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diff --git a/docs/ptspts.blogspot.com_2009_11_tiny-self-contained-c-compiler-using.txt b/docs/ptspts.blogspot.com_2009_11_tiny-self-contained-c-compiler-using.txt new file mode 100644 index 0000000..5105d16 --- /dev/null +++ b/docs/ptspts.blogspot.com_2009_11_tiny-self-contained-c-compiler-using.txt @@ -0,0 +1,567 @@ + #[1]pts.blog - Atom [2]pts.blog - RSS [3]pts.blog - Atom + +[4]pts.blog + +Flattr this blog + +Blog Archive + + * [5]|> [6]2021 (1) + + [7]|> [8]October (1) + + * [9]|> [10]2020 (3) + + [11]|> [12]December (1) + + [13]|> [14]April (2) + + * [15]|> [16]2019 (2) + + [17]|> [18]February (2) + + * [19]|> [20]2018 (5) + + [21]|> [22]June (1) + + [23]|> [24]April (4) + + * [25]|> [26]2017 (6) + + [27]|> [28]December (1) + + [29]|> [30]October (1) + + [31]|> [32]September (1) + + [33]|> [34]February (3) + + * [35]|> [36]2016 (8) + + [37]|> [38]November (1) + + [39]|> [40]July (1) + + [41]|> [42]June (1) + + [43]|> [44]May (1) + + [45]|> [46]April (1) + + [47]|> [48]March (1) + + [49]|> [50]February (1) + + [51]|> [52]January (1) + + * [53]|> [54]2015 (5) + + [55]|> [56]December (1) + + [57]|> [58]November (1) + + [59]|> [60]March (2) + + [61]|> [62]February (1) + + * [63]|> [64]2014 (22) + + [65]|> [66]October (2) + + [67]|> [68]September (3) + + [69]|> [70]August (2) + + [71]|> [72]July (3) + + [73]|> [74]June (2) + + [75]|> [76]April (3) + + [77]|> [78]January (7) + + * [79]|> [80]2013 (24) + + [81]|> [82]December (9) + + [83]|> [84]November (2) + + [85]|> [86]October (3) + + [87]|> [88]August (5) + + [89]|> [90]May (1) + + [91]|> [92]April (2) + + [93]|> [94]March (1) + + [95]|> [96]February (1) + + * [97]|> [98]2012 (21) + + [99]|> [100]December (2) + + [101]|> [102]November (5) + + [103]|> [104]September (2) + + [105]|> [106]August (2) + + [107]|> [108]June (2) + + [109]|> [110]April (2) + + [111]|> [112]March (2) + + [113]|> [114]February (1) + + [115]|> [116]January (3) + + * [117]|> [118]2011 (30) + + [119]|> [120]December (2) + + [121]|> [122]November (3) + + [123]|> [124]October (5) + + [125]|> [126]September (1) + + [127]|> [128]August (6) + + [129]|> [130]June (3) + + [131]|> [132]May (1) + + [133]|> [134]April (3) + + [135]|> [136]March (1) + + [137]|> [138]February (2) + + [139]|> [140]January (3) + + * [141]|> [142]2010 (49) + + [143]|> [144]December (6) + + [145]|> [146]November (6) + + [147]|> [148]October (3) + + [149]|> [150]September (1) + + [151]|> [152]August (4) + + [153]|> [154]July (3) + + [155]|> [156]June (10) + + [157]|> [158]May (2) + + [159]|> [160]April (2) + + [161]|> [162]March (3) + + [163]|> [164]February (4) + + [165]|> [166]January (5) + + * [167]v [168]2009 (53) + + [169]|> [170]December (5) + + [171]v [172]November (9) + o [173]How fast does 8g in Google Go compile? + o [174]How to write a program with multiple packages in + G... + o [175]FUSE protocol tutorial for Linux 2.6 + o [176]Buffered IO speed test of Google Go + o [177]How to read a whole file to String in Java + o [178]How to convert a Unix timestamp to a civil date + o [179]AES encpytion in Python using C extensions + o [180]How to use \showhyphens with beamer + o [181]Tiny, self-contained C compiler using TCC + uClibc + + [182]|> [183]October (7) + + [184]|> [185]September (4) + + [186]|> [187]August (4) + + [188]|> [189]July (3) + + [190]|> [191]June (6) + + [192]|> [193]May (6) + + [194]|> [195]April (5) + + [196]|> [197]March (4) + + * [198]|> [199]2008 (1) + + [200]|> [201]September (1) + +Recommended + + * [javascript] + [202]IO Digital Sec + 1 year ago + +2009-11-01 + +Tiny, self-contained C compiler using TCC + uClibc + + This post presents how I played with a small C compiler and a small + libc on Linux. I've combined TCC (the [203]Tiny C Compiler) 0.9.25 and + [204]uClibc 0.9.26, compressed with [205]UPX 3.03 to