forked from KolibriOS/kolibrios
142 lines
3.3 KiB
Plaintext
142 lines
3.3 KiB
Plaintext
Siemargl port comments
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Used github branch https://github.com/TinyCC/tinycc
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It have a vesion 0.9.26 with heads up to 0.9.27 - see ChangeLog
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Kolibri version errata/changelog:
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-added TCC_TARGET_MEOS as needed
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-leading_underscore by default is 0 (can use -f[no-]leading-underscore),
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otherwise (error) underscoring all symbols, not only cdecl
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-added message in tccmeos.c about missed symbols when linking KOS executable
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-start.o added automatically, when -nostdlib not used
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-to use standard ktcc lib must add -lck at commandline
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-default search paths are ./include ./lib from executable (under KOS need to
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use -Bpath_to_ktcc and put start.o in current dir)
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-when config.h is ready, compiler can be easy builded as [kos32-]gcc tcc.c libtcc.c
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see also makefile.kos32
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-silent (kos) -> writes to debugboard
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-impossible using with mingw-gcc compiled lib, incompatible library format:
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.o is PE-format from gcc but ELF from tcc, may be linux-gcc does it ok
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-__fastcall incompatible with other compilers. now stack freed by caller.
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must fix i386-gen.c@490,572 (fixed in other branch https://github.com/mirror/tinycc)
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-using __attribute__((packed)) see test82. need naming struct twice as in kos32sys1.h
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-using __attribute__ ((alias xxx)) restricted only for non "static inline" functions
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-erroneous or "non TCC" member using in nested structs or unions can lead to compiler internal error
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-not working: default search path are ./include ./lib from executable
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--under KOS need to use -Bpath_to_ktcc
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--start.o not found using -B (kos) - put near your.c file
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-bench timing coarse (0s or 1s), no usec in newlib gettimeofday. OK
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Tests status:
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asmtest +
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abitest not tested (embedding compiler)
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libtcctest not tested (embedding compiler)
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boundtest ----- alloca removed from tcc libtcc.c:945 (really not worked)
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tcctest most test ok, some problems with long double
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vla_test.c +
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pp/* + (minor comment error in 13.s)
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tests2/* : see below
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// errata
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skippin' tests
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test76 fail dollars in identifiers
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test34 fail (array assignment not supported)
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test73 fail compile (no stdint.h), printfloat, ARM specific
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test46 no stdin - removed funtionality read from console, but file ops works
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libc:
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-no "finished" in title of console program after exit console - use con_exit()
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-used system memory allocator (4096 bytes minimum)
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libc not complete. overall status:
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no files:
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errno.h - in stdio
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limits.h
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locale.h
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setjmp.h
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signall.h
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time.h - can use get_tick_count()/100 from kos32sys1.h
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wchar.h
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wctype.h
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functions absent list:
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math.h
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frexp
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ldexp
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modf
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fmod
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HUGE_VAL
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stdio.h:
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remove
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rename
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tmpfile
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tmpnam
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freopen
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setbuf
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setvbuf
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stdlib.h:
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atexit
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getenv
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system
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bsearch
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qsort
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mblen
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mbtowc
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wctomb
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mbstowcs
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wcstombs
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string.h
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strxfrm
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Status or libc tests
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---FAILED---
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strtoul incorrect work with big unsigned > MAX_LONG
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---NOT TESTED---
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no library fns realized
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qsort
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time
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---HANG---
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sscanf
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>TEST_F(0x1234p56) - no %a formats
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---STACK IS SMALL---
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use new -stack=1280000 option to pass test
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tstring
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strtodlong
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--other--
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fscanf
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-?scanf ignores width specs, '*' and [chars], cant read %a float
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-%n counts as parameter
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snprintf
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-some format misturbances
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-may incorrect prints unsigned > 2147483647L
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ungetc
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-ungetc fails if filepos == 0 - no tricks
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all file ops limited to 2Gb
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