED_PARAM, char **argv)
 {
         char *n, *v;
@@ -3196,7 +3196,7 @@ aliascmd(int argc UNUSED_PARAM, char **argv)
         return ret;
 }
 
-static int
+static int FAST_FUNC
 unaliascmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
 {
         int i;
@@ -3680,7 +3680,7 @@ setjobctl(int on)
         doing_jobctl = on;
 }
 
-static int
+static int FAST_FUNC
 killcmd(int argc, char **argv)
 {
         int i = 1;
@@ -3745,7 +3745,7 @@ restartjob(struct job *jp, int mode)
         return status;
 }
 
-static int
+static int FAST_FUNC
 fg_bgcmd(int argc UNUSED_PARAM, char **argv)
 {
         struct job *jp;
@@ -4000,7 +4000,7 @@ showjobs(FILE *out, int mode)
         }
 }
 
-static int
+static int FAST_FUNC
 jobscmd(int argc UNUSED_PARAM, char **argv)
 {
         int mode, m;
@@ -4053,7 +4053,7 @@ getstatus(struct job *job)
         return retval;
 }
 
-static int
+static int FAST_FUNC
 waitcmd(int argc UNUSED_PARAM, char **argv)
 {
         struct job *job;
@@ -5587,9 +5587,9 @@ struct backcmd {                /* result of evalbackcmd */
 /* These forward decls are needed to use "eval" code for backticks handling: */
 static uint8_t back_exitstatus; /* exit status of backquoted command */
 #define EV_EXIT 01              /* exit after evaluating tree */
-static void evaltree(union node *, int);
+static void FAST_FUNC evaltree(union node *, int);
 
-static void
+static void FAST_FUNC
 evalbackcmd(union node *n, struct backcmd *result)
 {
         int saveherefd;
@@ -7018,7 +7018,7 @@ casematch(union node *pattern, char *val)
 
 struct builtincmd {
         const char *name;
-        int (*builtin)(int, char **);
+        int (*builtin)(int, char **) FAST_FUNC;
         /* unsigned flags; */
 };
 #define IS_BUILTIN_SPECIAL(b) ((b)->name[0] & 1)
@@ -7312,7 +7312,7 @@ addcmdentry(char *name, struct cmdentry *entry)
         cmdp->rehash = 0;
 }
 
-static int
+static int FAST_FUNC
 hashcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
 {
         struct tblentry **pp;
@@ -7382,7 +7382,7 @@ hashcd(void)
  * pathval() still returns the old value at this point.
  * Called with interrupts off.
  */
-static void
+static void FAST_FUNC
 changepath(const char *new)
 {
         const char *old;
@@ -7614,7 +7614,7 @@ describe_command(char *command, int describe_command_verbose)
         return 0;
 }
 
-static int
+static int FAST_FUNC
 typecmd(int argc UNUSED_PARAM, char **argv)
 {
         int i = 1;
@@ -7633,7 +7633,7 @@ typecmd(int argc UNUSED_PARAM, char **argv)
 }
 
 #if ENABLE_ASH_CMDCMD
-static int
+static int FAST_FUNC
 commandcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
 {
         int c;
@@ -8018,13 +8018,13 @@ dotrap(void)
 }
 
 /* forward declarations - evaluation is fairly recursive business... */
-static void evalloop(union node *, int);
-static void evalfor(union node *, int);
-static void evalcase(union node *, int);
-static void evalsubshell(union node *, int);
+static void FAST_FUNC evalloop(union node *, int);
+static void FAST_FUNC evalfor(union node *, int);
+static void FAST_FUNC evalcase(union node *, int);
+static void FAST_FUNC evalsubshell(union node *, int);
 static void expredir(union node *);
-static void evalpipe(union node *, int);
-static void evalcommand(union node *, int);
+static void FAST_FUNC evalpipe(union node *, int);
+static void FAST_FUNC evalcommand(union node *, int);
 static int evalbltin(const struct builtincmd *, int, char **);
 static void prehash(union node *);
 
