13 Commits

Author SHA1 Message Date
Jakub Konka
ccf9bba61f Write out LC_DYSYMTAB together with dyld_stub_binder undef symbol 2020-10-04 15:31:47 +02:00
Jakub Konka
a927f24201 Generate more MachO exe boilerplate
* Convert draft to generate all relevant segments and sections in right places
* Do not prealloc space in text blocks until we can NOP
* Write out LC_LOAD_DYLINKER command
* Add LC_LOAD_DYLIB command in order to specify to load libSystem
* Redo update decl exports (similar to Elf globals, globals need to be contiguous in
  memory)
2020-10-04 15:31:47 +02:00
Jakub Konka
9306dbd619
Fix bug where __text section would get overwritten
Fixes a bug where the last written load command would accidentally
override the beginning of the __text section. Also defines missing
MachO constants and relocation structs/enums.

Signed-off-by: Jakub Konka <kubkon@jakubkonka.com>
2020-09-08 20:55:06 +02:00
Jakub Konka
04361dd461 Add more missing MachO constants and structs
Signed-off-by: Jakub Konka <kubkon@jakubkonka.com>
2020-08-30 09:47:36 +02:00
Jakub Konka
43b6d0e4b1
Add (empty) __TEXT segment load command
Also, link against `libSystem` by default when targeting macOS.

Signed-off-by: Jakub Konka <kubkon@jakubkonka.com>
2020-08-24 21:18:27 +02:00
Jakub Konka
9745e7b512 Clean up draft for merging into upstream
Signed-off-by: Jakub Konka <kubkon@jakubkonka.com>
2020-08-24 17:59:44 +02:00
Jakub Konka
1698e6d7a7 Link against libSystem when generating Mach-O exe
This is required when generating an exe on macOS.

Signed-off-by: Jakub Konka <kubkon@jakubkonka.com>
2020-08-24 17:59:44 +02:00
Jakub Konka
2516db9645 Specify path to dyld in Mach-O
This is required since an exec on macOS always has to link against
libSystem.dylib.

Signed-off-by: Jakub Konka <kubkon@jakubkonka.com>
2020-08-24 17:59:44 +02:00
Jakub Konka
69de1a51cd Add entry_point_command struct to Mach-O definitions
The `entry_point_command` is a replacement for `thread_command`, and
is used for main executables to specify the location of `main()`
entry point.

Signed-off-by: Jakub Konka <kubkon@jakubkonka.com>
2020-08-22 04:14:27 -04:00
Andrew Kelley
4a69b11e74 add license header to all std lib files
add SPDX license identifier
copyright ownership is zig contributors
2020-08-20 16:07:04 -04:00
Jakub Konka
e4b3da2720 Write out Mach-O header
This commit write out Mach-O header in the linker's `flush`
method. The header currently only populates the magic number,
filetype, and cpu info.

Signed-off-by: Jakub Konka <kubkon@jakubkonka.com>
2020-08-18 23:35:31 +02:00
LemonBoy
495e894225 delete extra code, more forgiveness 2020-02-22 12:44:21 +01:00
Andrew Kelley
ed36dbbd9c
mv std/ lib/
that's all this commit does. further commits will fix cli flags and
such.

see #2221
2019-09-25 23:35:41 -04:00