From: Denis Vlasenko Date: Wed, 27 Feb 2008 18:41:59 +0000 (-0000) Subject: *: add optimization barrier to all "G trick" locations X-Git-Tag: 1_10_0~85 X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=574f2f43948bb21d6e4187936ba5a5afccba25f6;p=oweals%2Fbusybox.git *: add optimization barrier to all "G trick" locations --- diff --git a/archival/gzip.c b/archival/gzip.c index 00299b17c..36502faf7 100644 --- a/archival/gzip.c +++ b/archival/gzip.c @@ -2042,8 +2042,8 @@ int gzip_main(int argc, char **argv) //if (opt & 0x4) // -v argv += optind; - PTR_TO_GLOBALS = xzalloc(sizeof(struct globals) + sizeof(struct globals2)) - + sizeof(struct globals); + SET_PTR_TO_GLOBALS(xzalloc(sizeof(struct globals) + sizeof(struct globals2)) + + sizeof(struct globals)); G2.l_desc.dyn_tree = G2.dyn_ltree; G2.l_desc.static_tree = G2.static_ltree; G2.l_desc.extra_bits = extra_lbits; diff --git a/coreutils/test.c b/coreutils/test.c index 22dadac0e..2f5b6b8a1 100644 --- a/coreutils/test.c +++ b/coreutils/test.c @@ -180,6 +180,7 @@ static struct statics *const ptr_to_statics __attribute__ ((section (".data"))); #define INIT_S() do { \ (*(struct statics**)&ptr_to_statics) = xzalloc(sizeof(S)); \ + barrier(); \ } while (0) #define DEINIT_S() do { \ free(ptr_to_statics); \ diff --git a/docs/keep_data_small.txt b/docs/keep_data_small.txt index 3ddbd81a4..2ddbefa10 100644 --- a/docs/keep_data_small.txt +++ b/docs/keep_data_small.txt @@ -99,9 +99,9 @@ and then declare that ptr_to_globals is a pointer to it: ptr_to_globals is declared as constant pointer. This helps gcc understand that it won't change, resulting in noticeably -smaller code. In order to assign it, use PTR_TO_GLOBALS macro: +smaller code. In order to assign it, use SET_PTR_TO_GLOBALS macro: - PTR_TO_GLOBALS = xzalloc(sizeof(G)); + SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); Typically it is done in _main(). diff --git a/editors/awk.c b/editors/awk.c index 983b31116..f04ea5ced 100644 --- a/editors/awk.c +++ b/editors/awk.c @@ -394,7 +394,8 @@ static const uint16_t PRIMES[] ALIGN2 = { 251, 1021, 4093, 16381, 65521 }; /* Globals. Split in two parts so that first one is addressed * with (mostly short) negative offsets */ struct globals { - chain beginseq, mainseq, endseq, *seq; + chain beginseq, mainseq, endseq; + chain *seq; node *break_ptr, *continue_ptr; rstream *iF; xhash *vhash, *ahash, *fdhash, *fnhash; @@ -445,7 +446,7 @@ struct globals2 { tsplitter fsplitter, rsplitter; }; #define G1 (ptr_to_globals[-1]) -#define G (*(struct globals2 *const)ptr_to_globals) +#define G (*(struct globals2 *)ptr_to_globals) /* For debug. nm --size-sort awk.o | grep -vi ' [tr] ' */ /* char G1size[sizeof(G1)]; - 0x6c */ /* char Gsize[sizeof(G)]; - 0x1cc */ @@ -485,7 +486,7 @@ struct globals2 { #define fsplitter (G.fsplitter ) #define rsplitter (G.rsplitter ) #define INIT_G() do { \ - PTR_TO_GLOBALS = xzalloc(sizeof(G1) + sizeof(G)) + sizeof(G1); \ + SET_PTR_TO_GLOBALS(xzalloc(sizeof(G1) + sizeof(G)) + sizeof(G1)); \ G.next_token__ltclass = TC_OPTERM; \ G.evaluate__seed = 1; \ } while (0) diff --git a/editors/diff.c b/editors/diff.c index 64b7daa11..8844ec1c0 100644 --- a/editors/diff.c +++ b/editors/diff.c @@ -151,7 +151,7 @@ struct globals { #define stb1 (G.stb1 ) #define stb2 (G.stb2 ) #define INIT_G() do { \ - PTR_TO_GLOBALS = xzalloc(sizeof(G)); \ + SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ context = 3; \ max_context = 64; \ } while (0) diff --git a/editors/ed.c b/editors/ed.c index a569788ad..15f0147be 100644 --- a/editors/ed.c +++ b/editors/ed.c @@ -51,7 +51,7 @@ struct globals { #define lines (G.lines ) #define marks (G.marks ) #define INIT_G() do { \ - PTR_TO_GLOBALS = xzalloc(sizeof(G)); \ + SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ } while (0) diff --git a/editors/vi.c b/editors/vi.c index 6f4bd06f2..d2d267036 100644 --- a/editors/vi.c +++ b/editors/vi.c @@ -233,7 +233,7 @@ struct globals { #define readbuffer (G.readbuffer ) #define scr_out_buf (G.scr_out_buf ) #define INIT_G() do { \ - PTR_TO_GLOBALS = xzalloc(sizeof(G)); \ + SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ } while (0) static int init_text_buffer(char *); // init from file or create new diff --git a/include/libbb.h b/include/libbb.h index 707e8d69b..8305e59fc 100644 --- a/include/libbb.h +++ b/include/libbb.h @@ -1208,10 +1208,14 @@ extern char bb_common_bufsiz1[COMMON_BUFSIZE]; struct globals; /* '*const' ptr makes gcc optimize code much better. * Magic prevents ptr_to_globals from going into rodata. - * If you want to assign a value, use PTR_TO_GLOBALS = xxx */ + * If you want to assign a value, use SET_PTR_TO_GLOBALS(x) */ extern struct globals *const ptr_to_globals; -#define PTR_TO_GLOBALS (*(struct globals**)&ptr_to_globals) - +/* At least gcc 3.4.6 on mipsel system needs optimization barrier */ +#define barrier() asm volatile("":::"memory") +#define SET_PTR_TO_GLOBALS(x) do { \ + (*(struct globals**)&ptr_to_globals) = (x); \ + barrier(); \ +} while (0) /* You can change LIBBB_DEFAULT_LOGIN_SHELL, but don't use it, * use bb_default_login_shell and following defines. diff --git a/libbb/Kbuild b/libbb/Kbuild index fc87f625b..fd366559a 100644 --- a/libbb/Kbuild +++ b/libbb/Kbuild @@ -69,6 +69,7 @@ lib-y += pidfile.o lib-y += printable.o lib-y += process_escape_sequence.o lib-y += procps.o +lib-y += ptr_to_globals.o lib-y += read.o lib-y += recursive_action.o lib-y += remove_file.o diff --git a/libbb/appletlib.c b/libbb/appletlib.c index 793e3dc96..fec99c5ce 100644 --- a/libbb/appletlib.c +++ b/libbb/appletlib.c @@ -127,6 +127,7 @@ void lbb_prepare(const char *applet, char **argv) { #ifdef __GLIBC__ (*(int **)&bb_errno) = __errno_location(); + barrier(); #endif applet_name = applet; diff --git a/libbb/lineedit.c b/libbb/lineedit.c index c6aa45c93..d716169d4 100644 --- a/libbb/lineedit.c +++ b/libbb/lineedit.c @@ -146,6 +146,7 @@ static struct statics *const ptr_to_statics __attribute__ ((section (".data"))); #define INIT_S() do { \ (*(struct statics**)&ptr_to_statics) = xzalloc(sizeof(S)); \ + barrier(); \ cmdedit_termw = 80; \ USE_FEATURE_EDITING_FANCY_PROMPT(num_ok_lines = 1;) \ USE_FEATURE_GETUSERNAME_AND_HOMEDIR(home_pwd_buf = (char*)null_str;) \ diff --git a/libbb/messages.c b/libbb/messages.c index 2a011f815..74a070c49 100644 --- a/libbb/messages.c +++ b/libbb/messages.c @@ -71,7 +71,3 @@ const char bb_path_wtmp_file[] ALIGN1 = * Since gcc insists on aligning struct global's members, it would be a pity * (and an alignment