@@ -8032,13 +8032,13 @@ static void prehash(union node *);
  * Evaluate a parse tree.  The value is left in the global variable
  * exitstatus.
  */
-static void
+static void FAST_FUNC
 evaltree(union node *n, int flags)
 {
         struct jmploc *volatile savehandler = exception_handler;
         struct jmploc jmploc;
         int checkexit = 0;
-        void (*evalfn)(union node *, int);
+        void (*evalfn)(union node *, int) FAST_FUNC;
         int status;
         int int_level;
 
@@ -8182,7 +8182,7 @@ static
 #endif
 void evaltreenr(union node *, int) __attribute__ ((alias("evaltree"),__noreturn__));
 
-static void
+static void FAST_FUNC
 evalloop(union node *n, int flags)
 {
         int status;
@@ -8218,7 +8218,7 @@ evalloop(union node *n, int flags)
         exitstatus = status;
 }
 
-static void
+static void FAST_FUNC
 evalfor(union node *n, int flags)
 {
         struct arglist arglist;
@@ -8258,7 +8258,7 @@ evalfor(union node *n, int flags)
         popstackmark(&smark);
 }
 
-static void
+static void FAST_FUNC
 evalcase(union node *n, int flags)
 {
         union node *cp;
@@ -8288,7 +8288,7 @@ evalcase(union node *n, int flags)
 /*
  * Kick off a subshell to evaluate a tree.
  */
-static void
+static void FAST_FUNC
 evalsubshell(union node *n, int flags)
 {
         struct job *jp;
@@ -8375,7 +8375,7 @@ expredir(union node *n)
  * of the shell, which make the last process in a pipeline the parent
  * of all the rest.)
  */
-static void
+static void FAST_FUNC
 evalpipe(union node *n, int flags)
 {
         struct job *jp;
@@ -8644,7 +8644,7 @@ mklocal(char *name)
 /*
  * The "local" command.
  */
-static int
+static int FAST_FUNC
 localcmd(int argc UNUSED_PARAM, char **argv)
 {
         char *name;
@@ -8656,19 +8656,19 @@ localcmd(int argc UNUSED_PARAM, char **argv)
         return 0;
 }
 
-static int
+static int FAST_FUNC
 falsecmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
 {
         return 1;
 }
 
-static int
+static int FAST_FUNC
 truecmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
 {
         return 0;
 }
 
-static int
+static int FAST_FUNC
 execcmd(int argc UNUSED_PARAM, char **argv)
 {
         if (argv[1]) {
@@ -8683,7 +8683,7 @@ execcmd(int argc UNUSED_PARAM, char **argv)
 /*
  * The return command.
  */
-static int
+static int FAST_FUNC
 returncmd(int argc UNUSED_PARAM, char **argv)
 {
         /*
@@ -8695,28 +8695,28 @@ returncmd(int argc UNUSED_PARAM, char **argv)
 }
 
 /* Forward declarations for builtintab[] */
-static int breakcmd(int, char **);
-static int dotcmd(int, char **);
-static int evalcmd(int, char **);
-static int exitcmd(int, char **);
-static int exportcmd(int, char **);
+static int breakcmd(int, char **) FAST_FUNC;
+static int dotcmd(int, char **) FAST_FUNC;
+static int evalcmd(int, char **) FAST_FUNC;
+static int exitcmd(int, char **) FAST_FUNC;
+static int exportcmd(int, char **) FAST_FUNC;
 #if ENABLE_ASH_GETOPTS
-static int getoptscmd(int, char **);
+static int getoptscmd(int, char **) FAST_FUNC;
 #endif
 #if !ENABLE_FEATURE_SH_EXTRA_QUIET
-static int helpcmd(int, char **);
+static int helpcmd(int, char **) FAST_FUNC;
 #endif
 #if ENABLE_SH_MATH_SUPPORT
-static int letcmd(int, char **);
+static int letcmd(int, char **) FAST_FUNC;
 #endif
-static int readcmd(int, char **);
-static int setcmd(int, char **);
-static int shiftcmd(int, char **);
-static int timescmd(int, char **);
-static int trapcmd(int, char **);
-static int umaskcmd(int, char **);
-static int unsetcmd(int, char **);
-static int ulimitcmd(int, char **);
+static int readcmd(int, char **) FAST_FUNC;
+static int setcmd(int, char **) FAST_FUNC;
+static int shiftcmd(int, char **) FAST_FUNC;
+static int timescmd(int, char **) FAST_FUNC;
+static int trapcmd(int, char **) FAST_FUNC;
+static int umaskcmd(int, char **) FAST_FUNC;
+static int unsetcmd(int, char **) FAST_FUNC;
+static int ulimitcmd(int, char **) FAST_FUNC;
 
