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2013年11月06日(水) 旧暦 [n年日記] [更新:"2013/11/06 16:42:42"]#1 [cross] gcc-4.1 for nios2
既に動く gcc-3.4.6 があるので、もしそれを使って crtstuff.c から
アセンブリ語を出して見たらどうなるか、と調べて見た。
操作行 (command line) の入力は、gcc-4.1 を作る時のものから借用する
genova@makoto 14:55:09/131106(..build/gcc)% \ /usr/pkg/cross/bin/nios2-elf-gcc -S \ -B/usr/pkg/cross/nios2-elf/bin/ \ -B/usr/pkg/cross/nios2-elf/lib/ -isystem \ /usr/pkg/cross/nios2-elf/include -isystem \ /usr/pkg/cross/nios2-elf/sys-include -O2 -O2 -g -O2 -DIN_GCC \ -DCROSS_COMPILE -W -Wall -Wwrite-strings -Wstrict-prototypes \ -Wmissing-prototypes -Wold-style-definition -isystem ./include \ -I. -I. -I../../gcc-4.1/gcc \ -I../../gcc-4.1/gcc/. -I../../gcc-4.1/gcc/../include \ -I../../gcc-4.1/gcc/../libcpp/include -g0 \ -finhibit-size-directive -fno-inline-functions -fno-exceptions \ -fno-zero-initialized-in-bss -fno-unit-at-a-time \ -Dinhibit_libc \ -c ../../gcc-4.1/gcc/crtstuff.c -DCRT_BEGIN \ -o crtbegin.S In file included from ../../gcc-4.1/gcc/crtstuff.c:71: ../../gcc-4.1/gcc/unwind-dw2-fde.h:36: warning: ignoring #pragma GCC visibility ../../gcc-4.1/gcc/unwind-dw2-fde.h:185: warning: ignoring #pragma GCC visibilitygenova@makoto 14:55:23/131106(..build/gcc)% cat -n crtbegin.S | tail -15 119 stw ra, 0(sp) 120 #APP 121 .section .init 122 #NO_APP 123 call frame_dummy 124 #APP 125 .section .text 126 #NO_APP 127 ldw ra, 0(sp) 128 addi sp, sp, 4 129 ret 130 .weak _Jv_RegisterClasses 131 .weak __deregister_frame_info 132 .weak __register_frame_info 133 .ident "GCC: (GNU) 3.4.6 (Altera Nios II 0 b0)"genova@makoto 14:55:36/131106(..build/gcc)% ＠ -da option for gcc:
gcc には -dletter という指定があります。次に letter = a の場合の例を示します。
/export/git-work/nios2/build/./gcc/xgcc -da \ -B/export/git-work/nios2/build/./gcc/ \ -B/usr/pkg/cross/nios2-elf/bin/ \ -B/usr/pkg/cross/nios2-elf/lib/ -isystem \ /usr/pkg/cross/nios2-elf/include -isystem \ /usr/pkg/cross/nios2-elf/sys-include -O2 -O2 -g -O2 -DIN_GCC \ -DCROSS_COMPILE -W -Wall -Wwrite-strings -Wstrict-prototypes \ -Wmissing-prototypes -Wold-style-definition -isystem ./include \ -I. -I. -I../../gcc-4.1/gcc \ -I../../gcc-4.1/gcc/. -I../../gcc-4.1/gcc/../include \ -I../../gcc-4.1/gcc/../libcpp/include -g0 \ -finhibit-size-directive -fno-inline-functions -fno-exceptions \ -fno-zero-initialized-in-bss -fno-unit-at-a-time \ -Dinhibit_libc \ -c ../../gcc-4.1/gcc/crtstuff.c -DCRT_BEGIN \ -o crtbegin.oこの結果、次のような中間のものが残されます。 genova@makoto 16:20:38/131106(..build/gcc)% ls -lt |grep crtstuff.c -rw-r--r-- 1 makoto wheel 445 Nov 6 16:20 crtstuff.c.38.greg -rw-r--r-- 1 makoto wheel 13763 Nov 6 16:20 crtstuff.c.37.lreg -rw-r--r-- 1 makoto wheel 9337 Nov 6 16:20 crtstuff.c.36.sched1 -rw-r--r-- 1 makoto wheel 9200 Nov 6 16:20 crtstuff.c.34.life2 -rw-r--r-- 1 makoto wheel 6482 Nov 6 16:20 crtstuff.c.32.split1 -rw-r--r-- 1 makoto wheel 6617 Nov 6 16:20 crtstuff.c.31.regmove -rw-r--r-- 1 makoto wheel 6640 Nov 6 16:20 crtstuff.c.29.ce2 -rw-r--r-- 1 makoto wheel 6824 Nov 6 16:20 crtstuff.c.28.combine -rw-r--r-- 1 makoto wheel 60 Nov 6 16:20 crtstuff.c.27.ner -rw-r--r-- 1 makoto wheel 10261 Nov 6 16:20 crtstuff.c.26.life1 -rw-r--r-- 1 makoto wheel 7951 Nov 6 16:20 crtstuff.c.25.cse2 -rw-r--r-- 1 makoto wheel 8383 Nov 6 16:20 crtstuff.c.23.loop2_done -rw-r--r-- 1 makoto wheel 8335 Nov 6 16:20 crtstuff.c.18.loop2_init -rw-r--r-- 1 makoto wheel 5670 Nov 6 16:20 crtstuff.c.17.loop2 -rw-r--r-- 1 makoto wheel 7851 Nov 6 16:20 crtstuff.c.15.ce1 -rw-r--r-- 1 makoto wheel 6617 Nov 6 16:20 crtstuff.c.14.bp -rw-r--r-- 1 makoto wheel 7562 Nov 6 16:20 crtstuff.c.13.cfg -rw-r--r-- 1 makoto wheel 8158 Nov 6 16:20 crtstuff.c.12.bypass -rw-r--r-- 1 makoto wheel 5843 Nov 6 16:20 crtstuff.c.11.old-loop -rw-r--r-- 1 makoto wheel 11618 Nov 6 16:20 crtstuff.c.10.gcse1 -rw-r--r-- 1 makoto wheel 8199 Nov 6 16:20 crtstuff.c.09.cse1 -rw-r--r-- 1 makoto wheel 8544 Nov 6 16:20 crtstuff.c.08.jump -rw-r--r-- 1 makoto wheel 6131 Nov 6 16:20 crtstuff.c.07.vregs -rw-r--r-- 1 makoto wheel 5827 Nov 6 16:20 crtstuff.c.06.unshare -rw-r--r-- 1 makoto wheel 5827 Nov 6 16:20 crtstuff.c.05.initvals -rw-r--r-- 1 makoto wheel 5827 Nov 6 16:20 crtstuff.c.03.locators -rw-r--r-- 1 makoto wheel 5827 Nov 6 16:20 crtstuff.c.02.sibling -rw-r--r-- 1 makoto wheel 6108 Nov 6 16:20 crtstuff.c.01.eunotes -rw-r--r-- 1 makoto wheel 6485 Nov 6 16:20 crtstuff.c.00.expand -rw-r--r-- 1 makoto wheel 13929 Nov 6 16:19 crtstuff.c.20.combine -rw-r--r-- 1 makoto wheel 27116 Nov 6 16:19 crtstuff.c.33.sched2 -rw-r--r-- 1 makoto wheel 25413 Nov 6 16:19 crtstuff.c.31.bbro -rw-r--r-- 1 makoto wheel 18849 Nov 6 16:19 crtstuff.c.30.rnreg -rw-r--r-- 1 makoto wheel 18914 Nov 6 16:19 crtstuff.c.29.ce3 -rw-r--r-- 1 makoto wheel 22974 Nov 6 16:19 crtstuff.c.27.flow2 -rw-r--r-- 1 makoto wheel 14594 Nov 6 16:19 crtstuff.c.26.postreload -rw-r--r-- 1 makoto wheel 16300 Nov 6 16:19 crtstuff.c.25.greg -rw-r--r-- 1 makoto wheel 28164 Nov 6 16:19 crtstuff.c.24.lreg -rw-r--r-- 1 makoto wheel 20560 Nov 6 16:19 crtstuff.c.23.sched -rw-r--r-- 1 makoto wheel 14392 Nov 6 16:19 crtstuff.c.22.regmove -rw-r--r-- 1 makoto wheel 14152 Nov 6 16:19 crtstuff.c.21.ce2 -rw-r--r-- 1 makoto wheel 21948 Nov 6 16:19 crtstuff.c.19.life -rw-r--r-- 1 makoto wheel 18409 Nov 6 16:19 crtstuff.c.18.cse2 -rw-r--r-- 1 makoto wheel 18514 Nov 6 16:19 crtstuff.c.14.ce1 -rw-r--r-- 1 makoto wheel 14438 Nov 6 16:19 crtstuff.c.12.bp -rw-r--r-- 1 makoto wheel 17897 Nov 6 16:19 crtstuff.c.11.cfg -rw-r--r-- 1 makoto wheel 19066 Nov 6 16:19 crtstuff.c.10.bypass -rw-r--r-- 1 makoto wheel 10795 Nov 6 16:19 crtstuff.c.09.loop -rw-r--r-- 1 makoto wheel 36832 Nov 6 16:19 crtstuff.c.08.gcse -rw-r--r-- 1 makoto wheel 10912 Nov 6 16:19 crtstuff.c.07.addressof -rw-r--r-- 1 makoto wheel 19252 Nov 6 16:19 crtstuff.c.06.cse -rw-r--r-- 1 makoto wheel 18068 Nov 6 16:19 crtstuff.c.05.null -rw-r--r-- 1 makoto wheel 17570 Nov 6 16:19 crtstuff.c.04.jump -rw-r--r-- 1 makoto wheel 9442 Nov 6 16:19 crtstuff.c.01.rtl ( つっこみ )
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