Andrew Kelley
290d97bd09
wasm linker: emit __heap_base and __heap_end globals and datas
2025-01-15 15:11:36 -08:00
Andrew Kelley
94648a0383
fix merge conflicts with updating line numbers
2025-01-15 15:11:36 -08:00
Andrew Kelley
b41b5fe529
wasm linker: implement __wasm_init_memory
2025-01-15 15:11:36 -08:00
Andrew Kelley
1fd708b1bc
wasm linker: implement data relocs
2025-01-15 15:11:36 -08:00
Andrew Kelley
abdbc38574
wasm linker: implement data symbols
2025-01-15 15:11:36 -08:00
Andrew Kelley
a4bee3009a
wasm linker: implement __wasm_call_ctors
2025-01-15 15:11:36 -08:00
Andrew Kelley
9ccf500508
implement function relocations
...
not all relocation types are implemented yet
2025-01-15 15:11:36 -08:00
Andrew Kelley
5b18af85cb
type checking for synthetic functions
2025-01-15 15:11:36 -08:00
Andrew Kelley
a4895f3c42
wasm object parsing: fix handling of weak functions and globals
2025-01-15 15:11:36 -08:00
Andrew Kelley
4fccb5ae7a
wasm linker: improve error messages by making source locations more lazy
2025-01-15 15:11:36 -08:00
Andrew Kelley
7d224516c4
wasm linker: chase relocations for references
2025-01-15 15:11:36 -08:00
Andrew Kelley
c5822879a1
fix bad archive name calculation
2025-01-15 15:11:36 -08:00
Andrew Kelley
b7a95911ab
wasm linker: fix table imports in objects
...
they need to reference a local index until the object parsing is
complete and also need to check reftype matching
2025-01-15 15:11:36 -08:00
Andrew Kelley
78987081ce
can't use source location until return from this function
2025-01-15 15:11:36 -08:00
Andrew Kelley
a72e7384aa
wasm linker: fix global imports in objects
...
they need to reference a local index until the object parsing is
complete and also need to check mutability and type matching
2025-01-15 15:11:36 -08:00
Andrew Kelley
eb943890d9
resolve merge conflicts
...
with 497592c9b45a94fb7b6028bf45b80f183e395a9b
2025-01-15 15:11:36 -08:00
Andrew Kelley
aebccb06e7
fix missing missing entry symbol error when no zcu
2025-01-15 15:11:36 -08:00
Andrew Kelley
1a4c5837fe
wasm linker: fix crashes when parsing compiler_rt
2025-01-15 15:11:36 -08:00
Andrew Kelley
4b9dc2922f
wasm linker: fix relocation parsing
2025-01-15 15:11:36 -08:00
Andrew Kelley
9cd7cad42e
Compilation: account for C objects and resources in prelink
2025-01-15 15:11:36 -08:00
Andrew Kelley
0d028e4407
wasm linker: fix active data segment offset value
2025-01-15 15:11:36 -08:00
Andrew Kelley
50626565ba
wasm linker: fix missing function type entry for import
2025-01-15 15:11:36 -08:00
Andrew Kelley
f1e167c1d8
use fixed writer in more places
2025-01-15 15:11:36 -08:00
Andrew Kelley
2174d20540
fix stack pointer initialized to wrong vaddr
2025-01-15 15:11:36 -08:00
Andrew Kelley
728103467e
wasm linker: implement indirect function calls
2025-01-15 15:11:36 -08:00
Andrew Kelley
2dbf66dd69
wasm linker: implement stack pointer global
2025-01-15 15:11:36 -08:00
Andrew Kelley
d1cde847a3
implement the prelink phase in the frontend
...
this strategy uses a "postponed" queue to handle codegen tasks that
spawn too early. there's probably a better way.