 #define BUILTIN_NOSPEC          "0"
 #define BUILTIN_SPECIAL         "1"
@@ -8739,9 +8739,10 @@ static int ulimitcmd(int, char **);
  * Apart from the above, [[ expr ]] should work as [ expr ]
  */
 
-#define echocmd   echo_main
-#define printfcmd printf_main
-#define testcmd   test_main
+/* Stubs for calling non-FAST_FUNC's */
+static int FAST_FUNC echocmd(int argc, char **argv)   { return echo_main(argc, argv); }
+static int FAST_FUNC printfcmd(int argc, char **argv) { return printf_main(argc, argv); }
+static int FAST_FUNC testcmd(int argc, char **argv)   { return test_main(argc, argv); }
 
 /* Keep these in proper order since it is searched via bsearch() */
 static const struct builtincmd builtintab[] = {
@@ -8864,14 +8865,14 @@ isassignment(const char *p)
                 return 0;
         return *q == '=';
 }
-static int
+static int FAST_FUNC
 bltincmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
 {
         /* Preserve exitstatus of a previous possible redirection
          * as POSIX mandates */
         return back_exitstatus;
 }
-static void
+static void FAST_FUNC
 evalcommand(union node *cmd, int flags)
 {
         static const struct builtincmd null_bltin = {
@@ -9189,7 +9190,7 @@ prehash(union node *n)
  * be an error to break out of more loops than exist, but it isn't
  * in the standard shell so we don't make it one here.
  */
-static int
+static int FAST_FUNC
 breakcmd(int argc UNUSED_PARAM, char **argv)
 {
         int n = argv[1] ? number(argv[1]) : 1;
@@ -9734,7 +9735,7 @@ chkmail(void)
         popstackmark(&smark);
 }
 
-static void
+static void FAST_FUNC
 changemail(const char *val UNUSED_PARAM)
 {
         mail_var_path_changed = 1;
@@ -9890,7 +9891,7 @@ options(int cmdline)
 /*
  * The shift builtin command.
  */
-static int
+static int FAST_FUNC
 shiftcmd(int argc UNUSED_PARAM, char **argv)
 {
         int n;
@@ -9952,7 +9953,7 @@ showvars(const char *sep_prefix, int on, int off)
 /*
  * The set command builtin.
  */
-static int
+static int FAST_FUNC
 setcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
 {
         int retval;
@@ -9973,7 +9974,7 @@ setcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
 }
 
 #if ENABLE_ASH_RANDOM_SUPPORT
-static void
+static void FAST_FUNC
 change_random(const char *value)
 {
         /* Galois LFSR parameter */
@@ -10103,7 +10104,7 @@ getopts(char *optstr, char *optvar, char **optfirst, int *param_optind, int *opt
  * be processed in the current argument.  If shellparam.optnext is NULL,
  * then it's the first time getopts has been called.
  */
-static int
+static int FAST_FUNC
 getoptscmd(int argc, char **argv)
 {
         char **optbase;
@@ -11792,7 +11793,7 @@ evalstring(char *s, int mask)
 /*
  * The eval command.
  */
-static int
+static int FAST_FUNC
 evalcmd(int argc UNUSED_PARAM, char **argv)
 {
         char *p;
@@ -11917,7 +11918,7 @@ find_dot_file(char *name)
         /* NOTREACHED */
 }
 
