Mercurial > pub > dyncall > dyncall
annotate ToDo @ 250:7cb8a0aaf638
- note about c99 (+ anon struct/union) requirements in doc
| author | Tassilo Philipp |
|---|---|
| date | Sun, 14 May 2017 00:19:15 +0200 |
| parents | 75093cde6d10 |
| children | 7520e2260097 |
| rev | line source |
|---|---|
| 0 | 1 1.0: |
| 2 ---- | |
| 201 | 3 - dyncall supports calls to functions where prototype exists (with and without varargs); however not when no |
| 4 prototype exist (e.g. just calling some pointer), without any declaration... even possible in C, as one has | |
| 5 to cast to the function type? need to support? | |
| 6 | |
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7 - make sure all assembly files declare (or are built) by setting the noexecstack flag, |
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8 compared to translating code with gcc, it's manual for the assembler; this depends on arch |
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- marking off solaris/sparc (32 bit) as completely supported (just tested sparc callbacks on solaris (with gnu toolchain, though), works)
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9 support (currently it's only done for x86/x64 ELF, but doesn't always work I think... e.g. openbsd 4.0, maybe too old?): |
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10 |
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11 "When you compile source code normally, gcc takes care of adding the GNU_STACK |
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12 markings so that the final object code is not marked with an executable stack |
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13 unless it actually needs it. However, if you compile assembly code, gcc will |
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14 not automatically add GNU_STACK markings." |
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15 |
| 155 | 16 - dyncallback's "stack_cleanup" can be removed from non x86 impls... test if they still work |
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17 - target a minimum c version, for use with -pedantic, etc.? Right now we use e.g. extensions |
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18 for anon structs, etc. |
| 86 | 19 - the CallVM-free functions are per VTable, however the latter can be changed out |
| 20 at runtime... which basically changes potentially the deallocator... | |
| 21 same goes for functions setting the mode. think about how to make this safer - currently | |
| 22 we have a higher flexibility and we need to potentially clean up from the mode we are in, | |
| 23 however, this is open to misuse | |
| 78 | 24 - check all vararg calling conv implementations if they promote correctly |
| 25 (e.g. float to double); we used to not care as it was the user's job to | |
| 26 think of that, but we allow users to use ArgFloat, etc. on "..." now, | |
| 27 taking care of the promotion; so it should be consistent all across the | |
| 28 implementations -> also write testcode specifically for that | |
| 0 | 29 - autovar was never really pushed all the way through and still plays second |
| 9 | 30 fiddle to dyncall_macros.h, clean this all up, eventually (Tassilo: for now, I |
| 31 removed out of sync files to avoid confusion; but still probably duped code) | |
| 0 | 32 - ppc32 callback fixes on bsd |
| 69 | 33 - add portable "make install" |
| 34 * make install should also install manpages | |
| 0 | 35 - mailing list announcements (html email?) |
| 36 - fix for NDS: | |
| 69 | 37 * ARM: |
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38 - callback_plain retval wrong (not only platform), area on stack where |
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39 it's stored is probably not zeroed, so half-words, etc., come with garbage |
| 69 | 40 * THUMB: |
| 41 - ellipsis (might be test itself, not respecting fixed part of args) | |
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42 - callback_plain retval, see above under ARM |
| 69 | 43 - callf |
| 24 | 44 - support Solaris11 CFLAGS with -D_FILE_OFFSET_BITS=64 |
| 45 - make sure selinux works (esp. regarding NX bits, asm might need (or similar): .section .note.GNU-stack,"",@progbits) | |
| 54 | 46 Daniel has a patch for it, if needed, implementing allocwx with two memory blocks, one for w^x, mmaped to one for r|x |
| 68 | 47 - support /SAFESEH on cl/win32 |
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48 - test code functions should be in .so files, optionally, so the suites can directly |