a tiny, + self-contained C compiler for Linux i386. You don't need any external + files (apart from the compiler executable) to compile (or interpret) C + code, and the compiled executable will be self-contained as well. + + Here is how to download and use it for compilation on a Linux x86 or + x86_64 system: +$ uname +Linux +$ wget -O pts-tcc https://raw.githubusercontent.com/pts/pts-tcc/master/pts-tcc-0 +.9.26-uclibc-0.9.30.1 +$ chmod +x pts-tcc +$ ls -l pts-tcc +-rwxrwxr-- 1 pts pts 349640 Nov 1 13:07 pts-tcc +$ wget -O example1.c https://raw.githubusercontent.com/pts/pts-tcc/master/pts-tc +c/example1.c +$ cat example1.c +#! ./pts-tcc -run +int printf(char const*fmt, ...); +double sqrt(double x); +int main() { + printf("Hello, World!\n"); + return sqrt(36) * 7; +} +$ ./pts-tcc example1.c +$ file a.out +a.out: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), statically link +ed, not stripped +$ ls -l a.out +-rwxrwxr-x 1 pts pts 17124 Nov 1 13:17 a.out +$ ./a.out; echo "$?" +Hello, World! +42 +$ strace -e open ./pts-tcc example1.c +open("/proc/self/mem", O_RDONLY) = 3 +open("/proc/self/mem", O_RDONLY) = 3 +open("example1.c", O_RDONLY) = 3 +open("/proc/self/mem", O_RDONLY) = 3 +open("/proc/self/mem", O_RDONLY) = 3 +open("a.out", O_WRONLY|O_CREAT|O_TRUNC, 0777) = 3 +$ strace ./a.out +execve("./a.out", ["./a.out"], [/* 47 vars */]) = 0 +ioctl(0, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0 +ioctl(1, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0 +write(1, "Hello, World!\n", 14Hello, World! +) = 14 +_exit(42) = ? + + As you can see above, my version the compiler is less than 250k in + size, and it doesn't need any library files (such as libc.so) for + compilation (as indicated by the strace output above), and the compiled + binary doesn't need library files either. + + TCC can run the C program without creating any binaries: +$ rm -f a.out +$ ./pts-tcc -run example1.c; echo "$?" +Hello, World! +42 +$ head -1 example1.c +#! ./pts-tcc -run +$ chmod +x example1.c +$ ./example1.c; echo "$?" +Hello, World! + + TCC is a very fast compiler (see the speed comparisons on it web site), + it is versatile (it can compile the Linux kernel), but it doesn't + optimize much: the code it produces is usually larger and slower than + the output of a traditional, optimizing C compiler such as gcc -O2. + + The shell script [206]pts-tcc-0.9.26-compile.sh builds TCC from source, + adding uClibc, and compressing with UPX. + +Update: TCC 0.9.25 and uClibc 0.9.29 (or older) + + Please note that TCC 0.9.25 is buggy, don't use it! +$ wget -O pts-tcc https://raw.githubusercontent.com/pts/pts-tcc/master/pts-tcc/p +ts-tcc-0.9.25 +$ chmod +x pts-tcc +$ ls -l pts-tcc +-rwxr-xr-x 1 pts eng 241728 Apr 8 16:53 pts-tcc + +Update: TCC 0.9.25 and uClibc 0.9.30.1 + + Please note that TCC 0.9.25 is buggy, don't use it! +$ wget -O pts-tcc https://raw.githubusercontent.com/pts/pts-tcc/master/pts-tcc-0 +.9.25-uclibc-0.9.30.1 +$ chmod +x pts-tcc +$ ls -l pts-tcc +-rwxr-xr-x 1 pts eng 336756 Apr 8 16:53 pts-tcc + +Update: TCC 0.9.26 and uClibc 0.9.30.1 + +$ wget -O pts-tcc https://raw.githubusercontent.com/pts/pts-tcc/master/pts-tcc-0 +.9.26-uclibc-0.9.30.1 +$ chmod +x pts-tcc +$ ls -l pts-tcc +-rwxr-xr-x 1 pts eng 349640 Apr 8 16:53 pts-tcc + + Posted by pts at [207]13:06 + +6 comments: + + [208]Porcupine Saul said... + This looks like a cool tool, man. Thanks for sticking it out + there. + + [209]April 2, 2010 at 4:03:00PM GMT+2 [210][icon_delete13.gif] + + [211]Biff said... + I tried unsuccessfully to get this working on a build of + OpenWrt. Not sure what I've done wrong. It would be nice to + understand what configuration I need to do to transfer the + resultant tcc exe to an embedded system and make it work. + See here for the error. + https://forum.openwrt.org/viewtopic.php?id=26000 + + [212]August 