-static int
+static int FAST_FUNC
 dotcmd(int argc, char **argv)
 {
         struct strlist *sp;
@@ -11952,7 +11953,7 @@ dotcmd(int argc, char **argv)
         return status;
 }
 
-static int
+static int FAST_FUNC
 exitcmd(int argc UNUSED_PARAM, char **argv)
 {
         if (stoppedjobs())
@@ -12176,7 +12177,7 @@ find_command(char *name, struct cmdentry *entry, int act, const char *path)
 /*
  * The trap builtin.
  */
-static int
+static int FAST_FUNC
 trapcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
 {
         char *action;
@@ -12226,7 +12227,7 @@ trapcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
 /*
  * Lists available builtins
  */
-static int
+static int FAST_FUNC
 helpcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
 {
         unsigned col;
@@ -12264,7 +12265,7 @@ helpcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
 /*
  * The export and readonly commands.
  */
-static int
+static int FAST_FUNC
 exportcmd(int argc UNUSED_PARAM, char **argv)
 {
         struct var *vp;
@@ -12315,7 +12316,7 @@ unsetfunc(const char *name)
  * variable to allow a function to be unset when there is a readonly variable
  * with the same name.
  */
-static int
+static int FAST_FUNC
 unsetcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
 {
         char **ap;
@@ -12353,7 +12354,7 @@ static const unsigned char timescmd_str[] ALIGN1 = {
         0
 };
 
-static int
+static int FAST_FUNC
 timescmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
 {
         long clk_tck, s, t;
@@ -12383,7 +12384,7 @@ timescmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
  *
  * Copyright (C) 2003 Vladimir Oleynik <dzo@simtreas.ru>
  */
-static int
+static int FAST_FUNC
 letcmd(int argc UNUSED_PARAM, char **argv)
 {
         arith_t i;
@@ -12425,7 +12426,7 @@ typedef enum __rlimit_resource rlim_t;
  *      -d DELIM        End on DELIM char, not newline
  *      -e              Use line editing (tty only)
  */
-static int
+static int FAST_FUNC
 readcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
 {
         static const char *const arg_REPLY[] = { "REPLY", NULL };
@@ -12635,7 +12636,7 @@ readcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
         return status;
 }
 
-static int
+static int FAST_FUNC
 umaskcmd(int argc UNUSED_PARAM, char **argv)
 {
         static const char permuser[3] ALIGN1 = "ugo";
@@ -12811,7 +12812,7 @@ printlim(enum limtype how, const struct rlimit *limit,
         }
 }
 
-static int
+static int FAST_FUNC
 ulimitcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
 {
         int c;
diff --git a/shell/hush.c b/shell/hush.c
index a6db16c35..f34fdd402 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -256,8 +256,8 @@ typedef struct in_str {
         smallint promptmode; /* 0: PS1, 1: PS2 */
 #endif
         FILE *file;
-        int (*get) (struct in_str *);
-        int (*peek) (struct in_str *);
+        int (*get) (struct in_str *) FAST_FUNC;
+        int (*peek) (struct in_str *) FAST_FUNC;
 } in_str;
 #define i_getch(input) ((input)->get(input))
 #define i_peek(input) ((input)->peek(input))
@@ -537,43 +537,43 @@ struct globals {
 