2025-01-15 15:11:36 -08:00
Andrew Kelley
694b129d89
wasm linker: fix data section in flush
2025-01-15 15:11:36 -08:00
Andrew Kelley
ee999d5a14
implement error table and error names data segments
2025-01-15 15:11:36 -08:00
Andrew Kelley
7bf53d236d
wasm linker: zcu data fixups are already applied
2025-01-15 15:11:36 -08:00
Andrew Kelley
13eef2f8ab
wasm linker: initialize the data segments table in flush
...
it cannot be done earlier since ids are not stable yet
2025-01-15 15:11:36 -08:00
Andrew Kelley
5e0d33f00f
wasm linker: also call lowerZcuData in updateFunc
...
codegen can generate zcu data dependencies that need to be populated
2025-01-15 15:11:36 -08:00
Andrew Kelley
389b29fd8c
wasm linker: avoid recursion in lowerZcuData
...
instead of recursion, callers of the function are responsible for
checking the respective tables that might have new entries in them and
then calling lowerZcuData again.
2025-01-15 15:11:36 -08:00
Andrew Kelley
4f8a6b0888
wasm linker: implement data fixups
...
one hash table lookup per fixup
2025-01-15 15:11:36 -08:00
Andrew Kelley
5fac6f380e
wasm linker: fix eliding empty data segments
2025-01-15 15:11:36 -08:00
Andrew Kelley
568d9936ab
wasm codegen: fix call_indirect
2025-01-15 15:11:36 -08:00
Andrew Kelley
070b973c4a
wasm linker: allow undefined imports when lib name is provided
...
and expose object_host_name as an option for setting the lib name for
object files, since the wasm linking standards don't specify a way to do
it.
2025-01-15 15:11:36 -08:00
Andrew Kelley
23d0882b54
wasm linker: handle extern functions in updateNav
2025-01-15 15:11:36 -08:00
Andrew Kelley
766284fec8
wasm linker: fix data segments memory flow
...
Recognize three distinct phases:
* before prelink ("object phase")
* after prelink, before flush ("zcu phase")
* during flush ("flush phase")
With this setup, we create data structures during the object phase, then
mutate them during the zcu phase, and then further mutate them during
the flush phase. In order to make the flush phase repeatable, the data
structures are copied just before starting the flush phase.
Further Zcu updates occur against the non-copied data structures.
What's not implemented is frontend garbage collection, in which case
some more changes will be needed in this linker logic to achieve a valid
state with data invariants intact.
2025-01-15 15:11:36 -08:00
Andrew Kelley
91efc5c98b
wasm linker: fix calling imported functions
...
and more disciplined type safety for output function indexes
2025-01-15 15:11:35 -08:00
Andrew Kelley
1a58ae2ed6
wasm codegen: fix extra index not relative
2025-01-15 15:11:35 -08:00
Andrew Kelley
3c70392210
wasm linker: add __zig_error_name_table data when needed
2025-01-15 15:11:35 -08:00
Andrew Kelley
85b53730fe
add safety for calling functions that get virtual addrs
2025-01-15 15:11:35 -08:00
Andrew Kelley
2d899e9a9f
wasm codegen: fix wrong union field for locals
2025-01-15 15:11:35 -08:00
Andrew Kelley
0630344894
fix calculation of nav alignment
2025-01-15 15:11:35 -08:00
Andrew Kelley
416fc2df94
complete wasm.Emit implementation
2025-01-15 15:11:35 -08:00
Andrew Kelley
458f658b42
wasm linker: implement missing logic
...
fix some compilation errors for reworked Emit now that it's actually
referenced
introduce DataSegment.Id for sorting data both from object files and
from the Zcu.
introduce optimization: data segment sorting includes a descending sort
on reference count so that references to data can be smaller integers
leading to better LEB encodings. this optimization is skipped for object
files.
implement uav address access function which is based on only 1 hash
table lookup to find out the offset after sorting.
2025-01-15 15:11:35 -08:00
Andrew Kelley
761387dc55
wasm linker: implement type index method
2025-01-15 15:11:35 -08:00
Andrew Kelley
0555fe8d5b
fix replaceVecSectionHeader
2025-01-15 15:11:35 -08:00
Andrew Kelley
d6b42e585b
wasm linker: implement name subsection
...
unlike the previous implementation, we can simply iterate an array.
2025-01-15 15:11:35 -08:00