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49 be used to test dycnall bindings |
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50 - pkg-config support? |
| 90 | 51 - quadmath support (long double) |
| 117 | 52 - add tests using alloca(), as this might depend on the frame pointer being correctly |
| 53 set; we don't check for this, currently, at all | |
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54 - test on OpenBSD 6.0 which comes with W^X by default |
| 0 | 55 |
| 56 portasm: | |
| 57 -------- | |
| 58 - add solaris support for x64 | |
| 59 | |
| 60 dyncall: | |
| 61 -------- | |
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62 - find big endian arm box (also hardfloat), e.g. cubietruck: http://blog.netbsd.org/tnf/entry/working_arm_multiprocessor_support |
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63 - test if armhf/thumb is actually working... pulls in arm mode code in dyncall_callvm.c |
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64 - dyncall_call_mips_n32.h and dyncall_call_mips_n64.h are pretty much the same, share code |
| 0 | 65 - support for return values: aggregate return values |
| 66 - support for argument values: structures, half-precision, vector types, long double | |
| 67 - consider automatic type-promotion for arguments passed through DC_CALL_C_ELLIPSIS_VARARGS; | |
| 68 this would make it easier to just pass arguments instead of having to know about the C | |
| 88 | 69 type promotions (this is partly done, see todo-item above under 1.0) |
| 0 | 70 - syscalls for x64 |
| 71 * bsd | |
| 72 * linux | |
| 73 - other syscalls | |
| 110 | 74 - MIPS32 softfloat support (-msoft-float) |
| 135 | 75 - test MIPS32 eabi big endian (current port works on psp, which is little endian) |
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76 - implement MIPS64 N32 (gcc -mabi=n32); both, little and big-endian (looks like NetNBSD on and |
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77 EdgeRouter lite uses this: https://blog.netbsd.org/tnf/entry/hands_on_experience_with_edgerouter) |
| 129 | 78 - implement MIPS64 EABI (gcc -mabi=eabi); both, little and big-endian |
| 141 | 79 - support for Minix/arm |
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80 - improve ellipsis test: |
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81 * test not just with one fixed arg, to also simulate alignment problems |
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82 * test return values |
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83 * convert from c++ to c, to have it also on plan9, and more portability |
| 0 | 84 |
| 85 dynload: | |
| 86 -------- | |
| 244 | 87 - dlGetLibraryPath: dl_iterate_phdr() used on OpenBSD, but not available on version < 3.7 |
| 0 | 88 - bug: test/nm crashes on qemu mips linux o32 debian etch |
| 89 - test/resolve_self crashes/asserts on windows and bsds | |
| 90 - rename SymsInit to InitSyms and similar for cleanup function to reflect naming | |
| 91 in dyncall | |
| 92 - get rid of Dl_info and friends (_GNU_SOURCE) in dynload/dynload_syms_elf.c | |
| 93 for implementation of dlSymsNameFromValue(..) | |
| 94 - check if PSP can support dynload (missing elf.h, dlfcn.h, etc.); fixup readme if successful | |
| 84 | 95 - some functionality like java's System.mapLibraryName('name') might be helpful? |
| 0 | 96 |
| 97 dyncallback: | |
| 98 ------------ | |
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99 - callback_plain's return value not correct anymore on NDS (maybe just broken testcode?), |
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100 see above under 1.0 items |
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101 * check other platforms also, if asm stub initializes retval space, correctly |
| 21 | 102 - finish PPC32 callbacks (see bugs section, below, BSD not working) |
| 110 | 103 - MIPS32 softfloat support (-msoft-float) |
| 135 | 104 - test MIPS32 eabi big endian (current port works on psp, which is little endian) |
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105 - implement MIPS64 N32 (gcc -mabi=n32); both, little and big-endian (looks like NetNBSD on and |
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106 EdgeRouter lite uses this: https://blog.netbsd.org/tnf/entry/hands_on_experience_with_edgerouter) |
| 129 | 107 - implement MIPS64 EABI (gcc -mabi=eabi); both, little and big-endian |
| 141 | 108 - support for Minix/arm |
| 0 | 109 |
| 110 bindings: | |