 
 /* Function prototypes for builtins */
-static int builtin_cd(char **argv);
-static int builtin_echo(char **argv);
-static int builtin_eval(char **argv);
-static int builtin_exec(char **argv);
-static int builtin_exit(char **argv);
-static int builtin_export(char **argv);
+static int builtin_cd(char **argv) FAST_FUNC;
+static int builtin_echo(char **argv) FAST_FUNC;
+static int builtin_eval(char **argv) FAST_FUNC;
+static int builtin_exec(char **argv) FAST_FUNC;
+static int builtin_exit(char **argv) FAST_FUNC;
+static int builtin_export(char **argv) FAST_FUNC;
 #if ENABLE_HUSH_JOB
-static int builtin_fg_bg(char **argv);
-static int builtin_jobs(char **argv);
+static int builtin_fg_bg(char **argv) FAST_FUNC;
+static int builtin_jobs(char **argv) FAST_FUNC;
 #endif
 #if ENABLE_HUSH_HELP
-static int builtin_help(char **argv);
+static int builtin_help(char **argv) FAST_FUNC;
 #endif
 #if ENABLE_HUSH_LOCAL
-static int builtin_local(char **argv);
+static int builtin_local(char **argv) FAST_FUNC;
 #endif
 #if HUSH_DEBUG
-static int builtin_memleak(char **argv);
-#endif
-static int builtin_pwd(char **argv);
-static int builtin_read(char **argv);
-static int builtin_set(char **argv);
-static int builtin_shift(char **argv);
-static int builtin_source(char **argv);
-static int builtin_test(char **argv);
-static int builtin_trap(char **argv);
-static int builtin_type(char **argv);
-static int builtin_true(char **argv);
-static int builtin_umask(char **argv);
-static int builtin_unset(char **argv);
-static int builtin_wait(char **argv);
+static int builtin_memleak(char **argv) FAST_FUNC;
+#endif
+static int builtin_pwd(char **argv) FAST_FUNC;
+static int builtin_read(char **argv) FAST_FUNC;
+static int builtin_set(char **argv) FAST_FUNC;
+static int builtin_shift(char **argv) FAST_FUNC;
+static int builtin_source(char **argv) FAST_FUNC;
+static int builtin_test(char **argv) FAST_FUNC;
+static int builtin_trap(char **argv) FAST_FUNC;
+static int builtin_type(char **argv) FAST_FUNC;
+static int builtin_true(char **argv) FAST_FUNC;
+static int builtin_umask(char **argv) FAST_FUNC;
+static int builtin_unset(char **argv) FAST_FUNC;
+static int builtin_wait(char **argv) FAST_FUNC;
 #if ENABLE_HUSH_LOOPS
-static int builtin_break(char **argv);
-static int builtin_continue(char **argv);
+static int builtin_break(char **argv) FAST_FUNC;
+static int builtin_continue(char **argv) FAST_FUNC;
 #endif
 #if ENABLE_HUSH_FUNCTIONS
-static int builtin_return(char **argv);
+static int builtin_return(char **argv) FAST_FUNC;
 #endif
 
 /* Table of built-in functions.  They can be forked or not, depending on
@@ -584,7 +584,7 @@ static int builtin_return(char **argv);
  * still be set at the end. */
 struct built_in_command {
         const char *cmd;
-        int (*function)(char **argv);
+        int (*function)(char **argv) FAST_FUNC;
 #if ENABLE_HUSH_HELP
         const char *descr;
 # define BLTIN(cmd, func, help) { cmd, func, help }
@@ -1541,7 +1541,7 @@ static struct variable *set_vars_and_save_old(char **strings)
 /*
  * in_str support
  */
-static int static_get(struct in_str *i)
+static int FAST_FUNC static_get(struct in_str *i)
 {
         int ch = *i->p++;
         if (ch != '\0')
@@ -1550,7 +1550,7 @@ static int static_get(struct in_str *i)
         return EOF;
 }
 
-static int static_peek(struct in_str *i)
+static int FAST_FUNC static_peek(struct in_str *i)
 {
         return *i->p;
 }
@@ -1629,7 +1629,7 @@ static void get_user_input(struct in_str *i)
 
 /* This is the magic location that prints prompts
  * and gets data back from the user */
-static int file_get(struct in_str *i)
+static int FAST_FUNC file_get(struct in_str *i)
 {
         int ch;
 