6, 2010 at 12:29:00PM GMT+2 [213][icon_delete13.gif] + + [214]Unknown said... + I really really want to get this working, and I have tried many + different things, however I cannot seem to replicate the setup + you have. + When I use your wrapper, I get the following: + + echo 'int printf(char*fmt,...);main(){return + 1>printf("he110\n");}' + + ./i386-uclibc-gcc -static -o test test.c + + ./test + + grep -l he110 test.out + test.out + + ./i386-uclibc-gcc -o test test.c + /usr/bin/ld: cannot find /lib//libc.so.0 + /usr/bin/ld: cannot find /usr/lib//uclibc_nonshared.a + /usr/bin/ld: cannot find /lib//ld-uClibc.so.0 + collect2: ld returned 1 exit status + It seems to work statically, however I have something wrong with + ld, (the double slashes) and I cannot seem to find where in the + script or wrapper (or the proper environment variable) that can + fix this. I should note that I have also build the uclibc + toolchain using buildroot, and have it stored in + /usr/local/uclibc, but I cannot seem to get the uclibc ld to run + instead of the (/usr/bin/ld) one. + Furthermore, by using my compiler instead of the wrapper, I am + able to compile pts-tcc and it displays its help output, however + when trying to use it to compile I get: + user@ubuntu:~/Downloads/Tcc$ ./pts-tcc test.c + tcc: undefined symbol '__uClibc_main' + tcc: undefined symbol 'printf' + So if you could please give a little more details as to how to + set up your environment, and where things need to be located, I + would appreciate it. + Also, if you could tell me what is going on with this perl line: + for F in tcclibc.a "$UCLIBC_USR"/lib/{crt1.o,crti.o,crtn.o}; do + G="${F##*/}" + export NAME="data_${G%.*}" + perl -e '$_=join("",); my$L=length; + s@([^-+/\w])@sprintf"\\%03o",ord$1@ge; print".globl + $ENV{NAME}\n.section .data\n.align 4\n.size + $ENV{NAME},$L\n$ENV{NAME}:\n.string \"$_\\001\"\n"' <"$F" + done >tcc-0.9.25/libcdata.s + Thank you so much, I would really like to get this working. + (On a side note, would there be an binary copy already lying + around, for the i386 architecture?) + + [215]October 29, 2010 at 5:33:00AM GMT+2 + [216][icon_delete13.gif] + + [217]Unknown said... + Oops, found the binary, and it works great. I just cannot figure + out how you did it. + + [218]October 29, 2010 at 5:42:00AM GMT+2 + [219][icon_delete13.gif] + + [220]Darren said... + I -_love_ this - it's solved a big problem for me - trouble is I + just found a bug in tcc*.25, that's fixed in '26. I went to try + to modify your build script, but I don't have all the right + versions of things... any chance of an update? + (thx) + Darren + + [221]April 7, 2013 at 1:00:00PM GMT+2 [222][icon_delete13.gif] + + [223]pts said... + @Darren: I've updated pts-tcc so a version using TCC 0.9.26 is + available. Please see it in the updated blog post. + + [224]April 8, 2013 at 5:04:00PM GMT+2 [225][icon_delete13.gif] + + [226]Post a Comment + [227]Newer Post [228]Older Post [229]Home + Subscribe to: [230]Post Comments (Atom) + +References + + Visible links: + 1. https://ptspts.blogspot.com/feeds/posts/default + 2. https://ptspts.blogspot.com/feeds/posts/default?alt=rss + 3. https://ptspts.blogspot.com/feeds/6808943651025396418/comments/default + 4. https://ptspts.blogspot.com/ + 5. javascript:void(0) + 6. https://ptspts.blogspot.com/2021/ + 7. javascript:void(0) + 8. https://ptspts.blogspot.com/2021/10/ + 9. javascript:void(0) + 10. https://ptspts.blogspot.com/2020/ + 11. javascript:void(0) + 12. https://ptspts.blogspot.com/2020/12/ + 13. javascript:void(0) + 14. https://ptspts.blogspot.com/2020/04/ + 15. javascript:void(0) + 16. https://ptspts.blogspot.com/2019/ + 17. javascript:void(0) + 18. https://ptspts.blogspot.com/2019/02/ + 19. javascript:void(0) + 20. https://ptspts.blogspot.com/2018/ 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