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This is in preparation for incremental and actually being able to debug
executables built by the x86_64 backend.
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std.debug.Dwarf is the parsing/decoding logic. std.dwarf remains the
unopinionated types and bits alone.
If you look at this diff you can see a lot less redundancy in
namespaces.
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isValidMemory
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closes #5019
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This code is run when printing a stack trace in a debug executable, so
it has to be fast even without compiler optimizations.
Adding a `@panic` to the top of `main` and running an x86_64 backend
compiled compiler goes from `1m32.773s` to `0m3.232s`.
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define openbsd specific elements in std/dwarf/abi.zig regBytes()
work from Jasper Lievisse Adriaanse, with register values from sys/signal.h
and https://github.com/ARM-software/abi-aa/blob/main/aadwarf64/aadwarf64.rst#dwarf-register-names
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Use inline to vastly simplify the exposed API. This allows a
comptime-known endian parameter to be propogated, making extra functions
for a specific endianness completely unnecessary.
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This reverts commit 6f0198cadbe29294f2bf3153a27beebd64377566.
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This reverts commit 0c99ba1eab63865592bb084feb271cd4e4b0357e, reversing
changes made to 5f92b070bf284f1493b1b5d433dd3adde2f46727.
This caused a CI failure when it landed in master branch due to a
128-bit `@byteSwap` in std.mem.
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- Adds `illumos` to the `Target.Os.Tag` enum. A new function,
`isSolarish` has been added that returns true if the tag is either
Solaris or Illumos. This matches the naming convention found in Rust's
`libc` crate[1].
- Add the tag wherever `.solaris` is being checked against.
- Check for the C pre-processor macro `__illumos__` in CMake to set the
proper target tuple. Illumos distros patch their compilers to have
this in the "built-in" set (verified with `echo | cc -dM -E -`).
Alternatively you could check the output of `uname -o`.
Right now, both Solaris and Illumos import from `c/solaris.zig`. In the
future it may be worth putting the shared ABI bits in a base file, and
mixing that in with specific `c/solaris.zig`/`c/illumos.zig` files.
[1]: https://github.com/rust-lang/libc/tree/6e02a329a2a27f6887ea86952f389ca11e06448c/src/unix/solarish
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Replaces occurences of @fabs absCast and absInt with new @abs builtin.
Also removes the std.math.fabs alias from math.zig.
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There are a couple concepts here worth understanding:
Key.UnionType - This type is available *before* resolving the union's
fields. The enum tag type, number of fields, and field names, field
types, and field alignments are not available with this.
InternPool.UnionType - This one can be obtained from the above type with
`InternPool.loadUnionType` which asserts that the union's enum tag type
has been resolved. This one has all the information available.
Additionally:
* ZIR: Turn an unused bit into `any_aligned_fields` flag to help
semantic analysis know whether a union has explicit alignment on any
fields (usually not).
* Sema: delete `resolveTypeRequiresComptime` which had the same type
signature and near-duplicate logic to `typeRequiresComptime`.
- Make opaque types not report comptime-only (this was inconsistent
between the two implementations of this function).
* Implement accepted proposal #12556 which is a breaking change.
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We do not yet have correct implementation to access xmm registers from
the world of ucontext/mcontext.
Unimplement .netbsd to allow building zig compiler.
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dwarf: documentation fixups
target: enable unwind tables on macho
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dwarf: map the V registers in abi.regBytes
test: add test case that exercises the stack-indirect __unwind_info mode in x86_64
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dwarf: fixup tests that used a ThreadContext
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section
dwarf: fixup missing error
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infer it
dwarf: implement OP.entry_value, add tests
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convesions
debug: dupeContext -> copyContext
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expressions: add more tests, fix tests for mipsel
debug: add lookupModuleName implementation for macos
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UnwindContext
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dwarf: use ThreadContext instead of os.ucontext_t
dwarf: add regBytes impl for windows
dwarf: fixup expression types for non-native
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writing expressions
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dwarf: fixup x86 register mapping logic
dwarf: change the register context update to update in-place instead of copying
debug: always print the unwind error type
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