Page Redirection - GNU Project
This page has been incorporated into another. If you are not redirected automatically, click here. For questions related to the use of GCC, please consult these web pages and the GCC manuals. If that fails, the [email protected] mailing list might help. Comments on these web pages and the development of GCC are welcome on our developer list at [email protected]. All of our lists have public archi
Airs - Ian Lance Taylor � How Does the Gcc Organization Work?
How does the gcc compiler get written? Who works on it and why? It seems to puzzle some people. There are vast numbers of free software projects these days, far more than I try to keep track of. Among these, gcc is unusual in several respects. gcc is more than 20 years old as an active free software project. gcc has a large number of active contributors. gcc is not associated with any single compa
GCC ã¨ãƒ¡ã‚¿ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚° - 兼雑記
GCC ã‚„ã£ã±ã™ã”ã„ãªãã¨ã„ã†è©± ã¾ãコード生æˆã™ã‚‹é¡žã®ã‚‚ã®ã¯å…¨éƒ¨ãƒ¡ã‚¿ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã ã¨è€ƒãˆã‚‹ã¨ã—ã¾ã™ã€‚当時ã®kinaba先生世界観。例ã¨ã—ã¦ã¯ C ã®ã‚³ãƒ¼ãƒ‰ã‚’ cpp 㧠C ã«ã™ã‚‹ã¨ã‹ã€ C ã®ã‚³ãƒ¼ãƒ‰ã‚’ gcc 㧠asm ã«ã™ã‚‹ã¨ã‹ autotools ã§ã»ã’ã»ã’ã¨ã‹ã€‚ ãã‚Œã¯ã¨ã‚‚ã‹ã最近æ€ã„ã¤ã„ãŸ(全然コードをèªã¾ãªã„)コードリーディング技法ã¨ã—㦠make ã—ã¦ã¿ã¦ãã®æ¨™æº–出力をゆã£ãり眺ã‚ã‚‹ã¨ã„ã†ã‚‚ã®ãŒã‚ã‚Šã¾ã™ã€‚ファイルã®ä¾å˜é–¢ä¿‚ãŒã‚ã‹ã‚Œã°å‰²ã¨å†…容ã¯äºˆæ¸¬ãŒã¤ã„ãŸã‚Šã—ã¾ã™ã€‚ã‚㨠GCC ã®ã‚³ãƒ¼ãƒ‰çœºã‚る技法ã¨ã—㦠gdb ã§é©å½“ã« break ã—ã‹ã‘ã¦ãƒãƒƒã‚¯ãƒˆãƒ¬ãƒ¼ã‚¹ã‚’見るã¨æ™®é€šã«è¿½ã†ã‚ˆã‚Šãƒ©ã‚¯ã¨ã„ã†ã®ãŒã‚ã‚‹ã®ã§ã™ãŒãã‚Œã¯åˆ¥ã®è©±ã€‚ ã§ã¾ã make ã®å‡ºåŠ›ã¨ã‹è¦‹ã¦ã‚‹ã¨ GCC ã£ã¦ã™ã”ã„メタプãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã®å®åº«ã ãªãã¨æ€ã£ãŸã®ã§ã—ãŸã€‚特ã«ãƒ•ãƒãƒ³ãƒˆã‚¨ãƒ³ãƒ‰å´ã‚ˆã‚Šãƒãƒƒã‚¯ã‚¨ãƒ³ãƒ‰å´ãŒã«ã‚“ã¨ã‚‚ã‹ã‚“
ã¯ã˜ã‚ã¦ã®ã«ã(2007-11-21)
_ switchã®å±•é–‹ http://alohakun.blog7.fc2.com/blog-entry-878.html を見ã¦ãŸã—ã‹ã«ã©ã†ã„ã†æ„Ÿã˜ãªã®ã‹ãªãƒ¼ã¨ã€‚ ãŸã¶ã‚“ stmt.c ã® expand_case @gcc-4.2.2 。 最åˆã« unique ãªã‚‰ãƒ©ãƒ™ãƒ«ã®æ•°ã¨ã‹é©å½“ã«èª¿ã¹ã¦ã€ default 以外ターゲットãªã‹ã£ãŸã‚‰ãã“ã« jump ã¨ã‹ã€‚ ん㧠bit ãªã‚“ã¡ã‚ƒã‚‰ãŒã©ã†ã“ã†ã£ã¦ã®ãŒå…¥ã£ã¦ã‚“ã ã‘ã©ã€ よãã‚ã‹ã‚‰ã‚“ã‹ã£ãŸã‹ã‚‰ããã£ãŸã‚‰ ã“ã‚Œé¢ç™½ã„ãªã€‚ http://gcc.gnu.org/ml/gcc-patches/2003-01/msg01733.html int main(int i) { switch (i) { case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '
Demystifying GCC (an OOPSLA 2006 tutorial)
