antcc/obj/elf.c, branch trunkA little C compilerhttps://git.lemon.rip/antcc/atom?h=trunk2026-03-17T12:22:00+00:00REFACTOR: move sources to src/2026-03-17T12:22:00+00:00lemonlsof@mailbox.org2026-03-17T12:22:00+00:00urn:sha1:a8d6f8bf30c07edb775e56889f568ca20240bedfaarch64: LDR literal, cmp value2026-01-02T13:40:06+00:00lemonlsof@mailbox.org2026-01-02T13:40:06+00:00urn:sha1:12974932af785a2ab2cefb5bc80da3ee1211e3c3more aarch64 work2025-12-29T13:49:05+00:00lemonlsof@mailbox.org2025-12-29T13:49:05+00:00urn:sha1:5559e5fc1f6c10d88eb32febc3a36a8fc2502d58backend: start implementing aarch642025-12-28T18:02:39+00:00lemonlsof@mailbox.org2025-12-28T18:02:39+00:00urn:sha1:17b4861e53fd5be2107f3b7fd8bf77f3d2cc15danicer defaults and facilities for cross-compilation2025-12-17T19:32:23+00:00lemonlsof@mailbox.org2025-12-17T19:32:10+00:00urn:sha1:4545928179837c75ab1357b77e5723a4fdb60b98create distinct interned string type2025-12-15T21:39:52+00:00lemonlsof@mailbox.org2025-12-15T21:39:52+00:00urn:sha1:302e24671942051d70707586cf8c605a5815edac
Interned strings are used pervasively, so it's a good idea to add a
layer of type safety to differentiate them from general cstrs and avoid
potential bugs from comparing non-interned and interned strings. Not
that that's happened so far that I can remember, but it could.
I'm 90% sure it's legal to alias `struct {char c;}` pointers with `char`
pointers. This specific typedef gives type safety but with a simple
one-way `internstr -> const char *` typecast (with `&istr->c`).
Converting the other way around is more intentional: a straight up cast
`(internstr)cstr` which sticks out as unchecked and probably wrong, or
calling the intern(cstr) function, which is the right way.
various relocation related optimization2025-12-14T11:15:59+00:00lemonlsof@mailbox.org2025-12-14T11:15:59+00:00urn:sha1:d8b4e87af669c2b260686a5db67f7f02b4c164d9
With 59ca5a8db, querying if a symbol is defined is cheap. If we're
compiling code that calls foo() and we defined foo() in this compilation
unit, we already know its offset within the .text section, so use it
instead of emitting a relocation for the linker to handle. Also, put
small literal data in the .text section instead of .rodata. This seems
to improve performance (cache locality?), and as a bonus, it will be
good for aarch64's instr encoding with smallish PC-relative offsets.
elf: use a hashmap for looking up symbols2025-12-14T09:45:21+00:00lemonlsof@mailbox.org2025-12-14T09:45:21+00:00urn:sha1:59ca5a8db396e3e9c395793d49e1cab05d2d3261
Gets rid of linear-time findsym(), though needs some extra indirection
to emit sorted symbols.
s/amd64/x86_64/2025-12-12T16:40:35+00:00lemonlsof@mailbox.org2025-12-12T16:40:35+00:00urn:sha1:24bcc929477751b056e81e7772dc2bb3d11ce4a5elf: initialize str hashtable to a nicer size2025-12-09T18:20:01+00:00lemonlsof@mailbox.org2025-12-09T18:20:01+00:00urn:sha1:600d94645e128dc88fdb9a2b6d42a5b49a138fd5