| 111 --------- | |
| 112 - release bindings as standalone packages (already done for rbdc as a gem and rdyncall on cran) | |
| 113 * add note to documentation, where bindings are and that some bindings are svn-only ATM | |
| 114 - add rdoc documentation to ruby gem | |
| 115 - add pydoc for python | |
| 116 - add manpage for shdc | |
| 117 - expose callf-convenience functions to go | |
| 118 - add godoc for godc | |
| 119 - add javadoc to java | |
| 120 - add more bindings | |
| 121 - add callback support for erlang, go, java, lua, python and ruby (and shell? how?) | |
| 122 - add call-conv-mode-support for rbdc through signature | |
| 123 | |
| 124 manual: | |
| 125 ------- | |
| 201 | 126 - introduce doc overview tables and common vocab for calling convention specifics, following example of table on page 13 of https://www.linux-mips.org/pub/linux/mips/doc/ABI/MIPS-N32-ABI-Handbook.pdf; also as inspiration, e.g. user 'preserved' instead of 'permanent', etc. https://developer.apple.com/library/content/documentation/Xcode/Conceptual/iPhoneOSABIReference/Articles/ARMv6FunctionCallingConventions.html#//apple_ref/doc/uid/TP40009021-SW4 |
| 127 - make stack layout diagrams better, e.g. add grow direction (example: https://developer.apple.com/library/content/documentation/Xcode/Conceptual/iPhoneOSABIReference/art/arm_stack.jpg on https://developer.apple.com/library/content/documentation/Xcode/Conceptual/iPhoneOSABIReference/Articles/ARMv6FunctionCallingConventions.html#//apple_ref/doc/uid/TP40009021-SW1) | |
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128 - callconv diagrams: |
| 98 | 129 * good idea to review it all, anyways, if the calling conventions are actually |
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130 represented correctly (and if they are in sync with the .pdf, we used to have |
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131 problems with multirow.4ht) |
| 0 | 132 - provide more examples on how to use dyncall, dynload and dyncallback |
| 133 * e.g. enhance manual with a couple of examples (e.g. calling MessageBoxA on windows, etc.) | |
| 134 - manuals for bindings (as stated in bindings-section, above) | |
| 117 | 135 - under "dyncall support", in each calling convention appendix, list crucial details of e.g. big/little endian support, etc. |
| 136 - specify integer models in use, use common ILP32, LLP64, etc. terms | |
| 0 | 137 |
| 88 | 138 regressions: |
| 139 ------------ | |
| 0 | 140 - Haiku/gmake build doesn't build dynload due to the fact, that elf.h is not found |
| 141 on default installations (one has to install the system headers) | |
| 142 * add to doc | |
| 143 - Solaris/gmake build doesn't build dynload and tests anymore (maybe not even dyncallback) | |
| 144 - test arm32/ATPCS/THUMB (and then change Status in doc Appendix) | |
| 145 - look over code and fix TODO or @@@ marks | |
| 146 - add ppc-support to doc (both, 32 and 64, as well as little and big endian remarks) | |
| 147 | |
| 148 nice to have: | |
| 149 ------------- | |
| 150 - update: microsoft visual c++ build files - integrate all test suites in solution file | |
| 151 - consistency: on x64 platforms: make both ABIs available ('win64','sysv') for all x64 OS ports | |
| 152 - microsoft build enhancement: autodetect assembly via C preprocessor (like with .S gcc files) | |
| 153 - test/thunk: some platforms do not allow for allocation of executable code on heap and stack -- | |
| 154 currently this test will crash, maybe we should collect information which platforms allow and which not. | |
| 155 | |
| 156 bugs: | |
| 157 ----- | |
| 88 | 158 - setting callconv, specifically for platforms that have only one (default)) excepts on some |
| 6 | 159 platforms, eg. setting X64_sysv on amd64/Linux - keeping cdecl which is the same in |
| 88 | 160 this case, works (this should work now...) |
| 0 | 161 - vararg function calls don't work for ARM THUMB mode (Daniel's new interface for modesetting for varag |
| 162 args should be used); adapt test/ellipsis and/or retest | |
| 163 | |
| 164 missing implementations (descending priority): | |
| 165 ---------------------------------------------- | |
| 166 - riscv | |
| 167 - itanium | |
| 88 | 168 - superh/j-core |
| 0 | 169 - 68k, 88k, 6502, etc. |
| 88 | 170 - arc |
| 0 | 171 - alpha |
| 172 - cell | |
| 173 - blackfin | |
| 88 | 174 - seaforth |
| 21 | 175 - s/390 |
| 0 | 176 - z80 |
| 177 - hppa | |
| 178 - vax | |
| 179 - atmel avr | |
| 180 - propeller | |
| 181 - amd29k | |
| 182 |