@@ -1668,7 +1668,7 @@ static int file_get(struct in_str *i)
 /* All callers guarantee this routine will never
  * be used right after a newline, so prompting is not needed.
  */
-static int file_peek(struct in_str *i)
+static int FAST_FUNC file_peek(struct in_str *i)
 {
         int ch;
         if (i->p && *i->p) {
@@ -6560,12 +6560,12 @@ int lash_main(int argc, char **argv)
 /*
  * Built-ins
  */
-static int builtin_true(char **argv UNUSED_PARAM)
+static int FAST_FUNC builtin_true(char **argv UNUSED_PARAM)
 {
         return 0;
 }
 
-static int builtin_test(char **argv)
+static int FAST_FUNC builtin_test(char **argv)
 {
         int argc = 0;
         while (*argv) {
@@ -6575,7 +6575,7 @@ static int builtin_test(char **argv)
         return test_main(argc, argv - argc);
 }
 
-static int builtin_echo(char **argv)
+static int FAST_FUNC builtin_echo(char **argv)
 {
         int argc = 0;
         while (*argv) {
@@ -6585,7 +6585,7 @@ static int builtin_echo(char **argv)
         return echo_main(argc, argv - argc);
 }
 
-static int builtin_eval(char **argv)
+static int FAST_FUNC builtin_eval(char **argv)
 {
         int rcode = EXIT_SUCCESS;
 
@@ -6602,7 +6602,7 @@ static int builtin_eval(char **argv)
         return rcode;
 }
 
-static int builtin_cd(char **argv)
+static int FAST_FUNC builtin_cd(char **argv)
 {
         const char *newdir = argv[1];
         if (newdir == NULL) {
@@ -6621,7 +6621,7 @@ static int builtin_cd(char **argv)
         return EXIT_SUCCESS;
 }
 
-static int builtin_exec(char **argv)
+static int FAST_FUNC builtin_exec(char **argv)
 {
         if (*++argv == NULL)
                 return EXIT_SUCCESS; /* bash does this */
@@ -6635,7 +6635,7 @@ static int builtin_exec(char **argv)
         }
 }
 
-static int builtin_exit(char **argv)
+static int FAST_FUNC builtin_exit(char **argv)
 {
         debug_printf_exec("%s()\n", __func__);
 
@@ -6730,7 +6730,7 @@ static void helper_export_local(char **argv, int exp, int lvl)
         } while (*++argv);
 }
 
-static int builtin_export(char **argv)
+static int FAST_FUNC builtin_export(char **argv)
 {
         unsigned opt_unexport;
 
@@ -6778,7 +6778,7 @@ static int builtin_export(char **argv)
 }
 
 #if ENABLE_HUSH_LOCAL
-static int builtin_local(char **argv)
+static int FAST_FUNC builtin_local(char **argv)
 {
         if (G.func_nest_level == 0) {
                 bb_error_msg("%s: not in a function", argv[0]);
@@ -6789,7 +6789,7 @@ static int builtin_local(char **argv)
 }
 #endif
 
-static int builtin_trap(char **argv)
+static int FAST_FUNC builtin_trap(char **argv)
 {
         int sig;
         char *new_cmd;
@@ -6879,7 +6879,7 @@ static int builtin_trap(char **argv)
 }
 
 /* http://www.opengroup.org/onlinepubs/9699919799/utilities/type.html */
-static int builtin_type(char **argv)
+static int FAST_FUNC builtin_type(char **argv)
 {
         int ret = EXIT_SUCCESS;
 
@@ -6913,7 +6913,7 @@ static int builtin_type(char **argv)
 
 #if ENABLE_HUSH_JOB
 /* built-in 'fg' and 'bg' handler */
-static int builtin_fg_bg(char **argv)
+static int FAST_FUNC builtin_fg_bg(char **argv)
 {
         int i, jobnum;
         struct pipe *pi;
@@ -6976,7 +6976,7 @@ static int builtin_fg_bg(char **argv)
 #endif
 
 #if ENABLE_HUSH_HELP
-static int builtin_help(char **argv UNUSED_PARAM)
+static int FAST_FUNC builtin_help(char **argv UNUSED_PARAM)
 {
         const struct built_in_command *x;
 