Demystifying GCC Under the Hood of the GNU Compiler Collection (An OOPSLA 2006 Tutorial) Resources for tutorial participants: Main handout for the tutorial Extra slides on RTL/machine descriptions that didn't make it into the handouts Code used in the exercises GNU FTP Mirror List for downloading GCC sources (external link) Useful links: GCC home page Wikipedia entry for GCC, containing histor
インタプリタを模倣　- Teny’s log
上ã®ã‚¨ãƒ³ãƒˆãƒªã§ã€ ç§ã¯ã€çµæ§‹ã€ç¢ºèªã®ãŸã‚ã ã‘ã®ã‚³ãƒ¼ãƒ‰ã‚’書ãã“ã¨ãŒå¤šã„ã®ã§ã€Makefile ãªã©ç”¨æ„ã›ãšã« compile ã™ã‚‹ã“ã¨ãŒå¤šã„ã§ã™ã€‚ãã®ãŸã‚ã€make コマンドã ã‘ã§ã¯ç‰©è¶³ã‚Šã¾ã›ã‚“。 ãªã©ã¨æ›¸ã„ã¦ã„ã¾ã™ãŒã€å®Ÿã¯ã€ç¢ºèªã®ãŸã‚ã ã‘ã®ã‚³ãƒ¼ãƒ‰ã®å ´åˆã¯ã€ #ifdef COMPILES_AND_PERFORMS_THIS_FILE ### Type "sh FILENAME" out=`echo $0|sed 's/.[^.]*$//g'` CC="gcc -g -Wall" ${CC:-cc} $0 -o $out && ./$out && rm -f $out exit #endif #include <stdio.h> #include <stdlib.h> int main (int argc, char * argv[]) { printf ("%s executed.\n",
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gccã®æœ€é©åŒ–オプション（１）
今回ã¯æœ€é©åŒ–オプションã®ã¾ã¨ã‚ã¨LINK関連ã®ã‚ªãƒ—ションã®è£œè¶³ï¼ŒãŠã‚ˆã³å‡ºåŠ›ã®ç¨®é¡žã®åˆ¶å¾¡ã‚ªãƒ—ションã®è£œè¶³ï¼Œã¾ãŸIntel386ã¨AMD x86-64オプションã«ã¤ã„ã¦èª¬æ˜Žã™ã‚‹ï¼Ž （ç†è€…） 本æ¥ã¯æœ€é©åŒ–オプションを付ã‘ãªãã¨ã‚‚ç†æƒ³çš„ãªã‚³ãƒ¼ãƒ‰ã‚’生æˆã™ã‚‹ã“ã¨ãŒã‚³ãƒ³ãƒ‘イラã®å½¹ç›®ã§ã™ï¼Žã—ã‹ã—ãã®ã‚ˆã†ãªãƒ¬ãƒ™ãƒ«ã«é”ã—ã¦ã„ãªã„以上，使ã†å´ãŒç†è§£ã—ã¦æœ€é©åŒ–ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã‚’ä»˜åŠ ã—ã¦ã‚„らãªã‘ã‚Œã°ãªã‚Šã¾ã›ã‚“． 特ã«ã“ã ã‚らãªã„ã®ã§ã‚ã‚Œã°ï¼Œæ™®éçš„ãªæœ€é©åŒ–をコマンド・オプション一ã¤ã§è¡Œã†ã“ã¨ãŒå¯èƒ½ã§ã™ï¼Ž â— -O ã“ã®æœ€é©åŒ–オプションを付ã‘ã‚‹ã“ã¨ã§ï¼Œç„¡ç†ã®ãªã„最é©åŒ–ã‚’è¡Œã†ã“ã¨ãŒã§ãã¾ã™ï¼Žã‚ã¾ã‚Šã‚³ãƒ³ãƒ‘イル時間をã‹ã‘ãšï¼Œãƒ¡ãƒ¢ãƒªã‚‚消費ã—ãªã„程度ã«ï¼Œã‚³ãƒ¼ãƒ‰ãƒ»ã‚µã‚¤ã‚ºã¨å®Ÿè¡Œæ™‚間を減らã™æœ€é©åŒ–ã‚’è¡Œã„ã¾ã™ï¼ŽãªãŠï¼Œãƒ•ãƒ¬ãƒ¼ãƒ ・ãƒã‚¤ãƒ³ã‚¿ãªã—ã§ã‚‚デãƒãƒƒã‚°ã‚’サãƒãƒ¼ãƒˆã§ãる機種ã§ã¯ï¼Œ-fomit-frame-pointerをオンã«ã—ã¾ã™ï¼Ž -O1オプ
GCC ã®æœ€é©åŒ–㧠printf ㌠puts ã«ãªã‚‹å ´åˆ - bkブãƒã‚°
GCC ã®æœ€é©åŒ–㧠printf ㌠puts ã«ãªã‚‹å ´åˆ GCC ã®æœ€é©åŒ–ã«ã‚ˆã‚Š printf ã®å‘¼ã³å‡ºã—㌠puts ã«ç½®ãæ›ã‚ã‚‹ã“ã¨ãŒã‚ã‚‹ã€ã¨ 先日ã€æ•™ãˆã¦ã‚‚らã£ãŸã®ã§è©¦ã—ã¦ã¿ã¾ã—ãŸã€‚ 次ã®ã‚ˆã†ãª hello.c ã‚’ã¾ãšæœ€é©åŒ–ãªã—ã§ã‚³ãƒ³ãƒ‘イルã—ã¾ã™ã€‚ #include <stdio.h> int main () { printf("hello, world\n"); return 0; } % gcc -o hello hello.c ãã—ã¦ã€å®Ÿè¡Œå¯èƒ½ãƒ•ã‚¡ã‚¤ãƒ« hello ã‚’ readelf コマンドã§è¦—ã„ã¦ã¿ã‚‹ã¨ã€ printf ã¨ã„ã†æ–‡å—列ãŒè¦‹ã¤ã‹ã‚Šã¾ã™ã€‚ puts ã¯è¦‹ã‚ãŸã‚Šã¾ã›ã‚“。 % readelf -a hello | egrep 'printf|puts' 080495d0 00000207 R_386_JUMP_SLOT 00000000 printf 2: 0000
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