fault on some CPUs) to mess it up. */ char bb_common_bufsiz1[COMMON_BUFSIZE] __attribute__(( aligned(sizeof(long long)) )); - -struct globals; -/* Make it reside in R/W memory: */ -struct globals *const ptr_to_globals __attribute__ ((section (".data"))); diff --git a/libbb/ptr_to_globals.c b/libbb/ptr_to_globals.c new file mode 100644 index 000000000..f8ccbf142 --- /dev/null +++ b/libbb/ptr_to_globals.c @@ -0,0 +1,11 @@ +/* vi: set sw=4 ts=4: */ +/* + * Copyright (C) 2008 by Denys Vlasenko + * + * Licensed under GPLv2, see file LICENSE in this tarball for details. + */ + +/* We cheat here. It is declared as const ptr in libbb.h, + * but here we make it live in R/W memory */ +struct globals; +struct globals *ptr_to_globals; diff --git a/miscutils/less.c b/miscutils/less.c index da595f428..8d4f7ecd4 100644 --- a/miscutils/less.c +++ b/miscutils/less.c @@ -153,14 +153,14 @@ struct globals { #define term_orig (G.term_orig ) #define term_less (G.term_less ) #define INIT_G() do { \ - PTR_TO_GLOBALS = xzalloc(sizeof(G)); \ - less_gets_pos = -1; \ - empty_line_marker = "~"; \ - num_files = 1; \ - current_file = 1; \ - eof_error = 1; \ - terminated = 1; \ - } while (0) + SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ + less_gets_pos = -1; \ + empty_line_marker = "~"; \ + num_files = 1; \ + current_file = 1; \ + eof_error = 1; \ + terminated = 1; \ +} while (0) /* Reset terminal input to normal */ static void set_tty_cooked(void) diff --git a/networking/httpd.c b/networking/httpd.c index 5be53179f..de84ccaa2 100644 --- a/networking/httpd.c +++ b/networking/httpd.c @@ -322,7 +322,7 @@ struct globals { #define http_error_page (G.http_error_page ) #define proxy (G.proxy ) #define INIT_G() do { \ - PTR_TO_GLOBALS = xzalloc(sizeof(G)); \ + SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ USE_FEATURE_HTTPD_BASIC_AUTH(g_realm = "Web Server Authentication";) \ bind_addr_or_port = "80"; \ file_size = -1; \ diff --git a/networking/ifenslave.c b/networking/ifenslave.c index 774d7c2d2..76aaa7614 100644 --- a/networking/ifenslave.c +++ b/networking/ifenslave.c @@ -129,7 +129,7 @@ struct globals { #define master (G.master ) #define slave (G.slave ) #define INIT_G() do { \ - PTR_TO_GLOBALS = xzalloc(sizeof(G)); \ + SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ } while (0) diff --git a/networking/nc_bloaty.c b/networking/nc_bloaty.c index dd62e5df7..cd014781b 100644 --- a/networking/nc_bloaty.c +++ b/networking/nc_bloaty.c @@ -97,7 +97,6 @@ struct globals { }; #define G (*ptr_to_globals) - #define wrote_out (G.wrote_out ) #define wrote_net (G.wrote_net ) #define ouraddr (G.ouraddr ) @@ -115,6 +114,10 @@ struct globals { #else #define o_interval 0 #endif +#define INIT_G() do { \ + SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ +} while (0) + /* Must match getopt32 call! */ enum { @@ -678,9 +681,7 @@ int nc_main(int argc, char **argv) int x; unsigned o_lport = 0; - /* I was in this barbershop quartet in Skokie IL ... */ - /* round up the usual suspects, i.e. malloc up all the stuff we need */ - PTR_TO_GLOBALS = xzalloc(sizeof(G)); + INIT_G(); /* catch a signal or two for cleanup */ bb_signals(0 diff --git a/networking/sendmail.c b/networking/sendmail.c index 3a6078f79..eb356dcf5 