@@ -6992,7 +6992,7 @@ static int builtin_help(char **argv UNUSED_PARAM)
 #endif
 
 #if ENABLE_HUSH_JOB
-static int builtin_jobs(char **argv UNUSED_PARAM)
+static int FAST_FUNC builtin_jobs(char **argv UNUSED_PARAM)
 {
         struct pipe *job;
         const char *status_string;
@@ -7010,7 +7010,7 @@ static int builtin_jobs(char **argv UNUSED_PARAM)
 #endif
 
 #if HUSH_DEBUG
-static int builtin_memleak(char **argv UNUSED_PARAM)
+static int FAST_FUNC builtin_memleak(char **argv UNUSED_PARAM)
 {
         void *p;
         unsigned long l;
@@ -7039,13 +7039,13 @@ static int builtin_memleak(char **argv UNUSED_PARAM)
 }
 #endif
 
-static int builtin_pwd(char **argv UNUSED_PARAM)
+static int FAST_FUNC builtin_pwd(char **argv UNUSED_PARAM)
 {
         puts(set_cwd());
         return EXIT_SUCCESS;
 }
 
-static int builtin_read(char **argv)
+static int FAST_FUNC builtin_read(char **argv)
 {
         char *string;
         const char *name = "REPLY";
@@ -7088,7 +7088,7 @@ static int builtin_read(char **argv)
  *
  * So far, we only support "set -- [argument...]" and some of the short names.
  */
-static int builtin_set(char **argv)
+static int FAST_FUNC builtin_set(char **argv)
 {
         int n;
         char **pp, **g_argv;
@@ -7147,7 +7147,7 @@ static int builtin_set(char **argv)
         return EXIT_FAILURE;
 }
 
-static int builtin_shift(char **argv)
+static int FAST_FUNC builtin_shift(char **argv)
 {
         int n = 1;
         if (argv[1]) {
@@ -7167,7 +7167,7 @@ static int builtin_shift(char **argv)
         return EXIT_FAILURE;
 }
 
-static int builtin_source(char **argv)
+static int FAST_FUNC builtin_source(char **argv)
 {
         char *arg_path;
         FILE *input;
@@ -7208,7 +7208,7 @@ static int builtin_source(char **argv)
         return G.last_exitcode;
 }
 
-static int builtin_umask(char **argv)
+static int FAST_FUNC builtin_umask(char **argv)
 {
         int rc;
         mode_t mask;
@@ -7240,7 +7240,7 @@ static int builtin_umask(char **argv)
 }
 
 /* http://www.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#unset */
-static int builtin_unset(char **argv)
+static int FAST_FUNC builtin_unset(char **argv)
 {
         int ret;
         unsigned opts;
@@ -7277,7 +7277,7 @@ static int builtin_unset(char **argv)
 }
 
 /* http://www.opengroup.org/onlinepubs/9699919799/utilities/wait.html */
-static int builtin_wait(char **argv)
+static int FAST_FUNC builtin_wait(char **argv)
 {
         int ret = EXIT_SUCCESS;
         int status, sig;
@@ -7361,7 +7361,7 @@ static unsigned parse_numeric_argv1(char **argv, unsigned def, unsigned def_min)
 #endif
 
 #if ENABLE_HUSH_LOOPS
-static int builtin_break(char **argv)
+static int FAST_FUNC builtin_break(char **argv)
 {
         unsigned depth;
         if (G.depth_of_loop == 0) {
@@ -7379,7 +7379,7 @@ static int builtin_break(char **argv)
         return EXIT_SUCCESS;
 }
 
-static int builtin_continue(char **argv)
+static int FAST_FUNC builtin_continue(char **argv)
 {
         G.flag_break_continue = 1; /* BC_CONTINUE = 2 = 1+1 */
         return builtin_break(argv);
@@ -7387,7 +7387,7 @@ static int builtin_continue(char **argv)
 #endif
 
 #if ENABLE_HUSH_FUNCTIONS
-static int builtin_return(char **argv)
+static int FAST_FUNC builtin_return(char **argv)
 {
         int rc;