100644 --- a/networking/sendmail.c +++ b/networking/sendmail.c @@ -77,7 +77,7 @@ struct globals { #define xargs (G.xargs ) #define fargs (G.fargs ) #define INIT_G() do { \ - PTR_TO_GLOBALS = xzalloc(sizeof(G)); \ + SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ xargs[0] = "openssl"; \ xargs[1] = "s_client"; \ xargs[2] = "-quiet"; \ diff --git a/networking/traceroute.c b/networking/traceroute.c index 2ba558fc2..582840af6 100644 --- a/networking/traceroute.c +++ b/networking/traceroute.c @@ -378,7 +378,7 @@ struct globals { #define wherefrom (G.wherefrom) #define gwlist (G.gwlist ) #define INIT_G() do { \ - PTR_TO_GLOBALS = xzalloc(sizeof(G)); \ + SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ maxpacket = 32 * 1024; \ port = 32768 + 666; \ waittime = 5; \ diff --git a/procps/nmeter.c b/procps/nmeter.c index b8ba3facb..573052921 100644 --- a/procps/nmeter.c +++ b/procps/nmeter.c @@ -75,11 +75,11 @@ struct globals { #define proc_diskstats (G.proc_diskstats ) #define proc_sys_fs_filenr (G.proc_sys_fs_filenr) #define INIT_G() do { \ - PTR_TO_GLOBALS = xzalloc(sizeof(G)); \ - cur_outbuf = outbuf; \ - final_str = "\n"; \ - deltanz = delta = 1000000; \ - } while (0) + SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ + cur_outbuf = outbuf; \ + final_str = "\n"; \ + deltanz = delta = 1000000; \ +} while (0) // We depend on this being a char[], not char* - we take sizeof() of it #define outbuf bb_common_bufsiz1 diff --git a/runit/svlogd.c b/runit/svlogd.c index 73570dad0..d7da18093 100644 --- a/runit/svlogd.c +++ b/runit/svlogd.c @@ -106,7 +106,7 @@ struct globals { #define fl_flag_0 (G.fl_flag_0 ) #define dirn (G.dirn ) #define INIT_G() do { \ - PTR_TO_GLOBALS = xzalloc(sizeof(G)); \ + SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ linemax = 1000; \ /*buflen = 1024;*/ \ linecomplete = 1; \ diff --git a/shell/Kbuild b/shell/Kbuild index 36a8ffd3a..deedc24f3 100644 --- a/shell/Kbuild +++ b/shell/Kbuild @@ -5,8 +5,7 @@ # Licensed under the GPL v2, see the file LICENSE in this tarball. lib-y:= -lib-$(CONFIG_ASH) += ash.o -lib-$(CONFIG_HUSH) += hush.o -lib-$(CONFIG_MSH) += msh.o - +lib-$(CONFIG_ASH) += ash.o ash_ptr_hack.o +lib-$(CONFIG_HUSH) += hush.o +lib-$(CONFIG_MSH) += msh.o lib-$(CONFIG_CTTYHACK) += cttyhack.o diff --git a/shell/ash.c b/shell/ash.c index 9c762e2ed..9b1a73024 100644 --- a/shell/ash.c +++ b/shell/ash.c @@ -202,9 +202,8 @@ struct globals_misc { /* indicates specified signal received */ char gotsig[NSIG - 1]; }; -/* Make it reside in writable memory, yet make compiler understand that it is not going to change. */ -static struct globals_misc *const ptr_to_globals_misc __attribute__ ((section (".data"))); -#define G_misc (*ptr_to_globals_misc) +extern struct globals_misc *const ash_ptr_to_globals_misc; +#define G_misc (*ash_ptr_to_globals_misc) #define rootpid (G_misc.rootpid ) #define shlvl (G_misc.shlvl ) #define minusc (G_misc.minusc ) @@ -223,7 +222,8 @@ static struct globals_misc *const ptr_to_globals_misc __attribute__ ((section (" #define sigmode (G_misc.sigmode ) #define gotsig (G_misc.gotsig ) #define INIT_G_misc() do { \ - (*(struct globals_misc**)&ptr_to_globals_misc) = xzalloc(sizeof(G_misc)); \ + (*(struct globals_misc**)&ash_ptr_to_globals_misc) = xzalloc(sizeof(G_misc)); \ + barrier(); \ curdir = nullstr; \ physdir = nullstr; \ } while (0) @@ -1147,9 +1147,8 @@ struct globals_memstack { int herefd; // = -1; struct stack_block stackbase; }; -/* Make it reside in writable memory, yet make compiler understand that it is not going to change. */ -static struct globals_memstack *const ptr_to_globals_memstack __attribute__ ((section (".data"))); -#define G_memstack (*ptr_to_globals_memstack) +extern struct globals_memstack *const ash_ptr_to_globals_memstack; +#define G_memstack (*ash_ptr_to_globals_memstack) #define g_stackp (G_memstack.g_stackp ) #define markp (G_memstack.markp ) #define g_stacknxt (G_memstack.g_stacknxt ) @@ -1158,7 +1157,8 @@ static struct globals_memstack *const ptr_to_globals_memstack __attribute__ ((se #define herefd (G_memstack.herefd ) #define stackbase (G_memstack.stackbase ) #define INIT_G_memstack() do { \ - (*(struct globals_memstack**)&ptr_to_globals_memstack) = xzalloc(sizeof(G_memstack)); \ + (*(struct globals_memstack**)&ash_ptr_to_globals_memstack) = xzalloc(sizeof(G_memstack)); \ + barrier(); \ g_stackp = &stackbase; \ g_stacknxt = stackbase.space; \ g_stacknleft = MINSIZE; \ @@ -1778,9 +1778,8 @@ struct globals_var { struct var *vartab[VTABSIZE]; struct var varinit[ARRAY_SIZE(varinit_data)]; }; -/* Make it reside in writable memory, yet make compiler understand that it is not going to change. */ -static struct globals_var *const ptr_to_globals_var __attribute__ ((section (".data"))); -#define G_var (*ptr_to_globals_var) +extern struct globals_var *const ash_ptr_to_globals_var; +#define G_var (*ash_ptr_to_globals_var) #define shellparam (G_var.shellparam ) #define redirlist (G_var.redirlist ) #define g_nullredirs (G_var.g_nullredirs ) @@ -1789,7 +1788,8 @@ static struct globals_var *const ptr_to_globals_var __attribute__ ((section (".d #define varinit (G_var.varinit ) #define INIT_G_var() do { \ int i; \ - (*(struct globals_var**)&ptr_to_globals_var) = xzalloc(sizeof(G_var)); \ + (*(struct globals_var**)&ash_ptr_to_globals_var) = xzalloc(sizeof(G_var)); \ + barrier(); \ for (i = 0; i < ARRAY_SIZE(varinit_data); i++) { \ varinit[i].flags = varinit_data[i].flags; \ varinit[i].text = varinit_data[i].text; \ diff --git a/shell/ash_ptr_hack.c b/shell/ash_ptr_hack.c new file mode 100644 index 000000000..490b73b6d --- /dev/null +++ b/shell/ash_ptr_hack.c @@ -0,0 +1,16 @@ +/* vi: set sw=4 ts=4: */ +/* + * Copyright (C) 2008 by Denys Vlasenko + * + * Licensed under GPLv2, see file LICENSE in this tarball for details. + */ + +/* We cheat here. They are declared as const ptr in ash.c, + * but here we make them live in R/W memory */ +struct globals_misc; +struct globals_memstack; +struct globals_var; + +struct globals_misc *ash_ptr_to_globals_misc; +struct globals_memstack *ash_ptr_to_globals_memstack; +struct globals_var *ash_ptr_to_globals_var; diff --git a/shell/hush.c b/shell/hush.c index d9ef2390e..b44f35bdd 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -460,6 +460,9 @@ enum { run_list_level = 0 }; #endif #define charmap (G.charmap ) #define user_input_buf (G.user_input_buf ) +#define INIT_G() do { \ + SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ +} while (0) #define B_CHUNK 100 @@ -3778,7 +3781,7 @@ int hush_main(int argc, char **argv) char **e; struct variable *cur_var; - PTR_TO_GLOBALS = xzalloc(sizeof(G)); + INIT_G(); /* Deal with HUSH_VERSION */ shell_ver = const_shell_ver; /* copying struct here */ diff --git a/shell/msh.c b/shell/msh.c index 917b08a1e..569011bbd 100644 --- a/shell/msh.c +++ b/shell/msh.c @@ -705,7 +705,7 @@ struct globals { #define child_cmd (G.child_cmd ) #define iostack (G.iostack ) #define INIT_G() do { \ - PTR_TO_GLOBALS = xzalloc(sizeof(G)); \ + SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ global_env.linep = line; \ global_env.iobase = iostack; \ global_env.iop = iostack - 1; \ diff --git a/sysklogd/syslogd.c b/sysklogd/syslogd.c index e54ade7fd..596984e3f 100644 --- a/sysklogd/syslogd.c +++ b/sysklogd/syslogd.c @@ -136,7 +136,7 @@ static const struct init_globals init_data = { #define G (*ptr_to_globals) #define INIT_G() do { \ - PTR_TO_GLOBALS = memcpy(xzalloc(sizeof(G)), &init_data, sizeof(init_data)); \ + SET_PTR_TO_GLOBALS(memcpy(xzalloc(sizeof(G)), &init_data, sizeof(init_data))); \ } while (0) diff --git a/util-linux/fdisk.c b/util-linux/fdisk.c index c98a74fc0..827ea21f3 100644 --- a/util-linux/fdisk.c +++ b/util-linux/fdisk.c @@ -309,7 +309,7 @@ struct globals { #define MBRbuffer (G.MBRbuffer) #define ptes (G.ptes) #define INIT_G() do { \ - PTR_TO_GLOBALS = xzalloc(sizeof(G)); \ + SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ sector_size = DEFAULT_SECTOR_SIZE; \ sector_offset = 1; \ g_partitions = 4; \ diff --git a/util-linux/fsck_minix.c b/util-linux/fsck_minix.c index deb82f75b..62e4f08b6 100644 --- a/util-linux/fsck_minix.c +++ b/util-linux/fsck_minix.c @@ -190,7 +190,7 @@ struct globals { #define check_file_blk (G.check_file_blk ) #define current_name (G.current_name ) #define INIT_G() do { \ - PTR_TO_GLOBALS = xzalloc(sizeof(G)); \ + SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ dirsize = 16; \ namelen = 14; \ current_name[0] = '/'; \ diff --git a/util-linux/mkfs_minix.c b/util-linux/mkfs_minix.c index 118b95efb..a784b72f4 100644 --- a/util-linux/mkfs_minix.c +++ b/util-linux/mkfs_minix.c @@ -122,7 +122,7 @@ struct globals { }; #define G (*ptr_to_globals) #define INIT_G() do { \ - PTR_TO_GLOBALS = xzalloc(sizeof(G)); \ + SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ } while (0) static ALWAYS_INLINE unsigned div_roundup(unsigned size, unsigned n) diff --git a/util-linux/more.c b/util-linux/more.c index eeeea509e..2d5535991 100644 --- a/util-linux/more.c +++ b/util-linux/more.c @@ -28,9 +28,7 @@ struct globals { struct termios new_settings; }; #define G (*(struct globals*)bb_common_bufsiz1) -//#define G (*ptr_to_globals) #define INIT_G() ((void)0) -//#define INIT_G() PTR_TO_GLOBALS = xzalloc(sizeof(G)) #define initial_settings (G.initial_settings) #define new_settings (G.new_settings ) #define cin_fileno (G.cin_fileno ) diff --git a/util-linux/script.c b/util-linux/script.c index fda726ed9..e6dbb1aa2 100644 --- a/util-linux/script.c +++ b/util-linux/script.c @@ -25,7 +25,7 @@ struct globals { #define tt (G.tt ) #define fname (G.fname ) #define INIT_G() do { \ - PTR_TO_GLOBALS = xzalloc(sizeof(G)); \ + SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ fname = "typescript"; \ } while (0)